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wait for line 0 instead of last line

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This commit is contained in:
mrdudz 2017-07-18 01:06:20 +02:00
parent 8eee51913a
commit b6d3d32e88
1 changed files with 2 additions and 13 deletions
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15
libsrc/vic20/waitvsync.s
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@ -8,20 +8,9 @@
.include "vic20.inc"
; FIXME
; this flag doesnt work on vic20!!!
; it will have to be filled by a get_tv() constructor or so
PALFLAG = $2A6 ; $01 = PAL, $00 = NTSC
_waitvsync:
lda PALFLAG
beq @ntsc
ldx #(312-8)/2
.byte $2c
@ntsc:
ldx #(262-8)/2
@l2:
cpx VIC_HLINE
bcs @l2
lda VIC_HLINE
bne @l2
rts