]>
Commit | Line | Data |
---|---|---|
27503323 FB |
1 | /* |
2 | * QEMU Soundblaster 16 emulation | |
3 | * | |
4 | * Copyright (c) 2003 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 <stdio.h> | |
25 | #include <stdlib.h> | |
26 | #include <inttypes.h> | |
27 | ||
28 | #include "vl.h" | |
29 | ||
30 | #define MIN(a, b) ((a)>(b)?(b):(a)) | |
31 | #define LENOFA(a) ((int) (sizeof(a)/sizeof(a[0]))) | |
32 | ||
33 | #define DEREF(x) (void)x | |
34 | #define log(...) fprintf (stderr, "sb16: " __VA_ARGS__) | |
35 | #define Fail(...) do { \ | |
36 | fprintf (stderr, "sb16: " __VA_ARGS__); \ | |
37 | abort (); \ | |
38 | } while (0) | |
39 | ||
40 | #ifdef DEBUG_SB16 | |
41 | #define lwarn(...) fprintf (stderr, "sb16: " __VA_ARGS__) | |
42 | #define linfo(...) fprintf (stderr, "sb16: " __VA_ARGS__) | |
43 | #define ldebug(...) fprintf (stderr, "sb16: " __VA_ARGS__) | |
44 | #else | |
45 | #define lwarn(...) | |
46 | #define linfo(...) | |
47 | #define ldebug(...) | |
48 | #endif | |
49 | ||
50 | #define IO_READ_PROTO(name) \ | |
7138fcfb | 51 | uint32_t name (struct CPUState *env, uint32_t nport) |
27503323 | 52 | #define IO_WRITE_PROTO(name) \ |
7138fcfb | 53 | void name (struct CPUState *env, uint32_t nport, uint32_t val) |
27503323 FB |
54 | |
55 | static struct { | |
56 | int ver_lo; | |
57 | int ver_hi; | |
58 | int irq; | |
59 | int dma; | |
60 | int hdma; | |
61 | int port; | |
62 | int mix_block; | |
63 | } sb = {4, 5, 5, 1, 5, 0x220, -1}; | |
64 | ||
65 | static int mix_block, noirq; | |
66 | ||
67 | static struct mixer { | |
68 | int nreg; | |
69 | uint8_t regs[0x83]; | |
70 | } mixer; | |
71 | ||
72 | static struct dsp { | |
73 | int in_index; | |
74 | int out_data_len; | |
75 | int fmt_stereo; | |
76 | int fmt_signed; | |
77 | int fmt_bits; | |
78 | int dma_auto; | |
79 | int dma_buffer_size; | |
80 | int fifo; | |
81 | int freq; | |
82 | int time_const; | |
83 | int speaker; | |
84 | int needed_bytes; | |
85 | int cmd; | |
86 | int dma_pos; | |
87 | int use_hdma; | |
88 | ||
89 | int v2x6; | |
90 | ||
91 | uint8_t in_data[10]; | |
92 | uint8_t out_data[10]; | |
93 | ||
94 | int left_till_irq; | |
95 | } dsp; | |
96 | ||
97 | #define nocmd ~0 | |
98 | ||
99 | static void log_dsp (const char *cap) | |
100 | { | |
101 | DEREF (cap); | |
102 | ||
103 | linfo ("%c:%c:%d:%c:dmabuf=%d:pos=%d:freq=%d:timeconst=%d:speaker=%d\n", | |
104 | dsp.fmt_stereo ? 'S' : 'M', | |
105 | dsp.fmt_signed ? 'S' : 'U', | |
106 | dsp.fmt_bits, | |
107 | dsp.dma_auto ? 'a' : 's', | |
108 | dsp.dma_buffer_size, | |
109 | dsp.dma_pos, | |
110 | dsp.freq, | |
111 | dsp.time_const, | |
112 | dsp.speaker); | |
113 | } | |
114 | ||
115 | static void control (int hold) | |
116 | { | |
117 | linfo ("%d high %d\n", hold, dsp.use_hdma); | |
118 | if (hold) { | |
119 | if (dsp.use_hdma) | |
120 | DMA_hold_DREQ (sb.hdma); | |
121 | else | |
122 | DMA_hold_DREQ (sb.dma); | |
123 | } | |
124 | else { | |
125 | if (dsp.use_hdma) | |
126 | DMA_release_DREQ (sb.hdma); | |
127 | else | |
128 | DMA_release_DREQ (sb.dma); | |
129 | } | |
130 | } | |
131 | ||
132 | static void dma_cmd (uint8_t cmd, uint8_t d0, int dma_len) | |
133 | { | |
134 | int bps; | |
135 | audfmt_e fmt; | |
136 | ||
137 | dsp.use_hdma = cmd < 0xc0; | |
138 | dsp.fifo = (cmd >> 1) & 1; | |
139 | dsp.dma_auto = (cmd >> 2) & 1; | |
140 | ||
141 | switch (cmd >> 4) { | |
142 | case 11: | |
143 | dsp.fmt_bits = 16; | |
144 | break; | |
145 | ||
146 | case 12: | |
147 | dsp.fmt_bits = 8; | |
148 | break; | |
149 | } | |
150 | ||
151 | dsp.fmt_signed = (d0 >> 4) & 1; | |
152 | dsp.fmt_stereo = (d0 >> 5) & 1; | |
153 | ||
154 | if (-1 != dsp.time_const) { | |
155 | int tmp; | |
156 | ||
157 | tmp = 256 - dsp.time_const; | |
158 | dsp.freq = (1000000 + (tmp / 2)) / tmp; | |
159 | } | |
160 | bps = 1 << (16 == dsp.fmt_bits); | |
161 | ||
162 | if (-1 != dma_len) | |
163 | dsp.dma_buffer_size = (dma_len + 1) * bps; | |
164 | ||
165 | linfo ("frequency %d, stereo %d, signed %d, bits %d, size %d, auto %d\n", | |
166 | dsp.freq, dsp.fmt_stereo, dsp.fmt_signed, dsp.fmt_bits, | |
167 | dsp.dma_buffer_size, dsp.dma_auto); | |
168 | ||
169 | if (16 == dsp.fmt_bits) { | |
170 | if (dsp.fmt_signed) { | |
171 | fmt = AUD_FMT_S16; | |
172 | } | |
173 | else { | |
174 | fmt = AUD_FMT_U16; | |
175 | } | |
176 | } | |
177 | else { | |
178 | if (dsp.fmt_signed) { | |
179 | fmt = AUD_FMT_S8; | |
180 | } | |
181 | else { | |
182 | fmt = AUD_FMT_U8; | |
183 | } | |
184 | } | |
185 | ||
186 | dsp.dma_pos = 0; | |
187 | dsp.left_till_irq = dsp.dma_buffer_size; | |
188 | ||
189 | if (sb.mix_block) { | |
190 | mix_block = sb.mix_block; | |
191 | } | |
192 | else { | |
193 | int align; | |
194 | ||
195 | align = bps << dsp.fmt_stereo; | |
196 | mix_block = ((dsp.freq * align) / 100) & ~(align - 1); | |
197 | } | |
198 | ||
199 | AUD_reset (dsp.freq, 1 << dsp.fmt_stereo, fmt); | |
200 | control (1); | |
201 | dsp.speaker = 1; | |
202 | } | |
203 | ||
204 | static void command (uint8_t cmd) | |
205 | { | |
206 | char *msg; | |
207 | ||
208 | msg = (char *)-1; | |
209 | ||
210 | linfo ("%#x\n", cmd); | |
211 | ||
212 | if (cmd > 0xaf && cmd < 0xd0) { | |
213 | if (cmd & 8) | |
214 | goto error; | |
215 | ||
216 | switch (cmd >> 4) { | |
217 | case 11: | |
218 | case 12: | |
219 | break; | |
220 | default: | |
221 | msg = "wrong bits"; | |
222 | goto error; | |
223 | } | |
224 | dsp.needed_bytes = 3; | |
225 | } | |
226 | else { | |
227 | switch (cmd) { | |
228 | case 0x10: | |
229 | dsp.needed_bytes = 1; | |
230 | break; | |
231 | ||
232 | case 0x14: | |
233 | dsp.needed_bytes = 2; | |
234 | dsp.dma_buffer_size = 0; | |
235 | break; | |
236 | ||
237 | case 0x20: | |
238 | dsp.out_data[dsp.out_data_len++] = 0xff; | |
239 | break; | |
240 | ||
241 | case 0x35: | |
242 | lwarn ("MIDI commands not implemented\n"); | |
243 | break; | |
244 | ||
245 | case 0x40: | |
246 | dsp.freq = -1; | |
247 | dsp.time_const = -1; | |
248 | dsp.needed_bytes = 1; | |
249 | break; | |
250 | ||
251 | case 0x41: | |
252 | case 0x42: | |
253 | dsp.freq = -1; | |
254 | dsp.time_const = -1; | |
255 | dsp.needed_bytes = 2; | |
256 | break; | |
257 | ||
258 | case 0x47: /* Continue Auto-Initialize DMA 16bit */ | |
259 | break; | |
260 | ||
261 | case 0x48: | |
262 | dsp.needed_bytes = 2; | |
263 | break; | |
264 | ||
265 | case 0x27: /* ????????? */ | |
266 | case 0x4e: | |
267 | return; | |
268 | ||
269 | case 0x80: | |
270 | cmd = nocmd; | |
271 | break; | |
272 | ||
273 | case 0x90: | |
274 | case 0x91: | |
275 | { | |
276 | uint8_t d0; | |
277 | ||
278 | d0 = 4; | |
279 | if (dsp.fmt_signed) d0 |= 16; | |
280 | if (dsp.fmt_stereo) d0 |= 32; | |
281 | dma_cmd (cmd == 0x90 ? 0xc4 : 0xc0, d0, -1); | |
282 | cmd = nocmd; | |
283 | break; | |
284 | } | |
285 | ||
286 | case 0xd0: /* XXX */ | |
287 | control (0); | |
288 | return; | |
289 | ||
290 | case 0xd1: | |
291 | dsp.speaker = 1; | |
292 | break; | |
293 | ||
294 | case 0xd3: | |
295 | dsp.speaker = 0; | |
296 | return; | |
297 | ||
298 | case 0xd4: | |
299 | control (1); | |
300 | break; | |
301 | ||
302 | case 0xd5: | |
303 | control (0); | |
304 | break; | |
305 | ||
306 | case 0xd6: | |
307 | control (1); | |
308 | break; | |
309 | ||
310 | case 0xd9: | |
311 | control (0); | |
312 | dsp.dma_auto = 0; | |
313 | return; | |
314 | ||
315 | case 0xda: | |
316 | control (0); | |
317 | dsp.dma_auto = 0; | |
318 | break; | |
319 | ||
320 | case 0xe0: | |
321 | dsp.needed_bytes = 1; | |
322 | break; | |
323 | ||
324 | case 0xe1: | |
325 | dsp.out_data[dsp.out_data_len++] = sb.ver_lo; | |
326 | dsp.out_data[dsp.out_data_len++] = sb.ver_hi; | |
327 | return; | |
328 | ||
329 | case 0xf2: | |
330 | dsp.out_data[dsp.out_data_len++] = 0xaa; | |
331 | mixer.regs[0x82] |= 1; | |
332 | pic_set_irq (sb.irq, 1); | |
333 | return; | |
334 | ||
335 | default: | |
336 | msg = "is unknown"; | |
337 | goto error; | |
338 | } | |
339 | } | |
340 | dsp.cmd = cmd; | |
341 | return; | |
342 | ||
343 | error: | |
344 | Fail ("%#x %s", cmd, msg); | |
345 | return; | |
346 | } | |
347 | ||
348 | static void complete (void) | |
349 | { | |
350 | linfo ("complete command %#x, in_index %d, needed_bytes %d\n", | |
351 | dsp.cmd, dsp.in_index, dsp.needed_bytes); | |
352 | ||
353 | if (dsp.cmd > 0xaf && dsp.cmd < 0xd0) { | |
354 | int d0, d1, d2; | |
355 | ||
356 | d0 = dsp.in_data[0]; | |
357 | d1 = dsp.in_data[1]; | |
358 | d2 = dsp.in_data[2]; | |
359 | ||
360 | ldebug ("d0 = %d, d1 = %d, d2 = %d\n", | |
361 | d0, d1, d2); | |
362 | dma_cmd (dsp.cmd, d0, d1 + (d2 << 8)); | |
363 | } | |
364 | else { | |
365 | switch (dsp.cmd) { | |
366 | ||
367 | case 0x10: | |
368 | break; | |
369 | ||
370 | case 0x14: | |
371 | { | |
372 | int d0, d1; | |
373 | int save_left; | |
374 | int save_pos; | |
375 | ||
376 | d0 = dsp.in_data[0]; | |
377 | d1 = dsp.in_data[1]; | |
378 | ||
379 | save_left = dsp.left_till_irq; | |
380 | save_pos = dsp.dma_pos; | |
381 | dma_cmd (0xc0, 0, d0 + (d1 << 8)); | |
382 | dsp.left_till_irq = save_left; | |
383 | dsp.dma_pos = save_pos; | |
384 | ||
385 | linfo ("set buffer size data[%d, %d] %d pos %d\n", | |
386 | d0, d1, dsp.dma_buffer_size, dsp.dma_pos); | |
387 | break; | |
388 | } | |
389 | ||
390 | case 0x40: | |
391 | dsp.time_const = dsp.in_data[0]; | |
392 | linfo ("set time const %d\n", dsp.time_const); | |
393 | break; | |
394 | ||
395 | case 0x41: | |
396 | case 0x42: | |
397 | dsp.freq = dsp.in_data[1] + (dsp.in_data[0] << 8); | |
398 | linfo ("set freq %#x, %#x = %d\n", | |
399 | dsp.in_data[1], dsp.in_data[0], dsp.freq); | |
400 | break; | |
401 | ||
402 | case 0x48: | |
403 | dsp.dma_buffer_size = dsp.in_data[1] + (dsp.in_data[0] << 8); | |
404 | linfo ("set dma len %#x, %#x = %d\n", | |
405 | dsp.in_data[1], dsp.in_data[0], dsp.dma_buffer_size); | |
406 | break; | |
407 | ||
408 | case 0xe0: | |
409 | dsp.out_data_len = 1; | |
410 | linfo ("data = %#x\n", dsp.in_data[0]); | |
411 | dsp.out_data[0] = dsp.in_data[0] ^ 0xff; | |
412 | break; | |
413 | ||
414 | default: | |
415 | goto error; | |
416 | } | |
417 | } | |
418 | ||
419 | dsp.cmd = -1; | |
420 | return; | |
421 | ||
422 | error: | |
423 | Fail ("unrecognized command %#x", dsp.cmd); | |
424 | } | |
425 | ||
426 | static IO_WRITE_PROTO (dsp_write) | |
427 | { | |
428 | int iport; | |
429 | ||
430 | iport = nport - sb.port; | |
431 | ||
432 | switch (iport) { | |
433 | case 0x6: | |
434 | if (0 == val) | |
435 | dsp.v2x6 = 0; | |
436 | else if ((1 == val) && (0 == dsp.v2x6)) { | |
437 | dsp.v2x6 = 1; | |
438 | dsp.out_data[dsp.out_data_len++] = 0xaa; | |
439 | } | |
440 | else | |
441 | dsp.v2x6 = ~0; | |
442 | break; | |
443 | ||
444 | case 0xc: /* write data or command | write status */ | |
445 | if (0 == dsp.needed_bytes) { | |
446 | command (val); | |
447 | if (0 == dsp.needed_bytes) { | |
448 | log_dsp (__func__); | |
449 | } | |
450 | } | |
451 | else { | |
452 | dsp.in_data[dsp.in_index++] = val; | |
453 | if (dsp.in_index == dsp.needed_bytes) { | |
454 | dsp.needed_bytes = 0; | |
455 | dsp.in_index = 0; | |
456 | complete (); | |
457 | log_dsp (__func__); | |
458 | } | |
459 | } | |
460 | break; | |
461 | ||
462 | default: | |
463 | Fail ("(nport=%#x, val=%#x)", nport, val); | |
464 | } | |
465 | } | |
466 | ||
467 | static IO_READ_PROTO (dsp_read) | |
468 | { | |
469 | char *msg; | |
470 | int iport, retval; | |
471 | ||
472 | msg = (char *) -1; | |
473 | iport = nport - sb.port; | |
474 | ||
475 | switch (iport) { | |
476 | ||
477 | case 0x6: /* reset */ | |
478 | return 0; | |
479 | ||
480 | case 0xa: /* read data */ | |
481 | if (dsp.out_data_len) { | |
482 | retval = dsp.out_data[--dsp.out_data_len]; | |
483 | } | |
484 | else { | |
485 | #if 1 | |
486 | lwarn ("empty output buffer\n"); | |
487 | retval = 0; | |
488 | #else | |
489 | msg = "empty output buffer"; | |
490 | goto error; | |
491 | #endif | |
492 | } | |
493 | break; | |
494 | ||
495 | case 0xc: /* 0 can write */ | |
496 | retval = 0; | |
497 | break; | |
498 | ||
499 | case 0xd: /* timer interrupt clear */ | |
500 | goto error; | |
501 | ||
502 | case 0xe: /* data available status | irq 8 ack */ | |
503 | retval = (0 == dsp.out_data_len) ? 0 : 0x80; | |
504 | break; | |
505 | ||
506 | case 0xf: /* irq 16 ack */ | |
507 | retval = 0xff; | |
508 | mixer.regs[0x82] &= ~2; | |
509 | ldebug ("16 ack\n"); | |
510 | break; | |
511 | ||
512 | default: | |
513 | goto error; | |
514 | } | |
515 | ||
516 | if ((0xc != iport) && (0xe != iport)) { | |
517 | ldebug ("(nport=%#x, size=%d) iport %#x = %#x\n", | |
518 | nport, size, iport, retval); | |
519 | } | |
520 | ||
521 | return retval; | |
522 | ||
523 | error: | |
524 | Fail ("(nport=%#x) %s", nport, msg); | |
525 | } | |
526 | ||
527 | static IO_WRITE_PROTO(mixer_write_indexb) | |
528 | { | |
529 | mixer.nreg = val & 0xff; | |
530 | } | |
531 | ||
532 | static IO_WRITE_PROTO(mixer_write_datab) | |
533 | { | |
534 | mixer.regs[mixer.nreg] = val; | |
535 | } | |
536 | ||
537 | static IO_WRITE_PROTO(mixer_write_indexw) | |
538 | { | |
539 | mixer_write_indexb (env, nport, val & 0xff); | |
540 | mixer_write_datab (env, nport, (val >> 8) & 0xff); | |
541 | } | |
542 | ||
543 | static IO_READ_PROTO(mixer_read) | |
544 | { | |
545 | return mixer.regs[mixer.nreg]; | |
546 | } | |
547 | ||
548 | void SB16_run (void) | |
549 | { | |
550 | if (0 == dsp.speaker) | |
551 | return; | |
552 | ||
553 | AUD_run (); | |
554 | } | |
555 | ||
556 | static int write_audio (uint32_t addr, int len, int size) | |
557 | { | |
558 | int temp, net; | |
559 | ||
560 | temp = size; | |
561 | ||
562 | net = 0; | |
563 | ||
564 | while (temp) { | |
565 | int left_till_end; | |
566 | int to_copy; | |
567 | int copied; | |
568 | ||
569 | left_till_end = len - dsp.dma_pos; | |
570 | ||
571 | to_copy = MIN (temp, left_till_end); | |
572 | ||
573 | copied = AUD_write ((void *) (addr + dsp.dma_pos), to_copy); | |
574 | ||
575 | temp -= copied; | |
576 | dsp.dma_pos += copied; | |
577 | ||
578 | if (dsp.dma_pos == len) { | |
579 | dsp.dma_pos = 0; | |
580 | } | |
581 | ||
582 | net += copied; | |
583 | ||
584 | if (copied != to_copy) | |
585 | return net; | |
586 | } | |
587 | ||
588 | return net; | |
589 | } | |
590 | ||
591 | static int SB_read_DMA (uint32_t addr, int size, int *_irq) | |
592 | { | |
593 | int free, till, copy, written; | |
594 | ||
595 | if (0 == dsp.speaker) | |
596 | return 0; | |
597 | ||
598 | if (dsp.left_till_irq < 0) { | |
599 | dsp.left_till_irq += dsp.dma_buffer_size; | |
600 | return dsp.dma_pos; | |
601 | } | |
602 | ||
603 | free = AUD_get_free (); | |
604 | ||
605 | if ((free <= 0) || (0 == size)) { | |
606 | return dsp.dma_pos; | |
607 | } | |
608 | ||
609 | if (mix_block > 0) { | |
610 | copy = MIN (free, mix_block); | |
611 | } | |
612 | else { | |
613 | copy = free; | |
614 | } | |
615 | ||
616 | till = dsp.left_till_irq; | |
617 | ||
618 | ldebug ("addr:%#010x free:%d till:%d size:%d\n", | |
619 | addr, free, till, size); | |
620 | /* linfo ("pos %d free %d size %d till %d copy %d auto %d noirq %d\n", */ | |
621 | /* dsp.dma_pos, free, size, till, copy, dsp.dma_auto, noirq); */ | |
622 | if (till <= copy) { | |
623 | if (0 == dsp.dma_auto) { | |
624 | copy = till; | |
625 | } | |
626 | } | |
627 | ||
628 | written = write_audio (addr, size, copy); | |
629 | dsp.left_till_irq -= written; | |
630 | AUD_adjust_estimate (free - written); | |
631 | ||
632 | if (dsp.left_till_irq <= 0) { | |
633 | mixer.regs[0x82] |= mixer.regs[0x80]; | |
634 | if (0 == noirq) | |
635 | *_irq = sb.irq; | |
636 | ||
637 | if (0 == dsp.dma_auto) { | |
638 | control (0); | |
639 | } | |
640 | } | |
641 | ||
642 | ldebug ("pos %5d free %5d size %5d till % 5d copy %5d dma size %5d\n", | |
643 | dsp.dma_pos, free, size, dsp.left_till_irq, copy, | |
644 | dsp.dma_buffer_size); | |
645 | ||
646 | if (dsp.left_till_irq <= 0) { | |
647 | dsp.left_till_irq += dsp.dma_buffer_size; | |
648 | } | |
649 | ||
650 | return dsp.dma_pos; | |
651 | } | |
652 | ||
653 | static int dma_misc_handler (int moo) | |
654 | { | |
655 | return -1; | |
656 | } | |
657 | ||
658 | static int magic_of_irq (int irq) | |
659 | { | |
660 | switch (irq) { | |
661 | case 2: | |
662 | return 1; | |
663 | case 5: | |
664 | return 2; | |
665 | case 7: | |
666 | return 4; | |
667 | case 10: | |
668 | return 8; | |
669 | default: | |
670 | log ("bad irq %d\n", irq); | |
671 | return 2; | |
672 | } | |
673 | } | |
674 | ||
675 | static int irq_of_magic (int magic) | |
676 | { | |
677 | switch (magic) { | |
678 | case 1: | |
679 | return 2; | |
680 | case 2: | |
681 | return 5; | |
682 | case 4: | |
683 | return 7; | |
684 | case 8: | |
685 | return 10; | |
686 | default: | |
687 | log ("bad irq magic %d\n", magic); | |
688 | return 2; | |
689 | } | |
690 | } | |
691 | ||
692 | void SB16_init (void) | |
693 | { | |
694 | int i; | |
695 | static const uint8_t dsp_write_ports[] = {0x6, 0xc}; | |
696 | static const uint8_t dsp_read_ports[] = {0x6, 0xa, 0xc, 0xd, 0xe, 0xf}; | |
697 | ||
698 | mixer.regs[0x0e] = ~0; | |
699 | mixer.regs[0x80] = magic_of_irq (sb.irq); | |
700 | mixer.regs[0x81] = 0x20 | (sb.dma << 1); | |
701 | ||
702 | DEREF (irq_of_magic); | |
703 | ||
704 | for (i = 0x30; i < 0x48; i++) { | |
705 | mixer.regs[i] = 0x20; | |
706 | } | |
707 | ||
708 | for (i = 0; i < LENOFA (dsp_write_ports); i++) { | |
709 | register_ioport_write (sb.port + dsp_write_ports[i], 1, dsp_write, 1); | |
710 | } | |
711 | ||
712 | for (i = 0; i < LENOFA (dsp_read_ports); i++) { | |
713 | register_ioport_read (sb.port + dsp_read_ports[i], 1, dsp_read, 1); | |
714 | } | |
715 | ||
716 | register_ioport_write (sb.port + 0x4, 1, mixer_write_indexb, 1); | |
717 | register_ioport_write (sb.port + 0x4, 1, mixer_write_indexw, 2); | |
718 | register_ioport_read (sb.port + 0x5, 1, mixer_read, 1); | |
719 | register_ioport_write (sb.port + 0x5, 1, mixer_write_datab, 1); | |
720 | ||
721 | DMA_register_channel (sb.hdma, SB_read_DMA, dma_misc_handler); | |
722 | DMA_register_channel (sb.dma, SB_read_DMA, dma_misc_handler); | |
723 | } |