Adding test ROMs.

MMC1_A12/MMC1.asm

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+;MMC1 write handler
+.define R0 $9fff
+.define R1 $bfff
+.define R2 $dfff
+.define R3 $f000
+
+.section "MMC1" FREE
+WriteR0
+	sta R0
+	lsr A
+	sta R0
+	lsr A
+	sta R0
+	lsr A
+	sta R0
+	lsr A
+	sta R0
+	rts
+
+WriteR1
+	sta R1
+	lsr A
+	sta R1
+	lsr A
+	sta R1
+	lsr A
+	sta R1
+	lsr A
+	sta R1
+	rts
+
+WriteR2
+	sta R2
+	lsr A
+	sta R2
+	lsr A
+	sta R2
+	lsr A
+	sta R2
+	lsr A
+	sta R2
+	rts
+
+ProgramSwitch1
+	sta BankLatch1
+ProgramSwitch2
+	sta BankLatch2
+WriteR3
+	tax
+	lda M2000
+	and #$7f
+	sta $2000
+	txa
+	sta R3
+	lsr A
+	sta R3
+	lsr A
+	sta R3
+	lsr A
+	sta R3
+	lsr A
+	sta R3
+	lda M2000
+	sta $2000
+	rts
+.ends

MMC1_A12/joypad.asm

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+;Joypad handling
+
+.section "ReadnLockPads" FREE
+ReadLockJoypad
+	jsr ReadJoypad
+	ldx #$01
+-	lda Pad1,X
+	tay
+	eor Pad1Locked,X	;This detects the key who had a '0' to '1' transition
+	and Pad1,X
+	sta Pad1,X
+	sty Pad1Locked,X
+	dex
+	bpl -
+	rts
+.ends
+
+.section "ReadLockPadsDPCM" FREE	;To be used when the DPCM may occasionally glitch the reads
+ReadLockJoypadDPCM
+	jsr ReadJoypad
+-	ldx Pad1
+	ldy Pad2		;Read until 2 consecutive reads returns the same data
+	jsr ReadJoypad
+	cpx Pad1
+	bne -
+	cpy Pad2
+	bne -
+
+	ldx #$01
+-	lda Pad1,X
+	tay
+	eor Pad1Locked,X	;This detects the key who had a '0' to '1' transition
+	and Pad1,X
+	sta Pad1,X
+	sty Pad1Locked,X
+	dex
+	bpl -
+	rts
+.ends
+
+.section "ReadPad" FREE
+;Do read the hardware joypads ports
+;Exit with JoyData=Joypad value
+;X and Y unchanged
+
+ReadJoypad
+	lda #$01
+	sta $4016			;Be sure to reset the shift counters
+	sta Pad1
+	sta Pad2
+	lsr A				;Simple trick to get a 0, heh
+	sta $4016
+
+-	lda $4016			;Read the value of JoyPad 1
+	lsr A
+	bcs +
+	lsr A
++	rol Pad1
+	bcc -				;Carry will be set when all 8 keys are read
+
+-	lda $4017			;Read the value of JoyPad 1
+	lsr A
+	bcs +
+	lsr A
++	rol Pad2
+	bcc -				;Carry will be set when all 8 keys are read
+	rts
+.ends

MMC1_A12/linkfile.txt

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+[objects]
+mmc1_a12.o
+
+[libraries]
+BANK 7 SLOT 3 mmc1.lib
+BANK 7 SLOT 3 joypad.lib
+
+[header]
+snrom.bin

MMC1_A12/maping.asm

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+;Defines NES's RAM for any games witout SRAM
+;Stack isn't defined, it's use is reserved
+;Also $200-$2ff is reserved for SpriteRam and isn't defined here
+
+.memorymap
+defaultslot 0
+slotsize $100
+slot 0 $0	;0 page RAM
+slotsize $500
+slot 1 $300	;BSS RAM
+slotsize $4000		;PRG ROM slot (16kb)
+slot 2 $8000
+slotsize $4000
+slot 3 $c000		;Resitant PRG slot (16kb)
+.endme
+
+;Define a CNROM structure with 32kb PRG and 32kb CHR
+
+.rombankmap
+bankstotal 8
+banksize $4000		;4x 32kb PRG
+banks 8
+.endro