SuperCIC: documentation+cleanup
This commit is contained in:
Maximilian Rehkopf
parent
d77ba9c928
commit
7914df81c4
@ -31,30 +31,76 @@ processor p16f630
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; CIC clk (56) [7] |2 A5 A0 13| CIC lock reset in [8]
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; |3 A4 A1 12| 50/60Hz out
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; |4 A3 A2 11| host reset out [10]
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; LED out (red) |5 C5 C0 10| CIC data i/o 0 (55) [1]
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; LED out (grn) |6 C4 C1 9| CIC data i/o 1 (24) [2]
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; LED out (grn) |5 C5 C0 10| CIC data i/o 0 (55) [1]
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; LED out (red) |6 C4 C1 9| CIC data i/o 1 (24) [2]
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; |7 C3 C2 8| CIC slave reset out (25) [11]
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; `-----------'
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;
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; PORTA: in in in out out in
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; PORTC: out out in out out in
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;
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; pin 11 connected to PPU2 reset in
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; pin 13 connected to reset button
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; pin 8 connected to key CIC pin 7 (or clone CIC pin 5)
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; pin 9 connected to key CIC pin 1 (or clone CIC pin 6)
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; pin 10 connected to key CIC pin 2 (or clone CIC pin 7)
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; pin 11 connected to key CIC pin 9 (SNES /reset line)
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; pin 12 connected to PPU1 pin 24 and PPU2 pin 30 (both isolated from mainboard)
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; pin 13 connected to reset button
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;
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; Host reset out behaves as follows:
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; After powerup it is held low for a couple of us to properly allow the
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; components to power-up.
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; After powerup it is held low for a couple of ms to allow the components
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; to power-up properly.
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; It is then asserted a high level even if the CIC "auth" should fail at
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; any point, thus enabling homebrew or other cartridges without a CIC or
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; CIC clone to be run properly while maintaining compatibility with CIC
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; demanding cartridges like S-DD1 or SA-1 powered ones.
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; The type of key CIC (411/413) is detected automatically.
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;
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; memory usage:
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; This implementation supports automatic 50/60Hz switching based on the
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; detected key CIC in the game cartridge. Also the 50/60Hz setting can be
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; overridden by the user via the reset button.
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;
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; Reset / Mode switch behaves as follows:
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; Reset is pressed for < 586ms -> reset console upon release
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; Reset is pressed for >= 586ms -> enter mode switch cycle, no reset
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; Modes are cycled every 586ms as shown in Fig.1 as long as the reset button
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; is held down.
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; The currently selected mode is indicated by the color of the power LED
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; (see Table 2).
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; The mode is finally selected by releasing the reset button while the
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; desired LED color is shown. The selected mode will then become effective
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; and will be saved to EEPROM. Mode switching does not reset the console.
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;
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; Note that in case a valid CIC is detected in the game cartridge, video mode
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; will be forced to its corresponding region for the first ~9 seconds after
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; reset or powerup. This is an attempt to trick the region detection on most
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; games. See Table 1.
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; In case no CIC is present in the game cartridge the user setting is applied
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; immediately.
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;
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; Table 1. 50/60Hz output behavior according to user setting and key CIC type.
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; SuperCIC key CIC "region"
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; ------------------------------------------------------
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; 60Hz D/F413 50Hz for ~9 sec, then 60Hz
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; 60Hz D/F411 60Hz permanent
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; 60Hz none 60Hz permanent
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;
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; 50Hz D/F413 50Hz permanent
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; 50Hz D/F411 60Hz for ~9 sec, then 50Hz
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; 50Hz none 50Hz permanent
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;
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; Auto D/F413 50Hz permanent
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; Auto D/F411 60Hz permanent
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; Auto none 60Hz permanent
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;
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; Fig.1. SuperCIC mode cycle.
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; ,->60Hz--->50Hz--->Auto->.
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; `-------<--------<-------'
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;
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; Table 2. LED color according to user setting.
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; mode LED color
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; ---------------------
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; 60Hz red
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; 50Hz green
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; Auto orange
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;
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; Table 3. memory usage.
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; -------------------basic CIC functions--------------------
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; 0x20 buffer for seed calc and transfer
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; 0x21 - 0x2f seed area (lock seed)
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@ -67,7 +113,6 @@ processor p16f630
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; 0x4d buffer for eeprom access
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; 0x4e loop variable for longwait
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; 0x4f loop variable for wait
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;
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; -------------------SuperCIC extensions--------------------
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; 0x50 power LED state (no bits except 4 and 5 must be set!!)
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; 0x51 last reset button state
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@ -93,40 +138,39 @@ processor p16f630
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nop
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goto init
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trap
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org 0x0004
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movlw 0x3
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xorwf PORTC, f
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goto trap
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rst ; we jump here after powerup or RC0=1
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bcf PORTC, 0 ; clear stream i/o
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bcf PORTC, 1 ; clear stream i/o
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bcf PORTC, 2 ; disable slave reset
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bcf PORTA, 2 ; hold the SNES in reset
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movlw 0x30 ; prescaler 1:8
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movwf T1CON ;
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bcf PORTC, 0 ; clear stream i/o
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bcf PORTC, 1 ; clear stream i/o
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bcf PORTC, 2 ; disable slave reset
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bcf PORTA, 2 ; hold the SNES in reset
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movlw 0x30 ; prescaler 1:8
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movwf T1CON ;
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clrf PIR1
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rst_loop
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btfsc PORTA, 0 ; stay in "reset" as long as RA0=1
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btfsc PORTA, 0 ; stay in "reset" as long as RA0=1
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goto rst_loop
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clrf 0x44 ; clear dir buffer
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clrf 0x51 ; clear reset button state
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clrf 0x52 ; clear modechange flag
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clrf 0x44 ; clear dir buffer
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clrf 0x51 ; clear reset button state
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clrf 0x52 ; clear modechange flag
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clrf 0x53
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clrf 0x54 ; clear user mode
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clrf 0x57 ; clear key mode
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banksel EEADR ; fetch current mode from EEPROM
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clrf EEADR ; address 0
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bsf EECON1, RD ;
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movf EEDAT, w ;
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clrf 0x54 ; clear user mode
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clrf 0x57 ; clear key mode
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banksel EEADR ; fetch current mode from EEPROM
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clrf EEADR ; address 0
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bsf EECON1, RD ;
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movf EEDAT, w ;
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banksel PORTA
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movwf 0x55 ; store saved mode in mode var
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movwf 0x56 ; and temp LED
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movwf 0x55 ; store saved mode in mode var
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movwf 0x56 ; and temp LED
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movwf 0x58
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movwf 0x50 ; and final LED
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movlw 0x3 ; mask
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andwf 0x50, f ;
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swapf 0x50, f ; and nibbleswap for actual output
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movwf 0x50 ; and final LED
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movlw 0x3 ; mask
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andwf 0x50, f ;
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swapf 0x50, f ; and nibbleswap for actual output
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movlw 0x2
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andwf 0x58, f
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@ -135,34 +179,36 @@ rst_loop
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clrf TMR1L ; reset counter
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clrf TMR1H
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bsf T1CON, 0 ; start the timer
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goto main ; go go go
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goto main ; go go go
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init
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; PORTA: in in in out out in
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; PORTC: out out in out out in
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banksel PORTA
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clrf PORTA
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movlw 0x07 ; GPIO2..0 are digital I/O (not connected to comparator)
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movlw 0x07 ; GPIO2..0 are digital I/O (not connected to comparator)
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movwf CMCON
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movlw 0x00 ; disable all interrupts
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movlw 0x00 ; disable all interrupts
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movwf INTCON
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banksel TRISA
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movlw 0x39 ; in in in out out in
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movlw 0x39 ; in in in out out in
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movwf TRISA
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movlw 0x09 ; out out in out out in
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movlw 0x09 ; out out in out out in
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movwf TRISC
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movlw 0x00 ; no pullups
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movlw 0x00 ; no pullups
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movwf WPUA
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movlw 0x80 ; global pullup disable
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movlw 0x80 ; global pullup disable
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movwf OPTION_REG
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banksel PORTA
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bcf PORTA, 2 ; hold SNES in reset
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goto rst
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main
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movlw 0x40 ; wait a bit before initializing the slave + console
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movlw 0x40 ; wait a bit before initializing the slave + console
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call longwait
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nop
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bsf PORTC, 2 ; trigger the slave
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bsf PORTC, 2 ; trigger the slave
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nop
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nop
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bcf PORTC, 2
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@ -204,9 +250,9 @@ main
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movwf 0x2f
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; --------INIT KEY SEED (what the key sends)--------
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movlw 0xf ; we always request the same stream for simplicity
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movlw 0xf ; we always request the same stream for simplicity
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movwf 0x31
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movlw 0x0 ; this is filled in by key autodetect
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movlw 0x0 ; this is filled in by key autodetect
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movwf 0x32
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movlw 0xa
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movwf 0x33
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@ -239,107 +285,96 @@ main
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call wait
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; --------lock sends stream ID. 15 cycles per bit--------
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; bsf GPIO, 0 ; (debug marker)
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; bcf GPIO, 0 ;
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btfsc 0x31, 3 ; read stream select bit
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bsf PORTC, 0 ; send bit
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nop
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nop
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bcf PORTC, 0
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movlw 0x1 ; wait=7
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call wait ; burn 10 cycles
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nop
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nop
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; bsf GPIO, 0
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; bcf GPIO, 0
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btfsc 0x31, 0 ; read stream select bit
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bsf PORTC, 0 ; send bit
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nop
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nop
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bcf PORTC, 0
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movlw 0x1 ; wait=3*W+5
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call wait ; burn 11 cycles
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nop
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nop
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; bsf GPIO, 0
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; bcf GPIO, 0
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btfsc 0x31, 1 ; read stream select bit
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bsf PORTC, 0 ; send bit
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nop
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nop
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bcf PORTC, 0
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movlw 0x1 ; wait=3*W+5
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call wait ; burn 11 cycles
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nop
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nop
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; bsf GPIO, 0
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; bcf GPIO, 0
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btfsc 0x31, 2 ; read stream select bit
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bsf PORTC, 0 ; send bit
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bsf PORTC, 0 ; send bit
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nop
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nop
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bcf PORTC, 0
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movlw 0x1 ; wait=3*0+7
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call wait ; burn 10 cycles
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call wait ; burn 10 cycles in total
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nop
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nop
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btfsc 0x31, 0 ; read stream select bit
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bsf PORTC, 0 ; send bit
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nop
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nop
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bcf PORTC, 0
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movlw 0x1 ; wait=3*0+7
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call wait ; burn 10 cycles in total
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nop
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nop
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btfsc 0x31, 1 ; read stream select bit
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bsf PORTC, 0 ; send bit
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nop
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nop
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bcf PORTC, 0
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movlw 0x1 ; wait=3*0+7
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call wait ; burn 10 cycles in total
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nop
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nop
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btfsc 0x31, 2 ; read stream select bit
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bsf PORTC, 0 ; send bit
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nop
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nop
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bcf PORTC, 0
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movlw 0x1 ; wait=3*0+7
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call wait ; burn 10 cycles in total
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banksel TRISC
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bsf TRISC, 0
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bcf TRISC, 1
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banksel PORTC
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movlw 0x23 ;
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call wait ; wait 109
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; nop
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movlw 0x1 ; 'first time' bit
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movwf 0x43 ; for key detection
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; --------main loop--------
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loop
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movlw 0x1
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loop0
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addlw 0x20 ; lock stream
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movwf FSR ; store in index reg
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addlw 0x20 ; lock stream
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movwf FSR ; store in index reg
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loop1
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movf INDF, w ; load seed value
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movf INDF, w ; load seed value
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movwf 0x20
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bcf 0x20, 1 ; clear bit 1
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btfsc 0x20, 0 ; copy from bit 0
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bsf 0x20, 1 ; (if set)
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movf 0x50, w ; get LED state
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iorwf 0x20, f ; combine with data i/o
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bcf 0x20, 1 ; clear bit 1
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btfsc 0x20, 0 ; copy from bit 0
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bsf 0x20, 1 ; (if set)
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movf 0x50, w ; get LED state
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iorwf 0x20, f ; combine with data i/o
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movf 0x20, w
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andlw 0x33 ; mask out anything unwanted
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andlw 0x33 ; mask out anything unwanted
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movwf PORTC
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nop
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movf PORTC, w ; read input
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movwf 0x42 ; store input
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movf 0x50, w ; get LED state
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movwf PORTC ; reset GPIO
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movf PORTC, w ; read input
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movwf 0x42 ; store input
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movf 0x50, w ; get LED state
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movwf PORTC ; reset GPIO
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nop
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call checkkey
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btfsc 0x44, 0 ; check "direction"
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rrf 0x42, f ; shift received bit into place
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bsf FSR, 4 ; goto other stream
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movf INDF, w ; read
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xorwf 0x42, f ; xor received + calculated
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bcf FSR, 4 ; back to our own stream
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btfsc 0x42, 0 ; equal? then continue
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bsf 0x43, 1 ; else mark key invalid
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btfsc 0x43, 1 ; if key invalid:
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bcf 0x57, 1 ; set det.region=60Hz
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; btfsc 0x43, 1 ; if key invalid:
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; bcf 0x54, 1 ; set init.region=60Hz
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btfsc 0x43, 1 ; if key invalid:
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bsf 0x53, 4 ; simulate region timeout
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btfsc 0x44, 0 ; check "direction"
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rrf 0x42, f ; shift received bit into place
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bsf FSR, 4 ; goto other stream
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movf INDF, w ; read
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xorwf 0x42, f ; xor received + calculated
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bcf FSR, 4 ; back to our own stream
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btfsc 0x42, 0 ; equal? then continue
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bsf 0x43, 1 ; else mark key invalid
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btfsc 0x43, 1 ; if key invalid:
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bcf 0x57, 1 ; set det.region=60Hz
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btfsc 0x43, 1 ; if key invalid:
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bsf 0x53, 4 ; simulate region timeout->immediate region chg
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nop
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nop
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nop
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nop
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call checkrst
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incf FSR, f ; next one
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incf FSR, f ; next one
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movlw 0xf
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andwf FSR, w
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btfss STATUS, Z
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@ -397,69 +432,69 @@ mangle_key_loop
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incf 0x22, f
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comf 0x22, f
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movf 0x23, w
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movwf 0x41 ; store 23 to 41
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movwf 0x41 ; store 23 to 41
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movlw 0xf
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andwf 0x23, f
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movf 0x40, w ; add 40(22 old)+23+#1 and skip if carry
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movf 0x40, w ; add 40(22 old)+23+#1 and skip if carry
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andlw 0xf
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addwf 0x23, f
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incf 0x23, f
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btfsc 0x23, 4
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goto mangle_key_withskip
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mangle_key_withoutskip
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movf 0x41, w ; restore 23
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addwf 0x24, f ; add to 24
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movf 0x41, w ; restore 23
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addwf 0x24, f ; add to 24
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movf 0x25, w
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movwf 0x40 ; save 25 to 40
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movwf 0x40 ; save 25 to 40
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movf 0x24, w
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addwf 0x25, f
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movf 0x26, w
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movwf 0x41 ; save 26 to 41
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movf 0x40, w ; restore 25
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andlw 0xf ; mask nibble
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addlw 0x8 ; add #8 to HIGH nibble
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movwf 0x41 ; save 26 to 41
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movf 0x40, w ; restore 25
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andlw 0xf ; mask nibble
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addlw 0x8 ; add #8 to HIGH nibble
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movwf 0x40
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btfss 0x40, 4 ; skip if carry to 5th bit
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btfss 0x40, 4 ; skip if carry to 5th bit
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addwf 0x26, w
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movwf 0x26
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movf 0x41, w ; restore 26
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addlw 0x1 ; inc
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addwf 0x27, f ; add to 27
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movf 0x41, w ; restore 26
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addlw 0x1 ; inc
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addwf 0x27, f ; add to 27
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movf 0x27, w ;
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addlw 0x1 ; inc
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addwf 0x28, f ; add to 28
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movf 0x27, w ;
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addlw 0x1 ; inc
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addwf 0x28, f ; add to 28
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movf 0x28, w ;
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addlw 0x1 ; inc
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addwf 0x29, f ; add to 29
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movf 0x28, w ;
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addlw 0x1 ; inc
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addwf 0x29, f ; add to 29
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movf 0x29, w ;
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addlw 0x1 ; inc
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addwf 0x2a, f ; add to 2a
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movf 0x29, w ;
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addlw 0x1 ; inc
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addwf 0x2a, f ; add to 2a
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movf 0x2a, w ;
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addlw 0x1 ; inc
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addwf 0x2b, f ; add to 2b
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movf 0x2a, w ;
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addlw 0x1 ; inc
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addwf 0x2b, f ; add to 2b
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movf 0x2b, w ;
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addlw 0x1 ; inc
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addwf 0x2c, f ; add to 2c
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movf 0x2b, w ;
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addlw 0x1 ; inc
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addwf 0x2c, f ; add to 2c
|
||||
|
||||
movf 0x2c, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2d, f ; add to 2d
|
||||
movf 0x2c, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2d, f ; add to 2d
|
||||
|
||||
movf 0x2d, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2e, f ; add to 2e
|
||||
movf 0x2d, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2e, f ; add to 2e
|
||||
|
||||
movf 0x2e, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2f, f ; add to 2f
|
||||
movf 0x2e, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2f, f ; add to 2f
|
||||
|
||||
movf 0x20, w ; restore original 0xf
|
||||
movf 0x20, w ; restore original 0xf
|
||||
andlw 0xf
|
||||
addlw 0xf
|
||||
movwf 0x20
|
||||
@ -472,71 +507,71 @@ mangle_key_withoutskip
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
btfss 0x20, 4 ; skip if half-byte carry
|
||||
goto mangle_return ; +2 cycles in return
|
||||
btfss 0x20, 4 ; skip if half-byte carry
|
||||
goto mangle_return ; +2 cycles in return
|
||||
nop
|
||||
goto mangle_key_loop
|
||||
; 69 when goto, 69 when return
|
||||
; CIC has 78 -> 9 nops
|
||||
|
||||
mangle_key_withskip
|
||||
movf 0x41, w ; restore 23
|
||||
addwf 0x23, f ; add to 23
|
||||
movf 0x41, w ; restore 23
|
||||
addwf 0x23, f ; add to 23
|
||||
movf 0x24, w
|
||||
movwf 0x40 ; save 24 to 40
|
||||
movwf 0x40 ; save 24 to 40
|
||||
movf 0x23, w
|
||||
addwf 0x24, f
|
||||
movf 0x25, w
|
||||
movwf 0x41 ; save 25 to 41
|
||||
movf 0x40, w ; restore 24
|
||||
andlw 0xf ; mask nibble
|
||||
addlw 0x8 ; add #8 to HIGH nibble
|
||||
movwf 0x41 ; save 25 to 41
|
||||
movf 0x40, w ; restore 24
|
||||
andlw 0xf ; mask nibble
|
||||
addlw 0x8 ; add #8 to HIGH nibble
|
||||
movwf 0x40
|
||||
btfss 0x40, 4 ; skip if carry to 5th bit
|
||||
btfss 0x40, 4 ; skip if carry to 5th bit
|
||||
addwf 0x25, w
|
||||
movwf 0x25
|
||||
|
||||
movf 0x41, w ; restore 25
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x26, f ; add to 26
|
||||
movf 0x41, w ; restore 25
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x26, f ; add to 26
|
||||
|
||||
movf 0x26, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x27, f ; add to 27
|
||||
movf 0x26, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x27, f ; add to 27
|
||||
|
||||
movf 0x27, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x28, f ; add to 28
|
||||
movf 0x27, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x28, f ; add to 28
|
||||
|
||||
movf 0x28, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x29, f ; add to 29
|
||||
movf 0x28, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x29, f ; add to 29
|
||||
|
||||
movf 0x29, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2a, f ; add to 2a
|
||||
movf 0x29, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2a, f ; add to 2a
|
||||
|
||||
movf 0x2a, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2b, f ; add to 2b
|
||||
movf 0x2a, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2b, f ; add to 2b
|
||||
|
||||
movf 0x2b, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2c, f ; add to 2c
|
||||
movf 0x2b, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2c, f ; add to 2c
|
||||
|
||||
movf 0x2c, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2d, f ; add to 2d
|
||||
movf 0x2c, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2d, f ; add to 2d
|
||||
|
||||
movf 0x2d, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2e, f ; add to 2e
|
||||
movf 0x2d, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2e, f ; add to 2e
|
||||
|
||||
movf 0x2e, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2f, f ; add to 2f
|
||||
movf 0x2e, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x2f, f ; add to 2f
|
||||
|
||||
movf 0x20, w ; restore original 0xf
|
||||
movf 0x20, w ; restore original 0xf
|
||||
andlw 0xf
|
||||
addlw 0xf
|
||||
movwf 0x20
|
||||
@ -551,8 +586,8 @@ mangle_key_withskip
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
btfss 0x20, 4 ; skip if half-byte carry
|
||||
goto mangle_return ; +2 cycles in return
|
||||
btfss 0x20, 4 ; skip if half-byte carry
|
||||
goto mangle_return ; +2 cycles in return
|
||||
nop
|
||||
goto mangle_key_loop
|
||||
mangle_return
|
||||
@ -573,69 +608,69 @@ mangle_lock_loop
|
||||
incf 0x32, f
|
||||
comf 0x32, f
|
||||
movf 0x33, w
|
||||
movwf 0x41 ; store 33 to 41
|
||||
movwf 0x41 ; store 33 to 41
|
||||
movlw 0xf
|
||||
andwf 0x33, f
|
||||
movf 0x40, w ; add 40(32 old)+33+#1 and skip if carry
|
||||
movf 0x40, w ; add 40(32 old)+33+#1 and skip if carry
|
||||
andlw 0xf
|
||||
addwf 0x33, f
|
||||
incf 0x33, f
|
||||
btfsc 0x33, 4
|
||||
goto mangle_lock_withskip
|
||||
mangle_lock_withoutskip
|
||||
movf 0x41, w ; restore 33
|
||||
addwf 0x34, f ; add to 34
|
||||
movf 0x41, w ; restore 33
|
||||
addwf 0x34, f ; add to 34
|
||||
movf 0x35, w
|
||||
movwf 0x40 ; save 35 to 40
|
||||
movwf 0x40 ; save 35 to 40
|
||||
movf 0x34, w
|
||||
addwf 0x35, f
|
||||
movf 0x36, w
|
||||
movwf 0x41 ; save 36 to 41
|
||||
movf 0x40, w ; restore 35
|
||||
andlw 0xf ; mask nibble
|
||||
addlw 0x8 ; add #8 to HIGH nibble
|
||||
movwf 0x41 ; save 36 to 41
|
||||
movf 0x40, w ; restore 35
|
||||
andlw 0xf ; mask nibble
|
||||
addlw 0x8 ; add #8 to HIGH nibble
|
||||
movwf 0x40
|
||||
btfss 0x40, 4 ; skip if carry to 5th bit
|
||||
btfss 0x40, 4 ; skip if carry to 5th bit
|
||||
addwf 0x36, w
|
||||
movwf 0x36
|
||||
|
||||
movf 0x41, w ; restore 36
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x37, f ; add to 37
|
||||
movf 0x41, w ; restore 36
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x37, f ; add to 37
|
||||
|
||||
movf 0x37, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x38, f ; add to 38
|
||||
movf 0x37, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x38, f ; add to 38
|
||||
|
||||
movf 0x38, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x39, f ; add to 39
|
||||
movf 0x38, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x39, f ; add to 39
|
||||
|
||||
movf 0x39, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3a, f ; add to 3a
|
||||
movf 0x39, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3a, f ; add to 3a
|
||||
|
||||
movf 0x3a, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3b, f ; add to 3b
|
||||
movf 0x3a, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3b, f ; add to 3b
|
||||
|
||||
movf 0x3b, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3c, f ; add to 3c
|
||||
movf 0x3b, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3c, f ; add to 3c
|
||||
|
||||
movf 0x3c, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3d, f ; add to 3d
|
||||
movf 0x3c, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3d, f ; add to 3d
|
||||
|
||||
movf 0x3d, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3e, f ; add to 3e
|
||||
movf 0x3d, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3e, f ; add to 3e
|
||||
|
||||
movf 0x3e, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3f, f ; add to 3f
|
||||
movf 0x3e, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3f, f ; add to 3f
|
||||
|
||||
movf 0x30, w ; restore original 0xf
|
||||
movf 0x30, w ; restore original 0xf
|
||||
andlw 0xf
|
||||
addlw 0xf
|
||||
movwf 0x30
|
||||
@ -648,7 +683,7 @@ mangle_lock_withoutskip
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
btfss 0x30, 4 ; skip if half-byte carry
|
||||
btfss 0x30, 4 ; skip if half-byte carry
|
||||
goto mangle_return
|
||||
nop
|
||||
goto mangle_lock_loop
|
||||
@ -656,63 +691,63 @@ mangle_lock_withoutskip
|
||||
; CIC has 78 -> 9 nops
|
||||
|
||||
mangle_lock_withskip
|
||||
movf 0x41, w ; restore 33
|
||||
addwf 0x33, f ; add to 33
|
||||
movf 0x41, w ; restore 33
|
||||
addwf 0x33, f ; add to 33
|
||||
movf 0x34, w
|
||||
movwf 0x40 ; save 34 to 40
|
||||
movwf 0x40 ; save 34 to 40
|
||||
movf 0x33, w
|
||||
addwf 0x34, f
|
||||
movf 0x35, w
|
||||
movwf 0x41 ; save 35 to 41
|
||||
movf 0x40, w ; restore 34
|
||||
andlw 0xf ; mask nibble
|
||||
addlw 0x8 ; add #8 to HIGH nibble
|
||||
movwf 0x41 ; save 35 to 41
|
||||
movf 0x40, w ; restore 34
|
||||
andlw 0xf ; mask nibble
|
||||
addlw 0x8 ; add #8 to HIGH nibble
|
||||
movwf 0x40
|
||||
btfss 0x40, 4 ; skip if carry to 5th bit
|
||||
btfss 0x40, 4 ; skip if carry to 5th bit
|
||||
addwf 0x35, w
|
||||
movwf 0x35
|
||||
|
||||
movf 0x41, w ; restore 35
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x36, f ; add to 36
|
||||
movf 0x41, w ; restore 35
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x36, f ; add to 36
|
||||
|
||||
movf 0x36, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x37, f ; add to 37
|
||||
movf 0x36, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x37, f ; add to 37
|
||||
|
||||
movf 0x37, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x38, f ; add to 38
|
||||
movf 0x37, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x38, f ; add to 38
|
||||
|
||||
movf 0x38, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x39, f ; add to 39
|
||||
movf 0x38, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x39, f ; add to 39
|
||||
|
||||
movf 0x39, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3a, f ; add to 3a
|
||||
movf 0x39, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3a, f ; add to 3a
|
||||
|
||||
movf 0x3a, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3b, f ; add to 3b
|
||||
movf 0x3a, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3b, f ; add to 3b
|
||||
|
||||
movf 0x3b, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3c, f ; add to 3c
|
||||
movf 0x3b, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3c, f ; add to 3c
|
||||
|
||||
movf 0x3c, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3d, f ; add to 3d
|
||||
movf 0x3c, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3d, f ; add to 3d
|
||||
|
||||
movf 0x3d, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3e, f ; add to 3e
|
||||
movf 0x3d, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3e, f ; add to 3e
|
||||
|
||||
movf 0x3e, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3f, f ; add to 3f
|
||||
movf 0x3e, w ;
|
||||
addlw 0x1 ; inc
|
||||
addwf 0x3f, f ; add to 3f
|
||||
|
||||
movf 0x30, w ; restore original 0xf
|
||||
movf 0x30, w ; restore original 0xf
|
||||
andlw 0xf
|
||||
addlw 0xf
|
||||
movwf 0x30
|
||||
@ -727,7 +762,7 @@ mangle_lock_withskip
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
btfss 0x30, 4 ; skip if half-byte carry
|
||||
btfss 0x30, 4 ; skip if half-byte carry
|
||||
goto mangle_return
|
||||
nop
|
||||
goto mangle_lock_loop
|
||||
@ -760,24 +795,24 @@ die
|
||||
; --------check the key input and change "region" when appropriate--------
|
||||
; --------requires 19 cycles (incl. call+return)
|
||||
checkkey
|
||||
btfss 0x43, 0 ; first time?
|
||||
goto checkkey_nocheck ; if not, just burn some cycles
|
||||
movlw 0x22 ; are we at the correct stream offset?
|
||||
btfss 0x43, 0 ; first time?
|
||||
goto checkkey_nocheck; if not, just burn some cycles
|
||||
movlw 0x22 ; are we at the correct stream offset?
|
||||
xorwf FSR, w
|
||||
btfss STATUS, Z ; if not equal:
|
||||
goto checkkey_nocheck2 ; burn some cycles less.
|
||||
; if equal do the check
|
||||
btfss 0x42, 0 ; if value from slave is set it's a 411
|
||||
btfss STATUS, Z ; if not equal:
|
||||
goto checkkey_nocheck2; burn some cycles less.
|
||||
; if equal do the check
|
||||
btfss 0x42, 0 ; if value from slave is set it's a 411
|
||||
goto checkkey_413
|
||||
checkkey_411
|
||||
nop ; to compensate for untaken branch
|
||||
bcf 0x57, 1 ; set detected mode (60Hz)
|
||||
bcf 0x54, 1 ; set output mode (60Hz)
|
||||
nop ; to compensate for untaken branch
|
||||
bcf 0x57, 1 ; set detected mode (60Hz)
|
||||
bcf 0x54, 1 ; set output mode (60Hz)
|
||||
movlw 0x9
|
||||
goto checkkey_save
|
||||
checkkey_413
|
||||
bsf 0x57, 1 ; set detected mode (50Hz)
|
||||
bsf 0x54, 1 ; set output mode (50Hz)
|
||||
bsf 0x57, 1 ; set detected mode (50Hz)
|
||||
bsf 0x54, 1 ; set output mode (50Hz)
|
||||
movlw 0x6
|
||||
goto checkkey_save
|
||||
|
||||
@ -814,12 +849,12 @@ checkrst_1_0 ; 26
|
||||
; if modechange flag is set: clear modechange flag, set mode, save, restart timer
|
||||
; else reset
|
||||
btfss 0x52, 0
|
||||
goto rst ; modechange flag is not set, reset. timing is irrelevant
|
||||
clrf 0x52 ; clear modechange flag
|
||||
movf 0x56, w ; get temp mode
|
||||
movwf 0x55 ; set final mode
|
||||
movwf 0x58 ; set forced mode
|
||||
banksel EEADR ; save to EEPROM. this somehow takes 2 extra cycles!!!
|
||||
goto rst ; modechange flag is not set, reset. timing is irrelevant
|
||||
clrf 0x52 ; clear modechange flag
|
||||
movf 0x56, w ; get temp mode
|
||||
movwf 0x55 ; set final mode
|
||||
movwf 0x58 ; set forced mode
|
||||
banksel EEADR ; save to EEPROM. note: banksels take two cycles each!
|
||||
movwf EEDAT
|
||||
bsf EECON1,WREN
|
||||
movlw 0x55
|
||||
@ -827,9 +862,9 @@ checkrst_1_0 ; 26
|
||||
movlw 0xaa
|
||||
movwf EECON2
|
||||
bsf EECON1, WR
|
||||
banksel PORTA
|
||||
banksel PORTA ; two cycles again
|
||||
movlw 0x2
|
||||
andwf 0x58, f
|
||||
andwf 0x58, f ; cleanup forced mode
|
||||
bcf T1CON, 0 ; stop the timer
|
||||
clrf PIR1 ; reset overflow bit
|
||||
clrf TMR1L ; reset counter
|
||||
@ -877,34 +912,34 @@ checkrst_0_0 ; 24
|
||||
nop
|
||||
nop
|
||||
; count some overflows, change region from detected to forced unless auto
|
||||
btfsc 0x53, 4 ; past delay?
|
||||
goto checkrst_0_0_setregion_plus5 ; 3
|
||||
btfsc 0x53, 4 ; past delay?
|
||||
goto checkrst_0_0_setregion_plus5
|
||||
btfss PIR1, 0
|
||||
goto checkrst_end_plus13 ; 5
|
||||
goto checkrst_end_plus13
|
||||
clrf PIR1
|
||||
incf 0x53, f ; increment overflow counter
|
||||
btfss 0x53, 4 ; 0x10 reached?
|
||||
goto checkrst_end_plus9 ; 9
|
||||
checkrst_0_0_setregion ; 10
|
||||
incf 0x53, f ; increment overflow counter
|
||||
btfss 0x53, 4 ; 0x10 reached?
|
||||
goto checkrst_end_plus9
|
||||
checkrst_0_0_setregion
|
||||
movlw 0x3
|
||||
xorwf 0x55, w ; mode=auto?
|
||||
xorwf 0x55, w ; mode=auto?
|
||||
btfss STATUS, Z
|
||||
goto checkrst_0_0_setregion_forced
|
||||
checkrst_0_0_setregion_auto
|
||||
movf 0x57, w ; get detected region
|
||||
movf 0x57, w ; get detected region
|
||||
goto checkrst_0_0_setregion_save
|
||||
checkrst_0_0_setregion_forced
|
||||
movf 0x58, w ; get forced region
|
||||
movf 0x58, w ; get forced region
|
||||
nop
|
||||
checkrst_0_0_setregion_save
|
||||
movwf 0x54 ; set to output
|
||||
movwf 0x54 ; set to output
|
||||
goto checkrst_end
|
||||
|
||||
checkrst_0_1 ; 24
|
||||
; reset + start TMR, reset TMR overflow
|
||||
clrf TMR1L ; reset timer register
|
||||
clrf TMR1L ; reset timer register
|
||||
clrf TMR1H
|
||||
clrf PIR1 ; clear overflow bit
|
||||
clrf PIR1 ; clear overflow bit
|
||||
bsf T1CON, 0
|
||||
goto checkrst_end_plus18
|
||||
|
||||
@ -933,7 +968,7 @@ checkrst_end_plus9
|
||||
nop
|
||||
goto checkrst_end
|
||||
|
||||
checkrst_0_0_setregion_plus5 ; 5
|
||||
checkrst_0_0_setregion_plus5
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
@ -944,6 +979,6 @@ checktmr ; TODO
|
||||
; -----------------------------------------------------------------------
|
||||
; eeprom data
|
||||
DEEPROM CODE
|
||||
de 0x01 ;current mode (default: 60Hz)
|
||||
de 0x01 ;current mode (default: 60Hz)
|
||||
end
|
||||
; ------------------------------------------------------------------------
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user