File: chline.s

package info (click to toggle)
cc65 2.19-2
  • links: PTS
  • area: main
  • in suites: forky, sid, trixie
  • size: 20,268 kB
  • sloc: ansic: 117,151; asm: 66,339; pascal: 4,248; makefile: 1,009; perl: 607
file content (35 lines) | stat: -rw-r--r-- 1,043 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
;
; Ullrich von Bassewitz, 08.08.1998
;
; void __fastcall__ chlinexy (unsigned char x, unsigned char y, unsigned char length);
; void __fastcall__ chline (unsigned char length);
;

        .export         _chlinexy, _chline, chlinedirect
        .import         gotoxy, cputdirect

        .include        "zeropage.inc"
        .include        "apple2.inc"

_chlinexy:
        pha                     ; Save the length
        jsr     gotoxy          ; Call this one, will pop params
        pla                     ; Restore the length and run into _chline

_chline:
        .ifdef  __APPLE2ENH__
        ldx     #'_' | $80      ; Underscore, screen code
        .else
        ldx     #'-' | $80      ; Minus, screen code
        .endif

chlinedirect:
        stx     tmp1
        cmp     #$00            ; Is the length zero?
        beq     done            ; Jump if done
        sta     tmp2
:       lda     tmp1            ; Screen code
        jsr     cputdirect      ; Direct output
        dec     tmp2
        bne     :-
done:   rts