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cc65/libsrc/c64/waitvsync.s
2017-07-18 01:04:53 +02:00

19 lines
268 B
ArmAsm

;
; Written by Groepaz <groepaz@gmx.net>
;
; void waitvsync (void);
;
.export _waitvsync
.include "c64.inc"
_waitvsync:
@l1:
bit VIC_CTRL1
bpl @l1
@l2:
bit VIC_CTRL1
bmi @l2
rts