git.sur5r.net Git - cc65/blob - libsrc/atari5200/chline.s

   1 ;
   2 ; Ullrich von Bassewitz, 08.08.1998
   3 ;
   4 ; void chlinexy (unsigned char x, unsigned char y, unsigned char length);
   5 ; void chline (unsigned char length);
   6 ;
   7
   8         .export         _chlinexy, _chline
   9         .import         gotoxy, cputdirect
  10         .importzp       tmp1
  11         .include        "atari5200.inc"
  12
  13 _chlinexy:
  14         pha                     ; Save the length
  15         jsr     gotoxy          ; Call this one, will pop params
  16         pla                     ; Restore the length
  17
  18 _chline:
  19         cmp     #0              ; Is the length zero?
  20         beq     L9              ; Jump if done
  21         sta     tmp1
  22 L1:     lda     #CH_HLINE       ; Horizontal line, screen code
  23         jsr     cputdirect      ; Direct output
  24         dec     tmp1
  25         bne     L1
  26 L9:     rts