mirror of
https://github.com/deater/dos33fsprogs.git
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23 lines
468 B
ArmAsm
23 lines
468 B
ArmAsm
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tracker_init:
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; setup initial ay-3-8910 values (this depends on song)
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init_registers_to_zero:
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ldx #$13 ; zero $70--$83
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lda #0
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; sta SONG_OFFSET ; also init song stuff
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; sta SONG_COUNTDOWN
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init_loop:
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sta AY_REGS,X
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dex
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bpl init_loop
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lda #$38
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sta AY_REGS+7 ; $07 mixer (ABC on)
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lda #$0E
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sta AY_REGS+8 ; $08 volume A
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lda #$0C
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sta AY_REGS+9 ; $09 volume B
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sta AY_REGS+10 ; $0A volume C
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