| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2002 Xodnizel |
| 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 | #include <stdlib.h> |
| 22 | #include <stdio.h> |
| 23 | |
| 24 | #include <string.h> |
| 25 | |
| 26 | #include "types.h" |
| 27 | #include "x6502.h" |
| 28 | |
| 29 | #include "fce.h" |
| 30 | #include "sound.h" |
| 31 | #include "filter098.h" |
| 32 | #include "state.h" |
| 33 | #include "svga.h" |
| 34 | //#include "wave.h" |
| 35 | |
| 36 | static uint32 wlookup1[32]; |
| 37 | static uint32 wlookup2[203]; |
| 38 | |
| 39 | int32 WaveHi[40000]; |
| 40 | //int32 WaveFinal[2048+512]; // TODO: use WaveFinalMono |
| 41 | |
| 42 | static uint8 TriCount=0; |
| 43 | static uint8 TriMode=0; |
| 44 | |
| 45 | static int32 tristep=0; |
| 46 | |
| 47 | static int32 wlcount[4]={0,0,0,0}; /* Wave length counters. */ |
| 48 | |
| 49 | static uint8 IRQFrameMode=0; /* $4017 / xx000000 */ |
| 50 | //static uint8 PSG[0x10]; |
| 51 | static uint8 RawDALatch=0; /* $4011 0xxxxxxx */ |
| 52 | |
| 53 | static uint8 EnabledChannels=0; /* Byte written to $4015 */ |
| 54 | |
| 55 | typedef struct { |
| 56 | uint8 Speed; |
| 57 | uint8 Mode; /* Fixed volume(1), and loop(2) */ |
| 58 | uint8 DecCountTo1; |
| 59 | uint8 decvolume; |
| 60 | int reloaddec; |
| 61 | } ENVUNIT; |
| 62 | |
| 63 | static ENVUNIT EnvUnits[3]; |
| 64 | |
| 65 | static const int RectDuties[4]={1,2,4,6}; |
| 66 | |
| 67 | static int32 RectDutyCount[2]; |
| 68 | //static uint8 sweepon[2]; |
| 69 | //static int32 curfreq[2]; |
| 70 | //static uint8 SweepCount[2]; |
| 71 | |
| 72 | //static uint16 nreg=0; |
| 73 | |
| 74 | //static uint8 fcnt=0; |
| 75 | //static int32 fhcnt=0; |
| 76 | //static int32 fhinc=0; |
| 77 | |
| 78 | /* Variables exclusively for low-quality sound. */ |
| 79 | static int32 sqacc[2]; |
| 80 | /* LQ variables segment ends. */ |
| 81 | |
| 82 | static int32 lengthcount[4]; |
| 83 | static const uint8 lengthtable[0x20]= |
| 84 | { |
| 85 | 0x5*2,0x7f*2,0xA*2,0x1*2,0x14*2,0x2*2,0x28*2,0x3*2,0x50*2,0x4*2,0x1E*2,0x5*2,0x7*2,0x6*2,0x0E*2,0x7*2, |
| 86 | 0x6*2,0x08*2,0xC*2,0x9*2,0x18*2,0xa*2,0x30*2,0xb*2,0x60*2,0xc*2,0x24*2,0xd*2,0x8*2,0xe*2,0x10*2,0xf*2 |
| 87 | }; |
| 88 | |
| 89 | static const uint32 NoiseFreqTable[0x10]= |
| 90 | { |
| 91 | 2,4,8,0x10,0x20,0x30,0x40,0x50,0x65,0x7f,0xbe,0xfe,0x17d,0x1fc,0x3f9,0x7f2 |
| 92 | }; |
| 93 | |
| 94 | static const uint32 NTSCDMCTable[0x10]= |
| 95 | { |
| 96 | 428,380,340,320,286,254,226,214, |
| 97 | 190,160,142,128,106, 84 ,72,54 |
| 98 | }; |
| 99 | |
| 100 | static const uint32 PALDMCTable[0x10]= |
| 101 | { |
| 102 | 397, 353, 315, 297, 265, 235, 209, 198, |
| 103 | 176, 148, 131, 118, 98, 78, 66, 50, |
| 104 | }; |
| 105 | |
| 106 | // $4010 - Frequency |
| 107 | // $4011 - Actual data outputted |
| 108 | // $4012 - Address register: $c000 + V*64 |
| 109 | // $4013 - Size register: Size in bytes = (V+1)*64 |
| 110 | |
| 111 | static int32 DMCacc=1; |
| 112 | static int32 DMCPeriod=0; |
| 113 | static uint8 DMCBitCount=0; |
| 114 | |
| 115 | static uint8 DMCAddressLatch=0,DMCSizeLatch=0; /* writes to 4012 and 4013 */ |
| 116 | static uint8 DMCFormat=0; /* Write to $4010 */ |
| 117 | |
| 118 | static uint32 DMCAddress=0; |
| 119 | static int32 DMCSize=0; |
| 120 | static uint8 DMCShift=0; |
| 121 | static uint8 SIRQStat=0; |
| 122 | |
| 123 | static char DMCHaveDMA=0; |
| 124 | static uint8 DMCDMABuf=0; |
| 125 | static char DMCHaveSample=0; |
| 126 | |
| 127 | static void Dummyfunc(void) {}; |
| 128 | static void (*DoNoise)(void)=Dummyfunc; |
| 129 | static void (*DoTriangle)(void)=Dummyfunc; |
| 130 | static void (*DoPCM)(void)=Dummyfunc; |
| 131 | static void (*DoSQ1)(void)=Dummyfunc; |
| 132 | static void (*DoSQ2)(void)=Dummyfunc; |
| 133 | |
| 134 | static uint32 ChannelBC[5]; |
| 135 | |
| 136 | static void LoadDMCPeriod(uint8 V) |
| 137 | { |
| 138 | if(PAL) |
| 139 | DMCPeriod=PALDMCTable[V]; |
| 140 | else |
| 141 | DMCPeriod=NTSCDMCTable[V]; |
| 142 | } |
| 143 | |
| 144 | static void PrepDPCM() |
| 145 | { |
| 146 | DMCAddress=0x4000+(DMCAddressLatch<<6); |
| 147 | DMCSize=(DMCSizeLatch<<4)+1; |
| 148 | } |
| 149 | |
| 150 | /* Instantaneous? Maybe the new freq value is being calculated all of the time... */ |
| 151 | |
| 152 | static int FASTAPASS(2) CheckFreq(uint32 cf, uint8 sr) |
| 153 | { |
| 154 | uint32 mod; |
| 155 | if(!(sr&0x8)) |
| 156 | { |
| 157 | mod=cf>>(sr&7); |
| 158 | if((mod+cf)&0x800) |
| 159 | return(0); |
| 160 | } |
| 161 | return(1); |
| 162 | } |
| 163 | |
| 164 | static void SQReload(int x, uint8 V) |
| 165 | { |
| 166 | if(EnabledChannels&(1<<x)) |
| 167 | { |
| 168 | if(x) |
| 169 | DoSQ2(); |
| 170 | else |
| 171 | DoSQ1(); |
| 172 | lengthcount[x]=lengthtable[(V>>3)&0x1f]; |
| 173 | } |
| 174 | |
| 175 | sweepon[x]=PSG[(x<<2)|1]&0x80; |
| 176 | curfreq[x]=PSG[(x<<2)|0x2]|((V&7)<<8); |
| 177 | SweepCount[x]=((PSG[(x<<2)|0x1]>>4)&7)+1; |
| 178 | |
| 179 | RectDutyCount[x]=7; |
| 180 | EnvUnits[x].reloaddec=1; |
| 181 | //reloadfreq[x]=1; |
| 182 | } |
| 183 | |
| 184 | static DECLFW(Write_PSG) |
| 185 | { |
| 186 | A&=0x1F; |
| 187 | switch(A) |
| 188 | { |
| 189 | case 0x0:DoSQ1(); |
| 190 | EnvUnits[0].Mode=(V&0x30)>>4; |
| 191 | EnvUnits[0].Speed=(V&0xF); |
| 192 | break; |
| 193 | case 0x1: |
| 194 | sweepon[0]=V&0x80; |
| 195 | break; |
| 196 | case 0x2: |
| 197 | DoSQ1(); |
| 198 | curfreq[0]&=0xFF00; |
| 199 | curfreq[0]|=V; |
| 200 | break; |
| 201 | case 0x3: |
| 202 | SQReload(0,V); |
| 203 | break; |
| 204 | case 0x4: |
| 205 | DoSQ2(); |
| 206 | EnvUnits[1].Mode=(V&0x30)>>4; |
| 207 | EnvUnits[1].Speed=(V&0xF); |
| 208 | break; |
| 209 | case 0x5: |
| 210 | sweepon[1]=V&0x80; |
| 211 | break; |
| 212 | case 0x6:DoSQ2(); |
| 213 | curfreq[1]&=0xFF00; |
| 214 | curfreq[1]|=V; |
| 215 | break; |
| 216 | case 0x7: |
| 217 | SQReload(1,V); |
| 218 | break; |
| 219 | case 0xa:DoTriangle(); |
| 220 | break; |
| 221 | case 0xb: |
| 222 | DoTriangle(); |
| 223 | if(EnabledChannels&0x4) |
| 224 | lengthcount[2]=lengthtable[(V>>3)&0x1f]; |
| 225 | TriMode=1; // Load mode |
| 226 | break; |
| 227 | case 0xC:DoNoise(); |
| 228 | EnvUnits[2].Mode=(V&0x30)>>4; |
| 229 | EnvUnits[2].Speed=(V&0xF); |
| 230 | break; |
| 231 | case 0xE:DoNoise(); |
| 232 | break; |
| 233 | case 0xF: |
| 234 | DoNoise(); |
| 235 | if(EnabledChannels&0x8) |
| 236 | lengthcount[3]=lengthtable[(V>>3)&0x1f]; |
| 237 | EnvUnits[2].reloaddec=1; |
| 238 | break; |
| 239 | case 0x10:DoPCM(); |
| 240 | LoadDMCPeriod(V&0xF); |
| 241 | |
| 242 | if(SIRQStat&0x80) |
| 243 | { |
| 244 | if(!(V&0x80)) |
| 245 | { |
| 246 | X6502_IRQEnd(FCEU_IQDPCM); |
| 247 | SIRQStat&=~0x80; |
| 248 | } |
| 249 | else X6502_IRQBegin(FCEU_IQDPCM); |
| 250 | } |
| 251 | break; |
| 252 | } |
| 253 | PSG[A]=V; |
| 254 | } |
| 255 | |
| 256 | static DECLFW(Write_DMCRegs) |
| 257 | { |
| 258 | A&=0xF; |
| 259 | |
| 260 | switch(A) |
| 261 | { |
| 262 | case 0x00:DoPCM(); |
| 263 | LoadDMCPeriod(V&0xF); |
| 264 | |
| 265 | if(SIRQStat&0x80) |
| 266 | { |
| 267 | if(!(V&0x80)) |
| 268 | { |
| 269 | X6502_IRQEnd(FCEU_IQDPCM); |
| 270 | SIRQStat&=~0x80; |
| 271 | } |
| 272 | else X6502_IRQBegin(FCEU_IQDPCM); |
| 273 | } |
| 274 | DMCFormat=V; |
| 275 | break; |
| 276 | case 0x01:DoPCM(); |
| 277 | RawDALatch=V&0x7F; |
| 278 | break; |
| 279 | case 0x02:DMCAddressLatch=V;break; |
| 280 | case 0x03:DMCSizeLatch=V;break; |
| 281 | } |
| 282 | |
| 283 | |
| 284 | } |
| 285 | |
| 286 | static DECLFW(StatusWrite) |
| 287 | { |
| 288 | int x; |
| 289 | |
| 290 | DoSQ1(); |
| 291 | DoSQ2(); |
| 292 | DoTriangle(); |
| 293 | DoNoise(); |
| 294 | DoPCM(); |
| 295 | for(x=0;x<4;x++) |
| 296 | if(!(V&(1<<x))) lengthcount[x]=0; /* Force length counters to 0. */ |
| 297 | |
| 298 | if(V&0x10) |
| 299 | { |
| 300 | if(!DMCSize) |
| 301 | PrepDPCM(); |
| 302 | } |
| 303 | else |
| 304 | { |
| 305 | DMCSize=0; |
| 306 | } |
| 307 | SIRQStat&=~0x80; |
| 308 | X6502_IRQEnd(FCEU_IQDPCM); |
| 309 | EnabledChannels=V&0x1F; |
| 310 | } |
| 311 | |
| 312 | static DECLFR(StatusRead) |
| 313 | { |
| 314 | int x; |
| 315 | uint8 ret; |
| 316 | |
| 317 | ret=SIRQStat; |
| 318 | |
| 319 | for(x=0;x<4;x++) ret|=lengthcount[x]?(1<<x):0; |
| 320 | if(DMCSize) ret|=0x10; |
| 321 | |
| 322 | #ifdef FCEUDEF_DEBUGGER |
| 323 | if(!fceuindbg) |
| 324 | #endif |
| 325 | { |
| 326 | SIRQStat&=~0x40; |
| 327 | X6502_IRQEnd(FCEU_IQFCOUNT); |
| 328 | } |
| 329 | return ret; |
| 330 | } |
| 331 | |
| 332 | static void FASTAPASS(1) FrameSoundStuff(int V) |
| 333 | { |
| 334 | int P; |
| 335 | |
| 336 | DoSQ1(); |
| 337 | DoSQ2(); |
| 338 | DoNoise(); |
| 339 | DoTriangle(); |
| 340 | |
| 341 | if(!(V&1)) /* Envelope decay, linear counter, length counter, freq sweep */ |
| 342 | { |
| 343 | if(!(PSG[8]&0x80)) |
| 344 | if(lengthcount[2]>0) |
| 345 | lengthcount[2]--; |
| 346 | |
| 347 | if(!(PSG[0xC]&0x20)) /* Make sure loop flag is not set. */ |
| 348 | if(lengthcount[3]>0) |
| 349 | lengthcount[3]--; |
| 350 | |
| 351 | for(P=0;P<2;P++) |
| 352 | { |
| 353 | if(!(PSG[P<<2]&0x20)) /* Make sure loop flag is not set. */ |
| 354 | if(lengthcount[P]>0) |
| 355 | lengthcount[P]--; |
| 356 | |
| 357 | /* Frequency Sweep Code Here */ |
| 358 | /* xxxx 0000 */ |
| 359 | /* xxxx = hz. 120/(x+1)*/ |
| 360 | if(sweepon[P]) |
| 361 | { |
| 362 | int32 mod=0; |
| 363 | |
| 364 | if(SweepCount[P]>0) SweepCount[P]--; |
| 365 | if(SweepCount[P]<=0) |
| 366 | { |
| 367 | SweepCount[P]=((PSG[(P<<2)+0x1]>>4)&7)+1; //+1; |
| 368 | if(PSG[(P<<2)+0x1]&0x8) |
| 369 | { |
| 370 | mod-=(P^1)+((curfreq[P])>>(PSG[(P<<2)+0x1]&7)); |
| 371 | if(curfreq[P] && (PSG[(P<<2)+0x1]&7)/* && sweepon[P]&0x80*/) |
| 372 | { |
| 373 | curfreq[P]+=mod; |
| 374 | } |
| 375 | } |
| 376 | else |
| 377 | { |
| 378 | mod=curfreq[P]>>(PSG[(P<<2)+0x1]&7); |
| 379 | if((mod+curfreq[P])&0x800) |
| 380 | { |
| 381 | sweepon[P]=0; |
| 382 | curfreq[P]=0; |
| 383 | } |
| 384 | else |
| 385 | { |
| 386 | if(curfreq[P] && (PSG[(P<<2)+0x1]&7)/* && sweepon[P]&0x80*/) |
| 387 | { |
| 388 | curfreq[P]+=mod; |
| 389 | } |
| 390 | } |
| 391 | } |
| 392 | } |
| 393 | } |
| 394 | else /* Sweeping is disabled: */ |
| 395 | { |
| 396 | //curfreq[P]&=0xFF00; |
| 397 | //curfreq[P]|=PSG[(P<<2)|0x2]; //|((PSG[(P<<2)|3]&7)<<8); |
| 398 | } |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | /* Now do envelope decay + linear counter. */ |
| 403 | |
| 404 | if(TriMode) // In load mode? |
| 405 | TriCount=PSG[0x8]&0x7F; |
| 406 | else if(TriCount) |
| 407 | TriCount--; |
| 408 | |
| 409 | if(!(PSG[0x8]&0x80)) |
| 410 | TriMode=0; |
| 411 | |
| 412 | for(P=0;P<3;P++) |
| 413 | { |
| 414 | if(EnvUnits[P].reloaddec) |
| 415 | { |
| 416 | EnvUnits[P].decvolume=0xF; |
| 417 | EnvUnits[P].DecCountTo1=EnvUnits[P].Speed+1; |
| 418 | EnvUnits[P].reloaddec=0; |
| 419 | continue; |
| 420 | } |
| 421 | |
| 422 | if(EnvUnits[P].DecCountTo1>0) EnvUnits[P].DecCountTo1--; |
| 423 | if(EnvUnits[P].DecCountTo1==0) |
| 424 | { |
| 425 | EnvUnits[P].DecCountTo1=EnvUnits[P].Speed+1; |
| 426 | if(EnvUnits[P].decvolume || (EnvUnits[P].Mode&0x2)) |
| 427 | { |
| 428 | EnvUnits[P].decvolume--; |
| 429 | EnvUnits[P].decvolume&=0xF; |
| 430 | } |
| 431 | } |
| 432 | } |
| 433 | } |
| 434 | |
| 435 | static void FrameSoundUpdate098(void) |
| 436 | { |
| 437 | // Linear counter: Bit 0-6 of $4008 |
| 438 | // Length counter: Bit 4-7 of $4003, $4007, $400b, $400f |
| 439 | |
| 440 | if(!fcnt && !(IRQFrameMode&0x3)) |
| 441 | { |
| 442 | SIRQStat|=0x40; |
| 443 | X6502_IRQBegin(FCEU_IQFCOUNT); |
| 444 | } |
| 445 | |
| 446 | if(fcnt==3) |
| 447 | { |
| 448 | if(IRQFrameMode&0x2) |
| 449 | fhcnt+=fhinc; |
| 450 | } |
| 451 | FrameSoundStuff(fcnt); |
| 452 | fcnt=(fcnt+1)&3; |
| 453 | } |
| 454 | |
| 455 | |
| 456 | static INLINE void tester(void) |
| 457 | { |
| 458 | if(DMCBitCount==0) |
| 459 | { |
| 460 | if(!DMCHaveDMA) |
| 461 | DMCHaveSample=0; |
| 462 | else |
| 463 | { |
| 464 | DMCHaveSample=1; |
| 465 | DMCShift=DMCDMABuf; |
| 466 | DMCHaveDMA=0; |
| 467 | } |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | static INLINE void DMCDMA(void) |
| 472 | { |
| 473 | if(DMCSize && !DMCHaveDMA) |
| 474 | { |
| 475 | /* |
| 476 | X6502_DMR(0x8000+DMCAddress); |
| 477 | X6502_DMR(0x8000+DMCAddress); |
| 478 | X6502_DMR(0x8000+DMCAddress); |
| 479 | DMCDMABuf=X6502_DMR(0x8000+DMCAddress); |
| 480 | */ |
| 481 | DMCDMABuf=ARead[0x8000](0x8000); |
| 482 | X6502_AddCycles(4); |
| 483 | |
| 484 | DMCHaveDMA=1; |
| 485 | DMCAddress=(DMCAddress+1)&0x7fff; |
| 486 | DMCSize--; |
| 487 | if(!DMCSize) |
| 488 | { |
| 489 | if(DMCFormat&0x40) |
| 490 | PrepDPCM(); |
| 491 | else |
| 492 | { |
| 493 | SIRQStat|=0x80; |
| 494 | if(DMCFormat&0x80) |
| 495 | X6502_IRQBegin(FCEU_IQDPCM); |
| 496 | } |
| 497 | } |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | void FASTAPASS(1) FCEU_SoundCPUHook098(int cycles) |
| 502 | { |
| 503 | fhcnt-=cycles*48; |
| 504 | if(fhcnt<=0) |
| 505 | { |
| 506 | FrameSoundUpdate098(); |
| 507 | fhcnt+=fhinc; |
| 508 | } |
| 509 | |
| 510 | DMCDMA(); |
| 511 | DMCacc-=cycles; |
| 512 | |
| 513 | while(DMCacc<=0) |
| 514 | { |
| 515 | if(DMCHaveSample) |
| 516 | { |
| 517 | uint8 bah=RawDALatch; |
| 518 | int t=((DMCShift&1)<<2)-2; |
| 519 | |
| 520 | /* Unbelievably ugly hack */ |
| 521 | if(FSettings.SndRate) |
| 522 | { |
| 523 | soundtsoffs+=DMCacc; |
| 524 | DoPCM(); |
| 525 | soundtsoffs-=DMCacc; |
| 526 | } |
| 527 | RawDALatch+=t; |
| 528 | if(RawDALatch&0x80) |
| 529 | RawDALatch=bah; |
| 530 | } |
| 531 | |
| 532 | DMCacc+=DMCPeriod; |
| 533 | DMCBitCount=(DMCBitCount+1)&7; |
| 534 | DMCShift>>=1; |
| 535 | tester(); |
| 536 | } |
| 537 | } |
| 538 | |
| 539 | #if 0 |
| 540 | static void RDoPCM(void) |
| 541 | { |
| 542 | int32 V; |
| 543 | |
| 544 | for(V=ChannelBC[4];V<SOUNDTS;V++) |
| 545 | WaveHi[V]+=RawDALatch<<16; |
| 546 | |
| 547 | ChannelBC[4]=SOUNDTS; |
| 548 | } |
| 549 | |
| 550 | /* This has the correct phase. Don't mess with it. */ |
| 551 | static INLINE void RDoSQ(int x) |
| 552 | { |
| 553 | int32 V; |
| 554 | int32 amp; |
| 555 | int32 rthresh; |
| 556 | int32 *D; |
| 557 | int32 currdc; |
| 558 | int32 cf; |
| 559 | int32 rc; |
| 560 | |
| 561 | if(curfreq[x]<8 || curfreq[x]>0x7ff) |
| 562 | goto endit; |
| 563 | if(!CheckFreq(curfreq[x],PSG[(x<<2)|0x1])) |
| 564 | goto endit; |
| 565 | if(!lengthcount[x]) |
| 566 | goto endit; |
| 567 | |
| 568 | if(EnvUnits[x].Mode&0x1) |
| 569 | amp=EnvUnits[x].Speed; |
| 570 | else |
| 571 | amp=EnvUnits[x].decvolume; |
| 572 | // printf("%d\n",amp); |
| 573 | amp<<=24; |
| 574 | |
| 575 | rthresh=RectDuties[(PSG[(x<<2)]&0xC0)>>6]; |
| 576 | |
| 577 | D=&WaveHi[ChannelBC[x]]; |
| 578 | V=SOUNDTS-ChannelBC[x]; |
| 579 | |
| 580 | currdc=RectDutyCount[x]; |
| 581 | cf=(curfreq[x]+1)*2; |
| 582 | rc=wlcount[x]; |
| 583 | |
| 584 | while(V>0) |
| 585 | { |
| 586 | if(currdc<rthresh) |
| 587 | *D+=amp; |
| 588 | rc--; |
| 589 | if(!rc) |
| 590 | { |
| 591 | rc=cf; |
| 592 | currdc=(currdc+1)&7; |
| 593 | } |
| 594 | V--; |
| 595 | D++; |
| 596 | } |
| 597 | |
| 598 | RectDutyCount[x]=currdc; |
| 599 | wlcount[x]=rc; |
| 600 | |
| 601 | endit: |
| 602 | ChannelBC[x]=SOUNDTS; |
| 603 | } |
| 604 | |
| 605 | static void RDoSQ1(void) |
| 606 | { |
| 607 | RDoSQ(0); |
| 608 | } |
| 609 | |
| 610 | static void RDoSQ2(void) |
| 611 | { |
| 612 | RDoSQ(1); |
| 613 | } |
| 614 | #endif |
| 615 | |
| 616 | static void RDoSQLQ(void) |
| 617 | { |
| 618 | int32 start,end; |
| 619 | int32 V; |
| 620 | int32 amp[2]; |
| 621 | int32 rthresh[2]; |
| 622 | int32 freq[2]; |
| 623 | int x; |
| 624 | int32 inie[2]; |
| 625 | |
| 626 | int32 ttable[2][8]; |
| 627 | int32 totalout; |
| 628 | |
| 629 | start=ChannelBC[0]; |
| 630 | end=(SOUNDTS<<16)/soundtsinc; |
| 631 | if(end<=start) return; |
| 632 | ChannelBC[0]=end; |
| 633 | |
| 634 | for(x=0;x<2;x++) |
| 635 | { |
| 636 | int y; |
| 637 | |
| 638 | inie[x]=nesincsize; |
| 639 | if(curfreq[x]<8 || curfreq[x]>0x7ff) |
| 640 | inie[x]=0; |
| 641 | if(!CheckFreq(curfreq[x],PSG[(x<<2)|0x1])) |
| 642 | inie[x]=0; |
| 643 | if(!lengthcount[x]) |
| 644 | inie[x]=0; |
| 645 | |
| 646 | if(EnvUnits[x].Mode&0x1) |
| 647 | amp[x]=EnvUnits[x].Speed; |
| 648 | else |
| 649 | amp[x]=EnvUnits[x].decvolume; |
| 650 | |
| 651 | if(!inie[x]) amp[x]=0; /* Correct? Buzzing in MM2, others otherwise... */ |
| 652 | |
| 653 | rthresh[x]=RectDuties[(PSG[x*4]&0xC0)>>6]; |
| 654 | |
| 655 | for(y=0;y<8;y++) |
| 656 | { |
| 657 | if(y < rthresh[x]) |
| 658 | ttable[x][y] = amp[x]; |
| 659 | else |
| 660 | ttable[x][y] = 0; |
| 661 | } |
| 662 | freq[x]=(curfreq[x]+1)<<1; |
| 663 | freq[x]<<=17; |
| 664 | } |
| 665 | |
| 666 | totalout = wlookup1[ ttable[0][RectDutyCount[0]] + ttable[1][RectDutyCount[1]] ]; |
| 667 | |
| 668 | if(!inie[0] && !inie[1]) |
| 669 | { |
| 670 | for(V=start;V<end;V++) |
| 671 | ((int32 *)Wave)[V>>4]+=totalout; |
| 672 | } |
| 673 | else |
| 674 | for(V=start;V<end;V++) |
| 675 | { |
| 676 | //int tmpamp=0; |
| 677 | //if(RectDutyCount[0]<rthresh[0]) |
| 678 | // tmpamp=amp[0]; |
| 679 | //if(RectDutyCount[1]<rthresh[1]) |
| 680 | // tmpamp+=amp[1]; |
| 681 | //tmpamp=wlookup1[tmpamp]; |
| 682 | //tmpamp = wlookup1[ ttable[0][RectDutyCount[0]] + ttable[1][RectDutyCount[1]] ]; |
| 683 | |
| 684 | ((int32 *)Wave)[V>>4]+=totalout; //tmpamp; |
| 685 | |
| 686 | sqacc[0]-=inie[0]; |
| 687 | sqacc[1]-=inie[1]; |
| 688 | |
| 689 | if(sqacc[0]<=0) |
| 690 | { |
| 691 | rea: |
| 692 | sqacc[0]+=freq[0]; |
| 693 | RectDutyCount[0]=(RectDutyCount[0]+1)&7; |
| 694 | if(sqacc[0]<=0) goto rea; |
| 695 | totalout = wlookup1[ ttable[0][RectDutyCount[0]] + ttable[1][RectDutyCount[1]] ]; |
| 696 | } |
| 697 | |
| 698 | if(sqacc[1]<=0) |
| 699 | { |
| 700 | rea2: |
| 701 | sqacc[1]+=freq[1]; |
| 702 | RectDutyCount[1]=(RectDutyCount[1]+1)&7; |
| 703 | if(sqacc[1]<=0) goto rea2; |
| 704 | totalout = wlookup1[ ttable[0][RectDutyCount[0]] + ttable[1][RectDutyCount[1]] ]; |
| 705 | } |
| 706 | } |
| 707 | } |
| 708 | |
| 709 | #if 0 |
| 710 | static void RDoTriangle(void) |
| 711 | { |
| 712 | int32 V; |
| 713 | int32 tcout; |
| 714 | |
| 715 | tcout=(tristep&0xF); |
| 716 | if(!(tristep&0x10)) tcout^=0xF; |
| 717 | tcout=(tcout*3) << 16; //(tcout<<1); |
| 718 | |
| 719 | if(!lengthcount[2] || !TriCount) |
| 720 | { /* Counter is halted, but we still need to output. */ |
| 721 | int32 *start = &WaveHi[ChannelBC[2]]; |
| 722 | int32 count = SOUNDTS - ChannelBC[2]; |
| 723 | while(count--) |
| 724 | { |
| 725 | *start += tcout; |
| 726 | start++; |
| 727 | } |
| 728 | //for(V=ChannelBC[2];V<SOUNDTS;V++) |
| 729 | // WaveHi[V]+=tcout; |
| 730 | } |
| 731 | else |
| 732 | for(V=ChannelBC[2];V<SOUNDTS;V++) |
| 733 | { |
| 734 | WaveHi[V]+=tcout; |
| 735 | wlcount[2]--; |
| 736 | if(!wlcount[2]) |
| 737 | { |
| 738 | wlcount[2]=(PSG[0xa]|((PSG[0xb]&7)<<8))+1; |
| 739 | tristep++; |
| 740 | tcout=(tristep&0xF); |
| 741 | if(!(tristep&0x10)) tcout^=0xF; |
| 742 | tcout=(tcout*3) << 16; |
| 743 | } |
| 744 | } |
| 745 | |
| 746 | ChannelBC[2]=SOUNDTS; |
| 747 | } |
| 748 | #endif |
| 749 | |
| 750 | static void RDoTriangleNoisePCMLQ(void) |
| 751 | { |
| 752 | static uint32 tcout=0; |
| 753 | static int32 triacc=0; |
| 754 | static int32 noiseacc=0; |
| 755 | |
| 756 | int32 V; |
| 757 | int32 start,end; |
| 758 | int32 freq[2]; |
| 759 | int32 inie[2]; |
| 760 | uint32 amptab[2]; |
| 761 | uint32 noiseout; |
| 762 | int nshift; |
| 763 | |
| 764 | int32 totalout; |
| 765 | |
| 766 | start=ChannelBC[2]; |
| 767 | end=(SOUNDTS<<16)/soundtsinc; |
| 768 | if(end<=start) return; |
| 769 | ChannelBC[2]=end; |
| 770 | |
| 771 | inie[0]=inie[1]=nesincsize; |
| 772 | |
| 773 | freq[0]=(((PSG[0xa]|((PSG[0xb]&7)<<8))+1)); |
| 774 | |
| 775 | if(!lengthcount[2] || !TriCount || freq[0]<=4) |
| 776 | inie[0]=0; |
| 777 | |
| 778 | freq[0]<<=17; |
| 779 | if(EnvUnits[2].Mode&0x1) |
| 780 | amptab[0]=EnvUnits[2].Speed; |
| 781 | else |
| 782 | amptab[0]=EnvUnits[2].decvolume; |
| 783 | amptab[1]=0; |
| 784 | amptab[0]<<=1; |
| 785 | |
| 786 | if(!lengthcount[3]) |
| 787 | amptab[0]=inie[1]=0; /* Quick hack speedup, set inie[1] to 0 */ |
| 788 | |
| 789 | noiseout=amptab[(nreg>>0xe)&1]; |
| 790 | |
| 791 | if(PSG[0xE]&0x80) |
| 792 | nshift=8; |
| 793 | else |
| 794 | nshift=13; |
| 795 | |
| 796 | |
| 797 | totalout = wlookup2[tcout+noiseout+RawDALatch]; |
| 798 | |
| 799 | if(inie[0] && inie[1]) |
| 800 | { |
| 801 | for(V=start;V<end;V++) |
| 802 | { |
| 803 | ((int32 *)Wave)[V>>4]+=totalout; |
| 804 | |
| 805 | triacc-=inie[0]; |
| 806 | noiseacc-=inie[1]; |
| 807 | |
| 808 | if(triacc<=0) |
| 809 | { |
| 810 | rea: |
| 811 | triacc+=freq[0]; //t; |
| 812 | tristep=(tristep+1)&0x1F; |
| 813 | if(triacc<=0) goto rea; |
| 814 | tcout=(tristep&0xF); |
| 815 | if(!(tristep&0x10)) tcout^=0xF; |
| 816 | tcout=tcout*3; |
| 817 | totalout = wlookup2[tcout+noiseout+RawDALatch]; |
| 818 | } |
| 819 | |
| 820 | if(noiseacc<=0) |
| 821 | { |
| 822 | rea2: |
| 823 | noiseacc+=NoiseFreqTable[PSG[0xE]&0xF]<<(16+2); |
| 824 | nreg=(nreg<<1)+(((nreg>>nshift)^(nreg>>14))&1); |
| 825 | nreg&=0x7fff; |
| 826 | noiseout=amptab[(nreg>>0xe)]; |
| 827 | if(noiseacc<=0) goto rea2; |
| 828 | totalout = wlookup2[tcout+noiseout+RawDALatch]; |
| 829 | } /* noiseacc<=0 */ |
| 830 | } /* for(V=... */ |
| 831 | } |
| 832 | else if(inie[0]) |
| 833 | { |
| 834 | for(V=start;V<end;V++) |
| 835 | { |
| 836 | ((int32 *)Wave)[V>>4]+=totalout; |
| 837 | |
| 838 | triacc-=inie[0]; |
| 839 | |
| 840 | if(triacc<=0) |
| 841 | { |
| 842 | area: |
| 843 | triacc+=freq[0]; //t; |
| 844 | tristep=(tristep+1)&0x1F; |
| 845 | if(triacc<=0) goto area; |
| 846 | tcout=(tristep&0xF); |
| 847 | if(!(tristep&0x10)) tcout^=0xF; |
| 848 | tcout=tcout*3; |
| 849 | totalout = wlookup2[tcout+noiseout+RawDALatch]; |
| 850 | } |
| 851 | } |
| 852 | } |
| 853 | else if(inie[1]) |
| 854 | { |
| 855 | for(V=start;V<end;V++) |
| 856 | { |
| 857 | ((int32 *)Wave)[V>>4]+=totalout; |
| 858 | noiseacc-=inie[1]; |
| 859 | if(noiseacc<=0) |
| 860 | { |
| 861 | area2: |
| 862 | noiseacc+=NoiseFreqTable[PSG[0xE]&0xF]<<(16+2); |
| 863 | nreg=(nreg<<1)+(((nreg>>nshift)^(nreg>>14))&1); |
| 864 | nreg&=0x7fff; |
| 865 | noiseout=amptab[(nreg>>0xe)]; |
| 866 | if(noiseacc<=0) goto area2; |
| 867 | totalout = wlookup2[tcout+noiseout+RawDALatch]; |
| 868 | } /* noiseacc<=0 */ |
| 869 | } |
| 870 | } |
| 871 | else |
| 872 | { |
| 873 | for(V=start;V<end;V++) |
| 874 | ((int32 *)Wave)[V>>4]+=totalout; |
| 875 | } |
| 876 | } |
| 877 | |
| 878 | |
| 879 | #if 0 |
| 880 | static void RDoNoise(void) |
| 881 | { |
| 882 | int32 V; |
| 883 | int32 outo; |
| 884 | uint32 amptab[2]; |
| 885 | |
| 886 | if(EnvUnits[2].Mode&0x1) |
| 887 | amptab[0]=EnvUnits[2].Speed; |
| 888 | else |
| 889 | amptab[0]=EnvUnits[2].decvolume; |
| 890 | |
| 891 | amptab[0]<<=16; |
| 892 | amptab[1]=0; |
| 893 | |
| 894 | amptab[0]<<=1; |
| 895 | |
| 896 | outo=amptab[nreg&1]; //(nreg>>0xe)&1]; |
| 897 | |
| 898 | if(!lengthcount[3]) |
| 899 | { |
| 900 | outo=amptab[0]=0; |
| 901 | } |
| 902 | |
| 903 | if(PSG[0xE]&0x80) // "short" noise |
| 904 | for(V=ChannelBC[3];V<SOUNDTS;V++) |
| 905 | { |
| 906 | WaveHi[V]+=outo; |
| 907 | wlcount[3]--; |
| 908 | if(!wlcount[3]) |
| 909 | { |
| 910 | uint8 feedback; |
| 911 | wlcount[3]=NoiseFreqTable[PSG[0xE]&0xF]<<1; |
| 912 | feedback=((nreg>>8)&1)^((nreg>>14)&1); |
| 913 | nreg=(nreg<<1)+feedback; |
| 914 | nreg&=0x7fff; |
| 915 | outo=amptab[(nreg>>0xe)&1]; |
| 916 | } |
| 917 | } |
| 918 | else |
| 919 | for(V=ChannelBC[3];V<SOUNDTS;V++) |
| 920 | { |
| 921 | WaveHi[V]+=outo; |
| 922 | wlcount[3]--; |
| 923 | if(!wlcount[3]) |
| 924 | { |
| 925 | uint8 feedback; |
| 926 | wlcount[3]=NoiseFreqTable[PSG[0xE]&0xF]<<1; |
| 927 | feedback=((nreg>>13)&1)^((nreg>>14)&1); |
| 928 | nreg=(nreg<<1)+feedback; |
| 929 | nreg&=0x7fff; |
| 930 | outo=amptab[(nreg>>0xe)&1]; |
| 931 | } |
| 932 | } |
| 933 | ChannelBC[3]=SOUNDTS; |
| 934 | } |
| 935 | #endif |
| 936 | |
| 937 | static DECLFW(Write_IRQFM) |
| 938 | { |
| 939 | V=(V&0xC0)>>6; |
| 940 | fcnt=0; |
| 941 | if(V&0x2) |
| 942 | FrameSoundUpdate098(); |
| 943 | fcnt=1; |
| 944 | fhcnt=fhinc; |
| 945 | X6502_IRQEnd(FCEU_IQFCOUNT); |
| 946 | SIRQStat&=~0x40; |
| 947 | IRQFrameMode=V; |
| 948 | } |
| 949 | |
| 950 | void SetNESSoundMap098(void) |
| 951 | { |
| 952 | SetWriteHandler(0x4000,0x400F,Write_PSG); |
| 953 | SetWriteHandler(0x4010,0x4013,Write_DMCRegs); |
| 954 | SetWriteHandler(0x4017,0x4017,Write_IRQFM); |
| 955 | |
| 956 | SetWriteHandler(0x4015,0x4015,StatusWrite); |
| 957 | SetReadHandler(0x4015,0x4015,StatusRead); |
| 958 | } |
| 959 | |
| 960 | static int32 inbuf=0; |
| 961 | int FlushEmulateSound098(void) |
| 962 | { |
| 963 | int x; |
| 964 | int32 end,left; |
| 965 | |
| 966 | if(!timestamp) return(0); |
| 967 | |
| 968 | if(!FSettings.SndRate) |
| 969 | { |
| 970 | left=0; |
| 971 | end=0; |
| 972 | goto nosoundo; |
| 973 | } |
| 974 | |
| 975 | DoSQ1(); |
| 976 | DoSQ2(); |
| 977 | DoTriangle(); |
| 978 | DoNoise(); |
| 979 | DoPCM(); |
| 980 | |
| 981 | #if 0 |
| 982 | if(FSettings.soundq>=1) |
| 983 | { |
| 984 | int32 *tmpo=&WaveHi[soundtsoffs]; |
| 985 | |
| 986 | if(GameExpSound.HiFill) GameExpSound.HiFill(); |
| 987 | |
| 988 | for(x=timestamp;x;x--) |
| 989 | { |
| 990 | uint32 b=*tmpo; |
| 991 | *tmpo=(b&65535)+wlookup2[(b>>16)&255]+wlookup1[b>>24]; |
| 992 | tmpo++; |
| 993 | } |
| 994 | end=NeoFilterSound(WaveHi,WaveFinal,SOUNDTS,&left); |
| 995 | |
| 996 | memmove(WaveHi,WaveHi+SOUNDTS-left,left*sizeof(uint32)); |
| 997 | memset(WaveHi+left,0,sizeof(WaveHi)-left*sizeof(uint32)); |
| 998 | |
| 999 | if(GameExpSound.HiSync) GameExpSound.HiSync(left); |
| 1000 | for(x=0;x<5;x++) |
| 1001 | ChannelBC[x]=left; |
| 1002 | } |
| 1003 | else |
| 1004 | #endif |
| 1005 | { |
| 1006 | end=(SOUNDTS<<16)/soundtsinc; |
| 1007 | if(GameExpSound.Fill) |
| 1008 | GameExpSound.Fill(end&0xF); |
| 1009 | |
| 1010 | SexyFilter((int32 *)Wave,WaveFinalMono,end>>4); |
| 1011 | |
| 1012 | if(end&0xF) |
| 1013 | Wave[0]=Wave[(end>>4)]; |
| 1014 | Wave[end>>4]=0; |
| 1015 | } |
| 1016 | nosoundo: |
| 1017 | |
| 1018 | #if 0 |
| 1019 | if(FSettings.soundq>=1) |
| 1020 | { |
| 1021 | soundtsoffs=left; |
| 1022 | } |
| 1023 | else |
| 1024 | #endif |
| 1025 | { |
| 1026 | for(x=0;x<5;x++) |
| 1027 | ChannelBC[x]=end&0xF; |
| 1028 | soundtsoffs = (soundtsinc*(end&0xF))>>16; |
| 1029 | end>>=4; |
| 1030 | } |
| 1031 | inbuf=end; |
| 1032 | |
| 1033 | return(end); |
| 1034 | } |
| 1035 | |
| 1036 | /* FIXME: Find out what sound registers get reset on reset. I know $4001/$4005 don't, |
| 1037 | due to that whole MegaMan 2 Game Genie thing. |
| 1038 | */ |
| 1039 | |
| 1040 | void FCEUSND_Reset(void) |
| 1041 | { |
| 1042 | int x; |
| 1043 | |
| 1044 | IRQFrameMode=0x0; |
| 1045 | fhcnt=fhinc; |
| 1046 | fcnt=0; |
| 1047 | |
| 1048 | nreg=1; |
| 1049 | for(x=0;x<2;x++) |
| 1050 | { |
| 1051 | wlcount[x]=2048; |
| 1052 | if(nesincsize) // lq mode |
| 1053 | sqacc[x]=((uint32)2048<<17)/nesincsize; |
| 1054 | else |
| 1055 | sqacc[x]=1; |
| 1056 | sweepon[x]=0; |
| 1057 | curfreq[x]=0; |
| 1058 | } |
| 1059 | wlcount[2]=1; //2048; |
| 1060 | wlcount[3]=2048; |
| 1061 | DMCHaveDMA=DMCHaveSample=0; |
| 1062 | SIRQStat=0x00; |
| 1063 | |
| 1064 | RawDALatch=0x00; |
| 1065 | TriCount=0; |
| 1066 | TriMode=0; |
| 1067 | tristep=0; |
| 1068 | EnabledChannels=0; |
| 1069 | for(x=0;x<4;x++) |
| 1070 | lengthcount[x]=0; |
| 1071 | |
| 1072 | DMCAddressLatch=0; |
| 1073 | DMCSizeLatch=0; |
| 1074 | DMCFormat=0; |
| 1075 | DMCAddress=0; |
| 1076 | DMCSize=0; |
| 1077 | DMCShift=0; |
| 1078 | |
| 1079 | // MAJOR BUG WAS HERE: DMCacc and DMCBitCount never got reset... |
| 1080 | // so, do some ridiculous hackery if a movie's about to play to keep it in sync... |
| 1081 | |
| 1082 | #if 0 |
| 1083 | extern int movieSyncHackOn,resetDMCacc,movieConvertOffset1,movieConvertOffset2; |
| 1084 | if(movieSyncHackOn) |
| 1085 | { |
| 1086 | if(resetDMCacc) |
| 1087 | { |
| 1088 | // no value in movie save state |
| 1089 | #ifdef WIN32 |
| 1090 | // use editbox fields |
| 1091 | DMCacc=movieConvertOffset1; |
| 1092 | DMCBitCount=movieConvertOffset2; |
| 1093 | #else |
| 1094 | // no editbox fields, so leave the values alone |
| 1095 | // and print out a warning that says what they are |
| 1096 | FCEU_PrintError("Warning: These variables were not found in the save state and will keep their current value: DMCacc=%d, DMCBitCount=%d\n", DMCacc, DMCBitCount); |
| 1097 | #endif |
| 1098 | } |
| 1099 | else |
| 1100 | { |
| 1101 | // keep values loaded from movie save state or reset earlier |
| 1102 | } |
| 1103 | } |
| 1104 | else |
| 1105 | #endif |
| 1106 | { |
| 1107 | // reset these variables like should have done in the first place |
| 1108 | DMCacc=1; |
| 1109 | DMCBitCount=0; |
| 1110 | } |
| 1111 | |
| 1112 | // FCEU_PrintError("DMCacc=%d, DMCBitCount=%d",DMCacc,DMCBitCount); |
| 1113 | } |
| 1114 | |
| 1115 | void FCEUSND_Power(void) |
| 1116 | { |
| 1117 | int x; |
| 1118 | |
| 1119 | SetNESSoundMap098(); |
| 1120 | memset(PSG,0x00,sizeof(PSG)); |
| 1121 | FCEUSND_Reset(); |
| 1122 | |
| 1123 | memset(Wave,0,sizeof(Wave)); |
| 1124 | memset(WaveHi,0,sizeof(WaveHi)); |
| 1125 | memset(&EnvUnits,0,sizeof(EnvUnits)); |
| 1126 | |
| 1127 | for(x=0;x<5;x++) |
| 1128 | ChannelBC[x]=0; |
| 1129 | soundtsoffs=0; |
| 1130 | LoadDMCPeriod(DMCFormat&0xF); |
| 1131 | } |
| 1132 | |
| 1133 | |
| 1134 | void SetSoundVariables098(void) |
| 1135 | { |
| 1136 | int x; |
| 1137 | |
| 1138 | fhinc=PAL?16626:14915; // *2 CPU clock rate |
| 1139 | fhinc*=24; |
| 1140 | |
| 1141 | if(FSettings.SndRate) |
| 1142 | { |
| 1143 | wlookup1[0]=0; |
| 1144 | for(x=1;x<32;x++) |
| 1145 | { |
| 1146 | wlookup1[x]=(double)16*16*16*4*95.52/((double)8128/(double)x+100); |
| 1147 | // if(!FSettings.soundq) wlookup1[x]>>=4; |
| 1148 | } |
| 1149 | wlookup2[0]=0; |
| 1150 | for(x=1;x<203;x++) |
| 1151 | { |
| 1152 | wlookup2[x]=(double)16*16*16*4*163.67/((double)24329/(double)x+100); |
| 1153 | // if(!FSettings.soundq) wlookup2[x]>>=4; |
| 1154 | } |
| 1155 | #if 0 |
| 1156 | if(FSettings.soundq>=1) |
| 1157 | { |
| 1158 | DoNoise=RDoNoise; |
| 1159 | DoTriangle=RDoTriangle; |
| 1160 | DoPCM=RDoPCM; |
| 1161 | DoSQ1=RDoSQ1; |
| 1162 | DoSQ2=RDoSQ2; |
| 1163 | } |
| 1164 | else |
| 1165 | #endif |
| 1166 | { |
| 1167 | DoNoise=DoTriangle=DoPCM=DoSQ1=DoSQ2=Dummyfunc; |
| 1168 | DoSQ1=RDoSQLQ; |
| 1169 | DoSQ2=RDoSQLQ; |
| 1170 | DoTriangle=RDoTriangleNoisePCMLQ; |
| 1171 | DoNoise=RDoTriangleNoisePCMLQ; |
| 1172 | DoPCM=RDoTriangleNoisePCMLQ; |
| 1173 | } |
| 1174 | } |
| 1175 | else |
| 1176 | { |
| 1177 | DoNoise=DoTriangle=DoPCM=DoSQ1=DoSQ2=Dummyfunc; |
| 1178 | return; |
| 1179 | } |
| 1180 | |
| 1181 | MakeFilters(FSettings.SndRate); |
| 1182 | |
| 1183 | if(GameExpSound.RChange) |
| 1184 | GameExpSound.RChange(); |
| 1185 | |
| 1186 | nesincsize=(int32)(((int64)1<<17)*(double)(PAL?PAL_CPU:NTSC_CPU)/(FSettings.SndRate * 16)); |
| 1187 | memset(sqacc,0,sizeof(sqacc)); |
| 1188 | memset(ChannelBC,0,sizeof(ChannelBC)); |
| 1189 | |
| 1190 | LoadDMCPeriod(DMCFormat&0xF); // For changing from PAL to NTSC |
| 1191 | |
| 1192 | soundtsinc=(uint32)((uint64)(PAL?(long double)PAL_CPU*65536:(long double)NTSC_CPU*65536)/(FSettings.SndRate * 16)); |
| 1193 | } |
| 1194 | |
| 1195 | /* |
| 1196 | void FCEUI_SetLowPass(int q) |
| 1197 | { |
| 1198 | FSettings.lowpass=q; |
| 1199 | } |
| 1200 | |
| 1201 | void FCEUI_SetSoundQuality(int quality) |
| 1202 | { |
| 1203 | FSettings.soundq=quality; |
| 1204 | SetSoundVariables098(); |
| 1205 | } |
| 1206 | */ |
| 1207 | |
| 1208 | |
| 1209 | SFORMAT FCEUSND_STATEINFO[]={ |
| 1210 | |
| 1211 | { &fhcnt, 4|FCEUSTATE_RLSB,"FHCN"}, |
| 1212 | { &fcnt, 1, "FCNT"}, |
| 1213 | { PSG, 0x10, "PSG"}, |
| 1214 | { &EnabledChannels, 1, "ENCH"}, |
| 1215 | { &IRQFrameMode, 1, "IQFM"}, |
| 1216 | { &nreg, 2|FCEUSTATE_RLSB, "NREG"}, |
| 1217 | { &TriMode, 1, "TRIM"}, |
| 1218 | { &TriCount, 1, "TRIC"}, |
| 1219 | |
| 1220 | { &EnvUnits[0].Speed, 1, "E0SP"}, |
| 1221 | { &EnvUnits[1].Speed, 1, "E1SP"}, |
| 1222 | { &EnvUnits[2].Speed, 1, "E2SP"}, |
| 1223 | |
| 1224 | { &EnvUnits[0].Mode, 1, "E0MO"}, |
| 1225 | { &EnvUnits[1].Mode, 1, "E1MO"}, |
| 1226 | { &EnvUnits[2].Mode, 1, "E2MO"}, |
| 1227 | |
| 1228 | { &EnvUnits[0].DecCountTo1, 1, "E0D1"}, |
| 1229 | { &EnvUnits[1].DecCountTo1, 1, "E1D1"}, |
| 1230 | { &EnvUnits[2].DecCountTo1, 1, "E2D1"}, |
| 1231 | |
| 1232 | { &EnvUnits[0].decvolume, 1, "E0DV"}, |
| 1233 | { &EnvUnits[1].decvolume, 1, "E1DV"}, |
| 1234 | { &EnvUnits[2].decvolume, 1, "E2DV"}, |
| 1235 | |
| 1236 | { &lengthcount[0], 4|FCEUSTATE_RLSB, "LEN0"}, |
| 1237 | { &lengthcount[1], 4|FCEUSTATE_RLSB, "LEN1"}, |
| 1238 | { &lengthcount[2], 4|FCEUSTATE_RLSB, "LEN2"}, |
| 1239 | { &lengthcount[3], 4|FCEUSTATE_RLSB, "LEN3"}, |
| 1240 | { sweepon, 2, "SWEE"}, |
| 1241 | { &curfreq[0], 4|FCEUSTATE_RLSB,"CRF1"}, |
| 1242 | { &curfreq[1], 4|FCEUSTATE_RLSB,"CRF2"}, |
| 1243 | { SweepCount, 2,"SWCT"}, |
| 1244 | |
| 1245 | { &SIRQStat, 1, "SIRQ"}, |
| 1246 | |
| 1247 | { &DMCacc, 4|FCEUSTATE_RLSB, "5ACC"}, |
| 1248 | { &DMCBitCount, 1, "5BIT"}, |
| 1249 | { &DMCAddress, 4|FCEUSTATE_RLSB, "5ADD"}, |
| 1250 | { &DMCSize, 4|FCEUSTATE_RLSB, "5SIZ"}, |
| 1251 | { &DMCShift, 1, "5SHF"}, |
| 1252 | |
| 1253 | { &DMCHaveDMA, 1, "5HVDM"}, |
| 1254 | { &DMCHaveSample, 1, "5HVSP"}, |
| 1255 | |
| 1256 | { &DMCSizeLatch, 1, "5SZL"}, |
| 1257 | { &DMCAddressLatch, 1, "5ADL"}, |
| 1258 | { &DMCFormat, 1, "5FMT"}, |
| 1259 | { &RawDALatch, 1, "RWDA"}, |
| 1260 | { 0 } |
| 1261 | }; |
| 1262 | |
| 1263 | void FCEUSND_SaveState(void) |
| 1264 | { |
| 1265 | |
| 1266 | } |
| 1267 | |
| 1268 | void FCEUSND_LoadState(int version) |
| 1269 | { |
| 1270 | LoadDMCPeriod(DMCFormat&0xF); |
| 1271 | RawDALatch&=0x7F; |
| 1272 | DMCAddress&=0x7FFF; |
| 1273 | } |