git.sur5r.net Git - cc65/blob - libsrc/pce/waitvsync.s

   1 ;
   2 ; Written by Groepaz <groepaz@gmx.net>
   3 ;
   4 ; void waitvsync (void);
   5 ;
   6
   7         .export         _waitvsync
   8
   9         .forceimport    ticktock        ; make sure that tickcount changes
  10
  11         .include        "extzp.inc"
  12
  13 .proc   _waitvsync
  14         lda     tickcount
  15 @lp:    cmp     tickcount
  16         beq     @lp
  17         rts
  18 .endproc