29 lines
700 B
NASM
29 lines
700 B
NASM
.segment "HEADER" ; Don’t forget to always add the iNES header to your ROM files
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.org $7FF0
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.byte $4E,$45,$53,$1A,$02,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
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.segment "CODE" ; Define a segment called "CODE" for the PRG-ROM at $8000
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.org $8000
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Reset: ; TODO:
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lda #15
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tax
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tay
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txa
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tya
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ldx #6
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txa
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tay
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NMI: ; NMI handler
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rti ; doesn't do anything
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IRQ: ; IRQ handler
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rti ; doesn't do anything
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.segment "VECTORS" ; Add addresses with vectors at $FFFA
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.org $FFFA
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.word NMI ; Put 2 bytes with the NMI address at memory position $FFFA
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.word Reset ; Put 2 bytes with the break address at memory position $FFFC
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.word IRQ ; Put 2 bytes with the IRQ address at memory position $FFFE
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