cc65/libsrc/osic1p/cvline.s

;
; based on CBM version
; originally by:
; Ullrich von Bassewitz, 08.08.1998
;
; void cvlinexy (unsigned char x, unsigned char y, unsigned char length);
; void cvline (unsigned char length);
;

        .export         _cvlinexy, _cvline
        .import         gotoxy, putchar, newline
        .importzp       tmp1

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

_cvline:
        cmp     #0              ; Is the length zero?
        beq     L9              ; Jump if done
        sta     tmp1
L1:     lda     #$95            ; Vertical bar
        jsr     putchar         ; Write, no cursor advance
        jsr     newline         ; Advance cursor to next line
        dec     tmp1
        bne     L1
L9:     rts
Added chline and cvline implementation from CBM implementation. 2014-11-29 21:13:07 +00:00			`;`
			`; based on CBM version`
			`; originally by:`
			`; Ullrich von Bassewitz, 08.08.1998`
			`;`
			`; void cvlinexy (unsigned char x, unsigned char y, unsigned char length);`
			`; void cvline (unsigned char length);`
			`;`

			`.export _cvlinexy, _cvline`
Introduced internal gotoxy that pops both parameters. About all CONIO functions offering a <...>xy variant call popa _gotoxy By providing an internal gotoxy variant that starts with a popa all those CONIO function can be shortened by 3 bytes. As soon as program calls more than one CONIO function this means an overall code size reduction. 2016-06-05 12:58:38 +00:00			`.import gotoxy, putchar, newline`
Added chline and cvline implementation from CBM implementation. 2014-11-29 21:13:07 +00:00			`.importzp tmp1`

			`_cvlinexy:`
			`pha ; Save the length`
Introduced internal gotoxy that pops both parameters. About all CONIO functions offering a <...>xy variant call popa _gotoxy By providing an internal gotoxy variant that starts with a popa all those CONIO function can be shortened by 3 bytes. As soon as program calls more than one CONIO function this means an overall code size reduction. 2016-06-05 12:58:38 +00:00			`jsr gotoxy ; Call this one, will pop params`
Added chline and cvline implementation from CBM implementation. 2014-11-29 21:13:07 +00:00			`pla ; Restore the length and run into _cvline`

			`_cvline:`
			`cmp #0 ; Is the length zero?`
			`beq L9 ; Jump if done`
			`sta tmp1`
Incorporated another round of feedback for pull request. Adjusted comment formatting in several assembler files. Removed dummy kbhit() function, as it's better to get a linker error than an implementation that does the wrong thing. 2015-02-18 17:38:42 +00:00			`L1: lda #$95 ; Vertical bar`
Added chline and cvline implementation from CBM implementation. 2014-11-29 21:13:07 +00:00			`jsr putchar ; Write, no cursor advance`
			`jsr newline ; Advance cursor to next line`
			`dec tmp1`
			`bne L1`
			`L9: rts`