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/*
* Project: S.Ha.R.K.
*
* Coordinators: Giorgio Buttazzo <giorgio@sssup.it>
*
* Authors : Mauro Marinoni <mauro.marinoni@unipv.it>
* (see authors.txt for full list of hartik's authors)
*
* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
*
* http://www.sssup.it
* http://retis.sssup.it
* http://shark.sssup.it
*/
/*
* Copyright (C) 2000 Paolo Gai
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "kernel/kern.h"
#include "joy.h"
void get_joystick_buttons(JOY_BUTTONS *jb)
{
int j;
outp(JPORT, 0);
j = inp(JPORT);
jb->b1 = !(j & 0x10);
jb->b2 = !(j & 0x20);
jb->b3 = !(j & 0x40);
jb->b4 = !(j & 0x80);
}
int get_joystick_AB(JOY_STATE *jsa, JOY_STATE *jsb)
{
int i, j;
int mask = 15;
SYS_FLAGS f;
outp(JPORT, 0);
f = kern_fsave();
for (i=1; mask && i<CMAX; i++) {
j = inp(JPORT) ^ mask;
if (j & 1) { jsa->x = i; mask ^= 1; }
if (j & 2) { jsa->y = i; mask ^= 2; }
if (j & 4) { jsb->x = i; mask ^= 4; }
if (j & 8) { jsb->y = i; mask ^= 8; }
}
kern_frestore(f);
j = inp(JPORT);
jsa->b1 = !(j & 0x10);
jsa->b2 = !(j & 0x20);
jsb->b1 = !(j & 0x40);
jsb->b2 = !(j & 0x80);
return i==CMAX ? -1 : 0;
}
int get_joystick_A(JOY_STATE *js)
{
int i, j;
int mask = 3;
SYS_FLAGS f;
outp(JPORT, 0);
f = kern_fsave();
for (i=1; mask && i<CMAX; i++) {
j = inp(JPORT) ^ mask;
if (j & 1) { js->x = i; mask ^= 1; }
if (j & 2) { js->y = i; mask ^= 2; }
}
kern_frestore(f);
j = inp(JPORT);
js->b1 = !(j & 0x10);
js->b2 = !(j & 0x20);
return i==CMAX ? -1 : 0;
}
int get_joystick_B(JOY_STATE *js)
{
int i, j;
int mask = 12;
SYS_FLAGS f;
outp(JPORT, 0);
f = kern_fsave();
for (i=1; mask && i<CMAX; i++) {
j = inp(JPORT) ^ mask;
if (j & 4) { js->x = i; mask ^= 4; }
if (j & 8) { js->y = i; mask ^= 8; }
}
kern_frestore(f);
j = inp(JPORT);
js->b1 = !(j & 0x40);
js->b2 = !(j & 0x80);
return i==CMAX ? -1 : 0;
}
int get_joystick_bound_A(JOY_BOUND *jb)
{
int i, j;
int mask = 3;
int xmin = CMAX, ymin = CMAX;
int xmax = 0, ymax = 0;
int btn = 0;
SYS_FLAGS f;
while (!btn) {
mask = 3;
outp(JPORT, 0);
f = kern_fsave();
for (i=1; mask && i<CMAX; i++) {
j = inp(JPORT) ^ mask;
if (j & 1) {
if (i < xmin) xmin = i;
if (i > xmax) xmax = i;
mask ^= 1;
}
if (j & 2) {
if (i < ymin) ymin = i;
if (i > ymax) ymax = i;
mask ^= 2;
}
}
kern_frestore(f);
if (i==CMAX) return -1;
j = inp(JPORT);
btn += !(j & 0x10);
btn += !(j & 0x20);
}
jb->x_min = xmin;
jb->y_min = ymin;
jb->x_max = xmax;
jb->y_max = ymax;
return 0;
}
int get_joystick_bound_B(JOY_BOUND *jb)
{
int i, j;
int mask;
int xmin = CMAX, ymin = CMAX;
int xmax = 0, ymax = 0;
int btn = 0;
SYS_FLAGS f;
while (!btn) {
mask = 12;
outp(JPORT, 0);
f = kern_fsave();
for (i=1; mask && i<CMAX; i++) {
j = inp(JPORT) ^ mask;
if (j & 4) {
if (i < xmin) xmin = i;
if (i > xmax) xmax = i;
mask ^= 4;
}
if (j & 8) {
if (i < ymin) ymin = i;
if (i > ymax) ymax = i;
mask ^= 8;
}
}
kern_frestore(f);
if (i==CMAX) return -1;
j = inp(JPORT);
btn += !(j & 0x40);
btn += !(j & 0x80);
}
jb->x_min = xmin;
jb->y_min = ymin;
jb->x_max = xmax;
jb->y_max = ymax;
return 0;
}