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SuperCIC key: improve mid-operation pair mode detect; documentation, cleanup.

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This commit is contained in:
ikari 2010-05-08 10:07:15 +02:00
parent 18d7cbbd6f
commit bc5cf05880
2 changed files with 21 additions and 20 deletions
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17
cic/supercic/supercic-key.asm
View File

@ -28,7 +28,7 @@ processor p12f629
; +5V (27,58) [16] |1 8| GND (5,36) [8]
; CIC clk (56) [6] |2 7| CIC data i/o 0 (55) [2]
; status out |3 6| CIC data i/o 1 (24) [1]
; nc |4 5| CIC slave reset (25) [7]
; /PAIR |4 5| CIC slave reset (25) [7]
; `-------'
;
;
@ -38,7 +38,7 @@ processor p12f629
; -------------------------+----------------------------
; OK or no lock CIC | high
; error | low
; SuperCIC pair mode | high-low alternating @1kHz
; SuperCIC pair mode | 148.75kHz / 50% duty cycle
;
; In case lockout fails, the region is switched automatically and
; will be used after the next reset.
@ -53,7 +53,8 @@ processor p12f629
; 0x4d buffer for eeprom access
; 0x4e loop variable for longwait
; 0x4f loop variable for wait
;
; 0x5e SuperCIC pair mode detect (phase 1)
; 0x5f SuperCIC pair mode detect (phase 2)
; ---------------------------------------------------------------------
@ -444,13 +445,13 @@ mangle_key_withskip
bcf GPIO, 0
movf GPIO, w
movwf 0x5e
btfsc GPIO, 3
btfss GPIO, 3
bsf GPIO, 0
movf GPIO, w
movwf 0x5f
bcf GPIO, 0
nop
nop
btfsc GPIO, 3
clrf 0x5e
nop
btfss 0x20, 4 ; skip if half-byte carry
goto mangle_return ; +2 cycles in return
@ -622,7 +623,7 @@ mangle_lock_withskip
goto scic_pair_skip1
btfsc 0x5f, 1
goto scic_pair_skip2
btfss GPIO, 3
btfsc GPIO, 3
goto scic_pair_skip3
goto supercic_pairmode
scic_pair_skip1
@ -696,7 +697,7 @@ die_intloop
banksel GPIO
bcf GPIO, 4
; --------forever: blink status pin--------
; --------get caught up--------
die_trap
goto die_trap
; -----------------------------------------------------------------------

24
cic/supercic/supercic-lock.asm
View File

@ -40,21 +40,21 @@ processor p16f630
; pin 9 connected to key CIC pin 1 (or clone CIC pin 6)
; pin 10 connected to key CIC pin 2 (or clone CIC pin 7)
; pin 11 connected to key CIC pin 9 (SNES /reset line)
; pin 12 connected to PPU1 pin 24 and PPU2 pin 30 (both isolated from mainboard)
; pin 12 connected to PPU1 pin 24 & PPU2 pin 30 (both isolated from mainboard)
; pin 13 connected to reset button
;
; D4 out is always switched to the autodetected region and is not user
; overridable. It can be used, by adding an address decoder and a latch,
; to override bit 4 of the $213f register (used by games to detect the
; console region).
; overridable except in SuperCIC pair mode.
; It can be used, by adding an address decoder and a latch, to override
; bit 4 of the $213f register (used by games to detect the console region).
;
; Host reset out behaves as follows:
; After powerup it is held low for a couple of ms to allow the components
; to power-up properly.
; It is then asserted a high level even if the CIC "auth" should fail at
; any point, thus enabling homebrew or other cartridges without a CIC or
; CIC clone to be run properly while maintaining compatibility with CIC
; demanding cartridges like S-DD1 or SA-1 powered ones.
; CIC clone to be run properly while maintaining compatibility with
; cartridges requiring a CIC, like S-DD1 or SA-1 games.
; The type of key CIC (411/413) is detected automatically.
;
; This implementation supports automatic 50/60Hz switching based on the
@ -80,12 +80,12 @@ processor p16f630
; immediately.
;
; SuperCIC pair mode: when a SuperCIC lock and SuperCIC key detect each other
; they both switch both of the data pins to inputs. The lock then passes through
; data i/o 0 to SNES 50/60Hz and data i/o 1 to an optional D4 output (for
; overriding the 213f register using additional hardware). This makes it
; possible to switch 50/60Hz and D4 from the cartridge slot, e.g. by connecting
; an additional MCU to the CIC data lines. Of course, they have to be tristated
; for normal (non-passthrough) operation first.
; they both switch both of the data pins to inputs. The lock then passes
; through data i/o 0 to SNES 50/60Hz and data i/o 1 to an optional D4 output
; (for overriding the 213f register using additional hardware). This makes it
; possible to switch 50/60Hz and D4 from the cartridge slot, e.g. by
; connecting an additional MCU to the CIC data lines. Of course, they have to
; be tristated for normal (non-passthrough) operation.
;
; Table 1. 50/60Hz output behavior according to user setting and key CIC type.
; SuperCIC key CIC "region"