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

   1         .interruptor    ticktock, 24
   2
   3         .include        "gamate.inc"
   4         .include        "extzp.inc"
   5
   6 ticktock:
   7
   8         ; Increment the system tick counter.
   9         inc     tickcount
  10         bne     @s1
  11         inc     tickcount+1
  12         bne     @s1
  13         inc     tickcount+2
  14         bne     @s1
  15         inc     tickcount+3
  16 @s1:
  17         rts