SDL_sysjoystick.c
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2006 Sam Lantinga
4
5
This library is free software; you can redistribute it and/or
6
modify it under the terms of the GNU Lesser General Public
7
License as published by the Free Software Foundation; either
8
version 2.1 of the License, or (at your option) any later version.
9
10
11
12
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
13
Lesser General Public License for more details.
15
16
17
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19
20
21
22
23
24
25
26
27
28
Sam Lantinga
slouken@libsdl.org
*/
/*
* Atari Joystick/Joypad drivers
*
* Patrice Mandin
*/
29
#include <mint/cookie.h>
30
31
#include <mint/osbind.h>
32
33
#include "SDL_stdlib.h"
#include "SDL_string.h"
34
35
36
37
38
39
#include "SDL_types.h"
#include "SDL_error.h"
#include "SDL_joystick.h"
#include "SDL_sysjoystick.h"
#include "SDL_joystick_c.h"
40
41
42
#include "SDL_ikbdinterrupt_s.h"
#include "SDL_xbiosevents_c.h"
#include "SDL_xbiosinterrupt_s.h"
43
44
45
46
/*--- Const ---*/
/* We can have:
47
48
1 joystick on IKBD port 1, read via hardware I/O
or same joystick on IKBD port 1, read via xbios
49
50
51
52
53
54
55
56
57
2 joypads on ports A,B
or 4 joysticks on joypads ports A,B
or 1 lightpen on joypad port A
or 2 analog paddles on joypads ports A,B
2 joysticks on parallel port
*/
enum {
IKBD_JOY1=0,
58
XBIOS_JOY1,
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
PORTA_PAD,
PORTB_PAD,
PORTA_JOY0,
PORTA_JOY1,
PORTB_JOY0,
PORTB_JOY1,
PORTA_LP,
PORTA_ANPAD,
PORTB_ANPAD,
#if 0
PARA_JOY0,
PARA_JOY1,
#endif
MAX_JOYSTICKS
};
enum {
MCH_ST=0,
MCH_STE,
MCH_TT,
79
MCH_F30,
80
MCH_CLONE,
81
MCH_ARANYM
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
};
/* Joypad buttons
* Procontroller note:
* L,R are connected to 4,6
* X,Y,Z are connected to 7,8,9
*/
enum {
JP_UP=0, JP_DOWN, JP_LEFT, JP_RIGHT,
JP_KPMULT, JP_KP7, JP_KP4, JP_KP1,
JP_KP0, JP_KP8, JP_KP5, JP_KP2,
JP_KPNUM, JP_KP9, JP_KP6, JP_KP3,
JP_PAUSE, JP_FIRE0, JP_UNDEF0, JP_FIRE1,
JP_UNDEF1, JP_FIRE2, JP_UNDEF2, JP_OPTION
};
#define JP_NUM_BUTTONS 17
#define PORT_JS_RIGHT (1<<0)
#define PORT_JS_LEFT (1<<1)
#define PORT_JS_DOWN (1<<2)
#define PORT_JS_UP (1<<3)
#define PORT_JS_FIRE (1<<4)
/*--- Types ---*/
typedef struct {
SDL_bool enabled;
unsigned char *name;
Uint32 prevstate;
} atarijoy_t;
/*--- Variables ---*/
static atarijoy_t atarijoysticks[MAX_JOYSTICKS]={
{SDL_FALSE,"IKBD joystick port 1",0},
119
{SDL_FALSE,"Xbios joystick port 1",0},
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
{SDL_FALSE,"Joypad port A",0},
{SDL_FALSE,"Joypad port B",0},
{SDL_FALSE,"Joystick 0 port A",0},
{SDL_FALSE,"Joystick 1 port A",0},
{SDL_FALSE,"Joystick 0 port B",0},
{SDL_FALSE,"Joystick 1 port B",0},
{SDL_FALSE,"Lightpen port A",0},
{SDL_FALSE,"Analog paddle port A",0},
{SDL_FALSE,"Analog paddle port B",0}
#if 0
,{SDL_FALSE,"Joystick 0 parallel port",0},
{SDL_FALSE,"Joystick 1 parallel port",0}
#endif
};
static const int jp_buttons[JP_NUM_BUTTONS]={
136
137
138
139
140
JP_FIRE0, JP_FIRE1, JP_FIRE2, JP_PAUSE,
JP_OPTION, JP_KPMULT, JP_KPNUM, JP_KP0,
JP_KP1, JP_KP2, JP_KP3, JP_KP4,
JP_KP5, JP_KP6, JP_KP7, JP_KP8,
JP_KP9
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
};
static SDL_bool joypad_ports_enabled=SDL_FALSE;
/* Updated joypad ports */
static Uint16 jp_paddles[4];
static Uint16 jp_lightpens[2];
static Uint16 jp_directions;
static Uint16 jp_fires;
static Uint32 jp_joypads[2];
/*--- Functions prototypes ---*/
static int GetEnabledAtariJoystick(int index);
static void UpdateJoypads(void);
/*--- Functions ---*/
int SDL_SYS_JoystickInit(void)
{
int i;
unsigned long cookie_mch;
163
const char *envr=SDL_getenv("SDL_JOYSTICK_ATARI");
164
165
#define TEST_JOY_ENABLED(env,idstring,num) \
166
if (SDL_strstr(env,idstring"-off")) { \
167
168
atarijoysticks[num].enabled=SDL_FALSE; \
} \
169
if (SDL_strstr(env,idstring"-on")) { \
170
171
172
173
174
175
176
177
178
179
atarijoysticks[num].enabled=SDL_TRUE; \
}
/* Cookie _MCH present ? if not, assume ST machine */
if (Getcookie(C__MCH, &cookie_mch) != C_FOUND) {
cookie_mch = MCH_ST << 16;
}
/* Enable some default joysticks */
if ((cookie_mch == MCH_ST<<16) || ((cookie_mch>>16) == MCH_STE) ||
180
181
(cookie_mch == MCH_TT<<16) || (cookie_mch == MCH_F30<<16) ||
(cookie_mch == MCH_ARANYM<<16)) {
182
atarijoysticks[IKBD_JOY1].enabled=(SDL_AtariIkbd_enabled!=0);
183
184
185
186
187
}
if ((cookie_mch == MCH_STE<<16) || (cookie_mch == MCH_F30<<16)) {
atarijoysticks[PORTA_PAD].enabled=SDL_TRUE;
atarijoysticks[PORTB_PAD].enabled=SDL_TRUE;
}
188
189
190
if (!atarijoysticks[IKBD_JOY1].enabled) {
atarijoysticks[XBIOS_JOY1].enabled=(SDL_AtariXbios_enabled!=0);
}
191
192
193
194
195
/* Read environment for joysticks to enable */
if (envr) {
/* IKBD on any Atari, maybe clones */
if ((cookie_mch == MCH_ST<<16) || ((cookie_mch>>16) == MCH_STE) ||
196
197
(cookie_mch == MCH_TT<<16) || (cookie_mch == MCH_F30<<16) ||
(cookie_mch == MCH_ARANYM<<16)) {
198
199
if (SDL_AtariIkbd_enabled!=0) {
TEST_JOY_ENABLED(envr, "ikbd-joy1", IKBD_JOY1);
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
}
}
/* Joypads ports only on STE and Falcon */
if ((cookie_mch == MCH_STE<<16) || (cookie_mch == MCH_F30<<16)) {
TEST_JOY_ENABLED(envr, "porta-pad", PORTA_PAD);
if (!atarijoysticks[PORTA_PAD].enabled) {
TEST_JOY_ENABLED(envr, "porta-joy0", PORTA_JOY0);
TEST_JOY_ENABLED(envr, "porta-joy1", PORTA_JOY1);
if (!(atarijoysticks[PORTA_JOY0].enabled) && !(atarijoysticks[PORTA_JOY1].enabled)) {
TEST_JOY_ENABLED(envr, "porta-lp", PORTA_LP);
if (!atarijoysticks[PORTA_LP].enabled) {
TEST_JOY_ENABLED(envr, "porta-anpad", PORTA_ANPAD);
}
}
}
TEST_JOY_ENABLED(envr, "portb-pad", PORTB_PAD);
if (!atarijoysticks[PORTB_PAD].enabled) {
TEST_JOY_ENABLED(envr, "portb-joy0", PORTB_JOY0);
TEST_JOY_ENABLED(envr, "portb-joy1", PORTB_JOY1);
if (!(atarijoysticks[PORTB_JOY0].enabled) && !(atarijoysticks[PORTB_JOY1].enabled)) {
TEST_JOY_ENABLED(envr, "portb-anpad", PORTB_ANPAD);
}
}
}
225
226
227
228
229
230
if (!atarijoysticks[IKBD_JOY1].enabled) {
if (SDL_AtariXbios_enabled!=0) {
TEST_JOY_ENABLED(envr, "xbios-joy1", XBIOS_JOY1);
}
}
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
#if 0
/* Parallel port on any Atari, maybe clones */
if ((cookie_mch == MCH_ST<<16) || ((cookie_mch>>16) == MCH_STE) ||
(cookie_mch == MCH_TT<<16) || (cookie_mch == MCH_F30<<16)) {
TEST_JOY_ENABLED(envr, "para-joy0", PARA_JOY0);
TEST_JOY_ENABLED(envr, "para-joy1", PARA_JOY1);
}
#endif
}
/* Need to update joypad ports ? */
joypad_ports_enabled=SDL_FALSE;
for (i=PORTA_PAD;i<=PORTB_ANPAD;i++) {
if (atarijoysticks[i].enabled) {
joypad_ports_enabled=SDL_TRUE;
break;
}
}
SDL_numjoysticks = 0;
for (i=0;i<MAX_JOYSTICKS;i++) {
if (atarijoysticks[i].enabled) {
++SDL_numjoysticks;
}
}
return(SDL_numjoysticks);
}
static int GetEnabledAtariJoystick(int index)
{
int i,j;
/* Return the nth'index' enabled atari joystick */
j=0;
for (i=0;i<MAX_JOYSTICKS;i++) {
267
268
269
270
271
272
if (!atarijoysticks[i].enabled) {
continue;
}
if (j==index) {
break;
274
275
++j;
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
}
if (i==MAX_JOYSTICKS)
return -1;
return i;
}
const char *SDL_SYS_JoystickName(int index)
{
int numjoystick;
numjoystick=GetEnabledAtariJoystick(index);
if (numjoystick==-1)
return NULL;
return(atarijoysticks[numjoystick].name);
}
int SDL_SYS_JoystickOpen(SDL_Joystick *joystick)
{
int numjoystick;
numjoystick=GetEnabledAtariJoystick(joystick->index);
if (numjoystick==-1)
return -1;
302
joystick->naxes=0;
303
joystick->nhats=0;
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
joystick->nballs=0;
switch(numjoystick) {
case PORTA_PAD:
case PORTB_PAD:
joystick->nhats=1;
joystick->nbuttons=JP_NUM_BUTTONS;
break;
case PORTA_LP:
case PORTA_ANPAD:
case PORTB_ANPAD:
joystick->naxes=2;
joystick->nbuttons=2;
break;
default:
joystick->nhats=1;
joystick->nbuttons=1;
break;
}
323
324
325
326
327
328
329
return(0);
}
void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick)
{
int numjoystick;
330
Uint8 hatstate;
331
332
333
334
335
336
337
338
339
340
341
342
343
344
Uint32 curstate,prevstate;
numjoystick=GetEnabledAtariJoystick(joystick->index);
if (numjoystick==-1)
return;
prevstate = atarijoysticks[numjoystick].prevstate;
if (joypad_ports_enabled) {
Supexec(UpdateJoypads);
}
switch (numjoystick) {
case IKBD_JOY1:
345
case XBIOS_JOY1:
347
348
349
350
351
352
353
354
355
curstate = 0;
if (numjoystick==IKBD_JOY1) {
curstate = SDL_AtariIkbd_joystick & 0xff;
}
if (numjoystick==XBIOS_JOY1) {
curstate = SDL_AtariXbios_joystick & 0xff;
}
356
if (curstate != prevstate) {
357
358
359
hatstate = SDL_HAT_CENTERED;
if (curstate & IKBD_JOY_LEFT) {
hatstate |= SDL_HAT_LEFT;
361
362
if (curstate & IKBD_JOY_RIGHT) {
hatstate |= SDL_HAT_RIGHT;
364
365
366
367
368
369
370
371
if (curstate & IKBD_JOY_UP) {
hatstate |= SDL_HAT_UP;
}
if (curstate & IKBD_JOY_DOWN) {
hatstate |= SDL_HAT_DOWN;
}
SDL_PrivateJoystickHat(joystick, 0, hatstate);
372
373
374
375
376
377
378
379
/* Button */
if ((curstate & IKBD_JOY_FIRE) && !(prevstate & IKBD_JOY_FIRE)) {
SDL_PrivateJoystickButton(joystick,0,SDL_PRESSED);
}
if (!(curstate & IKBD_JOY_FIRE) && (prevstate & IKBD_JOY_FIRE)) {
SDL_PrivateJoystickButton(joystick,0,SDL_RELEASED);
}
}
380
atarijoysticks[numjoystick].prevstate = curstate;
381
382
383
384
385
386
387
388
389
390
391
392
}
break;
case PORTA_PAD:
case PORTB_PAD:
{
int numjoypad,i;
numjoypad=0;
if (numjoystick==PORTB_PAD) numjoypad=1;
curstate=jp_joypads[numjoypad];
if (curstate!=prevstate) {
393
394
395
396
397
398
399
400
401
hatstate = SDL_HAT_CENTERED;
if (curstate & (1<<JP_LEFT)) {
hatstate |= SDL_HAT_LEFT;
}
if (curstate & (1<<JP_RIGHT)) {
hatstate |= SDL_HAT_RIGHT;
}
if (curstate & (1<<JP_UP)) {
hatstate |= SDL_HAT_UP;
403
404
if (curstate & (1<<JP_DOWN)) {
hatstate |= SDL_HAT_DOWN;
406
407
SDL_PrivateJoystickHat(joystick, 0, hatstate);
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
/* Buttons */
for (i=0;i<JP_NUM_BUTTONS;i++) {
int button;
button=1<<jp_buttons[i];
if ((curstate & button) && !(prevstate & button)) {
SDL_PrivateJoystickButton(joystick,i,SDL_PRESSED);
}
if (!(curstate & button) && (prevstate & button)) {
SDL_PrivateJoystickButton(joystick,i,SDL_RELEASED);
}
}
}
atarijoysticks[numjoystick].prevstate = curstate;
}
break;
case PORTA_JOY0:
case PORTA_JOY1:
case PORTB_JOY0:
case PORTB_JOY1:
{
int fire_shift=0,dir_shift=0;
if (numjoystick==PORTA_JOY0) { fire_shift=0; dir_shift=0; }
if (numjoystick==PORTA_JOY1) { fire_shift=1; dir_shift=4; }
if (numjoystick==PORTB_JOY0) { fire_shift=2; dir_shift=8; }
if (numjoystick==PORTB_JOY1) { fire_shift=3; dir_shift=12; }
curstate = (jp_directions>>dir_shift) & 15;
curstate |= ((jp_fires>>fire_shift) & 1)<<4;
if (curstate != prevstate) {
441
442
443
444
445
446
hatstate = SDL_HAT_CENTERED;
if (curstate & PORT_JS_LEFT) {
hatstate |= SDL_HAT_LEFT;
}
if (curstate & PORT_JS_RIGHT) {
hatstate |= SDL_HAT_RIGHT;
448
449
if (curstate & PORT_JS_UP) {
hatstate |= SDL_HAT_UP;
451
452
453
454
455
if (curstate & PORT_JS_DOWN) {
hatstate |= SDL_HAT_DOWN;
}
SDL_PrivateJoystickHat(joystick, 0, hatstate);
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
/* Button */
if ((curstate & PORT_JS_FIRE) && !(prevstate & PORT_JS_FIRE)) {
SDL_PrivateJoystickButton(joystick,0,SDL_PRESSED);
}
if (!(curstate & PORT_JS_FIRE) && (prevstate & PORT_JS_FIRE)) {
SDL_PrivateJoystickButton(joystick,0,SDL_RELEASED);
}
}
atarijoysticks[numjoystick].prevstate = curstate;
}
break;
case PORTA_LP:
{
int i;
curstate = jp_lightpens[0]>>1;
curstate |= (jp_lightpens[1]>>1)<<15;
curstate |= (jp_fires & 3)<<30;
if (curstate != prevstate) {
/* X axis */
477
SDL_PrivateJoystickAxis(joystick,0,jp_lightpens[0] ^ 0x8000);
478
/* Y axis */
479
SDL_PrivateJoystickAxis(joystick,1,jp_lightpens[1] ^ 0x8000);
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
/* Buttons */
for (i=0;i<2;i++) {
int button;
button=1<<(30+i);
if ((curstate & button) && !(prevstate & button)) {
SDL_PrivateJoystickButton(joystick,i,SDL_PRESSED);
}
if (!(curstate & button) && (prevstate & button)) {
SDL_PrivateJoystickButton(joystick,i,SDL_RELEASED);
}
}
}
atarijoysticks[numjoystick].prevstate = curstate;
}
break;
case PORTA_ANPAD:
case PORTB_ANPAD:
{
int numpaddle, i;
numpaddle=0<<1;
if (numjoystick==PORTB_ANPAD) numpaddle=1<<1;
curstate = jp_paddles[numpaddle]>>1;
curstate |= (jp_paddles[numpaddle+1]>>1)<<15;
curstate |= ((jp_fires>>numpaddle) & 3)<<30;
if (curstate != prevstate) {
/* X axis */
511
SDL_PrivateJoystickAxis(joystick,0,jp_paddles[numpaddle] ^ 0x8000);
512
/* Y axis */
513
SDL_PrivateJoystickAxis(joystick,1,jp_paddles[numpaddle+1] ^ 0x8000);
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
/* Buttons */
for (i=0;i<2;i++) {
int button;
button=1<<(30+i);
if ((curstate & button) && !(prevstate & button)) {
SDL_PrivateJoystickButton(joystick,i,SDL_PRESSED);
}
if (!(curstate & button) && (prevstate & button)) {
SDL_PrivateJoystickButton(joystick,i,SDL_RELEASED);
}
}
}
atarijoysticks[numjoystick].prevstate = curstate;
}
break;
#if 0
case PARA_JOY0:
case PARA_JOY1:
break;
#endif
};
return;
}
void SDL_SYS_JoystickClose(SDL_Joystick *joystick)
{
return;
}
void SDL_SYS_JoystickQuit(void)
{
SDL_numjoysticks=0;
return;
}
/*--- Joypad I/O read/write interface ---*/
#define JOYPAD_IO_BASE (0xffff9200)
struct JOYPAD_IO_S {
Uint16 fires;
Uint16 directions;
Uint16 dummy1[6];
Uint16 paddles[4];
Uint16 dummy2[4];
Uint16 lightpens[2];
};
#define JOYPAD_IO ((*(volatile struct JOYPAD_IO_S *)JOYPAD_IO_BASE))
static void UpdateJoypads(void)
{
Uint16 tmp;
/*--- This function is called in supervisor mode ---*/
/* Update joysticks */
jp_fires = (~(JOYPAD_IO.fires)) & 15;
jp_directions = (~(JOYPAD_IO.directions));
/* Update lightpen */
tmp = JOYPAD_IO.lightpens[0] & 1023;
jp_lightpens[0] = (tmp<<6) | (tmp>>4);
tmp = JOYPAD_IO.lightpens[1] & 1023;
jp_lightpens[1] = (tmp<<6) | (tmp>>4);
/* Update paddles */
tmp = (JOYPAD_IO.paddles[0] & 255);
jp_paddles[0] = (tmp<<8) | tmp;
tmp = (JOYPAD_IO.paddles[1] & 255);
jp_paddles[1] = (tmp<<8) | tmp;
tmp = (JOYPAD_IO.paddles[2] & 255);
jp_paddles[2] = (tmp<<8) | tmp;
tmp = (JOYPAD_IO.paddles[3] & 255);
jp_paddles[3] = (tmp<<8) | tmp;
/* Update joypad 0 */
JOYPAD_IO.directions=0xfffe;
jp_joypads[0]=((~(JOYPAD_IO.fires)) & 3)<<(16);
JOYPAD_IO.directions=0xfffe;
jp_joypads[0] |= ((~(JOYPAD_IO.directions))>>8) & 15;
JOYPAD_IO.directions=0xfffd;
jp_joypads[0] |= ((~(JOYPAD_IO.fires)) & 3)<<(16+2);
JOYPAD_IO.directions=0xfffd;
jp_joypads[0] |= (((~(JOYPAD_IO.directions))>>8) & 15)<<4;
JOYPAD_IO.directions=0xfffb;
jp_joypads[0] |= ((~(JOYPAD_IO.fires)) & 3)<<(16+4);
JOYPAD_IO.directions=0xfffb;
jp_joypads[0] |= (((~(JOYPAD_IO.directions))>>8) & 15)<<8;
JOYPAD_IO.directions=0xfff7;
jp_joypads[0] |= ((~(JOYPAD_IO.fires)) & 3)<<(16+6);
JOYPAD_IO.directions=0xfff7;
jp_joypads[0] |= (((~(JOYPAD_IO.directions))>>8) & 15)<<12;
/* Update joypad 1 */
JOYPAD_IO.directions=0xffef;
jp_joypads[1]=((~(JOYPAD_IO.fires)) & (3<<2))<<(16-2);
JOYPAD_IO.directions=0xffef;
jp_joypads[1] |= ((~(JOYPAD_IO.directions))>>12) & 15;
JOYPAD_IO.directions=0xffdf;
jp_joypads[1] |= ((~(JOYPAD_IO.fires)) & (3<<2))<<(16);
JOYPAD_IO.directions=0xffdf;
jp_joypads[1] |= (((~(JOYPAD_IO.directions))>>12) & 15)<<4;
JOYPAD_IO.directions=0xffbf;
jp_joypads[1] |= ((~(JOYPAD_IO.fires)) & (3<<2))<<(16+2);
JOYPAD_IO.directions=0xffbf;
jp_joypads[1] |= (((~(JOYPAD_IO.directions))>>12) & 15)<<8;
JOYPAD_IO.directions=0xff7f;
jp_joypads[1] |= ((~(JOYPAD_IO.fires)) & (3<<2))<<(16+4);
JOYPAD_IO.directions=0xff7f;
jp_joypads[1] |= (((~(JOYPAD_IO.directions))>>12) & 15)<<12;
}