/*

SDL - Simple DirectMedia Layer

Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Library General Public

License as published by the Free Software Foundation; either

version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Library General Public License for more details.

You should have received a copy of the GNU Library General Public

License along with this library; if not, write to the Free

Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Sam Lantinga

slouken@libsdl.org

*/

#ifdef SAVE_RCSID

static char rcsid =

"@(#) $Id$";

#endif

/*

* IKBD 6301 mouse vector

*

* Patrice Mandin

*/

.text

.globl _SDL_AtariXbiosMouseInstall

.globl _SDL_AtariXbiosMouseVector

.globl _SDL_AtariXbios_mouseb

.globl _SDL_AtariXbios_mousex

.globl _SDL_AtariXbios_mousey

/*--- Vector installer ---*/

_SDL_AtariXbiosMouseInstall:

movel sp@(4),a0

movel sp@(8),a1

/* Stop interrupts */

movew #0x2700,sr

/* Save old vector */

movel a0@(16),oldvector

/* Set our routine */

movel a1,a0@(16)

/* Restart interrupts */

movew #0x2300,sr

rts

/*--- Our mouse vector ---*/

.text

.even

.ascii "XBRA"

.ascii "_SDL"

_SDL_AtariXbiosMouseVector:

moveml d0/a1,sp@-

/* Mouse buttons */

moveb (a0),d0

andw #3,d0

movew d0,_SDL_AtariXbios_mouseb

/* X movement */

moveb a0@(1),d0

extw d0

addw d0,_SDL_AtariXbios_mousex

/* Y movement */

moveb a0@(2),d0

extw d0

addw d0,_SDL_AtariXbios_mousey

/* Jump through old vector */

movel oldvector,a1

jsr (a1)

moveml sp@+,d0/a1

rts

.data

.even

.comm oldvector,4*1

.even

.comm _SDL_AtariXbios_mousex,2*1

.even

.comm _SDL_AtariXbios_mousey,2*1

.even

.comm _SDL_AtariXbios_mouseb,2*1