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8bitworkshop/presets/vcs/xtimer.h
2018-08-27 16:50:53 -04:00

11 lines
228 B
C

; Fetchs the approximate scanline (could be off by +/- 1)
; into A. Takes 11 or 14 cycles.
MAC GET_APPROX_SCANLINE
ldy INTIM
lda Timer2Scanline,y
bne .Ok
lda Timer2Scanline-1,y
.Ok
ENDM