crash_bsnes.asm

crash_bsnes.asm

; asar --fix-checksum=off --no-title-check crash_bsnes.asm crash_bsnes.sfc

; causes bsnes-plus on accuracy to hang
; lags the hell out of ZSNES and Snes9X-GTK
; no$sns and others are unaffected

org $008000
e_reset:
	; fuck it, enable NMI
	lda #$80
	sta $4200
e_nmi:
	lda #$01
	xba
	lda #$ff
	tcs ; wouldn't want to cause a stack overflow now, would we?
	; fuck it, start a bunch of garbage DMA
-	stz $4305 : stz $4306
	stz $4315 : stz $4316
	stz $4325 : stz $4326
	stz $4335 : stz $4336
	stz $4345 : stz $4346
	stz $4355 : stz $4356
	stz $4365 : stz $4366
	stz $4375 : stz $4376
	sta $420b
	bra -

padbyte $02 : pad $00ffc0

org $00ffc0
	db "CRASH BSNES          "	; rom title (21 bytes, ascii)
	db $20			   		;"	; map mode: slow lorom
	db $00						; cart contents: rom only
	db $05						; rom size: 32kb (1 bank)
	db $00						; no ram
	db $01,$33,$00				; NTSC; unused; revision: 00
	dw $5555,$5555				; checksums
	dw $ffff,$ffff				; unused vectors
	dw e_reset					; native cop vector
	dw e_reset					; native brk vector
	dw e_reset					; native abort vector
	dw e_reset					; native nmi vector
	dw e_reset					; native reset vector
	dw e_reset					; native irq vector
	dw $ffff,$ffff				; unused vectors
	dw e_reset					; emulation cop vector
	dw e_reset					; emulation brk vector
	dw e_reset					; emulation abort vector
	dw e_nmi					; emulation nmi vector
	dw e_reset					; emulation reset vector
	dw e_reset					; emulation irq+brk vector

crash_bsnes.sfc