git.sur5r.net Git - cc65/blob - libsrc/atari/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, setcursor
  10         .importzp       tmp1
  11
  12 .ifdef __ATARI5200__
  13 CHRCODE =       14
  14 .else
  15 CHRCODE =       $12+64
  16 .endif
  17
  18 _chlinexy:
  19         pha                     ; Save the length
  20         jsr     gotoxy          ; Call this one, will pop params
  21         pla                     ; Restore the length
  22
  23 _chline:
  24         cmp     #0              ; Is the length zero?
  25         beq     L9              ; Jump if done
  26         sta     tmp1
  27 L1:     lda     #CHRCODE        ; Horizontal line, screen code
  28         jsr     cputdirect      ; Direct output
  29         dec     tmp1
  30         bne     L1
  31 L9:     jmp     setcursor