cc65/libsrc/nes/gotoxy.s

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

        .export         gotoxy, _gotoxy
        .import         setcursor
        .import         popa

        .include        "nes.inc"

gotoxy:
        jsr     popa            ; Get Y

_gotoxy:
        sta     CURS_Y          ; Set Y
        jsr     popa            ; Get X
        sta     CURS_X          ; Set X
        tay
        ldx     CURS_Y
        jmp     setcursor       ; Set the cursor position
More additions git-svn-id: svn://svn.cc65.org/cc65/trunk@2128 b7a2c559-68d2-44c3-8de9-860c34a00d81 2003-05-02 15:00:45 +00:00			`;`
			`; Ullrich von Bassewitz, 06.08.1998`
			`;`
			`; void gotoxy (unsigned char x, unsigned char y);`
			`;`

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`
More additions git-svn-id: svn://svn.cc65.org/cc65/trunk@2128 b7a2c559-68d2-44c3-8de9-860c34a00d81 2003-05-02 15:00:45 +00:00			`.import setcursor`
Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 11:56:54 +00:00			`.import popa`
More additions git-svn-id: svn://svn.cc65.org/cc65/trunk@2128 b7a2c559-68d2-44c3-8de9-860c34a00d81 2003-05-02 15:00:45 +00:00
			`.include "nes.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`
More additions git-svn-id: svn://svn.cc65.org/cc65/trunk@2128 b7a2c559-68d2-44c3-8de9-860c34a00d81 2003-05-02 15:00:45 +00:00
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:`
Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 11:56:54 +00:00			`sta CURS_Y ; Set Y`
			`jsr popa ; Get X`
			`sta CURS_X ; Set X`
More additions git-svn-id: svn://svn.cc65.org/cc65/trunk@2128 b7a2c559-68d2-44c3-8de9-860c34a00d81 2003-05-02 15:00:45 +00:00			`tay`
			`ldx CURS_Y`
Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 11:56:54 +00:00			`jmp setcursor ; Set the cursor position`