c62d2810 |
1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 2002 Ben Parnell |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation; either version 2 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | */ |
20 | |
21 | /********************************************************/ |
22 | /******* sound.c */ |
23 | /******* */ |
24 | /******* Sound emulation code and waveform synthesis */ |
25 | /******* routines. A few ideas were inspired */ |
26 | /******* by code from Marat Fayzullin's EMUlib */ |
27 | /******* */ |
9115e7d2 |
28 | /********************************************************/ |
c62d2810 |
29 | |
30 | #include <stdlib.h> |
31 | #include <stdio.h> |
32 | |
33 | #include <string.h> |
34 | |
35 | #include "types.h" |
36 | #include "x6502.h" |
37 | |
38 | #include "fce.h" |
39 | #include "svga.h" |
40 | #include "sound.h" |
5bd16b94 |
41 | #include "state.h" |
c62d2810 |
42 | |
a384bf44 |
43 | uint32 Wave[2048+512]; |
ebde7d27 |
44 | int32 WaveHi[40000]; // unused |
a384bf44 |
45 | int16 WaveFinalMono[2048+512]; |
c62d2810 |
46 | |
a384bf44 |
47 | EXPSOUND GameExpSound={0,0,0,0,0,0}; |
c62d2810 |
48 | |
49 | uint8 trimode=0; |
50 | uint8 tricoop=0; |
5bd16b94 |
51 | |
52 | static uint8 IRQFrameMode=0; /* $4017 / xx000000 */ |
c62d2810 |
53 | uint8 PSG[0x18]; |
5bd16b94 |
54 | static uint8 RawDALatch=0; /* $4011 0xxxxxxx */ |
55 | |
56 | uint8 EnabledChannels=0; /* Byte written to $4015 */ |
c62d2810 |
57 | |
58 | uint8 decvolume[3]; |
59 | uint8 realvolume[3]; |
60 | |
61 | static int32 count[5]; |
ec4d13a3 |
62 | static int32 sqacc[2]={0,0}; |
c62d2810 |
63 | uint8 sqnon=0; |
64 | |
4fdfab07 |
65 | uint32 soundtsoffs=0; |
66 | |
c62d2810 |
67 | #undef printf |
68 | uint16 nreg; |
9115e7d2 |
69 | |
a384bf44 |
70 | static int32 lengthcount[4]; |
c62d2810 |
71 | |
5232c20c |
72 | extern int soundvol; |
73 | |
c62d2810 |
74 | static const uint8 Slengthtable[0x20]= |
75 | { |
76 | 0x5,0x7f,0xA,0x1,0x14,0x2,0x28,0x3,0x50,0x4,0x1E,0x5,0x7,0x6,0x0E,0x7, |
77 | 0x6,0x08,0xC,0x9,0x18,0xa,0x30,0xb,0x60,0xc,0x24,0xd,0x8,0xe,0x10,0xf |
78 | }; |
79 | |
80 | static uint32 lengthtable[0x20]; |
81 | |
82 | static const uint32 SNoiseFreqTable[0x10]= |
83 | { |
84 | 2,4,8,0x10,0x20,0x30,0x40,0x50,0x65,0x7f,0xbe,0xfe,0x17d,0x1fc,0x3f9,0x7f2 |
85 | }; |
86 | static uint32 NoiseFreqTable[0x10]; |
87 | |
a384bf44 |
88 | int32 nesincsize; |
89 | uint32 soundtsinc; |
90 | uint32 soundtsi; |
91 | |
c62d2810 |
92 | |
93 | static const uint8 NTSCPCMTable[0x10]= |
94 | { |
95 | 0xd6,0xbe,0xaa,0xa0,0x8f,0x7f,0x71,0x6b, |
96 | 0x5f,0x50,0x47,0x40,0x35,0x2a,0x24,0x1b |
97 | }; |
98 | |
99 | static const uint8 PALPCMTable[0x10]= // These values are just guessed. |
100 | { |
101 | 0xc6,0xb0,0x9d,0x94,0x84,0x75,0x68,0x63, |
102 | 0x58,0x4a,0x41,0x3b,0x31,0x27,0x21,0x19 |
103 | }; |
104 | |
5bd16b94 |
105 | static const uint32 NTSCDMCTable[0x10]= |
106 | { |
107 | 428,380,340,320,286,254,226,214, |
108 | 190,160,142,128,106, 84 ,72,54 |
109 | }; |
110 | |
111 | /* Previous values for PAL DMC was value - 1, |
112 | * I am not certain if this is if FCEU handled |
113 | * PAL differently or not, the NTSC values are right, |
114 | * so I am assuming that the current value is handled |
115 | * the same way NTSC is handled. */ |
116 | |
117 | static const uint32 PALDMCTable[0x10]= |
118 | { |
119 | 398, 354, 316, 298, 276, 236, 210, 198, |
120 | 176, 148, 132, 118, 98, 78, 66, 50 |
121 | }; |
c62d2810 |
122 | |
123 | // $4010 - Frequency |
124 | // $4011 - Actual data outputted |
125 | // $4012 - Address register: $c000 + V*64 |
126 | // $4013 - Size register: Size in bytes = (V+1)*64 |
127 | |
5bd16b94 |
128 | int32 DMCacc=1; |
129 | int32 DMCPeriod=0; |
130 | uint8 DMCBitCount=0; |
131 | |
132 | uint8 DMCAddressLatch=0,DMCSizeLatch=0; /* writes to 4012 and 4013 */ |
133 | uint8 DMCFormat=0; /* Write to $4010 */ |
134 | |
135 | static uint32 DMCAddress=0; |
136 | static int32 DMCSize=0; |
137 | static uint8 DMCShift=0; |
138 | static uint8 SIRQStat=0; |
c62d2810 |
139 | |
5bd16b94 |
140 | static char DMCHaveDMA=0; |
141 | static uint8 DMCDMABuf=0; |
142 | char DMCHaveSample=0; |
143 | |
144 | uint32 PSG_base; |
c62d2810 |
145 | |
d447f17f |
146 | static void Dummyfunc(int end) {}; |
c62d2810 |
147 | |
d447f17f |
148 | static void (*DoNoise)(int end)=Dummyfunc; |
149 | static void (*DoTriangle)(int end)=Dummyfunc; |
150 | static void (*DoPCM)(int end)=Dummyfunc; |
151 | static void (*DoSQ1)(int end)=Dummyfunc; |
152 | static void (*DoSQ2)(int end)=Dummyfunc; |
c62d2810 |
153 | |
c62d2810 |
154 | uint8 sweepon[2]={0,0}; |
155 | int32 curfreq[2]={0,0}; |
156 | |
c62d2810 |
157 | uint8 SweepCount[2]; |
158 | uint8 DecCountTo1[3]; |
159 | |
160 | uint8 fcnt=0; |
161 | int32 fhcnt=0; |
162 | int32 fhinc; |
163 | |
164 | static uint8 laster; |
165 | |
166 | /* Instantaneous? Maybe the new freq value is being calculated all of the time... */ |
167 | static int FASTAPASS(2) CheckFreq(uint32 cf, uint8 sr) |
168 | { |
169 | uint32 mod; |
170 | if(!(sr&0x8)) |
171 | { |
172 | mod=cf>>(sr&7); |
173 | if((mod+cf)&0x800) |
174 | return(0); |
175 | } |
176 | return(1); |
177 | } |
178 | |
5bd16b94 |
179 | static uint8 DutyCount[2]={0,0}; |
180 | |
181 | static void LoadDMCPeriod(uint8 V) |
c62d2810 |
182 | { |
5bd16b94 |
183 | if(PAL) |
184 | DMCPeriod=PALDMCTable[V]; |
185 | else |
186 | DMCPeriod=NTSCDMCTable[V]; |
c62d2810 |
187 | } |
188 | |
5bd16b94 |
189 | static void PrepDPCM() |
190 | { |
191 | DMCAddress=0x4000+(DMCAddressLatch<<6); |
192 | DMCSize=(DMCSizeLatch<<4)+1; |
193 | } |
194 | |
195 | static void SQReload(int x, uint8 V) |
196 | { |
197 | if(EnabledChannels&(1<<x)) |
198 | { |
199 | if(x) |
200 | DoSQ2(0); |
201 | else |
202 | DoSQ1(0); |
203 | lengthcount[x]=lengthtable[(V>>3)&0x1f]; |
204 | sqnon|=1<<x; |
205 | } |
206 | |
207 | sweepon[x]=PSG[(x<<2)|1]&0x80; |
208 | curfreq[x]=PSG[(x<<2)|0x2]|((V&7)<<8); |
209 | decvolume[x]=0xF; |
210 | SweepCount[x]=((PSG[(x<<2)|0x1]>>4)&7)+1; |
211 | DutyCount[x]=0; |
212 | sqacc[x]=((int32)curfreq[0]+1)<<18; |
213 | |
214 | //RectDutyCount[x]=7; |
215 | //EnvUnits[x].reloaddec=1; |
216 | //reloadfreq[x]=1; |
217 | } |
c62d2810 |
218 | |
219 | static DECLFW(Write_PSG) |
220 | { |
221 | //if((A>=0x4004 && A<=0x4007) || A==0x4015) |
4fdfab07 |
222 | //printf("$%04x:$%02x, %d\n",A,V,SOUNDTS); |
c62d2810 |
223 | A&=0x1f; |
224 | switch(A) |
225 | { |
226 | case 0x0: |
d447f17f |
227 | DoSQ1(0); |
c62d2810 |
228 | if(V&0x10) |
229 | realvolume[0]=V&0xF; |
230 | break; |
231 | case 0x1: |
232 | sweepon[0]=V&0x80; |
233 | break; |
234 | case 0x2: |
d447f17f |
235 | DoSQ1(0); |
c62d2810 |
236 | curfreq[0]&=0xFF00; |
237 | curfreq[0]|=V; |
238 | break; |
9115e7d2 |
239 | case 0x3: |
5bd16b94 |
240 | SQReload(0,V); |
c62d2810 |
241 | break; |
242 | |
9115e7d2 |
243 | case 0x4: |
d447f17f |
244 | DoSQ2(0); |
c62d2810 |
245 | if(V&0x10) |
246 | realvolume[1]=V&0xF; |
247 | break; |
248 | case 0x5: |
249 | sweepon[1]=V&0x80; |
250 | break; |
251 | case 0x6: |
d447f17f |
252 | DoSQ2(0); |
c62d2810 |
253 | curfreq[1]&=0xFF00; |
254 | curfreq[1]|=V; |
255 | break; |
9115e7d2 |
256 | case 0x7: |
5bd16b94 |
257 | SQReload(1,V); |
c62d2810 |
258 | break; |
9115e7d2 |
259 | case 0x8: |
d447f17f |
260 | DoTriangle(0); |
c62d2810 |
261 | if(laster&0x80) |
262 | { |
263 | tricoop=V&0x7F; |
264 | trimode=V&0x80; |
265 | } |
266 | if(!(V&0x7F)) |
267 | tricoop=0; |
268 | laster=V&0x80; |
269 | break; |
d447f17f |
270 | case 0xa:DoTriangle(0); |
c62d2810 |
271 | break; |
272 | case 0xb: |
5bd16b94 |
273 | if(EnabledChannels&0x4) |
c62d2810 |
274 | { |
d447f17f |
275 | DoTriangle(0); |
c62d2810 |
276 | sqnon|=4; |
277 | lengthcount[2]=lengthtable[(V>>3)&0x1f]; |
278 | } |
279 | laster=0x80; |
280 | tricoop=PSG[0x8]&0x7f; |
281 | trimode=PSG[0x8]&0x80; |
282 | break; |
d447f17f |
283 | case 0xC:DoNoise(0); |
c62d2810 |
284 | if(V&0x10) |
285 | realvolume[2]=V&0xF; |
286 | break; |
d447f17f |
287 | case 0xE:DoNoise(0);break; |
c62d2810 |
288 | case 0xF: |
5bd16b94 |
289 | if(EnabledChannels&8) |
c62d2810 |
290 | { |
d447f17f |
291 | DoNoise(0); |
c62d2810 |
292 | sqnon|=8; |
293 | lengthcount[3]=lengthtable[(V>>3)&0x1f]; |
294 | } |
295 | decvolume[2]=0xF; |
9115e7d2 |
296 | DecCountTo1[2]=(PSG[0xC]&0xF)+1; |
c62d2810 |
297 | break; |
5bd16b94 |
298 | } |
299 | PSG[A]=V; |
300 | } |
c62d2810 |
301 | |
5bd16b94 |
302 | static DECLFW(Write_DMCRegs) |
303 | { |
304 | A&=0xF; |
305 | |
306 | switch(A) |
307 | { |
308 | case 0x00:DoPCM(0); |
309 | LoadDMCPeriod(V&0xF); |
310 | |
311 | if(SIRQStat&0x80) |
c62d2810 |
312 | { |
5bd16b94 |
313 | if(!(V&0x80)) |
c62d2810 |
314 | { |
5bd16b94 |
315 | X6502_IRQEnd(FCEU_IQDPCM); |
316 | SIRQStat&=~0x80; |
c62d2810 |
317 | } |
5bd16b94 |
318 | else X6502_IRQBegin(FCEU_IQDPCM); |
c62d2810 |
319 | } |
5bd16b94 |
320 | DMCFormat=V; |
321 | break; |
322 | case 0x01:DoPCM(0); |
323 | RawDALatch=V&0x7F; |
324 | break; |
325 | case 0x02:DMCAddressLatch=V;break; |
326 | case 0x03:DMCSizeLatch=V;break; |
c62d2810 |
327 | } |
c62d2810 |
328 | } |
329 | |
5bd16b94 |
330 | static DECLFW(StatusWrite) |
c62d2810 |
331 | { |
5bd16b94 |
332 | int x; |
333 | int32 end=(SOUNDTS<<16)/soundtsinc; |
334 | int t=V^EnabledChannels; |
335 | |
336 | if(t&1) |
337 | DoSQ1(end); |
338 | if(t&2) |
339 | DoSQ2(end); |
340 | if(t&4) |
341 | DoTriangle(end); |
342 | if(t&8) |
343 | DoNoise(end); |
344 | if(t&0x10) |
345 | DoPCM(end); |
346 | sqnon&=V; |
347 | for(x=0;x<4;x++) |
348 | if(!(V&(1<<x))) lengthcount[x]=0; /* Force length counters to 0. */ |
349 | |
350 | if(V&0x10) |
351 | { |
352 | if(!DMCSize) |
353 | PrepDPCM(); |
354 | } |
355 | else |
356 | { |
357 | DMCSize=0; |
358 | } |
359 | SIRQStat&=~0x80; |
360 | X6502_IRQEnd(FCEU_IQDPCM); |
361 | EnabledChannels=V&0x1F; |
c62d2810 |
362 | } |
363 | |
5bd16b94 |
364 | DECLFR(StatusRead) |
c62d2810 |
365 | { |
5bd16b94 |
366 | //int x; |
c62d2810 |
367 | uint8 ret; |
368 | |
5bd16b94 |
369 | ret=SIRQStat; |
370 | |
371 | //for(x=0;x<4;x++) ret|=lengthcount[x]?(1<<x):0; |
372 | ret|=EnabledChannels&sqnon; |
373 | if(DMCSize) ret|=0x10; |
374 | |
375 | #ifdef FCEUDEF_DEBUGGER |
376 | if(!fceuindbg) |
377 | #endif |
378 | { |
379 | SIRQStat&=~0x40; |
380 | X6502_IRQEnd(FCEU_IQFCOUNT); |
381 | } |
c62d2810 |
382 | return ret; |
383 | } |
384 | |
385 | static void FASTAPASS(1) FrameSoundStuff(int V) |
386 | { |
387 | int P; |
d447f17f |
388 | uint32 end = (SOUNDTS<<16)/soundtsinc; |
c62d2810 |
389 | |
d447f17f |
390 | DoSQ1(end); |
391 | DoSQ2(end); |
392 | DoNoise(end); |
c62d2810 |
393 | |
394 | switch((V&1)) |
395 | { |
396 | case 1: /* Envelope decay, linear counter, length counter, freq sweep */ |
5bd16b94 |
397 | if(EnabledChannels&4 && sqnon&4) |
c62d2810 |
398 | if(!(PSG[8]&0x80)) |
399 | { |
400 | if(lengthcount[2]>0) |
401 | { |
402 | lengthcount[2]--; |
403 | if(lengthcount[2]<=0) |
404 | { |
d447f17f |
405 | DoTriangle(0); |
c62d2810 |
406 | sqnon&=~4; |
407 | } |
9115e7d2 |
408 | } |
c62d2810 |
409 | } |
410 | |
411 | for(P=0;P<2;P++) |
412 | { |
5bd16b94 |
413 | if(EnabledChannels&(P+1) && sqnon&(P+1)) |
c62d2810 |
414 | { |
415 | if(!(PSG[P<<2]&0x20)) |
416 | { |
417 | if(lengthcount[P]>0) |
418 | { |
9115e7d2 |
419 | lengthcount[P]--; |
c62d2810 |
420 | if(lengthcount[P]<=0) |
421 | { |
422 | sqnon&=~(P+1); |
423 | } |
424 | } |
425 | } |
426 | } |
427 | /* Frequency Sweep Code Here */ |
428 | /* xxxx 0000 */ |
429 | /* xxxx = hz. 120/(x+1)*/ |
430 | if(sweepon[P]) |
431 | { |
432 | int32 mod=0; |
433 | |
9115e7d2 |
434 | if(SweepCount[P]>0) SweepCount[P]--; |
c62d2810 |
435 | if(SweepCount[P]<=0) |
436 | { |
437 | SweepCount[P]=((PSG[(P<<2)+0x1]>>4)&7)+1; //+1; |
438 | { |
439 | if(PSG[(P<<2)+0x1]&0x8) |
440 | { |
9115e7d2 |
441 | mod-=(P^1)+((curfreq[P])>>(PSG[(P<<2)+0x1]&7)); |
c62d2810 |
442 | |
443 | if(curfreq[P] && (PSG[(P<<2)+0x1]&7)/* && sweepon[P]&0x80*/) |
444 | { |
445 | curfreq[P]+=mod; |
446 | } |
447 | } |
448 | else |
449 | { |
450 | mod=curfreq[P]>>(PSG[(P<<2)+0x1]&7); |
451 | if((mod+curfreq[P])&0x800) |
452 | { |
453 | sweepon[P]=0; |
454 | curfreq[P]=0; |
455 | } |
456 | else |
457 | { |
458 | if(curfreq[P] && (PSG[(P<<2)+0x1]&7)/* && sweepon[P]&0x80*/) |
459 | { |
460 | curfreq[P]+=mod; |
461 | } |
462 | } |
463 | } |
464 | } |
465 | } |
9115e7d2 |
466 | } |
c62d2810 |
467 | } |
468 | |
5bd16b94 |
469 | if(EnabledChannels&0x8 && sqnon&8) |
c62d2810 |
470 | { |
471 | if(!(PSG[0xC]&0x20)) |
472 | { |
473 | if(lengthcount[3]>0) |
474 | { |
475 | lengthcount[3]--; |
476 | if(lengthcount[3]<=0) |
477 | { |
478 | sqnon&=~8; |
479 | } |
480 | } |
481 | } |
482 | } |
483 | |
484 | case 0: /* Envelope decay + linear counter */ |
485 | if(!trimode) |
9115e7d2 |
486 | { |
c62d2810 |
487 | laster=0; |
488 | if(tricoop) |
489 | { |
d447f17f |
490 | if(tricoop==1) DoTriangle(0); |
c62d2810 |
491 | tricoop--; |
492 | } |
493 | } |
494 | |
495 | for(P=0;P<2;P++) |
496 | { |
497 | if(DecCountTo1[P]>0) DecCountTo1[P]--; |
498 | if(DecCountTo1[P]<=0) |
499 | { |
500 | DecCountTo1[P]=(PSG[P<<2]&0xF)+1; |
501 | if(decvolume[P] || PSG[P<<2]&0x20) |
502 | { |
503 | decvolume[P]--; |
504 | /* Step from 0 to full volume seems to take twice as long |
505 | as the other steps. I don't know if this is the correct |
506 | way to double its length, though(or if it even matters). |
507 | */ |
508 | if((PSG[P<<2]&0x20) && (decvolume[P]==0)) |
509 | DecCountTo1[P]<<=1; |
510 | decvolume[P]&=15; |
511 | } |
512 | } |
513 | if(!(PSG[P<<2]&0x10)) |
514 | realvolume[P]=decvolume[P]; |
515 | } |
516 | |
517 | if(DecCountTo1[2]>0) DecCountTo1[2]--; |
518 | if(DecCountTo1[2]<=0) |
519 | { |
520 | DecCountTo1[2]=(PSG[0xC]&0xF)+1; |
521 | if(decvolume[2] || PSG[0xC]&0x20) |
522 | { |
523 | decvolume[2]--; |
524 | /* Step from 0 to full volume seems to take twice as long |
525 | as the other steps. I don't know if this is the correct |
526 | way to double its length, though(or if it even matters). |
527 | */ |
528 | if((PSG[0xC]&0x20) && (decvolume[2]==0)) |
529 | DecCountTo1[2]<<=1; |
530 | decvolume[2]&=15; |
531 | } |
532 | } |
533 | if(!(PSG[0xC]&0x10)) |
534 | realvolume[2]=decvolume[2]; |
535 | |
536 | break; |
537 | } |
538 | |
539 | } |
540 | |
541 | void FrameSoundUpdate(void) |
542 | { |
543 | // Linear counter: Bit 0-6 of $4008 |
544 | // Length counter: Bit 4-7 of $4003, $4007, $400b, $400f |
545 | |
5bd16b94 |
546 | if(!fcnt && !(IRQFrameMode&0x3)) |
547 | { |
548 | SIRQStat|=0x40; |
549 | X6502_IRQBegin(FCEU_IQFCOUNT); |
550 | } |
551 | |
c62d2810 |
552 | if(fcnt==3) |
553 | { |
5bd16b94 |
554 | if(IRQFrameMode&0x2) |
c62d2810 |
555 | fhcnt+=fhinc; |
c62d2810 |
556 | } |
c62d2810 |
557 | FrameSoundStuff(fcnt); |
558 | fcnt=(fcnt+1)&3; |
559 | } |
560 | |
5bd16b94 |
561 | static INLINE void tester(void) |
562 | { |
563 | if(DMCBitCount==0) |
564 | { |
565 | if(!DMCHaveDMA) |
566 | DMCHaveSample=0; |
567 | else |
568 | { |
569 | DMCHaveSample=1; |
570 | DMCShift=DMCDMABuf; |
571 | DMCHaveDMA=0; |
572 | } |
573 | } |
574 | } |
575 | |
c62d2810 |
576 | static uint32 ChannelBC[5]; |
577 | |
578 | static uint32 RectAmp[2][8]; |
579 | |
580 | static void FASTAPASS(1) CalcRectAmp(int P) |
581 | { |
582 | static int tal[4]={1,2,4,6}; |
583 | int V; |
584 | int x; |
585 | uint32 *b=RectAmp[P]; |
586 | int m; |
587 | |
588 | //if(PSG[P<<2]&0x10) |
589 | V=realvolume[P]<<4; |
590 | //V=(PSG[P<<2]&15)<<4; |
591 | //else |
592 | // V=decvolume[P]<<4; |
593 | m=tal[(PSG[P<<2]&0xC0)>>6]; |
594 | for(x=0;x<m;x++,b++) |
595 | *b=0; |
596 | for(;x<8;x++,b++) |
597 | *b=V; |
598 | } |
599 | |
5bd16b94 |
600 | static INLINE void DMCDMA(void) |
601 | { |
602 | if(DMCSize && !DMCHaveDMA) |
603 | { |
604 | #if 0 |
605 | X6502_DMR(0x8000+DMCAddress); |
606 | X6502_DMR(0x8000+DMCAddress); |
607 | X6502_DMR(0x8000+DMCAddress); |
608 | DMCDMABuf=X6502_DMR(0x8000+DMCAddress); |
609 | #else |
610 | X6502_AddCycles(4); |
611 | DMCDMABuf=X.DB=ARead[0x8000+DMCAddress](0x8000+DMCAddress); |
612 | #endif |
613 | DMCHaveDMA=1; |
614 | DMCAddress=(DMCAddress+1)&0x7fff; |
615 | DMCSize--; |
616 | if(!DMCSize) |
617 | { |
618 | if(DMCFormat&0x40) |
619 | PrepDPCM(); |
620 | else |
621 | { |
622 | SIRQStat|=0x80; |
623 | if(DMCFormat&0x80) |
624 | X6502_IRQBegin(FCEU_IQDPCM); |
625 | } |
626 | } |
627 | } |
628 | } |
629 | |
3ac1cc0b |
630 | void FCEU_SoundCPUHook(int cycles48) |
631 | { |
632 | fhcnt-=cycles48; |
633 | if(fhcnt<=0) |
634 | { |
635 | FrameSoundUpdate(); |
636 | fhcnt+=fhinc; |
637 | } |
638 | |
5bd16b94 |
639 | DMCDMA(); |
640 | DMCacc-=cycles48/48; |
641 | |
642 | while(DMCacc<=0) |
3ac1cc0b |
643 | { |
5bd16b94 |
644 | if(DMCHaveSample) |
3ac1cc0b |
645 | { |
5bd16b94 |
646 | uint8 bah=RawDALatch; |
647 | int t=((DMCShift&1)<<2)-2; |
648 | |
649 | /* Unbelievably ugly hack */ |
650 | if(FSettings.SndRate) |
3ac1cc0b |
651 | { |
5bd16b94 |
652 | soundtsoffs+=DMCacc; |
653 | DoPCM(0); |
654 | soundtsoffs-=DMCacc; |
3ac1cc0b |
655 | } |
5bd16b94 |
656 | RawDALatch+=t; |
657 | if(RawDALatch&0x80) |
658 | RawDALatch=bah; |
3ac1cc0b |
659 | } |
5bd16b94 |
660 | |
661 | DMCacc+=DMCPeriod; |
662 | DMCBitCount=(DMCBitCount+1)&7; |
663 | DMCShift>>=1; |
664 | tester(); |
3ac1cc0b |
665 | } |
666 | } |
667 | |
d447f17f |
668 | static void RDoPCM(int32 end) |
c62d2810 |
669 | { |
5bd16b94 |
670 | int32 V; |
671 | int32 start; |
c62d2810 |
672 | |
5bd16b94 |
673 | start=ChannelBC[4]; |
674 | if(end==0) end=(SOUNDTS<<16)/soundtsinc; |
675 | if(end<=start) return; |
676 | ChannelBC[4]=end; |
c62d2810 |
677 | |
5bd16b94 |
678 | for(V=start;V<end;V++) |
679 | //WaveHi[V]+=(((RawDALatch<<16)/256) * FSettings.PCMVolume)&(~0xFFFF); // TODO get rid of floating calculations to binary. set log volume scaling. |
680 | Wave[V>>4]+=RawDALatch<<3; |
c62d2810 |
681 | } |
682 | |
d447f17f |
683 | static void RDoSQ1(int32 end) |
c62d2810 |
684 | { |
685 | int32 V; |
d447f17f |
686 | int32 start; |
ec4d13a3 |
687 | int32 freq; |
c62d2810 |
688 | |
c62d2810 |
689 | start=ChannelBC[0]; |
d447f17f |
690 | if(end==0) end=(SOUNDTS<<16)/soundtsinc; |
c62d2810 |
691 | if(end<=start) return; |
692 | ChannelBC[0]=end; |
693 | |
5bd16b94 |
694 | if(!(EnabledChannels&1 && sqnon&1)) |
d447f17f |
695 | return; |
696 | |
c62d2810 |
697 | if(curfreq[0]<8 || curfreq[0]>0x7ff) |
698 | return; |
699 | if(!CheckFreq(curfreq[0],PSG[0x1])) |
700 | return; |
701 | |
d447f17f |
702 | CalcRectAmp(0); |
703 | |
c62d2810 |
704 | { |
705 | uint32 out=RectAmp[0][DutyCount[0]]; |
706 | freq=curfreq[0]+1; |
707 | { |
ec4d13a3 |
708 | freq<<=18; |
c62d2810 |
709 | for(V=start;V<end;V++) |
710 | { |
711 | Wave[V>>4]+=out; |
a384bf44 |
712 | sqacc[0]-=nesincsize; |
c62d2810 |
713 | if(sqacc[0]<=0) |
714 | { |
715 | rea: |
716 | sqacc[0]+=freq; |
717 | DutyCount[0]++; |
718 | if(sqacc[0]<=0) goto rea; |
719 | |
720 | DutyCount[0]&=7; |
721 | out=RectAmp[0][DutyCount[0]]; |
722 | } |
c62d2810 |
723 | } |
c62d2810 |
724 | } |
d447f17f |
725 | } |
c62d2810 |
726 | } |
727 | |
d447f17f |
728 | static void RDoSQ2(int32 end) |
c62d2810 |
729 | { |
730 | int32 V; |
d447f17f |
731 | int32 start; |
ec4d13a3 |
732 | int32 freq; |
c62d2810 |
733 | |
c62d2810 |
734 | start=ChannelBC[1]; |
d447f17f |
735 | if(end==0) end=(SOUNDTS<<16)/soundtsinc; |
c62d2810 |
736 | if(end<=start) return; |
737 | ChannelBC[1]=end; |
738 | |
5bd16b94 |
739 | if(!(EnabledChannels&2 && sqnon&2)) |
d447f17f |
740 | return; |
741 | |
c62d2810 |
742 | if(curfreq[1]<8 || curfreq[1]>0x7ff) |
743 | return; |
744 | if(!CheckFreq(curfreq[1],PSG[0x5])) |
745 | return; |
746 | |
d447f17f |
747 | CalcRectAmp(1); |
748 | |
c62d2810 |
749 | { |
750 | uint32 out=RectAmp[1][DutyCount[1]]; |
751 | freq=curfreq[1]+1; |
752 | |
753 | { |
ec4d13a3 |
754 | freq<<=18; |
c62d2810 |
755 | for(V=start;V<end;V++) |
756 | { |
757 | Wave[V>>4]+=out; |
a384bf44 |
758 | sqacc[1]-=nesincsize; |
c62d2810 |
759 | if(sqacc[1]<=0) |
760 | { |
761 | rea: |
762 | sqacc[1]+=freq; |
763 | DutyCount[1]++; |
764 | if(sqacc[1]<=0) goto rea; |
765 | |
766 | DutyCount[1]&=7; |
767 | out=RectAmp[1][DutyCount[1]]; |
768 | } |
c62d2810 |
769 | } |
c62d2810 |
770 | } |
d447f17f |
771 | } |
c62d2810 |
772 | } |
773 | |
774 | |
d447f17f |
775 | static void RDoTriangle(int32 end) |
c62d2810 |
776 | { |
777 | static uint32 tcout=0; |
778 | int32 V; |
d447f17f |
779 | int32 start; //,freq; |
ec4d13a3 |
780 | int32 freq=(((PSG[0xa]|((PSG[0xb]&7)<<8))+1)); |
c62d2810 |
781 | |
782 | start=ChannelBC[2]; |
d447f17f |
783 | if(end==0) end=(SOUNDTS<<16)/soundtsinc; |
c62d2810 |
784 | if(end<=start) return; |
785 | ChannelBC[2]=end; |
786 | |
5bd16b94 |
787 | if(! (EnabledChannels&0x4 && sqnon&4 && tricoop) ) |
c62d2810 |
788 | { // Counter is halted, but we still need to output. |
789 | for(V=start;V<end;V++) |
790 | Wave[V>>4]+=tcout; |
791 | } |
792 | else if(freq<=4) // 55.9Khz - Might be barely audible on a real NES, but |
793 | // it's too costly to generate audio at this high of a frequency |
794 | // (55.9Khz * 32 for the stepping). |
795 | // The same could probably be said for ~27.8Khz, so we'll |
796 | // take care of that too. We'll just output the average |
797 | // value(15/2 - scaled properly for our output format, of course). |
798 | // We'll also take care of ~18Khz and ~14Khz too, since they should be barely audible. |
799 | // (Some proof or anything to confirm/disprove this would be nice.). |
800 | { |
801 | for(V=start;V<end;V++) |
802 | Wave[V>>4]+=((0xF<<4)+(0xF<<2))>>1; |
803 | } |
804 | else |
805 | { |
ec4d13a3 |
806 | static int32 triacc=0; |
9115e7d2 |
807 | static uint8 tc=0; |
c62d2810 |
808 | |
ec4d13a3 |
809 | freq<<=17; |
c62d2810 |
810 | for(V=start;V<end;V++) |
811 | { |
a384bf44 |
812 | triacc-=nesincsize; |
c62d2810 |
813 | if(triacc<=0) |
814 | { |
815 | rea: |
816 | triacc+=freq; //t; |
817 | tc=(tc+1)&0x1F; |
818 | if(triacc<=0) goto rea; |
819 | |
820 | tcout=(tc&0xF); |
821 | if(tc&0x10) tcout^=0xF; |
822 | tcout=(tcout<<4)+(tcout<<2); |
823 | } |
824 | Wave[V>>4]+=tcout; |
825 | } |
826 | } |
827 | } |
828 | |
d447f17f |
829 | static void RDoNoise(int32 end) |
c62d2810 |
830 | { |
831 | int32 inc,V; |
d447f17f |
832 | int32 start; |
c62d2810 |
833 | |
834 | start=ChannelBC[3]; |
d447f17f |
835 | if(end==0) end=(SOUNDTS<<16)/soundtsinc; |
c62d2810 |
836 | if(end<=start) return; |
837 | ChannelBC[3]=end; |
838 | |
5bd16b94 |
839 | if(EnabledChannels&0x8 && sqnon&8) |
c62d2810 |
840 | { |
841 | uint32 outo; |
842 | uint32 amptab[2]; |
843 | uint8 amplitude; |
9115e7d2 |
844 | |
c62d2810 |
845 | amplitude=realvolume[2]; |
846 | //if(PSG[0xC]&0x10) |
847 | // amplitude=(PSG[0xC]&0xF); |
9115e7d2 |
848 | //else |
c62d2810 |
849 | // amplitude=decvolume[2]&0xF; |
850 | |
9115e7d2 |
851 | inc=NoiseFreqTable[PSG[0xE]&0xF]; |
c62d2810 |
852 | amptab[0]=((amplitude<<2)+amplitude+amplitude)<<1; |
853 | amptab[1]=0; |
854 | outo=amptab[nreg&1]; |
855 | |
9115e7d2 |
856 | if(amplitude) |
c62d2810 |
857 | { |
9115e7d2 |
858 | if(PSG[0xE]&0x80) // "short" noise |
c62d2810 |
859 | for(V=start;V<end;V++) |
9115e7d2 |
860 | { |
c62d2810 |
861 | Wave[V>>4]+=outo; |
862 | if(count[3]>=inc) |
9115e7d2 |
863 | { |
864 | uint8 feedback; |
c62d2810 |
865 | |
866 | feedback=((nreg>>8)&1)^((nreg>>14)&1); |
867 | nreg=(nreg<<1)+feedback; |
868 | nreg&=0x7fff; |
869 | outo=amptab[nreg&1]; |
870 | count[3]-=inc; |
871 | } |
872 | count[3]+=0x1000; |
873 | } |
874 | else |
875 | for(V=start;V<end;V++) |
876 | { |
877 | Wave[V>>4]+=outo; |
878 | if(count[3]>=inc) |
879 | { |
880 | uint8 feedback; |
881 | |
882 | feedback=((nreg>>13)&1)^((nreg>>14)&1); |
883 | nreg=(nreg<<1)+feedback; |
884 | nreg&=0x7fff; |
885 | outo=amptab[nreg&1]; |
886 | count[3]-=inc; |
887 | } |
888 | count[3]+=0x1000; |
889 | } |
890 | } |
c62d2810 |
891 | } |
892 | } |
893 | |
77887306 |
894 | DECLFW(Write_IRQFM) |
d97315ac |
895 | { |
896 | V=(V&0xC0)>>6; |
897 | fcnt=0; |
898 | if(V&0x2) |
899 | FrameSoundUpdate(); |
900 | fcnt=1; |
901 | fhcnt=fhinc; |
902 | X6502_IRQEnd(FCEU_IQFCOUNT); |
903 | SIRQStat&=~0x40; |
5bd16b94 |
904 | IRQFrameMode=V; |
d97315ac |
905 | } |
906 | |
c62d2810 |
907 | void SetNESSoundMap(void) |
9115e7d2 |
908 | { |
5bd16b94 |
909 | SetWriteHandler(0x4000,0x400F,Write_PSG); |
910 | SetWriteHandler(0x4010,0x4013,Write_DMCRegs); |
d97315ac |
911 | SetWriteHandler(0x4017,0x4017,Write_IRQFM); |
5bd16b94 |
912 | |
913 | SetWriteHandler(0x4015,0x4015,StatusWrite); |
914 | SetReadHandler(0x4015,0x4015,StatusRead); |
c62d2810 |
915 | } |
916 | |
9115e7d2 |
917 | int32 highp; // 0 through 65536, 0 = no high pass, 65536 = max high pass |
c62d2810 |
918 | |
9115e7d2 |
919 | int32 lowp; // 0 through 65536, 65536 = max low pass(total attenuation) |
c62d2810 |
920 | // 65536 = no low pass |
7b356ee3 |
921 | static int32 flt_acc=0, flt_acc2=0; |
922 | |
d447f17f |
923 | static void FilterSound(uint32 *in, int16 *outMono, int count) |
c62d2810 |
924 | { |
d447f17f |
925 | // static int min=0, max=0; |
0ab4d38f |
926 | int sh=2; |
927 | if (soundvol < 5) sh += 5 - soundvol; |
ec4d13a3 |
928 | |
929 | for(;count;count--,in++,outMono++) |
c62d2810 |
930 | { |
ec4d13a3 |
931 | int32 diff; |
c62d2810 |
932 | |
7b356ee3 |
933 | diff = *in - flt_acc; |
c62d2810 |
934 | |
7b356ee3 |
935 | flt_acc += (diff*highp)>>16; |
936 | flt_acc2+= (int32) (((int64)((diff-flt_acc2)*lowp))>>16); |
c62d2810 |
937 | *in=0; |
9115e7d2 |
938 | |
0ab4d38f |
939 | *outMono = flt_acc2*7 >> sh; // * 7 >> 2 = * 1.75 |
d447f17f |
940 | // if (acc2 < min) { printf("min: %i %04x\n", acc2, acc2); min = acc2; } |
941 | // if (acc2 > max) { printf("max: %i %04x\n", acc2, acc2); max = acc2; } |
c62d2810 |
942 | } |
943 | } |
944 | |
5232c20c |
945 | |
946 | |
d97315ac |
947 | static int32 inbuf=0; |
c62d2810 |
948 | int FlushEmulateSound(void) |
949 | { |
c62d2810 |
950 | int x; |
4fdfab07 |
951 | uint32 end; |
5232c20c |
952 | |
c62d2810 |
953 | if(!timestamp) return(0); |
954 | |
5232c20c |
955 | if(!FSettings.SndRate || (soundvol == 0)) |
c62d2810 |
956 | { |
957 | end=0; |
958 | goto nosoundo; |
959 | } |
960 | |
4fdfab07 |
961 | end=(SOUNDTS<<16)/soundtsinc; |
d447f17f |
962 | DoSQ1(end); |
963 | DoSQ2(end); |
964 | DoTriangle(end); |
965 | DoNoise(end); |
966 | DoPCM(end); |
c62d2810 |
967 | |
968 | if(GameExpSound.Fill) |
969 | GameExpSound.Fill(end&0xF); |
970 | |
d447f17f |
971 | FilterSound(Wave,WaveFinalMono,end>>4); |
c62d2810 |
972 | |
973 | if(end&0xF) |
974 | Wave[0]=Wave[(end>>4)]; |
9115e7d2 |
975 | Wave[(end>>4)]=0; |
c62d2810 |
976 | |
977 | nosoundo: |
978 | for(x=0;x<5;x++) |
979 | ChannelBC[x]=end&0xF; |
4fdfab07 |
980 | soundtsoffs=(soundtsinc*(end&0xF))>>16; |
d97315ac |
981 | end>>=4; |
982 | inbuf=end; |
983 | return(end); |
c62d2810 |
984 | } |
985 | |
c4980f9e |
986 | int GetSoundBuffer(int16 **W) |
c62d2810 |
987 | { |
c4980f9e |
988 | *W=WaveFinalMono; |
d97315ac |
989 | return inbuf; |
c62d2810 |
990 | } |
991 | |
5bd16b94 |
992 | void FCEUSND_Power(void) |
c62d2810 |
993 | { |
994 | int x; |
995 | |
996 | SetNESSoundMap(); |
5bd16b94 |
997 | memset(PSG,0x00,sizeof(PSG)); |
998 | FCEUSND_Reset(); |
c62d2810 |
999 | |
5bd16b94 |
1000 | memset(Wave,0,sizeof(Wave)); |
1001 | memset(WaveHi,0,sizeof(WaveHi)); |
1002 | //memset(&EnvUnits,0,sizeof(EnvUnits)); |
1003 | |
1004 | for(x=0;x<5;x++) |
1005 | ChannelBC[x]=0; |
4fdfab07 |
1006 | soundtsoffs=0; |
5bd16b94 |
1007 | LoadDMCPeriod(DMCFormat&0xF); |
c62d2810 |
1008 | } |
1009 | |
5bd16b94 |
1010 | void FCEUSND_Reset(void) |
c62d2810 |
1011 | { |
1012 | int x; |
1013 | for(x=0;x<0x16;x++) |
1014 | if(x!=1 && x!=5 && x!=0x14) BWrite[0x4000+x](0x4000+x,0); |
5bd16b94 |
1015 | |
1016 | IRQFrameMode=0x0; |
c62d2810 |
1017 | fhcnt=fhinc; |
1018 | fcnt=0; |
1019 | nreg=1; |
5bd16b94 |
1020 | |
1021 | DMCHaveDMA=DMCHaveSample=0; |
1022 | SIRQStat=0x00; |
1023 | |
1024 | RawDALatch=0x00; |
1025 | //TriCount=0; |
1026 | //TriMode=0; |
1027 | //tristep=0; |
1028 | EnabledChannels=0; |
1029 | for(x=0;x<4;x++) |
1030 | lengthcount[x]=0; |
1031 | |
1032 | DMCAddressLatch=0; |
1033 | DMCSizeLatch=0; |
1034 | DMCFormat=0; |
1035 | DMCAddress=0; |
1036 | DMCSize=0; |
1037 | DMCShift=0; |
1038 | DMCacc=1; |
1039 | DMCBitCount=0; |
c62d2810 |
1040 | } |
1041 | |
77887306 |
1042 | void SetSoundVariables(void) |
c62d2810 |
1043 | { |
9115e7d2 |
1044 | int x; |
c62d2810 |
1045 | |
1046 | fhinc=PAL?16626:14915; // *2 CPU clock rate |
1047 | fhinc*=24; |
1048 | for(x=0;x<0x20;x++) |
1049 | lengthtable[x]=Slengthtable[x]<<1; |
1050 | |
1051 | if(FSettings.SndRate) |
1052 | { |
1053 | DoNoise=RDoNoise; |
1054 | DoTriangle=RDoTriangle; |
1055 | DoPCM=RDoPCM; |
1056 | DoSQ1=RDoSQ1; |
1057 | DoSQ2=RDoSQ2; |
9115e7d2 |
1058 | } |
c62d2810 |
1059 | else |
1060 | { |
1061 | DoNoise=DoTriangle=DoPCM=DoSQ1=DoSQ2=Dummyfunc; |
1062 | } |
1063 | |
1064 | if(!FSettings.SndRate) return; |
1065 | if(GameExpSound.RChange) |
1066 | GameExpSound.RChange(); |
1067 | |
ec4d13a3 |
1068 | // nesincsizeLL=(int64)((int64)562949953421312*(double)(PAL?PAL_CPU:NTSC_CPU)/(FSettings.SndRate OVERSAMPLE)); |
a384bf44 |
1069 | nesincsize=(int32)(((int64)1<<17)*(double)(PAL?PAL_CPU:NTSC_CPU)/(FSettings.SndRate * 16)); // 308845 - 1832727 |
c62d2810 |
1070 | PSG_base=(uint32)(PAL?(long double)PAL_CPU/16:(long double)NTSC_CPU/16); |
1071 | |
1072 | for(x=0;x<0x10;x++) |
1073 | { |
1074 | long double z; |
1075 | z=SNoiseFreqTable[x]<<1; |
1076 | z=(PAL?PAL_CPU:NTSC_CPU)/z; |
1077 | z=(long double)((uint32)((FSettings.SndRate OVERSAMPLE)<<12))/z; |
1078 | NoiseFreqTable[x]=z; |
1079 | } |
1080 | soundtsinc=(uint32)((uint64)(PAL?(long double)PAL_CPU*65536:(long double)NTSC_CPU*65536)/(FSettings.SndRate OVERSAMPLE)); |
d447f17f |
1081 | memset(Wave,0,sizeof(Wave)); |
c62d2810 |
1082 | for(x=0;x<5;x++) |
1083 | ChannelBC[x]=0; |
1084 | highp=(250<<16)/FSettings.SndRate; // Arbitrary |
ec4d13a3 |
1085 | lowp=(25000<<16)/FSettings.SndRate; // Arbitrary |
c62d2810 |
1086 | |
1087 | if(highp>(1<<16)) highp=1<<16; |
1088 | if(lowp>(1<<16)) lowp=1<<16; |
7b356ee3 |
1089 | |
1090 | flt_acc=flt_acc2=0; |
c62d2810 |
1091 | } |
1092 | |
1093 | void FixOldSaveStateSFreq(void) |
1094 | { |
1095 | int x; |
1096 | for(x=0;x<2;x++) |
1097 | { |
1098 | curfreq[x]=PSG[0x2+(x<<2)]|((PSG[0x3+(x<<2)]&7)<<8); |
1099 | } |
1100 | } |
1101 | |
1102 | void FCEUI_Sound(int Rate) |
1103 | { |
1104 | FSettings.SndRate=Rate; |
1105 | SetSoundVariables(); |
1106 | } |
1107 | |
1108 | void FCEUI_SetSoundVolume(uint32 volume) |
1109 | { |
92764e62 |
1110 | FSettings.SoundVolume=volume; |
c62d2810 |
1111 | } |
5bd16b94 |
1112 | |
1113 | SFORMAT FCEUSND_STATEINFO[]={ |
1114 | { &fhcnt, 4|FCEUSTATE_RLSB,"FHCN"}, |
1115 | { &fcnt, 1, "FCNT"}, |
1116 | { PSG, 0x10, "PSG"}, |
1117 | { &EnabledChannels, 1, "ENCH"}, |
1118 | { &IRQFrameMode, 1, "IQFM"}, |
1119 | |
1120 | { decvolume, 3, "DECV"}, |
1121 | { &sqnon, 1, "SQNO"}, |
1122 | { &nreg, 2|RLSB, "NREG"}, |
1123 | { &trimode, 1, "TRIM"}, |
1124 | { &tricoop, 1, "TRIC"}, |
1125 | { DecCountTo1, 3,"DCT1"}, |
1126 | |
1127 | { sweepon, 2, "SWEE"}, |
1128 | { &curfreq[0], 4|FCEUSTATE_RLSB,"CRF1"}, |
1129 | { &curfreq[1], 4|FCEUSTATE_RLSB,"CRF2"}, |
1130 | { SweepCount, 2,"SWCT"}, |
1131 | |
1132 | { &SIRQStat, 1, "SIRQ"}, |
1133 | |
1134 | { &DMCacc, 4|FCEUSTATE_RLSB, "5ACC"}, |
1135 | { &DMCBitCount, 1, "5BIT"}, |
1136 | { &DMCAddress, 4|FCEUSTATE_RLSB, "5ADD"}, |
1137 | { &DMCSize, 4|FCEUSTATE_RLSB, "5SIZ"}, |
1138 | { &DMCShift, 1, "5SHF"}, |
1139 | |
1140 | { &DMCHaveDMA, 1, "5HVDM"}, |
1141 | { &DMCHaveSample, 1, "5HVSP"}, |
1142 | |
1143 | { &DMCSizeLatch, 1, "5SZL"}, |
1144 | { &DMCAddressLatch, 1, "5ADL"}, |
1145 | { &DMCFormat, 1, "5FMT"}, |
1146 | { &RawDALatch, 1, "RWDA"}, |
1147 | { 0, } |
1148 | }; |
1149 | |
1150 | void FCEUSND_SaveState(void) |
1151 | { |
1152 | |
1153 | } |
1154 | |
1155 | void FCEUSND_LoadState(int version) |
1156 | { |
1157 | LoadDMCPeriod(DMCFormat&0xF); |
1158 | RawDALatch&=0x7F; |
1159 | DMCAddress&=0x7FFF; |
1160 | } |