PCB/Rev.E2: Add BOM

Develop

.gitignore

@@ -0,0 +1,22 @@
+*.cod
+*.hex
+*.lst
+*.o
+*.diff
+.DS_Store
+*.o65
+*.ips
+*.bin
+*.map
+*.o.d
+*.log
+*.smc
+*.sfc
+*~
+*.old
+*.elf
+*.img
+autoconf.h
+utils/rle
+utils/derle
+*.bit

CHANGELOG

@@ -15,6 +15,7 @@ v0.1.1a (bugfix release)
 v0.1.2
 ======
 
+ * New menu entry: "System Information"
  * Auto region override (eliminate "This game pak is not designed..." messages)
  * Improved mapper detection (fixes Batman vs. Joker and many PD ROMs)
  * Improved data streaming performance
@@ -22,3 +23,59 @@ v0.1.2
  * A and B buttons swapped in menu to match common key mappings
  * Fixes:
    - MSU1: Stop audio playback on end of audio file
+
+
+v0.1.3
+======
+
+ * Updated logo gfx with new version from klaptra
+ * Updated font to distinguish between 1 and I
+ * Menu layout adjusted to move status line up by 4 scanlines
+ * Run previously loaded game by pressing Start in the menu
+ * Auto-scroll file names that do not fit the screen
+ * SD access time measurement on System Information screen (takes a while!)
+ * Cx4 memory map: mirror ROM to 40-7e/c0-ff (fixes MMX3 Zero patch)
+ * Some FPGA configuration error detection (mainly useful for hardware diag)
+ * Fixes:
+   - FPGA-side SD clock pullup (increases reliability with some cards)
+
+
+v0.1.4
+======
+
+ * SPC Player (contributed by necronomfive/blargg)
+ * System Information screen now shows CPU/PPU revision (contributed by necronomfive)
+ * Satellaview: basic data transmission packet support (makes some more games boot, thanks to LuigiBlood for assistance and sample data packets)
+ * Number of supported files increased to 50000 per card / 16380 per directory
+ * Slight speedup of menu text rendering
+ * Reduce load time of menu
+ * Adjust Cx4 timing to be more faithful
+   (Mega Man now defeats the boss in attract mode in Mega Man X2)
+ * adapt ROM mirroring size to file size if header information is invalid
+   (fixes Super Noah's Ark 3D, possibly others)
+ * MSU1 interface changes suggested by byuu:
+   - Data offset 0 and audio track 0 are automatically requested on reset.
+     This causes the busy flags to become 0 shortly after reset/startup.
+   - $2000 bit 3 is now "audio error", becomes valid after "audio busy" -> 0
+     set when an error occurred while preparing playback of the requested audio track
+ * write LED stays on when SRAM content changes constantly
+ * Fixes:
+   - fix empty save files on FAT16 / incorrect free cluster count on FAT32
+   - correct directory sorting (force parent directory at top of list)
+   - fix text corruption when entering a directory with a scrollable name
+   - fix files/dirs count in system information
+   - make 'sd2snes' directory hiding case-insensitive
+   - improve DAC I²S timing
+   - fix occasional palette corruption in menu
+   - fix SD clock glitch on ROM loading (occasional glitches/crashes)
+   - fix memory write timing on ROM loading (occasional glitches/crashes)
+   - fix SPI timing (ROMs not loading; System Information not working)
+   - properly synchronize SNES control signals (occasional glitches/crashes)
+   - fix floating IRQ output (occasional glitches/slowdowns)
+
+
+v0.1.4a (bugfix release)
+========================
+
+ * Fix DMA initialization in the menu (could cause sprite corruption in some games)
+

pcb/kicad/RevE/sd2snes.brd

@@ -1,4 +1,4 @@
-PCBNEW-BOARD Version 1 date Fri 02 Dec 2011 02:55:43 PM CET
+PCBNEW-BOARD Version 1 date Mon 30 Jan 2012 04:25:38 PM CET
 
 # Created by Pcbnew(2011-07-02 BZR 2664)-stable
 
@@ -21,7 +21,7 @@ $EndGENERAL
 $SHEETDESCR
 Sheet A4 11700 8267
 Title "sd2snes Mark II"
-Date "2 dec 2011"
+Date "30 jan 2012"
 Rev "C2"
 Comp "Maximilian Rehkopf"
 Comment1 ""
@@ -71,7 +71,7 @@ PadSize 79 690
 PadDrill 0
 Pad2MaskClearance 40
 AuxiliaryAxisOrg 0 0
-PcbPlotParams (pcbplotparams (layerselection 2097152) (usegerberextensions true) (excludeedgelayer false) (linewidth 79) (plotframeref false) (viasonmask false) (mode 1) (useauxorigin false) (hpglpennumber 1) (hpglpenspeed 20) (hpglpendiameter 15) (hpglpenoverlay 0) (pscolor true) (psnegative false) (psa4output false) (plotreference true) (plotvalue true) (plotothertext true) (plotinvisibletext true) (padsonsilk false) (subtractmaskfromsilk true) (outputformat 2) (mirror false) (drillshape 2) (scaleselection 1) (outputdirectory ""))
+PcbPlotParams (pcbplotparams (layerselection 284196865) (usegerberextensions true) (excludeedgelayer true) (linewidth 79) (plotframeref false) (viasonmask false) (mode 1) (useauxorigin false) (hpglpennumber 1) (hpglpenspeed 20) (hpglpendiameter 15) (hpglpenoverlay 0) (pscolor true) (psnegative false) (psa4output false) (plotreference true) (plotvalue false) (plotothertext false) (plotinvisibletext false) (padsonsilk false) (subtractmaskfromsilk true) (outputformat 1) (mirror false) (drillshape 2) (scaleselection 1) (outputdirectory ""))
 $EndSETUP
 
 $EQUIPOT
@@ -12830,7 +12830,7 @@ Po 45815 24905 700 700 120 0
 De 20 0 0 Normal C
 $EndTEXTPCB
 $TEXTPCB
-Te "©2009 - 2011 M. Rehkopf"
+Te "©2009 - 2012 ikari_01 "
 Po 44000 27540 500 500 75 0
 De 20 0 0 Normal C
 $EndTEXTPCB

pcb/kicad/RevE2/sd2snes.cmp

@@ -1,4 +1,4 @@
-Cmp-Mod V01 Created by CvPCB (2011-07-02 BZR 2664)-stable date = Mon 26 Dec 2011 09:56:51 PM CET
+Cmp-Mod V01 Created by CvPcb (2012-jan-04)-stable date = Sun 26 Feb 2012 01:11:53 AM CET
 
 BeginCmp
 TimeStamp = /4B6EC9C3/4BAF2EAF;
@@ -865,119 +865,119 @@ BeginCmp
 TimeStamp = /4B6E16F2/4D9630F0;
 Reference = RA101;
 ValeurCmp = 100;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D9630F4;
 Reference = RA102;
 ValeurCmp = 100;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D95CDCD;
 Reference = RA103;
 ValeurCmp = FB;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D95CDD4;
 Reference = RA104;
 ValeurCmp = FB;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D96310E;
 Reference = RA105;
 ValeurCmp = 100;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D963115;
 Reference = RA106;
 ValeurCmp = 100;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D963117;
 Reference = RA107;
 ValeurCmp = 100;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D963119;
 Reference = RA108;
 ValeurCmp = 100;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D963103;
 Reference = RA109;
 ValeurCmp = 100;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D963107;
 Reference = RA110;
 ValeurCmp = 100;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D96310A;
 Reference = RA111;
 ValeurCmp = 100;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D96310C;
 Reference = RA112;
 ValeurCmp = 100;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D97B45C;
 Reference = RA113;
 ValeurCmp = 100;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4D97B45F;
 Reference = RA114;
 ValeurCmp = 100;
-IdModule  = R_PACK_0804;
+IdModule  = R_PACK_0804_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4B6E1740;
 Reference = U101;
 ValeurCmp = 74ALVC164245DGG;
-IdModule  = TSSOP48;
+IdModule  = TSSOP48_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4B6E1744;
 Reference = U102;
 ValeurCmp = 74ALVC164245DGG;
-IdModule  = TSSOP48;
+IdModule  = TSSOP48_LONGPADS;
 EndCmp
 
 BeginCmp
 TimeStamp = /4B6E16F2/4B6E1748;
 Reference = U103;
 ValeurCmp = 74ALVC164245DGG;
-IdModule  = TSSOP48;
+IdModule  = TSSOP48_LONGPADS;
 EndCmp
 
 BeginCmp
@@ -1026,7 +1026,7 @@ BeginCmp
 TimeStamp = /4B6EC9C3/4BAA9331;
 Reference = U341;
 ValeurCmp = CS4344;
-IdModule  = TSSOP10;
+IdModule  = TSSOP10_LONGPADS;
 EndCmp
 
 BeginCmp

pcb/kicad/RevE2/sd2snes.pro

@@ -1,4 +1,4 @@
-update=Wed 28 Dec 2011 06:55:00 PM CET
+update=Sat 25 Feb 2012 11:51:50 PM CET
 version=1
 last_client=pcbnew
 [general]
@@ -83,9 +83,9 @@ LibName40=libs/usb_minib
 LibName41=libs/mic23250
 [pcbnew]
 version=1
-PadDrlX=512
-PadDimH=512
-PadDimV=512
+PadDrlX=0
+PadDimH=197
+PadDimV=276
 BoardThickness=630
 TxtPcbV=800
 TxtPcbH=600
@@ -114,3 +114,4 @@ LibName11=libs/mypackages
 LibName12=libs/snescart
 LibName13=libs/sdcard
 LibName14=libs/snail
+LibName15=libs/snail2

pcb/kicad/libs/mypackages.mod

@@ -1,10 +1,11 @@
-PCBNEW-LibModule-V1  Tue 27 Dec 2011 12:29:40 AM CET
+PCBNEW-LibModule-V1  Sun 26 Feb 2012 12:35:43 AM CET
 # encoding utf-8
 $INDEX
 BT_KEYSTONE_1059_20MM
 CP_TANTAL_SMD_D
 DIP-36
 HC49US
+HRS-DM1AA
 LED-3MM-FIXED
 LQFP80-.5
 L_4.2X4.2
@@ -30,6 +31,7 @@ TSSOP10_LONGPADS
 TSSOP48
 TSSOP48_LONGPADS
 USB-MINIB-THT
+USB_MINIB_SMT
 VFBGA36
 VFBGA48
 VFBGA54
@@ -5707,75 +5709,6 @@ Ne 0 ""
 Po -510 -384
 $EndPAD
 $EndMODULE  R_PACK_1206
-$MODULE R_PACK_0804_LONGPADS
-Po 0 0 0 15 4EF2E2A7 00000000 ~~
-Li R_PACK_0804_LONGPADS
-Sc 00000000
-AR
-Op 0 0 0
-T0 0 0 320 320 0 70 N V 21 N "R_PACK_0804"
-T1 0 0 320 320 0 70 N V 21 N "VAL**"
-DS 551 591 551 -591 79 21
-DS -551 -591 -551 591 79 21
-DS -551 -591 551 -591 79 21
-DS 551 591 -551 591 79 21
-$PAD
-Sh "7" R 118 354 0 0 0
-Dr 0 0 0
-At SMD N 00888000
-Ne 0 ""
-Po -98 -276
-$EndPAD
-$PAD
-Sh "6" R 118 354 0 0 0
-Dr 0 0 0
-At SMD N 00888000
-Ne 0 ""
-Po 98 -276
-$EndPAD
-$PAD
-Sh "2" R 118 354 0 0 0
-Dr 0 0 0
-At SMD N 00888000
-Ne 0 ""
-Po -98 276
-$EndPAD
-$PAD
-Sh "3" R 118 354 0 0 0
-Dr 0 0 0
-At SMD N 00888000
-Ne 0 ""
-Po 98 276
-$EndPAD
-$PAD
-Sh "8" R 197 354 0 0 0
-Dr 0 0 0
-At SMD N 00888000
-Ne 0 ""
-Po -335 -276
-$EndPAD
-$PAD
-Sh "5" R 197 354 0 0 0
-Dr 0 0 0
-At SMD N 00888000
-Ne 0 ""
-Po 335 -276
-$EndPAD
-$PAD
-Sh "4" R 197 354 0 0 0
-Dr 0 0 0
-At SMD N 00888000
-Ne 0 ""
-Po 335 276
-$EndPAD
-$PAD
-Sh "1" R 197 354 0 0 0
-Dr 0 0 0
-At SMD N 00888000
-Ne 0 ""
-Po -335 276
-$EndPAD
-$EndMODULE  R_PACK_0804_LONGPADS
 $MODULE TSSOP10_LONGPADS
 Po 0 0 0 15 4EF2E58B 00000000 ~~
 Li TSSOP10_LONGPADS
@@ -5860,19 +5793,390 @@ Ne 0 ""
 Po -393 -965
 $EndPAD
 $EndMODULE  TSSOP10_LONGPADS
-$MODULE TSSOP48_LONGPADS
-Po 0 0 0 15 4B6E17E6 00000000 ~~
-Li TSSOP48_LONGPADS
+$MODULE L_4.2X4.2
+Po 0 0 0 15 4EF777D2 00000000 ~~
+Li L_4.2X4.2
 Sc 00000000
 AR
 Op 0 0 0
-T0 0 -551 600 600 0 120 N V 21 N "Test"
-T1 0 630 600 600 0 120 N V 21 N "VAL**"
-DC -2205 945 -2087 945 40 21
-DS -2460 -1200 2460 -1200 47 21
-DS 2460 -1200 2460 1200 47 21
-DS -2460 1200 2460 1200 47 21
-DS -2460 -1200 -2460 1200 47 21
+T0 0 0 600 600 0 120 N V 21 N "L_4.2X4.2"
+T1 0 0 600 600 0 120 N V 21 N "VAL**"
+DS -1024 -984 1024 -984 79 21
+DS 1024 -984 1024 984 79 21
+DS 1024 984 -1024 984 79 21
+DS -1024 984 -1024 -984 79 21
+$PAD
+Sh "1" R 591 1654 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 0 ""
+Po -571 0
+$EndPAD
+$PAD
+Sh "2" R 591 1654 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 0 ""
+Po 571 0
+$EndPAD
+$EndMODULE  L_4.2X4.2
+$MODULE LED-3MM-FIXED
+Po 0 0 0 15 4EF9035D 00000000 ~~
+Li LED-3MM-FIXED
+Cd LED 3mm - Lead pitch 100mil (2,54mm)
+Kw LED led 3mm 3MM 100mil 2,54mm
+Sc 00000000
+AR /4B6ED75B/4C0DA78D
+Op 0 0 0
+At VIRTUAL
+T0 -300 -2125 320 320 0 70 N V 21 N "D403"
+T1 25 3575 320 320 2700 70 N V 21 N "LED_2mA_1.7V,_red"
+DS 669 669 669 394 80 21
+DS 669 -669 669 -394 80 21
+DA 0 0 669 669 2700 80 21
+$PAD
+Sh "1" C 660 660 0 0 0
+Dr 400 0 0
+At STD N 00E0FFFF
+Ne 1 "+3.3V"
+Po -500 0
+$EndPAD
+$PAD
+Sh "2" C 660 660 0 0 0
+Dr 400 0 0
+At STD N 00E0FFFF
+Ne 2 "N-000262"
+Po 500 0
+$EndPAD
+$SHAPE3D
+Na "libs/led3_vertical_red.wrl"
+Sc 1.000000 1.000000 1.000000
+Of 0.000000 0.000000 0.000000
+Ro 0.000000 0.000000 0.000000
+$EndSHAPE3D
+$EndMODULE  LED-3MM-FIXED
+$MODULE USB_MINIB_SMT
+Po 0 0 0 15 4F34EE0A 00000000 ~~
+Li USB_MINIB_SMT
+Sc 00000000
+AR /4B6ED75B/4BF00175
+Op 0 0 0
+T0 -2553 -147 320 320 0 70 N V 21 N "J421"
+T1 0 0 320 320 0 80 N I 21 N "USB_Mini-B_SMT"
+DS -1516 2047 1516 2047 79 21
+DS 1516 2047 1516 -1575 79 21
+DS 1516 -1575 -1516 -1575 79 21
+DS -1516 -1575 -1516 2047 79 21
+$PAD
+Sh "6" R 787 1299 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 1 "GND"
+Po -1752 -1161
+$EndPAD
+$PAD
+Sh "7" R 787 1299 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 1 "GND"
+Po 1752 -1161
+$EndPAD
+$PAD
+Sh "6" R 787 984 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 1 "GND"
+Po -1752 1161
+$EndPAD
+$PAD
+Sh "7" R 787 984 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 1 "GND"
+Po 1752 1161
+$EndPAD
+$PAD
+Sh "" C 354 354 0 0 0
+Dr 354 0 0
+At HOLE N 00E0FFFF
+Ne 0 ""
+Po -866 0
+$EndPAD
+$PAD
+Sh "" C 354 354 0 0 0
+Dr 354 0 0
+At HOLE N 00E0FFFF
+Ne 0 ""
+Po 866 0
+$EndPAD
+$PAD
+Sh "3" R 197 1496 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 3 "N-000315"
+Po 0 -1418
+$EndPAD
+$PAD
+Sh "4" R 197 1496 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 0 ""
+Po 315 -1418
+$EndPAD
+$PAD
+Sh "5" R 197 1496 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 1 "GND"
+Po 630 -1418
+$EndPAD
+$PAD
+Sh "1" R 197 1496 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 4 "N-000328"
+Po -630 -1418
+$EndPAD
+$PAD
+Sh "2" R 197 1496 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 2 "N-000310"
+Po -315 -1418
+$EndPAD
+$EndMODULE  USB_MINIB_SMT
+$MODULE HRS-DM1AA
+Po 0 0 0 15 4F34F118 00000000 ~~
+Li HRS-DM1AA
+Sc 00000000
+AR /4B6ED75B/4BAA6A9C
+Op 0 0 0
+T0 -5000 -6425 320 320 0 70 N V 21 N "J411"
+T1 0 0 320 320 0 70 N V 21 N "Hirose_DM1AA"
+DS 4134 -5984 5512 -5984 120 21
+DS 5512 6024 -5512 6024 120 21
+DS -5512 -5984 -4685 -5984 120 21
+DS -5512 4685 -5512 6024 120 21
+DS 5511 6025 5511 4686 120 21
+DS 5511 -2637 5511 3584 120 21
+DS 5511 -5983 5511 -3779 120 21
+DS 4133 -5511 3779 -5511 120 21
+DS -4686 -5511 -4529 -5511 120 21
+DS -5512 2521 -5512 2796 120 21
+DS -5512 -983 -5512 1773 120 21
+DS -5512 -2637 -5512 -1731 120 21
+DS -5512 -5983 -5512 -3779 120 21
+DS -4686 -5983 -4686 -5511 120 21
+DS 4133 -5511 4133 -5983 120 21
+$PAD
+Sh "" C 512 512 0 0 0
+Dr 512 0 0
+At HOLE N 00E0FFFF
+Ne 0 ""
+Po -4686 -4999
+$EndPAD
+$PAD
+Sh "" C 512 512 0 0 0
+Dr 512 0 0
+At HOLE N 00E0FFFF
+Ne 0 ""
+Po 4133 -4999
+$EndPAD
+$PAD
+Sh "1" R 433 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 10 "SD_DAT3"
+Po 2391 -5865
+$EndPAD
+$PAD
+Sh "2" R 433 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 6 "SD_CMD"
+Po 1407 -5865
+$EndPAD
+$PAD
+Sh "3" R 433 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 2 "GND"
+Po 422 -5865
+$EndPAD
+$PAD
+Sh "4" R 433 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 1 "+3.3V"
+Po -562 -5865
+$EndPAD
+$PAD
+Sh "5" R 433 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 5 "SD_CLK"
+Po -1546 -5865
+$EndPAD
+$PAD
+Sh "6" R 433 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 2 "GND"
+Po -2530 -5865
+$EndPAD
+$PAD
+Sh "7" R 433 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 7 "SD_DAT0"
+Po -3485 -5865
+$EndPAD
+$PAD
+Sh "8" R 433 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 8 "SD_DAT1"
+Po -4155 -5865
+$EndPAD
+$PAD
+Sh "9" R 433 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 9 "SD_DAT2"
+Po 3375 -5865
+$EndPAD
+$PAD
+Sh "GND1" R 787 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 2 "GND"
+Po 5708 -3208
+$EndPAD
+$PAD
+Sh "GND1" R 787 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 2 "GND"
+Po 5708 4135
+$EndPAD
+$PAD
+Sh "GND1" R 787 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 2 "GND"
+Po -5710 -3208
+$EndPAD
+$PAD
+Sh "GND1" R 787 787 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 2 "GND"
+Po -5710 4135
+$EndPAD
+$PAD
+Sh "DT" R 787 394 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 4 "N-000318"
+Po -5552 -1377
+$EndPAD
+$PAD
+Sh "WP" R 787 394 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 3 "N-000295"
+Po -5552 2147
+$EndPAD
+$PAD
+Sh "GND2" R 787 394 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 2 "GND"
+Po -5552 3170
+$EndPAD
+$EndMODULE  HRS-DM1AA
+$MODULE R_PACK_0804_LONGPADS
+Po 0 0 0 15 4F496244 00000000 ~~
+Li R_PACK_0804_LONGPADS
+Sc 00000000
+AR /4B6E16F2/4D96310E
+Op 0 0 0
+T0 325 750 320 320 0 70 N V 21 N "RA105"
+T1 0 0 320 320 0 70 N V 21 N "100"
+DS -551 -472 -551 472 79 21
+DS 551 -472 551 472 79 21
+DS -551 -472 551 -472 79 21
+DS 551 472 -551 472 79 21
+$PAD
+Sh "7" R 118 276 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 5 "N-000012"
+Po -98 -236
+$EndPAD
+$PAD
+Sh "6" R 118 276 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 7 "N-000143"
+Po 98 -236
+$EndPAD
+$PAD
+Sh "2" R 118 276 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 2 "/SNES_Slot/SNES_EXT_/RD"
+Po -98 236
+$EndPAD
+$PAD
+Sh "3" R 118 276 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 3 "/SNES_Slot/SNES_EXT_/ROMSEL"
+Po 98 236
+$EndPAD
+$PAD
+Sh "8" R 197 276 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 8 "N-000147"
+Po -335 -236
+$EndPAD
+$PAD
+Sh "5" R 197 276 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 6 "N-000038"
+Po 335 -236
+$EndPAD
+$PAD
+Sh "4" R 197 276 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 4 "/SNES_Slot/SNES_EXT_A23"
+Po 335 236
+$EndPAD
+$PAD
+Sh "1" R 197 276 0 0 0
+Dr 0 0 0
+At SMD N 00888000
+Ne 1 "/SNES_Slot/SNES_EXT_/IRQ"
+Po -335 236
+$EndPAD
+$EndMODULE  R_PACK_0804_LONGPADS
+$MODULE TSSOP48_LONGPADS
+Po 0 0 0 15 4F497040 00000000 ~~
+Li TSSOP48_LONGPADS
+Sc 00000000
+AR 
+Op 0 0 0
+T0 0 -551 320 320 0 70 N V 21 N "Test"
+T1 0 630 320 320 0 70 N V 21 N "VAL**"
+DS -2461 1161 -2461 -1161 79 21
+DS 2461 -1161 2461 1161 79 21
+DC -2205 906 -2087 906 79 21
+DS -2460 -1160 2460 -1160 79 21
+DS -2460 1160 2460 1160 79 21
 $PAD
 Sh "1" R 118 630 0 0 1800
 Dr 0 0 0
@@ -6210,66 +6514,4 @@ Ne 0 ""
 Po -2263 -1614
 $EndPAD
 $EndMODULE  TSSOP48_LONGPADS
-$MODULE L_4.2X4.2
-Po 0 0 0 15 4EF777D2 00000000 ~~
-Li L_4.2X4.2
-Sc 00000000
-AR
-Op 0 0 0
-T0 0 0 600 600 0 120 N V 21 N "L_4.2X4.2"
-T1 0 0 600 600 0 120 N V 21 N "VAL**"
-DS -1024 -984 1024 -984 79 21
-DS 1024 -984 1024 984 79 21
-DS 1024 984 -1024 984 79 21
-DS -1024 984 -1024 -984 79 21
-$PAD
-Sh "1" R 591 1654 0 0 0
-Dr 0 0 0
-At SMD N 00888000
-Ne 0 ""
-Po -571 0
-$EndPAD
-$PAD
-Sh "2" R 591 1654 0 0 0
-Dr 0 0 0
-At SMD N 00888000
-Ne 0 ""
-Po 571 0
-$EndPAD
-$EndMODULE  L_4.2X4.2
-$MODULE LED-3MM-FIXED
-Po 0 0 0 15 4EF9035D 00000000 ~~
-Li LED-3MM-FIXED
-Cd LED 3mm - Lead pitch 100mil (2,54mm)
-Kw LED led 3mm 3MM 100mil 2,54mm
-Sc 00000000
-AR /4B6ED75B/4C0DA78D
-Op 0 0 0
-At VIRTUAL 
-T0 -300 -2125 320 320 0 70 N V 21 N "D403"
-T1 25 3575 320 320 2700 70 N V 21 N "LED_2mA_1.7V,_red"
-DS 669 669 669 394 80 21
-DS 669 -669 669 -394 80 21
-DA 0 0 669 669 2700 80 21
-$PAD
-Sh "1" C 660 660 0 0 0
-Dr 400 0 0
-At STD N 00E0FFFF
-Ne 1 "+3.3V"
-Po -500 0
-$EndPAD
-$PAD
-Sh "2" C 660 660 0 0 0
-Dr 400 0 0
-At STD N 00E0FFFF
-Ne 2 "N-000262"
-Po 500 0
-$EndPAD
-$SHAPE3D
-Na "libs/led3_vertical_red.wrl"
-Sc 1.000000 1.000000 1.000000
-Of 0.000000 0.000000 0.000000
-Ro 0.000000 0.000000 0.000000
-$EndSHAPE3D
-$EndMODULE  LED-3MM-FIXED
 $EndLIBRARY

pcb/kicad/libs/sdcard.bak

@@ -1,4 +1,4 @@
-PCBNEW-LibModule-V1  Tue 27 Dec 2011 01:25:51 AM CET
+PCBNEW-LibModule-V1  Tue 27 Dec 2011 12:52:27 PM CET
 # encoding utf-8
 $INDEX
 HRS-DM1AA
@@ -148,14 +148,14 @@ DS -5512 -5983 -5512 -3779 120 21
 DS -4686 -5983 -4686 -5511 120 21
 DS 4133 -5511 4133 -5983 120 21
 $PAD
-Sh "~" C 510 510 0 0 0
+Sh "~" C 512 512 0 0 0
 Dr 512 0 0
 At STD N 0000FFFF
 Ne 0 ""
 Po -4686 -4999
 $EndPAD
 $PAD
-Sh "~" C 510 510 0 0 0
+Sh "~" C 512 512 0 0 0
 Dr 512 0 0
 At STD N 0000FFFF
 Ne 0 ""

pcb/kicad/libs/sdcard.mod

@@ -1,4 +1,4 @@
-PCBNEW-LibModule-V1  Tue 27 Dec 2011 12:52:27 PM CET
+PCBNEW-LibModule-V1  Sun 26 Feb 2012 12:17:38 AM CET
 # encoding utf-8
 $INDEX
 HRS-DM1AA
@@ -125,7 +125,7 @@ Po 3740 709
 $EndPAD
 $EndMODULE  SD-RSMT-2-MQ-WF
 $MODULE HRS-DM1AA
-Po 0 0 0 15 4EF9108C 00000000 ~~
+Po 0 0 0 15 4F496C0E 00000000 ~~
 Li HRS-DM1AA
 Sc 00000000
 AR HRS-DM1AA
@@ -148,16 +148,16 @@ DS -5512 -5983 -5512 -3779 120 21
 DS -4686 -5983 -4686 -5511 120 21
 DS 4133 -5511 4133 -5983 120 21
 $PAD
-Sh "~" C 512 512 0 0 0
+Sh "" C 512 512 0 0 0
 Dr 512 0 0
-At STD N 0000FFFF
+At HOLE N 00E0FFFF
 Ne 0 ""
 Po -4686 -4999
 $EndPAD
 $PAD
-Sh "~" C 512 512 0 0 0
+Sh "" C 512 512 0 0 0
 Dr 512 0 0
-At STD N 0000FFFF
+At HOLE N 00E0FFFF
 Ne 0 ""
 Po 4133 -4999
 $EndPAD

pcb/kicad/libs/snescart.bak

@@ -1,4 +1,4 @@
-PCBNEW-LibModule-V1  Mon 04 Jul 2011 12:35:33 AM CEST
+PCBNEW-LibModule-V1  Thu 09 Feb 2012 09:51:59 PM CET
 # encoding utf-8
 $INDEX
 SNESCART_EXT
@@ -537,7 +537,7 @@ Po 14331 -3780
 $EndPAD
 $EndMODULE  SNESCART_EXT
 $MODULE SNESCART_EXT2
-Po 0 0 0 15 4E0F6C87 00000000 ~~
+Po 0 0 0 15 4F3431E9 00000000 ~~
 Li SNESCART_EXT2
 Sc 00000000
 AR /4B6E16F2/4B6E1766
@@ -546,6 +546,18 @@ Op 0 0 0
 .SolderPaste -4
 T0 -4134 2953 600 600 0 120 N V 21 N "J101"
 T1 0 2953 600 600 0 120 N V 21 N "SNESCART_EXT"
+DS -20039 -5000 -20039 -8898 39 28
+DS -18465 -4016 -18465 -5000 39 28
+DS -19449 -2402 -19449 -4016 39 28
+DS -17717 -2402 -17717 1693 39 28
+DS 17717 -2402 17717 1693 39 28
+DS 19921 -4094 19921 -2402 39 28
+DS 19291 -29252 19291 -27756 39 28
+DS -19488 -29252 -19488 -27756 39 28
+DS -8524 -30709 -8524 -29252 39 28
+DS 8622 -29252 8622 -30709 39 28
+DS -20039 -24409 -20039 -12244 39 28
+DS -19488 -27087 -19488 -24409 39 28
 DC 1142 -11378 1929 -11378 79 20
 DC 1142 -11378 1929 -11339 79 21
 DS 19921 -24409 19921 -8976 39 28
@@ -556,46 +568,33 @@ DS 19291 -8189 19291 -6890 39 28
 DS 18307 -8189 19291 -8189 39 28
 DS 18307 -8976 18307 -8189 39 28
 DS 19921 -8976 18307 -8976 39 28
-DS -20039 -4803 -20039 -8898 39 28
-DS -20039 -24528 -20039 -12244 39 28
 DS -18465 -12244 -20039 -12244 39 28
 DS -18465 -11457 -18465 -12244 39 28
 DS -19449 -11457 -18465 -11457 39 28
 DS -19449 -8898 -19449 -11457 39 28
 DS -20039 -8898 -19449 -8898 39 28
-DS -19488 -27087 -19488 -24528 39 28
 DA -17441 1693 -17441 1969 900 39 28
 DA -13071 1693 -12795 1693 900 39 28
 DA -11535 1693 -11535 1969 900 39 28
 DA 11535 1693 11811 1693 900 39 28
 DA 13071 1693 13071 1969 900 39 28
 DA 17441 1693 17717 1693 900 39 28
-DS 8622 -29331 19291 -29331 40 28
+DS 8622 -29252 19291 -29252 40 28
 DS -8524 -30709 8622 -30709 40 28
-DS -19488 -29331 -8524 -29331 40 28
+DS -19488 -29252 -8524 -29252 40 28
 DC 2796 -17047 3583 -17047 75 20
 DC 2795 -17047 3582 -17047 75 21
-DS 8622 -29331 8622 -30709 40 28
-DS -8524 -30709 -8524 -29331 40 28
-DS -19488 -29331 -19488 -27756 40 28
 DS -19488 -27756 -18504 -27756 40 28
 DS -18504 -27756 -18504 -27087 40 28
 DS -18504 -27087 -19488 -27087 40 28
-DS -19488 -24528 -20039 -24528 40 28
-DS -20039 -4803 -18465 -4803 40 28
-DS -18465 -4803 -18465 -4016 40 28
+DS -19488 -24409 -20039 -24409 40 28
+DS -20039 -5000 -18465 -5000 40 28
 DS -18465 -4016 -19449 -4016 40 28
-DS -19449 -4016 -19449 -2205 40 28
-DS -19449 -2205 -17717 -2205 40 28
-DS -17717 -2205 -17717 -2165 40 28
+DS -19449 -2402 -17717 -2402 40 28
 DS 19291 -27087 18307 -27087 40 28
 DS 18307 -27087 18307 -27756 40 28
 DS 18307 -27756 19291 -27756 40 28
-DS 19291 -27756 19291 -29331 40 28
-DS 17717 1693 17717 -2165 40 28
-DS 17717 -2165 17717 -2205 40 28
-DS 17717 -2205 19921 -2205 40 28
-DS 19921 -2205 19921 -4094 40 28
+DS 17717 -2402 19921 -2402 40 28
 DS 19921 -4094 19291 -4094 40 28
 DS 19291 -4094 19291 -6102 40 28
 DS 19291 -6102 18307 -6102 40 28
@@ -604,7 +603,6 @@ DS 13071 1969 17441 1969 40 28
 DS 11811 1693 11811 -2480 40 28
 DS 11811 -2480 12795 -2480 40 28
 DS 12795 -2480 12795 1693 40 28
-DS -17717 1693 -17717 -2165 40 28
 DS -13071 1969 -17441 1969 40 28
 DS -11811 1693 -11811 -2480 40 28
 DS -11811 -2480 -12795 -2480 40 28
@@ -864,6 +862,7 @@ Dr 0 0 0
 At CONN N 00000001
 Ne 0 ""
 Po -16732 197
+Le -65794
 $EndPAD
 $PAD
 Sh "33" R 591 2756 0 0 0
@@ -871,6 +870,7 @@ Dr 0 0 0
 At CONN N 00000001
 Ne 49 "/SNES_Slot/SNES_EXT_REFRESH"
 Po -15748 197
+Le -197380
 $EndPAD
 $PAD
 Sh "34" R 591 2756 0 0 0

pcb/kicad/libs/snescart.mod

@@ -1,8 +1,9 @@
-PCBNEW-LibModule-V1  Mon 04 Jul 2011 12:37:18 AM CEST
+PCBNEW-LibModule-V1  Fri 10 Feb 2012 10:51:00 AM CET
 # encoding utf-8
 $INDEX
 SNESCART_EXT
 SNESCART_EXT2
+SNESCART_EXT2_SMTUSB
 $EndINDEX
 $MODULE SNESCART_EXT
 Po 0 0 0 15 4D200467 00000000 ~~
@@ -537,7 +538,7 @@ Po 14331 -3780
 $EndPAD
 $EndMODULE  SNESCART_EXT
 $MODULE SNESCART_EXT2
-Po 0 0 0 15 4E10EF0E 00000000 ~~
+Po 0 0 0 15 4F3431E9 00000000 ~~
 Li SNESCART_EXT2
 Sc 00000000
 AR /4B6E16F2/4B6E1766
@@ -546,6 +547,16 @@ Op 0 0 0
 .SolderPaste -4
 T0 -4134 2953 600 600 0 120 N V 21 N "J101"
 T1 0 2953 600 600 0 120 N V 21 N "SNESCART_EXT"
+DS -20039 -5000 -20039 -8898 39 28
+DS -18465 -4016 -18465 -5000 39 28
+DS -19449 -2402 -19449 -4016 39 28
+DS -17717 -2402 -17717 1693 39 28
+DS 17717 -2402 17717 1693 39 28
+DS 19921 -4094 19921 -2402 39 28
+DS 19291 -29252 19291 -27756 39 28
+DS -19488 -29252 -19488 -27756 39 28
+DS -8524 -30709 -8524 -29252 39 28
+DS 8622 -29252 8622 -30709 39 28
 DS -20039 -24409 -20039 -12244 39 28
 DS -19488 -27087 -19488 -24409 39 28
 DC 1142 -11378 1929 -11378 79 20
@@ -558,7 +569,6 @@ DS 19291 -8189 19291 -6890 39 28
 DS 18307 -8189 19291 -8189 39 28
 DS 18307 -8976 18307 -8189 39 28
 DS 19921 -8976 18307 -8976 39 28
-DS -20039 -4803 -20039 -8898 39 28
 DS -18465 -12244 -20039 -12244 39 28
 DS -18465 -11457 -18465 -12244 39 28
 DS -19449 -11457 -18465 -11457 39 28
@@ -570,32 +580,22 @@ DA -11535 1693 -11535 1969 900 39 28
 DA 11535 1693 11811 1693 900 39 28
 DA 13071 1693 13071 1969 900 39 28
 DA 17441 1693 17717 1693 900 39 28
-DS 8622 -29331 19291 -29331 40 28
+DS 8622 -29252 19291 -29252 40 28
 DS -8524 -30709 8622 -30709 40 28
-DS -19488 -29331 -8524 -29331 40 28
+DS -19488 -29252 -8524 -29252 40 28
 DC 2796 -17047 3583 -17047 75 20
 DC 2795 -17047 3582 -17047 75 21
-DS 8622 -29331 8622 -30709 40 28
-DS -8524 -30709 -8524 -29331 40 28
-DS -19488 -29331 -19488 -27756 40 28
 DS -19488 -27756 -18504 -27756 40 28
 DS -18504 -27756 -18504 -27087 40 28
 DS -18504 -27087 -19488 -27087 40 28
 DS -19488 -24409 -20039 -24409 40 28
-DS -20039 -4803 -18465 -4803 40 28
-DS -18465 -4803 -18465 -4016 40 28
+DS -20039 -5000 -18465 -5000 40 28
 DS -18465 -4016 -19449 -4016 40 28
-DS -19449 -4016 -19449 -2205 40 28
-DS -19449 -2205 -17717 -2205 40 28
-DS -17717 -2205 -17717 -2165 40 28
+DS -19449 -2402 -17717 -2402 40 28
 DS 19291 -27087 18307 -27087 40 28
 DS 18307 -27087 18307 -27756 40 28
 DS 18307 -27756 19291 -27756 40 28
-DS 19291 -27756 19291 -29331 40 28
-DS 17717 1693 17717 -2165 40 28
-DS 17717 -2165 17717 -2205 40 28
-DS 17717 -2205 19921 -2205 40 28
-DS 19921 -2205 19921 -4094 40 28
+DS 17717 -2402 19921 -2402 40 28
 DS 19921 -4094 19291 -4094 40 28
 DS 19291 -4094 19291 -6102 40 28
 DS 19291 -6102 18307 -6102 40 28
@@ -604,7 +604,6 @@ DS 13071 1969 17441 1969 40 28
 DS 11811 1693 11811 -2480 40 28
 DS 11811 -2480 12795 -2480 40 28
 DS 12795 -2480 12795 1693 40 28
-DS -17717 1693 -17717 -2165 40 28
 DS -13071 1969 -17441 1969 40 28
 DS -11811 1693 -11811 -2480 40 28
 DS -11811 -2480 -12795 -2480 40 28
@@ -1147,4 +1146,614 @@ Po 14331 -3780
 Le 23484672
 $EndPAD
 $EndMODULE  SNESCART_EXT2
+$MODULE SNESCART_EXT2_SMTUSB
+Po 0 0 0 15 4F34E870 00000000 ~~
+Li SNESCART_EXT2_SMTUSB
+Sc 00000000
+AR /4B6E16F2/4B6E1766
+Op 0 0 0
+.SolderMask 4
+.SolderPaste -4
+T0 -4134 2953 600 600 0 120 N V 21 N "J101"
+T1 0 2953 600 600 0 120 N V 21 N "SNESCART_EXT"
+DS 8858 -29252 19291 -29252 39 28
+DS 8622 -30709 8858 -30709 39 28
+DS -20039 -5000 -20039 -8898 39 28
+DS -18465 -4016 -18465 -5000 39 28
+DS -19449 -2402 -19449 -4016 39 28
+DS -17717 -2402 -17717 1693 39 28
+DS 17717 -2402 17717 1693 39 28
+DS 19921 -4094 19921 -2402 39 28
+DS 19291 -29252 19291 -27756 39 28
+DS -19488 -29252 -19488 -27756 39 28
+DS -8524 -30709 -8524 -29252 39 28
+DS 8858 -29252 8858 -30709 39 28
+DS -20039 -24409 -20039 -12244 39 28
+DS -19488 -27087 -19488 -24409 39 28
+DC 1142 -11378 1929 -11378 79 20
+DC 1142 -11378 1929 -11339 79 21
+DS 19921 -24409 19921 -8976 39 28
+DS 19291 -27087 19291 -24409 39 28
+DS 19291 -24409 19921 -24409 39 28
+DS 18307 -6890 19291 -6890 39 28
+DS 19291 -8189 19291 -6890 39 28
+DS 18307 -8189 19291 -8189 39 28
+DS 18307 -8976 18307 -8189 39 28
+DS 19921 -8976 18307 -8976 39 28
+DS -18465 -12244 -20039 -12244 39 28
+DS -18465 -11457 -18465 -12244 39 28
+DS -19449 -11457 -18465 -11457 39 28
+DS -19449 -8898 -19449 -11457 39 28
+DS -20039 -8898 -19449 -8898 39 28
+DA -17441 1693 -17441 1969 900 39 28
+DA -13071 1693 -12795 1693 900 39 28
+DA -11535 1693 -11535 1969 900 39 28
+DA 11535 1693 11811 1693 900 39 28
+DA 13071 1693 13071 1969 900 39 28
+DA 17441 1693 17717 1693 900 39 28
+DS -8524 -30709 8622 -30709 40 28
+DS -19488 -29252 -8524 -29252 40 28
+DC 2796 -17047 3583 -17047 75 20
+DC 2795 -17047 3582 -17047 75 21
+DS -19488 -27756 -18504 -27756 40 28
+DS -18504 -27756 -18504 -27087 40 28
+DS -18504 -27087 -19488 -27087 40 28
+DS -19488 -24409 -20039 -24409 40 28
+DS -20039 -5000 -18465 -5000 40 28
+DS -18465 -4016 -19449 -4016 40 28
+DS -19449 -2402 -17717 -2402 40 28
+DS 19291 -27087 18307 -27087 40 28
+DS 18307 -27087 18307 -27756 40 28
+DS 18307 -27756 19291 -27756 40 28
+DS 17717 -2402 19921 -2402 40 28
+DS 19921 -4094 19291 -4094 40 28
+DS 19291 -4094 19291 -6102 40 28
+DS 19291 -6102 18307 -6102 40 28
+DS 18307 -6102 18307 -6890 40 28
+DS 13071 1969 17441 1969 40 28
+DS 11811 1693 11811 -2480 40 28
+DS 11811 -2480 12795 -2480 40 28
+DS 12795 -2480 12795 1693 40 28
+DS -13071 1969 -17441 1969 40 28
+DS -11811 1693 -11811 -2480 40 28
+DS -11811 -2480 -12795 -2480 40 28
+DS -12795 -2480 -12795 1693 40 28
+DS -11535 1969 11535 1969 40 28
+$PAD
+Sh "1" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 50 "/SNES_Slot/SNES_EXT_SYS_CLK"
+Po -16732 197
+Le 19
+$EndPAD
+$PAD
+Sh "2" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 0 ""
+Po -15748 197
+Le 86
+$EndPAD
+$PAD
+Sh "3" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 47 "/SNES_Slot/SNES_EXT_PA6"
+Po -14764 197
+Le 98
+$EndPAD
+$PAD
+Sh "4" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 3 "/SNES_Slot/SNES_EXT_/PARD"
+Po -13780 197
+Le 353
+$EndPAD
+$PAD
+Sh "5" R 787 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 57 "GND"
+Po -10925 197
+Le 46326
+$EndPAD
+$PAD
+Sh "6" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 11 "/SNES_Slot/SNES_EXT_A11"
+Po -9843 197
+Le 41840
+$EndPAD
+$PAD
+Sh "7" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 10 "/SNES_Slot/SNES_EXT_A10"
+Po -8858 197
+Le 33
+$EndPAD
+$PAD
+Sh "8" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 31 "/SNES_Slot/SNES_EXT_A9"
+Po -7874 197
+Le 10
+$EndPAD
+$PAD
+Sh "9" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 30 "/SNES_Slot/SNES_EXT_A8"
+Po -6890 197
+Le 40686
+$EndPAD
+$PAD
+Sh "10" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 29 "/SNES_Slot/SNES_EXT_A7"
+Po -5906 197
+Le 32
+$EndPAD
+$PAD
+Sh "11" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 28 "/SNES_Slot/SNES_EXT_A6"
+Po -4921 197
+Le 26720752
+$EndPAD
+$PAD
+Sh "12" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 27 "/SNES_Slot/SNES_EXT_A5"
+Po -3937 197
+Le 44474
+$EndPAD
+$PAD
+Sh "13" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 26 "/SNES_Slot/SNES_EXT_A4"
+Po -2953 197
+Le 41300
+$EndPAD
+$PAD
+Sh "14" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 25 "/SNES_Slot/SNES_EXT_A3"
+Po -1969 197
+Le 26690192
+$EndPAD
+$PAD
+Sh "15" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 20 "/SNES_Slot/SNES_EXT_A2"
+Po -984 197
+Le 778140282
+$EndPAD
+$PAD
+Sh "16" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 9 "/SNES_Slot/SNES_EXT_A1"
+Po 0 197
+Le 45976
+$EndPAD
+$PAD
+Sh "17" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 8 "/SNES_Slot/SNES_EXT_A0"
+Po 984 197
+Le 26692384
+$EndPAD
+$PAD
+Sh "18" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 2 "/SNES_Slot/SNES_EXT_/IRQ"
+Po 1969 197
+Le 33
+$EndPAD
+$PAD
+Sh "19" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 33 "/SNES_Slot/SNES_EXT_D0"
+Po 2953 197
+Le 101
+$EndPAD
+$PAD
+Sh "20" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 34 "/SNES_Slot/SNES_EXT_D1"
+Po 3937 197
+Le 72
+$EndPAD
+$PAD
+Sh "21" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 35 "/SNES_Slot/SNES_EXT_D2"
+Po 4921 197
+Le 1362898584
+$EndPAD
+$PAD
+Sh "22" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 36 "/SNES_Slot/SNES_EXT_D3"
+Po 5906 197
+Le 193
+$EndPAD
+$PAD
+Sh "23" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 5 "/SNES_Slot/SNES_EXT_/RD"
+Po 6890 197
+Le 1
+$EndPAD
+$PAD
+Sh "24" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 56 "EXT_CIC_DATA1"
+Po 7874 197
+Le -268371600
+$EndPAD
+$PAD
+Sh "25" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 54 "CIC_RESET"
+Po 8858 197
+Le 44216
+$EndPAD
+$PAD
+Sh "26" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 58 "SNES_/RESET"
+Po 9843 197
+Le 26710224
+$EndPAD
+$PAD
+Sh "27" R 787 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 1 "+5VL"
+Po 10925 197
+Le -268358496
+$EndPAD
+$PAD
+Sh "28" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 41 "/SNES_Slot/SNES_EXT_PA0"
+Po 13780 197
+Le 40657
+$EndPAD
+$PAD
+Sh "29" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 43 "/SNES_Slot/SNES_EXT_PA2"
+Po 14764 197
+Le 42
+$EndPAD
+$PAD
+Sh "30" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 45 "/SNES_Slot/SNES_EXT_PA4"
+Po 15748 197
+Le 27776368
+$EndPAD
+$PAD
+Sh "31" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00008000
+Ne 51 "AUDIO_L"
+Po 16732 197
+Le 1376453976
+$EndPAD
+$PAD
+Sh "32" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 0 ""
+Po -16732 197
+Le -65794
+$EndPAD
+$PAD
+Sh "33" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 49 "/SNES_Slot/SNES_EXT_REFRESH"
+Po -15748 197
+Le -197380
+$EndPAD
+$PAD
+Sh "34" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 48 "/SNES_Slot/SNES_EXT_PA7"
+Po -14764 197
+Le 26706208
+$EndPAD
+$PAD
+Sh "35" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 4 "/SNES_Slot/SNES_EXT_/PAWR"
+Po -13780 197
+Le 48
+$EndPAD
+$PAD
+Sh "36" R 787 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 57 "GND"
+Po -10925 197
+Le 26698352
+$EndPAD
+$PAD
+Sh "37" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 12 "/SNES_Slot/SNES_EXT_A12"
+Po -9843 197
+Le 26703872
+$EndPAD
+$PAD
+Sh "38" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 13 "/SNES_Slot/SNES_EXT_A13"
+Po -8858 197
+Le 2513
+$EndPAD
+$PAD
+Sh "39" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 14 "/SNES_Slot/SNES_EXT_A14"
+Po -7874 197
+Le 48
+$EndPAD
+$PAD
+Sh "40" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 15 "/SNES_Slot/SNES_EXT_A15"
+Po -6890 197
+Le 14164224
+$EndPAD
+$PAD
+Sh "41" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 16 "/SNES_Slot/SNES_EXT_A16"
+Po -5906 197
+Le 14319616
+$EndPAD
+$PAD
+Sh "42" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 17 "/SNES_Slot/SNES_EXT_A17"
+Po -4921 197
+Le 14154752
+$EndPAD
+$PAD
+Sh "43" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 18 "/SNES_Slot/SNES_EXT_A18"
+Po -3937 197
+Le 192512
+$EndPAD
+$PAD
+Sh "44" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 19 "/SNES_Slot/SNES_EXT_A19"
+Po -2953 197
+Le 39524
+$EndPAD
+$PAD
+Sh "45" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 21 "/SNES_Slot/SNES_EXT_A20"
+Po -1969 197
+Le 1077956333
+$EndPAD
+$PAD
+Sh "46" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 22 "/SNES_Slot/SNES_EXT_A21"
+Po -984 197
+Le 39959
+$EndPAD
+$PAD
+Sh "47" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 23 "/SNES_Slot/SNES_EXT_A22"
+Po 0 197
+Le 1077938791
+$EndPAD
+$PAD
+Sh "48" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 24 "/SNES_Slot/SNES_EXT_A23"
+Po 984 197
+Le 40274
+$EndPAD
+$PAD
+Sh "49" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 6 "/SNES_Slot/SNES_EXT_/ROMSEL"
+Po 1969 197
+Le 40357
+$EndPAD
+$PAD
+Sh "50" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 37 "/SNES_Slot/SNES_EXT_D4"
+Po 2953 197
+Le 40449
+$EndPAD
+$PAD
+Sh "51" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 38 "/SNES_Slot/SNES_EXT_D5"
+Po 3937 197
+Le 1077956333
+$EndPAD
+$PAD
+Sh "52" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 39 "/SNES_Slot/SNES_EXT_D6"
+Po 4921 197
+Le 23484672
+$EndPAD
+$PAD
+Sh "53" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 40 "/SNES_Slot/SNES_EXT_D7"
+Po 5906 197
+Le 23484672
+$EndPAD
+$PAD
+Sh "54" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 7 "/SNES_Slot/SNES_EXT_/WR"
+Po 6890 197
+Le 23484672
+$EndPAD
+$PAD
+Sh "55" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 55 "EXT_CIC_DATA0"
+Po 7874 197
+Le 23484672
+$EndPAD
+$PAD
+Sh "56" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 53 "CIC_CLK"
+Po 8858 197
+Le 23484672
+$EndPAD
+$PAD
+Sh "57" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 32 "/SNES_Slot/SNES_EXT_CPU_CLK"
+Po 9843 197
+Le 23484672
+$EndPAD
+$PAD
+Sh "58" R 787 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 1 "+5VL"
+Po 10925 197
+Le 23484672
+$EndPAD
+$PAD
+Sh "59" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 42 "/SNES_Slot/SNES_EXT_PA1"
+Po 13780 197
+Le 23484672
+$EndPAD
+$PAD
+Sh "60" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 44 "/SNES_Slot/SNES_EXT_PA3"
+Po 14764 197
+Le 23484672
+$EndPAD
+$PAD
+Sh "61" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 46 "/SNES_Slot/SNES_EXT_PA5"
+Po 15748 197
+Le 1077941145
+$EndPAD
+$PAD
+Sh "62" R 591 2756 0 0 0
+Dr 0 0 0
+At CONN N 00000001
+Ne 52 "AUDIO_R"
+Po 16732 197
+Le 23484672
+$EndPAD
+$PAD
+Sh "" R 4921 3150 0 0 0
+Dr 0 0 0
+At CONN N 00C00000
+Ne 0 ""
+Po -15256 394
+Le 23484672
+$EndPAD
+$PAD
+Sh "" R 4921 3150 0 0 0
+Dr 0 0 0
+At CONN N 00C00000
+Ne 0 ""
+Po 15256 394
+Le 23484672
+$EndPAD
+$PAD
+Sh "" R 23622 3150 0 0 0
+Dr 0 0 0
+At CONN N 00C00000
+Ne 0 ""
+Po 0 394
+Le 23484672
+$EndPAD
+$PAD
+Sh "" R 2362 1969 0 0 0
+Dr 0 0 0
+At CONN N 00400000
+Ne 0 ""
+Po -10945 -3819
+Le 23484672
+$EndPAD
+$PAD
+Sh "" R 2283 2362 0 0 0
+Dr 0 0 0
+At CONN N 00400000
+Ne 0 ""
+Po 14331 -3780
+Le 23484672
+$EndPAD
+$EndMODULE  SNESCART_EXT2_SMTUSB
 $EndLIBRARY

snes/Makefile

@@ -1,4 +1,4 @@
-OBJS = header.ips reset.o65 main.o65 font.o65 palette.o65 data.o65 const.o65 logo.o65 logospr.o65 text.o65 dma.o65 menu.o65 pad.o65 time.o65 mainmenu.o65 sysinfo.o65 # gfx.o65 # vars.o65
+OBJS = header.ips reset.o65 main.o65 font.o65 palette.o65 data.o65 const.o65 logo.o65 logospr.o65 text.o65 dma.o65 menu.o65 pad.o65 time.o65 mainmenu.o65 sysinfo.o65 spc700.o65 spcplay.o65 # gfx.o65 # vars.o65
 
 all: clean menu.bin map
 

snes/const.a65

@@ -3,7 +3,7 @@ zero		.word	0
 bg2tile		.byt $20
 hdma_pal_src	.byt 44
 		.byt $60, $2d
-		.byt 14
+		.byt 10
 		.byt $00, $00
 		.byt 2
 		.byt $60, $2d
@@ -29,7 +29,7 @@ hdma_pal_src	.byt 44
 		.byt $20, $25
 		.byt 11
 		.byt $40, $29
-		.byt 31
+		.byt 29
 		.byt $60, $2d
 		.byt 2
 		.byt $20, $04
@@ -69,11 +69,11 @@ hdma_cg_addr_src
 		.byt $00, $00, $00, $00, $00, $00, $00, $00
 		.byt $00, $00, $00, $00, $00, $00, $00, $00
 		.byt $00
-hdma_mode_src	.byt 64, $03, $01, $05, $00
-hdma_scroll_src	.byt 64
-		.byt $00, $00, $ff, $0f
+hdma_mode_src	.byt 56, $03, $01, $05, $00
+hdma_scroll_src	.byt 56
+		.byt $00, $00, $ff, $03
 		.byt $01
-		.byt $fc, $00, $05, $00
+		.byt $fc, $00, $1f, $03
 		.byt $00
 ; colors:
 ; upper border: + #547fff -> 10,15,31
@@ -93,30 +93,31 @@ hdma_math_src	.byt 1 ; these are filled in...
 		.byt $00, $e0
 		.byt 0
 
-oam_data_l	.byt 75, 56, 31, $0e
-		.byt 83, 56, 1, $0e
-		.byt 91, 56, 2, $0e
-		.byt 99, 56, 3, $0e
-		.byt 107, 56, 4, $0e
-		.byt 115, 56, 5, $0e
-		.byt 123, 56, 6, $0e
-		.byt 131, 56, 7, $0e
-		.byt 75, 64, 8, $0e
-		.byt 83, 64, 9, $0e
-		.byt 91, 64, 10, $0e
-		.byt 99, 64, 11, $0e
-		.byt 107, 64, 12, $0e
-		.byt 115, 64, 13, $0e
-		.byt 123, 64, 14, $0e
-		.byt 131, 64, 15, $0e
-		.byt 75, 72, 16, $0e
-		.byt 83, 72, 17, $0e
-		.byt 91, 72, 18, $0e
-		.byt 99, 72, 19, $0e
-		.byt 75, 80, 24, $0e
-		.byt 83, 80, 25, $0e
-		.byt 91, 80, 26, $0e
-oam_data_h	.byt 0, 0, 0, 0, 0, 0, 0, 0
+oam_data_l	.byt 88, 56, 0, $08
+		.byt 96, 56, 1, $08
+		.byt 104, 56, 2, $08
+		.byt 112, 56, 3, $08
+		.byt 120, 56, 4, $08
+		.byt 128, 56, 5, $08
+		.byt 136, 56, 6, $08
+		.byt 88, 64, 7, $08
+		.byt 96, 64, 8, $08
+		.byt 104, 64, 9, $08
+		.byt 112, 64, 10, $08
+		.byt 88, 72, 14, $08
+		.byt 96, 72, 15, $08
+		.byt 157, 56, 21, $0a
+		.byt 171, 56, 22, $0c
+		.byt 179, 56, 23, $0c
+		.byt 171, 64, 24, $0c
+		.byt 171, 72, 26, $0c
+		.byt 171, 80, 28, $0c
+		.byt 171, 88, 30, $0c
+		.byt 171, 96, 32, $0c
+		.byt 193, 56, 34, $0e
+		.byt 193, 64, 35, $0e
+		.byt 193, 72, 36, $0e
+oam_data_h	.byt 0, 0, 0, 0, 0, 0, 0, 0, 0
 
 space64	.byt $20, $20, $20, $20, $20, $20, $20, $20
 	.byt $20, $20, $20, $20, $20, $20, $20, $20
@@ -153,6 +154,10 @@ sysinfo_win_x	.byt 10
 sysinfo_win_y	.byt 9
 sysinfo_win_w	.byt 43
 sysinfo_win_h	.byt 17
+last_win_x	.byt 2
+last_win_y	.byt 12
+last_win_w	.byt 60
+last_win_h	.byt 5
 
 text_mm_file		.byt "File Browser", 0
 text_mm_last		.byt "Run last game", 0
@@ -162,3 +167,25 @@ text_mm_vmode_menu	.byt "Menu video mode", 0
 text_mm_vmode_game	.byt "Game video mode", 0
 text_mm_sysinfo		.byt "System Information", 0
 text_statusbar_keys	.byt "A:Select B:Back X:Menu", 0
+text_last		.byt "Run previous ROM: Press Start again to confirm", 0
+text_system		.byt "CPU Rev.: x  PPU1 Rev.: y  PPU2 Rev.: z",0
+
+
+text_spcplay		.byt "SPC Music Player", 0
+spcplay_win_x		.byt 15
+spcplay_win_y		.byt 15
+spcplay_win_w		.byt 33
+spcplay_win_h		.byt 5
+
+text_spcload		.byt "Loading SPC data to SPC700...", 0
+text_spcstarta		.byt "**** Now playing SPC tune ****", 0
+text_spcstartb		.byt "Name:  ",0
+text_spcstartc		.byt "Song:  ",0
+text_spcstartd		.byt "Artist:",0
+
+spcstart_win_x		.byt 10
+spcstart_win_y		.byt 13
+spcstart_win_w		.byt 44
+spcstart_win_h		.byt 9
+
+text_spcid		.byt "SNES-SPC700"

snes/data.a65

@@ -14,7 +14,9 @@ dirent_bank	.word	0
 dirent_type	.byt 0
 dirend_onscreen	.byt 0
 dirlog_idx	.byt 0,0,0 ; long ptr
-
+direntry_fits_idx
+		.byt 0,0
+longptr		.byt 0,0,0 ; general purpose long ptr
 ;----------parameters for text output----------
 print_x	.byt 0		;x coordinate
 	.byt 0
@@ -24,9 +26,10 @@ print_src	.word 0	;source data address
 print_bank	.byt 0	;source data bank
 print_pal	.word 0	;palette number for text output
 print_temp	.word 0 ;work variable
-print_count	.byt 0	;how many characters may be printed?
-print_count_tmp .byt 0	;work variable
-print_done	.word 0  ;how many characters were printed?
+print_ptr	.byt 0,0,0 ;read pointer
+print_count	.word 0	;how many characters may be printed?
+print_done	.word 0 ;how many characters were printed?
+print_over	.byt 0  ;was the string printed incompletely?
 ;----------parameters for dma----------
 dma_a_bank	.byt 0
 dma_a_addr	.word 0
@@ -171,5 +174,27 @@ dirlog  .word	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 	.word	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 	.word	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 
-infloop		.byt 0,0  ; to be filled w/ 80 FE
+direntry_fits
+	.byt	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+	.byt	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+direntry_xscroll_state
+	.word	0
+direntry_xscroll
+	.word	0
+direntry_xscroll_wait
+	.word	0
+infloop	.byt 0,0  ; to be filled w/ 80 FE
+tgt_bright
+	.byt 0
+cur_bright
+	.byt 0
+
+;------------------------
+saved_sp
+	.word 0
+warm_signature
+	.word 0
+snes_system_config
+	.word 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+
 wram_fadeloop	.byt 0

snes/dma.a65

@@ -1,21 +1,4 @@
 
-dma0:
-	rep #$10 : .xl
-	sep #$20 : .as
-	lda dma_mode
-	sta $4300
-	lda dma_b_reg
-	sta $4301
-	lda dma_a_bank
-	ldx dma_a_addr
-	stx $4302
-	sta $4304
-	ldx dma_len
-	stx $4305
-	lda #$01
-	sta $420b
-	rts
-
 setup_hdma:
 	sep #$20 : .as
 	rep #$10 : .xl
@@ -67,8 +50,11 @@ setup_hdma:
 	sty $4352
 	sta $4354
 
-;	lda #$06
-;	sta $420c		;enable HDMA ch. 1+2
+	lda #$3a
+	sta $420c		;enable HDMA ch. 1+3+4+5
+	jsr waitblank
+	lda #$3e
+	sta $420c		;enable HDMA ch. 2 too
 	lda #$81		;VBlank NMI + Auto Joypad Read
 	sta $4200		;enable V-BLANK NMI
 	rts

snes/dma.i65

@@ -1,13 +1,22 @@
+#define hash #
+#define f(x) x
+#define imm(a) f(hash)a
+
 #define DMA0(mode, len, a_bank, a_addr, b_reg)\
-	lda mode \
-: 	sta dma_mode \
+	php \
+:	sep imm($20) : .as \
+:	rep imm($10) : .xl \
+:	lda mode \
+: 	sta $4300 \
 :	ldx a_addr \
 :	lda a_bank \
-:	stx dma_a_addr \
-:	sta dma_a_bank \
+:	stx $4302 \
+:	sta $4304 \
 :	ldx len \
-:	stx dma_len \
+:	stx $4305 \
 :	lda b_reg \
-:	sta dma_b_reg \
-:	jsr dma0
+:	sta $4301 \
+:	lda imm($01) \
+:	sta $420b \
+:	plp
 

snes/logospr.a65

@@ -1,80 +1,69 @@
-logospr .byt  $00, $00, $00, $00, $00, $00, $00, $00
+logospr .byt  $50, $2f, $75, $2a, $7e, $21, $4a, $14
+        .byt  $6f, $3e, $5b, $1b, $60, $20, $54, $00
+        .byt  $10, $0f, $15, $0a, $1f, $00, $3e, $01
+        .byt  $1e, $01, $3a, $05, $01, $1e, $21, $1f
+        .byt  $f4, $8f, $fc, $83, $7f, $84, $fe, $05
+        .byt  $fe, $07, $fb, $07, $fe, $02, $fe, $00
+        .byt  $0c, $8b, $08, $0f, $03, $04, $83, $80
+        .byt  $03, $00, $07, $04, $00, $01, $01, $01
+        .byt  $0f, $f8, $4f, $b8, $f7, $00, $b7, $58
+        .byt  $af, $e0, $ff, $f0, $0f, $10, $df, $e0
+        .byt  $08, $f8, $40, $b8, $f8, $08, $f8, $08
+        .byt  $e0, $10, $f0, $10, $00, $e0, $c0, $c0
+        .byt  $ff, $00, $fb, $00, $f9, $00, $f8, $00
+        .byt  $f8, $00, $f0, $00, $f0, $00, $f0, $00
+        .byt  $00, $01, $03, $03, $00, $00, $00, $00
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $00, $ff, $00, $7f, $fe, $61, $eb, $0a
+        .byt  $7f, $00, $1f, $00, $00, $00, $00, $00
+        .byt  $00, $ff, $00, $ff, $3f, $40, $35, $39
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $0f, $e0, $1f, $c0, $bf, $c0, $ff, $00
+        .byt  $ff, $00, $fe, $00, $70, $00, $00, $00
+        .byt  $10, $e0, $60, $80, $c0, $c0, $00, $00
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $f0, $00, $e0, $00, $e0, $00, $c0, $00
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $7f, $2b, $5e, $1f, $7e, $3f, $6b, $2b
+        .byt  $4f, $0f, $da, $1a, $c0, $22, $c0, $35
+        .byt  $0a, $1e, $3e, $1e, $00, $1e, $14, $0a
+        .byt  $30, $20, $25, $25, $1d, $1d, $0a, $0a
+        .byt  $ff, $00, $ff, $00, $ff, $00, $ff, $00
+        .byt  $ff, $00, $ff, $00, $ff, $00, $ff, $00
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $ff, $00, $ff, $00, $83, $00, $00, $00
+        .byt  $80, $00, $80, $00, $80, $00, $80, $00
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $e0, $00, $e0, $00, $80, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $e0, $a0, $a1, $a0, $41, $80, $01, $c0
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $de, $3f, $9e, $7f, $bf, $7f, $bf, $7f
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $ff, $ff, $fe, $ff, $01, $fe, $00, $fe
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $ff, $00, $ff, $00, $ff, $00, $fe, $01
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $00, $00, $80, $80, $00, $80, $80, $80
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $ff, $7f, $7f, $7f, $7f, $7f, $7f, $ff
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $2f, $07, $13, $07, $11, $02, $48, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $df, $d8, $cb, $cc, $cd, $ce, $87, $86
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $ff, $ff, $ff, $ff, $00, $ff, $c5, $3b
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $ff, $00, $ff, $00, $ff, $00, $7f, $83
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $c0, $e0, $a0, $e0, $00, $00, $80, $80
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $ff, $0f, $ff, $3f, $7f, $bf, $7f, $ff
+        .byt  $c0, $3f, $d5, $2a, $ff, $00, $7f, $00
+        .byt  $7f, $00, $7f, $00, $3f, $00, $0f, $00
+        .byt  $3f, $3f, $3f, $3f, $3f, $3f, $1e, $1e
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $04, $00, $08, $00, $10, $00, $10, $00
+        .byt  $ff, $00, $ff, $00, $ff, $00, $ff, $00
+        .byt  $ff, $00, $ff, $00, $fe, $00, $fc, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $f8, $f8, $f0, $f0, $e0, $e0, $e0, $e0
-        .byt  $7f, $20, $7f, $20, $60, $00, $00, $20
-        .byt  $00, $3f, $c0, $3f, $ff, $40, $ff, $00
-        .byt  $3f, $20, $3f, $20, $20, $3f, $40, $7f
-        .byt  $5f, $7f, $1f, $3f, $20, $7f, $20, $3f
-        .byt  $c1, $01, $80, $00, $01, $01, $40, $40
-        .byt  $00, $c0, $40, $c0, $c0, $40, $c0, $40
-        .byt  $ff, $7f, $ff, $3e, $7e, $be, $3f, $bf
-        .byt  $bf, $bf, $bf, $ff, $3f, $ff, $3f, $ff
-        .byt  $ff, $00, $ff, $00, $01, $01, $01, $81
-        .byt  $80, $fc, $5c, $4c, $00, $00, $18, $00
-        .byt  $fe, $01, $ff, $01, $01, $ff, $00, $fe
-        .byt  $3f, $fd, $bb, $db, $ff, $ff, $e7, $e7
-        .byt  $00, $00, $00, $00, $00, $00, $c0, $c0
-        .byt  $80, $80, $00, $00, $01, $00, $03, $00
-        .byt  $ff, $ff, $ff, $ff, $ff, $ff, $3f, $ff
-        .byt  $7f, $ff, $ff, $ff, $fe, $fe, $fc, $fc
-        .byt  $46, $00, $41, $00, $40, $00, $40, $00
-        .byt  $40, $00, $80, $00, $80, $00, $00, $00
-        .byt  $81, $81, $80, $80, $80, $80, $80, $80
-        .byt  $80, $80, $00, $00, $00, $00, $00, $00
-        .byt  $44, $44, $00, $00, $78, $00, $03, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $bb, $83, $ff, $ff, $07, $07, $00, $00
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $00, $00, $00, $00, $03, $00, $fc, $00
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $ff, $ff, $ff, $ff, $fc, $fc, $00, $00
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $60, $00, $c0, $00, $00, $00, $00, $00
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $80, $80, $00, $00, $00, $00, $00, $00
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $e0, $5f, $a0, $5f, $bf, $40, $bf, $60
-        .byt  $bf, $7f, $bf, $7f, $80, $40, $00, $40
-        .byt  $20, $7f, $20, $3f, $3f, $3f, $3f, $3f
-        .byt  $3f, $3f, $3f, $3f, $3f, $00, $bf, $80
-        .byt  $00, $80, $10, $c0, $c0, $40, $e0, $40
-        .byt  $c0, $c0, $e0, $e0, $60, $60, $00, $40
-        .byt  $7f, $ff, $2f, $af, $bf, $bf, $9f, $9f
-        .byt  $bf, $bf, $9f, $bf, $9f, $3f, $bf, $3f
-        .byt  $13, $00, $10, $00, $10, $00, $08, $00
-        .byt  $08, $00, $08, $00, $08, $00, $00, $00
-        .byt  $e0, $e0, $e0, $e0, $e0, $e0, $f0, $f0
-        .byt  $f0, $f0, $f0, $f0, $f0, $f0, $f8, $f8
-        .byt  $fc, $00, $00, $00, $00, $00, $00, $00
+        .byt  $80, $00, $80, $00, $80, $00, $80, $00
+        .byt  $80, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
@@ -93,36 +82,67 @@ logospr .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $3f, $7f, $3f, $7f, $c0, $7f, $80, $3f
-        .byt  $3f, $3f, $1f, $1f, $00, $00, $00, $00
-        .byt  $80, $80, $80, $80, $00, $40, $40, $40
-        .byt  $40, $7f, $60, $7f, $3f, $3f, $1f, $1f
-        .byt  $80, $c0, $80, $c0, $00, $c0, $40, $c0
-        .byt  $80, $80, $00, $00, $00, $00, $00, $00
-        .byt  $3f, $3f, $3f, $3f, $3f, $3f, $3f, $7f
-        .byt  $7f, $ff, $ff, $ff, $ff, $ff, $ff, $ff
-        .byt  $08, $00, $08, $00, $08, $00, $00, $00
-        .byt  $00, $00, $00, $00, $20, $00, $40, $00
-        .byt  $f0, $f0, $f0, $f0, $f0, $f0, $f0, $f0
-        .byt  $f0, $f0, $e0, $e0, $c0, $c0, $80, $80
+        .byt  $00, $20, $c0, $00, $80, $40, $c0, $40
+        .byt  $00, $80, $40, $c0, $c0, $c0, $40, $00
+        .byt  $00, $20, $40, $00, $40, $00, $40, $00
+        .byt  $00, $40, $40, $00, $40, $00, $00, $40
+        .byt  $7b, $06, $3a, $47, $3e, $43, $4c, $41
+        .byt  $0f, $00, $1f, $10, $0f, $10, $1f, $10
+        .byt  $06, $01, $06, $01, $02, $01, $30, $03
+        .byt  $08, $02, $05, $00, $0b, $00, $05, $00
+        .byt  $fc, $02, $d8, $7c, $80, $00, $80, $00
+        .byt  $80, $40, $c0, $40, $80, $80, $00, $00
+        .byt  $00, $00, $00, $40, $40, $00, $40, $40
+        .byt  $80, $00, $00, $00, $00, $80, $80, $00
+        .byt  $07, $19, $0e, $10, $14, $1a, $18, $16
+        .byt  $10, $0e, $02, $1c, $00, $1e, $10, $1e
+        .byt  $0e, $08, $0e, $00, $0e, $0a, $0e, $06
+        .byt  $1e, $1e, $0e, $0c, $0e, $0e, $0e, $0e
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $0b, $1f, $15, $1e, $1e, $1e, $06, $1e
+        .byt  $0f, $1f, $1f, $0f, $0f, $0f, $0f, $0f
+        .byt  $04, $0e, $0b, $0f, $01, $0f, $09, $0e
+        .byt  $09, $0f, $14, $1f, $0a, $0f, $05, $0f
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $0f, $1f, $0f, $0f, $05, $05, $0a, $0a
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $0f, $0f, $1f, $1f, $1f, $05, $1f, $0a
+        .byt  $1f, $08, $1f, $00, $1f, $0a, $1f, $15
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $00, $00, $00, $00, $00, $02, $00, $10
+        .byt  $00, $0e, $00, $15, $10, $0f, $10, $0f
+        .byt  $1f, $1f, $1f, $1f, $1d, $1d, $0f, $0f
+        .byt  $11, $11, $0a, $0a, $10, $10, $10, $10
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $0a, $05, $05, $0a, $0f, $00, $0f, $00
+        .byt  $0f, $0a, $07, $05, $00, $00, $00, $00
+        .byt  $0a, $0a, $05, $05, $0f, $0f, $0f, $0f
+        .byt  $05, $05, $02, $02, $00, $00, $00, $00
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $5f, $2f, $5f, $2f, $70, $2f, $40, $1f
         .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $1f, $00, $1f, $00, $1f, $00, $3f, $00
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $00, $00, $00, $00, $00, $00, $00, $00
+        .byt  $09, $00, $01, $08, $0f, $08, $05, $00
+        .byt  $03, $05, $07, $05, $00, $02, $06, $00
+        .byt  $07, $00, $07, $00, $05, $02, $03, $00
+        .byt  $04, $03, $05, $02, $00, $06, $00, $02
+        .byt  $00, $06, $02, $04, $06, $04, $00, $02
+        .byt  $02, $00, $00, $02, $02, $00, $02, $00
+        .byt  $00, $02, $00, $02, $02, $06, $04, $06
+        .byt  $06, $06, $04, $06, $06, $06, $06, $06
+        .byt  $02, $04, $00, $06, $02, $04, $00, $06
+        .byt  $06, $06, $04, $06, $00, $04, $00, $00
+        .byt  $06, $06, $06, $06, $06, $06, $06, $06
+        .byt  $06, $06, $06, $04, $04, $02, $00, $06

snes/main.a65

@@ -4,13 +4,45 @@
 GAME_MAIN:
 	sep #$20 : .as
 	lda #$00
-	sta @AVR_CMD
+	sta @MCU_CMD		; clear MCU command register
 	rep #$20 : .al
 	lda #$0000
-	sta @AVR_PARAM
-	sta @AVR_PARAM+2
+	sta @MCU_PARAM		; clear MCU command parameters
+	sta @MCU_PARAM+2
 	sep #$20 : .as
 	stz $4200 ; inhibit VBlank NMI
+	rep #$20 : .al
+	lda @warm_signature	; Was CMD_RESET issued before reset?
+	cmp #$fa50		; If yes, then perform warm boot procedure
+	bne coldboot
+	lda #$0000
+	sta @warm_signature
+	lda @saved_sp		; Restore previous stack pointer
+	tcs
+	sep #$20 : .as
+
+	jsr killdma		; The following initialization processes must not touch memory
+	jsr waitblank		; structures used by the main menu !
+	jsr snes_init
+	cli
+	lda #$01
+	sta $420d 		; fast cpu
+	jsr setup_gfx
+	jsr colortest
+	jsr tests
+	jsr setup_hdma
+	lda #$0f
+	sta cur_bright
+	sta tgt_bright
+	sta $2100
+
+	jmp @set_bank		; Set bios bank, just to be sure
+set_bank:
+	plp			; Restore processor state
+	rts			; Jump to the routine which called the sub-routine issuing CMD_RESET
+
+coldboot:							; Regular, cold-start init
+	sep #$20 : .as
 	jsr killdma
 	jsr waitblank
 	jsr snes_init
@@ -18,9 +50,11 @@ GAME_MAIN:
 	sta $420d ; fast cpu
 	jsr setup_gfx
 	jsr colortest
-	jsr setup_hdma
 	jsr menu_init
 	jsr tests
+	jsr setup_hdma
+	jsr screen_on
+
 	sep #$20 : .as
 	lda @RTC_STATUS
 	beq +
@@ -32,50 +66,93 @@ GAME_MAIN:
 	jmp @infloop	;infinite loop in WRAM
 
 killdma:
-	stz $420b
-	stz $420c
+	stz $4300
+	stz $4301
+	stz $4302
+	stz $4303
+	stz $4304
+	stz $4305
+	stz $4306
+	stz $4307
+	stz $4308
+	stz $4309
+	stz $430a
+	stz $430b
 	stz $4310
 	stz $4311
 	stz $4312
 	stz $4313
 	stz $4314
+	stz $4315
+	stz $4316
+	stz $4317
+	stz $4318
+	stz $4319
+	stz $431a
+	stz $431b
 	stz $4320
 	stz $4321
 	stz $4322
 	stz $4323
 	stz $4324
+	stz $4325
+	stz $4326
+	stz $4327
+	stz $4328
+	stz $4329
+	stz $432a
+	stz $432b
 	stz $4330
 	stz $4331
 	stz $4332
 	stz $4333
 	stz $4334
+	stz $4335
+	stz $4336
+	stz $4337
+	stz $4338
+	stz $4339
+	stz $433a
+	stz $433b
 	stz $4340
 	stz $4341
 	stz $4342
 	stz $4343
 	stz $4344
+	stz $4345
+	stz $4346
+	stz $4347
+	stz $4348
+	stz $4349
+	stz $434a
+	stz $434b
 	stz $4350
 	stz $4351
 	stz $4352
 	stz $4353
 	stz $4354
-	stz $4360
-	stz $4361
-	stz $4362
-	stz $4363
-	stz $4364
+	stz $4355
+	stz $4356
+	stz $4357
+	stz $4358
+	stz $4359
+	stz $435a
+	stz $435b
+
+	stz $420b
+	stz $420c
 	rts
 
-
-
-
 waitblank:
+	php
+	sep #$30 : .as : .xs
 -	lda $4212
 	and #$80
 	bne -
 -	lda $4212
 	and #$80
 	beq -
+	plp
 	rts
 
 colortest:
@@ -91,21 +168,14 @@ setup_gfx:
 	stz $420b
 	stz $420c
 ;clear tilemap buffers
-	ldx #$0000
+	ldx #$8000
 	stx $2181
-	lda #$01
+	lda #$00
 	sta $2183
-	DMA0(#$08, #0, #^zero, #!zero, #$80)
+	DMA0(#$08, #$8000, #^zero, #!zero, #$80)
 
-;copy 2bpp font (can be used as 4-bit lores font!)
-	ldx #$4000
-	stx $2116
-	DMA0(#$01, #$2000, #^font2, #!font2, #$18)
-
-;copy 4bpp font
-	ldx #$0000
-	stx $2116
-	DMA0(#$01, #$4000, #^font4, #!font4, #$18)
+;generate fonts
+	jsr genfonts
 
 ;clear BG1 tilemap
 	ldx #BG1_TILE_BASE
@@ -127,27 +197,33 @@ setup_gfx:
 	stx $2116
 	DMA0(#$01, #$4000, #^logo, #!logo, #$18)
 
-;copy logo tilemap
+;generate logo tilemap
 	ldx #BG1_TILE_BASE
 	stx $2116
-	DMA0(#$01, #$280, #^logomap, #!logomap, #$18)
+	ldx #$0100
+-	stx $2118
+	inx
+	cpx #$01e0
+	bne -
+
 
 ;copy sprites tiles
 	ldx #OAM_TILE_BASE
 	stx $2116
-	DMA0(#$01, #$400, #^logospr, #!logospr, #$18)
+	DMA0(#$01, #$500, #^logospr, #!logospr, #$18)
 
 ;set OAM tables
 	ldx #$0000
 	stx $2102
-	DMA0(#$00, #$5C, #^oam_data_l, #!oam_data_l, #$04)
+	DMA0(#$00, #$60, #^oam_data_l, #!oam_data_l, #$04)
 	ldx #$0100
 	stx $2102
-	DMA0(#$00, #$08, #^oam_data_h, #!oam_data_h, #$04)
+	DMA0(#$00, #$09, #^oam_data_h, #!oam_data_h, #$04)
 
 ;set palette
 	stz $2121
 	DMA0(#$00, #$200, #^palette, #!palette, #$22)
+	stz $2121
 
 ;copy hdma tables so we can work "without" the cartridge
 ;palette
@@ -200,7 +276,7 @@ setup_gfx:
 tests:
 	sep #$20 : .as		;8-bit accumulator
 	rep #$10 : .xl		;16-bit index
-	lda #$03		;mode 3, mode 5 via HDMA :D
+	lda #$03		;mode 3, mode 5 via HDMA
 	sta $2105
 	lda #$58		;Tilemap addr 0xB000
 	ora #$02		;SC size 32x64
@@ -226,13 +302,19 @@ tests:
 	lda #$1f
 	sta $212e
 	sta $212f
-	stz $2121
-	lda #$0f
-	sta $2100		;screen on, full brightness
-	lda #9
+;	stz $2121
+	lda #8
 	sta bar_yl
+	stz cur_bright
+	stz tgt_bright
 	rts
-	
+
+screen_on:
+	stz $2100		;screen on, 0% brightness
+	lda #$0f
+	sta tgt_bright
+	rts
+
 snes_init:
 	sep #$20 : .as		;8-bit accumulator
 	rep #$10 : .xl		;16-bit index
@@ -250,6 +332,7 @@ snes_init:
 	stz $420a		;
 	stz $420b		;
 	stz $420c		;
+	stz $420d		;
 	lda #$8f
 	sta $2100		;INIDISP: force blank
 	lda #$03		; 8x8+16x16; name=0; base=3
@@ -283,7 +366,7 @@ snes_init:
 	stz $2113		;
 	stz $2114		;
 	stz $2114		;
-	lda #$80		
+	lda #$80
 	sta $2115		;
 	stz $2116		;
 	stz $2117		;
@@ -341,7 +424,7 @@ snes_init:
 
 fadeloop:
 	sep #$30 : .as : .xs
-	ldx #$0f
+	ldx cur_bright
 	and #$00
 	pha
 	plb
@@ -387,3 +470,59 @@ fadeloop_start
 
 fadeloop_end:
 	.byt $ff
+
+genfonts:
+	php
+	rep #$10 : .xl
+	sep #$20 : .as
+
+;clear VRAM font areas
+	ldx #$0000
+	stx $2116
+	DMA0(#$09, #$4000, #^zero, #!zero, #$18)
+
+	ldx #$4000
+	stx $2116
+	DMA0(#$09, #$2000, #^zero, #!zero, #$18)
+
+	sep #$10 : .xs
+	rep #$20 : .al
+
+	stz $2116
+	ldx #$01
+	stx $4300
+	ldx #^font
+	stx $4304
+	lda #!font
+	sta $4302
+	lda #$0010
+	sta $4305
+	ldx #$18
+	stx $4301
+	lda #$0000
+-	sta $2116
+	ldx #$10
+	stx $4305
+	ldx #$01
+	stx $420b
+	clc
+	adc #$20
+	cmp #$2000
+	bne -
+	ldx #^font
+	stx $4304
+	lda #!font
+	sta $4302
+	lda #$4000
+-	sta $2116
+	ldx #$10
+	stx $4305
+	ldx #$01
+	stx $420b
+	clc
+	adc #$10
+	cmp #$5000
+	bne -
+	plp
+	rts
+

snes/memmap.i65

@@ -6,22 +6,35 @@
 /* These must be defined as constants, because they're used
  * in calculation that is sent to PPU as parameters */
 
+#define APUIO0		$2140
+#define APUIO1		$2141
+#define APUIO2		$2142
+#define APUIO3		$2143
+
 #define BG1_TILE_BASE	$5800
 #define BG2_TILE_BASE	$5000
 
 #define OAM_TILE_BASE	$6000
 
-#define BG1_TILE_BUF	$7FB000
-#define BG2_TILE_BUF	$7FA000
+#define BG1_TILE_BUF	$7EB000
+#define BG2_TILE_BUF	$7EA000
 
-#define BG1_TILE_BAK	$7F9000
-#define BG2_TILE_BAK	$7F8000
+#define BG1_TILE_BAK	$7E9000
+#define BG2_TILE_BAK	$7E8000
 
-#define AVR_CMD		$307000
-#define AVR_PARAM	$307004
+#define MCU_CMD		$307000
+#define MCU_PARAM	$307004
 #define RTC_STATUS	$307100
-#define SYSINFO_BLK	$307110
+#define LAST_STATUS	$307101
+#define SYSINFO_BLK	$307200
+#define LAST_GAME	$307420
 
 #define ROOT_DIR	$C10000
 
 #define CMD_SYSINFO	$03
+#define CMD_LOADSPC	$05
+#define CMD_RESET	$06
+
+#define SPC_DATA	$FD0000
+#define SPC_HEADER	$FE0000
+#define SPC_DSP_REGS	$FE0100

snes/menu.a65

@@ -23,6 +23,8 @@ menu_init:
 	ldx #$0000
 	stx dirptr_idx
 	stx menu_sel
+	stx direntry_xscroll
+	stx direntry_xscroll_state
 	lda #$01
 	sta menu_dirty
 	rep #$20 : .al
@@ -40,13 +42,13 @@ menuloop_s1
 	lda isr_done
 	lsr
 	bcc menuloop_s1
-
 	stz isr_done
 	jsr printtime
 	jsr menu_updates	;update stuff, check keys etc
 	lda menu_dirty		;is there ANY reason to redraw the menu?
 	cmp #$01
 	beq menuloop_redraw 	;then do
+	jsr scroll_direntry
 	bra menuloop_s1
 menuloop_redraw
 	stz menu_dirty
@@ -126,6 +128,9 @@ menu_updates:
 	lda #$80
 	and pad1trig+1
 	bne key_b
+	lda #$10
+	and pad1trig+1
+	bne key_start
 	lda #$20
 	and pad1trig+1
 	bne key_select
@@ -157,10 +162,12 @@ key_a
 key_x
 	jsr menu_key_x
 	bra menuupd_out
-
 key_select
 	jsr menu_key_select
 	bra menuupd_out
+key_start
+	jsr menu_key_start
+	bra menuupd_out
 
 menuupd_out
 	lda #$09
@@ -179,6 +186,7 @@ menu_redraw_out
 redraw_filelist
 	ldy #$0000
 	sty dirptr_idx
+	sty direntry_fits_idx
 	stz dirend_idx
 	stz dirend_onscreen
 redraw_filelist_loop
@@ -206,6 +214,7 @@ redraw_filelist_loop
 	sta @dirent_type
 	sty dirptr_idx
 	jsr print_direntry
+	inc direntry_fits_idx
 	bra redraw_filelist_loop
 redraw_filelist_dirend
 	dey                        ; recover last valid direntry number
@@ -262,6 +271,10 @@ dirent_is_file
 	lda #$0000
 	bra dirent_type_cont
 +
+	cmp #$0003  ;SPC -> palette 2
+	bne +
+	lda #$0002
+	bra dirent_type_cont
 	cmp #$0004	;IPS -> palette 2 (green)
 	bne +
         lda #$0002
@@ -284,6 +297,8 @@ dirent_type_cont
 	txa
 	clc
 	adc @fd_fnoff
+	clc
+	adc @direntry_xscroll
 	sta @fd_fnoff
 	plb
 
@@ -298,12 +313,14 @@ dirent_type_cont
 	lda dirent_bank
 	sta print_bank
 	jsr hiprint
-
 	lda cursor_x
 	clc
 	adc print_done
 	sta print_x
 
+	lda print_over
+	ldy direntry_fits_idx
+	sta !direntry_fits, y
 	lda #54
 	sec
 	sbc print_done
@@ -339,6 +356,7 @@ dirent_type_cont_2
 	rts
 
 menu_key_down:
+	jsr scroll_direntry_clean
 	lda listdisp
 	dec
 	cmp menu_sel
@@ -372,6 +390,7 @@ down_out
 	rts
 
 menu_key_up:
+	jsr scroll_direntry_clean
 	lda menu_sel
 	bne up_noscroll
 	lda #$01
@@ -394,6 +413,7 @@ up_out
 	rts
 
 menuupd_lastcursor
+	jsr scroll_direntry_clean
 	lda dirend_idx
 	lsr
 	lsr
@@ -402,6 +422,8 @@ menuupd_lastcursor
 
 ; go back one page
 menu_key_left:
+	stz direntry_xscroll
+	stz direntry_xscroll_state
 	lda #$01            ; must redraw afterwards
 	sta menu_dirty
 	rep #$20 : .al
@@ -427,6 +449,8 @@ menu_key_left:
 
 ; go forth one page
 menu_key_right:
+	stz direntry_xscroll
+	stz direntry_xscroll_state
 	sep #$20 : .as
 	lda dirend_onscreen
 	bne menuupd_lastcursor
@@ -447,16 +471,15 @@ menu_key_a:
 	rts
 
 menu_key_select:
-	lda barstep
-	beq do_setup448
-do_setup224
-	jsr setup_224
 	rts
-do_setup448
-	jsr setup_448
+
+menu_key_start:
+	jsr select_last_file
 	rts
 
 menu_key_b:
+	stz direntry_xscroll
+	stz direntry_xscroll_state
 	rep #$20 : .al
 	lda dirstart_addr
 	beq skip_key_b
@@ -482,6 +505,8 @@ select_item:
 	lda [dirptr_addr], y
 	cmp #$01
 	beq sel_is_file
+	cmp #$03
+	beq sel_is_spc
 	cmp #$04
 	beq sel_is_file
 	cmp #$80
@@ -499,24 +524,28 @@ sel_is_parent
 sel_is_dir
 	jsr select_dir
 	bra select_item_cont
+sel_is_spc
+	jsr select_spc
+	bra select_item_cont
 
 select_file:
-	; have avr load the rom
+	; have MCU load the rom
 	dey
 	rep #$20 : .al
 	lda [dirptr_addr], y
 	and #$00ff
-	sta @AVR_PARAM+2
+	sta @MCU_PARAM+2
 	dey
 	dey
 	lda [dirptr_addr], y
-	sta @AVR_PARAM
+	sta @MCU_PARAM
 	sep #$20 : .as
-	lda #$01
-	sta @AVR_CMD
 	lda #$00
 	sta @$4200
 	sei
+	lda #$01
+	sta @MCU_CMD
+select_file_fade:
 	jsl @wram_fadeloop
 	rts
 
@@ -576,6 +605,8 @@ select_dir:
 	sta @dirstart_addr
 	lda #$0000
 	sta @menu_sel
+	sta @direntry_xscroll
+	sta @direntry_xscroll_state
 	sep #$20 : .as
 	lda #$01
 	sta @menu_dirty
@@ -614,6 +645,27 @@ select_parent:
 	sta @menu_dirty
 	rts
 
+select_spc:
+	dey
+	rep #$20 : .al
+	lda [dirptr_addr], y
+	and #$00ff
+	sta @MCU_PARAM+2
+	dey
+	dey
+	lda [dirptr_addr], y
+	sta @MCU_PARAM
+	sep #$20 : .as
+	lda #CMD_LOADSPC
+	sta @MCU_CMD
+wait_spc:
+	lda @MCU_CMD
+	cmp #$00
+	bne wait_spc
+	jsr spcplayer
+	jsr restore_screen
+	rts
+
 menu_key_x:
 	jsr mainmenu
 	rts
@@ -632,10 +684,10 @@ setup_224_adjsel
 +
 	lda #18*64
 	sta textdmasize
-	lda #$0007
+	lda #$000b
 	sta hdma_scroll+8
 	sep #$20 : .as
-	lda #$07
+	lda #$0b
 	sta $2110
 	lda #$00
 	sta $2110
@@ -667,32 +719,6 @@ setup_224_adjsel
 	plp
 	rts
 
-setup_448:
-	php
-	rep #$30 : .xl : .al
-	lda #36
-	sta listdisp
-	lda #36*64
-	sta textdmasize
-	lda #$ffc6
-	sta hdma_scroll+8
-	sep #$20 : .as
-	lda #$c6
-	sta $2110
-	lda #$ff
-	sta $2110
-	lda #$01
-	sta barstep
-	ora #$08
-	sta $2133
-	lda #$04
-	sta hdma_math_selection
-	lda #$01
-	sta vidmode
-	sta menu_dirty
-	plp
-	rts
-
 menu_statusbar
 	pha
 	phx
@@ -723,3 +749,142 @@ menu_statusbar
 	pla
 	rts
 
+select_last_file:
+	php
+	sep #$20 : .as
+	rep #$10 : .xl
+	lda @LAST_STATUS
+	bne +
+	plp
+	rts
++	jsr backup_screen
+	lda #^text_last
+	sta window_tbank
+	ldx #!text_last
+	stx window_taddr
+	lda @last_win_x
+	sta window_x
+	inc
+	inc
+	sta bar_xl
+	pha
+	lda @last_win_y
+	sta window_y
+	inc
+	sta bar_yl
+	inc
+	pha
+	lda @last_win_w
+	sta window_w
+	lda @last_win_h
+	sta window_h
+	jsr draw_window
+	stz print_pal
+	lda #^LAST_GAME
+	ldx #!LAST_GAME
+	sta print_bank
+	stx print_src
+	stz print_pal
+	pla
+	sta print_y
+	pla
+	sta print_x
+	lda #56
+	sta bar_wl
+	sta print_count
+	jsr hiprint
+-	lda isr_done
+	lsr
+	bcc -
+	jsr printtime
+	jsr read_pad
+	lda #$80
+	and pad1trig+1
+	bne +
+	lda #$10
+	and pad1trig+1
+	beq -
+	lda #$04
+	sta @MCU_CMD
+	jmp select_file_fade
++	jsr restore_screen
+	plp
+	rts
+
+scroll_direntry_clean:
+	lda #$01
+	sta direntry_xscroll_state
+	stz direntry_xscroll
+	stz direntry_xscroll_wait
+	jsr scroll_direntry
+	stz direntry_xscroll_state
+	stz direntry_xscroll
+	rts
+
+scroll_direntry:
+	ldy menu_sel
+	lda direntry_xscroll_state
+	bne +
+	lda direntry_fits, y
+	bne scroll_direntry_enter
+;	stz direntry_xscroll_state
+	rts
+scroll_direntry_enter
+	lda #$01
+	sta direntry_xscroll_state
+	stz direntry_xscroll_wait
++	lda direntry_xscroll_wait
+	beq +
+	dec direntry_xscroll_wait
+	rts
+
++	lda direntry_xscroll
+	bne scroll_direntry_scrollfast
+	lda #$28
+	bra +
+scroll_direntry_scrollfast
+	lda #$10
++	sta direntry_xscroll_wait
+	tya
+	clc
+	adc #$09
+	sta cursor_y
+	lda #$02
+	sta cursor_x
+	rep #$20 : .al
+	lda menu_sel
+	asl
+	asl
+	tay
+	lda [dirptr_addr], y
+	sta @dirent_addr
+	iny
+	iny
+	sep #$20 : .as
+	lda [dirptr_addr], y	   ; load fileinfo bank
+	clc
+	adc #$c0                   ; add $C0 for memory map
+	sta @dirent_bank           ; store as current bank
+	iny
+	lda [dirptr_addr], y
+	iny
+	sta @dirent_type
+	ldy menu_sel
+	sty direntry_fits_idx
+	phy
+	jsr print_direntry
+	ply
+	lda direntry_fits, y
+	bne +
+	lda #$ff
+	sta direntry_xscroll_state
+	lda #$28
+	sta direntry_xscroll_wait
++	lda direntry_xscroll_state
+	clc
+	adc direntry_xscroll
+	sta direntry_xscroll
+	bne +
+	lda #$01
+	sta direntry_xscroll_state
++	rts

snes/palette.a65

@@ -1,77 +1,64 @@
-palette
-;8bit palette; 4bit palette0; 2bit palette0
-        .byt  $42, $08, $ff, $7f, $c6, $18, $18, $63
-;2bit palette1
-        .byt  $42, $08, $ff, $43, $c6, $0c, $18, $63
-;2bit palette2
-        .byt  $42, $08, $f0, $43, $c0, $0c, $18, $63
-;2bit palette3
+palette .byt  $1f, $7c, $ff, $7f, $c6, $18, $18, $63
+        .byt  $00, $00, $ff, $43, $c6, $0c, $18, $33
+        .byt  $00, $00, $f0, $43, $c3, $0c, $0c, $33
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $00, $00, $ff, $43, $c6, $0c, $18, $33
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $00, $00, $f0, $43, $c3, $0c, $0c, $33
+        .byt  $40, $08, $60, $0c, $80, $10, $80, $0c
+        .byt  $80, $14, $a0, $14, $05, $21, $30, $42
+        .byt  $0f, $3e, $cd, $3d, $c1, $18, $52, $4a
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $d6, $5a, $6b, $2d, $39, $67, $7a, $6b
+        .byt  $ce, $39, $46, $29, $94, $52, $ad, $35
+        .byt  $a2, $14, $aa, $35, $c0, $18, $18, $63
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $e0, $1c, $a0, $18, $c3, $18, $29, $25
+        .byt  $4a, $29, $ff, $7f, $21, $04, $bd, $73
+        .byt  $fe, $7b, $e7, $18, $42, $08, $00, $00
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $a5, $14, $79, $7b, $e6, $1c, $63, $0c
+        .byt  $de, $7f, $bd, $7f, $08, $21, $8c, $31
+        .byt  $6a, $2d, $08, $25, $61, $29, $00, $21
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $c4, $45, $45, $5a, $a5, $6e, $e6, $7e
+        .byt  $c7, $10, $b4, $66, $82, $35, $27, $35
+        .byt  $8b, $3d, $66, $59, $85, $69, $6f, $76
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $83, $75, $37, $7f, $46, $45, $0a, $7a
+        .byt  $9b, $7f, $d2, $7a, $15, $7f, $c0, $3c
+        .byt  $08, $11, $21, $25, $86, $52, $0e, $25
+        .byt  $d9, $1c, $f1, $1c, $9e, $14, $ef, $1c
+        .byt  $ca, $18, $9d, $14, $36, $29, $d3, $72
+        .byt  $50, $5a, $81, $28, $cd, $49, $6a, $26
+        .byt  $c7, $15, $63, $25, $4f, $23, $ac, $1e
+        .byt  $05, $0d, $0e, $2b, $25, $0d, $c4, $08
+        .byt  $62, $04, $e7, $29, $b2, $18, $6c, $0c
+        .byt  $82, $04, $ce, $19, $31, $1a, $ff, $17
+        .byt  $dd, $1b, $7b, $1f, $4a, $11, $d6, $1a
+        .byt  $29, $73, $4d, $63, $50, $4f, $d3, $26
+        .byt  $b8, $37, $26, $08, $fe, $20, $94, $3f
+        .byt  $a3, $04, $10, $42, $10, $42, $10, $42
         .byt  $10, $42, $10, $42, $10, $42, $10, $42
-;4bit palette1; 2bit palette4
-        .byt  $42, $08, $ff, $43, $c6, $0c, $18, $63
-;2bit palette5
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $1f, $7c, $1f, $7c, $1f, $7c, $1f, $7c
+        .byt  $1f, $74, $00, $00, $08, $21, $8c, $31
+        .byt  $ce, $39, $bd, $77, $7b, $6f, $39, $67
+        .byt  $d6, $5a, $94, $52, $ff, $7f, $10, $42
+        .byt  $4a, $29, $84, $10, $c6, $18, $52, $4a
+        .byt  $1f, $74, $45, $11, $e3, $10, $a1, $0c
+        .byt  $e8, $19, $4f, $27, $0e, $23, $ed, $22
+        .byt  $2e, $23, $09, $1a, $cc, $22, $24, $11
         .byt  $10, $42, $10, $42, $10, $42, $10, $42
-;2bit palette6
-        .byt  $10, $42, $10, $42, $10, $42, $10, $42
-;2bit palette7
-        .byt  $10, $42, $10, $42, $10, $42, $10, $42
-;4bit palette2
-        .byt  $10, $42, $f0, $43, $c0, $0c, $18, $63
-;logo
-        .byt  $00, $00, $00, $00, $20, $04, $20, $00
-        .byt  $20, $00, $21, $00, $21, $08, $40, $08
-        .byt  $40, $04, $42, $04, $42, $0c, $60, $0c
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $62, $0c, $61, $0c, $62, $00, $63, $0c
-        .byt  $63, $10, $62, $08, $80, $10, $64, $0c
-        .byt  $a0, $14, $84, $10, $a2, $0c, $a4, $0c
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $a4, $10, $c0, $18, $a4, $14, $a6, $14
-        .byt  $a5, $14, $89, $14, $e0, $1c, $c5, $10
-        .byt  $c6, $18, $e3, $0c, $e5, $1c, $00, $21
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $04, $0d, $ca, $18, $04, $11, $e7, $1c
-        .byt  $20, $25, $21, $1d, $5d, $0c, $08, $15
-        .byt  $40, $29, $08, $21, $5e, $10, $5d, $10
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $cf, $20, $7b, $10, $7e, $14, $27, $25
-        .byt  $60, $31, $28, $25, $44, $29, $61, $29
-        .byt  $46, $29, $29, $25, $62, $2d, $f3, $1c
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $66, $15, $d6, $18, $63, $31, $d8, $18
-        .byt  $0e, $25, $80, $35, $48, $29, $bb, $18
-        .byt  $4a, $29, $66, $2d, $4b, $29, $a3, $2d
-        .byt  $a0, $39, $f6, $20, $6a, $15, $6a, $19
-        .byt  $32, $21, $a1, $39, $a1, $41, $31, $29
-        .byt  $4e, $31, $a2, $39, $c0, $3d, $6b, $2d
-        .byt  $8a, $31, $6d, $2d, $c8, $19, $00, $42
-        .byt  $8c, $31, $e3, $3d, $ac, $19, $e3, $45
-        .byt  $ad, $15, $e3, $49, $02, $42, $e6, $2d
-        .byt  $20, $42, $ad, $35, $24, $46, $24, $4e
-        .byt  $28, $2e, $42, $46, $ee, $39, $45, $4a
-        .byt  $2a, $16, $48, $2e, $0f, $1e, $46, $56
-        .byt  $64, $4a, $44, $5e, $0f, $3e, $64, $4e
-        .byt  $65, $5a, $83, $4e, $67, $4e, $30, $42
-        .byt  $86, $4e, $32, $46, $6d, $2e, $52, $1a
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $00, $00, $00, $00, $00, $00, $00, $00
-        .byt  $8b, $22, $a5, $56, $51, $46, $ab, $1a
-        .byt  $a5, $6a, $a5, $6e, $c1, $76, $c7, $5a
-        .byt  $93, $16, $e0, $7a, $72, $4a, $cc, $26
-        .byt  $b0, $2a, $93, $4e, $e5, $7e, $e8, $5e
-        .byt  $b5, $1e, $ed, $1e, $e6, $7e, $b5, $16
-        .byt  $95, $52, $b3, $56, $b5, $56, $0a, $63
-        .byt  $2d, $1b, $29, $67, $2f, $23, $f4, $2a
-        .byt  $d6, $5a, $17, $1b, $4a, $6b, $4d, $67
-        .byt  $f7, $5e, $f8, $62, $39, $1f, $18, $63
-        .byt  $6c, $73, $78, $23, $39, $67, $7b, $1b
-        .byt  $5a, $6b, $7b, $6f, $de, $17, $9c, $73
-        .byt  $bd, $77, $ff, $13, $de, $7b, $ff, $7f
-;sprite palette 7
-        .byt  $3f, $7c, $20, $08, $84, $0c, $a5, $14
-        .byt  $08, $21, $5a, $6b, $bc, $73, $fe, $7b
-        .byt  $f7, $5e, $73, $4e, $10, $42, $42, $08
-        .byt  $00, $00, $ad, $35, $b5, $56, $6b, $2d
-
+        .byt  $1f, $74, $df, $17, $47, $15, $c3, $0c
+        .byt  $0e, $12, $7b, $13, $b9, $33, $06, $7f
+        .byt  $2c, $63, $75, $3b, $72, $4f, $93, $16
+        .byt  $aa, $15, $24, $15, $17, $13, $50, $16
+        .byt  $1f, $74, $0e, $21, $54, $29, $a6, $14
+        .byt  $7e, $14, $5a, $2d, $10, $21, $0d, $25
+        .byt  $eb, $20, $9c, $14, $99, $14, $37, $29
+        .byt  $f6, $1c, $96, $14, $d3, $1c, $f1, $1c

snes/reset.a65

@@ -39,6 +39,8 @@ NMI_ROUTINE:
 	php
 	txa
 	dec
+	dec
+	dec
 	plp
 	bne small_bar
 	asl
@@ -82,9 +84,29 @@ math_cont
 	clc
 	adc bar_x	; + X start coord
 	sta $2127	; window 1 right
-	lda #$3e	; ch. 1-5
-	sta @$420c	; trigger HDMA
-	lda #$01
+;	lda #$3e	; ch. 1-5
+;	sta @$420c	; trigger HDMA
+
+	lda cur_bright
+	cmp tgt_bright
+	beq +
+	bpl bright_down
+bright_up
+	inc
+	sta cur_bright
+	lda $2100
+	and #$f0
+	ora cur_bright
+	sta $2100
+	bra +
+bright_down
+	dec
+	sta cur_bright
+	lda $2100
+	and #$f0
+	ora cur_bright
+	sta $2100
++	lda #$01
 	sta isr_done
         rtl
 

snes/spc700.a65

@@ -0,0 +1,61 @@
+; All SPC700 routines in SPC700 machine code
+; SPC loader & transfer routines by Shay Green <gblargg@gmail.com>
+
+loader				; .org $0002
+	.byt $F8,$21		;	mov x,@loader_data
+	.byt $BD		;	mov sp,x
+	.byt $CD,$22		;	mov x,#@loader_data+1
+
+	; Push PC and PSW from SPC header
+	.byt $BF		;	mov a,(x)+
+	.byt $2D		;	push a
+	.byt $BF		;	mov a,(x)+
+	.byt $2D		;	push a
+	.byt $BF		;	mov a,(x)+
+	.byt $2D		;	push a
+
+	; Set FLG to $60 rather than value from SPC
+	.byt $E8,$60		;	mov a,#$60
+	.byt $D4,$6C		;	mov FLG+x,a
+
+	; Restore DSP registers
+	.byt $8D,$00		;	mov y,#0
+	.byt $BF		; next:	mov a,(x)+
+	.byt $CB,$F2		;	mov $F2,y
+	.byt $C4,$F3		;	mov $F3,a
+	.byt $FC		;	inc y
+	.byt $10,-8		;	bpl next
+
+	.byt $8F,$6C,$F2	;	mov $F2,#FLG	; set for later
+
+	; Rerun loader
+	.byt $5F,$C0,$FF	;	jmp $FFC0
+
+;---------------------------------------
+
+transfer			; .org $0002
+
+	.byt $CD,$FE		; mov x,#$FE		; transfer 254 pages
+
+	; Transfer four-byte chunks
+	.byt $8D,$3F		; page: mov y,#$3F
+	.byt $E4,$F4		; quad: mov a,$F4
+	.byt $D6,$00,$02	; mov0: mov !$0200+y,a
+	.byt $E4,$F5		;	mov a,$F5
+	.byt $D6,$40,$02	; mov1: mov !$0240+y,a
+	.byt $E4,$F6		;	mov a,$F6
+	.byt $D6,$80,$02	; mov2: mov !$0280+y,a
+	.byt $E4,$F7		;	mov a,$F7	; tell S-CPU we're ready for more
+	.byt $CB,$F7		;	mov $F7,Y
+	.byt $D6,$C0,$02	; mov3: mov !$02C0+y,a
+	.byt $DC 		;	dec y
+	.byt $10,-25		;	bpl quad
+	; Increment MSBs of addresses
+	.byt $AB,$0A		;	inc mov0+2
+	.byt $AB,$0F		;	inc mov1+2
+	.byt $AB,$14		;	inc mov2+2
+	.byt $AB,$1B		;	inc mov3+2
+	.byt $1D    		;	dec x
+	.byt $D0,-38		;	bne page
+	; Rerun loader
+	.byt $5F,$C0,$FF	;	jmp $FFC0

snes/spcplay.a65

@@ -0,0 +1,656 @@
+#include "memmap.i65"
+
+; SPC Player
+; SPC700 transfer and IO routines by Shay Green <gblargg@gmail.com>
+
+spcplayer:
+	php
+	sep #$30 : .as : .xs
+
+	ldx #$0a	; Check if SPC header is present
+-
+	lda @SPC_HEADER,x
+	cmp @text_spcid,x
+	beq +
+	jmp spc_exit
++
+	dey
+	bne -
+
+	rep #$10 : .xl	; Now draw lots of stuff
+
+	stz bar_wl
+	dec bar_wl
+	stz bar_xl
+	dec bar_xl
+	stz bar_yl
+	dec bar_yl
+	jsr backup_screen
+
+	lda #^text_spcplay	; Loading window
+	sta window_tbank
+	ldx #!text_spcplay
+	stx window_taddr
+	lda @spcplay_win_x
+	sta window_x
+	lda @spcplay_win_y
+	sta window_y
+	lda @spcplay_win_w
+	sta window_w
+	lda @spcplay_win_h
+	sta window_h
+	jsr draw_window
+
+	lda #^text_spcload	; Loading text
+	ldx #!text_spcload
+	sta print_bank
+	stx print_src
+	stz print_pal
+	lda #29
+	sta print_count
+	lda #17
+	sta print_y
+	lda #17
+	sta print_x
+	jsr hiprint
+
+	stz isr_done
+-
+	lda isr_done		; Wait until text is being printed...
+	beq -
+
+	jsr spc700_load		; Load SPC into SPC700
+
+	lda #^text_spcplay
+	sta window_tbank
+	ldx #!text_spcplay
+	stx window_taddr
+	lda @spcstart_win_x
+	sta window_x
+	lda @spcstart_win_y
+	sta window_y
+	lda @spcstart_win_w
+	sta window_w
+	lda @spcstart_win_h
+	sta window_h
+	jsr draw_window
+
+	lda #^text_spcstarta
+	ldx #!text_spcstarta
+	sta print_bank
+	stx print_src
+	lda #$01
+	sta print_pal
+	lda #30
+	sta print_count
+	lda #15
+	sta print_y
+	lda #17
+	sta print_x
+	jsr hiprint
+
+	lda #^text_spcstartb
+	ldx #!text_spcstartb
+	sta print_bank
+	stx print_src
+	lda #$01
+	sta print_pal
+	lda #07
+	sta print_count
+	lda #17
+	sta print_y
+	lda #12
+	sta print_x
+	jsr hiprint
+
+	lda #$fe
+	ldx #$004e
+	sta print_bank
+	stx print_src
+	stz print_pal
+	lda #32
+	sta print_count
+	lda #17
+	sta print_y
+	lda #20
+	sta print_x
+	jsr hiprint
+
+	lda #^text_spcstartc
+	ldx #!text_spcstartc
+	sta print_bank
+	stx print_src
+	lda #$01
+	sta print_pal
+	lda #07
+	sta print_count
+	lda #18
+	sta print_y
+	lda #12
+	sta print_x
+	jsr hiprint
+
+	lda #$fe
+	ldx #$002e
+	sta print_bank
+	stx print_src
+	stz print_pal
+	lda #32
+	sta print_count
+	lda #18
+	sta print_y
+	lda #20
+	sta print_x
+	jsr hiprint
+
+	lda #^text_spcstartd
+	ldx #!text_spcstartd
+	sta print_bank
+	stx print_src
+	lda #$01
+	sta print_pal
+	lda #07
+	sta print_count
+	lda #19
+	sta print_y
+	lda #12
+	sta print_x
+	jsr hiprint
+
+	lda #$fe
+	ldx #$00b0
+        sta longptr+2
+	sta print_bank
+        stx longptr
+        ldy #$00
+        lda [longptr], y
+        cmp #$41
+        bpl +
+        inx
++	stx print_src
+	stz print_pal
+	lda #32
+	sta print_count
+	lda #19
+	sta print_y
+	lda #20
+	sta print_x
+	jsr hiprint
+
+spc_playloop:
+	lda isr_done	; SPC player loop
+	lsr
+	bcc spc_playloop
+	jsr printtime
+	stz isr_done
+
+	jsr read_pad
+	lda #$80
+	and pad1trig+1
+	bne spc_key_b
+	bra spc_playloop
+
+spc_key_b:
+	rep #$20 : .al
+	tsc
+	sta saved_sp	; Save SP for later re-entry
+	lda #$fa50	; Write reset signature
+	sta @warm_signature
+	sep #$20 : .as
+
+	sei		; Blank screen & issue CMD_RESET command to Microcontroller...
+	stz $2100	; ...this is required, because there is no other way to stop S-SMP & S-DSP
+	lda #CMD_RESET
+	sta @MCU_CMD
+-
+	bra -		; At this point, the SNES waits for an external reset from the Microcontroller
+
+spc_exit:		; Return from player in case of wrong SPC file data
+	plp
+	rts
+
+;---------------------------------------
+spc700_load:
+	php
+	sep #$20 : .as
+	rep #$10 : .xl
+
+	sei			; Disable NMI & IRQ
+	stz $4200		; The SPC player code is really timing sensitive ;)
+	jsr upload_dsp_regs	; Upload S-DSP registers
+	jsr upload_high_ram	; Upload 63.5K of SPC700 ram
+	jsr upload_low_ram	; Upload rest of ram
+	jsr restore_final	; Restore SPC700 state & start execution
+
+	lda #$81		; VBlank NMI + Auto Joypad Read
+	sta $4200		; enable V-BLANK NMI
+	cli
+	plp
+	rts
+;---------------------------------------
+; Uploads DSP registers and some other setup code
+upload_dsp_regs:
+
+; ---- Begin upload
+
+	ldy #$0002
+	jsr spc_begin_upload
+
+; ---- Upload loader
+
+	ldx #$0000
+-
+	lda @loader,x
+	jsr spc_upload_byte
+	inx
+	cpy #31		; size of loader
+	bne -
+
+; ---- Upload SP, PC & PSW
+
+	lda @SPC_HEADER+43
+	jsr spc_upload_byte
+	lda @SPC_HEADER+38
+	jsr spc_upload_byte
+	lda @SPC_HEADER+37
+	jsr spc_upload_byte
+	lda @SPC_HEADER+42
+	jsr spc_upload_byte
+
+; ---- Upload DSP registers
+
+	ldx #$0000
+-
+	lda @SPC_DSP_REGS,x
+	jsr spc_upload_byte
+	inx
+	cpx #128
+	bne -
+
+; --- Upload fixed values for $F1-$F3
+
+	ldy #$00F1
+	jsr spc_next_upload
+
+	lda #$80        ; stop timers
+	jsr spc_upload_byte
+	lda #$6c        ; get dspaddr set for later
+	jsr spc_upload_byte
+	lda #$60
+	jsr spc_upload_byte
+
+; ---- Upload $f8-$1ff
+
+	ldy #$00F8
+	jsr spc_next_upload
+
+	ldx #$00F8
+-
+	lda @SPC_DATA,x
+	jsr spc_upload_byte
+	inx
+	cpx #$200
+	bne -
+
+; ---- Execute loader
+
+	ldy #$0002
+	jsr spc_execute
+	rts
+;---------------------------------------
+upload_high_ram:
+
+	ldy #$0002
+	jsr spc_begin_upload
+
+; ---- Upload transfer routine
+
+	ldx #$0000
+-
+	lda @transfer,x
+	jsr spc_upload_byte
+	inx
+	cpy #43		; size of transfer routine
+	bne -
+
+	ldx #$023f	; prepare transfer address
+
+; ---- Execute transfer routine
+
+	ldy #$0002
+	sty APUIO2
+	stz APUIO1
+	lda APUIO0
+	inc
+	inc
+	sta APUIO0
+; Wait for acknowledgement
+-
+	cmp APUIO0
+	bne -
+
+; ---- Burst transfer of 63.5K using custom routine
+
+outer_transfer_loop:
+	ldy #$003f		; 3
+inner_transfer_loop:
+	lda @SPC_DATA,x		; 5 |
+	sta APUIO0		; 4 |
+	lda @SPC_DATA+$40,x	; 5 |
+	sta APUIO1		; 4 |
+	lda @SPC_DATA+$80,x	; 5 |
+	sta APUIO2		; 4 |
+	lda @SPC_DATA+$C0,x	; 5 |
+	sta APUIO3		; 4 |
+	tya			; 2 >> 38 cycles
+-
+	cmp APUIO3		; 4 |
+	bne -			; 3 |
+	dex			; 2 |
+	dey			; 2 |
+	bpl inner_transfer_loop	; 3 >> 14 cycles
+
+	rep #$21 : .al		; 3 |
+	txa			; 2 |
+	adc #$140		; 3 |
+	tax			; 2 |
+	sep #$20 : .as		; 3 |
+	cpx #$003f		; 3 |
+	bne outer_transfer_loop	; 3 >> 19 cycles
+
+	rts
+
+;---------------------------------------
+upload_low_ram:
+
+; ---- Upload $0002-$00EF using IPL
+
+	ldy #$0002
+	jsr spc_begin_upload
+
+	ldx #$0002
+-
+	lda @SPC_DATA,x
+	jsr spc_upload_byte
+	inx
+	cpx #$00F0
+	bne -
+	rts
+;---------------------------------------
+; Executes final restoration code
+restore_final:
+	jsr start_exec_io ; prepare execution from I/O registers
+
+	stz $420d	; SPC700 I/O code requires SLOW timing
+
+; ---- Restore first two bytes of RAM
+
+	lda @SPC_DATA
+	xba
+	lda #$e8	; MOV A,#@SPC_DATA
+	tax
+	jsr exec_instr
+	ldx #$00C4	; MOV $00,A
+	jsr exec_instr
+
+	lda @SPC_DATA+1
+	xba
+	lda #$e8	; MOV A,#@SPC_DATA+1
+	tax
+	jsr exec_instr
+	ldx #$01C4	; MOV $01,A
+	jsr exec_instr
+
+; ---- Restore SP
+
+	lda @SPC_HEADER+43
+	sec
+	sbc #3
+	xba
+	lda #$cd	; MOV X,#@SPC_HEADER+43
+	tax
+	jsr exec_instr
+	ldx #$bd	; MOV SP,X
+	jsr exec_instr
+
+; ---- Restore X
+
+	lda @SPC_HEADER+40
+	xba
+	lda #$cd	; MOV X,#@SPC_HEADER+40
+	tax
+	jsr exec_instr
+
+; ---- Restore Y
+
+	lda @SPC_HEADER+41
+	xba
+	lda #$8d	; MOV Y,#@SPC_HEADER+41
+	tax
+	jsr exec_instr
+
+; ---- Restore DSP FLG register
+
+	lda @SPC_DSP_REGS+$6c
+	xba
+	lda #$e8	; MOV A,#@SPC_DSP_REGS+$6c
+	tax
+	jsr exec_instr
+	ldx #$f3C4	; MOV $f3,A -> $f2 has been set-up before by SPC700 loader
+	jsr exec_instr
+
+; ---- Restore DSP KON register
+
+	lda #$4C
+	xba
+	lda #$e8	; MOV A,#$4c
+	tax
+	jsr exec_instr
+	ldx #$f2C4	; MOV $f2,A
+	jsr exec_instr
+	lda @SPC_DSP_REGS+$4C
+	xba
+	lda #$e8	; MOV A,#@SPC_DSP_REGS+$4c
+	tax
+	jsr exec_instr
+	ldx #$f3C4	; MOV $f3,A
+	jsr exec_instr
+
+; ---- Restore DSP register address
+
+ 	lda @SPC_DATA+$F2
+	xba
+	lda #$e8	; MOV A,#@SPC_DATA+$F2
+	tax
+	jsr exec_instr
+	ldx #$f2C4	; MOV dest,A
+	jsr exec_instr
+
+; ---- Restore CONTROL register
+
+	lda @SPC_DATA+$F1
+	and #$CF	; don't clear input ports
+	xba
+	lda #$e8	; MOV A,#@SPC_DATA+$F1
+	tax
+	jsr exec_instr
+	ldx #$f1C4  	; MOV $F1,A
+	jsr exec_instr
+
+;---- Restore A
+
+	lda @SPC_HEADER+39
+	xba
+	lda #$e8	; MOV A,#@SPC_HEADER+39
+	tax
+	jsr exec_instr
+
+;---- Restore PSW and PC
+
+	ldx #$7F00	; NOP; RTI
+	stx APUIO0
+	lda #$FC	; Patch loop to execute instruction just written
+	sta APUIO3
+
+;---- restore IO ports $f4 - $f7
+
+	rep #$20 : .al
+	lda @SPC_DATA+$F4
+	tax
+	lda @SPC_DATA+$F6
+	sta APUIO2
+	stx APUIO0	; last to avoid overwriting RETI before run
+	sep #$20 : .as
+
+	lda #$01
+	sta $420d	; restore FAST CPU operation
+	rts
+;---------------------------------------
+spc_begin_upload:
+
+	sty APUIO2	; Set address
+
+	ldy #$BBAA	; Wait for SPC
+-
+	cpy APUIO0
+	bne -
+
+	lda #$CC	; Send acknowledgement
+	sta APUIO1
+	sta APUIO0
+
+-       		; Wait for acknowledgement
+	cmp APUIO0
+	bne -
+
+	ldy #0		; Initialize index
+	rts
+;---------------------------------------
+spc_upload_byte:
+	sta APUIO1
+
+	tya		; Signal it's ready
+	sta APUIO0
+-     			; Wait for acknowledgement
+	cmp APUIO0
+	bne -
+
+	iny
+
+	rts
+;---------------------------------------
+spc_next_upload:
+	sty APUIO2
+
+; Send command
+; Special case operation has been fully tested.
+	lda APUIO0
+	inc
+	inc
+	bne +
+	inc
++
+	sta APUIO1
+	sta APUIO0
+
+; Wait for acknowledgement
+-
+	cmp APUIO0
+	bne -
+
+	ldy #0
+	rts
+;---------------------------------------
+spc_execute:
+	sty APUIO2
+
+	stz APUIO1
+
+	lda APUIO0
+	inc
+	inc
+	sta APUIO0
+
+; Wait for acknowledgement
+-
+	cmp APUIO0
+	bne -
+
+	rts
+;---------------------------------------
+start_exec_io:
+; Set execution address
+	ldx #$00F5
+	stx APUIO2
+
+	stz APUIO1      ; NOP
+	ldx #$FE2F      ; BRA *-2
+
+; Signal to SPC that we're ready
+	lda APUIO0
+	inc
+	inc
+	sta APUIO0
+
+; Wait for acknowledgement
+-
+	cmp APUIO0
+	bne -
+
+; Quickly write branch
+	stx APUIO2
+
+	rts
+;---------------------------------------
+exec_instr:
+; Replace instruction
+	stx APUIO0
+	lda #$FC
+	sta APUIO3      ; 30
+
+        ; SPC BRA loop takes 4 cycles, so it reads
+        ; the branch offset every 4 SPC cycles (84 master).
+        ; We must handle the case where it read just before
+        ; the write above, and when it reads just after it.
+        ; If it reads just after, we have at least 7 SPC
+        ; cycles (147 master) to change restore the branch
+        ; offset.
+
+        ; 48 minimum, 90 maximum
+        ora #0
+        ora #0
+        ora #0
+        nop
+        nop
+        nop
+
+        ; 66 delay, about the middle of the above limits
+	phd ;4
+	pld ;5
+
+        ; Give plenty of extra time if single execution
+        ; isn't needed, as this avoids such tight timing
+        ; requirements.
+
+;	phd ;4
+;	pld ;5
+;	phd ;4
+;	pld ;5
+
+        ; Patch loop to skip first two bytes
+	lda #$FE        ; 16
+	sta APUIO3      ; 30
+
+        ; 38 minimum (assuming 66 delay above)
+	phd ; 4
+	pld ; 5
+
+        ; Give plenty of extra time if single execution
+        ; isn't needed, as this avoids such tight timing
+        ; requirements.
+
+	phd
+	pld
+	phd
+	pld
+	rts

snes/sysinfo.a65

@@ -0,0 +1,134 @@
+#include "memmap.i65"
+
+; sysinfo.a65: display sysinfo text block
+.byt "===SHOW_SYSINFO==="
+show_sysinfo:
+	php
+	sep #$20 : .as
+	rep #$10 : .xl
+	stz bar_wl
+	dec bar_wl
+	stz bar_xl
+	dec bar_xl
+	stz bar_yl
+	dec bar_yl
+	jsr backup_screen
+	lda #^text_mm_sysinfo
+	sta window_tbank
+	ldx #!text_mm_sysinfo
+	stx window_taddr
+	lda @sysinfo_win_x
+	sta window_x
+	inc
+	inc
+	pha
+	stz print_x+1
+	lda @sysinfo_win_y
+	sta window_y
+	inc
+	inc
+	pha
+	stz print_y+1
+	lda @sysinfo_win_w
+	sta window_w
+	lda @sysinfo_win_h
+	sta window_h
+	jsr draw_window
+	stz print_pal
+	
+	ldx #38
+copy_snes_system_text:
+	lda @text_system,x
+	sta @snes_system_config,x
+	dex
+	bpl copy_snes_system_text
+	
+sysinfo_printloop:
+	sep #$20 : .as
+	rep #$10 : .xl
+	lda #CMD_SYSINFO
+	sta @MCU_CMD
+	lda #^SYSINFO_BLK
+	ldx #!SYSINFO_BLK
+	sta print_bank
+	stx print_src
+	stz print_pal
+	pla
+	sta print_y
+	pla
+	sta print_x
+	lda #40
+	sta print_count
+	lda #12
+-	pha
+	jsr hiprint
+	inc print_y
+	rep #$20 : .al
+	lda print_src
+	clc
+	adc #40
+	sta print_src
+	sep #$20 : .as
+	pla
+	dec
+	bne -
+	
+	ldx #24
+	lda $213e
+	and #$0f
+	clc
+	adc #$30
+	sta @snes_system_config,x
+	
+	ldx #38
+	lda $213f
+	and #$0f
+	clc
+	adc #$30
+	sta @snes_system_config,x
+	
+	ldx #10
+	lda $4210
+	and #$0f
+	clc
+	adc #$30
+	sta @snes_system_config,x		
+	
+	lda #^snes_system_config		; System text
+	ldx #!snes_system_config
+	sta print_bank
+	stx print_src
+	stz print_pal
+	lda #39
+	sta print_count
+	lda #23
+	sta print_y
+	lda #12
+	sta print_x
+	jsr hiprint		
+	
+-	lda isr_done
+	lsr
+	bcc -
+	jsr printtime
+	jsr read_pad
+	lda #$80
+	and pad1trig
+	bne +
+	lda #$80
+	and pad1trig+1
+	bne +
+	lda @sysinfo_win_x
+	inc
+	inc
+	pha
+	lda @sysinfo_win_y
+	inc
+	inc
+	pha
+	jmp sysinfo_printloop
++	plp
+	jsr restore_screen
+	lda #$00
+	sta @MCU_CMD
+	rtl

snes/text.a65

@@ -1,143 +1,95 @@
 .text
 #include "memmap.i65"
 .byt "===HIPRINT==="
+; input:
+; print_count
+; print_x
+; print_y
+; print_src
+; print_bank
+; print_pal
+;
+; output:
+; print_done (# of chars printed)
+; print_over (char after print_count)
+
 hiprint:
+	php
 	sep #$20 : .as
-	lda print_count
-	sta print_count_tmp
-	rep #$30 : .xl : .al
-	stz print_done
-	lda print_x
-	and #$00ff
-	lsr
-	bcs print_bg1
-	ldx #!BG1_TILE_BUF ; for 2nd loop
-	phx
-	ldx #!BG2_TILE_BUF ; for 1st loop
-	phx
-	bra print_bg_cont
-print_bg1
-	ldx #!BG2_TILE_BUF+2 ; for 2nd loop
-	phx
-	ldx #!BG1_TILE_BUF ; for 1st loop da whoop
-	phx
-	bra print_bg_cont
-print_bg_cont
-	sta !print_temp
-	lda !print_y
-	and #$00ff
-	asl
-	asl
-	asl
-	asl
-	asl
-	clc
-	adc !print_temp
-	asl ; double the offset for WRAM addressing
-	tay	; zonday
-	plx
-	phy	; offset from tilemap start
-	stx !print_temp
-	clc
-	adc !print_temp
-; we need to transfer to WRAM and from there to VRAM via DMA during VBLANK
-; because VRAM can only be accessed during VBLANK and forced blanking.
-	sta $2181
-	sep #$20 : .as
-	lda #$7f ;we really only need bit 0. full bank given for clarity
-	sta $2183
-print_loop
-	ldx !print_src
-	lda !print_bank
-	pha
-	plb
-	phx	; source addr
-print_loop_inner
-	lda !0,x
-	bne +
-	jmp print_end2
-+	asl
-	sta @$2180
-	lda @print_pal
-	asl
-	asl
-	adc #$00
-	ora #$20
-	sta @$2180
-	lda @print_done
-	inc
-	sta @print_done
-	inx
-	lda !0,x
-	beq print_loop2
-	inx
-	lda !0,x
-	beq print_loop2
-	lda @print_count_tmp
-	dec
-	dec
-	sta @print_count_tmp
-	beq print_loop2
-	bmi print_loop2
-	bra print_loop_inner
-print_loop2
-	lda @print_count
-	dec
-	sta @print_count_tmp
-	beq print_end2
-	lda #$00
+	rep #$10 : .xl
+	ldx print_src
+	stx print_ptr
+	lda print_bank
+	sta print_ptr+2
+	phb
+	lda #$7e
 	pha
 	plb
 	rep #$30 : .al : .xl
-	ply	; source addr
-	iny
-	pla	; offset from tilemap start
-	plx	; other tilemap addr
-	stx !print_temp
+	lda print_pal
+	and #$00ff
+	xba
+	asl
+	asl
+	ora #$2000
+	sta print_temp
+	lda print_count
+	and #$00ff
+	beq hiprint_end
+	tay
+	lda print_x
+	and #$00ff
+	sta print_x
+	lda print_y
+	and #$00ff
+	asl
+	asl
+	asl
+	asl
+	asl
+	asl
 	clc
-	adc !print_temp ; tilemap+offset
-	sta $2181
-	tyx
+	adc print_x
+	and #$fffe
+	tax
+	lda print_x
+	lsr
+	bcs hiprint_bg1
+hiprint_bg2
+	lda [print_ptr]
+	and #$00ff
+	beq hiprint_end
+	inc print_ptr
+	asl
+	ora print_temp
+	sta !BG2_TILE_BUF, x
+	dey
+	beq hiprint_end
+hiprint_bg1
+	lda [print_ptr]
+	and #$00ff
+	beq hiprint_end
+	inc print_ptr
+	asl
+	ora print_temp
+	sta !BG1_TILE_BUF, x
+	inx
+	inx
+	dey
+	beq hiprint_end
+	bra hiprint_bg2
+hiprint_end
+	plb
 	sep #$20 : .as
-	lda print_bank
-	pha
-	plb
-print_loop2_inner
-	lda !0,x
-	bne +
-	jmp print_end
-+	asl
-	sta @$2180
-	lda @print_pal
-	asl
-	asl
-	adc #$00
-	ora #$20
-	sta @$2180
-	lda @print_done
+	lda [print_ptr]
+	sta print_over
+	tya
+	sec
+	sbc print_count
+	eor #$ff
 	inc
-	sta @print_done
-	inx
-	lda !0,x
-	beq print_end
-	inx
-	lda !0,x
-	beq print_end
-	lda @print_count_tmp
-	dec
-	dec
-	sta @print_count_tmp
-	beq print_end
-	bmi print_end
-	bra print_loop2_inner
-print_end2 ; clean up the stack (6 bytes)
-	ply
-	ply
-	ply
-print_end
-	lda #$00
-	pha
-	plb
+	sta print_done
+	plp
 	rts
 
 
@@ -287,6 +239,7 @@ draw_window:
 	sta print_count
 	jsr hiprint
 	lda print_done
+	clc
 	adc print_x
 	sta print_x
 	lda #^window_tr

snes/time.a65

@@ -86,7 +86,7 @@ time_update
 	lda #$00
 	xba
 	tax
-	lda !timebox_data, x
+	lda @timebox_data, x
 	clc
 	adc #$04
 	adc @time_win_x
@@ -95,10 +95,10 @@ time_update
 	adc #$02
 	sta bar_yl
 	inx
-	lda !timebox_data, x
+	lda @timebox_data, x
 	sta bar_wl
 	inx
-	lda !timebox_data, x
+	lda @timebox_data, x
 	sta time_ptr
 timeloop1
 	lda isr_done
@@ -263,12 +263,12 @@ time_inc_day
 	lda #$00
 	xba
 	tax
-	lda !time_month, x
+	lda @time_month, x
 	cmp time_d10
 	bne time_inc_day_normal
 	inx
 	jsr is_leapyear_feb
-	lda !time_month, x
+	lda @time_month, x
 	dec
 	adc #$00
 	cmp time_d1
@@ -309,13 +309,13 @@ time_adjust_mon
 	xba
 	tax
 	lda time_d10
-	cmp !time_month, x
+	cmp @time_month, x
 	bcs time_mon_adjust
 	rts
 time_mon_adjust
 	php
 	inx
-	lda !time_month, x
+	lda @time_month, x
 	pha
 	jsr is_leapyear_feb	; c=1 -> a leapyear february
 	pla
@@ -327,7 +327,7 @@ time_mon_adjust
 time_mon_doadjust
 	sta time_d1
 	dex
-	lda !time_month, x
+	lda @time_month, x
 	sta time_d10
 +
 	rts
@@ -446,10 +446,10 @@ time_dec_cont
 	asl
 	ldx #$0000
 	tax
-	lda !time_month, x
+	lda @time_month, x
 	sta time_d10
 	inx
-	lda !time_month, x
+	lda @time_month, x
 	pha
 	jsr is_leapyear_feb
 	pla
@@ -499,6 +499,8 @@ time_dec_y1_normal
 	rts
 
 gettime
+	php
+	sep #$20 : .as
 	lda #$0d
 	sta $2801
 	lda $2800
@@ -526,6 +528,7 @@ gettime
 	sta time_y10
 	lda $2800
 	sta time_y100
+	plp
 	rts
 
 rendertime
@@ -677,31 +680,31 @@ is_leapyear_400th
 
 settime
 	lda time_y100
-	sta @AVR_PARAM
+	sta @MCU_PARAM
 	lda time_y10
-	sta @AVR_PARAM+1
+	sta @MCU_PARAM+1
 	lda time_y1
-	sta @AVR_PARAM+2
+	sta @MCU_PARAM+2
 	lda time_mon
-	sta @AVR_PARAM+3
+	sta @MCU_PARAM+3
 	lda time_d10
-	sta @AVR_PARAM+4
+	sta @MCU_PARAM+4
 	lda time_d1
-	sta @AVR_PARAM+5
+	sta @MCU_PARAM+5
 	lda time_h10
-	sta @AVR_PARAM+6
+	sta @MCU_PARAM+6
 	lda time_h1
-	sta @AVR_PARAM+7
+	sta @MCU_PARAM+7
 	lda time_m10
-	sta @AVR_PARAM+8
+	sta @MCU_PARAM+8
 	lda time_m1
-	sta @AVR_PARAM+9
+	sta @MCU_PARAM+9
 	lda time_s10
-	sta @AVR_PARAM+10
+	sta @MCU_PARAM+10
 	lda time_s1
-	sta @AVR_PARAM+11
+	sta @MCU_PARAM+11
 	lda #$02 ; set clock
-	sta @AVR_CMD
+	sta @MCU_CMD
 	rts
 
 printtime:
@@ -710,8 +713,6 @@ printtime:
         lda listdisp
         clc
         adc #$0a
-        clc
-        adc vidmode
         sta print_y
         lda #$2b
         sta print_x

src/Makefile

@@ -55,7 +55,7 @@ TARGET = $(OBJDIR)/sd2snes
 
 
 # List C source files here. (C dependencies are automatically generated.)
-SRC = main.c ff.c ccsbcs.c clock.c uart.c power.c led.c timer.c printf.c spi.c fileops.c rtc.c fpga.c fpga_spi.c snes.c smc.c memory.c filetypes.c faulthandler.c sort.c crc32.c cic.c cli.c xmodem.c irq.c rle.c sdnative.c msu1.c crc16.c sysinfo.c
+SRC = main.c ff.c ccsbcs.c clock.c uart.c power.c led.c timer.c printf.c spi.c fileops.c rtc.c fpga.c fpga_spi.c snes.c smc.c memory.c filetypes.c faulthandler.c sort.c crc32.c cic.c cli.c xmodem.c irq.c rle.c sdnative.c msu1.c crc16.c sysinfo.c cfg.c
 
 # usbcontrol.c usb_hid.c usbhw_lpc.c usbinit.c usbstdreq.c
 

src/README

@@ -25,6 +25,7 @@ b) Cortex M3 toolchain
     - libexpat-dev
     - make
     - gcc
+   Package names may differ for your distribution.
    Newer gccs complain when compiling binutils, so you may have to add
    '--disable-werror' to the compiler options for binutils in the Makefile.
    The Makefile will install immediately so make sure you can write to the

src/bootldr/config.h

@@ -1,7 +1,7 @@
 #ifndef _CONFIG_H
 #define _CONFIG_H
 
-//#define DEBUG_BL
+// #define DEBUG_BL
 // #define DEBUG_SD
 // #define DEBUG_IRQ
 
@@ -56,6 +56,7 @@
 #define CONFIG_UART_PCLKDIV       1
 #define CONFIG_UART_TX_BUF_SHIFT  8
 #define CONFIG_UART_BAUDRATE      921600
+//#define CONFIG_UART_BAUDRATE      115200
 #define CONFIG_UART_DEADLOCKABLE
 
 #define SSP_CLK_DIVISOR_FAST 2

src/bootldr/main.c

@@ -23,7 +23,7 @@ int i;
 volatile enum diskstates disk_state;
 extern volatile tick_t ticks;
 
-int (*chain)(void) = (void*)(FW_START+0x000001c5);
+int (*chain)(void);
 
 int main(void) {
   SNES_CIC_PAIR_REG->FIODIR = BV(SNES_CIC_PAIR_BIT);
@@ -86,6 +86,16 @@ DBG_BL printf("PCONP=%lx\n", LPC_SC->PCONP);
   NVIC_DisableIRQ(UART_IRQ);
 
   SCB->VTOR=FW_START+0x00000100;
+  chain = (void*)(*((uint32_t*)(FW_START+0x00000104)));
+  uart_putc("0123456789abcdef"[((uint32_t)chain>>28)&15]);
+  uart_putc("0123456789abcdef"[((uint32_t)chain>>24)&15]);
+  uart_putc("0123456789abcdef"[((uint32_t)chain>>20)&15]);
+  uart_putc("0123456789abcdef"[((uint32_t)chain>>16)&15]);
+  uart_putc("0123456789abcdef"[((uint32_t)chain>>12)&15]);
+  uart_putc("0123456789abcdef"[((uint32_t)chain>>8)&15]);
+  uart_putc("0123456789abcdef"[((uint32_t)chain>>4)&15]);
+  uart_putc("0123456789abcdef"[((uint32_t)chain)&15]);
+  uart_putc('\n');
   chain();
   while(1);
 }

src/bootldr/uart.c

@@ -119,7 +119,7 @@ void uart_init(void) {
 
   /* set baud rate - no fractional stuff for now */
   UART_REGS->LCR = BV(7) | 3; // always 8n1
-  div = 0x850004; // baud2divisor(CONFIG_UART_BAUDRATE);
+  div = 0xF80022; //0x850004; // baud2divisor(CONFIG_UART_BAUDRATE);
 
   UART_REGS->DLL = div & 0xff;
   UART_REGS->DLM = (div >> 8) & 0xff;

src/cfg.c

@@ -0,0 +1,59 @@
+#include "cfg.h"
+#include "config.h"
+#include "uart.h"
+#include "fileops.h"
+
+cfg_t CFG = {
+  .cfg_ver_maj = 1,
+  .cfg_ver_min = 0,
+  .last_game_valid = 0,
+  .vidmode_menu = VIDMODE_AUTO,
+  .vidmode_game = VIDMODE_AUTO,
+  .pair_mode_allowed = 0,
+  .bsx_use_systime = 0,
+  .bsx_time = 0x0619970301180530LL
+};
+
+int cfg_save() {
+  int err = 0;
+  file_open(CFG_FILE, FA_CREATE_ALWAYS | FA_WRITE);
+  if(file_writeblock(&CFG, 0, sizeof(CFG)) < sizeof(CFG)) {
+    err = file_res;
+  }
+  file_close();
+  return err;
+}
+
+int cfg_load() {
+  int err = 0;
+  file_open(CFG_FILE, FA_READ);
+  if(file_readblock(&CFG, 0, sizeof(CFG)) < sizeof(CFG)) {
+    err = file_res;
+  }
+  file_close();
+  return err;
+}
+
+int cfg_save_last_game(uint8_t *fn) {
+  int err = 0;
+  file_open(LAST_FILE, FA_CREATE_ALWAYS | FA_WRITE);
+  err = f_puts((const TCHAR*)fn, &file_handle);
+  file_close();
+  return err;
+}
+
+int cfg_get_last_game(uint8_t *fn) {
+  int err = 0;
+  file_open(LAST_FILE, FA_READ);
+  f_gets((TCHAR*)fn, 255, &file_handle);
+  file_close();
+  return err;
+}
+
+void cfg_set_last_game_valid(uint8_t valid) {
+  CFG.last_game_valid = valid;
+}
+
+uint8_t cfg_is_last_game_valid() {
+  return CFG.last_game_valid;
+}

src/cfg.h

@@ -0,0 +1,39 @@
+#ifndef _CFG_H
+#define _CFG_H
+
+#include <stdint.h>
+
+#define CFG_FILE ((const uint8_t*)"/sd2snes/sd2snes.cfg")
+#define LAST_FILE ((const uint8_t*)"/sd2snes/lastgame.cfg")
+
+typedef enum {
+  VIDMODE_AUTO = 0,
+  VIDMODE_60,
+  VIDMODE_50
+} cfg_vidmode_t;
+
+typedef struct _cfg_block {
+  uint8_t cfg_ver_maj;
+  uint8_t cfg_ver_min;
+  uint8_t last_game_valid;
+  uint8_t vidmode_menu;
+  uint8_t vidmode_game;
+  uint8_t pair_mode_allowed;
+  uint8_t bsx_use_systime;
+  uint64_t bsx_time;
+} cfg_t;
+
+int cfg_save(void);
+int cfg_load(void);
+
+int cfg_save_last_game(uint8_t *fn);
+int cfg_get_last_game(uint8_t *fn);
+
+cfg_vidmode_t cfg_get_vidmode_menu(void);
+cfg_vidmode_t cfg_get_vidmode_game(void);
+
+void cfg_set_last_game_valid(uint8_t);
+uint8_t cfg_is_last_game_valid(void);
+uint8_t cfg_is_pair_mode_allowed(void);
+
+#endif

src/cli.c

@@ -58,8 +58,8 @@ static char *curchar;
 
 /* Word lists */
 static char command_words[] =
-  "cd\0reset\0sreset\0dir\0ls\0test\0resume\0loadrom\0loadraw\0saveraw\0put\0rm\0d4\0vmode\0mapper\0settime\0time\0setfeature\0hexdump\0w8\0w16\0";
-enum { CMD_CD = 0, CMD_RESET, CMD_SRESET, CMD_DIR, CMD_LS, CMD_TEST, CMD_RESUME, CMD_LOADROM, CMD_LOADRAW, CMD_SAVERAW, CMD_PUT, CMD_RM, CMD_D4, CMD_VMODE, CMD_MAPPER, CMD_SETTIME, CMD_TIME, CMD_SETFEATURE, CMD_HEXDUMP, CMD_W8, CMD_W16 };
+  "cd\0reset\0sreset\0dir\0ls\0test\0resume\0loadrom\0loadraw\0saveraw\0put\0rm\0mkdir\0d4\0vmode\0mapper\0settime\0time\0setfeature\0hexdump\0w8\0w16\0";
+enum { CMD_CD = 0, CMD_RESET, CMD_SRESET, CMD_DIR, CMD_LS, CMD_TEST, CMD_RESUME, CMD_LOADROM, CMD_LOADRAW, CMD_SAVERAW, CMD_PUT, CMD_RM, CMD_MKDIR, CMD_D4, CMD_VMODE, CMD_MAPPER, CMD_SETTIME, CMD_TIME, CMD_SETFEATURE, CMD_HEXDUMP, CMD_W8, CMD_W16 };
 
 /* ------------------------------------------------------------------------- */
 /*   Parse functions                                                         */
@@ -294,7 +294,8 @@ static void cmd_loadraw(void) {
 static void cmd_saveraw(void) {
   uint32_t address = parse_unsigned(0,16777216,16);
   uint32_t length = parse_unsigned(0,16777216,16);
-  save_sram((uint8_t*)curchar, length, address);
+  if(address != -1 && length != -1)
+    save_sram((uint8_t*)curchar, length, address);
 }
 
 static void cmd_d4(void) {
@@ -348,6 +349,11 @@ void cmd_rm(void) {
   if(res) printf("Error %d removing %s\n", res, curchar);
 }
 
+void cmd_mkdir(void) {
+  FRESULT res = f_mkdir(curchar);
+  if(res) printf("Error %d creating directory %s\n", res, curchar);
+}
+
 void cmd_mapper(void) {
   int32_t mapper;
   mapper = parse_unsigned(0,7,10);
@@ -361,9 +367,7 @@ void cmd_sreset(void) {
     resetstate = parse_unsigned(0,1,10);
     snes_reset(resetstate);
   } else {
-    snes_reset(1);
-    delay_ms(20);
-    snes_reset(0);
+    snes_reset_pulse();
   }
 }
 void cmd_settime(void) {
@@ -518,6 +522,10 @@ void cli_loop(void) {
       cmd_rm();
       break;
 
+    case CMD_MKDIR:
+      cmd_mkdir();
+      break;
+
     case CMD_D4:
       cmd_d4();
       break;

src/clock.c

@@ -48,11 +48,9 @@ void clock_init() {
  */
   enableMainOsc();
   setClkSrc(CLKSRC_MAINOSC);
-// XXX  setPLL0MultPrediv(429, 19);
-// XXX  setPLL0MultPrediv(23, 2);
-  setPLL0MultPrediv(12, 1);
+  setPLL0MultPrediv(22, 1);
   enablePLL0();
-  setCCLKDiv(3);
+  setCCLKDiv(6);
   connectPLL0();
 }
 

src/config

@@ -1,4 +1,4 @@
-CONFIG_VERSION="0.1.2"
-#FWVER=00010200
-CONFIG_FWVER=66048
+CONFIG_VERSION="0.1.4a"
+#FWVER=00010300
+CONFIG_FWVER=0x01010400
 CONFIG_MCU_FOSC=12000000

src/config.h

@@ -35,18 +35,15 @@
 
 #define CONFIG_UART_NUM	          3
 // #define CONFIG_CPU_FREQUENCY      90315789
-#define CONFIG_CPU_FREQUENCY      96000000
+#define CONFIG_CPU_FREQUENCY      88000000
 //#define CONFIG_CPU_FREQUENCY      46000000
 #define CONFIG_UART_PCLKDIV       1
 #define CONFIG_UART_TX_BUF_SHIFT  8
-#define CONFIG_UART_BAUDRATE      921600
+//#define CONFIG_UART_BAUDRATE      921600
+#define CONFIG_UART_BAUDRATE      115200
 #define CONFIG_UART_DEADLOCKABLE
 
-#define SSP_CLK_DIVISOR_FAST 2
-#define SSP_CLK_DIVISOR_SLOW 250
-
-#define SSP_CLK_DIVISOR_FPGA_FAST 6
-#define SSP_CLK_DIVISOR_FPGA_SLOW 20
+#define SSP_CLK_DIVISOR           2
 
 #define SNES_RESET_REG            LPC_GPIO1
 #define SNES_RESET_BIT            26
@@ -68,6 +65,9 @@
 
 #define QSORT_MAXELEM             2048
 #define CLTBL_SIZE		  100
+
+#define DIR_FILE_MAX              16380
+
 #define SSP_REGS LPC_SSP0
 #define SSP_PCLKREG PCLKSEL1
 // 1: PCLKSEL0

src/diskio.h

@@ -55,7 +55,7 @@ DRESULT disk_read (BYTE, BYTE*, DWORD, BYTE);
 #if	_READONLY == 0
 DRESULT disk_write (BYTE, const BYTE*, DWORD, BYTE);
 #endif
-#define disk_ioctl(a,b,c) RES_OK
+DRESULT disk_ioctl (BYTE, BYTE, void*);
 
 void disk_init(void);
 

src/ff.c

@@ -3644,6 +3644,7 @@ TCHAR* f_gets (
 		*p++ = c;
 		n++;
 		if (c == '\n') break;		/* Break on EOL */
+		if (c == 0) break;		/* Break on NUL */
 	}
 	*p = 0;
 	return n ? buff : 0;			/* When no data read (eof or error), return with error. */

src/ffconf.h

@@ -36,7 +36,7 @@
 /   3: f_lseek is removed in addition to 2. */
 
 
-#define	_USE_STRFUNC	0	/* 0:Disable or 1/2:Enable */
+#define	_USE_STRFUNC	1	/* 0:Disable or 1/2:Enable */
 /* To enable string functions, set _USE_STRFUNC to 1 or 2. */
 
 

src/fileops.c

@@ -55,7 +55,7 @@ void file_open_by_filinfo(FILINFO* fno) {
   file_res = l_openfilebycluster(&fatfs, &file_handle, (TCHAR*)"", fno->clust, fno->fsize);
 }
 
-void file_open(uint8_t* filename, BYTE flags) {
+void file_open(const uint8_t* filename, BYTE flags) {
   if (disk_state == DISK_CHANGED) {
     file_reinit();
     newcard = 1;

src/fileops.h

@@ -40,7 +40,7 @@ uint16_t file_block_off, file_block_max;
 enum filestates file_status;
 
 void file_init(void);
-void file_open(uint8_t* filename, BYTE flags);
+void file_open(const uint8_t* filename, BYTE flags);
 FRESULT dir_open_by_filinfo(DIR* dir, FILINFO* fno_param);
 void file_open_by_filinfo(FILINFO* fno);
 void file_close(void);

src/filetypes.c

@@ -31,7 +31,7 @@
 #include "ff.h"
 #include "smc.h"
 #include "fileops.h"
-#include "crc32.h"
+#include "crc.h"
 #include "memory.h"
 #include "led.h"
 #include "sort.h"
@@ -60,7 +60,7 @@ uint32_t scan_dir(char* path, FILINFO* fno_param, char mkdb, uint32_t this_dir_t
   uint8_t len;
   TCHAR* fn;
   static unsigned char depth = 0;
-  static uint32_t crc;
+  static uint32_t crc, fncrc;
   static uint32_t db_tgt;
   static uint32_t next_subdir_tgt;
   static uint32_t parent_tgt;
@@ -69,6 +69,7 @@ uint32_t scan_dir(char* path, FILINFO* fno_param, char mkdb, uint32_t this_dir_t
   static uint16_t num_files_total = 0;
   static uint16_t num_dirs_total = 0;
   uint32_t dir_tgt;
+  uint32_t switched_dir_tgt = 0;
   uint16_t numentries;
   uint32_t dirsize;
   uint8_t pass = 0;
@@ -76,6 +77,7 @@ uint32_t scan_dir(char* path, FILINFO* fno_param, char mkdb, uint32_t this_dir_t
   char *size_units[3] = {" ", "k", "M"};
   uint32_t entry_fsize;
   uint8_t entry_unit_idx;
+  uint16_t entrycnt;
 
   dir_tgt = this_dir_tgt;
   if(depth==0) {
@@ -91,17 +93,26 @@ uint32_t scan_dir(char* path, FILINFO* fno_param, char mkdb, uint32_t this_dir_t
   fno.lfsize = 255;
   fno.lfname = (TCHAR*)file_lfn;
   numentries=0;
-  for(pass = 0; pass < 2; pass++) {
+  for(pass = 0; pass < (mkdb ? 2 : 1); pass++) {
     if(pass) {
-      num_dirs_total++;
       dirsize = 4*(numentries);
+      if(((next_subdir_tgt + dirsize + 8) & 0xff0000) > (next_subdir_tgt & 0xff0000)) {
+        printf("switchdir! old=%lX ", next_subdir_tgt + dirsize + 4);
+        next_subdir_tgt &= 0xffff0000;
+        next_subdir_tgt += 0x00010004;
+        printf("new=%lx\n", next_subdir_tgt);
+        dir_tgt &= 0xffff0000;
+        dir_tgt += 0x00010004;
+      }
+      switched_dir_tgt = dir_tgt;
       next_subdir_tgt += dirsize + 4;
       if(parent_tgt) next_subdir_tgt += 4;
       if(next_subdir_tgt > dir_end) {
         dir_end = next_subdir_tgt;
       }
-//      printf("path=%s depth=%d ptr=%lx entries=%d parent=%lx next subdir @%lx\n", path, depth, db_tgt, numentries, parent_tgt, next_subdir_tgt);
+      DBG_FS printf("path=%s depth=%d ptr=%lx entries=%d parent=%lx next subdir @%lx\n", path, depth, db_tgt, numentries, parent_tgt, next_subdir_tgt);
       if(mkdb) {
+        num_dirs_total++;
 //        printf("d=%d Saving %lx to Address %lx  [end]\n", depth, 0L, next_subdir_tgt - 4);
         sram_writelong(0L, next_subdir_tgt - 4);
       }
@@ -130,7 +141,8 @@ uint32_t scan_dir(char* path, FILINFO* fno_param, char mkdb, uint32_t this_dir_t
         dir_tgt += 4;
       }
       len = strlen((char*)path);
-      for (;;) {
+      /* scan at most DIR_FILE_MAX entries per directory */
+      for(entrycnt=0; entrycnt < DIR_FILE_MAX; entrycnt++) {
 //        toggle_read_led();
         res = f_readdir(&dir, &fno);
         if (res != FR_OK || fno.fname[0] == 0) {
@@ -140,17 +152,19 @@ uint32_t scan_dir(char* path, FILINFO* fno_param, char mkdb, uint32_t this_dir_t
           break;
         }
         fn = *fno.lfname ? fno.lfname : fno.fname;
-        if ((*fn == '.') || !(memcmp(fn, SYS_DIR_NAME, sizeof(SYS_DIR_NAME)))) continue;
+        if ((*fn == '.') || !(strncasecmp(fn, SYS_DIR_NAME, sizeof(SYS_DIR_NAME)))) continue;
         if (fno.fattrib & AM_DIR) {
           depth++;
           if(depth < FS_MAX_DEPTH) {
             numentries++;
-            if(pass) {
+            if(pass && mkdb) {
               path[len]='/';
               strncpy(path+len+1, (char*)fn, sizeof(fs_path)-len);
+              uint16_t pathlen = 0;
+              uint32_t old_db_tgt = 0;
               if(mkdb) {
-                uint16_t pathlen = strlen(path);
-//                printf("d=%d Saving %lx to Address %lx  [dir]\n", depth, db_tgt, dir_tgt);
+                pathlen = strlen(path);
+                DBG_FS printf("d=%d Saving %lx to Address %lx  [dir]\n", depth, db_tgt, dir_tgt);
                 /* save element:
                    - path name
                    - pointer to sub dir structure */
@@ -160,22 +174,31 @@ uint32_t scan_dir(char* path, FILINFO* fno_param, char mkdb, uint32_t this_dir_t
                   db_tgt += 0x00010000;
                   printf("new=%lx\n", db_tgt);
                 }
-//                printf("    Saving dir descriptor to %lx tgt=%lx, path=%s\n", db_tgt, next_subdir_tgt, path);
                 /* write element pointer to current dir structure */
                 sram_writelong((db_tgt-SRAM_MENU_ADDR)|((uint32_t)0x80<<24), dir_tgt);
                 /* save element:
                    - path name
-                   - pointer to sub dir structure */
-                sram_writelong((next_subdir_tgt-SRAM_MENU_ADDR), db_tgt);
-                sram_writebyte(len+1, db_tgt+sizeof(next_subdir_tgt));
-                sram_writeblock(path, db_tgt+sizeof(next_subdir_tgt)+sizeof(len), pathlen);
-                sram_writeblock("/\0", db_tgt + sizeof(next_subdir_tgt) + sizeof(len) + pathlen, 2);
+                   - pointer to sub dir structure
+                   moved below */
+                old_db_tgt = db_tgt;
                 db_tgt += sizeof(next_subdir_tgt) + sizeof(len) + pathlen + 2;
               }
               parent_tgt = this_dir_tgt;
-              scan_dir(path, &fno, mkdb, next_subdir_tgt);
+              /* scan subdir before writing current dir element to account for bank switches */
+              uint32_t corrected_subdir_tgt = scan_dir(path, &fno, mkdb, next_subdir_tgt);
+              if(mkdb) {
+                DBG_FS printf("    Saving dir descriptor to %lx tgt=%lx, path=%s\n", old_db_tgt, corrected_subdir_tgt, path);
+                sram_writelong((corrected_subdir_tgt-SRAM_MENU_ADDR), old_db_tgt);
+                sram_writebyte(len+1, old_db_tgt+sizeof(next_subdir_tgt));
+                sram_writeblock(path, old_db_tgt+sizeof(next_subdir_tgt)+sizeof(len), pathlen);
+                sram_writeblock("/\0", old_db_tgt + sizeof(next_subdir_tgt) + sizeof(len) + pathlen, 2);
+              }
               dir_tgt += 4;
               was_empty = 0;
+            } else if(!mkdb) {
+              path[len]='/';
+              strncpy(path+len+1, (char*)fn, sizeof(fs_path)-len);
+              scan_dir(path, &fno, mkdb, next_subdir_tgt);
             }
           }
           depth--;
@@ -183,10 +206,10 @@ uint32_t scan_dir(char* path, FILINFO* fno_param, char mkdb, uint32_t this_dir_t
         } else {
           SNES_FTYPE type = determine_filetype((char*)fn);
           if(type != TYPE_UNKNOWN) {
-            num_files_total++;
             numentries++;
             if(pass) {
               if(mkdb) {
+                num_files_total++;
 /*                snes_romprops_t romprops; */
                 path[len]='/';
                 strncpy(path+len+1, (char*)fn, sizeof(fs_path)-len);
@@ -194,13 +217,7 @@ uint32_t scan_dir(char* path, FILINFO* fno_param, char mkdb, uint32_t this_dir_t
                 switch(type) {
                   case TYPE_IPS:
                   case TYPE_SMC:
-/*                    file_open_by_filinfo(&fno);
-                    if(file_res){
-                      printf("ZOMG NOOOO %d\n", file_res);
-                    }
-                    smc_id(&romprops);
-                    file_close(); */
-
+                  case TYPE_SPC:
                     /* write element pointer to current dir structure */
                     DBG_FS printf("d=%d Saving %lX to Address %lX  [file %s]\n", depth, db_tgt, dir_tgt, path);
                     if((db_tgt&0xffff) > ((0x10000-(sizeof(len) + pathlen + sizeof(buf)-1 + 1))&0xffff)) {
@@ -234,29 +251,30 @@ uint32_t scan_dir(char* path, FILINFO* fno_param, char mkdb, uint32_t this_dir_t
                   default:
                    break;
                 }
-                path[len]=0;
+                path[len] = 0;
 /*              printf("%s ", path);
                 _delay_ms(30); */
               }
             } else {
               TCHAR* fn2 = fn;
+              fncrc = 0;
               while(*fn2 != 0) {
-                crc += crc32_update(crc, *((unsigned char*)fn2++));
+                fncrc += crc_xmodem_update(fncrc, *((unsigned char*)fn2++));
               }
+              crc += fncrc;
             }
           }
-/*        printf("%s/%s\n", path, fn);
-          _delay_ms(50); */
         }
       }
     } else uart_putc(0x30+res);
   }
-//  printf("db_tgt=%lx dir_end=%lx\n", db_tgt, dir_end);
+  DBG_FS printf("db_tgt=%lx dir_end=%lx\n", db_tgt, dir_end);
   sram_writelong(db_tgt, SRAM_DB_ADDR+4);
   sram_writelong(dir_end, SRAM_DB_ADDR+8);
   sram_writeshort(num_files_total, SRAM_DB_ADDR+12);
   sram_writeshort(num_dirs_total, SRAM_DB_ADDR+14);
-  return crc;
+  if(depth==0) return crc;
+  else return switched_dir_tgt;
 }
 
 
@@ -271,18 +289,14 @@ SNES_FTYPE determine_filetype(char* filename) {
     ) {
     return TYPE_SMC;
   }
-  if(  (!strcasecmp(ext+1, "IPS"))
+/*  if(  (!strcasecmp(ext+1, "IPS"))
      ||(!strcasecmp(ext+1, "UPS"))
     ) {
     return TYPE_IPS;
-  }
-  /* later
-  if(!strcasecmp_P(ext+1, PSTR("SRM"))) {
-    return TYPE_SRM;
-  }
-  if(!strcasecmp_P(ext+1, PSTR("SPC"))) {
-    return TYPE_SPC;
   }*/
+  if(!strcasecmp(ext+1, "SPC")) {
+    return TYPE_SPC;
+  }
   return TYPE_UNKNOWN;
 }
 

src/filetypes.h

@@ -36,7 +36,7 @@
 #include "ff.h"
 
 #define FS_MAX_DEPTH	(10)
-#define SYS_DIR_NAME	((const uint8_t*)"sd2snes")
+#define SYS_DIR_NAME	((const char*)"sd2snes")
 typedef enum {
   TYPE_UNKNOWN = 0, /* 0 */
   TYPE_SMC,         /* 1 */

src/fpga.c

@@ -102,6 +102,10 @@ void fpga_pgm(uint8_t* filename) {
     i=0;
     timeout = getticks() + 100;
     fpga_set_prog_b(0);
+if(BITBAND(PROGBREG->FIOPIN, PROGBBIT)) {
+  printf("PROGB is stuck high!\n");
+  led_panic();
+}
     uart_putc('P');
     fpga_set_prog_b(1);
     while(!fpga_get_initb()){
@@ -110,6 +114,10 @@ void fpga_pgm(uint8_t* filename) {
         led_panic();
       }
     };
+    if(fpga_get_done()) {
+      printf("DONE is stuck high!\n");
+      led_panic();
+    }
     LPC_GPIO2->FIOMASK1 = ~(BV(0));
     uart_putc('p');
 
@@ -160,6 +168,10 @@ void fpga_rompgm() {
         led_panic();
       }
     };
+    if(fpga_get_done()) {
+      printf("DONE is stuck high!\n");
+      led_panic();
+    }
     LPC_GPIO2->FIOMASK1 = ~(BV(0));
     uart_putc('p');
 

src/fpga_spi.c

@@ -143,7 +143,7 @@
 #include "sdnative.h"
 
 void fpga_spi_init(void) {
-  spi_init(SPI_SPEED_FAST);
+  spi_init();
   BITBAND(FPGA_MCU_RDY_REG->FIODIR, FPGA_MCU_RDY_BIT) = 0;
 }
 
@@ -199,7 +199,6 @@ void set_mapper(uint8_t val) {
 uint8_t fpga_test() {
   FPGA_SELECT();
   FPGA_TX_BYTE(0xF0); /* TEST */
-  FPGA_TX_BYTE(0x00); /* dummy */
   uint8_t result = FPGA_RX_BYTE();
   FPGA_DESELECT();
   return result;
@@ -208,7 +207,6 @@ uint8_t fpga_test() {
 uint16_t fpga_status() {
   FPGA_SELECT();
   FPGA_TX_BYTE(0xF1); /* STATUS */
-  FPGA_TX_BYTE(0x00); /* dummy */
   uint16_t result = (FPGA_RX_BYTE()) << 8;
   result |= FPGA_RX_BYTE();
   FPGA_DESELECT();
@@ -237,12 +235,12 @@ void fpga_sddma(uint8_t tgt, uint8_t partial) {
   FPGA_DESELECT();
   FPGA_SELECT();
   FPGA_TX_BYTE(0xF1); /* STATUS */
-  FPGA_TX_BYTE(0x00); /* dummy */
   DBG_SD printf("FPGA DMA request sent, wait for completion...");
   while((status=FPGA_RX_BYTE()) & 0x80) {
     FPGA_RX_BYTE(); /* eat the 2nd status byte */
     test++;
   }
+
   DBG_SD printf("...complete\n");
   FPGA_DESELECT();
 //  if(test<5)printf("loopy: %ld %02x\n", test, status);
@@ -302,7 +300,6 @@ void set_msu_status(uint8_t set, uint8_t reset) {
 uint8_t get_msu_volume() {
   FPGA_SELECT();
   FPGA_TX_BYTE(0xF4); /* MSU_VOLUME */
-  FPGA_TX_BYTE(0x00); /* dummy */
   uint8_t result = FPGA_RX_BYTE();
   FPGA_DESELECT();
   return result;
@@ -311,7 +308,6 @@ uint8_t get_msu_volume() {
 uint16_t get_msu_track() {
   FPGA_SELECT();
   FPGA_TX_BYTE(0xF3); /* MSU_TRACK */
-  FPGA_TX_BYTE(0x00); /* dummy */
   uint16_t result = (FPGA_RX_BYTE()) << 8;
   result |= FPGA_RX_BYTE();
   FPGA_DESELECT();
@@ -321,7 +317,6 @@ uint16_t get_msu_track() {
 uint32_t get_msu_offset() {
   FPGA_SELECT();
   FPGA_TX_BYTE(0xF2); /* MSU_OFFSET */
-  FPGA_TX_BYTE(0x00); /* dummy */
   uint32_t result = (FPGA_RX_BYTE()) << 24;
   result |= (FPGA_RX_BYTE()) << 16;
   result |= (FPGA_RX_BYTE()) << 8;
@@ -333,8 +328,7 @@ uint32_t get_msu_offset() {
 uint32_t get_snes_sysclk() {
   FPGA_SELECT();
   FPGA_TX_BYTE(0xFE); /* GET_SYSCLK */
-  FPGA_TX_BYTE(0x00); /* dummy */
-  FPGA_TX_BYTE(0x00); /* dummy */
+  FPGA_TX_BYTE(0x00); /* dummy (copy current sysclk count to register) */
   uint32_t result = (FPGA_RX_BYTE()) << 24;
   result |= (FPGA_RX_BYTE()) << 16;
   result |= (FPGA_RX_BYTE()) << 8;

src/fpga_spi.h

@@ -47,9 +47,6 @@
 #define FPGA_TX_BLOCK(x,y) spi_tx_block(x,y)
 #define FPGA_RX_BLOCK(x,y) spi_rx_block(x,y)
 
-#define FPGA_SPI_FAST()    spi_set_speed(SPI_SPEED_FPGA_FAST)
-#define FPGA_SPI_SLOW()    spi_set_speed(SPI_SPEED_FPGA_SLOW)
-
 #define FEAT_213F          (1 << 4)
 #define FEAT_MSU1          (1 << 3)
 #define FEAT_SRTC          (1 << 2)

src/led.c

@@ -86,13 +86,16 @@ void toggle_write_led() {
 }
 
 void led_panic() {
+  led_std();
   while(1) {
-    LPC_GPIO2->FIODIR |= BV(4) | BV(5);
-    LPC_GPIO1->FIODIR |= BV(23);
-    delay_ms(350);
-    LPC_GPIO2->FIODIR &= ~(BV(4) | BV(5));
-    LPC_GPIO1->FIODIR &= ~BV(23);
-    delay_ms(350);
+    rdyled(1);
+    readled(1);
+    writeled(1);
+    delay_ms(100);
+    rdyled(0);
+    readled(0);
+    writeled(0);
+    delay_ms(100);
     cli_entrycheck();
   }
 }

src/main.c

@@ -27,6 +27,7 @@
 #include "msu1.h"
 #include "rtc.h"
 #include "sysinfo.h"
+#include "cfg.h"
 
 #define EMC0TOGGLE	(3<<4)
 #define MR0R		(1<<1)
@@ -45,8 +46,11 @@ extern volatile tick_t ticks;
 extern snes_romprops_t romprops;
 extern volatile int reset_changed;
 
+extern volatile cfg_t CFG;
+
 enum system_states {
-  SYS_RTC_STATUS = 0
+  SYS_RTC_STATUS = 0,
+  SYS_LAST_STATUS = 1
 };
 
 int main(void) {
@@ -138,6 +142,11 @@ printf("PCONP=%lx\n", LPC_SC->PCONP);
     readled(0);
     writeled(0);
 
+    cfg_load();
+    cfg_save();
+    sram_writebyte(cfg_is_last_game_valid(), SRAM_STATUS_ADDR+SYS_LAST_STATUS);
+    cfg_get_last_game(file_lfn);
+    sram_writeblock(strrchr((const char*)file_lfn, '/')+1, SRAM_LASTGAME_ADDR, 256);
     *fs_path=0;
     uint32_t saved_dir_id;
     get_db_id(&saved_dir_id);
@@ -170,25 +179,27 @@ printf("PCONP=%lx\n", LPC_SC->PCONP);
 	snes_bootprint("        saving database ...     \0");
 	save_sram((uint8_t*)"/sd2snes/sd2snes.db", endaddr-SRAM_DB_ADDR, SRAM_DB_ADDR);
 	save_sram((uint8_t*)"/sd2snes/sd2snes.dir", direndaddr-(SRAM_DIR_ADDR), SRAM_DIR_ADDR);
+        fpga_pgm((uint8_t*)"/sd2snes/fpga_base.bit");
 	printf("done\n");
       } else {
 	printf("saved dir id = %lx\n", saved_dir_id);
 	printf("different card, consistent db, loading db...\n");
-	load_sram((uint8_t*)"/sd2snes/sd2snes.db", SRAM_DB_ADDR);
-	load_sram((uint8_t*)"/sd2snes/sd2snes.dir", SRAM_DIR_ADDR);
+        fpga_pgm((uint8_t*)"/sd2snes/fpga_base.bit");
+	load_sram_offload((uint8_t*)"/sd2snes/sd2snes.db", SRAM_DB_ADDR);
+	load_sram_offload((uint8_t*)"/sd2snes/sd2snes.dir", SRAM_DIR_ADDR);
       }
       sram_writelong(curr_dir_id, SRAM_DIRID);
       sram_writelong(0x12345678, SRAM_SCRATCHPAD);
     } else {
       snes_bootprint("    same card, loading db...     \0");
       printf("same card, loading db...\n");
-      load_sram((uint8_t*)"/sd2snes/sd2snes.db", SRAM_DB_ADDR);
-      load_sram((uint8_t*)"/sd2snes/sd2snes.dir", SRAM_DIR_ADDR);
+      fpga_pgm((uint8_t*)"/sd2snes/fpga_base.bit");
+      load_sram_offload((uint8_t*)"/sd2snes/sd2snes.db", SRAM_DB_ADDR);
+      load_sram_offload((uint8_t*)"/sd2snes/sd2snes.dir", SRAM_DIR_ADDR);
     }
     /* cli_loop(); */
     /* load menu */
 
-    fpga_pgm((uint8_t*)"/sd2snes/fpga_base.bit");
     fpga_dspx_reset(1);
     uart_putc('(');
     load_rom((uint8_t*)"/sd2snes/menu.bin", SRAM_MENU_ADDR, 0);
@@ -203,8 +214,8 @@ printf("PCONP=%lx\n", LPC_SC->PCONP);
     if((rtc_state = rtc_isvalid()) != RTC_OK) {
       printf("RTC invalid!\n");
       sram_writebyte(0xff, SRAM_STATUS_ADDR+SYS_RTC_STATUS);
-      set_bcdtime(0x20110401000000LL);
-      set_fpga_time(0x20110401000000LL);
+      set_bcdtime(0x20120701000000LL);
+      set_fpga_time(0x20120701000000LL);
       invalidate_rtc();
     } else {
       printf("RTC valid!\n");
@@ -214,13 +225,14 @@ printf("PCONP=%lx\n", LPC_SC->PCONP);
     sram_memset(SRAM_SYSINFO_ADDR, 13*40, 0x20);
     printf("SNES GO!\n");
     snes_reset(1);
-    delay_ms(1);
+    fpga_reset_srtc_state();
+    delay_ms(SNES_RESET_PULSELEN_MS);
+    sram_writebyte(32, SRAM_CMD_ADDR);
     snes_reset(0);
 
     uint8_t cmd = 0;
     uint64_t btime = 0;
     uint32_t filesize=0;
-    sram_writebyte(32, SRAM_CMD_ADDR);
     printf("test sram\n");
     while(!sram_reliable()) cli_entrycheck();
     printf("ok\n");
@@ -238,6 +250,9 @@ printf("PCONP=%lx\n", LPC_SC->PCONP);
 	case SNES_CMD_LOADROM:
 	  get_selected_name(file_lfn);
 	  printf("Selected name: %s\n", file_lfn);
+          cfg_save_last_game(file_lfn);
+          cfg_set_last_game_valid(1);
+          cfg_save();
 	  filesize = load_rom(file_lfn, SRAM_ROM_ADDR, LOADROM_WITH_SRAM | LOADROM_WITH_RESET);
 	  break;
 	case SNES_CMD_SETRTC:
@@ -253,6 +268,24 @@ printf("PCONP=%lx\n", LPC_SC->PCONP);
           sysinfo_loop();
           cmd=0; /* stay in menu loop */
           break;
+        case SNES_CMD_LOADSPC:
+          /* load SPC file */
+          get_selected_name(file_lfn);
+          printf("Selected name: %s\n", file_lfn);
+          filesize = load_spc(file_lfn, SRAM_SPC_DATA_ADDR, SRAM_SPC_HEADER_ADDR);
+          cmd=0; /* stay in menu loop */
+          break;
+        case SNES_CMD_RESET:
+          /* process RESET request from SNES */
+          printf("RESET requested by SNES\n");
+          snes_reset_pulse();
+          cmd=0; /* stay in menu loop */
+          break;
+        case SNES_CMD_LOADLAST:
+          cfg_get_last_game(file_lfn);
+          printf("Selected name: %s\n", file_lfn);
+          filesize = load_rom(file_lfn, SRAM_ROM_ADDR, LOADROM_WITH_SRAM | LOADROM_WITH_RESET);
+          break;
 	default:
 	  printf("unknown cmd: %d\n", cmd);
 	  cmd=0; /* unknown cmd: stay in loop */

src/memory.c

@@ -199,6 +199,8 @@ uint32_t load_rom(uint8_t* filename, uint32_t base_addr, uint8_t flags) {
   }
   set_mcu_addr(base_addr);
   file_open(filename, FA_READ);
+  ff_sd_offload=1;
+  sd_offload_tgt=0;
   f_lseek(&file_handle, romprops.offset);
   for(;;) {
     ff_sd_offload=1;
@@ -218,6 +220,8 @@ uint32_t load_rom(uint8_t* filename, uint32_t base_addr, uint8_t flags) {
     printf("BSX Flash cart image\n");
     printf("attempting to load BSX BIOS /sd2snes/bsxbios.bin...\n");
     load_sram_offload((uint8_t*)"/sd2snes/bsxbios.bin", 0x800000);
+    printf("attempting to load BS data file /sd2snes/bsxpage.bin...\n");
+    load_sram_offload((uint8_t*)"/sd2snes/bsxpage.bin", 0x900000);
     printf("Type: %02x\n", romprops.header.destcode);
     set_bsx_regs(0xc0, 0x3f);
     uint16_t rombase;
@@ -288,15 +292,90 @@ uint32_t load_rom(uint8_t* filename, uint32_t base_addr, uint8_t flags) {
 
   if(flags & LOADROM_WITH_RESET) {
     fpga_dspx_reset(1);
-    snes_reset(1);
-    delay_ms(10);
-    snes_reset(0);
+    snes_reset_pulse();
     fpga_dspx_reset(0);
   }
 
   return (uint32_t)filesize;
 }
 
+uint32_t load_spc(uint8_t* filename, uint32_t spc_data_addr, uint32_t spc_header_addr) {
+  DWORD filesize;
+  UINT bytes_read;
+  uint8_t data;
+  UINT j;
+
+  printf("%s\n", filename);
+
+  file_open(filename, FA_READ); /* Open SPC file */
+  if(file_res) return 0;
+  filesize = file_handle.fsize;
+  if (filesize < 65920) { /*  At this point, we care about filesize only */
+    file_close();         /* since SNES decides if it is an SPC file */
+    sram_writebyte(0, spc_header_addr);	/* If file is too small, destroy previous SPC header */
+    return 0;
+  }
+
+  set_mcu_addr(spc_data_addr);
+  f_lseek(&file_handle, 0x100L); /* Load 64K data segment */
+
+  for(;;) {
+    bytes_read = file_read();
+    if (file_res || !bytes_read) break;
+    FPGA_SELECT();
+    FPGA_TX_BYTE(0x98);
+    for(j=0; j<bytes_read; j++) {
+      FPGA_TX_BYTE(file_buf[j]);
+      FPGA_WAIT_RDY();
+    }
+    FPGA_DESELECT();
+  }
+
+  file_close();
+  file_open(filename, FA_READ); /* Reopen SPC file to reset file_getc state*/
+
+  set_mcu_addr(spc_header_addr);
+  f_lseek(&file_handle, 0x0L); /* Load 256 bytes header */
+
+  FPGA_SELECT();
+  FPGA_TX_BYTE(0x98);
+  for (j = 0; j < 256; j++) {
+    data = file_getc();
+    FPGA_TX_BYTE(data);
+    FPGA_WAIT_RDY();
+  }
+  FPGA_DESELECT();
+
+  file_close();
+  file_open(filename, FA_READ); /* Reopen SPC file to reset file_getc state*/
+
+  set_mcu_addr(spc_header_addr+0x100);
+  f_lseek(&file_handle, 0x10100L); /* Load 128 DSP registers */
+
+  FPGA_SELECT();
+  FPGA_TX_BYTE(0x98);
+  for (j = 0; j < 128; j++) {
+    data = file_getc();
+    FPGA_TX_BYTE(data);
+    FPGA_WAIT_RDY();
+  }
+  FPGA_DESELECT();
+  file_close(); /* Done ! */
+
+  /* clear echo buffer to avoid artifacts */
+  uint8_t esa = sram_readbyte(spc_header_addr+0x100+0x6d);
+  uint8_t edl = sram_readbyte(spc_header_addr+0x100+0x7d);
+  uint8_t flg = sram_readbyte(spc_header_addr+0x100+0x6c);
+  if(!(flg & 0x20) && (edl & 0x0f)) {
+    int echo_start = esa << 8;
+    int echo_length = (edl & 0x0f) << 11;
+    printf("clearing echo buffer %04x-%04x...\n", echo_start, echo_start+echo_length-1);
+    sram_memset(spc_data_addr+echo_start, echo_length, 0);
+  }
+
+  return (uint32_t)filesize;
+}
+
 uint32_t load_sram_offload(uint8_t* filename, uint32_t base_addr) {
   set_mcu_addr(base_addr);
   UINT bytes_read;

src/memory.h

@@ -33,14 +33,19 @@
 #define SRAM_ROM_ADDR           (0x000000L)
 #define SRAM_SAVE_ADDR          (0xE00000L)
 
-#define SRAM_MENU_ADDR          (0xE00000L)
-#define SRAM_DB_ADDR            (0xE40000L)
-#define SRAM_DIR_ADDR           (0xE10000L)
+#define SRAM_MENU_ADDR          (0xC00000L)
+#define SRAM_DIR_ADDR           (0xC10000L)
+#define SRAM_DB_ADDR            (0xC80000L)
+
+#define SRAM_SPC_DATA_ADDR      (0xFD0000L)
+#define SRAM_SPC_HEADER_ADDR    (0xFE0000L)
+
+#define SRAM_MENU_SAVE_ADDR     (0xFF0000L)
 #define SRAM_CMD_ADDR           (0xFF1000L)
 #define SRAM_PARAM_ADDR         (0xFF1004L)
 #define SRAM_STATUS_ADDR        (0xFF1100L)
-#define SRAM_SYSINFO_ADDR       (0xFF1110L)
-#define SRAM_MENU_SAVE_ADDR     (0xFF0000L)
+#define SRAM_SYSINFO_ADDR       (0xFF1200L)
+#define SRAM_LASTGAME_ADDR      (0xFF1420L)
 #define SRAM_SCRATCHPAD         (0xFFFF00L)
 #define SRAM_DIRID              (0xFFFFF0L)
 #define SRAM_RELIABILITY_SCORE  (0x100)
@@ -49,6 +54,7 @@
 #define LOADROM_WITH_RESET	(2)
 
 uint32_t load_rom(uint8_t* filename, uint32_t base_addr, uint8_t flags);
+uint32_t load_spc(uint8_t* filename, uint32_t spc_data_addr, uint32_t spc_header_addr);
 uint32_t load_sram(uint8_t* filename, uint32_t base_addr);
 uint32_t load_sram_offload(uint8_t* filename, uint32_t base_addr);
 uint32_t load_sram_rle(uint8_t* filename, uint32_t base_addr);

src/msu1.c

@@ -13,25 +13,132 @@
 #include "smc.h"
 
 FIL msufile;
+FRESULT msu_res;
 DWORD msu_cltbl[CLTBL_SIZE] IN_AHBRAM;
 DWORD pcm_cltbl[CLTBL_SIZE] IN_AHBRAM;
+UINT msu_audio_bytes_read = 1024;
+UINT msu_data_bytes_read = 1;
 
 extern snes_romprops_t romprops;
+uint32_t msu_loop_point = 0;
+uint32_t msu_page1_start = 0x0000;
+uint32_t msu_page2_start = 0x2000;
+uint32_t msu_page_size = 0x2000;
+uint16_t fpga_status_prev;
+uint16_t fpga_status_now;
+
+enum msu_reset_state { MSU_RESET_NONE = 0, MSU_RESET_SHORT, MSU_RESET_LONG };
+
+void prepare_audio_track(uint16_t msu_track) {
+  /* open file, fill buffer */
+  char suffix[11];
+  f_close(&file_handle);
+  snprintf(suffix, sizeof(suffix), "-%d.pcm", msu_track);
+  strcpy((char*)file_buf, (char*)file_lfn);
+  strcpy(strrchr((char*)file_buf, (int)'.'), suffix);
+  DBG_MSU1 printf("filename: %s\n", file_buf);
+  if(f_open(&file_handle, (const TCHAR*)file_buf, FA_READ) == FR_OK) {
+    file_handle.cltbl = pcm_cltbl;
+    pcm_cltbl[0] = CLTBL_SIZE;
+    f_lseek(&file_handle, CREATE_LINKMAP);
+    f_lseek(&file_handle, 4L);
+    f_read(&file_handle, &msu_loop_point, 4, &msu_audio_bytes_read);
+    DBG_MSU1 printf("loop point: %ld samples\n", msu_loop_point);
+    ff_sd_offload=1;
+    sd_offload_tgt=1;
+    f_lseek(&file_handle, 8L);
+    set_dac_addr(0);
+    dac_pause();
+    dac_reset();
+    ff_sd_offload=1;
+    sd_offload_tgt=1;
+    f_read(&file_handle, file_buf, MSU_DAC_BUFSIZE, &msu_audio_bytes_read);
+    /* clear busy bit */
+    set_msu_status(0x00, 0x28); /* set no bits, reset audio_busy + audio_error */
+  } else {
+    f_close(&file_handle);
+    set_msu_status(0x08, 0x20); /* reset audio_busy, set audio_error */
+  }
+}
+
+void prepare_data(uint32_t msu_offset) {
+  DBG_MSU1 printf("Data requested! Offset=%08lx page1=%08lx page2=%08lx\n", msu_offset, msu_page1_start, msu_page2_start);
+  if(   ((msu_offset < msu_page1_start)
+     || (msu_offset >= msu_page1_start + msu_page_size))
+     && ((msu_offset < msu_page2_start)
+     || (msu_offset >= msu_page2_start + msu_page_size))) {
+    DBG_MSU1 printf("offset %08lx out of range (%08lx-%08lx, %08lx-%08lx), reload\n", msu_offset, msu_page1_start,
+           msu_page1_start+msu_page_size-1, msu_page2_start, msu_page2_start+msu_page_size-1);
+    /* "cache miss" */
+    /* fill buffer */
+    set_msu_addr(0x0);
+    sd_offload_tgt=2;
+    ff_sd_offload=1;
+    msu_res = f_lseek(&msufile, msu_offset);
+    DBG_MSU1 printf("seek to %08lx, res = %d\n", msu_offset, msu_res);
+    sd_offload_tgt=2;
+    ff_sd_offload=1;
+    msu_res = f_read(&msufile, file_buf, 16384, &msu_data_bytes_read);
+    DBG_MSU1 printf("read res = %d\n", msu_res);
+    DBG_MSU1 printf("read %d bytes\n", msu_data_bytes_read);
+    msu_reset(0x0);
+    msu_page1_start = msu_offset;
+    msu_page2_start = msu_offset + msu_page_size;
+  } else {
+    if (msu_offset >= msu_page1_start && msu_offset <= msu_page1_start + msu_page_size) {
+      msu_reset(0x0000 + msu_offset - msu_page1_start);
+      DBG_MSU1 printf("inside page1, new offset: %08lx\n", 0x0000 + msu_offset-msu_page1_start);
+      if(!(msu_page2_start == msu_page1_start + msu_page_size)) {
+        set_msu_addr(0x2000);
+        sd_offload_tgt=2;
+        ff_sd_offload=1;
+        f_read(&msufile, file_buf, 8192, &msu_data_bytes_read);
+        DBG_MSU1 printf("next page dirty (was: %08lx), loaded page2 (start now: ", msu_page2_start);
+        msu_page2_start = msu_page1_start + msu_page_size;
+        DBG_MSU1 printf("%08lx)\n", msu_page2_start);
+      }
+    } else if (msu_offset >= msu_page2_start && msu_offset <= msu_page2_start + msu_page_size) {
+      DBG_MSU1 printf("inside page2, new offset: %08lx\n", 0x2000 + msu_offset-msu_page2_start);
+      msu_reset(0x2000 + msu_offset - msu_page2_start);
+      if(!(msu_page1_start == msu_page2_start + msu_page_size)) {
+        set_msu_addr(0x0);
+        sd_offload_tgt=2;
+        ff_sd_offload=1;
+        f_read(&msufile, file_buf, 8192, &msu_data_bytes_read);
+        DBG_MSU1 printf("next page dirty (was: %08lx), loaded page1 (start now: ", msu_page1_start);
+        msu_page1_start = msu_page2_start + msu_page_size;
+        DBG_MSU1 printf("%08lx)\n", msu_page1_start);
+      }
+    } else printf("!!!WATWATWAT!!!\n");
+  }
+  /* clear bank bit to mask bank reset artifact */
+  fpga_status_now &= ~0x2000;
+  fpga_status_prev &= ~0x2000;
+  /* clear busy bit */
+  set_msu_status(0x00, 0x10);
+}
 
 int msu1_check_reset(void) {
   static tick_t rising_ticks;
 
   static uint8_t resbutton=0, resbutton_prev=0;
+  int result = MSU_RESET_NONE;
   resbutton = get_snes_reset();
   if(resbutton && !resbutton_prev) { /* push */
     rising_ticks = getticks();
   } else if(resbutton && resbutton_prev) { /* hold */
     if(getticks() > rising_ticks + 99) {
-      return 1;
+      result = MSU_RESET_LONG;
     }
+  } else if(!resbutton && resbutton_prev) { /* release */
+    if(getticks() < rising_ticks + 99) {
+      result = MSU_RESET_SHORT;
+    }
+  } else {
+    result = MSU_RESET_NONE;
   }
   resbutton_prev = resbutton;
-  return 0;
+  return result;
 }
 
 int msu1_check(uint8_t* filename) {
@@ -54,23 +161,29 @@ int msu1_check(uint8_t* filename) {
 
 int msu1_loop() {
 /* it is assumed that the MSU file is already opened by calling msu1_check(). */
-  UINT bytes_read = 1024;
-  UINT bytes_read2 = 1;
-  FRESULT res;
   set_dac_vol(0x00);
   while(fpga_status() & 0x4000);
-  uint16_t fpga_status_prev = fpga_status();
-  uint16_t fpga_status_now = fpga_status();
   uint16_t dac_addr = 0;
   uint16_t msu_addr = 0;
   uint8_t msu_repeat = 0;
   uint16_t msu_track = 0;
   uint32_t msu_offset = 0;
-  uint32_t msu_loop_point = 0;
+  fpga_status_prev = fpga_status();
+  fpga_status_now = fpga_status();
+  int msu_res;
 
-  uint32_t msu_page1_start = 0x0000;
-  uint32_t msu_page2_start = 0x2000;
-  uint32_t msu_page_size = 0x2000;
+/*  set_msu_addr(0x0);
+  msu_reset(0x0);
+  ff_sd_offload=1;
+  sd_offload_tgt=2;
+  f_lseek(&msufile, 0L);
+  ff_sd_offload=1;
+  sd_offload_tgt=2;
+  f_read(&msufile, file_buf, 16384, &msu_data_bytes_read);
+*/
+  set_dac_addr(dac_addr);
+  dac_pause();
+  dac_reset();
 
   set_msu_addr(0x0);
   msu_reset(0x0);
@@ -79,13 +192,12 @@ int msu1_loop() {
   f_lseek(&msufile, 0L);
   ff_sd_offload=1;
   sd_offload_tgt=2;
-  f_read(&msufile, file_buf, 16384, &bytes_read2);
+  f_read(&msufile, file_buf, 16384, &msu_data_bytes_read);
 
-  set_dac_addr(dac_addr);
-  dac_pause();
-  dac_reset();
+  prepare_audio_track(0);
+  prepare_data(0);
 /* audio_start, data_start, 0, audio_ctrl[1:0], ctrl_start */
-  while(1){
+  while((msu_res = msu1_check_reset()) == MSU_RESET_NONE){
     cli_entrycheck();
     fpga_status_now = fpga_status();
 
@@ -94,175 +206,99 @@ int msu1_loop() {
       DBG_MSU1 printf("data\n");
       uint8_t pageno = 0;
       if(fpga_status_now & 0x2000) {
-	msu_addr = 0x0;
-	msu_page1_start = msu_page2_start + msu_page_size;
-	pageno = 1;
+        msu_addr = 0x0;
+        msu_page1_start = msu_page2_start + msu_page_size;
+        pageno = 1;
       } else {
-	msu_addr = 0x2000;
-	msu_page2_start = msu_page1_start + msu_page_size;
-	pageno = 2;
+        msu_addr = 0x2000;
+        msu_page2_start = msu_page1_start + msu_page_size;
+        pageno = 2;
       }
       set_msu_addr(msu_addr);
       sd_offload_tgt=2;
       ff_sd_offload=1;
-      res = f_read(&msufile, file_buf, 8192, &bytes_read2);
-      DBG_MSU1 printf("data buffer refilled. res=%d page1=%08lx page2=%08lx\n", res, msu_page1_start, msu_page2_start);
+      msu_res = f_read(&msufile, file_buf, 8192, &msu_data_bytes_read);
+      DBG_MSU1 printf("data buffer refilled. res=%d page1=%08lx page2=%08lx\n", msu_res, msu_page1_start, msu_page2_start);
     }
 
     /* Audio buffer refill */
     if((fpga_status_now & 0x4000) != (fpga_status_prev & 0x4000)) {
       if(fpga_status_now & 0x4000) {
-	dac_addr = 0;
+        dac_addr = 0;
       } else {
-	dac_addr = MSU_DAC_BUFSIZE/2;
+        dac_addr = MSU_DAC_BUFSIZE/2;
       }
       set_dac_addr(dac_addr);
       sd_offload_tgt=1;
       ff_sd_offload=1;
-      f_read(&file_handle, file_buf, MSU_DAC_BUFSIZE/2, &bytes_read);
+      f_read(&file_handle, file_buf, MSU_DAC_BUFSIZE/2, &msu_audio_bytes_read);
     }
 
     if(fpga_status_now & 0x0020) {
-      char suffix[11];
-
       /* get trackno */
       msu_track = get_msu_track();
       DBG_MSU1 printf("Audio requested! Track=%d\n", msu_track);
 
-      /* open file, fill buffer */
-      f_close(&file_handle);
-      snprintf(suffix, sizeof(suffix), "-%d.pcm", msu_track);
-      strcpy((char*)file_buf, (char*)file_lfn);
-      strcpy(strrchr((char*)file_buf, (int)'.'), suffix);
-      DBG_MSU1 printf("filename: %s\n", file_buf);
-      f_open(&file_handle, (const TCHAR*)file_buf, FA_READ);
-      file_handle.cltbl = pcm_cltbl;
-      pcm_cltbl[0] = CLTBL_SIZE;
-      f_lseek(&file_handle, CREATE_LINKMAP);
-      f_lseek(&file_handle, 4L);
-      f_read(&file_handle, &msu_loop_point, 4, &bytes_read);
-      DBG_MSU1 printf("loop point: %ld samples\n", msu_loop_point);
-      ff_sd_offload=1;
-      sd_offload_tgt=1;
-      f_lseek(&file_handle, 8L);
-      set_dac_addr(0);
-      dac_pause();
-      dac_reset();
-      ff_sd_offload=1;
-      sd_offload_tgt=1;
-      f_read(&file_handle, file_buf, MSU_DAC_BUFSIZE, &bytes_read);
-
-      /* clear busy bit */
-      set_msu_status(0x00, 0x20); /* set no bits, reset bit 5 */
+      prepare_audio_track(msu_track);
     }
 
     if(fpga_status_now & 0x0010) {
       /* get address */
       msu_offset=get_msu_offset();
-      DBG_MSU1 printf("Data requested! Offset=%08lx page1=%08lx page2=%08lx\n", msu_offset, msu_page1_start, msu_page2_start);
-      if(   ((msu_offset < msu_page1_start)
-	 || (msu_offset >= msu_page1_start + msu_page_size))
-	 && ((msu_offset < msu_page2_start)
-	 || (msu_offset >= msu_page2_start + msu_page_size))) {
-	DBG_MSU1 printf("offset %08lx out of range (%08lx-%08lx, %08lx-%08lx), reload\n", msu_offset, msu_page1_start,
-	       msu_page1_start+msu_page_size-1, msu_page2_start, msu_page2_start+msu_page_size-1);
-	/* "cache miss" */
-	/* fill buffer */
-	set_msu_addr(0x0);
-	sd_offload_tgt=2;
-	ff_sd_offload=1;
-        res = f_lseek(&msufile, msu_offset);
-	DBG_MSU1 printf("seek to %08lx, res = %d\n", msu_offset, res);
-	sd_offload_tgt=2;
-	ff_sd_offload=1;
-
-        res = f_read(&msufile, file_buf, 16384, &bytes_read2);
-	DBG_MSU1 printf("read res = %d\n", res);
-	DBG_MSU1 printf("read %d bytes\n", bytes_read2);
-	msu_reset(0x0);
-	msu_page1_start = msu_offset;
-	msu_page2_start = msu_offset + msu_page_size;
-      } else {
-	if (msu_offset >= msu_page1_start && msu_offset <= msu_page1_start + msu_page_size) {
-	  msu_reset(0x0000 + msu_offset - msu_page1_start);
-	  DBG_MSU1 printf("inside page1, new offset: %08lx\n", 0x0000 + msu_offset-msu_page1_start);
-	  if(!(msu_page2_start == msu_page1_start + msu_page_size)) {
-	    set_msu_addr(0x2000);
-	    sd_offload_tgt=2;
-	    ff_sd_offload=1;
-	    f_read(&msufile, file_buf, 8192, &bytes_read2);
-	    DBG_MSU1 printf("next page dirty (was: %08lx), loaded page2 (start now: ", msu_page2_start);
-	    msu_page2_start = msu_page1_start + msu_page_size;
-	    DBG_MSU1 printf("%08lx)\n", msu_page2_start);
-	  }
-	} else if (msu_offset >= msu_page2_start && msu_offset <= msu_page2_start + msu_page_size) {
-	  DBG_MSU1 printf("inside page2, new offset: %08lx\n", 0x2000 + msu_offset-msu_page2_start);
-	  msu_reset(0x2000 + msu_offset - msu_page2_start);
-	  if(!(msu_page1_start == msu_page2_start + msu_page_size)) {
-	    set_msu_addr(0x0);
-	    sd_offload_tgt=2;
-	    ff_sd_offload=1;
-	    f_read(&msufile, file_buf, 8192, &bytes_read2);
-	    DBG_MSU1 printf("next page dirty (was: %08lx), loaded page1 (start now: ", msu_page1_start);
-	    msu_page1_start = msu_page2_start + msu_page_size;
-	    DBG_MSU1 printf("%08lx)\n", msu_page1_start);
-	  }
-	} else printf("!!!WATWATWAT!!!\n");
-      }
-      /* clear bank bit to mask bank reset artifact */
-      fpga_status_now &= ~0x2000;
-      fpga_status_prev &= ~0x2000;
-      /* clear busy bit */
-      set_msu_status(0x00, 0x10);
+      prepare_data(msu_offset);
     }
 
     if(fpga_status_now & 0x0001) {
       if(fpga_status_now & 0x0004) {
-	msu_repeat = 1;
-	set_msu_status(0x04, 0x01); /* set bit 2, reset bit 0 */
-	DBG_MSU1 printf("Repeat set!\n");
+        msu_repeat = 1;
+        set_msu_status(0x04, 0x01); /* set bit 2, reset bit 0 */
+        DBG_MSU1 printf("Repeat set!\n");
       } else {
-	msu_repeat = 0;
-	set_msu_status(0x00, 0x05); /* set no bits, reset bit 0+2 */
-	DBG_MSU1 printf("Repeat clear!\n");
+        msu_repeat = 0;
+        set_msu_status(0x00, 0x05); /* set no bits, reset bit 0+2 */
+        DBG_MSU1 printf("Repeat clear!\n");
       }
 
       if(fpga_status_now & 0x0002) {
-	DBG_MSU1 printf("PLAY!\n");
-	set_msu_status(0x02, 0x01); /* set bit 0, reset bit 1 */
-	dac_play();
+        DBG_MSU1 printf("PLAY!\n");
+        set_msu_status(0x02, 0x01); /* set bit 0, reset bit 1 */
+        dac_play();
       } else {
-	DBG_MSU1 printf("PAUSE!\n");
-	set_msu_status(0x00, 0x03); /* set no bits, reset bit 1+0 */
-	dac_pause();
+        DBG_MSU1 printf("PAUSE!\n");
+        set_msu_status(0x00, 0x03); /* set no bits, reset bit 1+0 */
+        dac_pause();
       }
     }
 
     fpga_status_prev = fpga_status_now;
 
     /* handle loop / end */
-    if(bytes_read < MSU_DAC_BUFSIZE / 2) {
+    if(msu_audio_bytes_read < MSU_DAC_BUFSIZE / 2) {
       ff_sd_offload=0;
       sd_offload=0;
       if(msu_repeat) {
-	DBG_MSU1 printf("loop\n");
-	ff_sd_offload=1;
-	sd_offload_tgt=1;
-	f_lseek(&file_handle, 8L+msu_loop_point*4);
-	ff_sd_offload=1;
-	sd_offload_tgt=1;
-	f_read(&file_handle, file_buf, (MSU_DAC_BUFSIZE / 2) - bytes_read, &bytes_read);
+        DBG_MSU1 printf("loop\n");
+        ff_sd_offload=1;
+        sd_offload_tgt=1;
+        f_lseek(&file_handle, 8L+msu_loop_point*4);
+        ff_sd_offload=1;
+        sd_offload_tgt=1;
+        f_read(&file_handle, file_buf, (MSU_DAC_BUFSIZE / 2) - msu_audio_bytes_read, &msu_audio_bytes_read);
       } else {
-	set_msu_status(0x00, 0x02); /* clear play bit */
-	dac_pause();
+        set_msu_status(0x00, 0x02); /* clear play bit */
+        dac_pause();
       }
-      bytes_read = MSU_DAC_BUFSIZE;
-    }
-    if(msu1_check_reset()) {
-      f_close(&msufile);
-      f_close(&file_handle);
-      return 1;
+      msu_audio_bytes_read = MSU_DAC_BUFSIZE;
     }
   }
+  f_close(&file_handle);
+  DBG_MSU1 printf("Reset ");
+  if(msu_res == MSU_RESET_LONG) {
+    f_close(&msufile);
+    DBG_MSU1 printf("to menu\n");
+    return 1;
+  }
+  DBG_MSU1 printf("game\n");
+  return 0;
 }
 /* END OF MSU1 STUFF */

src/sdnative.c

@@ -12,6 +12,7 @@
 #include "fileops.h"
 #include "bits.h"
 #include "fpga_spi.h"
+#include "memory.h"
 
 #define MAX_CARDS 1
 
@@ -112,6 +113,7 @@ uint8_t cmd[6]={0,0,0,0,0,0};
 uint8_t rsp[17];
 uint8_t csd[17];
 uint8_t cid[17];
+diskinfo0_t di;
 uint8_t ccs=0;
 uint32_t rca;
 
@@ -360,7 +362,7 @@ int send_command_fast(uint8_t* cmd, uint8_t* rsp, uint8_t* buf){
     default:
       rsplen = 6;
   }
-  if(dat && (buf==NULL)) {
+  if(dat && (buf==NULL) && !sd_offload) {
     printf("send_command_fast error: buf is null but data transfer expected.\n");
     return 0;
   }
@@ -387,7 +389,7 @@ int send_command_fast(uint8_t* cmd, uint8_t* rsp, uint8_t* buf){
   BITBAND(SD_CMDREG->FIODIR, SD_CMDPIN) = 0;
 
   if(rsplen) {
-    uint32_t timeout=2000000;
+    uint32_t timeout=200000;
     /* wait for response */
     while((BITBAND(SD_CMDREG->FIOPIN, SD_CMDPIN)) && --timeout) {
       wiggle_fast_neg1();
@@ -466,8 +468,8 @@ int send_command_fast(uint8_t* cmd, uint8_t* rsp, uint8_t* buf){
       while((BITBAND(SD_DAT0REG->FIOPIN, SD_DAT0PIN)) && --timeout) {
         wiggle_fast_neg1();
       }
-//printf("%ld\n", timeout);
-      DBG_SD if(!timeout) printf("timed out!\n");
+// printf("%ld\n", timeout);
+      if(!timeout) printf("timed out!\n");
       wiggle_fast_neg1(); /* eat the start bit */
       if(sd_offload) {
         if(sd_offload_partial) {
@@ -855,10 +857,38 @@ void write_block(uint32_t address, uint8_t* buf) {
   }
 }
 
+/* send STOP_TRANSMISSION after multiple block write
+ * and reset during_blocktrans status */
+
+void flush_write(void) {
+  cmd_fast(STOP_TRANSMISSION, 0, 0x61, NULL, rsp);
+  wait_busy();
+  during_blocktrans = TRANS_NONE;
+}
+
 //
 // Public functions
 //
 
+DRESULT sdn_ioctl(BYTE drv, BYTE cmd, void *buffer) {
+  DRESULT res;
+  if(drv >= MAX_CARDS) {
+    res = STA_NOINIT|STA_NODISK;
+  } else {
+    switch(cmd) {
+      case CTRL_SYNC:
+        flush_write();
+        res = RES_OK;
+        break;
+
+      default:
+        res = RES_PARERR;
+    }
+  }
+  return res;
+}
+DRESULT disk_ioctl(BYTE drv, BYTE cmd, void *buffer) __attribute__ ((weak, alias("sdn_ioctl")));
+
 DRESULT sdn_read(BYTE drv, BYTE *buffer, DWORD sector, BYTE count) {
   uint8_t sec;
   if(drv >= MAX_CARDS) {
@@ -874,7 +904,7 @@ DRESULT sdn_read(BYTE drv, BYTE *buffer, DWORD sector, BYTE count) {
 }
 DRESULT disk_read(BYTE drv, BYTE *buffer, DWORD sector, BYTE count) __attribute__ ((weak, alias("sdn_read")));
 
-DRESULT sdn_initialize(BYTE drv) {
+DSTATUS sdn_initialize(BYTE drv) {
 
   uint8_t rsp[17]; /* space for response */
   int rsplen;
@@ -929,6 +959,7 @@ DRESULT sdn_initialize(BYTE drv) {
 
   /* record CSD for getinfo */
   cmd_slow(SEND_CSD, rca, 0, NULL, csd);
+  sdn_getinfo(drv, 0, &di);
 
   /* record CID */
   cmd_slow(SEND_CID, rca, 0, NULL, cid);
@@ -971,6 +1002,7 @@ void sdn_init(void) {
   BITBAND(SD_CLKREG->FIODIR, SD_CLKPIN) = 1;
   BITBAND(SD_CMDREG->FIODIR, SD_CMDPIN) = 1;
   BITBAND(SD_CMDREG->FIOPIN, SD_CMDPIN) = 1;
+  LPC_PINCON->PINMODE0 &= ~(BV(14) | BV(15));
   LPC_GPIO2->FIOPIN0 = 0x00;
   LPC_GPIO2->FIOMASK0 = ~0xf;
 }
@@ -1057,3 +1089,55 @@ void sdn_changed() {
   }
 }
 
+/* measure sd access time */
+void sdn_gettacc(uint32_t *tacc_max, uint32_t *tacc_avg) {
+  uint32_t sec1 = 0;
+  uint32_t sec2 = 0;
+  uint32_t time, time_max = 0;
+  uint32_t time_avg = 0LL;
+  uint32_t numread = 16384;
+  int i;
+  int sec_step = di.sectorcount / numread - 1;
+  if(disk_state == DISK_REMOVED) return;
+  sdn_checkinit(0);
+  for (i=0; i < 128; i++) {
+    sd_offload_tgt=2;
+    sd_offload=1;
+    sdn_read(0, NULL, 0, 1);
+    sd_offload_tgt=2;
+    sd_offload=1;
+    sdn_read(0, NULL, i*sec_step, 1);
+  }
+  for (i=0; i < numread && sram_readbyte(SRAM_CMD_ADDR) != 0x00 && disk_state != DISK_REMOVED; i++) {
+  /* reset timer */
+    LPC_RIT->RICTRL = 0;
+    sd_offload_tgt=2;
+    sd_offload=1;
+    sdn_read(0, NULL, sec1, 2);
+    sec1 += 2;
+  /* start timer */
+    LPC_RIT->RICOUNTER = 0;
+    LPC_RIT->RICTRL = BV(RITEN);
+    sd_offload_tgt=2;
+    sd_offload=1;
+    sdn_read(0, NULL, sec2, 1);
+  /* read timer */
+    time = LPC_RIT->RICOUNTER;
+/*    sd_offload_tgt=2;
+    sd_offload=1;
+    sdn_read(0, NULL, sec2, 15);*/
+    time_avg += time/16;
+    if(time > time_max) {
+      time_max = time;
+    }
+    sec2 += sec_step;
+  }
+  time_avg = time_avg / (i+1) * 16;
+  sd_offload=0;
+  LPC_RIT->RICTRL = 0;
+  if(disk_state != DISK_REMOVED) {
+    *tacc_max = time_max/(CONFIG_CPU_FREQUENCY / 1000000)-114;
+    *tacc_avg = time_avg/(CONFIG_CPU_FREQUENCY / 1000000)-114;
+  }
+}
+

src/sdnative.h

@@ -22,9 +22,10 @@ DSTATUS sdn_initialize(BYTE drv);
 DRESULT sdn_read(BYTE drv, BYTE *buffer, DWORD sector, BYTE count);
 DRESULT sdn_write(BYTE drv, const BYTE *buffer, DWORD sector, BYTE count);
 DRESULT sdn_getinfo(BYTE drv, BYTE page, void *buffer);
+DRESULT sdn_ioctl(BYTE drv, BYTE cmd, void *buffer);
 
 void    sdn_changed(void);
 uint8_t* sdn_getcid(void);
-
+void    sdn_gettacc(uint32_t *tacc_max, uint32_t *tacc_avg);
 #endif
 

src/smc.c

@@ -94,6 +94,7 @@ void smc_id(snes_romprops_t* props) {
           props->romsize_bytes = 0x100000;
           props->expramsize_bytes = 0;
           props->mapper_id = 3; /* BS-X Memory Map */
+          props->region = 0; /* BS-X only existed in Japan */
           return;
         }
       }
@@ -186,7 +187,14 @@ void smc_id(snes_romprops_t* props) {
       }
   }
   if(header->romsize == 0 || header->romsize > 13) {
-    header->romsize = 13;
+    props->romsize_bytes = 1024;
+    header->romsize = 0;
+    if(file_handle.fsize >= 1024) {
+      while(props->romsize_bytes < file_handle.fsize-1) {
+        header->romsize++;
+        props->romsize_bytes <<= 1;
+      }
+    }
   }
   props->ramsize_bytes = (uint32_t)1024 << header->ramsize;
   props->romsize_bytes = (uint32_t)1024 << header->romsize;

src/snes.c

@@ -44,10 +44,11 @@ uint32_t saveram_crc, saveram_crc_old;
 extern snes_romprops_t romprops;
 
 volatile int reset_changed;
+volatile int reset_pressed;
 
 void prepare_reset() {
   snes_reset(1);
-  delay_ms(1);
+  delay_ms(SNES_RESET_PULSELEN_MS);
   if(romprops.ramsize_bytes && fpga_test() == FPGA_TEST_TOKEN) {
     writeled(1);
     save_sram(file_lfn, romprops.ramsize_bytes, SRAM_SAVE_ADDR);
@@ -70,6 +71,12 @@ void snes_init() {
   snes_reset(1);
 }
 
+void snes_reset_pulse() {
+  snes_reset(1);
+  delay_ms(SNES_RESET_PULSELEN_MS);
+  snes_reset(0);
+}
+
 /*
  * sets the SNES reset state.
  *
@@ -128,7 +135,7 @@ void snes_main_loop() {
       writeled(1);
       save_sram(file_lfn, romprops.ramsize_bytes, SRAM_SAVE_ADDR);
       didnotsave=0;
-      writeled(0);
+      writeled(1);
     }
     saveram_crc_old = saveram_crc;
   }

src/snes.h

@@ -30,15 +30,21 @@
 #define SNES_CMD_LOADROM   (1)
 #define SNES_CMD_SETRTC    (2)
 #define SNES_CMD_SYSINFO   (3)
+#define SNES_CMD_LOADLAST  (4)
+#define SNES_CMD_LOADSPC   (5)
+#define SNES_CMD_RESET     (6)
 
-#define MENU_ERR_OK		(0)
-#define MENU_ERR_NODSP	(1)
-#define MENU_ERR_NOBSX	(2)
+#define MENU_ERR_OK     (0)
+#define MENU_ERR_NODSP  (1)
+#define MENU_ERR_NOBSX  (2)
+
+#define SNES_RESET_PULSELEN_MS	(1)
 
 uint8_t crc_valid;
 
 void prepare_reset(void);
 void snes_init(void);
+void snes_reset_pulse(void);
 void snes_reset(int state);
 uint8_t get_snes_reset(void);
 void snes_main_loop(void);

src/sort.c

@@ -50,13 +50,18 @@ int sort_cmp_elem(const void* elem1, const void* elem2) {
   if (!(el1 & 0x80000000) && (el2 & 0x80000000)) {
     return 1;
   }
-/*  
-  uint16_t cmp_i;
-  for(cmp_i=0; cmp_i<8 && sort_long1[cmp_i] == sort_long2[cmp_i]; cmp_i++);
-  if(cmp_i==8) {
-    return 0;
+
+  if (*sort_str1 == '.') return -1;
+  if (*sort_str2 == '.') return 1;
+
+  /* Do not compare trailing slashes of directory names */
+  if ((el1 & 0x80000000) && (el2 & 0x80000000)) {
+    char *str1_slash = strrchr(sort_str1, '/');
+    char *str2_slash = strrchr(sort_str2, '/');
+    if(str1_slash != NULL) *str1_slash = 0;
+    if(str2_slash != NULL) *str2_slash = 0;
   }
-  return sort_long1[cmp_i]-sort_long2[cmp_i]; */
+
   return strcasecmp(sort_str1, sort_str2);
 }
 

src/spi.c

@@ -36,21 +36,13 @@ void spi_preinit() {
   BITBAND(LPC_SC->SSP_PCLKREG, SSP_PCLKBIT) = 1;
 }
 
-void spi_init(spi_speed_t speed) {
+void spi_init() {
 
   /* configure data format - 8 bits, SPI, CPOL=0, CPHA=0, 1 clock per bit */
   SSP_REGS->CR0 = (8-1);
 
   /* set clock prescaler */
-  if (speed == SPI_SPEED_FAST) {
-    SSP_REGS->CPSR = SSP_CLK_DIVISOR_FAST;
-  } else if (speed == SPI_SPEED_SLOW) {
-    SSP_REGS->CPSR = SSP_CLK_DIVISOR_SLOW;
-  } else if (speed == SPI_SPEED_FPGA_FAST) {
-    SSP_REGS->CPSR = SSP_CLK_DIVISOR_FPGA_FAST;
-  } else {
-    SSP_REGS->CPSR = SSP_CLK_DIVISOR_FPGA_SLOW;
-  }
+  SSP_REGS->CPSR = SSP_CLK_DIVISOR;
 
   /* Enable SSP */
   SSP_REGS->CR1 = BV(1);
@@ -189,25 +181,3 @@ void spi_rx_block(void *ptr, unsigned int length) {
     SSP_REGS->DMACR = 0;
   }
 }
-
-void spi_set_speed(spi_speed_t speed) {
-  /* Wait until TX fifo is empty */
-  while (!BITBAND(SSP_REGS->SR, 0)) ;
-
-  /* Disable SSP (FIXME: Is this required?) */
-  SSP_REGS->CR1 = 0;
-
-  /* Change clock divisor */
-  if (speed == SPI_SPEED_FAST) {
-    SSP_REGS->CPSR = SSP_CLK_DIVISOR_FAST;
-  } else if (speed == SPI_SPEED_SLOW) {
-    SSP_REGS->CPSR = SSP_CLK_DIVISOR_SLOW;
-  } else if (speed == SPI_SPEED_FPGA_FAST) {
-    SSP_REGS->CPSR = SSP_CLK_DIVISOR_FPGA_FAST;
-  } else {
-    SSP_REGS->CPSR = SSP_CLK_DIVISOR_FPGA_SLOW;
-  }
-
-  /* Enable SSP */
-  SSP_REGS->CR1 = BV(1);
-}

src/spi.h

@@ -42,7 +42,7 @@ typedef enum { SPI_SPEED_FAST, SPI_SPEED_SLOW, SPI_SPEED_FPGA_FAST, SPI_SPEED_FP
 void spi_preinit(void);
 
 /* Initialize SPI interface */
-void spi_init(spi_speed_t speed);
+void spi_init(void);
 
 /* Transmit a single byte */
 void spi_tx_byte(uint8_t data);
@@ -59,9 +59,6 @@ uint8_t spi_rx_byte(void);
 /* Receive a data block */
 void spi_rx_block(void *data, unsigned int length);
 
-/* Switch speed of SPI interface */
-void spi_set_speed(spi_speed_t speed);
-
 /* wait for SPI TX FIFO to become empty */
 void spi_tx_sync(void);
 

src/sysinfo.c

@@ -0,0 +1,127 @@
+#include <arm/NXP/LPC17xx/LPC17xx.h>
+#include <arm/bits.h>
+#include <string.h>
+#include "config.h"
+#include "diskio.h"
+#include "ff.h"
+#include "timer.h"
+#include "uart.h"
+#include "fileops.h"
+#include "memory.h"
+#include "snes.h"
+#include "fpga.h"
+#include "fpga_spi.h"
+#include "cic.h"
+#include "sdnative.h"
+
+#include "sysinfo.h"
+
+static uint32_t sd_tacc_max, sd_tacc_avg;
+
+void sysinfo_loop() {
+  sd_tacc_max = 0;
+  sd_tacc_avg = 0;
+  while(sram_readbyte(SRAM_CMD_ADDR) != 0x00) {
+    write_sysinfo();
+    delay_ms(100);
+  }
+}
+
+void write_sysinfo() {
+  uint32_t sram_addr = SRAM_SYSINFO_ADDR;
+  char linebuf[40];
+  int len;
+  int sd_ok = 0;
+  uint8_t *sd_cid = sdn_getcid();
+  uint32_t sd_tacc_max_int = sd_tacc_max / 1000;
+  uint32_t sd_tacc_max_frac = sd_tacc_max - (sd_tacc_max_int * 1000);
+  uint32_t sd_tacc_avg_int = sd_tacc_avg / 1000;
+  uint32_t sd_tacc_avg_frac = sd_tacc_avg - (sd_tacc_avg_int * 1000);
+  uint16_t numfiles = sram_readshort(SRAM_DB_ADDR+12);
+  uint16_t numdirs = sram_readshort(SRAM_DB_ADDR+14);
+  int32_t sysclk = get_snes_sysclk();
+
+  len = snprintf(linebuf, sizeof(linebuf), "Firmware version: %s", CONFIG_VERSION);
+  sram_writeblock(linebuf, sram_addr, 40);
+  sram_memset(sram_addr+len, 40-len, 0x20);
+  sram_addr += 40;
+  len = snprintf(linebuf, sizeof(linebuf), "                                        ");
+  sram_writeblock(linebuf, sram_addr, 40);
+  sram_memset(sram_addr+len, 40-len, 0x20);
+  sram_addr += 40;
+  if(disk_state == DISK_REMOVED) {
+    sd_tacc_max = 0;
+    sd_tacc_avg = 0;
+    len = snprintf(linebuf, sizeof(linebuf), "                                        ");
+    sram_writeblock(linebuf, sram_addr, 40);
+    sram_memset(sram_addr+len, 40-len, 0x20);
+    sram_addr += 40;
+    len = snprintf(linebuf, sizeof(linebuf), "         *** SD Card removed ***        ");
+    sram_writeblock(linebuf, sram_addr, 40);
+    sram_memset(sram_addr+len, 40-len, 0x20);
+    sram_addr += 40;
+    len = snprintf(linebuf, sizeof(linebuf), "                                        ");
+    sram_writeblock(linebuf, sram_addr, 40);
+    sram_memset(sram_addr+len, 40-len, 0x20);
+    sram_addr += 40;
+    len = snprintf(linebuf, sizeof(linebuf), "                                        ");
+    sram_writeblock(linebuf, sram_addr, 40);
+    sram_memset(sram_addr+len, 40-len, 0x20);
+    sram_addr += 40;
+    sd_ok = 0;
+  } else {
+    len = snprintf(linebuf, sizeof(linebuf), "SD Maker/OEM:    0x%02x, \"%c%c\"", sd_cid[1], sd_cid[2], sd_cid[3]);
+    sram_writeblock(linebuf, sram_addr, 40);
+    sram_memset(sram_addr+len, 40-len, 0x20);
+    sram_addr += 40;
+    len = snprintf(linebuf, sizeof(linebuf), "SD Product Name: \"%c%c%c%c%c\", Rev. %d.%d", sd_cid[4], sd_cid[5], sd_cid[6], sd_cid[7], sd_cid[8], sd_cid[9]>>4, sd_cid[9]&15);
+    sram_writeblock(linebuf, sram_addr, 40);
+    sram_memset(sram_addr+len, 40-len, 0x20);
+    sram_addr += 40;
+    len = snprintf(linebuf, sizeof(linebuf), "SD Serial No.:   %02x%02x%02x%02x, Mfd. %d/%02d", sd_cid[10], sd_cid[11], sd_cid[12], sd_cid[13], 2000+((sd_cid[14]&15)<<4)+(sd_cid[15]>>4), sd_cid[15]&15);
+    sram_writeblock(linebuf, sram_addr, 40);
+    sram_memset(sram_addr+len, 40-len, 0x20);
+    sram_addr += 40;
+    if(sd_tacc_max)
+      len = snprintf(linebuf, sizeof(linebuf), "SD acc. time: %ld.%03ld / %ld.%03ld ms avg/max", sd_tacc_avg_int, sd_tacc_avg_frac, sd_tacc_max_int, sd_tacc_max_frac);
+    else
+      len = snprintf(linebuf, sizeof(linebuf), "SD acc. time: measuring...  ");
+    sram_writeblock(linebuf, sram_addr, 40);
+    sram_memset(sram_addr+len, 40-len, 0x20);
+    sram_addr += 40;
+    sd_ok = 1;
+  }
+  len = snprintf(linebuf, sizeof(linebuf), "                                        ");
+  sram_writeblock(linebuf, sram_addr, 40);
+  sram_memset(sram_addr+len, 40-len, 0x20);
+  sram_addr += 40;
+  len = snprintf(linebuf, sizeof(linebuf), "CIC state: %s", get_cic_statefriendlyname(get_cic_state()));
+  sram_writeblock(linebuf, sram_addr, 40);
+  sram_memset(sram_addr+len, 40-len, 0x20);
+  sram_addr += 40;
+  if(sysclk == -1)
+    len = snprintf(linebuf, sizeof(linebuf), "SNES master clock: measuring...");
+  else
+    len = snprintf(linebuf, sizeof(linebuf), "SNES master clock: %ldHz    ", get_snes_sysclk());
+  sram_writeblock(linebuf, sram_addr, 40);
+  sram_memset(sram_addr+len, 40-len, 0x20);
+  sram_addr += 40;
+  len = snprintf(linebuf, sizeof(linebuf), "                                        ");
+  sram_writeblock(linebuf, sram_addr, 40);
+  sram_memset(sram_addr+len, 40-len, 0x20);
+  sram_addr += 40;
+  len = snprintf(linebuf, sizeof(linebuf), "Database: %d files, %d dirs", numfiles, numdirs);
+  sram_writeblock(linebuf, sram_addr, 40);
+  sram_memset(sram_addr+len, 40-len, 0x20);
+  sram_addr += 40;
+  len = snprintf(linebuf, sizeof(linebuf), "                                        ");
+  sram_writeblock(linebuf, sram_addr, 40);
+  sram_memset(sram_addr+len, 40-len, 0x20);
+  sram_addr += 40;
+  len = snprintf(linebuf, sizeof(linebuf), "                                        ");
+  sram_writeblock(linebuf, sram_addr, 40);
+  sram_memset(sram_addr+len, 40-len, 0x20);
+  sram_hexdump(SRAM_SYSINFO_ADDR, 13*40);
+  if(sysclk != -1 && sd_ok)sdn_gettacc(&sd_tacc_max, &sd_tacc_avg);
+}
+

src/sysinfo.h

@@ -0,0 +1,7 @@
+#ifndef _SYSINFO_H
+#define _SYSINFO_H
+
+void write_sysinfo(void);
+void sysinfo_loop(void);
+
+#endif

src/tests/tests.c

@@ -0,0 +1,262 @@
+/* ___DISCLAIMER___ */
+
+#include <arm/NXP/LPC17xx/LPC17xx.h>
+#include "bits.h"
+#include "config.h"
+#include "uart.h"
+#include "timer.h"
+#include "led.h"
+#include "cli.h"
+#include "fpga.h"
+#include "fpga_spi.h"
+#include "ff.h"
+#include "fileops.h"
+#include "crc32.h"
+#include "diskio.h"
+#include "cic.h"
+#include "rtc.h"
+#include "memory.h"
+#include "snes.h"
+#include "cli.h"
+
+#include "tests.h"
+
+#define PROGRESS	("-\\|/")
+
+int test_sd() {
+  printf("SD test... please insert card\n=============================\n");
+  while(disk_status(0) & (STA_NOINIT|STA_NODISK)) cli_entrycheck();
+
+  file_open((uint8_t*)"/sd2snes/testfile.bin", FA_WRITE | FA_CREATE_ALWAYS);
+  if(file_res) {
+    printf("could not open /sd2snes/testfile.bin: Error %d\n", file_res);
+    printf("FAILED\n\n\n");
+    return FAILED;
+  }
+  uint32_t testval = 0x55AA55AA;
+  uint32_t crc = 0;
+  uint32_t count, blkcount;
+  for(count=0; count < 8192; count++) {
+    for(blkcount=0; blkcount < 512; blkcount++) {
+      file_buf[blkcount] = testval&0xff;
+      crc=crc32_update(crc, testval&0xff);
+      testval ^= (crc * (count + blkcount + 7)) - 1;
+    }
+    file_write();
+  }
+  printf("crc1 = %08lx ", crc);
+  file_close();
+  file_open((uint8_t*)"/sd2snes/testfile.bin", FA_READ);
+  uint32_t crc2 = 0;
+  for(count=0; count < 8192; count++) {
+    file_read();
+    for(blkcount=0; blkcount < 512; blkcount++) {
+      testval = file_buf[blkcount];
+      crc2 = crc32_update(crc2, testval&0xff);
+    }
+  }
+  file_close();
+  printf("crc2 = %08lx ", crc2);
+  if(crc==crc2) {
+    printf("  PASSED\n\n\n");
+    return PASSED;
+  } else {
+    printf("  FAILED\n\n\n");
+    return FAILED;
+  }
+}
+
+int test_cic() {
+  int cic_state = get_cic_state();
+  printf("CIC Test:\n=========\n");
+  printf("Current CIC state: %s\n", get_cic_statename(cic_state));
+  if(cic_state == CIC_FAIL) {
+    printf("CIC reports error, push reset...\n");
+    while((cic_state = get_cic_state()) == CIC_FAIL);
+  }
+  if(cic_state == CIC_OK) {
+    printf("CIC reports OK; no pair mode available. Provoking CIC error...\n");
+    cic_pair(1,1);
+    delay_ms(200);
+    cic_init(0);
+    printf("new CIC state: %s\n", get_cic_statename(get_cic_state()));
+    if(get_cic_state() == CIC_FAIL) {
+      printf("***Please reset SNES***\n");
+      int failcount=2;
+      while(failcount--) {
+        while(get_cic_state() == CIC_FAIL);
+        delay_ms(200);
+      }
+      if(get_cic_state() != CIC_FAIL) {
+        printf("PASSED\n\n\n");
+        return PASSED;
+      }
+      printf("CIC did not recover properly.\nFAILED\n");
+      return FAILED;
+    }
+    printf("FAILED\n\n\n");
+    return FAILED;
+  }
+  if(cic_state == CIC_SCIC) {
+    printf("CIC reports OK; pair mode available. Switching to pair mode...\n");
+    cic_init(1);
+    delay_ms(100);
+    cic_pair(0,0);
+    delay_ms(1000);
+    printf("new CIC state: %s\n", get_cic_statename(cic_state = get_cic_state()));
+    if(get_cic_state() != CIC_PAIR) {
+      printf("FAILED to switch to pair mode!!!\n");
+      return FAILED;
+    }
+  }
+  if(cic_state == CIC_PAIR) {
+    cic_init(1);
+    cic_pair(0,0);
+    printf("cycling modes, observe power LED color\n");
+    for(cic_state = 0; cic_state < 17; cic_state++) {
+      cic_videomode(cic_state & 1);
+      delay_ms(200);
+    }
+  }
+  printf("PASSED\n\n\n");
+  return PASSED;
+}
+
+int test_rtc() {
+  struct tm time;
+  printf("RTC Test\n========\n");
+  printf("setting clock to 2011-01-01 00:00:00\n");
+  set_bcdtime(0x20110101000000LL);
+  printf("waiting 5 seconds\n");
+  delay_ms(5000);
+//  uint64_t newtime = get_bcdtime();
+  printf("new time: ");
+  read_rtc(&time);
+  printtime(&time);
+  if((get_bcdtime() & 0xffffffffffffff) >= 0x20110101000004LL) {
+    printf("PASSED\n\n\n");
+    return PASSED;
+  } else printf("FAILED\n\n\n");
+  return FAILED;
+}
+
+int test_fpga() {
+  printf("FPGA test\n=========\n");
+  printf("configuring fpga...\n");
+  fpga_pgm((uint8_t*)"/sd2snes/test.bit");
+  printf("basic communication test...");
+  if(fpga_test() != FPGA_TEST_TOKEN) {
+    printf("FAILED\n\n\n");
+    return FAILED;
+  } else printf("PASSED\n\n\n");
+  return PASSED;
+}
+
+int test_mem() {
+  printf("RAM test\n========\n");
+  printf("Testing RAM0 (128Mbit) - writing RAM -");
+  uint32_t addr;
+  snes_reset(1);
+  fpga_select_mem(0);
+  set_mcu_addr(0);
+  FPGA_DESELECT();
+  delay_ms(1);
+  FPGA_SELECT();
+  delay_ms(1);
+  FPGA_TX_BYTE(0x98);
+  for(addr=0; addr < 16777216; addr++) {
+    if((addr&0xffff) == 0)printf("\x8%c", PROGRESS[(addr>>16)&3]);
+    FPGA_TX_BYTE((addr)+(addr>>8)+(addr>>16));
+    FPGA_WAIT_RDY();
+  }
+  FPGA_DESELECT();
+  printf(" verifying RAM -");
+  uint8_t data, expect, error=0, failed=0;
+  set_mcu_addr(0);
+  FPGA_SELECT();
+  FPGA_TX_BYTE(0x88);
+  for(addr=0; addr < 16777216; addr++) {
+    if((addr&0xffff) == 0)printf("\x8%c", PROGRESS[(addr>>16)&3]);
+    FPGA_WAIT_RDY();
+    data = FPGA_RX_BYTE();
+    expect = (addr)+(addr>>8)+(addr>>16);
+    if(data != expect) {
+      printf("error @0x%06lx: expected 0x%02x, got 0x%02x\n", addr, expect, data);
+      error++;
+      failed=1;
+      if(error>20) {
+        printf("too many errors, aborting\n");
+        break;
+      }
+    }
+  }
+  FPGA_DESELECT();
+  if(error) printf("RAM0 FAILED\n");
+  else printf("RAM0 PASSED\n");
+  printf("Testing RAM1 (4Mbit) - writing RAM - ");
+  snes_reset(1);
+  fpga_select_mem(1);
+  for(addr=0; addr < 524288; addr++) {
+    sram_writebyte((addr)+(addr>>8)+(addr>>16), addr);
+  }
+  printf("verifying RAM...");
+  error = 0;
+  for(addr=0; addr < 524288; addr++) {
+    data = sram_readbyte(addr);
+    expect = (addr)+(addr>>8)+(addr>>16);
+    if(data != expect) {
+      printf("error @0x%05lx: expected 0x%02x, got 0x%02x\n", addr, expect, data);
+      error++;
+      failed=1;
+      if(error>20) {
+        printf("too many errors, aborting\n");
+        break;
+      }
+    }
+  }
+  if(error) printf("RAM1 FAILED\n\n\n");
+  else printf("RAM1 PASSED\n\n\n");
+  if(failed) return FAILED;
+  return PASSED;
+}
+
+int test_clk() {
+  uint32_t sysclk[4];
+  int32_t diff, max_diff = 0;
+  int i, error=0;
+  printf("sysclk test\n===========\n");
+  printf("measuring SNES clock...\n");
+  for(i=0; i<4; i++) {
+    sysclk[i]=get_snes_sysclk();
+    if(sysclk[i] < 21000000 || sysclk[i] > 22000000) error = 1;
+    printf("%lu Hz ", sysclk[i]);
+    if(i) {
+      diff = sysclk[i] - sysclk[i-1];
+      if(diff < 0) diff = -diff;
+      if(diff > max_diff) max_diff = diff;
+      printf("diff = %ld  max = %ld", diff, max_diff);
+    }
+    printf("\n");
+    delay_ms(1010);
+  }
+  if(error) {
+    printf("clock frequency out of range!\n");
+  }
+  if(diff > 1000000) {
+    printf("clock variation too great!\n");
+    error = 1;
+  }
+  printf("   CPUCLK: %lu\n", get_snes_cpuclk());
+  printf("  READCLK: %lu\n", get_snes_readclk());
+  printf(" WRITECLK: %lu\n", get_snes_writeclk());
+  printf("  PARDCLK: %lu\n", get_snes_pardclk());
+  printf("  PAWRCLK: %lu\n", get_snes_pawrclk());
+  printf("  REFRCLK: %lu\n", get_snes_refreshclk());
+  printf("ROMSELCLK: %lu\n", get_snes_romselclk());
+  if(error) {
+    printf("FAILED\n\n\n");
+    return FAILED;
+  }
+  printf("PASSED\n\n\n");
+  return PASSED;
+}

src/timer.c

@@ -1,6 +1,7 @@
 /* ___INGO___ */
 
 #include <arm/NXP/LPC17xx/LPC17xx.h>
+#include "power.h"
 #include "bits.h"
 #include "config.h"
 #include "timer.h"
@@ -9,14 +10,11 @@
 #include "sdnative.h"
 #include "snes.h"
 
-/* bit definitions */
-#define RITINT 0
-#define RITEN  3
-
-#define PCRIT 16
 
 extern volatile int sd_changed;
 extern volatile int reset_changed;
+extern volatile int reset_pressed;
+
 volatile tick_t ticks;
 volatile int wokefromrit;
 
@@ -35,6 +33,7 @@ void SysTick_Handler(void) {
   }
   reset_state = (reset_state << 1) | get_snes_reset() | 0xe000;
   if((reset_state == 0xf000) || (reset_state == 0xefff)) {
+    reset_pressed = (reset_state == 0xf000);
     reset_changed = 1;
   }
   sdn_changed();

src/timer.h

@@ -8,6 +8,10 @@ typedef unsigned int tick_t;
 extern volatile tick_t ticks;
 #define HZ 100
 
+/* bit definitions */
+#define RITINT 0
+#define RITEN  3
+
 /**
  * getticks - return the current system tick count
  *

src/utils/genhdr.c

@@ -73,7 +73,7 @@ int main(int argc, char **argv) {
     return 1;
   }
   char *remaining = NULL;
-  uint32_t version = (uint32_t)strtol(argv[3], &remaining, 10);
+  uint32_t version = (uint32_t)strtol(argv[3], &remaining, 0);
   if(*remaining) {
     printf("could not parse version number (remaining portion: %s)\n", remaining);
     fclose(f);

utils/gentilemap.c

@@ -3,21 +3,18 @@
 
 int main(void) {
 uint16_t tile=256;
-uint16_t pad=256;
 	int i,j;
 	FILE *out;
 	if((out=fopen("tilemap", "wb"))==NULL) {
 		perror("Could not open output file 'tilemap'");
 		return 1;
 	}
-	for(i=0; i<8; i++) {
-		for(j=0; j<26; j++)	{
+	for(i=0; i<7; i++) {
+		for(j=0; j<32; j++)	{
 			fwrite(&tile, 2, 1, out);
-			tile++;			
-		}
-		for(j=26; j<32; j++) {
-			fwrite(&pad, 2, 1, out);
+			tile++;
 		}
 	}
 	fclose(out);
+	return 0;
 }

utils/palremap.c

@@ -1,6 +1,28 @@
 #include <stdio.h>
 #include <stdint.h>
 
+/* Mapping table. This table specifies the target index in the
+   output file. */
+int map_idx [120] = {
+	0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
+	0x2c, 0x2d, 0x2e, 0x2f, 0x34, 0x35, 0x36, 0x37,
+	0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
+	0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b,
+	0x4c, 0x4d, 0x4e, 0x4f, 0x54, 0x55, 0x56, 0x57,
+	0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
+	0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b,
+	0x6c, 0x6d, 0x6e, 0x6f, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
+	0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
+	0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
+	0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
+	0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
+	0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+	0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf
+};
+
+
+/* remap colors in a 256 color bitmap */
 int main(int argc, char **argv) {
 	if(argc<3) {
 		fprintf(stderr, "Usage: %s <infile> <outfile>\n", argv[0]);
@@ -18,28 +40,28 @@ int main(int argc, char **argv) {
 	while(1) {
 		uint8_t c=fgetc(in);
 		if(feof(in))break;
-//		if(c>=1 && c<=48) {
-//			c+=207;
-//		}
-
-//		shift palette by 32
-//		keep color 0
-//		leave room for sprite pal 3 and 7 (176-192 and 240-255)
-		if(c) {
-			if(c>224) { // move upper colors to start
-				c-=224;
-			} else if(c==224) { // remap 224 to 32, not 0
-				c=32;
-			} else {	// shift colors, leave gap 176-191
-					// relocate 0xd0-0xdf (which would be
-					// remapped to 0x00-0x0f) to 0xb0-0xbf
-				c+=32;
-				if(c>=176) {
-					c+=16;
-					if(c<16) c=0xb0+c;
-				}
-			}
-		}
+/* new palette mapping:
+   0-31: fonts, tile stuff
+   32-35: 4bit palette 2
+   36-47: logo
+   48-51: 4bit palette 3
+   52-63: logo
+   64-67: 4bit palette 4
+   68-79: logo
+   80-83: 4bit palette 5
+   84-95: logo
+   96-99: 4bit palette 6
+   100-111: logo
+   112-115: 4bit palette 7
+   116-175: logo
+   176-191: sprites (misc overlays, cursor, etc.)
+   192-255: sprites (logo gfx overlays)
+*/
+		if(c < 120) {
+			c = map_idx[c];
+		} else {
+			c = 0;
+                }
 		fputc(c, out);
 	}
 	fclose(out);

utils/palreorder.c

@@ -1,5 +1,117 @@
 #include <stdio.h>
 #include <stdint.h>
+/* reorder entries in a palette file */
+/* map action types:
+   MA_NONE: do not map anything to this entry (constant 0000)
+   MA_LOC:  map indexed entry of local palette to this entry
+   MA_SRC:  map indexed entry of input palette to this entry
+*/
+enum map_action_type { MA_NONE = 0, MA_LOC, MA_SRC };
+
+int map_action [256] = {
+/* 0-3:   local entries (2-bit text palette 0 + 4-bit text palette 0)
+   4-7:   local entries (2-bit text palette 1)
+   8-11:  local entries (2-bit text palette 2)
+   12-15: local entries (2-bit text palette 3)
+   16-19: local entries (4-bit text palette 1 - 2-bit palette 4 not used)
+   20-23: local entries (2-bit text palette 5)
+   24-27: local entries (2-bit text palette 6)
+   28-31: local entries (2-bit text palette 7) */
+	MA_NONE, MA_LOC, MA_LOC, MA_LOC, MA_LOC, MA_LOC, MA_LOC, MA_LOC,
+	MA_LOC, MA_LOC, MA_LOC, MA_LOC,	MA_LOC, MA_LOC, MA_LOC, MA_LOC,
+	MA_LOC, MA_LOC, MA_LOC, MA_LOC,	MA_LOC, MA_LOC, MA_LOC, MA_LOC,
+	MA_LOC, MA_LOC, MA_LOC, MA_LOC,	MA_LOC, MA_LOC, MA_LOC, MA_LOC,
+/* 32-35: local entries (4-bit text palette 2)
+   36-47: logo gfx */
+	MA_LOC, MA_LOC, MA_LOC, MA_LOC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+/* 48-51: local entries (4-bit text palette 3)
+   52-63: logo */
+	MA_LOC, MA_LOC, MA_LOC, MA_LOC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+/* 48-51: local entries (4-bit text palette 4 - 4-bit only spare palette)
+   52-63: logo */
+	MA_LOC, MA_LOC, MA_LOC, MA_LOC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+/* 48-51: local entries (4-bit text palette 5)
+   52-63: logo */
+	MA_LOC, MA_LOC, MA_LOC, MA_LOC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+/* 48-51: local entries (4-bit text palette 6)
+   52-63: logo */
+	MA_LOC, MA_LOC, MA_LOC, MA_LOC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+/* 48-51: local entries (4-bit text palette 7)
+   52-175: logo */
+	MA_LOC, MA_LOC, MA_LOC, MA_LOC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+/* 176-191: sprites (reserved) */
+	MA_NONE, MA_NONE, MA_NONE, MA_NONE, MA_NONE, MA_NONE, MA_NONE, MA_NONE,
+	MA_NONE, MA_NONE, MA_NONE, MA_NONE, MA_NONE, MA_NONE, MA_NONE, MA_NONE,
+/* 192-255: sprites (logo gfx overlays) */
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC,
+	MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC, MA_SRC
+};
+
+/* Mapping table. This table specifies the source index in either the
+   source palette file or the local palette, depending on the action
+   specified in the table above. */
+int map_idx [256] = {
+	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+        0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+	0x04, 0x05, 0x06, 0x07, 0x14, 0x15, 0x16, 0x17,
+	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+	0x08, 0x09, 0x0a, 0x0b, 0x00, 0x01, 0x02, 0x03,
+        0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
+        0x0c, 0x0d, 0x0e, 0x0f, 0x0c, 0x0d, 0x0e, 0x0f,
+	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+	0x10, 0x11, 0x12, 0x13, 0x18, 0x19, 0x1a, 0x1b,
+	0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
+	0x14, 0x15, 0x16, 0x17, 0x24, 0x25, 0x26, 0x27,
+	0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
+	0x18, 0x19, 0x1a, 0x1b, 0x30, 0x31, 0x32, 0x33,
+	0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
+	0x1c, 0x1d, 0x1e, 0x1f, 0x3c, 0x3d, 0x3e, 0x3f,
+	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
+	0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
+	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
+	0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
+	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+	0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
+	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
+	0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
+	0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
+	0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
+	0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
+	0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
+	0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+	0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
+};
+
+/* local palette. Basically a list of 2-bit palettes that is mirrored
+   to the 4-bit palette locations by the map above.
+   Palettes 4-7 are currently unused. */
+uint16_t local_palette [32] = {
+	0x0000, 0x7fff, 0x18c6, 0x6318, 0x0000, 0x43ff, 0x0cc6, 0x3318,
+	0x0000, 0x43f0, 0x0cc3, 0x330c, 0x7c1f, 0x7c1f, 0x7c1f, 0x7c1f,
+	0x7c1f, 0x7c1f, 0x7c1f, 0x7c1f, 0x7c1f, 0x7c1f, 0x7c1f, 0x7c1f,
+	0x7c1f, 0x7c1f, 0x7c1f, 0x7c1f, 0x7c1f, 0x7c1f, 0x7c1f, 0x7c1f
+};
 
 int main(int argc, char **argv) {
 	if(argc<3) {
@@ -17,27 +129,22 @@ int main(int argc, char **argv) {
 	}
 	uint16_t palette_src[256];
 	uint16_t palette_tgt[256];
-	uint16_t i=0;
+	uint16_t palette_val;
+	int tgt_index;
 	fread(palette_src, 2, 256, in);
-	for(i=0; i<256; i++) {
-		uint8_t tgt_index=i;
-                if(tgt_index) {
-                        if(tgt_index>224) { // move upper colors to start
-                                tgt_index-=224;
-                        } else if(tgt_index==224) { // remap 224 to 32, not 0
-                                tgt_index=32;
-                        } else {        // shift colors, leave gap 176-191
-                                        // relocate 0xd0-0xdf (which would be
-                                        // remapped to 0x00-0x0f) to 0xb0-0xbf
-                                tgt_index+=32;
-                                if(tgt_index>=176) {
-                                        tgt_index+=16;
-                                        if(tgt_index<16) tgt_index=0xb0+tgt_index;
-                                }
-                        }
-                }
-
-		palette_tgt[tgt_index] = palette_src[i];
+	for(tgt_index=0; tgt_index<256; tgt_index++) {
+		switch(map_action[tgt_index]) {
+			case MA_LOC:
+				palette_val = local_palette[map_idx[tgt_index]];
+				break;
+			case MA_SRC:
+				palette_val = palette_src[map_idx[tgt_index]];
+				break;
+			case MA_NONE:
+			default:
+				palette_val = 0x7c1f;
+		}
+		palette_tgt[tgt_index] = palette_val;
 	}
 	fwrite(palette_tgt, 2, 256, out);
 	fclose(out);

verilog/sd2snes/address.v

@@ -37,7 +37,12 @@ module address(
   output dspx_enable,
   output dspx_dp_enable,
   output dspx_a0,
-  output r213f_enable
+  output r213f_enable,
+  output snescmd_rd_enable,
+  output snescmd_wr_enable,
+  input [8:0] bs_page_offset,
+  input [9:0] bs_page,
+  input bs_page_enable
 );
 
 parameter [2:0]
@@ -76,7 +81,7 @@ assign IS_SAVERAM = SAVERAM_MASK[0]
                         || MAPPER == 3'b110
                         || MAPPER == 3'b111)
                       ? (!SNES_ADDR[22]
-                         & &SNES_ADDR[21:20]
+                         & SNES_ADDR[21]
                          & &SNES_ADDR[14:13]
                          & !SNES_ADDR[15]
                         )
@@ -141,7 +146,9 @@ assign SRAM_SNES_ADDR = ((MAPPER == 3'b000)
                             ? 24'hE00000 + {SNES_ADDR[18:16], SNES_ADDR[11:0]}
                             : IS_WRITABLE
                               ? (24'h400000 + (SNES_ADDR & 24'h07FFFF))
-                              : ((bsx_regs[7] && SNES_ADDR[23:21] == 3'b000)
+                            : bs_page_enable
+									   ? (24'h900000 + {bs_page,bs_page_offset})
+								    :((bsx_regs[7] && SNES_ADDR[23:21] == 3'b000)
                                  |(bsx_regs[8] && SNES_ADDR[23:21] == 3'b100))
                                  ?(24'h800000
                                    + ({1'b0, SNES_ADDR[23:16], SNES_ADDR[14:0]}
@@ -178,7 +185,7 @@ assign SRAM_SNES_ADDR = ((MAPPER == 3'b000)
                              ? 24'hFF0000 + ((SNES_ADDR[14:0] - 15'h6000)
                                              & SAVERAM_MASK)
                              : (({1'b0, SNES_ADDR[22:0]} & ROM_MASK)
-                                + 24'hE00000)
+                                + 24'hC00000)
                             )
                            : 24'b0);
 
@@ -187,14 +194,19 @@ assign ROM_ADDR = SRAM_SNES_ADDR;
 assign ROM_SEL = 1'b0;
 
 assign msu_enable_w = featurebits[FEAT_MSU1] & (!SNES_ADDR[22] && ((SNES_ADDR[15:0] & 16'hfff8) == 16'h2000));
-reg [5:0] msu_enable_r;
-initial msu_enable_r = 6'b000000;
-always @(posedge CLK) msu_enable_r <= {msu_enable_r[4:0], msu_enable_w};
-assign msu_enable = &msu_enable_r[5:2];
+//reg [5:0] msu_enable_r;
+//initial msu_enable_r = 6'b000000;
+//always @(posedge CLK) msu_enable_r <= {msu_enable_r[4:0], msu_enable_w};
+assign msu_enable = msu_enable_w /*&msu_enable_r[5:2]*/;
 
 assign use_bsx = (MAPPER == 3'b011);
 
-assign srtc_enable = featurebits[FEAT_SRTC] & (!SNES_ADDR[22] && ((SNES_ADDR[15:0] & 16'hfffe) == 16'h2800));
+assign srtc_enable_w = (!SNES_ADDR[22] && ((SNES_ADDR[15:0] & 16'hfffe) == 16'h2800));
+//reg [5:0] srtc_enable_r;
+//initial srtc_enable_r = 6'b000000;
+//always @(posedge CLK) srtc_enable_r <= {srtc_enable_r[4:0], srtc_enable_w};
+assign srtc_enable = srtc_enable_w /*&srtc_enable_r[3:0]*/ & featurebits[FEAT_SRTC];
+
 
 // DSP1 LoROM: DR=30-3f:8000-bfff; SR=30-3f:c000-ffff
 //          or DR=60-6f:0000-3fff; SR=60-6f:4000-7fff
@@ -228,15 +240,27 @@ assign dspx_a0 = featurebits[FEAT_DSPX]
 
 assign dspx_dp_enable = dspx_dp_enable_w;
 
-reg [5:0] dspx_enable_r;
-initial dspx_enable_r = 6'b000000;
-always @(posedge CLK) dspx_enable_r <= {dspx_enable_r[4:0], dspx_enable_w};
-assign dspx_enable = &dspx_enable_r[5:2];
+//reg [5:0] dspx_enable_r;
+//initial dspx_enable_r = 6'b000000;
+//always @(posedge CLK) dspx_enable_r <= {dspx_enable_r[4:0], dspx_enable_w};
+assign dspx_enable = dspx_enable_w /*&dspx_enable_r[5:1]*/;
 
 wire r213f_enable_w = (SNES_PA == 8'h3f);
-reg [5:0] r213f_enable_r;
-initial r213f_enable_r = 6'b000000;
-always @(posedge CLK) r213f_enable_r <= {r213f_enable_r[4:0], r213f_enable_w};
-assign r213f_enable = &r213f_enable_r[5:2] & featurebits[FEAT_213F];
+//reg [5:0] r213f_enable_r;
+//initial r213f_enable_r = 6'b000000;
+//always @(posedge CLK) r213f_enable_r <= {r213f_enable_r[4:0], r213f_enable_w};
+assign r213f_enable = r213f_enable_w /*&r213f_enable_r[5:2]*/ & featurebits[FEAT_213F];
+
+wire snescmd_rd_enable_w = (SNES_PA[7:4] == 4'b1111);
+//reg [5:0] snescmd_rd_enable_r;
+//initial snescmd_rd_enable_r = 6'b000000;
+//always @(posedge CLK) snescmd_rd_enable_r <= {snescmd_rd_enable_r[4:0], snescmd_rd_enable_w};
+assign snescmd_rd_enable = snescmd_rd_enable_w /*&snescmd_rd_enable_r[5:1]*/;
+
+assign snescmd_wr_enable_w = (SNES_ADDR[23:4] == 20'hccccc);
+//reg [5:0] snescmd_wr_enable_r;
+//initial snescmd_wr_enable_r = 6'b000000;
+//always @(posedge CLK) snescmd_wr_enable_r <= {snescmd_wr_enable_r[4:0], snescmd_wr_enable_w};
+assign snescmd_wr_enable = snescmd_wr_enable_w /*&snescmd_wr_enable_r[5:1]*/;
 
 endmodule

verilog/sd2snes/bsx.v

@@ -32,7 +32,10 @@ module bsx(
   input use_bsx,
   output data_ovr,
   output flash_writable,
-  input [55:0] rtc_data
+  input [59:0] rtc_data,
+  output [9:0] bs_page_out, // support only page 0000-03ff
+  output bs_page_enable,
+  output [8:0] bs_page_offset
 );
 
 wire [3:0] reg_addr = snes_addr[19:16]; // 00-0f:5000-5fff
@@ -67,15 +70,44 @@ assign flash_writable = (use_bsx)
                         && flash_we_r
                         && !is_flash_special_address;
 
-assign data_ovr = cart_enable | base_enable | flash_ovr;
+assign data_ovr = (cart_enable | base_enable | flash_ovr) & ~bs_page_enable;
+
+
+reg [9:0] bs_page0;
+reg [9:0] bs_page1;
+
+reg [8:0] bs_page0_offset;
+reg [8:0] bs_page1_offset;
+reg [4:0] bs_stb0_offset;
+reg [4:0] bs_stb1_offset;
+
+wire bs_sta0_en = base_addr == 5'h0a;
+wire bs_stb0_en = base_addr == 5'h0b;
+wire bs_page0_en = base_addr == 5'h0c;
+
+wire bs_sta1_en = base_addr == 5'h10;
+wire bs_stb1_en = base_addr == 5'h11;
+wire bs_page1_en = base_addr == 5'h12;
+
+assign bs_page_enable = base_enable & ((|bs_page0 & (bs_page0_en | bs_sta0_en | bs_stb0_en))
+                                      |(|bs_page1 & (bs_page1_en | bs_sta1_en | bs_stb1_en)));
+
+assign bs_page_out = (bs_page0_en | bs_sta0_en | bs_stb0_en) ? bs_page0 : bs_page1;
+
+assign bs_page_offset = bs_sta0_en ? 9'h032
+                        : bs_stb0_en ? (9'h034 + bs_stb0_offset)
+								: bs_sta1_en ? 9'h032
+								: bs_stb1_en ? (9'h034 + bs_stb1_offset)
+								: (9'h048 + (bs_page0_en ? bs_page0_offset : bs_page1_offset));
 
 reg [3:0] reg_oe_sreg;
 always @(posedge clkin) reg_oe_sreg <= {reg_oe_sreg[2:0], reg_oe};
-wire reg_oe_falling = (reg_oe_sreg[3:0] == 4'b1000);
+wire reg_oe_falling = (reg_oe_sreg[3:1] == 3'b100);
+wire reg_oe_rising = (reg_oe_sreg[3:1] == 3'b001);
 
-reg [1:0] reg_we_sreg;
-always @(posedge clkin) reg_we_sreg <= {reg_we_sreg[0], reg_we};
-wire reg_we_rising = (reg_we_sreg[1:0] == 2'b01);
+reg [2:0] reg_we_sreg;
+always @(posedge clkin) reg_we_sreg <= {reg_we_sreg[1:0], reg_we};
+wire reg_we_rising = (reg_we_sreg[2:1] == 2'b01);
 
 reg [1:0] pgm_we_sreg;
 always @(posedge clkin) pgm_we_sreg <= {pgm_we_sreg[0], pgm_we};
@@ -96,40 +128,40 @@ wire [7:0] rtc_sec = rtc_data[3:0] + (rtc_data[7:4] << 3) + (rtc_data[7:4] << 1)
 wire [7:0] rtc_min = rtc_data[11:8] + (rtc_data[15:12] << 3) + (rtc_data[15:12] << 1);
 wire [7:0] rtc_hour = rtc_data[19:16] + (rtc_data[23:20] << 3) + (rtc_data[23:20] << 1);
 wire [7:0] rtc_day = rtc_data[27:24] + (rtc_data[31:28] << 3) + (rtc_data[31:28] << 1);
-/* The following signals are currently unused.
-   They are kept in case more Satellaview date registers are discovered. */
 wire [7:0] rtc_month = rtc_data[35:32] + (rtc_data[39:36] << 3) + (rtc_data[39:36] << 1);
+wire [7:0] rtc_dow = {4'b0,rtc_data[59:56]};
 wire [7:0] rtc_year1 = rtc_data[43:40] + (rtc_data[47:44] << 3) + (rtc_data[47:44] << 1);
 wire [7:0] rtc_year100 = rtc_data[51:48] + (rtc_data[55:52] << 3) + (rtc_data[55:52] << 1);
+wire [15:0] rtc_year = (rtc_year100 << 6) + (rtc_year100 << 5) + (rtc_year100 << 2) + rtc_year1;
 
 initial begin
   regs_tmpr <= 15'b000000100000000;
   regs_outr <= 15'b000000100000000;
   bsx_counter <= 0;
-  base_regs[8] <= 0;
-  base_regs[9] <= 0;
-  base_regs[10] <= 0;
-  base_regs[11] <= 8'h9f;
-  base_regs[12] <= 8'h10;
-  base_regs[13] <= 8'h9f;
-  base_regs[14] <= 0;
-  base_regs[15] <= 0;
-  base_regs[16] <= 0;
-  base_regs[17] <= 8'h9f;
-  base_regs[18] <= 8'h01;
-  base_regs[19] <= 8'h9f;
-  base_regs[20] <= 0;
-  base_regs[21] <= 0;
-  base_regs[22] <= 8'h02;
-  base_regs[23] <= 8'hff;
-  base_regs[24] <= 8'h80;
-  base_regs[25] <= 8'h01;
-  base_regs[26] <= 0;
-  base_regs[27] <= 0;
-  base_regs[28] <= 0;
-  base_regs[29] <= 0;
-  base_regs[30] <= 0;
-  base_regs[31] <= 0;
+  base_regs[5'h08] <= 0;
+  base_regs[5'h09] <= 0;
+  base_regs[5'h0a] <= 8'h01;
+  base_regs[5'h0b] <= 0;
+  base_regs[5'h0c] <= 0;
+  base_regs[5'h0d] <= 0;
+  base_regs[5'h0e] <= 0;
+  base_regs[5'h0f] <= 0;
+  base_regs[5'h10] <= 8'h01;
+  base_regs[5'h11] <= 0;
+  base_regs[5'h12] <= 0;
+  base_regs[5'h13] <= 0;
+  base_regs[5'h14] <= 0;
+  base_regs[5'h15] <= 0;
+  base_regs[5'h16] <= 0;
+  base_regs[5'h17] <= 0;
+  base_regs[5'h18] <= 0;
+  base_regs[5'h19] <= 0;
+  base_regs[5'h1a] <= 0;
+  base_regs[5'h1b] <= 0;
+  base_regs[5'h1c] <= 0;
+  base_regs[5'h1d] <= 0;
+  base_regs[5'h1e] <= 0;
+  base_regs[5'h1f] <= 0;
   flash_vendor_data[3'h0] <= 8'h4d;
   flash_vendor_data[3'h1] <= 8'h00;
   flash_vendor_data[3'h2] <= 8'h50;
@@ -140,39 +172,55 @@ initial begin
   flash_vendor_data[3'h7] <= 8'h00;
   flash_ovr_r <= 1'b0;
   flash_we_r <= 1'b0;
+  bs_page0 <= 10'h0;
+  bs_page1 <= 10'h0;
+  bs_page0_offset <= 9'h0;
+  bs_page1_offset <= 9'h0;
+  bs_stb0_offset <= 5'h00;
+  bs_stb1_offset <= 5'h00;
 end
 
 
 always @(posedge clkin) begin
+  if(reg_oe_rising && base_enable) begin
+    case(base_addr)
+	   5'h0b: begin
+		  bs_stb0_offset <= bs_stb0_offset + 1;
+		  base_regs[5'h0d] <= base_regs[5'h0d] | reg_data_in;
+		end
+		5'h0c: bs_page0_offset <= bs_page0_offset + 1; 
+		5'h11: begin
+		  bs_stb1_offset <= bs_stb1_offset + 1;
+  		  base_regs[5'h13] <= base_regs[5'h13] | reg_data_in;
+		end
+		5'h12: bs_page1_offset <= bs_page1_offset + 1;
+	 endcase
+  end else 
   if(reg_oe_falling) begin
     if(cart_enable)
       reg_data_outr <= {regs_outr[reg_addr], 7'b0};
     else if(base_enable) begin
       case(base_addr)
-        5'b10010: begin
-          if(bsx_counter < 18) begin
-            bsx_counter <= bsx_counter + 1;
-            case (bsx_counter)
-              5:
-                reg_data_outr <= 8'h1;
-              6:
-                reg_data_outr <= 8'h1;
-              10:
-                reg_data_outr <= rtc_sec;
-              11:
-                reg_data_outr <= rtc_min;
-              12:
-                reg_data_outr <= rtc_hour;
-              default:
-                reg_data_outr <= 8'h0;
-            endcase
-          end else begin
-            reg_data_outr <= 8'h0;
-            bsx_counter <= 0;
-          end
+        5'h0c, 5'h12: begin
+          case (bs_page1_offset)
+            4: reg_data_outr <= 8'h3;
+            5: reg_data_outr <= 8'h1;
+            6: reg_data_outr <= 8'h1;
+            10: reg_data_outr <= rtc_sec;
+            11: reg_data_outr <= rtc_min;
+            12: reg_data_outr <= rtc_hour;
+				13: reg_data_outr <= rtc_dow;
+				14: reg_data_outr <= rtc_day;
+				15: reg_data_outr <= rtc_month;
+				16: reg_data_outr <= rtc_year[7:0];
+				17: reg_data_outr <= rtc_year[15:8];
+            default: reg_data_outr <= 8'h0;
+          endcase
+        end
+        5'h0d, 5'h13: begin
+          reg_data_outr <= base_regs[base_addr];
+			 base_regs[base_addr] <= 8'h00;
         end
-        5'b10011:
-          reg_data_outr <= base_regs[base_addr] & 8'h3f;
         default:
           reg_data_outr <= base_regs[base_addr];
       endcase
@@ -190,7 +238,7 @@ always @(posedge clkin) begin
     end
   end else if(pgm_we_rising) begin
     regs_tmpr[8:1] <= (regs_tmpr[8:1] | reg_set_bits[7:0]) & ~reg_reset_bits[7:0];
-      regs_outr[8:1] <= (regs_outr[8:1] | reg_set_bits[7:0]) & ~reg_reset_bits[7:0];
+    regs_outr[8:1] <= (regs_outr[8:1] | reg_set_bits[7:0]) & ~reg_reset_bits[7:0];
   end else if(reg_we_rising && cart_enable) begin
     if(reg_addr == 4'he && reg_data_in[7])
       regs_outr <= regs_tmpr | 15'b100000000000000;
@@ -198,16 +246,27 @@ always @(posedge clkin) begin
       regs_tmpr[reg_addr] <= reg_data_in[7];
   end else if(reg_we_rising && base_enable) begin
     case(base_addr)
-      5'h0f: begin
-        base_regs[base_addr-1] <= base_regs[base_addr]-(base_regs[base_addr-1] >> 1);
-        base_regs[base_addr] <= base_regs[base_addr] >> 1;
+		5'h09: begin
+		  base_regs[8'h09] <= reg_data_in;
+		  bs_page0 <= {reg_data_in[1:0], base_regs[8'h08]};
+		  bs_page0_offset <= 9'h00;
+		end
+		5'h0b: begin
+		  bs_stb0_offset <= 5'h00;
+		end
+      5'h0c: begin
+        bs_page0_offset <= 9'h00;
+      end
+		5'h0f: begin
+		  base_regs[8'h0f] <= reg_data_in;
+		  bs_page1 <= {reg_data_in[1:0], base_regs[8'h0e]};
+		  bs_page1_offset <= 9'h00;
       end
       5'h11: begin
-        bsx_counter <= 0;
-        base_regs[base_addr] <= reg_data_in;
+		  bs_stb1_offset <= 5'h00;
       end
       5'h12: begin
-        base_regs[8'h10] <= 8'h80;
+        bs_page1_offset <= 9'h00;
       end
       default:
         base_regs[base_addr] <= reg_data_in;

verilog/sd2snes/clk_test.v

@@ -39,7 +39,7 @@ always @(posedge clk) sysclk_sreg <= {sysclk_sreg[0], sysclk};
 wire sysclk_rising = (sysclk_sreg == 2'b01);
 
 always @(posedge clk) begin
-  if(sysclk_counter < 96000000) begin
+  if(sysclk_counter < 88000000) begin
     sysclk_counter <= sysclk_counter + 1;
     if(sysclk_rising) sysclk_value <= sysclk_value + 1;
   end else begin

verilog/sd2snes/dac.v

@@ -30,7 +30,8 @@ module dac(
   input reset,
   output sdout,
   output lrck,
-  output mclk,
+  output mclk,
+  output sclk,
   output DAC_STATUS
 );
 
@@ -68,14 +69,15 @@ reg [15:0] smpshift;
 
 assign mclk = cnt[2]; // mclk = clk/8
 assign lrck = cnt[8]; // lrck = mclk/128
-wire sclk = cnt[3];   // sclk = lrck*32
+assign sclk = cnt[3]; // sclk = lrck*32
 
 reg [2:0] lrck_sreg;
 reg [2:0] sclk_sreg;
-wire lrck_rising = ({lrck_sreg[2:1]} == 2'b01);
-wire lrck_falling = ({lrck_sreg[2:1]} == 2'b10);
+wire lrck_rising = (lrck_sreg[1:0] == 2'b01);
+wire lrck_falling = (lrck_sreg[1:0] == 2'b10);
 
-wire sclk_rising = ({sclk_sreg[2:1]} == 2'b01);
+wire sclk_rising = (sclk_sreg[1:0] == 2'b01);
+wire sclk_falling = (sclk_sreg[1:0] == 2'b10);
 
 wire vol_latch_rising = (vol_latch_reg[1:0] == 2'b01);
 reg sdout_reg;
@@ -143,17 +145,17 @@ always @(posedge clkin) begin
 end
 
 always @(posedge clkin) begin
-  if (lrck_rising) begin // right channel
-    smpshift <= (({16'h0, dac_data[31:16]^16'h8000} * vol_reg) >> 8) ^ 16'h8000;
-    samples <= samples + 1;
-  end else if (lrck_falling) begin // left channel
-    smpshift <= (({16'h0, dac_data[15:0]^16'h8000} * vol_reg) >> 8) ^ 16'h8000;
-  end else begin
-    if (sclk_rising) begin
-      smpcnt <= smpcnt + 1;
-      sdout_reg <= smpshift[15];
+  if (sclk_falling) begin
+    smpcnt <= smpcnt + 1;
+    sdout_reg <= smpshift[15];
+    if (lrck_rising) begin // right channel
+      smpshift <= (({16'h0, dac_data[31:16]^16'h8000} * vol_reg) >> 8) ^ 16'h8000;
+      samples <= samples + 1;
+    end else if (lrck_falling) begin // left channel
+      smpshift <= (({16'h0, dac_data[15:0]^16'h8000} * vol_reg) >> 8) ^ 16'h8000;
+    end else begin
       smpshift <= {smpshift[14:0], 1'b0};
-    end
+    end
   end
 end
 

verilog/sd2snes/main.ucf

@@ -1,6 +1,5 @@
 NET "CLKIN" TNM_NET = "CLKIN";
-TIMESPEC TS_CLKIN = PERIOD "CLKIN" 24 MHz HIGH 50 %;
-//TIMESPEC TS_CLKIN = PERIOD "CLKIN" 21.5 MHz HIGH 50 %;
+TIMESPEC TS_CLKIN = PERIOD "CLKIN" 22.05 MHz HIGH 50 %;
 
 NET "p113_out" IOSTANDARD = LVCMOS33;
 NET "p113_out" LOC = P113;
@@ -8,7 +7,7 @@ NET "p113_out" LOC = P113;
 NET "SPI_SCK" LOC = P71;
 NET "SPI_SCK" CLOCK_DEDICATED_ROUTE = FALSE;
 NET "SPI_SCK" TNM_NET = "SPI_SCK";
-TIMESPEC TS_SPI_SCK = PERIOD "SPI_SCK" 48MHz HIGH 50 %;
+TIMESPEC TS_SPI_SCK = PERIOD "SPI_SCK" 88.2MHz HIGH 50 %;
 
 NET "SPI_SCK" IOSTANDARD = LVCMOS33;
 NET "SPI_SCK" DRIVE = 8;
@@ -33,30 +32,30 @@ NET "ROM_CE" LOC = P172;
 NET "ROM_CE" IOSTANDARD = LVCMOS33;
 NET "ROM_CE" DRIVE = 8;
 
-NET "SNES_ADDR[0]" LOC = P119;
-NET "SNES_ADDR[10]" LOC = P146;
-NET "SNES_ADDR[11]" LOC = P148;
-NET "SNES_ADDR[12]" LOC = P147;
-NET "SNES_ADDR[13]" LOC = P144;
-NET "SNES_ADDR[14]" LOC = P141;
-NET "SNES_ADDR[15]" LOC = P139;
-NET "SNES_ADDR[16]" LOC = P137;
-NET "SNES_ADDR[17]" LOC = P133;
-NET "SNES_ADDR[18]" LOC = P131;
-NET "SNES_ADDR[19]" LOC = P128;
-NET "SNES_ADDR[1]" LOC = P122;
-NET "SNES_ADDR[20]" LOC = P125;
-NET "SNES_ADDR[21]" LOC = P123;
-NET "SNES_ADDR[22]" LOC = P120;
-NET "SNES_ADDR[23]" LOC = P117;
-NET "SNES_ADDR[2]" LOC = P124;
-NET "SNES_ADDR[3]" LOC = P126;
-NET "SNES_ADDR[4]" LOC = P130;
-NET "SNES_ADDR[5]" LOC = P132;
-NET "SNES_ADDR[6]" LOC = P135;
-NET "SNES_ADDR[7]" LOC = P138;
-NET "SNES_ADDR[8]" LOC = P140;
-NET "SNES_ADDR[9]" LOC = P143;
+NET "SNES_ADDR_IN[0]" LOC = P119;
+NET "SNES_ADDR_IN[10]" LOC = P146;
+NET "SNES_ADDR_IN[11]" LOC = P148;
+NET "SNES_ADDR_IN[12]" LOC = P147;
+NET "SNES_ADDR_IN[13]" LOC = P144;
+NET "SNES_ADDR_IN[14]" LOC = P141;
+NET "SNES_ADDR_IN[15]" LOC = P139;
+NET "SNES_ADDR_IN[16]" LOC = P137;
+NET "SNES_ADDR_IN[17]" LOC = P133;
+NET "SNES_ADDR_IN[18]" LOC = P131;
+NET "SNES_ADDR_IN[19]" LOC = P128;
+NET "SNES_ADDR_IN[1]" LOC = P122;
+NET "SNES_ADDR_IN[20]" LOC = P125;
+NET "SNES_ADDR_IN[21]" LOC = P123;
+NET "SNES_ADDR_IN[22]" LOC = P120;
+NET "SNES_ADDR_IN[23]" LOC = P117;
+NET "SNES_ADDR_IN[2]" LOC = P124;
+NET "SNES_ADDR_IN[3]" LOC = P126;
+NET "SNES_ADDR_IN[4]" LOC = P130;
+NET "SNES_ADDR_IN[5]" LOC = P132;
+NET "SNES_ADDR_IN[6]" LOC = P135;
+NET "SNES_ADDR_IN[7]" LOC = P138;
+NET "SNES_ADDR_IN[8]" LOC = P140;
+NET "SNES_ADDR_IN[9]" LOC = P143;
 NET "SNES_DATA[0]" LOC = P107;
 NET "SNES_DATA[1]" LOC = P102;
 NET "SNES_DATA[2]" LOC = P100;
@@ -379,54 +378,54 @@ NET "ROM_WE" LOC = P190;
 
 NET "ROM_WE" IOSTANDARD = LVCMOS33;
 NET "ROM_WE" DRIVE = 8;
-NET "SNES_ADDR[0]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[0]" DRIVE = 8;
-NET "SNES_ADDR[10]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[10]" DRIVE = 8;
-NET "SNES_ADDR[11]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[11]" DRIVE = 8;
-NET "SNES_ADDR[12]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[12]" DRIVE = 8;
-NET "SNES_ADDR[13]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[13]" DRIVE = 8;
-NET "SNES_ADDR[14]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[14]" DRIVE = 8;
-NET "SNES_ADDR[15]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[15]" DRIVE = 8;
-NET "SNES_ADDR[16]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[16]" DRIVE = 8;
-NET "SNES_ADDR[17]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[17]" DRIVE = 8;
-NET "SNES_ADDR[18]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[18]" DRIVE = 8;
-NET "SNES_ADDR[19]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[19]" DRIVE = 8;
-NET "SNES_ADDR[1]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[1]" DRIVE = 8;
-NET "SNES_ADDR[20]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[20]" DRIVE = 8;
-NET "SNES_ADDR[21]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[21]" DRIVE = 8;
-NET "SNES_ADDR[22]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[22]" DRIVE = 8;
-NET "SNES_ADDR[23]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[23]" DRIVE = 8;
-NET "SNES_ADDR[2]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[2]" DRIVE = 8;
-NET "SNES_ADDR[3]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[3]" DRIVE = 8;
-NET "SNES_ADDR[4]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[4]" DRIVE = 8;
-NET "SNES_ADDR[5]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[5]" DRIVE = 8;
-NET "SNES_ADDR[6]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[6]" DRIVE = 8;
-NET "SNES_ADDR[7]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[7]" DRIVE = 8;
-NET "SNES_ADDR[8]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[8]" DRIVE = 8;
-NET "SNES_ADDR[9]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[9]" DRIVE = 8;
+NET "SNES_ADDR_IN[0]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[0]" DRIVE = 8;
+NET "SNES_ADDR_IN[10]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[10]" DRIVE = 8;
+NET "SNES_ADDR_IN[11]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[11]" DRIVE = 8;
+NET "SNES_ADDR_IN[12]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[12]" DRIVE = 8;
+NET "SNES_ADDR_IN[13]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[13]" DRIVE = 8;
+NET "SNES_ADDR_IN[14]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[14]" DRIVE = 8;
+NET "SNES_ADDR_IN[15]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[15]" DRIVE = 8;
+NET "SNES_ADDR_IN[16]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[16]" DRIVE = 8;
+NET "SNES_ADDR_IN[17]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[17]" DRIVE = 8;
+NET "SNES_ADDR_IN[18]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[18]" DRIVE = 8;
+NET "SNES_ADDR_IN[19]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[19]" DRIVE = 8;
+NET "SNES_ADDR_IN[1]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[1]" DRIVE = 8;
+NET "SNES_ADDR_IN[20]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[20]" DRIVE = 8;
+NET "SNES_ADDR_IN[21]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[21]" DRIVE = 8;
+NET "SNES_ADDR_IN[22]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[22]" DRIVE = 8;
+NET "SNES_ADDR_IN[23]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[23]" DRIVE = 8;
+NET "SNES_ADDR_IN[2]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[2]" DRIVE = 8;
+NET "SNES_ADDR_IN[3]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[3]" DRIVE = 8;
+NET "SNES_ADDR_IN[4]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[4]" DRIVE = 8;
+NET "SNES_ADDR_IN[5]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[5]" DRIVE = 8;
+NET "SNES_ADDR_IN[6]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[6]" DRIVE = 8;
+NET "SNES_ADDR_IN[7]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[7]" DRIVE = 8;
+NET "SNES_ADDR_IN[8]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[8]" DRIVE = 8;
+NET "SNES_ADDR_IN[9]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[9]" DRIVE = 8;
 
 
 NET "SNES_CPU_CLK" LOC = P95;
@@ -535,6 +534,7 @@ NET "SD_DAT[3]" LOC = P63;
 # PlanAhead Generated IO constraints 
 
 NET "SD_CLK" IOSTANDARD = LVCMOS33;
+NET "SD_CLK" PULLUP;
 NET "SD_CMD" IOSTANDARD = LVCMOS33;
 NET "SD_DAT[0]" IOSTANDARD = LVCMOS33;
 NET "SD_DAT[1]" IOSTANDARD = LVCMOS33;

verilog/sd2snes/main.v

@@ -23,7 +23,7 @@ module main(
   input CLKIN,
 
   /* SNES signals */
-  input [23:0] SNES_ADDR,
+  input [23:0] SNES_ADDR_IN,
   input SNES_READ,
   input SNES_WRITE,
   input SNES_CS,
@@ -76,6 +76,17 @@ module main(
   /* debug */
   output p113_out
 );
+
+wire CLK2;
+
+reg [23:0] SNES_ADDR_r [2:0];
+always @(posedge CLK2) begin
+  SNES_ADDR_r[2] <= SNES_ADDR_r[1];
+  SNES_ADDR_r[1] <= SNES_ADDR_r[0];
+  SNES_ADDR_r[0] <= SNES_ADDR_IN;
+end
+wire [23:0] SNES_ADDR = SNES_ADDR_r[2] & SNES_ADDR_r[1];
+
 wire dspx_dp_enable;
 
 wire [7:0] spi_cmd_data;
@@ -133,6 +144,22 @@ wire [7:0] featurebits;
 wire [23:0] MAPPED_SNES_ADDR;
 wire ROM_ADDR0;
 
+wire [9:0] bs_page;
+wire [8:0] bs_page_offset;
+wire bs_page_enable;
+
+
+wire [4:0] DBG_srtc_state;
+wire DBG_srtc_we_rising;
+wire [3:0] DBG_srtc_ptr;
+wire [5:0] DBG_srtc_we_sreg;
+wire [13:0] DBG_msu_address;
+wire DBG_msu_reg_oe_rising;
+wire DBG_msu_reg_oe_falling;
+wire DBG_msu_reg_we_rising;
+wire [2:0] SD_DMA_DBG_clkcnt;
+wire [10:0] SD_DMA_DBG_cyclecnt;
+
 sd_dma snes_sd_dma(
   .CLK(CLK2),
   .SD_DAT(SD_DAT),
@@ -146,7 +173,9 @@ sd_dma snes_sd_dma(
   .SD_DMA_PARTIAL_START(SD_DMA_PARTIAL_START),
   .SD_DMA_PARTIAL_END(SD_DMA_PARTIAL_END),
   .SD_DMA_START_MID_BLOCK(SD_DMA_START_MID_BLOCK),
-  .SD_DMA_END_MID_BLOCK(SD_DMA_END_MID_BLOCK)
+  .SD_DMA_END_MID_BLOCK(SD_DMA_END_MID_BLOCK),
+  .DBG_cyclecnt(SD_DMA_DBG_cyclecnt),
+  .DBG_clkcnt(SD_DMA_DBG_clkcnt)
 );
 
 wire SD_DMA_TO_ROM = (SD_DMA_STATUS && (SD_DMA_TGT == 2'b00));
@@ -178,7 +207,11 @@ srtc snes_srtc (
   .enable(srtc_enable),
   .rtc_data_out(srtc_rtc_data_out),
   .rtc_we(srtc_rtc_we),
-  .reset(srtc_reset)
+  .reset(srtc_reset),
+  .srtc_state(DBG_srtc_state),
+  .srtc_reg_we_rising(DBG_srtc_we_rising),
+  .srtc_rtc_ptr(DBG_srtc_ptr),
+  .srtc_we_sreg(DBG_srtc_we_sreg)
 );
 
 rtc snes_rtc (
@@ -210,7 +243,12 @@ msu snes_msu (
   .status_set_bits(msu_status_set_bits),
   .status_reset_we(msu_status_reset_we),
   .msu_address_ext(msu_ptr_addr),
-  .msu_address_ext_write(msu_addr_reset)
+  .msu_address_ext_write(msu_addr_reset),
+  .DBG_msu_reg_oe_rising(DBG_msu_reg_oe_rising),
+  .DBG_msu_reg_oe_falling(DBG_msu_reg_oe_falling),
+  .DBG_msu_reg_we_rising(DBG_msu_reg_we_rising),
+  .DBG_msu_address(DBG_msu_address),
+  .DBG_msu_address_ext_write_rising(DBG_msu_address_ext_write_rising)
 );
 
 bsx snes_bsx(
@@ -227,7 +265,11 @@ bsx snes_bsx(
   .reg_set_bits(bsx_regs_set_bits),
   .data_ovr(bsx_data_ovr),
   .flash_writable(IS_FLASHWR),
-  .rtc_data(rtc_data[55:0])
+  .rtc_data(rtc_data[59:0]),
+  .bs_page_out(bs_page), // support only page 0000-03ff
+  .bs_page_enable(bs_page_enable),
+  .bs_page_offset(bs_page_offset)
+
 );
 
 spi snes_spi(
@@ -330,7 +372,8 @@ mcu_cmd snes_mcu_cmd(
   .mcu_rrq(MCU_RRQ),
   .mcu_wrq(MCU_WRQ),
   .mcu_rq_rdy(MCU_RDY),
-  .region_out(mcu_region)
+  .region_out(mcu_region),
+  .DBG_mcu_nextaddr(DBG_mcu_nextaddr)
 );
 
 wire [7:0] DCM_STATUS;
@@ -343,33 +386,37 @@ my_dcm snes_dcm(
   .STATUS(DCM_STATUS)
 );
 
-my_dcm snes_dcm2(
-  .CLKIN(SNES_SYSCLK),
-  .CLKFX(SYSCLK2),
-  .RST(DCM_RST)
-);
-
 assign DCM_RST=0;
 
-reg [5:0] SNES_PARDr;
-reg [5:0] SNES_READr;
-reg [5:0] SNES_WRITEr;
-reg [5:0] SNES_CPU_CLKr;
+reg [7:0] SNES_PARDr;
+reg [7:0] SNES_PAWRr;
+reg [7:0] SNES_READr;
+reg [7:0] SNES_WRITEr;
+reg [7:0] SNES_CPU_CLKr;
 
-wire SNES_PARD_start = (SNES_PARDr == 6'b111110);
-wire SNES_RD_start = (SNES_READr == 6'b111110);
-wire SNES_WR_start = (SNES_WRITEr == 6'b111110);
-wire SNES_cycle_start = (SNES_CPU_CLKr[5:0] == 6'b000001);
-wire SNES_cycle_end = (SNES_CPU_CLKr[5:0] == 6'b111110);
+wire SNES_FAKE_CLK = &SNES_CPU_CLKr[2:1];
+//wire SNES_FAKE_CLK = ~(SNES_READ & SNES_WRITE);
 
-always @(posedge SYSCLK2) begin
-  SNES_PARDr <= {SNES_PARDr[4:0], SNES_PARD};
+reg SNES_DEADr;
+initial SNES_DEADr = 0;
+
+wire SNES_PARD_start = (SNES_PARDr[7:1] == 7'b1111110);
+wire SNES_PAWR_start = (SNES_PAWRr[7:1] == 7'b0000001);
+wire SNES_RD_start = (SNES_READr[7:1] == 7'b1111110);
+wire SNES_WR_start = (SNES_WRITEr[7:1] == 7'b1111110);
+wire SNES_WR_end = (SNES_WRITEr[7:1] == 7'b0000001);
+wire SNES_cycle_start = ((SNES_CPU_CLKr[7:2] & SNES_CPU_CLKr[6:1]) == 6'b000001);
+wire SNES_cycle_end = ((SNES_CPU_CLKr[7:2] & SNES_CPU_CLKr[6:1]) == 6'b111110);
+
+always @(posedge CLK2) begin
+  SNES_PARDr <= {SNES_PARDr[6:0], SNES_PARD};
 end
 
 always @(posedge CLK2) begin
-  SNES_READr <= {SNES_READr[4:0], SNES_READ};
-  SNES_WRITEr <= {SNES_WRITEr[4:0], SNES_WRITE};
-  SNES_CPU_CLKr <= {SNES_CPU_CLKr[4:0], SNES_CPU_CLK};
+  SNES_PAWRr <= {SNES_PAWRr[6:0], SNES_PAWR};
+  SNES_READr <= {SNES_READr[6:0], SNES_READ};
+  SNES_WRITEr <= {SNES_WRITEr[6:0], SNES_WRITE};
+  SNES_CPU_CLKr <= {SNES_CPU_CLKr[6:0], SNES_CPU_CLK};
 end
 
 address snes_addr(
@@ -390,13 +437,18 @@ address snes_addr(
   //BS-X
   .use_bsx(use_bsx),
   .bsx_regs(bsx_regs),
+  .bs_page_offset(bs_page_offset),
+  .bs_page(bs_page),
+  .bs_page_enable(bs_page_enable),
   //SRTC
   .srtc_enable(srtc_enable),
   //uPD77C25
   .dspx_enable(dspx_enable),
   .dspx_dp_enable(dspx_dp_enable),
   .dspx_a0(DSPX_A0),
-  .r213f_enable(r213f_enable)
+  .r213f_enable(r213f_enable),
+  .snescmd_rd_enable(snescmd_rd_enable),
+  .snescmd_wr_enable(snescmd_wr_enable)
 );
 
 parameter MODE_SNES = 1'b0;
@@ -420,23 +472,27 @@ parameter ST_MCU_WR_WAIT  = 18'b000100000000000000;
 parameter ST_MCU_WR_WAIT2 = 18'b001000000000000000;
 parameter ST_MCU_WR_END   = 18'b010000000000000000;
 
-parameter ROM_RD_WAIT = 4'h4;
+parameter ROM_RD_WAIT = 4'h0;
 parameter ROM_RD_WAIT_MCU = 4'h6;
+parameter ROM_WR_WAIT = 4'h4;
 parameter ROM_WR_WAIT1 = 4'h2;
-parameter ROM_WR_WAIT2 = 4'h3;
-parameter ROM_WR_WAIT_MCU = 4'h6;
+parameter ROM_WR_WAIT2 = 4'h1;
+parameter ROM_WR_WAIT_MCU = 4'h5;
+
+parameter SNES_DEAD_TIMEOUT = 17'd88000; // 1ms
 
 reg [17:0] STATE;
 initial STATE = ST_IDLE;
 
+reg [7:0] SNES_DINr;
+reg [7:0] SNES_DOUTr;
+reg [7:0] ROM_DOUTr;
+
 assign DSPX_SNES_DATA_IN = SNES_DATA;
 assign SRTC_SNES_DATA_IN = SNES_DATA[3:0];
 assign MSU_SNES_DATA_IN = SNES_DATA;
 assign BSX_SNES_DATA_IN = SNES_DATA;
 
-reg [7:0] SNES_DINr;
-reg [7:0] ROM_DOUTr;
-
 reg [7:0] r213fr;
 reg r213f_forceread;
 reg [2:0] r213f_delay;
@@ -446,15 +502,17 @@ initial r213f_forceread = 0;
 initial r213f_state = 2'b01;
 initial r213f_delay = 3'b011;
 
+reg[7:0] snescmd_regs[15:0];
 
-assign SNES_DATA = (r213f_enable & (!SNES_PARD ^ r213f_forceread)) ? r213fr
-                   :(!SNES_READ ^ r213f_forceread)
+assign SNES_DATA = (snescmd_rd_enable & ~SNES_PARD) ? snescmd_regs[SNES_ADDR[3:0]]
+                   :(r213f_enable & ~SNES_PARD & ~r213f_forceread) ? r213fr
+                   :(~SNES_READ ^ (r213f_forceread & r213f_enable & ~SNES_PARD))
                                 ? (srtc_enable ? SRTC_SNES_DATA_OUT
                                   :dspx_enable ? DSPX_SNES_DATA_OUT
                                   :dspx_dp_enable ? DSPX_SNES_DATA_OUT
                                   :msu_enable ? MSU_SNES_DATA_OUT
                                   :bsx_data_ovr ? BSX_SNES_DATA_OUT
-                                  :SNES_DINr /*(ROM_ADDR0 ? ROM_DATA[7:0] : ROM_DATA[15:8])*/) : 8'bZ;
+                                  :SNES_DOUTr /*(ROM_ADDR0 ? ROM_DATA[7:0] : ROM_DATA[15:8])*/) : 8'bZ;
 
 reg [3:0] ST_MEM_DELAYr;
 reg MCU_RD_PENDr;
@@ -466,25 +524,35 @@ always @(posedge CLK2) begin
   else if(STATE & (ST_SNES_RD_END | ST_SNES_WR_END)) NEED_SNES_ADDRr <= 1'b0;
 end
 
-wire ASSERT_SNES_ADDR = SNES_CPU_CLK & NEED_SNES_ADDRr;
-
-assign ROM_ADDR  = (SD_DMA_TO_ROM) ? MCU_ADDR[23:1] : (ASSERT_SNES_ADDR) ? MAPPED_SNES_ADDR[23:1] : ROM_ADDRr[23:1];
-assign ROM_ADDR0 = (SD_DMA_TO_ROM) ? MCU_ADDR[0] : (ASSERT_SNES_ADDR) ? MAPPED_SNES_ADDR[0] : ROM_ADDRr[0];
-
-reg ROM_WEr;
-initial ROM_WEr = 1'b1;
-
 reg RQ_MCU_RDYr;
 initial RQ_MCU_RDYr = 1'b1;
 assign MCU_RDY = RQ_MCU_RDYr;
 
+reg ROM_SAr;
+initial ROM_SAr = 1'b1;
+//wire ROM_SA = SNES_FAKE_CLK | ((STATE == ST_IDLE) ^ (~RQ_MCU_RDYr & SNES_cycle_end));
+wire ROM_SA = ROM_SAr;
+
+assign ROM_ADDR  = (SD_DMA_TO_ROM) ? MCU_ADDR[23:1] : (ROM_SA) ? MAPPED_SNES_ADDR[23:1] : ROM_ADDRr[23:1];
+assign ROM_ADDR0 = (SD_DMA_TO_ROM) ? MCU_ADDR[0] : (ROM_SA) ? MAPPED_SNES_ADDR[0] : ROM_ADDRr[0];
+
+reg ROM_WEr;
+initial ROM_WEr = 1'b1;
+reg ROM_DOUT_ENr;
+initial ROM_DOUT_ENr = 1'b0;
+
+reg[17:0] SNES_DEAD_CNTr;
+initial SNES_DEAD_CNTr = 0;
+
 always @(posedge CLK2) begin
   if(MCU_RRQ) begin
     MCU_RD_PENDr <= 1'b1;
     RQ_MCU_RDYr <= 1'b0;
+    ROM_ADDRr <= MCU_ADDR;
   end else if(MCU_WRQ) begin
     MCU_WR_PENDr <= 1'b1;
     RQ_MCU_RDYr <= 1'b0;
+    ROM_ADDRr <= MCU_ADDR;
   end else if(STATE & (ST_MCU_RD_END | ST_MCU_WR_END)) begin
     MCU_RD_PENDr <= 1'b0;
     MCU_WR_PENDr <= 1'b0;
@@ -492,121 +560,125 @@ always @(posedge CLK2) begin
   end
 end
 
+always @(posedge CLK2) begin
+  if(~SNES_CPU_CLK) SNES_DEAD_CNTr <= SNES_DEAD_CNTr + 1;
+  else SNES_DEAD_CNTr <= 17'h0;
+end
+
+always @(posedge CLK2) begin
+  if(SNES_DEAD_CNTr > SNES_DEAD_TIMEOUT) SNES_DEADr <= 1'b1;
+  else if(SNES_CPU_CLK) SNES_DEADr <= 1'b0;
+end
+
 reg snes_wr_cycle;
 
 always @(posedge CLK2) begin
-  if(SNES_cycle_start & ~SNES_WR_start) begin
-    STATE <= ST_SNES_RD_ADDR;
-  end else if(SNES_WR_start) begin
-    STATE <= ST_SNES_WR_ADDR;
-  end else begin
-    case(STATE)
-	   ST_IDLE: begin
-		  ROM_ADDRr <= MAPPED_SNES_ADDR;
-		  if(MCU_RD_PENDr) STATE <= ST_MCU_RD_ADDR;
-		  else if(MCU_WR_PENDr) STATE <= ST_MCU_WR_ADDR;
-      else STATE <= ST_IDLE;
+  if(SNES_DEADr & SNES_CPU_CLK) STATE <= ST_IDLE; // interrupt+restart an ongoing MCU access when the SNES comes alive
+  else
+  case(STATE)
+    ST_IDLE: begin
+	   ROM_SAr <= 1'b1;
+		ROM_DOUT_ENr <= 1'b0;
+	   if(SNES_cycle_start & ~SNES_WRITE) begin
+		  STATE <= ST_SNES_WR_ADDR;
+		  if(IS_SAVERAM | IS_WRITABLE | IS_FLASHWR) begin
+		    ROM_WEr <= 1'b0;
+          ROM_DOUT_ENr <= 1'b1;
+        end
+		end else if(SNES_cycle_start) begin
+//		  STATE <= ST_SNES_RD_ADDR;		  
+        STATE <= ST_SNES_RD_END;
+        SNES_DOUTr <= (ROM_ADDR0 ? ROM_DATA[7:0] : ROM_DATA[15:8]);
+		end else if(SNES_DEADr & MCU_RD_PENDr) begin
+		  STATE <= ST_MCU_RD_ADDR;
+		end else if(SNES_DEADr & MCU_WR_PENDr) begin
+		  STATE <= ST_MCU_WR_ADDR;
 		end
-		ST_SNES_RD_ADDR: begin
-		  STATE <= ST_SNES_RD_WAIT;
-		  ST_MEM_DELAYr <= ROM_RD_WAIT;
-		end
-		ST_SNES_RD_WAIT: begin
-		  ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-		  if(ST_MEM_DELAYr == 4'h0) STATE <= ST_SNES_RD_END;
-		  else STATE <= ST_SNES_RD_WAIT;
-		  if(ROM_ADDR0) SNES_DINr <= ROM_DATA[7:0];
-		  else SNES_DINr <= ROM_DATA[15:8];
-		end
-		ST_SNES_RD_END: begin
-		  STATE <= ST_IDLE;
-		  if(ROM_ADDR0) SNES_DINr <= ROM_DATA[7:0];
-		  else SNES_DINr <= ROM_DATA[15:8];
-		end
-      ST_SNES_WR_ADDR: begin
-        ROM_WEr <= (!IS_FLASHWR & !IS_WRITABLE);
-        snes_wr_cycle <= 1'b1;
-		  STATE <= ST_SNES_WR_WAIT1;
-		  ST_MEM_DELAYr <= ROM_WR_WAIT1;
-		end
-		ST_SNES_WR_WAIT1: begin
-		  ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-		  if(ST_MEM_DELAYr == 4'h0) STATE <= ST_SNES_WR_DATA;
-		  else STATE <= ST_SNES_WR_WAIT1;
-		end
-		ST_SNES_WR_DATA: begin
-        ROM_DOUTr <= SNES_DATA;
+	 end
+	 ST_SNES_RD_ADDR: begin
+	   ST_MEM_DELAYr <= ROM_RD_WAIT;
+		STATE <= ST_SNES_RD_WAIT;
+	 end
+	 ST_SNES_RD_WAIT: begin
+	   ST_MEM_DELAYr <= ST_MEM_DELAYr - 1;
+//		if(ST_MEM_DELAYr == 0) begin
+//		end
+//		else STATE <= ST_SNES_RD_WAIT;
+	 end
+	 
+	 ST_SNES_WR_ADDR: begin
+	   ST_MEM_DELAYr <= ROM_WR_WAIT1;
+	   STATE <= ST_SNES_WR_WAIT1;
+	 end
+	 ST_SNES_WR_WAIT1: begin
+	   ST_MEM_DELAYr <= ST_MEM_DELAYr - 1;
+		if(ST_MEM_DELAYr == 0) begin
 		  ST_MEM_DELAYr <= ROM_WR_WAIT2;
-		  STATE <= ST_SNES_WR_WAIT2;
+        STATE <= ST_SNES_WR_WAIT2;
+		  ROM_DOUTr <= SNES_DATA;
 		end
-      ST_SNES_WR_WAIT2: begin
-		  ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-		  if(ST_MEM_DELAYr == 4'h0) STATE <= ST_SNES_WR_END;
-		  else STATE <= ST_SNES_WR_WAIT2;
-		end
-		ST_SNES_WR_END: begin
-		  STATE <= ST_IDLE;
+		else STATE <= ST_SNES_WR_WAIT1;
+	 end
+	 ST_SNES_WR_WAIT2: begin
+	   ST_MEM_DELAYr <= ST_MEM_DELAYr - 1;
+		if(ST_MEM_DELAYr == 0) begin
+        STATE <= ST_SNES_WR_END;
 		  ROM_WEr <= 1'b1;
-		  snes_wr_cycle <= 1'b0;
 		end
-		ST_MCU_RD_ADDR: begin
-		  ROM_ADDRr <= MCU_ADDR;
-		  STATE <= ST_MCU_RD_WAIT;
-		  ST_MEM_DELAYr <= ROM_RD_WAIT_MCU;
+		else STATE <= ST_SNES_WR_WAIT2;
+    end
+	 ST_SNES_RD_END, ST_SNES_WR_END: begin
+	   ROM_DOUT_ENr <= 1'b0;		
+      if(MCU_RD_PENDr) begin
+        STATE <= ST_MCU_RD_ADDR;
+      end else if(MCU_WR_PENDr) begin
+        STATE <= ST_MCU_WR_ADDR;
+      end else STATE <= ST_IDLE;
+    end
+    ST_MCU_RD_ADDR: begin
+      ROM_SAr <= 1'b0;
+		ST_MEM_DELAYr <= ROM_RD_WAIT_MCU;
+		STATE <= ST_MCU_RD_WAIT;
+	 end
+	 ST_MCU_RD_WAIT: begin
+	   ST_MEM_DELAYr <= ST_MEM_DELAYr - 1;
+		if(ST_MEM_DELAYr == 0) begin
+        STATE <= ST_MCU_RD_END;
 		end
-		ST_MCU_RD_WAIT: begin
-		  ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-		  if(ST_MEM_DELAYr == 4'h0) begin
-		    STATE <= ST_MCU_RD_WAIT2;
-			 ST_MEM_DELAYr <= 4'h2;
-		  end
-		  else STATE <= ST_MCU_RD_WAIT;
-		  if(ROM_ADDR0) MCU_DINr <= ROM_DATA[7:0];
-		  else MCU_DINr <= ROM_DATA[15:8];
-      end
-		ST_MCU_RD_WAIT2: begin
-		  ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-		  if(ST_MEM_DELAYr == 4'h0) begin
-		    STATE <= ST_MCU_RD_END;
-		  end else STATE <= ST_MCU_RD_WAIT2;
+		else STATE <= ST_MCU_RD_WAIT;
+	 end
+	 ST_MCU_RD_END: begin
+      MCU_DINr <= ROM_ADDRr[0] ? ROM_DATA[7:0] : ROM_DATA[15:8];
+	   STATE <= ST_IDLE;
+	 end
+	 
+	 ST_MCU_WR_ADDR: begin
+      ROM_DOUTr <= MCU_DOUT;
+      ROM_SAr <= 1'b0;
+	   ST_MEM_DELAYr <= ROM_WR_WAIT_MCU;
+		STATE <= ST_MCU_WR_WAIT;
+		ROM_DOUT_ENr <= 1'b1;
+		ROM_WEr <= 1'b0;
+	 end
+	 ST_MCU_WR_WAIT: begin
+	   ST_MEM_DELAYr <= ST_MEM_DELAYr - 1;
+		if(ST_MEM_DELAYr == 0) begin
+		  ROM_WEr <= 1'b1;
+		  STATE <= ST_MCU_WR_END;
 		end
-		ST_MCU_RD_END: begin
-		  STATE <= ST_IDLE;
-		end
-		ST_MCU_WR_ADDR: begin
-		  ROM_ADDRr <= MCU_ADDR;
-		  STATE <= ST_MCU_WR_WAIT;
-		  ST_MEM_DELAYr <= ROM_WR_WAIT_MCU;
-		  ROM_DOUTr <= MCU_DOUT;
-		  ROM_WEr <= 1'b0;
-		end
-		ST_MCU_WR_WAIT: begin
-		  ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-		  if(ST_MEM_DELAYr == 4'h0) begin
-          ROM_WEr <= 1'b1;
-		    STATE <= ST_MCU_WR_WAIT2;
-			 ST_MEM_DELAYr <= 4'h2;
-		  end
-		  else STATE <= ST_MCU_WR_WAIT;
-      end
-		ST_MCU_WR_WAIT2: begin
-		  ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-		  if(ST_MEM_DELAYr == 4'h0) begin
-		    STATE <= ST_MCU_WR_END;
-        end else STATE <= ST_MCU_WR_WAIT2;
-		end
-		ST_MCU_WR_END: begin
-		  STATE <= ST_IDLE;
-		end
-
-    endcase
-  end
+		else STATE <= ST_MCU_WR_WAIT;	 
+	 end
+	 ST_MCU_WR_END: begin
+		ROM_DOUT_ENr <= 1'b0;
+	   STATE <= ST_IDLE;
+	 end
+  endcase
 end
 
-always @(posedge SYSCLK2) begin
-  if(SNES_PARD_start & r213f_enable) begin
-    r213f_forceread <= 1'b1;
-    r213f_delay <= 3'b001;
+always @(posedge CLK2) begin
+  if(SNES_cycle_end) r213f_forceread <= 1'b1;
+  else if(SNES_PARD_start & r213f_enable) begin
+    r213f_delay <= 3'b000;
     r213f_state <= 2'b10;
   end else if(r213f_state == 2'b10) begin
     r213f_delay <= r213f_delay - 1;
@@ -618,46 +690,98 @@ always @(posedge SYSCLK2) begin
   end
 end
 
+always @(posedge CLK2) begin
+  if(SNES_WR_end & snescmd_wr_enable) begin
+    snescmd_regs[SNES_ADDR[3:0]] <= SNES_DATA;
+  end
+end
+
+reg ROM_WE_1;
+reg MCU_WRITE_1;
+
+always @(posedge CLK2) begin
+  ROM_WE_1 <= ROM_WE;
+  MCU_WRITE_1<= MCU_WRITE;
+end
+
 assign ROM_DATA[7:0] = ROM_ADDR0
-                       ?(SD_DMA_TO_ROM ? (!MCU_WRITE ? MCU_DOUT : 8'bZ)
-                                        : (!ROM_WE ? ROM_DOUTr : 8'bZ)
+                       ?(SD_DMA_TO_ROM ? (!MCU_WRITE_1 ? MCU_DOUT : 8'bZ)
+							                   /*: ((~SNES_WRITE & (IS_WRITABLE | IS_FLASHWR)) ? SNES_DATA */
+                                        : (ROM_DOUT_ENr ? ROM_DOUTr : 8'bZ) //)
                         )
                        :8'bZ;
 
 assign ROM_DATA[15:8] = ROM_ADDR0 ? 8'bZ
-                        :(SD_DMA_TO_ROM ? (!MCU_WRITE ? MCU_DOUT : 8'bZ)
-                                         : (!ROM_WE ? ROM_DOUTr : 8'bZ)
+                        :(SD_DMA_TO_ROM ? (!MCU_WRITE_1 ? MCU_DOUT : 8'bZ)
+								                 /*:  ((~SNES_WRITE & (IS_WRITABLE | IS_FLASHWR)) ? SNES_DATA */
+                                         : (ROM_DOUT_ENr ? ROM_DOUTr : 8'bZ) //)
                          );
 
 assign ROM_WE = SD_DMA_TO_ROM
                 ?MCU_WRITE
-                :ROM_WEr | (ASSERT_SNES_ADDR & ~snes_wr_cycle);
+                :/*(SNES_FAKE_CLK & (IS_WRITABLE | IS_FLASHWR)) ? SNES_WRITE :*/ ROM_WEr;
 
 // OE always active. Overridden by WE when needed.
 assign ROM_OE = 1'b0;
 
 assign ROM_CE = 1'b0;
 
-assign ROM_BHE = !ROM_WE ? ROM_ADDR0 : 1'b0;
-assign ROM_BLE = !ROM_WE ? !ROM_ADDR0 : 1'b0;
+assign ROM_BHE = /*(~SD_DMA_TO_ROM & ~ROM_WE & ~ROM_SA) ?*/ ROM_ADDR0 /*: 1'b0*/;
+assign ROM_BLE = /*(~SD_DMA_TO_ROM & ~ROM_WE & ~ROM_SA) ?*/ !ROM_ADDR0 /*: 1'b0*/;
 
 assign SNES_DATABUS_OE = (dspx_enable | dspx_dp_enable) ? 1'b0 :
                          msu_enable ? 1'b0 :
                          bsx_data_ovr ? (SNES_READ & SNES_WRITE) :
                          srtc_enable ? (SNES_READ & SNES_WRITE) :
+								 bs_page_enable ? (SNES_READ) :
                          r213f_enable & !SNES_PARD ? 1'b0 :
+								 (snescmd_wr_enable | snescmd_rd_enable) & !SNES_PARD ? 1'b0 :
                          ((IS_ROM & SNES_CS)
                           |(!IS_ROM & !IS_SAVERAM & !IS_WRITABLE & !IS_FLASHWR)
-                          |(SNES_READ & SNES_WRITE)
+                          |(SNES_READr[0] & SNES_WRITEr[0])
                          );
 
-assign SNES_DATABUS_DIR = (!SNES_READ | (!SNES_PARD & r213f_enable))
-                           ? 1'b1 ^ r213f_forceread
+assign SNES_DATABUS_DIR = (!SNES_READr[0] | (!SNES_PARD & (r213f_enable | snescmd_rd_enable)))
+                           ? 1'b1 ^ (r213f_forceread & r213f_enable & ~SNES_PARD)
                            : 1'b0;
 
-assign IRQ_DIR = 1'b0;
-assign SNES_IRQ = 1'bZ;
+assign SNES_IRQ = 1'b0;
 
 assign p113_out = 1'b0;
 
+/*
+wire [35:0] CONTROL0;
+
+icon icon (
+    .CONTROL0(CONTROL0) // INOUT BUS [35:0]
+);
+
+ila_srtc ila (
+    .CONTROL(CONTROL0), // INOUT BUS [35:0]
+    .CLK(CLK2), // IN
+    .TRIG0(SNES_ADDR), // IN BUS [23:0]
+    .TRIG1(SNES_DATA), // IN BUS [7:0]
+    .TRIG2({SNES_READ, SNES_WRITE, SNES_CPU_CLK, SNES_cycle_start, SNES_cycle_end, SNES_DEADr, MCU_RRQ, MCU_WRQ, MCU_RDY, ROM_WEr, ROM_WE, ROM_DOUT_ENr, ROM_SA, DBG_mcu_nextaddr, SNES_DATABUS_DIR, SNES_DATABUS_OE}),	 // IN BUS [15:0]
+    .TRIG3({bsx_data_ovr, SPI_SCK, SPI_MISO, SPI_MOSI, spi_cmd_ready, spi_param_ready, spi_input_data, SD_DAT}), // IN BUS [17:0]
+    .TRIG4(ROM_ADDRr), // IN BUS [23:0]
+    .TRIG5(ROM_DATA), // IN BUS [15:0]
+    .TRIG6(MCU_DINr), // IN BUS [7:0]
+	 .TRIG7(spi_byte_cnt[3:0])
+);
+*/
+/*
+ila_srtc ila (
+    .CONTROL(CONTROL0), // INOUT BUS [35:0]
+    .CLK(CLK2), // IN
+    .TRIG0(SD_DMA_DBG_cyclecnt), // IN BUS [23:0]
+    .TRIG1(SD_DMA_SRAM_DATA), // IN BUS [7:0]
+    .TRIG2({SPI_SCK, SPI_MOSI, SPI_MISO, spi_cmd_ready, SD_DMA_SRAM_WE, SD_DMA_EN, SD_CLK, SD_DAT, SD_DMA_NEXTADDR, SD_DMA_STATUS, 3'b000}),	 // IN BUS [15:0]
+    .TRIG3({spi_cmd_data, spi_param_data}), // IN BUS [17:0]
+    .TRIG4(ROM_ADDRr), // IN BUS [23:0]
+    .TRIG5(ROM_DATA), // IN BUS [15:0]
+    .TRIG6(MCU_DINr), // IN BUS [7:0]
+	 .TRIG7(ST_MEM_DELAYr)
+);
+*/
+
 endmodule

verilog/sd2snes/mcu_cmd.v

@@ -97,7 +97,10 @@ module mcu_cmd(
   
   output reg region_out,
   // SNES sync/clk
-  input snes_sysclk
+  input snes_sysclk,
+  
+  // debug
+  output DBG_mcu_nextaddr
 );
 
 initial begin
@@ -140,12 +143,13 @@ reg [55:0] rtc_data_out_buf;
 reg rtc_pgm_we_buf;
 
 reg srtc_reset_buf;
+initial srtc_reset_buf = 0;
 
 reg [31:0] SNES_SYSCLK_FREQ_BUF;
 
 reg [7:0] MCU_DATA_OUT_BUF;
 reg [7:0] MCU_DATA_IN_BUF;
-reg [1:0] mcu_nextaddr_buf;
+reg [2:0] mcu_nextaddr_buf;
 
 wire mcu_nextaddr;
 
@@ -198,7 +202,7 @@ always @(posedge clk) begin
         SD_DMA_PARTIALr <= cmd_data[2];
       end
       4'h8: SD_DMA_TGTr <= 2'b00;
-      4'h9: SD_DMA_TGTr <= cmd_data[1:0]; // not implemented
+      4'h9: SD_DMA_TGTr <= 2'b00; // cmd_data[1:0]; // not implemented
 //      4'hE:
 //      select memory unit
     endcase
@@ -410,9 +414,9 @@ end
 
 // value fetch during last SPI bit
 always @(posedge clk) begin
-  if (cmd_data[7:4] == 4'h8 && mcu_nextaddr_buf == 2'b01)
+  if (cmd_data[7:4] == 4'h8 && mcu_nextaddr)
     MCU_DATA_IN_BUF <= mcu_data_in;
-  else if (spi_bit_cnt == 3'h7) begin
+  else if (cmd_ready | param_ready /* bit_cnt == 7 */) begin
     if (cmd_data[7:0] == 8'hF0)
       MCU_DATA_IN_BUF <= 8'hA5;
     else if (cmd_data[7:0] == 8'hF1)
@@ -462,7 +466,7 @@ end
 
 // nextaddr pulse generation
 always @(posedge clk) begin
-  mcu_nextaddr_buf <= {mcu_nextaddr_buf[0], mcu_rq_rdy};
+  mcu_nextaddr_buf <= {mcu_nextaddr_buf[1:0], mcu_rq_rdy};
 end
 
 parameter ST_RQ = 2'b01;
@@ -545,4 +549,5 @@ assign mcu_mapper = MAPPER_BUF;
 assign rom_mask_out = ROM_MASK;
 assign saveram_mask_out = SAVERAM_MASK;
 
+assign DBG_mcu_nextaddr = mcu_nextaddr;
 endmodule

verilog/sd2snes/msu.v

@@ -38,7 +38,13 @@ module msu(
   input [5:0] status_set_bits,
   input status_reset_we,
   input [13:0] msu_address_ext,
-  input msu_address_ext_write
+  input msu_address_ext_write,
+  
+  output DBG_msu_reg_oe_rising,
+  output DBG_msu_reg_oe_falling,
+  output DBG_msu_reg_we_rising,
+  output [13:0] DBG_msu_address,
+  output DBG_msu_address_ext_write_rising
 );
 
 reg [2:0] reg_addr_r [3:0];
@@ -56,13 +62,15 @@ wire status_reset_en = (status_reset_we_r == 2'b01);
 
 reg [13:0] msu_address_r;
 wire [13:0] msu_address = msu_address_r;
+initial msu_address_r = 13'b0;
 
 wire [7:0] msu_data;
+reg [7:0] msu_data_r;
 
-reg [1:0] msu_address_ext_write_sreg;
+reg [2:0] msu_address_ext_write_sreg;
 always @(posedge clkin)
-  msu_address_ext_write_sreg <= {msu_address_ext_write_sreg[0], msu_address_ext_write};
-wire msu_address_ext_write_rising = (msu_address_ext_write_sreg[1:0] == 2'b01);
+  msu_address_ext_write_sreg <= {msu_address_ext_write_sreg[1:0], msu_address_ext_write};
+wire msu_address_ext_write_rising = (msu_address_ext_write_sreg[2:1] == 2'b01);
 
 reg [4:0] reg_enable_sreg;
 initial reg_enable_sreg = 5'b11111;
@@ -70,11 +78,12 @@ always @(posedge clkin) reg_enable_sreg <= {reg_enable_sreg[3:0], enable};
 
 reg [5:0] reg_oe_sreg;
 always @(posedge clkin) reg_oe_sreg <= {reg_oe_sreg[4:0], reg_oe};
-wire reg_oe_rising = reg_enable_sreg[4] && (reg_oe_sreg[5:0] == 6'b000001);
+wire reg_oe_rising = reg_enable_sreg[4] && (reg_oe_sreg[5:1] == 5'b00001);
+wire reg_oe_falling = reg_enable_sreg[1] && (reg_oe_sreg[5:1] == 5'b11110);
 
 reg [5:0] reg_we_sreg;
 always @(posedge clkin) reg_we_sreg <= {reg_we_sreg[4:0], reg_we};
-wire reg_we_rising = reg_enable_sreg[4] && (reg_we_sreg[5:0] == 6'b000001);
+wire reg_we_rising = reg_enable_sreg[4] && (reg_we_sreg[5:1] == 5'b00001);
 
 reg [31:0] addr_out_r;
 assign addr_out = addr_out_r;
@@ -93,14 +102,27 @@ reg audio_busy_r;
 reg data_start_r;
 reg data_busy_r;
 reg ctrl_start_r;
+reg audio_error_r;
 reg [1:0] audio_ctrl_r;
 reg [1:0] audio_status_r;
 
 initial begin
-  audio_busy_r <= 1'b1;
-  data_busy_r <= 1'b1;
+  audio_busy_r = 1'b1;
+  data_busy_r = 1'b1;
+  audio_error_r = 1'b0;
+  volume_r = 8'h00;
+  addr_out_r = 32'h00000000;
+  track_out_r = 16'h0000;
+  data_start_r = 1'b0;
+  audio_start_r = 1'b0;
 end
 
+assign DBG_msu_address = msu_address;
+assign DBG_msu_reg_oe_rising = reg_oe_rising;
+assign DBG_msu_reg_oe_falling = reg_oe_falling;
+assign DBG_msu_reg_we_rising = reg_we_rising;
+assign DBG_msu_address_ext_write_rising = msu_address_ext_write_rising;
+
 assign status_out = {msu_address_r[13], // 6
                      audio_start_r,     // 5
                      data_start_r,      // 4
@@ -124,8 +146,8 @@ reg [7:0] data_out_r;
 assign reg_data_out = data_out_r;
 
 always @(posedge clkin) begin
-  case(reg_addr_r[3])
-    3'h0: data_out_r <= {data_busy_r, audio_busy_r, audio_status_r, 4'b0001};
+  case(reg_addr_r[1])
+    3'h0: data_out_r <= {data_busy_r, audio_busy_r, audio_status_r, audio_error_r, 3'b001};
     3'h1: data_out_r <= msu_data;
     3'h2: data_out_r <= 8'h53;
     3'h3: data_out_r <= 8'h2d;
@@ -138,7 +160,7 @@ end
 
 always @(posedge clkin) begin
   if(reg_we_rising) begin
-    case(reg_addr_r[3])
+    case(reg_addr_r[1])
       3'h0: addr_out_r[7:0] <= reg_data_in;
       3'h1: addr_out_r[15:8] <= reg_data_in;
       3'h2: addr_out_r[23:16] <= reg_data_in;
@@ -173,7 +195,7 @@ always @(posedge clkin) begin
     data_busy_r <= (data_busy_r | status_set_bits[4]) & ~status_reset_bits[4];
     if(status_reset_bits[4]) data_start_r <= 1'b0;
 
-//    volume_start_r <= (volume_start_r | status_set_bits[3]) & ~status_reset_bits[3];
+    audio_error_r <= (audio_error_r | status_set_bits[3]) & ~status_reset_bits[3];
 
     audio_status_r <= (audio_status_r | status_set_bits[2:1]) & ~status_reset_bits[2:1];
 

verilog/sd2snes/rtc.v

@@ -42,7 +42,7 @@ reg [31:0] tick_cnt;
 
 always @(posedge clkin) begin
   tick_cnt <= tick_cnt + 1;
-  if((tick_cnt == 24000000) || pgm_we_rising) tick_cnt <= 0;
+  if((tick_cnt == 22000000) || pgm_we_rising) tick_cnt <= 0;
 end
 
 assign rtc_data = rtc_data_out_r;

verilog/sd2snes/sd2snes.xise

@@ -9,107 +9,91 @@
     <!-- along with the project source files, is sufficient to open and    -->
     <!-- implement in ISE Project Navigator.                               -->
     <!--                                                                   -->
-    <!-- Copyright (c) 1995-2011 Xilinx, Inc.  All rights reserved. -->
+    <!-- Copyright (c) 1995-2012 Xilinx, Inc.  All rights reserved. -->
   </header>
 
-  <version xil_pn:ise_version="13.2" xil_pn:schema_version="2"/>
+  <version xil_pn:ise_version="14.1" xil_pn:schema_version="2"/>
 
   <files>
     <file xil_pn:name="address.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="1"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="17"/>
     </file>
     <file xil_pn:name="bsx.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="2"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="16"/>
     </file>
     <file xil_pn:name="clk_test.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="3"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="6"/>
     </file>
     <file xil_pn:name="dac.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="4"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="15"/>
     </file>
     <file xil_pn:name="dcm.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="5"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="14"/>
     </file>
     <file xil_pn:name="main.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="6"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="18"/>
     </file>
     <file xil_pn:name="mcu_cmd.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="7"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="13"/>
     </file>
     <file xil_pn:name="msu.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="8"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="12"/>
     </file>
     <file xil_pn:name="rtc.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="9"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="11"/>
     </file>
     <file xil_pn:name="sd_dma.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="10"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="10"/>
     </file>
     <file xil_pn:name="spi.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="11"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="9"/>
     </file>
     <file xil_pn:name="srtc.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="12"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="8"/>
     </file>
     <file xil_pn:name="upd77c25.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="4"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="13"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="7"/>
     </file>
-    <file xil_pn:name="main.ucf" xil_pn:type="FILE_UCF">
-      <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
-    </file>
-    <file xil_pn:name="main_tf.v" xil_pn:type="FILE_VERILOG"/>
     <file xil_pn:name="updtest_tf.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
-      <association xil_pn:name="PostMapSimulation" xil_pn:seqID="19"/>
-      <association xil_pn:name="PostRouteSimulation" xil_pn:seqID="19"/>
-      <association xil_pn:name="PostTranslateSimulation" xil_pn:seqID="19"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="14"/>
+      <association xil_pn:name="PostMapSimulation" xil_pn:seqID="14"/>
+      <association xil_pn:name="PostRouteSimulation" xil_pn:seqID="14"/>
+      <association xil_pn:name="PostTranslateSimulation" xil_pn:seqID="14"/>
     </file>
     <file xil_pn:name="ipcore_dir/upd77c25_datram.xco" xil_pn:type="FILE_COREGEN">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="3"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="15"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="3"/>
     </file>
     <file xil_pn:name="ipcore_dir/upd77c25_datrom.xco" xil_pn:type="FILE_COREGEN">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="2"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="16"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="2"/>
     </file>
     <file xil_pn:name="ipcore_dir/upd77c25_pgmrom.xco" xil_pn:type="FILE_COREGEN">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="1"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="17"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="1"/>
     </file>
     <file xil_pn:name="ipcore_dir/dac_buf.xco" xil_pn:type="FILE_COREGEN">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="18"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="5"/>
     </file>
     <file xil_pn:name="ipcore_dir/msu_databuf.xco" xil_pn:type="FILE_COREGEN">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="19"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="4"/>
     </file>
-    <file xil_pn:name="ipcore_dir/upd77c25_datram.xise" xil_pn:type="FILE_COREGENISE">
-      <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
-    </file>
-    <file xil_pn:name="ipcore_dir/upd77c25_datrom.xise" xil_pn:type="FILE_COREGENISE">
-      <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
-    </file>
-    <file xil_pn:name="ipcore_dir/upd77c25_pgmrom.xise" xil_pn:type="FILE_COREGENISE">
-      <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
-    </file>
-    <file xil_pn:name="ipcore_dir/dac_buf.xise" xil_pn:type="FILE_COREGENISE">
-      <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
-    </file>
-    <file xil_pn:name="ipcore_dir/msu_databuf.xise" xil_pn:type="FILE_COREGENISE">
+    <file xil_pn:name="main.ucf" xil_pn:type="FILE_UCF">
       <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
     </file>
   </files>
@@ -377,8 +361,8 @@
     <property xil_pn:name="Specify Top Level Instance Names Post-Route" xil_pn:value="work.updtest" xil_pn:valueState="default"/>
     <property xil_pn:name="Specify Top Level Instance Names Post-Translate" xil_pn:value="work.updtest" xil_pn:valueState="default"/>
     <property xil_pn:name="Speed Grade" xil_pn:value="-4" xil_pn:valueState="non-default"/>
-    <property xil_pn:name="Starting Placer Cost Table (1-100) Map" xil_pn:value="2" xil_pn:valueState="non-default"/>
-    <property xil_pn:name="Starting Placer Cost Table (1-100) Par" xil_pn:value="2" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Starting Placer Cost Table (1-100) Map" xil_pn:value="11" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Starting Placer Cost Table (1-100) Par" xil_pn:value="11" xil_pn:valueState="non-default"/>
     <property xil_pn:name="Structure window" xil_pn:value="true" xil_pn:valueState="default"/>
     <property xil_pn:name="Synthesis Tool" xil_pn:value="XST (VHDL/Verilog)" xil_pn:valueState="default"/>
     <property xil_pn:name="Target Simulator" xil_pn:value="Please Specify" xil_pn:valueState="default"/>
@@ -449,9 +433,7 @@
     <property xil_pn:name="PROP_intWorkingDirUsed" xil_pn:value="No" xil_pn:valueState="non-default"/>
   </properties>
 
-  <bindings>
-    <binding xil_pn:location="/main" xil_pn:name="main.ucf"/>
-  </bindings>
+  <bindings/>
 
   <libraries/>
 

verilog/sd2snes/sd_dma.v

@@ -31,7 +31,10 @@ module sd_dma(
   input [10:0] SD_DMA_PARTIAL_START,
   input [10:0] SD_DMA_PARTIAL_END,
   input SD_DMA_START_MID_BLOCK,
-  input SD_DMA_END_MID_BLOCK
+  input SD_DMA_END_MID_BLOCK,
+  
+  output [10:0] DBG_cyclecnt,
+  output [2:0] DBG_clkcnt
 );
 
 reg [10:0] SD_DMA_STARTr;
@@ -74,7 +77,11 @@ assign SD_DMA_SRAM_DATA = SD_DMA_SRAM_DATAr;
 reg [2:0] clkcnt;
 initial clkcnt = 3'b000;
 reg [1:0] SD_CLKr;
-always @(posedge CLK) SD_CLKr <= {SD_CLKr[0], clkcnt[1]};
+initial SD_CLKr = 3'b111;
+always @(posedge CLK)
+  if(SD_DMA_EN_rising) SD_CLKr <= 3'b111;
+  else SD_CLKr <= {SD_CLKr[0], clkcnt[1]};
+
 assign SD_CLK = SD_DMA_STATUSr ? SD_CLKr[1] : 1'bZ;
 
 always @(posedge CLK) begin
@@ -116,20 +123,20 @@ always @(posedge CLK) begin
   if(SD_DMA_STATUSr) begin
     case(clkcnt[2:0])
       3'h0: begin
-        SD_DMA_SRAM_WEr <= 1'b1;
         SD_DMA_SRAM_DATAr[7:4] <= SD_DAT;
         if(cyclecnt>SD_DMA_STARTr && cyclecnt <= SD_DMA_ENDr) SD_DMA_NEXTADDRr <= 1'b1;
       end
-      3'h1:
+      3'h1: begin
         SD_DMA_NEXTADDRr <= 1'b0;
-//  3'h2:
-      3'h3:
-        if(cyclecnt>=SD_DMA_STARTr && cyclecnt < SD_DMA_ENDr) SD_DMA_SRAM_WEr <= 1'b0;
+		end
+      3'h2: if(cyclecnt>=SD_DMA_STARTr && cyclecnt < SD_DMA_ENDr) SD_DMA_SRAM_WEr <= 1'b0;
+//  3'h3:
       3'h4:
         SD_DMA_SRAM_DATAr[3:0] <= SD_DAT;
 //  3'h5:
 //  3'h6:
-//  3'h7:
+      3'h7:
+		  SD_DMA_SRAM_WEr <= 1'b1;
     endcase
   end
 end

verilog/sd2snes/spi.v

@@ -39,15 +39,27 @@ module spi(
 reg [7:0] cmd_data_r;
 reg [7:0] param_data_r;
 
-reg [1:0] SSELr;  always @(posedge clk) SSELr <= {SSELr[0], SSEL};
+reg [2:0] SSELr;
+reg [2:0] SSELSCKr;
+
+always @(posedge clk) SSELr <= {SSELr[1:0], SSEL};
+always @(posedge SCK) SSELSCKr <= {SSELSCKr[1:0], SSEL};
+
+wire SSEL_inactive = SSELr[1];
 wire SSEL_active = ~SSELr[1];  // SSEL is active low
-wire SSEL_startmessage = (SSELr[1:0]==2'b10);  // message starts at falling edge
-wire SSEL_endmessage = (SSELr[1:0]==2'b01);  // message stops at rising edge
+wire SSEL_startmessage = (SSELr[2:1]==2'b10);  // message starts at falling edge
+wire SSEL_endmessage = (SSELr[2:1]==2'b01);  // message stops at rising edge
 assign endmessage = SSEL_endmessage;
 assign startmessage = SSEL_startmessage;
 
 // bit count for one SPI byte + byte count for the message
 reg [2:0] bitcnt;
+initial bitcnt = 3'b000;
+wire bitcnt_msb = bitcnt[2];
+reg [2:0] bitcnt_wrap_r;
+always @(posedge clk) bitcnt_wrap_r <= {bitcnt_wrap_r[1:0], bitcnt_msb};
+wire byte_received_sync = (bitcnt_wrap_r[2:1] == 2'b10);
+
 reg [31:0] byte_cnt_r;
 
 reg byte_received;  // high when a byte has been received
@@ -56,23 +68,26 @@ reg [7:0] byte_data_received;
 assign bit_cnt = bitcnt;
 
 always @(posedge SCK) begin
-  if(SSEL) bitcnt <= 3'b000;
-  else begin
-    bitcnt <= bitcnt + 3'b001;
+  if(SSELSCKr[1]) bitcnt <= 3'b000;
+  else bitcnt <= bitcnt + 3'b001;
+end
+
+always @(posedge SCK) begin
+  if(~SSELSCKr[1]) begin
 	 byte_data_received <= {byte_data_received[6:0], MOSI};
   end
-  if(~SSEL && bitcnt==3'b111) byte_received <= 1'b1;
+  if(~SSELSCKr[1] && bitcnt==3'b111) byte_received <= 1'b1;
   else byte_received <= 1'b0;
 end
 
-reg [1:0] byte_received_r;
-always @(posedge clk) byte_received_r <= {byte_received_r[0], byte_received};
-wire byte_received_sync = (byte_received_r == 2'b01);
+//reg [2:0] byte_received_r;
+//always @(posedge clk) byte_received_r <= {byte_received_r[1:0], byte_received};
+//wire byte_received_sync = (byte_received_r[2:1] == 2'b01);
 
 always @(posedge clk) begin
-  if(~SSEL_active)
+  if(SSEL_inactive) begin
     byte_cnt_r <= 16'h0000;
-  else if(byte_received_sync) begin
+  end else if(byte_received_sync) begin
     byte_cnt_r <= byte_cnt_r + 16'h0001;
   end
 end

verilog/sd2snes/srtc.v

@@ -29,7 +29,13 @@ module srtc(
   input reg_oe,
   input enable,
   output rtc_we,
-  input reset
+  input reset,
+  
+  /* DEBUG */
+  output [4:0] srtc_state,
+  output srtc_reg_we_rising,
+  output [3:0] srtc_rtc_ptr,
+  output [5:0] srtc_we_sreg
 );
 
 reg [59:0] rtc_data_r;
@@ -44,13 +50,14 @@ reg rtc_we_r;
 assign rtc_we = rtc_we_r;
 assign data_out = data_out_r;
 
-reg [3:0] reg_oe_sreg;
-always @(posedge clkin) reg_oe_sreg <= {reg_oe_sreg[2:0], reg_oe};
-wire reg_oe_falling = (reg_oe_sreg == 4'b1000);
+reg [5:0] reg_oe_sreg;
+always @(posedge clkin) reg_oe_sreg <= {reg_oe_sreg[4:0], reg_oe};
+wire reg_oe_falling = (reg_oe_sreg[5:1] == 5'b11110);
+wire reg_oe_rising = (reg_oe_sreg[5:1] == 5'b00001);
 
-reg [1:0] reg_we_sreg;
-always @(posedge clkin) reg_we_sreg <= {reg_we_sreg[0], reg_we};
-wire reg_we_rising = (reg_we_sreg[1:0] == 2'b01);
+reg [5:0] reg_we_sreg;
+always @(posedge clkin) reg_we_sreg <= {reg_we_sreg[4:0], reg_we};
+wire reg_we_rising = (reg_we_sreg[5:1] == 5'b00001);
 
 reg [1:0] reset_sreg;
 always @(posedge clkin) reset_sreg <= {reset_sreg[0], reset};
@@ -64,27 +71,37 @@ parameter SRTC_COMMAND = 5'b00100;
 parameter SRTC_WRITE = 5'b01000;
 parameter SRTC_WRITE2 = 5'b10000;
 
+reg [3:0] data_in_r;
+
+reg [3:0] addr_in_r;
+always @(posedge clkin) addr_in_r <= {addr_in_r[2:0], addr_in};
+
+assign srtc_reg_we_rising = reg_we_rising;
+assign srtc_state = mode_r;
+assign srtc_rtc_ptr = rtc_ptr;
+assign srtc_we_sreg = reg_we_sreg;
+
 initial begin
   rtc_we_r = 0;
-  mode_r <= SRTC_READ;
-  rtc_ptr <= 4'hf;
+  mode_r = SRTC_READ;
+  rtc_ptr = 4'hf;
+  data_out_r = 8'h00;
+end
+
+//always @(posedge clkin) data_in_r <= data_in;
+always @(posedge clkin) begin
+  if(~reg_we) data_in_r <= data_in;
 end
 
 always @(posedge clkin) begin
   if(reset_rising) begin
     mode_r <= SRTC_READ;
     rtc_ptr <= 4'hf;
-  end else if(mode_r == SRTC_WRITE2) begin
-    we_countdown_r <= we_countdown_r - 1;
-    if (we_countdown_r == 3'b000) begin
-      mode_r <= SRTC_WRITE;
-      rtc_we_r <= 0;
-    end
   end else if(reg_we_rising && enable) begin
-    case (addr_in)
+    case (addr_in_r[0])
 //     1'b0: // data register is read only
       1'b1: // control register
-        case (data_in)
+        case (data_in_r)
           4'hd: begin
             mode_r <= SRTC_READ;
             rtc_ptr <= 4'hf;
@@ -92,11 +109,9 @@ always @(posedge clkin) begin
           4'he: begin
             mode_r <= SRTC_COMMAND;
           end
-          4'hf: begin
-          end
           default: begin
             if(mode_r == SRTC_COMMAND) begin
-              case (data_in)
+              case (data_in_r)
                 4'h0: begin
                   mode_r <= SRTC_WRITE;
                   rtc_data_out_r <= rtc_data_in;
@@ -112,38 +127,38 @@ always @(posedge clkin) begin
             end else if(mode_r == SRTC_WRITE) begin
               rtc_ptr <= rtc_ptr + 1;
               case(rtc_ptr)
-                0: rtc_data_out_r[3:0] <= data_in;
-                1: rtc_data_out_r[7:4] <= data_in;
-                2: rtc_data_out_r[11:8] <= data_in;
-                3: rtc_data_out_r[15:12] <= data_in;
-                4: rtc_data_out_r[19:16] <= data_in;
-                5: rtc_data_out_r[23:20] <= data_in;
-                6: rtc_data_out_r[27:24] <= data_in;
-                7: rtc_data_out_r[31:28] <= data_in;
+                0: rtc_data_out_r[3:0] <= data_in_r;
+                1: rtc_data_out_r[7:4] <= data_in_r;
+                2: rtc_data_out_r[11:8] <= data_in_r;
+                3: rtc_data_out_r[15:12] <= data_in_r;
+                4: rtc_data_out_r[19:16] <= data_in_r;
+                5: rtc_data_out_r[23:20] <= data_in_r;
+                6: rtc_data_out_r[27:24] <= data_in_r;
+                7: rtc_data_out_r[31:28] <= data_in_r;
                 8: begin
-                  rtc_data_out_r[35:32] <= (data_in < 10)
-                                           ? data_in
-                                           : data_in - 10;
-                  rtc_data_out_r[39:36] <= data_in < 10 ? 0 : 1;
+                  rtc_data_out_r[35:32] <= (data_in_r < 10)
+                                           ? data_in_r
+                                           : data_in_r - 10;
+                  rtc_data_out_r[39:36] <= data_in_r < 10 ? 0 : 1;
                 end
-                9: rtc_data_out_r[43:40] <= data_in;
-                10: rtc_data_out_r[47:44] <= data_in;
+                9: rtc_data_out_r[43:40] <= data_in_r;
+                10: rtc_data_out_r[47:44] <= data_in_r;
                 11: begin
-                  rtc_data_out_r[51:48] <= (data_in < 10)
-                                           ? data_in
-                                           : data_in - 10;
-                  rtc_data_out_r[55:52] <= data_in < 10 ? 1 : 2;
+                  rtc_data_out_r[51:48] <= (data_in_r < 10)
+                                           ? data_in_r
+                                           : data_in_r - 10;
+                  rtc_data_out_r[55:52] <= data_in_r < 10 ? 1 : 2;
                 end
               endcase
               mode_r <= SRTC_WRITE2;
-              we_countdown_r <= 5;
+              we_countdown_r <= 4;
               rtc_we_r <= 1;
             end
           end
         endcase
     endcase
   end else if(reg_oe_falling && enable) begin
-    case (addr_in)
+    case (addr_in_r[0])
       1'b0: // read data register
       if(mode_r == SRTC_READ) begin
         case(rtc_ptr)
@@ -164,18 +179,25 @@ always @(posedge clkin) begin
                             + (rtc_data_r[55:52] << 1)
                             + (rtc_data_r[55:52] << 3) - 10;
           12: data_out_r <= rtc_data_r[59:56];
+//			 14: mode_r <= SRTC_IDLE;
           15: begin
             rtc_data_r <= rtc_data_in;
             data_out_r <= 8'h0f;
           end
-        default: data_out_r <= 8'h0f;
-      endcase
+          default: data_out_r <= 8'h0f;
+        endcase
         rtc_ptr <= rtc_ptr == 13 ? 15 : rtc_ptr + 1;
       end else begin
         data_out_r <= 8'h00;
       end
 //      1'b1: // control register is write only
     endcase
+  end else if(mode_r == SRTC_WRITE2) begin
+    we_countdown_r <= we_countdown_r - 1;
+    if (we_countdown_r == 3'b000) begin
+      mode_r <= SRTC_WRITE;
+      rtc_we_r <= 0;
+    end
   end
 end
 

verilog/sd2snes/upd77c25.v

@@ -98,6 +98,9 @@ upd77c25_pgmrom pgmrom (
   .doutb(pgm_doutb) // output [23 : 0] doutb
 );
 
+reg [7:0] DIr;
+always @(posedge CLK) if(~nWR) DIr <= DI;
+
 wire [23:0] opcode_w = pgm_doutb;
 reg [1:0] op;
 reg [1:0] op_pselect;
@@ -128,8 +131,8 @@ always @(posedge CLK) reg_nCS_sreg <= {reg_nCS_sreg[3:0], nCS};
 reg [5:0] reg_oe_sreg;
 initial reg_oe_sreg = 6'b111111;
 always @(posedge CLK) reg_oe_sreg <= {reg_oe_sreg[4:0], nRD};
-wire reg_oe_rising = !reg_nCS_sreg[4] && (reg_oe_sreg[5:0] == 6'b000001);
-wire reg_oe_falling = (reg_oe_sreg[5:0] == 6'b100000);
+wire reg_oe_rising = !reg_nCS_sreg[4] && (reg_oe_sreg[5:1] == 5'b00001);
+wire reg_oe_falling = (reg_oe_sreg[5:1] == 5'b10000);
 
 reg [4:0] reg_DP_nCS_sreg;
 initial reg_DP_nCS_sreg = 5'b11111;
@@ -138,7 +141,7 @@ always @(posedge CLK) reg_DP_nCS_sreg <= {reg_DP_nCS_sreg[3:0], DP_nCS};
 reg [5:0] reg_we_sreg;
 initial reg_we_sreg = 6'b111111;
 always @(posedge CLK) reg_we_sreg <= {reg_we_sreg[4:0], nWR};
-wire reg_we_rising = !reg_nCS_sreg[4] && (reg_we_sreg[5:0] == 6'b000001);
+wire reg_we_rising = !reg_nCS_sreg[4] && (reg_we_sreg[5:1] == 5'b00001);
 
 wire [15:0] ram_douta;
 wire [9:0] ram_addra;
@@ -303,12 +306,12 @@ always @(posedge CLK) begin
     if(reg_we_rising && (A0r[3] == 1'b0)) begin
       if(!regs_sr[SR_DRC]) begin
         if(regs_sr[SR_DRS] == 1'b0) begin
-          regs_dr[7:0] <= DI;
+          regs_dr[7:0] <= DIr;
         end else begin
-          regs_dr[15:8] <= DI;
+          regs_dr[15:8] <= DIr;
         end
       end else begin
-        regs_dr[7:0] <= DI;
+        regs_dr[7:0] <= DIr;
       end
     end else if(ld_dst == 4'b0110 && insn_state == STATE_STORE) begin
       if (op == I_OP || op == I_RT) regs_dr <= idb;

verilog/sd2snes_cx4/address.v

@@ -34,7 +34,9 @@ module address(
   output msu_enable,
   output cx4_enable,
   output cx4_vect_enable,
-  output r213f_enable
+  output r213f_enable,
+  output snescmd_rd_enable,
+  output snescmd_wr_enable
 );
 
 wire [23:0] SRAM_SNES_ADDR;
@@ -44,7 +46,7 @@ wire [23:0] SRAM_SNES_ADDR;
    - MMIO @ 6000-7fff
  */
 
-assign IS_ROM = SNES_ADDR[15] & ~SNES_CS;
+assign IS_ROM = ~SNES_CS;
 
 assign SRAM_SNES_ADDR = ({2'b00, SNES_ADDR[22:16], SNES_ADDR[14:0]}
                                & ROM_MASK);
@@ -54,23 +56,20 @@ assign ROM_ADDR = SRAM_SNES_ADDR;
 assign ROM_SEL = 1'b0;
 
 wire msu_enable_w = use_msu1 & (!SNES_ADDR[22] && ((SNES_ADDR[15:0] & 16'hfff8) == 16'h2000));
-reg [5:0] msu_enable_r;
-initial msu_enable_r = 6'b000000;
-always @(posedge CLK) msu_enable_r <= {msu_enable_r[4:0], msu_enable_w};
-assign msu_enable = &msu_enable_r[5:2];
+assign msu_enable = msu_enable_w;
 
 wire cx4_enable_w = (!SNES_ADDR[22] && (SNES_ADDR[15:13] == 3'b011));
-reg [5:0] cx4_enable_r;
-initial cx4_enable_r = 6'b000000;
-always @(posedge CLK) cx4_enable_r <= {cx4_enable_r[4:0], cx4_enable_w};
-assign cx4_enable = &cx4_enable_r[5:2];
+assign cx4_enable = cx4_enable_w;
 
 assign cx4_vect_enable = &SNES_ADDR[15:5];
 
 wire r213f_enable_w = (SNES_PA == 8'h3f);
-reg [5:0] r213f_enable_r;
-initial r213f_enable_r = 6'b000000;
-always @(posedge CLK) r213f_enable_r <= {r213f_enable_r[4:0], r213f_enable_w};
-assign r213f_enable = &r213f_enable_r[5:2];
+assign r213f_enable = r213f_enable_w;
+
+wire snescmd_rd_enable_w = (SNES_PA[7:4] == 4'b1111);
+assign snescmd_rd_enable = snescmd_rd_enable_w;
+
+wire snescmd_wr_enable_w = (SNES_ADDR[23:4] == 20'hccccc);
+assign snescmd_wr_enable = snescmd_wr_enable_w;
 
 endmodule

verilog/sd2snes_cx4/cx4.v

@@ -334,6 +334,7 @@ always @(posedge CLK) begin
         CACHE_ST <= ST_CACHE_START;
         cache_pgmpage <= cx4_mmio_pgmpage;
         cache_cachepage <= cx4_mmio_cachepage;
+		  cx4_busy[BUSY_CACHE] <= 1'b1;
       end else if(cpu_cache_en
          & (~cachevalid[~cpu_page]
             | |(cachetag[~cpu_page] ^ cpu_p))) begin
@@ -431,7 +432,7 @@ end
 /***************************
  =========== CPU ===========
  ***************************/
-reg [4:0] CPU_STATE;
+reg [5:0] CPU_STATE;
 reg [2:0] cpu_sp;
 initial cpu_sp = 3'b000;
 wire [15:0] cpu_op_w;
@@ -451,16 +452,19 @@ reg [23:0] cpu_dummy;
 reg [23:0] cpu_tmp;
 
 reg [23:0] cpu_sa;  // tmp register for shifted accumulator
+reg [7:0] cpu_wait;
+initial cpu_wait = 8'h00;
 
 wire [9:0] cx4_datrom_addr = cpu_a[9:0];
 wire [23:0] cx4_datrom_do;
 wire [7:0] cx4_datram_do;
 
-parameter ST_CPU_IDLE = 5'b00001;
-parameter ST_CPU_0    = 5'b00010;
-parameter ST_CPU_1    = 5'b00100;
-parameter ST_CPU_2    = 5'b01000;
-parameter ST_CPU_3    = 5'b10000;
+parameter ST_CPU_IDLE = 6'b000001;
+parameter ST_CPU_0    = 6'b000010;
+parameter ST_CPU_1    = 6'b000100;
+parameter ST_CPU_2    = 6'b001000;
+parameter ST_CPU_3    = 6'b010000;
+parameter ST_CPU_4    = 6'b100000;
 
 initial CPU_STATE = ST_CPU_IDLE;
 
@@ -636,7 +640,7 @@ always @(posedge CLK) begin
           cpu_sp <= cpu_sp - 1;
         end
         OP_WAI: if(BUS_RDY) cpu_pc <= cpu_pc + 1;
-        OP_BUS: begin 
+        OP_BUS: begin
           cpu_bus_rq <= 1'b0;
           cpu_pc <= cpu_pc + 1;
         end
@@ -710,7 +714,6 @@ always @(posedge CLK) begin
       endcase
     end
     ST_CPU_3: begin
-      CPU_STATE <= ST_CPU_0;
       case(op)
         OP_BUS: cpu_busaddr <= cpu_busaddr + 1;
         OP_WRRAM: cx4_cpu_datram_we <= 1'b0;
@@ -747,6 +750,29 @@ always @(posedge CLK) begin
         end
       endcase
       cpu_op <= cpu_op_w;
+		casex(cpu_op_w[15:11])
+        5'b00x01, 5'b00x10, 5'b00100, 5'b00111: begin
+		    cpu_wait <= 8'h07;
+	       CPU_STATE <= ST_CPU_4;
+		  end
+        5'b01110, 5'b01101, 5'b11101: begin
+		    cpu_wait <= 8'h03;
+	       CPU_STATE <= ST_CPU_4;
+		  end
+        /*5'b10011: begin
+		    cpu_wait <= 8'h02;
+	       CPU_STATE <= ST_CPU_4;
+		  end
+        5'b01000: begin
+		    cpu_wait <= 8'h0e;
+	       CPU_STATE <= ST_CPU_4;
+		  end*/
+		  default: begin
+		    cpu_wait <= 8'h00;
+	       CPU_STATE <= ST_CPU_0;
+		  end
+		endcase
+		
       casex(cpu_op_w[15:11])
         5'b00000: op <= OP_NOP;
 
@@ -790,6 +816,11 @@ always @(posedge CLK) begin
       op_param <= cpu_op_w[7:0];
       op_sa <= cpu_op_w[9:8];
     end
+    ST_CPU_4: begin
+	   cpu_wait <= cpu_wait - 1;
+	   if(cpu_wait) CPU_STATE <= ST_CPU_4;
+		else CPU_STATE <= ST_CPU_0;
+	 end
   endcase
 end
 

verilog/sd2snes_cx4/dac.v

@@ -31,6 +31,7 @@ module dac(
   output sdout,
   output lrck,
   output mclk,
+  output sclk,
   output DAC_STATUS
 );
 
@@ -68,14 +69,15 @@ reg [15:0] smpshift;
 
 assign mclk = cnt[2]; // mclk = clk/8
 assign lrck = cnt[8]; // lrck = mclk/128
-wire sclk = cnt[3];   // sclk = lrck*32
+assign sclk = cnt[3]; // sclk = lrck*32
 
 reg [2:0] lrck_sreg;
 reg [2:0] sclk_sreg;
-wire lrck_rising = ({lrck_sreg[2:1]} == 2'b01);
-wire lrck_falling = ({lrck_sreg[2:1]} == 2'b10);
+wire lrck_rising = (lrck_sreg[1:0] == 2'b01);
+wire lrck_falling = (lrck_sreg[1:0] == 2'b10);
 
-wire sclk_rising = ({sclk_sreg[2:1]} == 2'b01);
+wire sclk_rising = (sclk_sreg[1:0] == 2'b01);
+wire sclk_falling = (sclk_sreg[1:0] == 2'b10);
 
 wire vol_latch_rising = (vol_latch_reg[1:0] == 2'b01);
 reg sdout_reg;
@@ -143,15 +145,15 @@ always @(posedge clkin) begin
 end
 
 always @(posedge clkin) begin
-  if (lrck_rising) begin // right channel
-    smpshift <= (({16'h0, dac_data[31:16]^16'h8000} * vol_reg) >> 8) ^ 16'h8000;
-    samples <= samples + 1;
-  end else if (lrck_falling) begin // left channel
-    smpshift <= (({16'h0, dac_data[15:0]^16'h8000} * vol_reg) >> 8) ^ 16'h8000;
-  end else begin
-    if (sclk_rising) begin
-      smpcnt <= smpcnt + 1;
-      sdout_reg <= smpshift[15];
+  if (sclk_falling) begin
+    smpcnt <= smpcnt + 1;
+    sdout_reg <= smpshift[15];
+    if (lrck_rising) begin // right channel
+      smpshift <= (({16'h0, dac_data[31:16]^16'h8000} * vol_reg) >> 8) ^ 16'h8000;
+      samples <= samples + 1;
+    end else if (lrck_falling) begin // left channel
+      smpshift <= (({16'h0, dac_data[15:0]^16'h8000} * vol_reg) >> 8) ^ 16'h8000;
+    end else begin
       smpshift <= {smpshift[14:0], 1'b0};
     end
   end

verilog/sd2snes_cx4/main.ucf

@@ -1,5 +1,5 @@
 NET "CLKIN" TNM_NET = "CLKIN";
-TIMESPEC TS_CLKIN = PERIOD "CLKIN" 24 MHz HIGH 50 %;
+TIMESPEC TS_CLKIN = PERIOD "CLKIN" 22.1 MHz HIGH 50 %;
 //TIMESPEC TS_CLKIN = PERIOD "CLKIN" 21.5 MHz HIGH 50 %;
 NET "p113_out" IOSTANDARD = LVCMOS33;
 NET "p113_out" LOC = P113;
@@ -10,7 +10,7 @@ TIMESPEC TS_SNES_SYSCLK = PERIOD "SNES_SYSCLK" 21.5 MHz HIGH 50 %;
 NET "SPI_SCK" LOC = P71;
 NET "SPI_SCK" CLOCK_DEDICATED_ROUTE = FALSE;
 NET "SPI_SCK" TNM_NET = "SPI_SCK";
-TIMESPEC TS_SPI_SCK = PERIOD "SPI_SCK" 48MHz HIGH 50 %;
+TIMESPEC TS_SPI_SCK = PERIOD "SPI_SCK" 44.2 MHz HIGH 50 %;
 
 NET "SPI_SCK" IOSTANDARD = LVCMOS33;
 NET "SPI_SCK" DRIVE = 8;
@@ -35,30 +35,30 @@ NET "ROM_CE" LOC = P172;
 NET "ROM_CE" IOSTANDARD = LVCMOS33;
 NET "ROM_CE" DRIVE = 8;
 
-NET "SNES_ADDR[0]" LOC = P119;
-NET "SNES_ADDR[10]" LOC = P146;
-NET "SNES_ADDR[11]" LOC = P148;
-NET "SNES_ADDR[12]" LOC = P147;
-NET "SNES_ADDR[13]" LOC = P144;
-NET "SNES_ADDR[14]" LOC = P141;
-NET "SNES_ADDR[15]" LOC = P139;
-NET "SNES_ADDR[16]" LOC = P137;
-NET "SNES_ADDR[17]" LOC = P133;
-NET "SNES_ADDR[18]" LOC = P131;
-NET "SNES_ADDR[19]" LOC = P128;
-NET "SNES_ADDR[1]" LOC = P122;
-NET "SNES_ADDR[20]" LOC = P125;
-NET "SNES_ADDR[21]" LOC = P123;
-NET "SNES_ADDR[22]" LOC = P120;
-NET "SNES_ADDR[23]" LOC = P117;
-NET "SNES_ADDR[2]" LOC = P124;
-NET "SNES_ADDR[3]" LOC = P126;
-NET "SNES_ADDR[4]" LOC = P130;
-NET "SNES_ADDR[5]" LOC = P132;
-NET "SNES_ADDR[6]" LOC = P135;
-NET "SNES_ADDR[7]" LOC = P138;
-NET "SNES_ADDR[8]" LOC = P140;
-NET "SNES_ADDR[9]" LOC = P143;
+NET "SNES_ADDR_IN[0]" LOC = P119;
+NET "SNES_ADDR_IN[10]" LOC = P146;
+NET "SNES_ADDR_IN[11]" LOC = P148;
+NET "SNES_ADDR_IN[12]" LOC = P147;
+NET "SNES_ADDR_IN[13]" LOC = P144;
+NET "SNES_ADDR_IN[14]" LOC = P141;
+NET "SNES_ADDR_IN[15]" LOC = P139;
+NET "SNES_ADDR_IN[16]" LOC = P137;
+NET "SNES_ADDR_IN[17]" LOC = P133;
+NET "SNES_ADDR_IN[18]" LOC = P131;
+NET "SNES_ADDR_IN[19]" LOC = P128;
+NET "SNES_ADDR_IN[1]" LOC = P122;
+NET "SNES_ADDR_IN[20]" LOC = P125;
+NET "SNES_ADDR_IN[21]" LOC = P123;
+NET "SNES_ADDR_IN[22]" LOC = P120;
+NET "SNES_ADDR_IN[23]" LOC = P117;
+NET "SNES_ADDR_IN[2]" LOC = P124;
+NET "SNES_ADDR_IN[3]" LOC = P126;
+NET "SNES_ADDR_IN[4]" LOC = P130;
+NET "SNES_ADDR_IN[5]" LOC = P132;
+NET "SNES_ADDR_IN[6]" LOC = P135;
+NET "SNES_ADDR_IN[7]" LOC = P138;
+NET "SNES_ADDR_IN[8]" LOC = P140;
+NET "SNES_ADDR_IN[9]" LOC = P143;
 NET "SNES_DATA[0]" LOC = P107;
 NET "SNES_DATA[1]" LOC = P102;
 NET "SNES_DATA[2]" LOC = P100;
@@ -381,54 +381,54 @@ NET "ROM_WE" LOC = P190;
 
 NET "ROM_WE" IOSTANDARD = LVCMOS33;
 NET "ROM_WE" DRIVE = 8;
-NET "SNES_ADDR[0]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[0]" DRIVE = 8;
-NET "SNES_ADDR[10]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[10]" DRIVE = 8;
-NET "SNES_ADDR[11]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[11]" DRIVE = 8;
-NET "SNES_ADDR[12]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[12]" DRIVE = 8;
-NET "SNES_ADDR[13]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[13]" DRIVE = 8;
-NET "SNES_ADDR[14]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[14]" DRIVE = 8;
-NET "SNES_ADDR[15]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[15]" DRIVE = 8;
-NET "SNES_ADDR[16]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[16]" DRIVE = 8;
-NET "SNES_ADDR[17]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[17]" DRIVE = 8;
-NET "SNES_ADDR[18]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[18]" DRIVE = 8;
-NET "SNES_ADDR[19]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[19]" DRIVE = 8;
-NET "SNES_ADDR[1]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[1]" DRIVE = 8;
-NET "SNES_ADDR[20]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[20]" DRIVE = 8;
-NET "SNES_ADDR[21]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[21]" DRIVE = 8;
-NET "SNES_ADDR[22]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[22]" DRIVE = 8;
-NET "SNES_ADDR[23]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[23]" DRIVE = 8;
-NET "SNES_ADDR[2]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[2]" DRIVE = 8;
-NET "SNES_ADDR[3]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[3]" DRIVE = 8;
-NET "SNES_ADDR[4]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[4]" DRIVE = 8;
-NET "SNES_ADDR[5]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[5]" DRIVE = 8;
-NET "SNES_ADDR[6]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[6]" DRIVE = 8;
-NET "SNES_ADDR[7]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[7]" DRIVE = 8;
-NET "SNES_ADDR[8]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[8]" DRIVE = 8;
-NET "SNES_ADDR[9]" IOSTANDARD = LVCMOS33;
-NET "SNES_ADDR[9]" DRIVE = 8;
+NET "SNES_ADDR_IN[0]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[0]" DRIVE = 8;
+NET "SNES_ADDR_IN[10]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[10]" DRIVE = 8;
+NET "SNES_ADDR_IN[11]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[11]" DRIVE = 8;
+NET "SNES_ADDR_IN[12]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[12]" DRIVE = 8;
+NET "SNES_ADDR_IN[13]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[13]" DRIVE = 8;
+NET "SNES_ADDR_IN[14]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[14]" DRIVE = 8;
+NET "SNES_ADDR_IN[15]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[15]" DRIVE = 8;
+NET "SNES_ADDR_IN[16]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[16]" DRIVE = 8;
+NET "SNES_ADDR_IN[17]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[17]" DRIVE = 8;
+NET "SNES_ADDR_IN[18]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[18]" DRIVE = 8;
+NET "SNES_ADDR_IN[19]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[19]" DRIVE = 8;
+NET "SNES_ADDR_IN[1]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[1]" DRIVE = 8;
+NET "SNES_ADDR_IN[20]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[20]" DRIVE = 8;
+NET "SNES_ADDR_IN[21]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[21]" DRIVE = 8;
+NET "SNES_ADDR_IN[22]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[22]" DRIVE = 8;
+NET "SNES_ADDR_IN[23]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[23]" DRIVE = 8;
+NET "SNES_ADDR_IN[2]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[2]" DRIVE = 8;
+NET "SNES_ADDR_IN[3]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[3]" DRIVE = 8;
+NET "SNES_ADDR_IN[4]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[4]" DRIVE = 8;
+NET "SNES_ADDR_IN[5]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[5]" DRIVE = 8;
+NET "SNES_ADDR_IN[6]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[6]" DRIVE = 8;
+NET "SNES_ADDR_IN[7]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[7]" DRIVE = 8;
+NET "SNES_ADDR_IN[8]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[8]" DRIVE = 8;
+NET "SNES_ADDR_IN[9]" IOSTANDARD = LVCMOS33;
+NET "SNES_ADDR_IN[9]" DRIVE = 8;
 
 
 NET "SNES_CPU_CLK" LOC = P95;
@@ -535,6 +535,7 @@ NET "SD_DAT[3]" LOC = P63;
 
 # PlanAhead Generated IO constraints 
 NET "SD_CLK" IOSTANDARD = LVCMOS33;
+NET "SD_CLK" PULLUP;
 NET "SD_CMD" IOSTANDARD = LVCMOS33;
 NET "SD_DAT[0]" IOSTANDARD = LVCMOS33;
 NET "SD_DAT[1]" IOSTANDARD = LVCMOS33;
@@ -593,7 +594,7 @@ TIMESPEC TS_CX4_MUL = FROM "CX4_MUL_downstream" TO "cx4_cpu_idb" TS_CLK21 / 2;
 TIMEGRP "CX4_FL_Z" = FFS("*cx4*fl_z*");
 TIMEGRP "CX4_FL_C" = FFS("*cx4*fl_c*");
 TIMEGRP "CX4_FL_N" = FFS("*cx4*fl_n*");
-TIMEGRP "CX4_MULT" = MULTS("snes_cx4/cx4_mul/sig000000e5") MULTS("snes_cx4/cx4_mul/sig000000e4") MULTS("snes_cx4/cx4_mul/sig000000e3") MULTS("snes_cx4/cx4_mul/sig000000e2") MULTS("snes_cx4/cx4_mul/sig000000ee") MULTS("snes_cx4/cx4_mul/sig000000ed") MULTS("snes_cx4/cx4_mul/sig000000ec") MULTS("snes_cx4/cx4_mul/sig000000eb") MULTS("snes_cx4/cx4_mul/sig000000ea") MULTS("snes_cx4/cx4_mul/sig000000e9") MULTS("snes_cx4/cx4_mul/sig000000e8") MULTS("snes_cx4/cx4_mul/sig000000e7") MULTS("snes_cx4/cx4_mul/sig000000e6") MULTS("snes_cx4/cx4_mul/sig000000e1") MULTS("snes_cx4/cx4_mul/sig000000d8") MULTS("snes_cx4/cx4_mul/sig000000d7") MULTS("snes_cx4/cx4_mul/sig000000d6") MULTS("snes_cx4/cx4_mul/sig000000d5") MULTS("snes_cx4/cx4_mul/sig000000d3") MULTS("snes_cx4/cx4_mul/sig000000d2") MULTS("snes_cx4/cx4_mul/sig000000d1") MULTS("snes_cx4/cx4_mul/sig000000d0") MULTS("snes_cx4/cx4_mul/sig000000cf") MULTS("snes_cx4/cx4_mul/sig000000ce") MULTS("snes_cx4/cx4_mul/sig000000cd") MULTS("snes_cx4/cx4_mul/sig000000cc") MULTS("snes_cx4/cx4_mul/sig000000cb") MULTS("snes_cx4/cx4_mul/sig000000ca") MULTS("snes_cx4/cx4_mul/sig000000e0") MULTS("snes_cx4/cx4_mul/sig000000df") MULTS("snes_cx4/cx4_mul/sig000000de") MULTS("snes_cx4/cx4_mul/sig000000dd") MULTS("snes_cx4/cx4_mul/sig000000dc") MULTS("snes_cx4/cx4_mul/sig000000db") MULTS("snes_cx4/cx4_mul/sig000000da") MULTS("snes_cx4/cx4_mul/sig000000d9") MULTS("snes_cx4/cx4_mul/sig000000d4") MULTS("snes_cx4/cx4_mul/sig000000c9") MULTS("snes_cx4/cx4_mul/sig000000c0") MULTS("snes_cx4/cx4_mul/sig000000bf") MULTS("snes_cx4/cx4_mul/sig000000be") MULTS("snes_cx4/cx4_mul/sig000000bd") MULTS("snes_cx4/cx4_mul/sig000000bb") MULTS("snes_cx4/cx4_mul/sig000000ba") MULTS("snes_cx4/cx4_mul/sig000000b9") MULTS("snes_cx4/cx4_mul/sig000000b8") MULTS("snes_cx4/cx4_mul/sig000000b7") MULTS("snes_cx4/cx4_mul/sig000000b6") MULTS("snes_cx4/cx4_mul/sig000000b5") MULTS("snes_cx4/cx4_mul/sig000000b4") MULTS("snes_cx4/cx4_mul/sig000000b3") MULTS("snes_cx4/cx4_mul/sig000000b2") MULTS("snes_cx4/cx4_mul/sig000000c8") MULTS("snes_cx4/cx4_mul/sig000000c7") MULTS("snes_cx4/cx4_mul/sig000000c6") MULTS("snes_cx4/cx4_mul/sig000000c5") MULTS("snes_cx4/cx4_mul/sig000000c4") MULTS("snes_cx4/cx4_mul/sig000000c3") MULTS("snes_cx4/cx4_mul/sig000000c2") MULTS("snes_cx4/cx4_mul/sig000000c1") MULTS("snes_cx4/cx4_mul/sig000000bc") MULTS("snes_cx4/cx4_mul/sig000000b1") MULTS("snes_cx4/cx4_mul/sig000000a9") MULTS("snes_cx4/cx4_mul/sig000000a8") MULTS("snes_cx4/cx4_mul/sig000000a7") MULTS("snes_cx4/cx4_mul/sig000000a6") MULTS("snes_cx4/cx4_mul/sig000000a5") MULTS("snes_cx4/cx4_mul/sig000000a3") MULTS("snes_cx4/cx4_mul/sig000000a2") MULTS("snes_cx4/cx4_mul/sig000000a1") MULTS("snes_cx4/cx4_mul/sig000000a0") MULTS("snes_cx4/cx4_mul/sig0000009f") MULTS("snes_cx4/cx4_mul/sig0000009e") MULTS("snes_cx4/cx4_mul/sig0000009d") MULTS("snes_cx4/cx4_mul/sig0000009c") MULTS("snes_cx4/cx4_mul/sig0000009b") MULTS("snes_cx4/cx4_mul/sig0000009a") MULTS("snes_cx4/cx4_mul/sig00000098") MULTS("snes_cx4/cx4_mul/sig00000097") MULTS("snes_cx4/cx4_mul/sig00000096") MULTS("snes_cx4/cx4_mul/sig00000095") MULTS("snes_cx4/cx4_mul/sig00000094") MULTS("snes_cx4/cx4_mul/sig00000093") MULTS("snes_cx4/cx4_mul/sig00000092") MULTS("snes_cx4/cx4_mul/sig00000091") MULTS("snes_cx4/cx4_mul/sig00000090") MULTS("snes_cx4/cx4_mul/sig0000008f") MULTS("snes_cx4/cx4_mul/sig000000b0") MULTS("snes_cx4/cx4_mul/sig000000af") MULTS("snes_cx4/cx4_mul/sig000000ae") MULTS("snes_cx4/cx4_mul/sig000000ad") MULTS("snes_cx4/cx4_mul/sig000000ac") MULTS("snes_cx4/cx4_mul/sig000000ab") MULTS("snes_cx4/cx4_mul/sig000000aa") MULTS("snes_cx4/cx4_mul/sig000000a4") MULTS("snes_cx4/cx4_mul/sig00000099") MULTS("snes_cx4/cx4_mul/sig0000008e");
+#TIMEGRP "CX4_MULT" = MULTS("snes_cx4/cx4_mul/sig000000e5") MULTS("snes_cx4/cx4_mul/sig000000e4") MULTS("snes_cx4/cx4_mul/sig000000e3") MULTS("snes_cx4/cx4_mul/sig000000e2") MULTS("snes_cx4/cx4_mul/sig000000ee") MULTS("snes_cx4/cx4_mul/sig000000ed") MULTS("snes_cx4/cx4_mul/sig000000ec") MULTS("snes_cx4/cx4_mul/sig000000eb") MULTS("snes_cx4/cx4_mul/sig000000ea") MULTS("snes_cx4/cx4_mul/sig000000e9") MULTS("snes_cx4/cx4_mul/sig000000e8") MULTS("snes_cx4/cx4_mul/sig000000e7") MULTS("snes_cx4/cx4_mul/sig000000e6") MULTS("snes_cx4/cx4_mul/sig000000e1") MULTS("snes_cx4/cx4_mul/sig000000d8") MULTS("snes_cx4/cx4_mul/sig000000d7") MULTS("snes_cx4/cx4_mul/sig000000d6") MULTS("snes_cx4/cx4_mul/sig000000d5") MULTS("snes_cx4/cx4_mul/sig000000d3") MULTS("snes_cx4/cx4_mul/sig000000d2") MULTS("snes_cx4/cx4_mul/sig000000d1") MULTS("snes_cx4/cx4_mul/sig000000d0") MULTS("snes_cx4/cx4_mul/sig000000cf") MULTS("snes_cx4/cx4_mul/sig000000ce") MULTS("snes_cx4/cx4_mul/sig000000cd") MULTS("snes_cx4/cx4_mul/sig000000cc") MULTS("snes_cx4/cx4_mul/sig000000cb") MULTS("snes_cx4/cx4_mul/sig000000ca") MULTS("snes_cx4/cx4_mul/sig000000e0") MULTS("snes_cx4/cx4_mul/sig000000df") MULTS("snes_cx4/cx4_mul/sig000000de") MULTS("snes_cx4/cx4_mul/sig000000dd") MULTS("snes_cx4/cx4_mul/sig000000dc") MULTS("snes_cx4/cx4_mul/sig000000db") MULTS("snes_cx4/cx4_mul/sig000000da") MULTS("snes_cx4/cx4_mul/sig000000d9") MULTS("snes_cx4/cx4_mul/sig000000d4") MULTS("snes_cx4/cx4_mul/sig000000c9") MULTS("snes_cx4/cx4_mul/sig000000c0") MULTS("snes_cx4/cx4_mul/sig000000bf") MULTS("snes_cx4/cx4_mul/sig000000be") MULTS("snes_cx4/cx4_mul/sig000000bd") MULTS("snes_cx4/cx4_mul/sig000000bb") MULTS("snes_cx4/cx4_mul/sig000000ba") MULTS("snes_cx4/cx4_mul/sig000000b9") MULTS("snes_cx4/cx4_mul/sig000000b8") MULTS("snes_cx4/cx4_mul/sig000000b7") MULTS("snes_cx4/cx4_mul/sig000000b6") MULTS("snes_cx4/cx4_mul/sig000000b5") MULTS("snes_cx4/cx4_mul/sig000000b4") MULTS("snes_cx4/cx4_mul/sig000000b3") MULTS("snes_cx4/cx4_mul/sig000000b2") MULTS("snes_cx4/cx4_mul/sig000000c8") MULTS("snes_cx4/cx4_mul/sig000000c7") MULTS("snes_cx4/cx4_mul/sig000000c6") MULTS("snes_cx4/cx4_mul/sig000000c5") MULTS("snes_cx4/cx4_mul/sig000000c4") MULTS("snes_cx4/cx4_mul/sig000000c3") MULTS("snes_cx4/cx4_mul/sig000000c2") MULTS("snes_cx4/cx4_mul/sig000000c1") MULTS("snes_cx4/cx4_mul/sig000000bc") MULTS("snes_cx4/cx4_mul/sig000000b1") MULTS("snes_cx4/cx4_mul/sig000000a9") MULTS("snes_cx4/cx4_mul/sig000000a8") MULTS("snes_cx4/cx4_mul/sig000000a7") MULTS("snes_cx4/cx4_mul/sig000000a6") MULTS("snes_cx4/cx4_mul/sig000000a5") MULTS("snes_cx4/cx4_mul/sig000000a3") MULTS("snes_cx4/cx4_mul/sig000000a2") MULTS("snes_cx4/cx4_mul/sig000000a1") MULTS("snes_cx4/cx4_mul/sig000000a0") MULTS("snes_cx4/cx4_mul/sig0000009f") MULTS("snes_cx4/cx4_mul/sig0000009e") MULTS("snes_cx4/cx4_mul/sig0000009d") MULTS("snes_cx4/cx4_mul/sig0000009c") MULTS("snes_cx4/cx4_mul/sig0000009b") MULTS("snes_cx4/cx4_mul/sig0000009a") MULTS("snes_cx4/cx4_mul/sig00000098") MULTS("snes_cx4/cx4_mul/sig00000097") MULTS("snes_cx4/cx4_mul/sig00000096") MULTS("snes_cx4/cx4_mul/sig00000095") MULTS("snes_cx4/cx4_mul/sig00000094") MULTS("snes_cx4/cx4_mul/sig00000093") MULTS("snes_cx4/cx4_mul/sig00000092") MULTS("snes_cx4/cx4_mul/sig00000091") MULTS("snes_cx4/cx4_mul/sig00000090") MULTS("snes_cx4/cx4_mul/sig0000008f") MULTS("snes_cx4/cx4_mul/sig000000b0") MULTS("snes_cx4/cx4_mul/sig000000af") MULTS("snes_cx4/cx4_mul/sig000000ae") MULTS("snes_cx4/cx4_mul/sig000000ad") MULTS("snes_cx4/cx4_mul/sig000000ac") MULTS("snes_cx4/cx4_mul/sig000000ab") MULTS("snes_cx4/cx4_mul/sig000000aa") MULTS("snes_cx4/cx4_mul/sig000000a4") MULTS("snes_cx4/cx4_mul/sig00000099") MULTS("snes_cx4/cx4_mul/sig0000008e");
 TIMEGRP "CX4_MUL_FF" = FFS("snes_cx4/cx4_mul/sig00000129") FFS("snes_cx4/cx4_mul/sig00000128") FFS("snes_cx4/cx4_mul/sig00000127") FFS("snes_cx4/cx4_mul/sig00000126") FFS("snes_cx4/cx4_mul/sig00000124") FFS("snes_cx4/cx4_mul/sig00000123") FFS("snes_cx4/cx4_mul/sig00000122") FFS("snes_cx4/cx4_mul/sig00000121") FFS("snes_cx4/cx4_mul/sig00000120") FFS("snes_cx4/cx4_mul/sig0000011f") FFS("snes_cx4/cx4_mul/sig0000011e") FFS("snes_cx4/cx4_mul/sig0000011d") FFS("snes_cx4/cx4_mul/sig0000011c") FFS("snes_cx4/cx4_mul/sig0000011b") FFS("snes_cx4/cx4_mul/sig00000130") FFS("snes_cx4/cx4_mul/sig0000012f") FFS("snes_cx4/cx4_mul/sig0000012e") FFS("snes_cx4/cx4_mul/sig0000012d") FFS("snes_cx4/cx4_mul/sig0000012c") FFS("snes_cx4/cx4_mul/sig0000012b") FFS("snes_cx4/cx4_mul/sig0000012a") FFS("snes_cx4/cx4_mul/sig00000125") FFS("snes_cx4/cx4_mul/sig0000011a") FFS("snes_cx4/cx4_mul/sig00000119") FFS("snes_cx4/cx4_mul/sig00000111") FFS("snes_cx4/cx4_mul/sig00000110") FFS("snes_cx4/cx4_mul/sig0000010f") FFS("snes_cx4/cx4_mul/sig0000010e") FFS("snes_cx4/cx4_mul/sig0000010c") FFS("snes_cx4/cx4_mul/sig0000010b") FFS("snes_cx4/cx4_mul/sig0000010a") FFS("snes_cx4/cx4_mul/sig00000109") FFS("snes_cx4/cx4_mul/sig00000108") FFS("snes_cx4/cx4_mul/sig00000107") FFS("snes_cx4/cx4_mul/sig00000106") FFS("snes_cx4/cx4_mul/sig00000105") FFS("snes_cx4/cx4_mul/sig00000104") FFS("snes_cx4/cx4_mul/sig00000103") FFS("snes_cx4/cx4_mul/sig00000118") FFS("snes_cx4/cx4_mul/sig00000117") FFS("snes_cx4/cx4_mul/sig00000116") FFS("snes_cx4/cx4_mul/sig00000133") FFS("snes_cx4/cx4_mul/sig0000013e") FFS("snes_cx4/cx4_mul/sig0000013d") FFS("snes_cx4/cx4_mul/sig0000013c") FFS("snes_cx4/cx4_mul/sig0000013b") FFS("snes_cx4/cx4_mul/sig0000013a") FFS("snes_cx4/cx4_mul/sig000000fb") FFS("snes_cx4/cx4_mul/sig000000fa") FFS("snes_cx4/cx4_mul/sig000000f9") FFS("snes_cx4/cx4_mul/sig000000f8") FFS("snes_cx4/cx4_mul/sig000000f7") FFS("snes_cx4/cx4_mul/sig000000f6") FFS("snes_cx4/cpu_mul_result<13>") FFS("snes_cx4/cpu_mul_result<12>") FFS("snes_cx4/cpu_mul_result<11>") FFS("snes_cx4/cpu_mul_result<10>") FFS("snes_cx4/cpu_mul_result<9>") FFS("snes_cx4/cpu_mul_result<8>") FFS("snes_cx4/cx4_mul/sig00000115") FFS("snes_cx4/cx4_mul/sig00000114") FFS("snes_cx4/cx4_mul/sig00000113") FFS("snes_cx4/cx4_mul/sig00000112") FFS("snes_cx4/cx4_mul/sig0000010d") FFS("snes_cx4/cx4_mul/sig00000102") FFS("snes_cx4/cx4_mul/sig00000101") FFS("snes_cx4/cx4_mul/sig00000136") FFS("snes_cx4/cx4_mul/sig00000135") FFS("snes_cx4/cx4_mul/sig00000134") FFS("snes_cx4/cx4_mul/sig00000139") FFS("snes_cx4/cx4_mul/sig00000138") FFS("snes_cx4/cx4_mul/sig00000137") FFS("snes_cx4/cx4_mul/sig00000132") FFS("snes_cx4/cx4_mul/sig00000131") FFS("snes_cx4/cx4_mul/sig00000100") FFS("snes_cx4/cx4_mul/sig000000ff") FFS("snes_cx4/cx4_mul/sig000000fe") FFS("snes_cx4/cx4_mul/sig000000fd") FFS("snes_cx4/cx4_mul/sig000000fc") FFS("snes_cx4/cx4_mul/sig000000f5") FFS("snes_cx4/cx4_mul/sig000000f4") FFS("snes_cx4/cx4_mul/sig000000f3") FFS("snes_cx4/cx4_mul/sig000000f2") FFS("snes_cx4/cx4_mul/sig000000f1") FFS("snes_cx4/cx4_mul/sig000000f0") FFS("snes_cx4/cx4_mul/sig000000ef") FFS("snes_cx4/cpu_mul_result<16>") FFS("snes_cx4/cpu_mul_result<15>") FFS("snes_cx4/cpu_mul_result<14>") FFS("snes_cx4/cpu_mul_result<7>") FFS("snes_cx4/cpu_mul_result<6>") FFS("snes_cx4/cpu_mul_result<5>") FFS("snes_cx4/cpu_mul_result<4>") FFS("snes_cx4/cpu_mul_result<3>") FFS("snes_cx4/cpu_mul_result<2>") FFS("snes_cx4/cpu_mul_result<1>") FFS("snes_cx4/cpu_mul_result<0>") FFS("snes_cx4/Mmult__COND_15_Madd_cy<2>11_FRB") FFS("snes_cx4/Mmult__COND_15_Madd_cy<2>11_FRB_1") FFS("snes_cx4/Mmult__COND_15_Madd_cy<3>11_FRB") FFS("snes_cx4/Mmult__COND_15_Madd_cy<3>11_FRB_1") FFS("snes_cx4/Mmult__COND_15_Madd_lut<1>1_FRB") FFS("snes_cx4/Mmult__COND_15_Madd_lut<1>1_FRB_1") FFS("snes_cx4/Mmult__COND_15_Madd_lut<1>1_FRB_2") FFS("snes_cx4/Mmult__COND_15_Madd_lut<2>1_FRB") FFS("snes_cx4/Mmult__COND_15_Madd_lut<3>1_FRB") FFS("snes_cx4/Mmult__COND_15_Madd_lut<3>1_FRB_1");
 #Created by Constraints Editor (xc3s400-pq208-4) - 2011/10/30
 TIMESPEC TS_CX4_MUL2 = FROM "MULTS" TO "cx4_cpu_idb" TS_CLK21 / 2;

verilog/sd2snes_cx4/main.v

@@ -23,7 +23,7 @@ module main(
   input CLKIN,
 
   /* SNES signals */
-  input [23:0] SNES_ADDR,
+  input [23:0] SNES_ADDR_IN,
   input SNES_READ,
   input SNES_WRITE,
   input SNES_CS,
@@ -38,7 +38,7 @@ module main(
   input [7:0] SNES_PA,
   input SNES_PARD,
   input SNES_PAWR,
-
+  
   /* SRAM signals */
   /* Bus 1: PSRAM, 128Mbit, 16bit, 70ns */
   inout [15:0] ROM_DATA,
@@ -77,6 +77,19 @@ module main(
   output p113_out
 );
 
+wire CLK2;
+
+reg [23:0] SNES_ADDR_r [2:0];
+always @(posedge CLK2) begin
+  SNES_ADDR_r[2] <= SNES_ADDR_r[1];
+  SNES_ADDR_r[1] <= SNES_ADDR_r[0];
+  SNES_ADDR_r[0] <= SNES_ADDR_IN;
+end
+wire [23:0] SNES_ADDR = SNES_ADDR_r[2] & SNES_ADDR_r[1];
+
+wire [7:0] CX4_SNES_DATA_IN;
+wire [7:0] CX4_SNES_DATA_OUT;
+
 wire [7:0] spi_cmd_data;
 wire [7:0] spi_param_data;
 wire [7:0] spi_input_data;
@@ -92,7 +105,6 @@ wire [10:0] SD_DMA_PARTIAL_START;
 wire [10:0] SD_DMA_PARTIAL_END;
 
 wire [10:0] dac_addr;
-//wire [7:0] dac_volume;
 wire [7:0] msu_volumerq_out;
 wire [6:0] msu_status_out;
 wire [31:0] msu_addressrq_out;
@@ -104,9 +116,6 @@ wire [7:0] MSU_SNES_DATA_OUT;
 wire [5:0] msu_status_reset_bits;
 wire [5:0] msu_status_set_bits;
 
-wire [7:0] CX4_SNES_DATA_IN;
-wire [7:0] CX4_SNES_DATA_OUT;
-
 wire [23:0] MAPPED_SNES_ADDR;
 wire ROM_ADDR0;
 
@@ -239,9 +248,9 @@ mcu_cmd snes_mcu_cmd(
   .mcu_wrq(MCU_WRQ),
   .mcu_rq_rdy(MCU_RDY),
   .use_msu1(use_msu1),
-  .cx4_datrom_addr_out(cx4_datrom_addr), 
-  .cx4_datrom_data_out(cx4_datrom_data), 
-  .cx4_datrom_we_out(cx4_datrom_we), 
+  .cx4_datrom_addr_out(cx4_datrom_addr),
+  .cx4_datrom_data_out(cx4_datrom_data),
+  .cx4_datrom_we_out(cx4_datrom_we),
   .cx4_reset_out(cx4_reset),
   .region_out(mcu_region)
 );
@@ -256,33 +265,37 @@ my_dcm snes_dcm(
   .STATUS(DCM_STATUS)
 );
 
-my_dcm snes_dcm2(
-  .CLKIN(SNES_SYSCLK),
-  .CLKFX(SYSCLK2),
-  .RST(DCM_RST)
-);
-
 assign DCM_RST=0;
 
-reg [5:0] SNES_PARDr;
-reg [5:0] SNES_READr;
-reg [5:0] SNES_WRITEr;
-reg [5:0] SNES_CPU_CLKr;
+reg [7:0] SNES_PARDr;
+reg [7:0] SNES_PAWRr;
+reg [7:0] SNES_READr;
+reg [7:0] SNES_WRITEr;
+reg [7:0] SNES_CPU_CLKr;
 
-wire SNES_PARD_start = (SNES_PARDr == 6'b111110);
-wire SNES_RD_start = (SNES_READr == 6'b111110);
-wire SNES_WR_start = (SNES_WRITEr == 6'b111110);
-wire SNES_cycle_start = (SNES_CPU_CLKr[5:0] == 6'b000001);
-wire SNES_cycle_end = (SNES_CPU_CLKr[5:0] == 6'b111110);
+wire SNES_FAKE_CLK = &SNES_CPU_CLKr[2:1];
+//wire SNES_FAKE_CLK = ~(SNES_READ & SNES_WRITE);
 
-always @(posedge SYSCLK2) begin
-  SNES_PARDr <= {SNES_PARDr[4:0], SNES_PARD};
+reg SNES_DEADr;
+initial SNES_DEADr = 0;
+
+wire SNES_PARD_start = (SNES_PARDr[7:1] == 7'b1111110);
+wire SNES_PAWR_start = (SNES_PAWRr[7:1] == 7'b0000001);
+wire SNES_RD_start = (SNES_READr[7:1] == 7'b1111110);
+wire SNES_WR_start = (SNES_WRITEr[7:1] == 7'b1111110);
+wire SNES_WR_end = (SNES_WRITEr[7:1] == 7'b0000001);
+wire SNES_cycle_start = ((SNES_CPU_CLKr[7:2] & SNES_CPU_CLKr[6:1]) == 6'b000001);
+wire SNES_cycle_end = ((SNES_CPU_CLKr[7:2] & SNES_CPU_CLKr[6:1]) == 6'b111110);
+
+always @(posedge CLK2) begin
+  SNES_PARDr <= {SNES_PARDr[6:0], SNES_PARD};
 end
 
 always @(posedge CLK2) begin
-  SNES_READr <= {SNES_READr[4:0], SNES_READ};
-  SNES_WRITEr <= {SNES_WRITEr[4:0], SNES_WRITE};
-  SNES_CPU_CLKr <= {SNES_CPU_CLKr[4:0], SNES_CPU_CLK};
+  SNES_PAWRr <= {SNES_PAWRr[6:0], SNES_PAWR};
+  SNES_READr <= {SNES_READr[6:0], SNES_READ};
+  SNES_WRITEr <= {SNES_WRITEr[6:0], SNES_WRITE};
+  SNES_CPU_CLKr <= {SNES_CPU_CLKr[6:0], SNES_CPU_CLK};
 end
 
 address snes_addr(
@@ -304,7 +317,11 @@ address snes_addr(
   //CX4
   .cx4_enable(cx4_enable),
   .cx4_vect_enable(cx4_vect_enable),
-  .r213f_enable(r213f_enable)
+  //region
+  .r213f_enable(r213f_enable),
+  //CMD Interface
+  .snescmd_rd_enable(snescmd_rd_enable),
+  .snescmd_wr_enable(snescmd_wr_enable)
 );
 
 reg [7:0] CX4_DINr;
@@ -313,9 +330,9 @@ wire [23:0] CX4_ADDR;
 cx4 snes_cx4 (
     .DI(CX4_SNES_DATA_IN), 
     .DO(CX4_SNES_DATA_OUT), 
-    .ADDR(SNES_ADDR[12:0]),
+    .ADDR(SNES_ADDR[12:0]), 
     .CS(cx4_enable), 
-    .SNES_VECT_EN(cx4_vect_enable),
+    .SNES_VECT_EN(cx4_vect_enable), 
     .nRD(SNES_READ), 
     .nWR(SNES_WRITE), 
     .CLK(CLK2), 
@@ -325,10 +342,10 @@ cx4 snes_cx4 (
     .BUS_DI(CX4_DINr), 
     .BUS_ADDR(CX4_ADDR), 
     .BUS_RRQ(CX4_RRQ), 
-    .BUS_RDY(CX4_RDY),
+    .BUS_RDY(CX4_RDY), 
     .cx4_active(cx4_active)
     );
-   
+	 
 parameter MODE_SNES = 1'b0;
 parameter MODE_MCU = 1'b1;
 
@@ -351,25 +368,28 @@ parameter ST_MCU_WR_WAIT2 = 21'b000001000000000000000;
 parameter ST_MCU_WR_END   = 21'b000010000000000000000;
 parameter ST_CX4_RD_ADDR  = 21'b000100000000000000000;
 parameter ST_CX4_RD_WAIT  = 21'b001000000000000000000;
-parameter ST_CX4_RD_WAIT2 = 21'b010000000000000000000;
-parameter ST_CX4_RD_END   = 21'b100000000000000000000;
+parameter ST_CX4_RD_END   = 21'b010000000000000000000;
 
-parameter ROM_RD_WAIT = 4'h4;
+parameter ROM_RD_WAIT = 4'h0;
 parameter ROM_RD_WAIT_MCU = 4'h6;
+parameter ROM_WR_WAIT = 4'h4;
 parameter ROM_WR_WAIT1 = 4'h2;
-parameter ROM_WR_WAIT2 = 4'h3;
-parameter ROM_WR_WAIT_MCU = 4'h6;
+parameter ROM_WR_WAIT2 = 4'h1;
+parameter ROM_WR_WAIT_MCU = 4'h5;
 parameter ROM_RD_WAIT_CX4 = 4'h6;
 
+parameter SNES_DEAD_TIMEOUT = 17'd88000; // 1ms
+
 reg [20:0] STATE;
 initial STATE = ST_IDLE;
 
+reg [7:0] SNES_DINr;
+reg [7:0] SNES_DOUTr;
+reg [7:0] ROM_DOUTr;
+
 assign MSU_SNES_DATA_IN = SNES_DATA;
 assign CX4_SNES_DATA_IN = SNES_DATA;
 
-reg [7:0] SNES_DINr;
-reg [7:0] ROM_DOUTr;
-
 reg [7:0] r213fr;
 reg r213f_forceread;
 reg [2:0] r213f_delay;
@@ -379,13 +399,15 @@ initial r213f_forceread = 0;
 initial r213f_state = 2'b01;
 initial r213f_delay = 3'b011;
 
-assign SNES_DATA = (r213f_enable & (!SNES_PARD ^ r213f_forceread)) ? r213fr
-                   :(!SNES_READ ^ r213f_forceread)
-                     ? (msu_enable ? MSU_SNES_DATA_OUT
-                       :cx4_enable ? CX4_SNES_DATA_OUT
-                       :(cx4_active & cx4_vect_enable) ? CX4_SNES_DATA_OUT
-                       :SNES_DINr)
-                    : 8'bZ;
+reg[7:0] snescmd_regs[15:0];
+
+assign SNES_DATA = (snescmd_rd_enable & ~SNES_PARD) ? snescmd_regs[SNES_ADDR[3:0]]
+                   :(r213f_enable & ~SNES_PARD & ~r213f_forceread) ? r213fr
+                   :(~SNES_READ ^ (r213f_forceread & r213f_enable & ~SNES_PARD))
+                                ? (msu_enable ? MSU_SNES_DATA_OUT
+                                  :cx4_enable ? CX4_SNES_DATA_OUT
+											 :(cx4_active & cx4_vect_enable) ? CX4_SNES_DATA_OUT
+                                  :SNES_DOUTr /*(ROM_ADDR0 ? ROM_DATA[7:0] : ROM_DATA[15:8])*/) : 8'bZ;
 
 reg [3:0] ST_MEM_DELAYr;
 reg MCU_RD_PENDr;
@@ -399,25 +421,61 @@ always @(posedge CLK2) begin
 end
 
 wire IS_CART = IS_ROM | IS_SAVERAM | IS_WRITABLE;
-wire ASSERT_SNES_ADDR = SNES_CPU_CLK & NEED_SNES_ADDRr & IS_CART & ~cx4_active;
-
-assign ROM_ADDR  = (SD_DMA_TO_ROM) ? MCU_ADDR[23:1] : (ASSERT_SNES_ADDR) ? MAPPED_SNES_ADDR[23:1] : ROM_ADDRr[23:1];
-assign ROM_ADDR0 = (SD_DMA_TO_ROM) ? MCU_ADDR[0] : (ASSERT_SNES_ADDR) ? MAPPED_SNES_ADDR[0] : ROM_ADDRr[0];
-
-reg ROM_WEr;
-initial ROM_WEr = 1'b1;
 
 reg RQ_MCU_RDYr;
 initial RQ_MCU_RDYr = 1'b1;
 assign MCU_RDY = RQ_MCU_RDYr;
 
+reg RQ_CX4_RDYr;
+initial RQ_CX4_RDYr = 1'b1;
+assign CX4_RDY = RQ_CX4_RDYr;
+
+reg ROM_SAr;
+initial ROM_SAr = 1'b1;
+wire ROM_SA = ROM_SAr;
+
+reg ROM_CAr;
+initial ROM_CAr = 1'b0;
+wire ROM_CA = ROM_CAr;
+
+reg [23:0] CX4_ADDRr;
+
+assign ROM_ADDR  = (SD_DMA_TO_ROM) ? MCU_ADDR[23:1] : ROM_CA ? CX4_ADDRr[23:1] : ROM_SA ? MAPPED_SNES_ADDR[23:1] : ROM_ADDRr[23:1];
+assign ROM_ADDR0 = (SD_DMA_TO_ROM) ? MCU_ADDR[0] : ROM_CA ? CX4_ADDRr[0] : ROM_SA ? MAPPED_SNES_ADDR[0] : ROM_ADDRr[0];
+
+reg ROM_WEr;
+initial ROM_WEr = 1'b1;
+reg ROM_DOUT_ENr;
+initial ROM_DOUT_ENr = 1'b0;
+
+reg[17:0] SNES_DEAD_CNTr;
+initial SNES_DEAD_CNTr = 0;
+
+always @(posedge CLK2) begin
+  if(cx4_active) begin
+    if(CX4_RRQ) begin
+	   CX4_RD_PENDr <= 1'b1;
+		RQ_CX4_RDYr <= 1'b0;
+		CX4_ADDRr <= CX4_ADDR;
+	 end else if(STATE == ST_CX4_RD_END) begin
+	   CX4_RD_PENDr <= 1'b0;
+		RQ_CX4_RDYr <= 1'b1;
+	 end
+  end else begin
+    CX4_RD_PENDr <= 1'b0;
+	 RQ_CX4_RDYr <= 1'b1;
+  end
+end
+
 always @(posedge CLK2) begin
   if(MCU_RRQ) begin
     MCU_RD_PENDr <= 1'b1;
     RQ_MCU_RDYr <= 1'b0;
+    ROM_ADDRr <= MCU_ADDR;
   end else if(MCU_WRQ) begin
     MCU_WR_PENDr <= 1'b1;
     RQ_MCU_RDYr <= 1'b0;
+    ROM_ADDRr <= MCU_ADDR;
   end else if(STATE & (ST_MCU_RD_END | ST_MCU_WR_END)) begin
     MCU_RD_PENDr <= 1'b0;
     MCU_WR_PENDr <= 1'b0;
@@ -425,157 +483,144 @@ always @(posedge CLK2) begin
   end
 end
 
-reg RQ_CX4_RDYr;
-initial RQ_CX4_RDYr = 1'b1;
-assign CX4_RDY = RQ_CX4_RDYr;
-
 always @(posedge CLK2) begin
-  if(CX4_RRQ) begin
-    CX4_RD_PENDr <= 1'b1;
-    RQ_CX4_RDYr <= 1'b0;
-  end else if(STATE == ST_CX4_RD_WAIT && ST_MEM_DELAYr == 4'h0) begin
-    CX4_RD_PENDr <= 1'b0;
-    RQ_CX4_RDYr <= 1'b1;
-  end
+  if(~SNES_CPU_CLK) SNES_DEAD_CNTr <= SNES_DEAD_CNTr + 1;
+  else SNES_DEAD_CNTr <= 17'h0;
 end
 
-reg snes_wr_cycle;
+always @(posedge CLK2) begin
+  if(SNES_DEAD_CNTr > SNES_DEAD_TIMEOUT) SNES_DEADr <= 1'b1;
+  else if(SNES_CPU_CLK) SNES_DEADr <= 1'b0;
+end
 
 always @(posedge CLK2) begin
-  if(SNES_cycle_start & IS_CART & ~cx4_active) begin
-    STATE <= ST_SNES_RD_ADDR;
-  end else if(SNES_WR_start & IS_CART & ~cx4_active) begin
-    STATE <= ST_SNES_WR_ADDR;
-  end else begin
-    case(STATE)
-      ST_IDLE: begin
-        ROM_ADDRr <= MAPPED_SNES_ADDR;
-        if(CX4_RD_PENDr) begin
-          STATE <= ST_CX4_RD_WAIT;
-          ROM_ADDRr <= CX4_ADDR;
-          ST_MEM_DELAYr <= ROM_RD_WAIT_CX4;
-        end else if(~cx4_active && ~ASSERT_SNES_ADDR) begin
-          if(MCU_RD_PENDr) STATE <= ST_MCU_RD_ADDR;
-          else if(MCU_WR_PENDr) STATE <= ST_MCU_WR_ADDR;
-          else STATE <= ST_IDLE;
+  if(SNES_DEADr & SNES_CPU_CLK) STATE <= ST_IDLE; // interrupt+restart an ongoing MCU access when the SNES comes alive
+  else
+  case(STATE)
+    ST_IDLE: begin
+	   ROM_SAr <= 1'b1;
+		ROM_CAr <= 1'b0;
+		ROM_DOUT_ENr <= 1'b0;
+		if(cx4_active) begin
+        if(CX4_RD_PENDr) STATE <= ST_CX4_RD_ADDR;
+		end else if(SNES_cycle_start & ~SNES_WRITE) begin
+		  STATE <= ST_SNES_WR_ADDR;
+		  if(IS_SAVERAM | IS_WRITABLE) begin
+		    ROM_WEr <= 1'b0;
+          ROM_DOUT_ENr <= 1'b1;
         end
-        else STATE <= ST_IDLE;
-      end
-      ST_SNES_RD_ADDR: begin
-        STATE <= ST_SNES_RD_WAIT;
-        ST_MEM_DELAYr <= ROM_RD_WAIT;
-      end
-      ST_SNES_RD_WAIT: begin
-        ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-        if(ST_MEM_DELAYr == 4'h0) STATE <= ST_SNES_RD_END;
-        else STATE <= ST_SNES_RD_WAIT;
-        if(ROM_ADDR0) SNES_DINr <= ROM_DATA[7:0];
-        else SNES_DINr <= ROM_DATA[15:8];
-      end
-      ST_SNES_RD_END: begin
-        STATE <= ST_IDLE;
-        if(ROM_ADDR0) SNES_DINr <= ROM_DATA[7:0];
-        else SNES_DINr <= ROM_DATA[15:8];
-      end
-      ST_SNES_WR_ADDR: begin
-        ROM_WEr <= (!IS_WRITABLE);
-        snes_wr_cycle <= 1'b1;
-        STATE <= ST_SNES_WR_WAIT1;
-        ST_MEM_DELAYr <= ROM_WR_WAIT1;
-      end
-      ST_SNES_WR_WAIT1: begin
-        ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-        if(ST_MEM_DELAYr == 4'h0) STATE <= ST_SNES_WR_DATA;
-        else STATE <= ST_SNES_WR_WAIT1;
-      end
-      ST_SNES_WR_DATA: begin
-        ROM_DOUTr <= SNES_DATA;
-        ST_MEM_DELAYr <= ROM_WR_WAIT2;
+		end else if(SNES_cycle_start) begin
+//		  STATE <= ST_SNES_RD_ADDR;		  
+        STATE <= ST_SNES_RD_END;
+        SNES_DOUTr <= (ROM_ADDR0 ? ROM_DATA[7:0] : ROM_DATA[15:8]);
+		end else if(SNES_DEADr & MCU_RD_PENDr) begin
+		  STATE <= ST_MCU_RD_ADDR;
+		end else if(SNES_DEADr & MCU_WR_PENDr) begin
+		  STATE <= ST_MCU_WR_ADDR;
+		end
+	 end
+	 ST_SNES_RD_ADDR: begin
+	   ST_MEM_DELAYr <= ROM_RD_WAIT;
+		STATE <= ST_SNES_RD_WAIT;
+	 end
+	 ST_SNES_RD_WAIT: begin
+	   ST_MEM_DELAYr <= ST_MEM_DELAYr - 1;
+//		if(ST_MEM_DELAYr == 0) begin
+//		end
+//		else STATE <= ST_SNES_RD_WAIT;
+	 end
+	 
+	 ST_SNES_WR_ADDR: begin
+	   ST_MEM_DELAYr <= ROM_WR_WAIT1;
+	   STATE <= ST_SNES_WR_WAIT1;
+	 end
+	 ST_SNES_WR_WAIT1: begin
+	   ST_MEM_DELAYr <= ST_MEM_DELAYr - 1;
+		if(ST_MEM_DELAYr == 0) begin
+		  ST_MEM_DELAYr <= ROM_WR_WAIT2;
         STATE <= ST_SNES_WR_WAIT2;
-      end
-      ST_SNES_WR_WAIT2: begin
-        ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-        if(ST_MEM_DELAYr == 4'h0) STATE <= ST_SNES_WR_END;
-        else STATE <= ST_SNES_WR_WAIT2;
-      end
-      ST_SNES_WR_END: begin
-        STATE <= ST_IDLE;
-        ROM_WEr <= 1'b1;
-        snes_wr_cycle <= 1'b0;
-      end
-      ST_MCU_RD_ADDR: begin
-        ROM_ADDRr <= MCU_ADDR;
-        STATE <= ST_MCU_RD_WAIT;
-        ST_MEM_DELAYr <= ROM_RD_WAIT_MCU;
-      end
-      ST_MCU_RD_WAIT: begin
-        ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-        if(ST_MEM_DELAYr == 4'h0) begin
-          STATE <= ST_MCU_RD_WAIT2;
-          ST_MEM_DELAYr <= 4'h2;
-          if(ROM_ADDR0) MCU_DINr <= ROM_DATA[7:0];
-          else MCU_DINr <= ROM_DATA[15:8];
-        end
-        else STATE <= ST_MCU_RD_WAIT;
-      end
-      ST_MCU_RD_WAIT2: begin
-        ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-        if(ST_MEM_DELAYr == 4'h0) begin
-          STATE <= ST_MCU_RD_END;
-        end else STATE <= ST_MCU_RD_WAIT2;
-      end
-      ST_MCU_RD_END: begin
-        STATE <= ST_IDLE;
-      end
-      ST_MCU_WR_ADDR: begin
-        ROM_ADDRr <= MCU_ADDR;
-        STATE <= ST_MCU_WR_WAIT;
-        ST_MEM_DELAYr <= ROM_WR_WAIT_MCU;
-        ROM_DOUTr <= MCU_DOUT;
-        ROM_WEr <= 1'b0;
-      end
-      ST_MCU_WR_WAIT: begin
-        ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-        if(ST_MEM_DELAYr == 4'h0) begin
-          ROM_WEr <= 1'b1;
-          STATE <= ST_MCU_WR_WAIT2;
-          ST_MEM_DELAYr <= 4'h2;
-        end
-        else STATE <= ST_MCU_WR_WAIT;
-      end
-      ST_MCU_WR_WAIT2: begin
-        ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-        if(ST_MEM_DELAYr == 4'h0) begin
-          STATE <= ST_MCU_WR_END;
-        end else STATE <= ST_MCU_WR_WAIT2;
-      end
-      ST_MCU_WR_END: begin
-        STATE <= ST_IDLE;
-      end
-
-      ST_CX4_RD_ADDR: begin
-        ROM_ADDRr <= CX4_ADDR;
-        STATE <= ST_CX4_RD_WAIT;
-        ST_MEM_DELAYr <= ROM_RD_WAIT_CX4;
-      end
-      ST_CX4_RD_WAIT: begin
-        ST_MEM_DELAYr <= ST_MEM_DELAYr - 4'h1;
-        if(ST_MEM_DELAYr == 4'h0) STATE <= ST_IDLE;
-        else STATE <= ST_CX4_RD_WAIT;
-        if(ROM_ADDR0) CX4_DINr <= ROM_DATA[7:0];
-        else CX4_DINr <= ROM_DATA[15:8];
-      end
-      ST_CX4_RD_END: begin
-        STATE <= ST_IDLE;
-      end
-    endcase
-  end
+		  ROM_DOUTr <= SNES_DATA;
+		end
+		else STATE <= ST_SNES_WR_WAIT1;
+	 end
+	 ST_SNES_WR_WAIT2: begin
+	   ST_MEM_DELAYr <= ST_MEM_DELAYr - 1;
+		if(ST_MEM_DELAYr == 0) begin
+        STATE <= ST_SNES_WR_END;
+		  ROM_WEr <= 1'b1;
+		end
+		else STATE <= ST_SNES_WR_WAIT2;
+    end
+	 ST_SNES_RD_END, ST_SNES_WR_END: begin
+	   ROM_DOUT_ENr <= 1'b0;		
+      if(MCU_RD_PENDr) begin
+        STATE <= ST_MCU_RD_ADDR;
+      end else if(MCU_WR_PENDr) begin
+        STATE <= ST_MCU_WR_ADDR;
+      end else STATE <= ST_IDLE;
+    end
+    ST_MCU_RD_ADDR: begin
+      ROM_SAr <= 1'b0;
+		ST_MEM_DELAYr <= ROM_RD_WAIT_MCU;
+		STATE <= ST_MCU_RD_WAIT;
+	 end
+	 ST_MCU_RD_WAIT: begin
+	   ST_MEM_DELAYr <= ST_MEM_DELAYr - 1;
+		if(ST_MEM_DELAYr == 0) begin
+        STATE <= ST_MCU_RD_END;
+		end
+		else STATE <= ST_MCU_RD_WAIT;
+	 end
+	 ST_MCU_RD_END: begin
+      MCU_DINr <= ROM_ADDRr[0] ? ROM_DATA[7:0] : ROM_DATA[15:8];
+	   STATE <= ST_IDLE;
+	 end
+	 
+	 ST_MCU_WR_ADDR: begin
+      ROM_DOUTr <= MCU_DOUT;
+      ROM_SAr <= 1'b0;
+	   ST_MEM_DELAYr <= ROM_WR_WAIT_MCU;
+		STATE <= ST_MCU_WR_WAIT;
+		ROM_DOUT_ENr <= 1'b1;
+		ROM_WEr <= 1'b0;
+	 end
+	 ST_MCU_WR_WAIT: begin
+	   ST_MEM_DELAYr <= ST_MEM_DELAYr - 1;
+		if(ST_MEM_DELAYr == 0) begin
+		  ROM_WEr <= 1'b1;
+		  STATE <= ST_MCU_WR_END;
+		end
+		else STATE <= ST_MCU_WR_WAIT;	 
+	 end
+	 ST_MCU_WR_END: begin
+		ROM_DOUT_ENr <= 1'b0;
+	   STATE <= ST_IDLE;
+	 end
+	 ST_CX4_RD_ADDR: begin
+	   ROM_CAr <= 1'b1;
+	   ST_MEM_DELAYr <= ROM_RD_WAIT_CX4;
+		STATE <= ST_CX4_RD_WAIT;
+	 end
+	 ST_CX4_RD_WAIT: begin
+	   ST_MEM_DELAYr <= ST_MEM_DELAYr - 1;
+		if(ST_MEM_DELAYr == 0) begin
+		  STATE <= ST_CX4_RD_END;
+		end
+		else STATE <= ST_CX4_RD_WAIT;
+	 end
+	 ST_CX4_RD_END: begin
+	   ROM_CAr <= 1'b0;
+	   CX4_DINr <= CX4_ADDRr[0] ? ROM_DATA[7:0] : ROM_DATA[15:8];
+	   STATE <= ST_IDLE;
+	 end
+	 
+  endcase
 end
 
-always @(posedge SYSCLK2) begin
-  if(SNES_PARD_start & r213f_enable) begin
-    r213f_forceread <= 1'b1;
-    r213f_delay <= 3'b001;
+always @(posedge CLK2) begin
+  if(SNES_cycle_end) r213f_forceread <= 1'b1;
+  else if(SNES_PARD_start & r213f_enable) begin
+    r213f_delay <= 3'b000;
     r213f_state <= 2'b10;
   end else if(r213f_state == 2'b10) begin
     r213f_delay <= r213f_delay - 1;
@@ -587,44 +632,109 @@ always @(posedge SYSCLK2) begin
   end
 end
 
+always @(posedge CLK2) begin
+  if(SNES_WR_end & snescmd_wr_enable) begin
+    snescmd_regs[SNES_ADDR[3:0]] <= SNES_DATA;
+  end
+end
+
+reg ROM_WE_1;
+reg MCU_WRITE_1;
+
+always @(posedge CLK2) begin
+  ROM_WE_1 <= ROM_WE;
+  MCU_WRITE_1<= MCU_WRITE;
+end
+
 assign ROM_DATA[7:0] = ROM_ADDR0
-                       ?(SD_DMA_TO_ROM ? (!MCU_WRITE ? MCU_DOUT : 8'bZ)
-                                        : (!ROM_WE ? ROM_DOUTr : 8'bZ)
+                       ?(SD_DMA_TO_ROM ? (!MCU_WRITE_1 ? MCU_DOUT : 8'bZ)
+							                   /*: ((~SNES_WRITE & (IS_WRITABLE | IS_FLASHWR)) ? SNES_DATA */
+                                        : (ROM_DOUT_ENr ? ROM_DOUTr : 8'bZ) //)
                         )
                        :8'bZ;
 
 assign ROM_DATA[15:8] = ROM_ADDR0 ? 8'bZ
-                        :(SD_DMA_TO_ROM ? (!MCU_WRITE ? MCU_DOUT : 8'bZ)
-                                         : (!ROM_WE ? ROM_DOUTr : 8'bZ)
+                        :(SD_DMA_TO_ROM ? (!MCU_WRITE_1 ? MCU_DOUT : 8'bZ)
+								                 /*:  ((~SNES_WRITE & (IS_WRITABLE | IS_FLASHWR)) ? SNES_DATA */
+                                         : (ROM_DOUT_ENr ? ROM_DOUTr : 8'bZ) //)
                          );
 
 assign ROM_WE = SD_DMA_TO_ROM
                 ?MCU_WRITE
-                :ROM_WEr | (ASSERT_SNES_ADDR & ~snes_wr_cycle);
+                :/*(SNES_FAKE_CLK & (IS_WRITABLE | IS_FLASHWR)) ? SNES_WRITE :*/ ROM_WEr;
 
 // OE always active. Overridden by WE when needed.
 assign ROM_OE = 1'b0;
 
 assign ROM_CE = 1'b0;
 
-assign ROM_BHE = !ROM_WE ? ROM_ADDR0 : 1'b0;
-assign ROM_BLE = !ROM_WE ? !ROM_ADDR0 : 1'b0;
+assign ROM_BHE = /*(~SD_DMA_TO_ROM & ~ROM_WE & ~ROM_SA) ?*/ ROM_ADDR0 /*: 1'b0*/;
+assign ROM_BLE = /*(~SD_DMA_TO_ROM & ~ROM_WE & ~ROM_SA) ?*/ !ROM_ADDR0 /*: 1'b0*/;
 
 assign SNES_DATABUS_OE = msu_enable ? 1'b0 :
                          cx4_enable ? 1'b0 :
-                         (cx4_active & cx4_vect_enable) ? 1'b0 :
+								 (cx4_active & cx4_vect_enable) ? 1'b0 :
                          r213f_enable & !SNES_PARD ? 1'b0 :
-                         ((!IS_ROM & !IS_SAVERAM & !IS_WRITABLE)
-                          |(SNES_READ & SNES_WRITE)
+								 (snescmd_wr_enable | snescmd_rd_enable) & !SNES_PARD ? 1'b0 :
+                         ((IS_ROM & SNES_CS)
+                          |(!IS_ROM & !IS_SAVERAM & !IS_WRITABLE)
+                          |(SNES_READr[0] & SNES_WRITEr[0])
                          );
 
-assign SNES_DATABUS_DIR = (!SNES_READ | (!SNES_PARD & r213f_enable))
-                           ? 1'b1 ^ r213f_forceread
+assign SNES_DATABUS_DIR = (!SNES_READr[0] | (!SNES_PARD & (r213f_enable | snescmd_rd_enable)))
+                           ? 1'b1 ^ (r213f_forceread & r213f_enable & ~SNES_PARD)
                            : 1'b0;
 
-assign IRQ_DIR = 1'b0;
-assign SNES_IRQ = 1'bZ;
+assign SNES_IRQ = 1'b0;
 
 assign p113_out = 1'b0;
 
+/*
+wire [35:0] CONTROL0;
+
+icon icon (
+    .CONTROL0(CONTROL0) // INOUT BUS [35:0]
+);
+
+ila ila (
+    .CONTROL(CONTROL0), // INOUT BUS [35:0]
+    .CLK(CLK2), // IN
+    .TRIG0(SNES_ADDR), // IN BUS [23:0]
+    .TRIG1(SNES_DATA), // IN BUS [7:0]
+    .TRIG2({SNES_READ, SNES_WRITE, SNES_CPU_CLK, SNES_cycle_start, SNES_cycle_end, SNES_DEADr, MCU_RRQ, MCU_WRQ, MCU_RDY, cx4_active, ROM_WE, ROM_DOUT_ENr, ROM_SA, CX4_RRQ, CX4_RDY, ROM_CA}), // IN BUS [15:0]
+    .TRIG3(ROM_ADDRr), // IN BUS [23:0]
+    .TRIG4(CX4_ADDRr), // IN BUS [23:0]
+    .TRIG5(ROM_DATA), // IN BUS [15:0]
+    .TRIG6(CX4_DINr), // IN BUS [7:0]
+    .TRIG7(STATE) // IN BUS [21:0]
+);*/
+/*
+ila ila (
+    .CONTROL(CONTROL0), // INOUT BUS [35:0]
+    .CLK(CLK2), // IN
+    .TRIG0(SNES_ADDR), // IN BUS [23:0]
+    .TRIG1(SNES_DATA), // IN BUS [7:0]
+    .TRIG2({SNES_READ, SNES_WRITE, SNES_CPU_CLK, SNES_cycle_start, SNES_cycle_end, SNES_DEADr, MCU_RRQ, MCU_WRQ, MCU_RDY, ROM_WEr, ROM_WE, ROM_DOUT_ENr, ROM_SA, DBG_mcu_nextaddr, SNES_DATABUS_DIR, SNES_DATABUS_OE}),	 // IN BUS [15:0]
+    .TRIG3({bsx_data_ovr, SPI_SCK, SPI_MISO, SPI_MOSI, spi_cmd_ready, spi_param_ready, spi_input_data, SD_DAT}), // IN BUS [17:0]
+    .TRIG4(ROM_ADDRr), // IN BUS [23:0]
+    .TRIG5(ROM_DATA), // IN BUS [15:0]
+    .TRIG6(MCU_DINr), // IN BUS [7:0]
+	 .TRIG7(spi_byte_cnt[3:0])
+);
+*/
+/*
+ila_srtc ila (
+    .CONTROL(CONTROL0), // INOUT BUS [35:0]
+    .CLK(CLK2), // IN
+    .TRIG0(SD_DMA_DBG_cyclecnt), // IN BUS [23:0]
+    .TRIG1(SD_DMA_SRAM_DATA), // IN BUS [7:0]
+    .TRIG2({SPI_SCK, SPI_MOSI, SPI_MISO, spi_cmd_ready, SD_DMA_SRAM_WE, SD_DMA_EN, SD_CLK, SD_DAT, SD_DMA_NEXTADDR, SD_DMA_STATUS, 3'b000}),	 // IN BUS [15:0]
+    .TRIG3({spi_cmd_data, spi_param_data}), // IN BUS [17:0]
+    .TRIG4(ROM_ADDRr), // IN BUS [23:0]
+    .TRIG5(ROM_DATA), // IN BUS [15:0]
+    .TRIG6(MCU_DINr), // IN BUS [7:0]
+	 .TRIG7(ST_MEM_DELAYr)
+);
+*/
+
 endmodule

verilog/sd2snes_cx4/msu.v

@@ -38,7 +38,13 @@ module msu(
   input [5:0] status_set_bits,
   input status_reset_we,
   input [13:0] msu_address_ext,
-  input msu_address_ext_write
+  input msu_address_ext_write,
+  
+  output DBG_msu_reg_oe_rising,
+  output DBG_msu_reg_oe_falling,
+  output DBG_msu_reg_we_rising,
+  output [13:0] DBG_msu_address,
+  output DBG_msu_address_ext_write_rising
 );
 
 reg [2:0] reg_addr_r [3:0];
@@ -56,13 +62,15 @@ wire status_reset_en = (status_reset_we_r == 2'b01);
 
 reg [13:0] msu_address_r;
 wire [13:0] msu_address = msu_address_r;
+initial msu_address_r = 13'b0;
 
 wire [7:0] msu_data;
+reg [7:0] msu_data_r;
 
-reg [1:0] msu_address_ext_write_sreg;
+reg [2:0] msu_address_ext_write_sreg;
 always @(posedge clkin)
-  msu_address_ext_write_sreg <= {msu_address_ext_write_sreg[0], msu_address_ext_write};
-wire msu_address_ext_write_rising = (msu_address_ext_write_sreg[1:0] == 2'b01);
+  msu_address_ext_write_sreg <= {msu_address_ext_write_sreg[1:0], msu_address_ext_write};
+wire msu_address_ext_write_rising = (msu_address_ext_write_sreg[2:1] == 2'b01);
 
 reg [4:0] reg_enable_sreg;
 initial reg_enable_sreg = 5'b11111;
@@ -70,11 +78,12 @@ always @(posedge clkin) reg_enable_sreg <= {reg_enable_sreg[3:0], enable};
 
 reg [5:0] reg_oe_sreg;
 always @(posedge clkin) reg_oe_sreg <= {reg_oe_sreg[4:0], reg_oe};
-wire reg_oe_rising = reg_enable_sreg[4] && (reg_oe_sreg[5:0] == 6'b000001);
+wire reg_oe_rising = reg_enable_sreg[4] && (reg_oe_sreg[5:1] == 5'b00001);
+wire reg_oe_falling = reg_enable_sreg[1] && (reg_oe_sreg[5:1] == 5'b11110);
 
 reg [5:0] reg_we_sreg;
 always @(posedge clkin) reg_we_sreg <= {reg_we_sreg[4:0], reg_we};
-wire reg_we_rising = reg_enable_sreg[4] && (reg_we_sreg[5:0] == 6'b000001);
+wire reg_we_rising = reg_enable_sreg[4] && (reg_we_sreg[5:1] == 5'b00001);
 
 reg [31:0] addr_out_r;
 assign addr_out = addr_out_r;
@@ -93,14 +102,27 @@ reg audio_busy_r;
 reg data_start_r;
 reg data_busy_r;
 reg ctrl_start_r;
+reg audio_error_r;
 reg [1:0] audio_ctrl_r;
 reg [1:0] audio_status_r;
 
 initial begin
-  audio_busy_r <= 1'b1;
-  data_busy_r <= 1'b1;
+  audio_busy_r = 1'b1;
+  data_busy_r = 1'b1;
+  audio_error_r = 1'b0;
+  volume_r = 8'h00;
+  addr_out_r = 32'h00000000;
+  track_out_r = 16'h0000;
+  data_start_r = 1'b0;
+  audio_start_r = 1'b0;
 end
 
+assign DBG_msu_address = msu_address;
+assign DBG_msu_reg_oe_rising = reg_oe_rising;
+assign DBG_msu_reg_oe_falling = reg_oe_falling;
+assign DBG_msu_reg_we_rising = reg_we_rising;
+assign DBG_msu_address_ext_write_rising = msu_address_ext_write_rising;
+
 assign status_out = {msu_address_r[13], // 6
                      audio_start_r,     // 5
                      data_start_r,      // 4
@@ -124,8 +146,8 @@ reg [7:0] data_out_r;
 assign reg_data_out = data_out_r;
 
 always @(posedge clkin) begin
-  case(reg_addr_r[3])
-    3'h0: data_out_r <= {data_busy_r, audio_busy_r, audio_status_r, 4'b0001};
+  case(reg_addr_r[1])
+    3'h0: data_out_r <= {data_busy_r, audio_busy_r, audio_status_r, audio_error_r, 3'b001};
     3'h1: data_out_r <= msu_data;
     3'h2: data_out_r <= 8'h53;
     3'h3: data_out_r <= 8'h2d;
@@ -138,7 +160,7 @@ end
 
 always @(posedge clkin) begin
   if(reg_we_rising) begin
-    case(reg_addr_r[3])
+    case(reg_addr_r[1])
       3'h0: addr_out_r[7:0] <= reg_data_in;
       3'h1: addr_out_r[15:8] <= reg_data_in;
       3'h2: addr_out_r[23:16] <= reg_data_in;
@@ -173,7 +195,7 @@ always @(posedge clkin) begin
     data_busy_r <= (data_busy_r | status_set_bits[4]) & ~status_reset_bits[4];
     if(status_reset_bits[4]) data_start_r <= 1'b0;
 
-//    volume_start_r <= (volume_start_r | status_set_bits[3]) & ~status_reset_bits[3];
+    audio_error_r <= (audio_error_r | status_set_bits[3]) & ~status_reset_bits[3];
 
     audio_status_r <= (audio_status_r | status_set_bits[2:1]) & ~status_reset_bits[2:1];
 

verilog/sd2snes_cx4/sd2snes_cx4.xise

@@ -9,95 +9,77 @@
     <!-- along with the project source files, is sufficient to open and    -->
     <!-- implement in ISE Project Navigator.                               -->
     <!--                                                                   -->
-    <!-- Copyright (c) 1995-2011 Xilinx, Inc.  All rights reserved. -->
+    <!-- Copyright (c) 1995-2012 Xilinx, Inc.  All rights reserved. -->
   </header>
 
-  <version xil_pn:ise_version="13.2" xil_pn:schema_version="2"/>
+  <version xil_pn:ise_version="14.1" xil_pn:schema_version="2"/>
 
   <files>
     <file xil_pn:name="address.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="1"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="15"/>
     </file>
     <file xil_pn:name="clk_test.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="2"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="7"/>
     </file>
     <file xil_pn:name="dac.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="3"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="13"/>
     </file>
     <file xil_pn:name="dcm.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="4"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="12"/>
     </file>
     <file xil_pn:name="main.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="5"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="16"/>
     </file>
     <file xil_pn:name="mcu_cmd.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="6"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="11"/>
     </file>
     <file xil_pn:name="msu.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="7"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="10"/>
     </file>
     <file xil_pn:name="sd_dma.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="8"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="9"/>
     </file>
     <file xil_pn:name="spi.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="9"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="8"/>
     </file>
-    <file xil_pn:name="main.ucf" xil_pn:type="FILE_UCF">
-      <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
-    </file>
     <file xil_pn:name="ipcore_dir/dac_buf.xco" xil_pn:type="FILE_COREGEN">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="10"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="2"/>
     </file>
     <file xil_pn:name="ipcore_dir/msu_databuf.xco" xil_pn:type="FILE_COREGEN">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="11"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="1"/>
     </file>
     <file xil_pn:name="cx4.v" xil_pn:type="FILE_VERILOG">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="5"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="12"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="14"/>
     </file>
     <file xil_pn:name="ipcore_dir/cx4_datrom.xco" xil_pn:type="FILE_COREGEN">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="3"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="13"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="5"/>
     </file>
     <file xil_pn:name="ipcore_dir/cx4_datram.xco" xil_pn:type="FILE_COREGEN">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="4"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="14"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="6"/>
     </file>
     <file xil_pn:name="ipcore_dir/cx4_pgmrom.xco" xil_pn:type="FILE_COREGEN">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="1"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="15"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="3"/>
     </file>
     <file xil_pn:name="ipcore_dir/cx4_mul.xco" xil_pn:type="FILE_COREGEN">
-      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="2"/>
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="16"/>
       <association xil_pn:name="Implementation" xil_pn:seqID="4"/>
     </file>
-    <file xil_pn:name="ipcore_dir/dac_buf.xise" xil_pn:type="FILE_COREGENISE">
-      <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
-    </file>
-    <file xil_pn:name="ipcore_dir/msu_databuf.xise" xil_pn:type="FILE_COREGENISE">
-      <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
-    </file>
-    <file xil_pn:name="ipcore_dir/cx4_datrom.xise" xil_pn:type="FILE_COREGENISE">
-      <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
-    </file>
-    <file xil_pn:name="ipcore_dir/cx4_datram.xise" xil_pn:type="FILE_COREGENISE">
-      <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
-    </file>
-    <file xil_pn:name="ipcore_dir/cx4_pgmrom.xise" xil_pn:type="FILE_COREGENISE">
-      <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
-    </file>
-    <file xil_pn:name="ipcore_dir/cx4_mul.xise" xil_pn:type="FILE_COREGENISE">
+    <file xil_pn:name="main.ucf" xil_pn:type="FILE_UCF">
       <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
     </file>
   </files>
@@ -257,7 +239,7 @@
     <property xil_pn:name="Number of Paths in Error/Verbose Report Post Trace" xil_pn:value="3" xil_pn:valueState="default"/>
     <property xil_pn:name="Optimization Effort" xil_pn:value="High" xil_pn:valueState="non-default"/>
     <property xil_pn:name="Optimization Goal" xil_pn:value="Speed" xil_pn:valueState="default"/>
-    <property xil_pn:name="Optimization Strategy (Cover Mode)" xil_pn:value="Speed" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Optimization Strategy (Cover Mode)" xil_pn:value="Area" xil_pn:valueState="default"/>
     <property xil_pn:name="Optimize Instantiated Primitives" xil_pn:value="true" xil_pn:valueState="non-default"/>
     <property xil_pn:name="Other Bitgen Command Line Options" xil_pn:value="" xil_pn:valueState="default"/>
     <property xil_pn:name="Other Compiler Options" xil_pn:value="" xil_pn:valueState="default"/>
@@ -282,7 +264,7 @@
     <property xil_pn:name="Output Extended Identifiers" xil_pn:value="false" xil_pn:valueState="default"/>
     <property xil_pn:name="Output File Name" xil_pn:value="main" xil_pn:valueState="default"/>
     <property xil_pn:name="Overwrite Compiled Libraries" xil_pn:value="false" xil_pn:valueState="default"/>
-    <property xil_pn:name="Pack I/O Registers into IOBs" xil_pn:value="No" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Pack I/O Registers into IOBs" xil_pn:value="Auto" xil_pn:valueState="default"/>
     <property xil_pn:name="Pack I/O Registers/Latches into IOBs" xil_pn:value="For Inputs and Outputs" xil_pn:valueState="non-default"/>
     <property xil_pn:name="Package" xil_pn:value="pq208" xil_pn:valueState="default"/>
     <property xil_pn:name="Perform Advanced Analysis" xil_pn:value="false" xil_pn:valueState="default"/>
@@ -366,8 +348,8 @@
     <property xil_pn:name="Specify Top Level Instance Names Post-Route" xil_pn:value="work.updtest" xil_pn:valueState="default"/>
     <property xil_pn:name="Specify Top Level Instance Names Post-Translate" xil_pn:value="work.updtest" xil_pn:valueState="default"/>
     <property xil_pn:name="Speed Grade" xil_pn:value="-4" xil_pn:valueState="non-default"/>
-    <property xil_pn:name="Starting Placer Cost Table (1-100) Map" xil_pn:value="4" xil_pn:valueState="non-default"/>
-    <property xil_pn:name="Starting Placer Cost Table (1-100) Par" xil_pn:value="4" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Starting Placer Cost Table (1-100) Map" xil_pn:value="3" xil_pn:valueState="non-default"/>
+    <property xil_pn:name="Starting Placer Cost Table (1-100) Par" xil_pn:value="3" xil_pn:valueState="non-default"/>
     <property xil_pn:name="Structure window" xil_pn:value="true" xil_pn:valueState="default"/>
     <property xil_pn:name="Synthesis Tool" xil_pn:value="XST (VHDL/Verilog)" xil_pn:valueState="default"/>
     <property xil_pn:name="Target Simulator" xil_pn:value="Please Specify" xil_pn:valueState="default"/>
@@ -438,9 +420,7 @@
     <property xil_pn:name="PROP_intWorkingDirUsed" xil_pn:value="No" xil_pn:valueState="non-default"/>
   </properties>
 
-  <bindings>
-    <binding xil_pn:location="/main" xil_pn:name="main.ucf"/>
-  </bindings>
+  <bindings/>
 
   <libraries/>
 

verilog/sd2snes_cx4/sd_dma.v

@@ -31,7 +31,10 @@ module sd_dma(
   input [10:0] SD_DMA_PARTIAL_START,
   input [10:0] SD_DMA_PARTIAL_END,
   input SD_DMA_START_MID_BLOCK,
-  input SD_DMA_END_MID_BLOCK
+  input SD_DMA_END_MID_BLOCK,
+  
+  output [10:0] DBG_cyclecnt,
+  output [2:0] DBG_clkcnt
 );
 
 reg [10:0] SD_DMA_STARTr;
@@ -74,7 +77,11 @@ assign SD_DMA_SRAM_DATA = SD_DMA_SRAM_DATAr;
 reg [2:0] clkcnt;
 initial clkcnt = 3'b000;
 reg [1:0] SD_CLKr;
-always @(posedge CLK) SD_CLKr <= {SD_CLKr[0], clkcnt[1]};
+initial SD_CLKr = 3'b111;
+always @(posedge CLK)
+  if(SD_DMA_EN_rising) SD_CLKr <= 3'b111;
+  else SD_CLKr <= {SD_CLKr[0], clkcnt[1]};
+
 assign SD_CLK = SD_DMA_STATUSr ? SD_CLKr[1] : 1'bZ;
 
 always @(posedge CLK) begin
@@ -116,20 +123,20 @@ always @(posedge CLK) begin
   if(SD_DMA_STATUSr) begin
     case(clkcnt[2:0])
       3'h0: begin
-        SD_DMA_SRAM_WEr <= 1'b1;
         SD_DMA_SRAM_DATAr[7:4] <= SD_DAT;
         if(cyclecnt>SD_DMA_STARTr && cyclecnt <= SD_DMA_ENDr) SD_DMA_NEXTADDRr <= 1'b1;
       end
-      3'h1:
+      3'h1: begin
         SD_DMA_NEXTADDRr <= 1'b0;
-//  3'h2:
-      3'h3:
-        if(cyclecnt>=SD_DMA_STARTr && cyclecnt < SD_DMA_ENDr) SD_DMA_SRAM_WEr <= 1'b0;
+		end
+      3'h2: if(cyclecnt>=SD_DMA_STARTr && cyclecnt < SD_DMA_ENDr) SD_DMA_SRAM_WEr <= 1'b0;
+//  3'h3:
       3'h4:
         SD_DMA_SRAM_DATAr[3:0] <= SD_DAT;
 //  3'h5:
 //  3'h6:
-//  3'h7:
+      3'h7:
+		  SD_DMA_SRAM_WEr <= 1'b1;
     endcase
   end
 end

verilog/sd2snes_cx4/spi.v

@@ -39,15 +39,27 @@ module spi(
 reg [7:0] cmd_data_r;
 reg [7:0] param_data_r;
 
-reg [1:0] SSELr;  always @(posedge clk) SSELr <= {SSELr[0], SSEL};
+reg [2:0] SSELr;
+reg [2:0] SSELSCKr;
+
+always @(posedge clk) SSELr <= {SSELr[1:0], SSEL};
+always @(posedge SCK) SSELSCKr <= {SSELSCKr[1:0], SSEL};
+
+wire SSEL_inactive = SSELr[1];
 wire SSEL_active = ~SSELr[1];  // SSEL is active low
-wire SSEL_startmessage = (SSELr[1:0]==2'b10);  // message starts at falling edge
-wire SSEL_endmessage = (SSELr[1:0]==2'b01);  // message stops at rising edge
+wire SSEL_startmessage = (SSELr[2:1]==2'b10);  // message starts at falling edge
+wire SSEL_endmessage = (SSELr[2:1]==2'b01);  // message stops at rising edge
 assign endmessage = SSEL_endmessage;
 assign startmessage = SSEL_startmessage;
 
 // bit count for one SPI byte + byte count for the message
 reg [2:0] bitcnt;
+initial bitcnt = 3'b000;
+wire bitcnt_msb = bitcnt[2];
+reg [2:0] bitcnt_wrap_r;
+always @(posedge clk) bitcnt_wrap_r <= {bitcnt_wrap_r[1:0], bitcnt_msb};
+wire byte_received_sync = (bitcnt_wrap_r[2:1] == 2'b10);
+
 reg [31:0] byte_cnt_r;
 
 reg byte_received;  // high when a byte has been received
@@ -56,23 +68,26 @@ reg [7:0] byte_data_received;
 assign bit_cnt = bitcnt;
 
 always @(posedge SCK) begin
-  if(SSEL) bitcnt <= 3'b000;
-  else begin
-    bitcnt <= bitcnt + 3'b001;
-    byte_data_received <= {byte_data_received[6:0], MOSI};
+  if(SSELSCKr[1]) bitcnt <= 3'b000;
+  else bitcnt <= bitcnt + 3'b001;
+end
+
+always @(posedge SCK) begin
+  if(~SSELSCKr[1]) begin
+	 byte_data_received <= {byte_data_received[6:0], MOSI};
   end
-  if(~SSEL && bitcnt==3'b111) byte_received <= 1'b1;
+  if(~SSELSCKr[1] && bitcnt==3'b111) byte_received <= 1'b1;
   else byte_received <= 1'b0;
 end
 
-reg [1:0] byte_received_r;
-always @(posedge clk) byte_received_r <= {byte_received_r[0], byte_received};
-wire byte_received_sync = (byte_received_r == 2'b01);
+//reg [2:0] byte_received_r;
+//always @(posedge clk) byte_received_r <= {byte_received_r[1:0], byte_received};
+//wire byte_received_sync = (byte_received_r[2:1] == 2'b01);
 
 always @(posedge clk) begin
-  if(~SSEL_active)
+  if(SSEL_inactive) begin
     byte_cnt_r <= 16'h0000;
-  else if(byte_received_sync) begin
+  end else if(byte_received_sync) begin
     byte_cnt_r <= byte_cnt_r + 16'h0001;
   end
 end