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more time for clock to stabilize; disable reset pullup (may be bogus)

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ikari 2010-04-15 10:23:56 +02:00
parent c0b4674eff
commit ed71ef929f
1 changed files with 13 additions and 11 deletions
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24
cic/snescic-lock.asm
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@ -2,7 +2,7 @@
processor p12f629 processor p12f629
; --------------------------------------------------------------------- ; ---------------------------------------------------------------------
; SNES CIC clone for PIC Microcontroller (lock mode, auto key detect, ; SNES CIC clone for PIC Microcontroller (lock mode, auto key region detect,
; error tolerant) ; error tolerant)
; ;
; Copyright (C) 2010 by Maximilian Rehkopf (ikari_01) <otakon@gmx.net> ; Copyright (C) 2010 by Maximilian Rehkopf (ikari_01) <otakon@gmx.net>
@ -34,16 +34,18 @@ processor p12f629
; ;
; pin 3 connected to PPU2 reset in ; pin 3 connected to PPU2 reset in
; pin 4 connected to reset button ; pin 4 connected to reset button
; pin 5 connected to key CIC pin 7 (or clone CIC pin 5)
; pin 6 connected to key CIC pin 1 (or clone CIC pin 6)
; pin 7 connected to key CIC pin 2 (or clone CIC pin 7)
; ;
; ; Host reset out behaves as follows:
; host reset out behaves as follows: ; After powerup it is held low for a couple of us to properly allow the
; after powerup it is held low for a couple of us to properly allow the
; components to power-up. ; components to power-up.
; it is then asserted a high level even if the CIC "auth" should fail at ; 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 ; any point, thus enabling homebrew or other cartridges without a CIC or
; CIC clone to be run properly, while maintaining compatibility with CIC ; CIC clone to be run properly while maintaining compatibility with CIC
; demanding cartridges like S-DD1 or SA-1 powered ones. ; demanding cartridges like S-DD1 or SA-1 powered ones.
; The region of the key CIC is detected automatically. ; The type of key CIC (411/413) is detected automatically.
; ;
; memory usage: ; memory usage:
; ;
@ -97,16 +99,16 @@ init
banksel TRISIO banksel TRISIO
movlw 0x29 ; in out in OUT out in. slave reset is an output on lock movlw 0x29 ; in out in OUT out in. slave reset is an output on lock
movwf TRISIO movwf TRISIO
movlw 0x08 ; pullups for clk to avoid errors when no CIC in slave movlw 0x00 ; no pullups
movwf WPU movwf WPU
movlw 0x00 ; 0x80 for global pullup disable. movlw 0x80 ; global pullup disable
movwf OPTION_REG movwf OPTION_REG
banksel GPIO banksel GPIO
bcf GPIO, 4 ; LED off bcf GPIO, 4 ; LED off
goto rst goto rst
main main
movlw 0x2 ; wait a bit before initializing the slave + console movlw 0x40 ; wait a bit before initializing the slave + console
call longwait call longwait
bsf GPIO, 4 ; enable console bsf GPIO, 4 ; enable console
@ -241,7 +243,7 @@ main
banksel GPIO banksel GPIO
movlw 0x24 ; "wait" 1 movlw 0x24 ; "wait" 1
call wait ; wait 112 call wait ; wait 112
nop ; nop
movlw 0x1 ; 'first time' bit movlw 0x1 ; 'first time' bit
movwf 0x43 ; for key detection movwf 0x43 ; for key detection
; --------main loop-------- ; --------main loop--------