BuildTrigTables: ld hl,TrigPrecalc ld de,SinCosTable push de ld bc,65 ldir dec hl ld b,63 MirrorSineWave: dec hl ld a,(hl) ld (de),a inc de djnz MirrorSineWave pop hl ld b,128+64 NegativeSineWave: xor a sub (hl) ld (de),a inc hl inc de djnz NegativeSineWave ret TrigPrecalc: .db 0, 3, 6, 9, 12, 15, 18, 21 .db 24, 27, 30, 33, 36, 39, 42, 45 .db 48, 51, 54, 57, 59, 62, 65, 67 .db 70, 73, 75, 78, 80, 82, 85, 87 .db 89, 91, 94, 96, 98, 100, 102, 103 .db 105, 107, 108, 110, 112, 113, 114, 116 .db 117, 118, 119, 120, 121, 122, 123, 123 .db 124, 125, 125, 126, 126, 126, 126, 126 .db 127