diff options
| -rw-r--r-- | macros/code.asm | 4 | ||||
| -rw-r--r-- | macros/data.asm | 5 |
2 files changed, 5 insertions, 4 deletions
diff --git a/macros/code.asm b/macros/code.asm index 799c27d45..0b36f6c11 100644 --- a/macros/code.asm +++ b/macros/code.asm @@ -41,8 +41,8 @@ maskbits: MACRO ; example usage in rejection sampling: ; .loop ; call Random -; maskbits 30 -; cp 30 +; maskbits 26 +; cp 26 ; jr nc, .loop x = 1 rept 8 diff --git a/macros/data.asm b/macros/data.asm index 1543e601d..8adb33005 100644 --- a/macros/data.asm +++ b/macros/data.asm @@ -112,10 +112,11 @@ ENDM sine_wave: MACRO -x = 0.0 +; \1 samples of sin(x) from x=0 to x<32768 (pi radians) +x = 0 rept \1 dw (sin(x) + (sin(x) & $ff)) >> 8 ; round up -x = x + 1024.0 ; a circle has 65536.0 "degrees" +x = x + DIV(32768, \1) ; a circle has 65536 "degrees" endr ENDM |