cc65/libsrc/pce/waitvsync.s

19 lines
332 B
ArmAsm

;
; Written by Groepaz <groepaz@gmx.net>
;
; void waitvsync (void);
;
.export _waitvsync
.forceimport ticktock ; make sure that tickcount changes
.include "extzp.inc"
.proc _waitvsync
lda tickcount
@lp: cmp tickcount
beq @lp
rts
.endproc