git.sur5r.net Git - cc65/blob - libsrc/cbm/c_ckout.s

   1 ;
   2 ; Ullrich von Bassewitz, 03.06.1999
   3 ;
   4 ; unsigned char __fastcall__ cbm_k_ckout (unsigned char FN);
   5 ;
   6
   7         .include        "cbm.inc"
   8
   9         .export         _cbm_k_ckout
  10
  11
  12 _cbm_k_ckout:
  13         tax
  14         jsr     CKOUT
  15         ldx     #0              ; Clear high byte
  16         bcs     @NotOk
  17         txa
  18 @NotOk: rts