diff options
Diffstat (limited to 'macros/data.asm')
| -rw-r--r-- | macros/data.asm | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/macros/data.asm b/macros/data.asm index 16742d53..3f18fb6e 100644 --- a/macros/data.asm +++ b/macros/data.asm @@ -78,3 +78,12 @@ dbbw: MACRO db \1, \2 dw \3 ENDM + +sine_wave: MACRO +; \1: amplitude +x = 0 +REPT $20 + dw (sin(x) + (sin(x) & $ff)) >> 8 ; round up +x = x + (\1) * $40000 +ENDR +ENDM |