git.sur5r.net Git - cc65/blob - libsrc/nes/_scrsize.s

   1 ;
   2 ; Ullrich von Bassewitz, 2003-04-14
   3 ; Stefan Haubenthal, 2011-05-11
   4 ;
   5 ; Screen size function
   6 ;
   7
   8         .export         screensize
   9
  10         .include        "nes.inc"
  11         .include        "get_tv.inc"
  12
  13
  14 .proc   screensize
  15
  16         jsr     _get_tv
  17         ldx     #charsperline
  18         ldy     #screenrows
  19         cmp     #TV::PAL
  20         beq     pal
  21         dey             ; NTSC rows
  22 pal:    rts
  23
  24 .endproc