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demo: unwisely shave off like 10 bytes
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123d684970
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8643183756
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@ -46,6 +46,11 @@ main_loop:
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rol
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tax
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lda PAGE1,X
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; lda AY_REGS+7
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; sta $5000
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; sta $3000
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jmp main_loop
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@ -9,16 +9,16 @@ channel_a_volume:
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.byte 0*8,1*8,2*8,4*8
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tracks_l:
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.byte <track4,<track0,<track1,<track2,<track3
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.byte <track4,<track0 ;,<track1,<track2,<track3
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; assume all on same page
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; tracks_h:
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; .byte >track4,>track0,>track1,>track2,>track3
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; .byte >track4,>track0 ;,>track1,>track2,>track3
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bamps_l:
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.byte <bamps4,<bamps0,<bamps1,<bamps2,<bamps3
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.byte <bamps4,<bamps0 ;,<bamps1,<bamps2,<bamps3
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; bamps_h:
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; .byte >bamps4,>bamps0,>bamps1,>bamps2,>bamps3
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; .byte >bamps4,>bamps0 ;,>bamps1,>bamps2,>bamps3
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@ -113,7 +113,7 @@ track0:
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.byte $14 ; frame=62 A=2 L=2
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; last: a=10 b=-1 len=2
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.byte $54 ; frame=64 A=10 L=2
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.byte $ff
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;.byte $ff
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track1:
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; A: 12
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@ -203,7 +203,7 @@ track1:
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.byte $14 ; frame=62 A=2 L=2
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; last: a=10 b=-1 len=2
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.byte $54 ; frame=64 A=10 L=2
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.byte $ff
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;.byte $ff
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track2:
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; A: 15
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@ -289,7 +289,7 @@ track2:
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.byte $26 ; frame=56 A=4 L=3
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; last: a=0 b=-1 len=8
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.byte $10 ; frame=64 A=0 L=8
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.byte $ff
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;.byte $ff
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track3:
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; A: 15
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@ -26,11 +26,11 @@ track_smc:
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;====================================
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; if at end, loop back to beginning
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ldy WHICH_TRACK ; get current track in Y
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iny ; increment track
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; ldy WHICH_TRACK ; get current track in Y
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; iny ; increment track
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cpy #5 ; see if off end
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bne no_wrap
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; cpy #5 ; see if off end
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; bne no_wrap
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ldy #1 ; loop to track 1
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no_wrap:
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sty WHICH_TRACK
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