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

   1 ;
   2 ; Written by Groepaz <groepaz@gmx.net>
   3 ;
   4 ; void waitvsync (void);
   5 ;
   6
   7         .include        "gamate.inc"
   8         .include        "extzp.inc"
   9
  10         .forceimport    ticktock
  11         .export         _waitvsync
  12
  13 ; FIXME: is this actually correct?
  14
  15 .proc   _waitvsync
  16
  17         lda     tickcount
  18 @lp:    cmp     tickcount
  19         beq     @lp
  20         rts
  21
  22 .endproc