20 lines
899 B
NASM
20 lines
899 B
NASM
.segment "HEADER" ; Don’t forget to always add the iNES header to your ROM files
|
||
.org $7FF0
|
||
.byte $4E,$45,$53,$1A,$02,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
|
||
.segment "CODE" ; Define a segment called "CODE" for the PRG-ROM at $8000
|
||
.org $8000
|
||
Reset: ; TODO:
|
||
lda #$82 ; Load the A register with the literal hexadecimal value $82
|
||
ldx #82 ; Load the X register with the literal decimal value 82
|
||
ldy $82 ; Load the Y register with the value that is inside memory position $82
|
||
NMI: ; NMI handler
|
||
rti ; doesn't do anything
|
||
IRQ: ; IRQ handler
|
||
rti ; doesn't do anything
|
||
|
||
.segment "VECTORS" ; Add addresses with vectors at $FFFA
|
||
.org $FFFA
|
||
.word NMI ; Put 2 bytes with the NMI address at memory position $FFFA
|
||
.word Reset ; Put 2 bytes with the break address at memory position $FFFC
|
||
.word IRQ ; Put 2 bytes with the IRQ address at memory position $FFFE
|