root / hw / sb16.c @ fb065187
History | View | Annotate | Download (30.9 kB)
1 |
/*
|
---|---|
2 |
* QEMU Soundblaster 16 emulation
|
3 |
*
|
4 |
* Copyright (c) 2003-2004 Vassili Karpov (malc)
|
5 |
*
|
6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 |
* of this software and associated documentation files (the "Software"), to deal
|
8 |
* in the Software without restriction, including without limitation the rights
|
9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 |
* copies of the Software, and to permit persons to whom the Software is
|
11 |
* furnished to do so, subject to the following conditions:
|
12 |
*
|
13 |
* The above copyright notice and this permission notice shall be included in
|
14 |
* all copies or substantial portions of the Software.
|
15 |
*
|
16 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 |
* THE SOFTWARE.
|
23 |
*/
|
24 |
#include "vl.h" |
25 |
|
26 |
#define LENOFA(a) ((int) (sizeof(a)/sizeof(a[0]))) |
27 |
|
28 |
#define dolog(...) AUD_log ("sb16", __VA_ARGS__) |
29 |
#ifdef DEBUG
|
30 |
#define ldebug(...) dolog (__VA_ARGS__)
|
31 |
#else
|
32 |
#define ldebug(...)
|
33 |
#endif
|
34 |
|
35 |
/* #define DEBUG */
|
36 |
/* #define DEBUG_SB16_MOST */
|
37 |
|
38 |
#define IO_READ_PROTO(name) \
|
39 |
uint32_t name (void *opaque, uint32_t nport)
|
40 |
#define IO_WRITE_PROTO(name) \
|
41 |
void name (void *opaque, uint32_t nport, uint32_t val) |
42 |
|
43 |
static const char e3[] = "COPYRIGHT (C) CREATIVE TECHNOLOGY LTD, 1992."; |
44 |
|
45 |
static struct { |
46 |
int ver_lo;
|
47 |
int ver_hi;
|
48 |
int irq;
|
49 |
int dma;
|
50 |
int hdma;
|
51 |
int port;
|
52 |
} conf = {5, 4, 5, 1, 5, 0x220}; |
53 |
|
54 |
typedef struct SB16State { |
55 |
int irq;
|
56 |
int dma;
|
57 |
int hdma;
|
58 |
int port;
|
59 |
int ver;
|
60 |
|
61 |
int in_index;
|
62 |
int out_data_len;
|
63 |
int fmt_stereo;
|
64 |
int fmt_signed;
|
65 |
int fmt_bits;
|
66 |
audfmt_e fmt; |
67 |
int dma_auto;
|
68 |
int block_size;
|
69 |
int fifo;
|
70 |
int freq;
|
71 |
int time_const;
|
72 |
int speaker;
|
73 |
int needed_bytes;
|
74 |
int cmd;
|
75 |
int use_hdma;
|
76 |
int highspeed;
|
77 |
int can_write;
|
78 |
|
79 |
int v2x6;
|
80 |
|
81 |
uint8_t csp_param; |
82 |
uint8_t csp_value; |
83 |
uint8_t csp_mode; |
84 |
uint8_t csp_regs[256];
|
85 |
uint8_t csp_index; |
86 |
uint8_t csp_reg83[4];
|
87 |
int csp_reg83r;
|
88 |
int csp_reg83w;
|
89 |
|
90 |
uint8_t in2_data[10];
|
91 |
uint8_t out_data[50];
|
92 |
uint8_t test_reg; |
93 |
uint8_t last_read_byte; |
94 |
int nzero;
|
95 |
|
96 |
int left_till_irq;
|
97 |
|
98 |
int dma_running;
|
99 |
int bytes_per_second;
|
100 |
int align;
|
101 |
SWVoice *voice; |
102 |
|
103 |
QEMUTimer *ts, *aux_ts; |
104 |
/* mixer state */
|
105 |
int mixer_nreg;
|
106 |
uint8_t mixer_regs[256];
|
107 |
} SB16State; |
108 |
|
109 |
/* XXX: suppress that and use a context */
|
110 |
static struct SB16State dsp; |
111 |
|
112 |
static int magic_of_irq (int irq) |
113 |
{ |
114 |
switch (irq) {
|
115 |
case 5: |
116 |
return 2; |
117 |
case 7: |
118 |
return 4; |
119 |
case 9: |
120 |
return 1; |
121 |
case 10: |
122 |
return 8; |
123 |
default:
|
124 |
dolog ("bad irq %d\n", irq);
|
125 |
return 2; |
126 |
} |
127 |
} |
128 |
|
129 |
static int irq_of_magic (int magic) |
130 |
{ |
131 |
switch (magic) {
|
132 |
case 1: |
133 |
return 9; |
134 |
case 2: |
135 |
return 5; |
136 |
case 4: |
137 |
return 7; |
138 |
case 8: |
139 |
return 10; |
140 |
default:
|
141 |
dolog ("bad irq magic %d\n", magic);
|
142 |
return -1; |
143 |
} |
144 |
} |
145 |
|
146 |
#if 0
|
147 |
static void log_dsp (SB16State *dsp)
|
148 |
{
|
149 |
ldebug ("%s:%s:%d:%s:dmasize=%d:freq=%d:const=%d:speaker=%d\n",
|
150 |
dsp->fmt_stereo ? "Stereo" : "Mono",
|
151 |
dsp->fmt_signed ? "Signed" : "Unsigned",
|
152 |
dsp->fmt_bits,
|
153 |
dsp->dma_auto ? "Auto" : "Single",
|
154 |
dsp->block_size,
|
155 |
dsp->freq,
|
156 |
dsp->time_const,
|
157 |
dsp->speaker);
|
158 |
}
|
159 |
#endif
|
160 |
|
161 |
static void speaker (SB16State *s, int on) |
162 |
{ |
163 |
s->speaker = on; |
164 |
/* AUD_enable (s->voice, on); */
|
165 |
} |
166 |
|
167 |
static void control (SB16State *s, int hold) |
168 |
{ |
169 |
int dma = s->use_hdma ? s->hdma : s->dma;
|
170 |
s->dma_running = hold; |
171 |
|
172 |
ldebug ("hold %d high %d dma %d\n", hold, s->use_hdma, dma);
|
173 |
|
174 |
if (hold) {
|
175 |
DMA_hold_DREQ (dma); |
176 |
AUD_enable (s->voice, 1);
|
177 |
} |
178 |
else {
|
179 |
DMA_release_DREQ (dma); |
180 |
AUD_enable (s->voice, 0);
|
181 |
} |
182 |
} |
183 |
|
184 |
static void aux_timer (void *opaque) |
185 |
{ |
186 |
SB16State *s = opaque; |
187 |
s->can_write = 1;
|
188 |
pic_set_irq (s->irq, 1);
|
189 |
} |
190 |
|
191 |
#define DMA8_AUTO 1 |
192 |
#define DMA8_HIGH 2 |
193 |
|
194 |
static void dma_cmd8 (SB16State *s, int mask, int dma_len) |
195 |
{ |
196 |
s->fmt = AUD_FMT_U8; |
197 |
s->use_hdma = 0;
|
198 |
s->fmt_bits = 8;
|
199 |
s->fmt_signed = 0;
|
200 |
s->fmt_stereo = (s->mixer_regs[0x0e] & 2) != 0; |
201 |
if (-1 == s->time_const) { |
202 |
s->freq = 11025;
|
203 |
} |
204 |
else {
|
205 |
int tmp = (256 - s->time_const); |
206 |
s->freq = (1000000 + (tmp / 2)) / tmp; |
207 |
} |
208 |
|
209 |
if (-1 != dma_len) |
210 |
s->block_size = dma_len + 1;
|
211 |
|
212 |
s->freq >>= s->fmt_stereo; |
213 |
s->left_till_irq = s->block_size; |
214 |
s->bytes_per_second = (s->freq << s->fmt_stereo); |
215 |
/* s->highspeed = (mask & DMA8_HIGH) != 0; */
|
216 |
s->dma_auto = (mask & DMA8_AUTO) != 0;
|
217 |
s->align = (1 << s->fmt_stereo) - 1; |
218 |
|
219 |
ldebug ("freq %d, stereo %d, sign %d, bits %d, "
|
220 |
"dma %d, auto %d, fifo %d, high %d\n",
|
221 |
s->freq, s->fmt_stereo, s->fmt_signed, s->fmt_bits, |
222 |
s->block_size, s->dma_auto, s->fifo, s->highspeed); |
223 |
|
224 |
if (s->freq)
|
225 |
s->voice = AUD_open (s->voice, "sb16", s->freq,
|
226 |
1 << s->fmt_stereo, s->fmt);
|
227 |
|
228 |
control (s, 1);
|
229 |
speaker (s, 1);
|
230 |
} |
231 |
|
232 |
static void dma_cmd (SB16State *s, uint8_t cmd, uint8_t d0, int dma_len) |
233 |
{ |
234 |
s->use_hdma = cmd < 0xc0;
|
235 |
s->fifo = (cmd >> 1) & 1; |
236 |
s->dma_auto = (cmd >> 2) & 1; |
237 |
s->fmt_signed = (d0 >> 4) & 1; |
238 |
s->fmt_stereo = (d0 >> 5) & 1; |
239 |
|
240 |
switch (cmd >> 4) { |
241 |
case 11: |
242 |
s->fmt_bits = 16;
|
243 |
break;
|
244 |
|
245 |
case 12: |
246 |
s->fmt_bits = 8;
|
247 |
break;
|
248 |
} |
249 |
|
250 |
if (-1 != s->time_const) { |
251 |
#if 1 |
252 |
int tmp = 256 - s->time_const; |
253 |
s->freq = (1000000 + (tmp / 2)) / tmp; |
254 |
#else
|
255 |
/* s->freq = 1000000 / ((255 - s->time_const) << s->fmt_stereo); */
|
256 |
s->freq = 1000000 / ((255 - s->time_const)); |
257 |
#endif
|
258 |
s->time_const = -1;
|
259 |
} |
260 |
|
261 |
s->block_size = dma_len + 1;
|
262 |
s->block_size <<= (s->fmt_bits == 16);
|
263 |
if (!s->dma_auto) /* Miles Sound System ? */ |
264 |
s->block_size <<= s->fmt_stereo; |
265 |
|
266 |
ldebug ("freq %d, stereo %d, sign %d, bits %d, "
|
267 |
"dma %d, auto %d, fifo %d, high %d\n",
|
268 |
s->freq, s->fmt_stereo, s->fmt_signed, s->fmt_bits, |
269 |
s->block_size, s->dma_auto, s->fifo, s->highspeed); |
270 |
|
271 |
if (16 == s->fmt_bits) { |
272 |
if (s->fmt_signed) {
|
273 |
s->fmt = AUD_FMT_S16; |
274 |
} |
275 |
else {
|
276 |
s->fmt = AUD_FMT_U16; |
277 |
} |
278 |
} |
279 |
else {
|
280 |
if (s->fmt_signed) {
|
281 |
s->fmt = AUD_FMT_S8; |
282 |
} |
283 |
else {
|
284 |
s->fmt = AUD_FMT_U8; |
285 |
} |
286 |
} |
287 |
|
288 |
s->left_till_irq = s->block_size; |
289 |
|
290 |
s->bytes_per_second = (s->freq << s->fmt_stereo) << (s->fmt_bits == 16);
|
291 |
s->highspeed = 0;
|
292 |
s->align = (1 << (s->fmt_stereo + (s->fmt_bits == 16))) - 1; |
293 |
|
294 |
if (s->freq)
|
295 |
s->voice = AUD_open (s->voice, "sb16", s->freq,
|
296 |
1 << s->fmt_stereo, s->fmt);
|
297 |
|
298 |
control (s, 1);
|
299 |
speaker (s, 1);
|
300 |
} |
301 |
|
302 |
static inline void dsp_out_data (SB16State *s, uint8_t val) |
303 |
{ |
304 |
ldebug ("outdata %#x\n", val);
|
305 |
if (s->out_data_len < sizeof (s->out_data)) |
306 |
s->out_data[s->out_data_len++] = val; |
307 |
} |
308 |
|
309 |
static inline uint8_t dsp_get_data (SB16State *s) |
310 |
{ |
311 |
if (s->in_index)
|
312 |
return s->in2_data[--s->in_index];
|
313 |
else {
|
314 |
dolog ("buffer underflow\n");
|
315 |
return 0; |
316 |
} |
317 |
} |
318 |
|
319 |
static void command (SB16State *s, uint8_t cmd) |
320 |
{ |
321 |
ldebug ("command %#x\n", cmd);
|
322 |
|
323 |
if (cmd > 0xaf && cmd < 0xd0) { |
324 |
if (cmd & 8) { |
325 |
dolog ("ADC not yet supported (command %#x)\n", cmd);
|
326 |
} |
327 |
|
328 |
switch (cmd >> 4) { |
329 |
case 11: |
330 |
case 12: |
331 |
break;
|
332 |
default:
|
333 |
dolog ("%#x wrong bits\n", cmd);
|
334 |
} |
335 |
s->needed_bytes = 3;
|
336 |
} |
337 |
else {
|
338 |
switch (cmd) {
|
339 |
case 0x03: |
340 |
dsp_out_data (s, 0x10); /* s->csp_param); */ |
341 |
goto warn;
|
342 |
|
343 |
case 0x04: |
344 |
s->needed_bytes = 1;
|
345 |
goto warn;
|
346 |
|
347 |
case 0x05: |
348 |
s->needed_bytes = 2;
|
349 |
goto warn;
|
350 |
|
351 |
case 0x08: |
352 |
/* __asm__ ("int3"); */
|
353 |
goto warn;
|
354 |
|
355 |
case 0x0e: |
356 |
s->needed_bytes = 2;
|
357 |
goto warn;
|
358 |
|
359 |
case 0x09: |
360 |
dsp_out_data (s, 0xf8);
|
361 |
goto warn;
|
362 |
|
363 |
case 0x0f: |
364 |
s->needed_bytes = 1;
|
365 |
goto warn;
|
366 |
|
367 |
case 0x10: |
368 |
s->needed_bytes = 1;
|
369 |
goto warn;
|
370 |
|
371 |
case 0x14: |
372 |
s->needed_bytes = 2;
|
373 |
s->block_size = 0;
|
374 |
break;
|
375 |
|
376 |
case 0x20: /* Direct ADC, Juice/PL */ |
377 |
dsp_out_data (s, 0xff);
|
378 |
goto warn;
|
379 |
|
380 |
case 0x35: |
381 |
dolog ("MIDI command(0x35) not implemented\n");
|
382 |
break;
|
383 |
|
384 |
case 0x40: |
385 |
s->freq = -1;
|
386 |
s->time_const = -1;
|
387 |
s->needed_bytes = 1;
|
388 |
break;
|
389 |
|
390 |
case 0x41: |
391 |
s->freq = -1;
|
392 |
s->time_const = -1;
|
393 |
s->needed_bytes = 2;
|
394 |
break;
|
395 |
|
396 |
case 0x42: |
397 |
s->freq = -1;
|
398 |
s->time_const = -1;
|
399 |
s->needed_bytes = 2;
|
400 |
goto warn;
|
401 |
|
402 |
case 0x45: |
403 |
dsp_out_data (s, 0xaa);
|
404 |
goto warn;
|
405 |
|
406 |
case 0x47: /* Continue Auto-Initialize DMA 16bit */ |
407 |
break;
|
408 |
|
409 |
case 0x48: |
410 |
s->needed_bytes = 2;
|
411 |
break;
|
412 |
|
413 |
case 0x80: |
414 |
s->needed_bytes = 2;
|
415 |
break;
|
416 |
|
417 |
case 0x90: |
418 |
case 0x91: |
419 |
dma_cmd8 (s, ((cmd & 1) == 0) | DMA8_HIGH, -1); |
420 |
break;
|
421 |
|
422 |
case 0xd0: /* halt DMA operation. 8bit */ |
423 |
control (s, 0);
|
424 |
break;
|
425 |
|
426 |
case 0xd1: /* speaker on */ |
427 |
speaker (s, 1);
|
428 |
break;
|
429 |
|
430 |
case 0xd3: /* speaker off */ |
431 |
speaker (s, 0);
|
432 |
break;
|
433 |
|
434 |
case 0xd4: /* continue DMA operation. 8bit */ |
435 |
control (s, 1);
|
436 |
break;
|
437 |
|
438 |
case 0xd5: /* halt DMA operation. 16bit */ |
439 |
control (s, 0);
|
440 |
break;
|
441 |
|
442 |
case 0xd6: /* continue DMA operation. 16bit */ |
443 |
control (s, 1);
|
444 |
break;
|
445 |
|
446 |
case 0xd9: /* exit auto-init DMA after this block. 16bit */ |
447 |
s->dma_auto = 0;
|
448 |
break;
|
449 |
|
450 |
case 0xda: /* exit auto-init DMA after this block. 8bit */ |
451 |
s->dma_auto = 0;
|
452 |
break;
|
453 |
|
454 |
case 0xe0: |
455 |
s->needed_bytes = 1;
|
456 |
goto warn;
|
457 |
|
458 |
case 0xe1: |
459 |
dsp_out_data (s, s->ver & 0xff);
|
460 |
dsp_out_data (s, s->ver >> 8);
|
461 |
break;
|
462 |
|
463 |
case 0xe2: |
464 |
s->needed_bytes = 1;
|
465 |
goto warn;
|
466 |
|
467 |
case 0xe3: |
468 |
{ |
469 |
int i;
|
470 |
for (i = sizeof (e3) - 1; i >= 0; --i) |
471 |
dsp_out_data (s, e3[i]); |
472 |
} |
473 |
break;
|
474 |
|
475 |
case 0xe4: /* write test reg */ |
476 |
s->needed_bytes = 1;
|
477 |
break;
|
478 |
|
479 |
case 0xe7: |
480 |
dolog ("Attempt to probe for ESS (0xe7)?\n");
|
481 |
return;
|
482 |
|
483 |
case 0xe8: /* read test reg */ |
484 |
dsp_out_data (s, s->test_reg); |
485 |
break;
|
486 |
|
487 |
case 0xf2: |
488 |
case 0xf3: |
489 |
dsp_out_data (s, 0xaa);
|
490 |
s->mixer_regs[0x82] |= (cmd == 0xf2) ? 1 : 2; |
491 |
pic_set_irq (s->irq, 1);
|
492 |
break;
|
493 |
|
494 |
case 0xf9: |
495 |
s->needed_bytes = 1;
|
496 |
goto warn;
|
497 |
|
498 |
case 0xfa: |
499 |
dsp_out_data (s, 0);
|
500 |
goto warn;
|
501 |
|
502 |
case 0xfc: /* FIXME */ |
503 |
dsp_out_data (s, 0);
|
504 |
goto warn;
|
505 |
|
506 |
default:
|
507 |
dolog ("unrecognized command %#x\n", cmd);
|
508 |
return;
|
509 |
} |
510 |
} |
511 |
|
512 |
s->cmd = cmd; |
513 |
if (!s->needed_bytes)
|
514 |
ldebug ("\n");
|
515 |
return;
|
516 |
|
517 |
warn:
|
518 |
dolog ("warning: command %#x,%d is not trully understood yet\n",
|
519 |
cmd, s->needed_bytes); |
520 |
s->cmd = cmd; |
521 |
return;
|
522 |
} |
523 |
|
524 |
static uint16_t dsp_get_lohi (SB16State *s)
|
525 |
{ |
526 |
uint8_t hi = dsp_get_data (s); |
527 |
uint8_t lo = dsp_get_data (s); |
528 |
return (hi << 8) | lo; |
529 |
} |
530 |
|
531 |
static uint16_t dsp_get_hilo (SB16State *s)
|
532 |
{ |
533 |
uint8_t lo = dsp_get_data (s); |
534 |
uint8_t hi = dsp_get_data (s); |
535 |
return (hi << 8) | lo; |
536 |
} |
537 |
|
538 |
static void complete (SB16State *s) |
539 |
{ |
540 |
int d0, d1, d2;
|
541 |
ldebug ("complete command %#x, in_index %d, needed_bytes %d\n",
|
542 |
s->cmd, s->in_index, s->needed_bytes); |
543 |
|
544 |
if (s->cmd > 0xaf && s->cmd < 0xd0) { |
545 |
d2 = dsp_get_data (s); |
546 |
d1 = dsp_get_data (s); |
547 |
d0 = dsp_get_data (s); |
548 |
|
549 |
if (s->cmd & 8) { |
550 |
dolog ("ADC params cmd = %#x d0 = %d, d1 = %d, d2 = %d\n",
|
551 |
s->cmd, d0, d1, d2); |
552 |
} |
553 |
else {
|
554 |
ldebug ("cmd = %#x d0 = %d, d1 = %d, d2 = %d\n",
|
555 |
s->cmd, d0, d1, d2); |
556 |
dma_cmd (s, s->cmd, d0, d1 + (d2 << 8));
|
557 |
} |
558 |
} |
559 |
else {
|
560 |
switch (s->cmd) {
|
561 |
case 0x04: |
562 |
s->csp_mode = dsp_get_data (s); |
563 |
s->csp_reg83r = 0;
|
564 |
s->csp_reg83w = 0;
|
565 |
ldebug ("CSP command 0x04: mode=%#x\n", s->csp_mode);
|
566 |
break;
|
567 |
|
568 |
case 0x05: |
569 |
s->csp_param = dsp_get_data (s); |
570 |
s->csp_value = dsp_get_data (s); |
571 |
ldebug ("CSP command 0x05: param=%#x value=%#x\n",
|
572 |
s->csp_param, |
573 |
s->csp_value); |
574 |
break;
|
575 |
|
576 |
case 0x0e: |
577 |
d0 = dsp_get_data (s); |
578 |
d1 = dsp_get_data (s); |
579 |
ldebug ("write CSP register %d <- %#x\n", d1, d0);
|
580 |
if (d1 == 0x83) { |
581 |
ldebug ("0x83[%d] <- %#x\n", s->csp_reg83r, d0);
|
582 |
s->csp_reg83[s->csp_reg83r % 4] = d0;
|
583 |
s->csp_reg83r += 1;
|
584 |
} |
585 |
else
|
586 |
s->csp_regs[d1] = d0; |
587 |
break;
|
588 |
|
589 |
case 0x0f: |
590 |
d0 = dsp_get_data (s); |
591 |
ldebug ("read CSP register %#x -> %#x, mode=%#x\n",
|
592 |
d0, s->csp_regs[d0], s->csp_mode); |
593 |
if (d0 == 0x83) { |
594 |
ldebug ("0x83[%d] -> %#x\n",
|
595 |
s->csp_reg83w, |
596 |
s->csp_reg83[s->csp_reg83w % 4]);
|
597 |
dsp_out_data (s, s->csp_reg83[s->csp_reg83w % 4]);
|
598 |
s->csp_reg83w += 1;
|
599 |
} |
600 |
else
|
601 |
dsp_out_data (s, s->csp_regs[d0]); |
602 |
break;
|
603 |
|
604 |
case 0x10: |
605 |
d0 = dsp_get_data (s); |
606 |
dolog ("cmd 0x10 d0=%#x\n", d0);
|
607 |
break;
|
608 |
|
609 |
case 0x14: |
610 |
dma_cmd8 (s, 0, dsp_get_lohi (s));
|
611 |
/* s->can_write = 0; */
|
612 |
/* qemu_mod_timer (s->aux_ts, qemu_get_clock (vm_clock) + (ticks_per_sec * 320) / 1000000); */
|
613 |
break;
|
614 |
|
615 |
case 0x40: |
616 |
s->time_const = dsp_get_data (s); |
617 |
ldebug ("set time const %d\n", s->time_const);
|
618 |
break;
|
619 |
|
620 |
case 0x42: /* FT2 sets output freq with this, go figure */ |
621 |
dolog ("cmd 0x42 might not do what it think it should\n");
|
622 |
|
623 |
case 0x41: |
624 |
s->freq = dsp_get_hilo (s); |
625 |
ldebug ("set freq %d\n", s->freq);
|
626 |
break;
|
627 |
|
628 |
case 0x48: |
629 |
s->block_size = dsp_get_lohi (s); |
630 |
/* s->highspeed = 1; */
|
631 |
ldebug ("set dma block len %d\n", s->block_size);
|
632 |
break;
|
633 |
|
634 |
case 0x80: |
635 |
{ |
636 |
int samples, bytes;
|
637 |
int64_t ticks; |
638 |
|
639 |
if (-1 == s->freq) |
640 |
s->freq = 11025;
|
641 |
samples = dsp_get_lohi (s); |
642 |
bytes = samples << s->fmt_stereo << (s->fmt_bits == 16);
|
643 |
ticks = ticks_per_sec / (s->freq / bytes); |
644 |
if (ticks < ticks_per_sec / 1024) |
645 |
pic_set_irq (s->irq, 1);
|
646 |
else
|
647 |
qemu_mod_timer (s->aux_ts, qemu_get_clock (vm_clock) + ticks); |
648 |
ldebug ("mix silence %d %d %lld\n", samples, bytes, ticks);
|
649 |
} |
650 |
break;
|
651 |
|
652 |
case 0xe0: |
653 |
d0 = dsp_get_data (s); |
654 |
s->out_data_len = 0;
|
655 |
ldebug ("E0 data = %#x\n", d0);
|
656 |
dsp_out_data(s, ~d0); |
657 |
break;
|
658 |
|
659 |
case 0xe2: |
660 |
d0 = dsp_get_data (s); |
661 |
dolog ("E2 = %#x\n", d0);
|
662 |
break;
|
663 |
|
664 |
case 0xe4: |
665 |
s->test_reg = dsp_get_data (s); |
666 |
break;
|
667 |
|
668 |
case 0xf9: |
669 |
d0 = dsp_get_data (s); |
670 |
ldebug ("command 0xf9 with %#x\n", d0);
|
671 |
switch (d0) {
|
672 |
case 0x0e: |
673 |
dsp_out_data (s, 0xff);
|
674 |
break;
|
675 |
|
676 |
case 0x0f: |
677 |
dsp_out_data (s, 0x07);
|
678 |
break;
|
679 |
|
680 |
case 0x37: |
681 |
dsp_out_data (s, 0x38);
|
682 |
break;
|
683 |
|
684 |
default:
|
685 |
dsp_out_data (s, 0x00);
|
686 |
break;
|
687 |
} |
688 |
break;
|
689 |
|
690 |
default:
|
691 |
dolog ("complete: unrecognized command %#x\n", s->cmd);
|
692 |
return;
|
693 |
} |
694 |
} |
695 |
|
696 |
ldebug ("\n");
|
697 |
s->cmd = -1;
|
698 |
return;
|
699 |
} |
700 |
|
701 |
static void reset (SB16State *s) |
702 |
{ |
703 |
pic_set_irq (s->irq, 0);
|
704 |
if (s->dma_auto) {
|
705 |
pic_set_irq (s->irq, 1);
|
706 |
pic_set_irq (s->irq, 0);
|
707 |
} |
708 |
|
709 |
s->mixer_regs[0x82] = 0; |
710 |
s->dma_auto = 0;
|
711 |
s->in_index = 0;
|
712 |
s->out_data_len = 0;
|
713 |
s->left_till_irq = 0;
|
714 |
s->needed_bytes = 0;
|
715 |
s->block_size = -1;
|
716 |
s->nzero = 0;
|
717 |
s->highspeed = 0;
|
718 |
s->v2x6 = 0;
|
719 |
|
720 |
dsp_out_data(s, 0xaa);
|
721 |
speaker (s, 0);
|
722 |
control (s, 0);
|
723 |
} |
724 |
|
725 |
static IO_WRITE_PROTO (dsp_write)
|
726 |
{ |
727 |
SB16State *s = opaque; |
728 |
int iport;
|
729 |
|
730 |
iport = nport - s->port; |
731 |
|
732 |
ldebug ("write %#x <- %#x\n", nport, val);
|
733 |
switch (iport) {
|
734 |
case 0x06: |
735 |
switch (val) {
|
736 |
case 0x00: |
737 |
if (s->v2x6 == 1) { |
738 |
if (0 && s->highspeed) { |
739 |
s->highspeed = 0;
|
740 |
pic_set_irq (s->irq, 0);
|
741 |
control (s, 0);
|
742 |
} |
743 |
else
|
744 |
reset (s); |
745 |
} |
746 |
s->v2x6 = 0;
|
747 |
break;
|
748 |
|
749 |
case 0x01: |
750 |
case 0x03: /* FreeBSD kludge */ |
751 |
s->v2x6 = 1;
|
752 |
break;
|
753 |
|
754 |
case 0xc6: |
755 |
s->v2x6 = 0; /* Prince of Persia, csp.sys, diagnose.exe */ |
756 |
break;
|
757 |
|
758 |
case 0xb8: /* Panic */ |
759 |
reset (s); |
760 |
break;
|
761 |
|
762 |
case 0x39: |
763 |
dsp_out_data (s, 0x38);
|
764 |
reset (s); |
765 |
s->v2x6 = 0x39;
|
766 |
break;
|
767 |
|
768 |
default:
|
769 |
s->v2x6 = val; |
770 |
break;
|
771 |
} |
772 |
break;
|
773 |
|
774 |
case 0x0c: /* write data or command | write status */ |
775 |
/* if (s->highspeed) */
|
776 |
/* break; */
|
777 |
|
778 |
if (0 == s->needed_bytes) { |
779 |
command (s, val); |
780 |
#if 0
|
781 |
if (0 == s->needed_bytes) {
|
782 |
log_dsp (s);
|
783 |
}
|
784 |
#endif
|
785 |
} |
786 |
else {
|
787 |
if (s->in_index == sizeof (s->in2_data)) { |
788 |
dolog ("in data overrun\n");
|
789 |
} |
790 |
else {
|
791 |
s->in2_data[s->in_index++] = val; |
792 |
if (s->in_index == s->needed_bytes) {
|
793 |
s->needed_bytes = 0;
|
794 |
complete (s); |
795 |
#if 0
|
796 |
log_dsp (s);
|
797 |
#endif
|
798 |
} |
799 |
} |
800 |
} |
801 |
break;
|
802 |
|
803 |
default:
|
804 |
ldebug ("(nport=%#x, val=%#x)\n", nport, val);
|
805 |
break;
|
806 |
} |
807 |
} |
808 |
|
809 |
static IO_READ_PROTO (dsp_read)
|
810 |
{ |
811 |
SB16State *s = opaque; |
812 |
int iport, retval, ack = 0; |
813 |
|
814 |
iport = nport - s->port; |
815 |
|
816 |
switch (iport) {
|
817 |
case 0x06: /* reset */ |
818 |
retval = 0xff;
|
819 |
break;
|
820 |
|
821 |
case 0x0a: /* read data */ |
822 |
if (s->out_data_len) {
|
823 |
retval = s->out_data[--s->out_data_len]; |
824 |
s->last_read_byte = retval; |
825 |
} |
826 |
else {
|
827 |
dolog ("empty output buffer\n");
|
828 |
retval = s->last_read_byte; |
829 |
/* goto error; */
|
830 |
} |
831 |
break;
|
832 |
|
833 |
case 0x0c: /* 0 can write */ |
834 |
retval = s->can_write ? 0 : 0x80; |
835 |
break;
|
836 |
|
837 |
case 0x0d: /* timer interrupt clear */ |
838 |
/* dolog ("timer interrupt clear\n"); */
|
839 |
retval = 0;
|
840 |
break;
|
841 |
|
842 |
case 0x0e: /* data available status | irq 8 ack */ |
843 |
retval = (!s->out_data_len || s->highspeed) ? 0 : 0x80; |
844 |
if (s->mixer_regs[0x82] & 1) { |
845 |
ack = 1;
|
846 |
s->mixer_regs[0x82] &= 1; |
847 |
pic_set_irq (s->irq, 0);
|
848 |
} |
849 |
break;
|
850 |
|
851 |
case 0x0f: /* irq 16 ack */ |
852 |
retval = 0xff;
|
853 |
if (s->mixer_regs[0x82] & 2) { |
854 |
ack = 1;
|
855 |
s->mixer_regs[0x82] &= 2; |
856 |
pic_set_irq (s->irq, 0);
|
857 |
} |
858 |
break;
|
859 |
|
860 |
default:
|
861 |
goto error;
|
862 |
} |
863 |
|
864 |
if (!ack)
|
865 |
ldebug ("read %#x -> %#x\n", nport, retval);
|
866 |
|
867 |
return retval;
|
868 |
|
869 |
error:
|
870 |
dolog ("WARNING dsp_read %#x error\n", nport);
|
871 |
return 0xff; |
872 |
} |
873 |
|
874 |
static void reset_mixer (SB16State *s) |
875 |
{ |
876 |
int i;
|
877 |
|
878 |
memset (s->mixer_regs, 0xff, 0x7f); |
879 |
memset (s->mixer_regs + 0x83, 0xff, sizeof (s->mixer_regs) - 0x83); |
880 |
|
881 |
s->mixer_regs[0x02] = 4; /* master volume 3bits */ |
882 |
s->mixer_regs[0x06] = 4; /* MIDI volume 3bits */ |
883 |
s->mixer_regs[0x08] = 0; /* CD volume 3bits */ |
884 |
s->mixer_regs[0x0a] = 0; /* voice volume 2bits */ |
885 |
|
886 |
/* d5=input filt, d3=lowpass filt, d1,d2=input source */
|
887 |
s->mixer_regs[0x0c] = 0; |
888 |
|
889 |
/* d5=output filt, d1=stereo switch */
|
890 |
s->mixer_regs[0x0e] = 0; |
891 |
|
892 |
/* voice volume L d5,d7, R d1,d3 */
|
893 |
s->mixer_regs[0x04] = (4 << 5) | (4 << 1); |
894 |
/* master ... */
|
895 |
s->mixer_regs[0x22] = (4 << 5) | (4 << 1); |
896 |
/* MIDI ... */
|
897 |
s->mixer_regs[0x26] = (4 << 5) | (4 << 1); |
898 |
|
899 |
for (i = 0x30; i < 0x48; i++) { |
900 |
s->mixer_regs[i] = 0x20;
|
901 |
} |
902 |
} |
903 |
|
904 |
static IO_WRITE_PROTO(mixer_write_indexb)
|
905 |
{ |
906 |
SB16State *s = opaque; |
907 |
s->mixer_nreg = val; |
908 |
} |
909 |
|
910 |
static IO_WRITE_PROTO(mixer_write_datab)
|
911 |
{ |
912 |
SB16State *s = opaque; |
913 |
|
914 |
ldebug ("mixer_write [%#x] <- %#x\n", s->mixer_nreg, val);
|
915 |
if (s->mixer_nreg > sizeof (s->mixer_regs)) |
916 |
return;
|
917 |
|
918 |
switch (s->mixer_nreg) {
|
919 |
case 0x00: |
920 |
reset_mixer (s); |
921 |
break;
|
922 |
|
923 |
case 0x80: |
924 |
{ |
925 |
int irq = irq_of_magic (val);
|
926 |
ldebug ("setting irq to %d (val=%#x)\n", irq, val);
|
927 |
if (irq > 0) |
928 |
s->irq = irq; |
929 |
} |
930 |
break;
|
931 |
|
932 |
case 0x81: |
933 |
{ |
934 |
int dma, hdma;
|
935 |
|
936 |
dma = lsbindex (val & 0xf);
|
937 |
hdma = lsbindex (val & 0xf0);
|
938 |
dolog ("attempt to set DMA register 8bit %d, 16bit %d (val=%#x)\n",
|
939 |
dma, hdma, val); |
940 |
#if 0
|
941 |
s->dma = dma;
|
942 |
s->hdma = hdma;
|
943 |
#endif
|
944 |
} |
945 |
break;
|
946 |
|
947 |
case 0x82: |
948 |
dolog ("attempt to write into IRQ status register (val=%#x)\n",
|
949 |
val); |
950 |
return;
|
951 |
|
952 |
default:
|
953 |
if (s->mixer_nreg >= 0x80) |
954 |
dolog ("attempt to write mixer[%#x] <- %#x\n", s->mixer_nreg, val);
|
955 |
break;
|
956 |
} |
957 |
|
958 |
s->mixer_regs[s->mixer_nreg] = val; |
959 |
} |
960 |
|
961 |
static IO_WRITE_PROTO(mixer_write_indexw)
|
962 |
{ |
963 |
mixer_write_indexb (opaque, nport, val & 0xff);
|
964 |
mixer_write_datab (opaque, nport, (val >> 8) & 0xff); |
965 |
} |
966 |
|
967 |
static IO_READ_PROTO(mixer_read)
|
968 |
{ |
969 |
SB16State *s = opaque; |
970 |
ldebug ("mixer_read[%#x] -> %#x\n",
|
971 |
s->mixer_nreg, s->mixer_regs[s->mixer_nreg]); |
972 |
return s->mixer_regs[s->mixer_nreg];
|
973 |
} |
974 |
|
975 |
static int write_audio (SB16State *s, int nchan, int dma_pos, |
976 |
int dma_len, int len) |
977 |
{ |
978 |
int temp, net;
|
979 |
uint8_t tmpbuf[4096];
|
980 |
|
981 |
temp = len; |
982 |
net = 0;
|
983 |
|
984 |
while (temp) {
|
985 |
int left = dma_len - dma_pos;
|
986 |
int to_copy, copied;
|
987 |
|
988 |
to_copy = audio_MIN (temp, left); |
989 |
if (to_copy > sizeof(tmpbuf)) |
990 |
to_copy = sizeof(tmpbuf);
|
991 |
|
992 |
copied = DMA_read_memory (nchan, tmpbuf, dma_pos, to_copy); |
993 |
copied = AUD_write (s->voice, tmpbuf, copied); |
994 |
|
995 |
temp -= copied; |
996 |
dma_pos = (dma_pos + copied) % dma_len; |
997 |
net += copied; |
998 |
|
999 |
if (!copied)
|
1000 |
break;
|
1001 |
} |
1002 |
|
1003 |
return net;
|
1004 |
} |
1005 |
|
1006 |
static int SB_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len) |
1007 |
{ |
1008 |
SB16State *s = opaque; |
1009 |
int free, rfree, till, copy, written, elapsed;
|
1010 |
|
1011 |
if (s->left_till_irq < 0) { |
1012 |
s->left_till_irq = s->block_size; |
1013 |
} |
1014 |
|
1015 |
elapsed = AUD_calc_elapsed (s->voice); |
1016 |
free = elapsed;/* AUD_get_free (s->voice); */
|
1017 |
rfree = free; |
1018 |
free = audio_MIN (free, elapsed) & ~s->align; |
1019 |
|
1020 |
if ((free <= 0) || !dma_len) { |
1021 |
return dma_pos;
|
1022 |
} |
1023 |
|
1024 |
copy = free; |
1025 |
till = s->left_till_irq; |
1026 |
|
1027 |
#ifdef DEBUG_SB16_MOST
|
1028 |
dolog ("pos:%06d free:%d,%d till:%d len:%d\n",
|
1029 |
dma_pos, free, AUD_get_free (s->voice), till, dma_len); |
1030 |
#endif
|
1031 |
|
1032 |
if (till <= copy) {
|
1033 |
if (0 == s->dma_auto) { |
1034 |
copy = till; |
1035 |
} |
1036 |
} |
1037 |
|
1038 |
written = write_audio (s, nchan, dma_pos, dma_len, copy); |
1039 |
dma_pos = (dma_pos + written) % dma_len; |
1040 |
s->left_till_irq -= written; |
1041 |
|
1042 |
if (s->left_till_irq <= 0) { |
1043 |
s->mixer_regs[0x82] |= (nchan & 4) ? 2 : 1; |
1044 |
pic_set_irq (s->irq, 1);
|
1045 |
if (0 == s->dma_auto) { |
1046 |
control (s, 0);
|
1047 |
speaker (s, 0);
|
1048 |
} |
1049 |
} |
1050 |
|
1051 |
#ifdef DEBUG_SB16_MOST
|
1052 |
ldebug ("pos %5d free %5d size %5d till % 5d copy %5d dma size %5d\n",
|
1053 |
dma_pos, free, dma_len, s->left_till_irq, copy, s->block_size); |
1054 |
#endif
|
1055 |
|
1056 |
while (s->left_till_irq <= 0) { |
1057 |
s->left_till_irq = s->block_size + s->left_till_irq; |
1058 |
} |
1059 |
|
1060 |
AUD_adjust (s->voice, written); |
1061 |
return dma_pos;
|
1062 |
} |
1063 |
|
1064 |
void SB_timer (void *opaque) |
1065 |
{ |
1066 |
SB16State *s = opaque; |
1067 |
AUD_run (); |
1068 |
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + 1);
|
1069 |
} |
1070 |
|
1071 |
static void SB_save (QEMUFile *f, void *opaque) |
1072 |
{ |
1073 |
SB16State *s = opaque; |
1074 |
|
1075 |
qemu_put_be32s (f, &s->irq); |
1076 |
qemu_put_be32s (f, &s->dma); |
1077 |
qemu_put_be32s (f, &s->hdma); |
1078 |
qemu_put_be32s (f, &s->port); |
1079 |
qemu_put_be32s (f, &s->ver); |
1080 |
qemu_put_be32s (f, &s->in_index); |
1081 |
qemu_put_be32s (f, &s->out_data_len); |
1082 |
qemu_put_be32s (f, &s->fmt_stereo); |
1083 |
qemu_put_be32s (f, &s->fmt_signed); |
1084 |
qemu_put_be32s (f, &s->fmt_bits); |
1085 |
qemu_put_be32s (f, &s->fmt); |
1086 |
qemu_put_be32s (f, &s->dma_auto); |
1087 |
qemu_put_be32s (f, &s->block_size); |
1088 |
qemu_put_be32s (f, &s->fifo); |
1089 |
qemu_put_be32s (f, &s->freq); |
1090 |
qemu_put_be32s (f, &s->time_const); |
1091 |
qemu_put_be32s (f, &s->speaker); |
1092 |
qemu_put_be32s (f, &s->needed_bytes); |
1093 |
qemu_put_be32s (f, &s->cmd); |
1094 |
qemu_put_be32s (f, &s->use_hdma); |
1095 |
qemu_put_be32s (f, &s->highspeed); |
1096 |
qemu_put_be32s (f, &s->can_write); |
1097 |
qemu_put_be32s (f, &s->v2x6); |
1098 |
|
1099 |
qemu_put_8s (f, &s->csp_param); |
1100 |
qemu_put_8s (f, &s->csp_value); |
1101 |
qemu_put_8s (f, &s->csp_mode); |
1102 |
qemu_put_8s (f, &s->csp_param); |
1103 |
qemu_put_buffer (f, s->csp_regs, 256);
|
1104 |
qemu_put_8s (f, &s->csp_index); |
1105 |
qemu_put_buffer (f, s->csp_reg83, 4);
|
1106 |
qemu_put_be32s (f, &s->csp_reg83r); |
1107 |
qemu_put_be32s (f, &s->csp_reg83w); |
1108 |
|
1109 |
qemu_put_buffer (f, s->in2_data, sizeof (s->in2_data));
|
1110 |
qemu_put_buffer (f, s->out_data, sizeof (s->out_data));
|
1111 |
qemu_put_8s (f, &s->test_reg); |
1112 |
qemu_put_8s (f, &s->last_read_byte); |
1113 |
|
1114 |
qemu_put_be32s (f, &s->nzero); |
1115 |
qemu_put_be32s (f, &s->left_till_irq); |
1116 |
qemu_put_be32s (f, &s->dma_running); |
1117 |
qemu_put_be32s (f, &s->bytes_per_second); |
1118 |
qemu_put_be32s (f, &s->align); |
1119 |
|
1120 |
qemu_put_be32s (f, &s->mixer_nreg); |
1121 |
qemu_put_buffer (f, s->mixer_regs, 256);
|
1122 |
} |
1123 |
|
1124 |
static int SB_load (QEMUFile *f, void *opaque, int version_id) |
1125 |
{ |
1126 |
SB16State *s = opaque; |
1127 |
|
1128 |
if (version_id != 1) |
1129 |
return -EINVAL;
|
1130 |
|
1131 |
qemu_get_be32s (f, &s->irq); |
1132 |
qemu_get_be32s (f, &s->dma); |
1133 |
qemu_get_be32s (f, &s->hdma); |
1134 |
qemu_get_be32s (f, &s->port); |
1135 |
qemu_get_be32s (f, &s->ver); |
1136 |
qemu_get_be32s (f, &s->in_index); |
1137 |
qemu_get_be32s (f, &s->out_data_len); |
1138 |
qemu_get_be32s (f, &s->fmt_stereo); |
1139 |
qemu_get_be32s (f, &s->fmt_signed); |
1140 |
qemu_get_be32s (f, &s->fmt_bits); |
1141 |
qemu_get_be32s (f, &s->fmt); |
1142 |
qemu_get_be32s (f, &s->dma_auto); |
1143 |
qemu_get_be32s (f, &s->block_size); |
1144 |
qemu_get_be32s (f, &s->fifo); |
1145 |
qemu_get_be32s (f, &s->freq); |
1146 |
qemu_get_be32s (f, &s->time_const); |
1147 |
qemu_get_be32s (f, &s->speaker); |
1148 |
qemu_get_be32s (f, &s->needed_bytes); |
1149 |
qemu_get_be32s (f, &s->cmd); |
1150 |
qemu_get_be32s (f, &s->use_hdma); |
1151 |
qemu_get_be32s (f, &s->highspeed); |
1152 |
qemu_get_be32s (f, &s->can_write); |
1153 |
qemu_get_be32s (f, &s->v2x6); |
1154 |
|
1155 |
qemu_get_8s (f, &s->csp_param); |
1156 |
qemu_get_8s (f, &s->csp_value); |
1157 |
qemu_get_8s (f, &s->csp_mode); |
1158 |
qemu_get_8s (f, &s->csp_param); |
1159 |
qemu_get_buffer (f, s->csp_regs, 256);
|
1160 |
qemu_get_8s (f, &s->csp_index); |
1161 |
qemu_get_buffer (f, s->csp_reg83, 4);
|
1162 |
qemu_get_be32s (f, &s->csp_reg83r); |
1163 |
qemu_get_be32s (f, &s->csp_reg83w); |
1164 |
|
1165 |
qemu_get_buffer (f, s->in2_data, sizeof (s->in2_data));
|
1166 |
qemu_get_buffer (f, s->out_data, sizeof (s->out_data));
|
1167 |
qemu_get_8s (f, &s->test_reg); |
1168 |
qemu_get_8s (f, &s->last_read_byte); |
1169 |
|
1170 |
qemu_get_be32s (f, &s->nzero); |
1171 |
qemu_get_be32s (f, &s->left_till_irq); |
1172 |
qemu_get_be32s (f, &s->dma_running); |
1173 |
qemu_get_be32s (f, &s->bytes_per_second); |
1174 |
qemu_get_be32s (f, &s->align); |
1175 |
|
1176 |
qemu_get_be32s (f, &s->mixer_nreg); |
1177 |
qemu_get_buffer (f, s->mixer_regs, 256);
|
1178 |
|
1179 |
if (s->voice) {
|
1180 |
AUD_close (s->voice); |
1181 |
s->voice = NULL;
|
1182 |
} |
1183 |
|
1184 |
if (s->dma_running) {
|
1185 |
if (s->freq)
|
1186 |
s->voice = AUD_open (s->voice, "sb16", s->freq,
|
1187 |
1 << s->fmt_stereo, s->fmt);
|
1188 |
|
1189 |
control (s, 1);
|
1190 |
speaker (s, s->speaker); |
1191 |
} |
1192 |
return 0; |
1193 |
} |
1194 |
|
1195 |
void SB16_init (void) |
1196 |
{ |
1197 |
SB16State *s = &dsp; |
1198 |
int i;
|
1199 |
static const uint8_t dsp_write_ports[] = {0x6, 0xc}; |
1200 |
static const uint8_t dsp_read_ports[] = {0x6, 0xa, 0xc, 0xd, 0xe, 0xf}; |
1201 |
|
1202 |
s->ts = qemu_new_timer (vm_clock, SB_timer, s); |
1203 |
if (!s->ts)
|
1204 |
return;
|
1205 |
|
1206 |
s->irq = conf.irq; |
1207 |
s->dma = conf.dma; |
1208 |
s->hdma = conf.hdma; |
1209 |
s->port = conf.port; |
1210 |
s->ver = conf.ver_lo | (conf.ver_hi << 8);
|
1211 |
|
1212 |
s->mixer_regs[0x80] = magic_of_irq (s->irq);
|
1213 |
s->mixer_regs[0x81] = (1 << s->dma) | (1 << s->hdma); |
1214 |
s->mixer_regs[0x82] = 2 << 5; |
1215 |
|
1216 |
s->csp_regs[5] = 1; |
1217 |
s->csp_regs[9] = 0xf8; |
1218 |
|
1219 |
reset_mixer (s); |
1220 |
s->aux_ts = qemu_new_timer (vm_clock, aux_timer, s); |
1221 |
if (!s->aux_ts)
|
1222 |
return;
|
1223 |
|
1224 |
for (i = 0; i < LENOFA (dsp_write_ports); i++) { |
1225 |
register_ioport_write (s->port + dsp_write_ports[i], 1, 1, dsp_write, s); |
1226 |
} |
1227 |
|
1228 |
for (i = 0; i < LENOFA (dsp_read_ports); i++) { |
1229 |
register_ioport_read (s->port + dsp_read_ports[i], 1, 1, dsp_read, s); |
1230 |
} |
1231 |
|
1232 |
register_ioport_write (s->port + 0x4, 1, 1, mixer_write_indexb, s); |
1233 |
register_ioport_write (s->port + 0x4, 1, 2, mixer_write_indexw, s); |
1234 |
register_ioport_read (s->port + 0x5, 1, 1, mixer_read, s); |
1235 |
register_ioport_write (s->port + 0x5, 1, 1, mixer_write_datab, s); |
1236 |
|
1237 |
DMA_register_channel (s->hdma, SB_read_DMA, s); |
1238 |
DMA_register_channel (s->dma, SB_read_DMA, s); |
1239 |
s->can_write = 1;
|
1240 |
|
1241 |
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + 1);
|
1242 |
register_savevm ("sb16", 0, 1, SB_save, SB_load, s); |
1243 |
} |