cc65/libsrc/apple2/gotoxy.s

;
; Ullrich von Bassewitz, 06.08.1998
;
; void __fastcall__ gotoxy (unsigned char x, unsigned char y);
; void __fastcall__ gotox (unsigned char x);
;

        .export         gotoxy, _gotoxy, _gotox
        .import         popa, VTABZ

        .include        "apple2.inc"

gotoxy:
        jsr     popa            ; Get Y

_gotoxy:
        clc
        adc     WNDTOP
        sta     CV              ; Store Y
        jsr     VTABZ
        jsr     popa            ; Get X

_gotox:
        sta     CH              ; Store X
        rts
Update from Oliver Schmidt: Includes gotox/gotoy which were missing before. git-svn-id: svn://svn.cc65.org/cc65/trunk@3447 b7a2c559-68d2-44c3-8de9-860c34a00d81 2005-04-01 09:59:53 +00:00			`;`
			`; Ullrich von Bassewitz, 06.08.1998`
			`;`
			`; void __fastcall__ gotoxy (unsigned char x, unsigned char y);`
			`; void __fastcall__ gotox (unsigned char x);`
			`;`

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			`.export gotoxy, _gotoxy, _gotox`
Update from Oliver Schmidt: Includes gotox/gotoy which were missing before. git-svn-id: svn://svn.cc65.org/cc65/trunk@3447 b7a2c559-68d2-44c3-8de9-860c34a00d81 2005-04-01 09:59:53 +00:00			`.import popa, VTABZ`

			`.include "apple2.inc"`

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			`gotoxy:`
			`jsr popa ; Get Y`

Update from Oliver Schmidt: Includes gotox/gotoy which were missing before. git-svn-id: svn://svn.cc65.org/cc65/trunk@3447 b7a2c559-68d2-44c3-8de9-860c34a00d81 2005-04-01 09:59:53 +00:00			`_gotoxy:`
			`clc`
			`adc WNDTOP`
Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 11:56:54 +00:00			`sta CV ; Store Y`
Update from Oliver Schmidt: Includes gotox/gotoy which were missing before. git-svn-id: svn://svn.cc65.org/cc65/trunk@3447 b7a2c559-68d2-44c3-8de9-860c34a00d81 2005-04-01 09:59:53 +00:00			`jsr VTABZ`
Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 11:56:54 +00:00			`jsr popa ; Get X`
Update from Oliver Schmidt: Includes gotox/gotoy which were missing before. git-svn-id: svn://svn.cc65.org/cc65/trunk@3447 b7a2c559-68d2-44c3-8de9-860c34a00d81 2005-04-01 09:59:53 +00:00
			`_gotox:`
Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 11:56:54 +00:00			`sta CH ; Store X`
Update from Oliver Schmidt: Includes gotox/gotoy which were missing before. git-svn-id: svn://svn.cc65.org/cc65/trunk@3447 b7a2c559-68d2-44c3-8de9-860c34a00d81 2005-04-01 09:59:53 +00:00			`rts`