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https://github.com/sehugg/8bitworkshop.git
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73 lines
1.7 KiB
ArmAsm
73 lines
1.7 KiB
ArmAsm
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; music and SFX from GoatTracker 2 sample files
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; http://sourceforge.net/projects/goattracker2
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.segment "DATA"
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_sid_playing: .byte $00
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.segment "SIDFILE"
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.incbin "sidmusic1.bin"
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.segment "LOWCODE"
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.global _sid_init, _sid_update, _sid_sfx
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.global _sid_start, _sid_stop, _sid_playing
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_sid_init:
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jmp $1000
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_sid_update:
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bit _sid_playing
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bpl @noplay
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jmp $1003
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@noplay:
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rts
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_sid_sfx:
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tax
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lda sfxtbllo,x ;Address in A,Y
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ldy sfxtblhi,x
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ldx #$0e ;Channel index in X
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jmp $1006 ;(0, 7 or 14)
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_sid_start:
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lda #$80
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bne skipstop
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_sid_stop:
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lda #$00
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sta $d418
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skipstop:
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sta _sid_playing
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rts
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sfxtbllo: .byte <arpeggio2
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.byte <arpeggio1
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.byte <gunshot
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.byte <explosion
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sfxtblhi: .byte >arpeggio2
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.byte >arpeggio1
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.byte >gunshot
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.byte >explosion
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arpeggio2:
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.byte $00,$89,$04,$A2,$41,$A2,$A2,$A6,$A6,$A6,$40,$A9,$A9,$A9,$A2,$A2
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.byte $A2,$A6,$A6,$A6,$A9,$A9,$A9,$A2,$A2,$A2,$A6,$A6,$A6,$A9,$A9,$A9
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.byte $A2,$A2,$A2,$A6,$A6,$A6,$A9,$A9,$A9,$00
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arpeggio1:
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.byte $0A,$00,$02,$A0,$41,$A0,$A0,$A4,$A4,$A4,$A7,$A7,$A7,$A0,$A0,$A0
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.byte $A4,$A4,$A4,$A7,$A7,$A7,$A0,$A0,$A0,$A4,$A4,$A4,$A7,$A7,$A7,$A0
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.byte $A0,$A0,$A4,$A4,$A4,$A7,$A7,$A7,$00
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gunshot:
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.byte $00,$F9,$08,$C4,$81,$A8,$41,$C0,$81,$BE,$BC,$80,$BA,$B8,$B6,$B4
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.byte $B2,$B0,$AE,$AC,$AA,$A8,$A6,$A4,$A2,$A0,$9E,$9C,$9A,$98,$96,$94
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.byte $92,$90,$00
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explosion:
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.byte $00,$FA,$08,$B8,$81,$A4,$41,$A0,$B4,$81,$98,$92,$9C,$90,$95,$9E
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.byte $92,$80,$94,$8F,$8E,$8D,$8C,$8B,$8A,$89,$88,$87,$86,$84,$00
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