| 1 | /***************************************************************************\r |
| 2 | registers.c - description\r |
| 3 | -------------------\r |
| 4 | begin : Wed May 15 2002\r |
| 5 | copyright : (C) 2002 by Pete Bernert\r |
| 6 | email : BlackDove@addcom.de\r |
| 7 | ***************************************************************************/\r |
| 8 | /***************************************************************************\r |
| 9 | * *\r |
| 10 | * This program is free software; you can redistribute it and/or modify *\r |
| 11 | * it under the terms of the GNU General Public License as published by *\r |
| 12 | * the Free Software Foundation; either version 2 of the License, or *\r |
| 13 | * (at your option) any later version. See also the license.txt file for *\r |
| 14 | * additional informations. *\r |
| 15 | * *\r |
| 16 | ***************************************************************************/\r |
| 17 | \r |
| 18 | #include "stdafx.h"\r |
| 19 | \r |
| 20 | #define _IN_REGISTERS\r |
| 21 | \r |
| 22 | #include "externals.h"\r |
| 23 | #include "registers.h"\r |
| 24 | \r |
| 25 | static void SoundOn(int start,int end,unsigned short val);\r |
| 26 | static void SoundOff(int start,int end,unsigned short val);\r |
| 27 | static void FModOn(int start,int end,unsigned short val);\r |
| 28 | static void NoiseOn(int start,int end,unsigned short val);\r |
| 29 | static void SetVolumeL(unsigned char ch,short vol);\r |
| 30 | static void SetVolumeR(unsigned char ch,short vol);\r |
| 31 | static void SetPitch(int ch,unsigned short val);\r |
| 32 | static void ReverbOn(int start,int end,unsigned short val);\r |
| 33 | \r |
| 34 | ////////////////////////////////////////////////////////////////////////\r |
| 35 | // WRITE REGISTERS: called by main emu\r |
| 36 | ////////////////////////////////////////////////////////////////////////\r |
| 37 | \r |
| 38 | void CALLBACK SPUwriteRegister(unsigned long reg, unsigned short val)\r |
| 39 | {\r |
| 40 | const unsigned long r=reg&0xfff;\r |
| 41 | regArea[(r-0xc00)>>1] = val;\r |
| 42 | \r |
| 43 | if(r>=0x0c00 && r<0x0d80) // some channel info?\r |
| 44 | {\r |
| 45 | int ch=(r>>4)-0xc0; // calc channel\r |
| 46 | switch(r&0x0f)\r |
| 47 | {\r |
| 48 | //------------------------------------------------// r volume\r |
| 49 | case 0: \r |
| 50 | SetVolumeL((unsigned char)ch,val);\r |
| 51 | break;\r |
| 52 | //------------------------------------------------// l volume\r |
| 53 | case 2: \r |
| 54 | SetVolumeR((unsigned char)ch,val);\r |
| 55 | break;\r |
| 56 | //------------------------------------------------// pitch\r |
| 57 | case 4: \r |
| 58 | SetPitch(ch,val);\r |
| 59 | break;\r |
| 60 | //------------------------------------------------// start\r |
| 61 | case 6: \r |
| 62 | // taken from regArea later\r |
| 63 | break;\r |
| 64 | //------------------------------------------------// level with pre-calcs\r |
| 65 | case 8:\r |
| 66 | {\r |
| 67 | const unsigned long lval=val;\r |
| 68 | //---------------------------------------------//\r |
| 69 | s_chan[ch].ADSRX.AttackModeExp=(lval&0x8000)?1:0; \r |
| 70 | s_chan[ch].ADSRX.AttackRate=(lval>>8) & 0x007f;\r |
| 71 | s_chan[ch].ADSRX.DecayRate=(lval>>4) & 0x000f;\r |
| 72 | s_chan[ch].ADSRX.SustainLevel=lval & 0x000f;\r |
| 73 | //---------------------------------------------//\r |
| 74 | }\r |
| 75 | break;\r |
| 76 | //------------------------------------------------// adsr times with pre-calcs\r |
| 77 | case 10:\r |
| 78 | {\r |
| 79 | const unsigned long lval=val;\r |
| 80 | \r |
| 81 | //----------------------------------------------//\r |
| 82 | s_chan[ch].ADSRX.SustainModeExp = (lval&0x8000)?1:0;\r |
| 83 | s_chan[ch].ADSRX.SustainIncrease= (lval&0x4000)?0:1;\r |
| 84 | s_chan[ch].ADSRX.SustainRate = (lval>>6) & 0x007f;\r |
| 85 | s_chan[ch].ADSRX.ReleaseModeExp = (lval&0x0020)?1:0;\r |
| 86 | s_chan[ch].ADSRX.ReleaseRate = lval & 0x001f;\r |
| 87 | //----------------------------------------------//\r |
| 88 | }\r |
| 89 | break;\r |
| 90 | //------------------------------------------------// adsr volume... mmm have to investigate this\r |
| 91 | case 12:\r |
| 92 | break;\r |
| 93 | //------------------------------------------------//\r |
| 94 | case 14: // loop?\r |
| 95 | s_chan[ch].pLoop=spuMemC+((val&~1)<<3);\r |
| 96 | break;\r |
| 97 | //------------------------------------------------//\r |
| 98 | }\r |
| 99 | return;\r |
| 100 | }\r |
| 101 | \r |
| 102 | switch(r)\r |
| 103 | {\r |
| 104 | //-------------------------------------------------//\r |
| 105 | case H_SPUaddr:\r |
| 106 | spuAddr = (unsigned long) val<<3;\r |
| 107 | break;\r |
| 108 | //-------------------------------------------------//\r |
| 109 | case H_SPUdata:\r |
| 110 | spuMem[spuAddr>>1] = val;\r |
| 111 | spuAddr+=2;\r |
| 112 | if(spuAddr>0x7ffff) spuAddr=0;\r |
| 113 | break;\r |
| 114 | //-------------------------------------------------//\r |
| 115 | case H_SPUctrl:\r |
| 116 | if(!(spuCtrl & CTRL_IRQ))\r |
| 117 | spuStat&=~STAT_IRQ;\r |
| 118 | spuCtrl=val;\r |
| 119 | break;\r |
| 120 | //-------------------------------------------------//\r |
| 121 | case H_SPUstat:\r |
| 122 | spuStat=val & 0xf800;\r |
| 123 | break;\r |
| 124 | //-------------------------------------------------//\r |
| 125 | case H_SPUReverbAddr:\r |
| 126 | if(val==0xFFFF || val<=0x200)\r |
| 127 | {rvb.StartAddr=rvb.CurrAddr=0;}\r |
| 128 | else\r |
| 129 | {\r |
| 130 | const long iv=(unsigned long)val<<2;\r |
| 131 | if(rvb.StartAddr!=iv)\r |
| 132 | {\r |
| 133 | rvb.StartAddr=(unsigned long)val<<2;\r |
| 134 | rvb.CurrAddr=rvb.StartAddr;\r |
| 135 | // sync-with-decode-buffers hack..\r |
| 136 | if(rvb.StartAddr==0x3ff00)\r |
| 137 | rvb.CurrAddr+=decode_pos/2;\r |
| 138 | }\r |
| 139 | }\r |
| 140 | rvb.dirty = 1;\r |
| 141 | break;\r |
| 142 | //-------------------------------------------------//\r |
| 143 | case H_SPUirqAddr:\r |
| 144 | spuIrq = val;\r |
| 145 | pSpuIrq=spuMemC+(((unsigned long) val<<3)&~0xf);\r |
| 146 | break;\r |
| 147 | //-------------------------------------------------//\r |
| 148 | case H_SPUrvolL:\r |
| 149 | rvb.VolLeft=val;\r |
| 150 | break;\r |
| 151 | //-------------------------------------------------//\r |
| 152 | case H_SPUrvolR:\r |
| 153 | rvb.VolRight=val;\r |
| 154 | break;\r |
| 155 | //-------------------------------------------------//\r |
| 156 | \r |
| 157 | /*\r |
| 158 | case H_ExtLeft:\r |
| 159 | //auxprintf("EL %d\n",val);\r |
| 160 | break;\r |
| 161 | //-------------------------------------------------//\r |
| 162 | case H_ExtRight:\r |
| 163 | //auxprintf("ER %d\n",val);\r |
| 164 | break;\r |
| 165 | //-------------------------------------------------//\r |
| 166 | case H_SPUmvolL:\r |
| 167 | //auxprintf("ML %d\n",val);\r |
| 168 | break;\r |
| 169 | //-------------------------------------------------//\r |
| 170 | case H_SPUmvolR:\r |
| 171 | //auxprintf("MR %d\n",val);\r |
| 172 | break;\r |
| 173 | //-------------------------------------------------//\r |
| 174 | case H_SPUMute1:\r |
| 175 | //auxprintf("M0 %04x\n",val);\r |
| 176 | break;\r |
| 177 | //-------------------------------------------------//\r |
| 178 | case H_SPUMute2:\r |
| 179 | //auxprintf("M1 %04x\n",val);\r |
| 180 | break;\r |
| 181 | */\r |
| 182 | //-------------------------------------------------//\r |
| 183 | case H_SPUon1:\r |
| 184 | SoundOn(0,16,val);\r |
| 185 | break;\r |
| 186 | //-------------------------------------------------//\r |
| 187 | case H_SPUon2:\r |
| 188 | SoundOn(16,24,val);\r |
| 189 | break;\r |
| 190 | //-------------------------------------------------//\r |
| 191 | case H_SPUoff1:\r |
| 192 | SoundOff(0,16,val);\r |
| 193 | break;\r |
| 194 | //-------------------------------------------------//\r |
| 195 | case H_SPUoff2:\r |
| 196 | SoundOff(16,24,val);\r |
| 197 | break;\r |
| 198 | //-------------------------------------------------//\r |
| 199 | case H_CDLeft:\r |
| 200 | iLeftXAVol=val & 0x7fff;\r |
| 201 | if(cddavCallback) cddavCallback(0,val);\r |
| 202 | break;\r |
| 203 | case H_CDRight:\r |
| 204 | iRightXAVol=val & 0x7fff;\r |
| 205 | if(cddavCallback) cddavCallback(1,val);\r |
| 206 | break;\r |
| 207 | //-------------------------------------------------//\r |
| 208 | case H_FMod1:\r |
| 209 | FModOn(0,16,val);\r |
| 210 | break;\r |
| 211 | //-------------------------------------------------//\r |
| 212 | case H_FMod2:\r |
| 213 | FModOn(16,24,val);\r |
| 214 | break;\r |
| 215 | //-------------------------------------------------//\r |
| 216 | case H_Noise1:\r |
| 217 | NoiseOn(0,16,val);\r |
| 218 | break;\r |
| 219 | //-------------------------------------------------//\r |
| 220 | case H_Noise2:\r |
| 221 | NoiseOn(16,24,val);\r |
| 222 | break;\r |
| 223 | //-------------------------------------------------//\r |
| 224 | case H_RVBon1:\r |
| 225 | ReverbOn(0,16,val);\r |
| 226 | break;\r |
| 227 | //-------------------------------------------------//\r |
| 228 | case H_RVBon2:\r |
| 229 | ReverbOn(16,24,val);\r |
| 230 | break;\r |
| 231 | //-------------------------------------------------//\r |
| 232 | case H_Reverb+0 : rvb.FB_SRC_A=val*4; break;\r |
| 233 | case H_Reverb+2 : rvb.FB_SRC_B=val*4; break;\r |
| 234 | case H_Reverb+4 : rvb.IIR_ALPHA=(short)val; break;\r |
| 235 | case H_Reverb+6 : rvb.ACC_COEF_A=(short)val; break;\r |
| 236 | case H_Reverb+8 : rvb.ACC_COEF_B=(short)val; break;\r |
| 237 | case H_Reverb+10 : rvb.ACC_COEF_C=(short)val; break;\r |
| 238 | case H_Reverb+12 : rvb.ACC_COEF_D=(short)val; break;\r |
| 239 | case H_Reverb+14 : rvb.IIR_COEF=(short)val; break;\r |
| 240 | case H_Reverb+16 : rvb.FB_ALPHA=(short)val; break;\r |
| 241 | case H_Reverb+18 : rvb.FB_X=(short)val; break;\r |
| 242 | case H_Reverb+20 : rvb.IIR_DEST_A0=val*4; break;\r |
| 243 | case H_Reverb+22 : rvb.IIR_DEST_A1=val*4; break;\r |
| 244 | case H_Reverb+24 : rvb.ACC_SRC_A0=val*4; break;\r |
| 245 | case H_Reverb+26 : rvb.ACC_SRC_A1=val*4; break;\r |
| 246 | case H_Reverb+28 : rvb.ACC_SRC_B0=val*4; break;\r |
| 247 | case H_Reverb+30 : rvb.ACC_SRC_B1=val*4; break;\r |
| 248 | case H_Reverb+32 : rvb.IIR_SRC_A0=val*4; break;\r |
| 249 | case H_Reverb+34 : rvb.IIR_SRC_A1=val*4; break;\r |
| 250 | case H_Reverb+36 : rvb.IIR_DEST_B0=val*4; break;\r |
| 251 | case H_Reverb+38 : rvb.IIR_DEST_B1=val*4; break;\r |
| 252 | case H_Reverb+40 : rvb.ACC_SRC_C0=val*4; break;\r |
| 253 | case H_Reverb+42 : rvb.ACC_SRC_C1=val*4; break;\r |
| 254 | case H_Reverb+44 : rvb.ACC_SRC_D0=val*4; break;\r |
| 255 | case H_Reverb+46 : rvb.ACC_SRC_D1=val*4; break;\r |
| 256 | case H_Reverb+48 : rvb.IIR_SRC_B1=val*4; break;\r |
| 257 | case H_Reverb+50 : rvb.IIR_SRC_B0=val*4; break;\r |
| 258 | case H_Reverb+52 : rvb.MIX_DEST_A0=val*4; break;\r |
| 259 | case H_Reverb+54 : rvb.MIX_DEST_A1=val*4; break;\r |
| 260 | case H_Reverb+56 : rvb.MIX_DEST_B0=val*4; break;\r |
| 261 | case H_Reverb+58 : rvb.MIX_DEST_B1=val*4; break;\r |
| 262 | case H_Reverb+60 : rvb.IN_COEF_L=(short)val; break;\r |
| 263 | case H_Reverb+62 : rvb.IN_COEF_R=(short)val; break;\r |
| 264 | }\r |
| 265 | \r |
| 266 | if ((r & ~0x3f) == H_Reverb)\r |
| 267 | rvb.dirty = 1; // recalculate on next update\r |
| 268 | }\r |
| 269 | \r |
| 270 | ////////////////////////////////////////////////////////////////////////\r |
| 271 | // READ REGISTER: called by main emu\r |
| 272 | ////////////////////////////////////////////////////////////////////////\r |
| 273 | \r |
| 274 | unsigned short CALLBACK SPUreadRegister(unsigned long reg)\r |
| 275 | {\r |
| 276 | const unsigned long r=reg&0xfff;\r |
| 277 | \r |
| 278 | if(r>=0x0c00 && r<0x0d80)\r |
| 279 | {\r |
| 280 | switch(r&0x0f)\r |
| 281 | {\r |
| 282 | case 12: // get adsr vol\r |
| 283 | {\r |
| 284 | const int ch=(r>>4)-0xc0;\r |
| 285 | if(dwNewChannel&(1<<ch)) return 1; // we are started, but not processed? return 1\r |
| 286 | if((dwChannelOn&(1<<ch)) && // same here... we haven't decoded one sample yet, so no envelope yet. return 1 as well\r |
| 287 | !s_chan[ch].ADSRX.EnvelopeVol)\r |
| 288 | return 1;\r |
| 289 | return (unsigned short)(s_chan[ch].ADSRX.EnvelopeVol>>16);\r |
| 290 | }\r |
| 291 | \r |
| 292 | case 14: // get loop address\r |
| 293 | {\r |
| 294 | const int ch=(r>>4)-0xc0;\r |
| 295 | return (unsigned short)((s_chan[ch].pLoop-spuMemC)>>3);\r |
| 296 | }\r |
| 297 | }\r |
| 298 | }\r |
| 299 | \r |
| 300 | switch(r)\r |
| 301 | {\r |
| 302 | case H_SPUctrl:\r |
| 303 | return spuCtrl;\r |
| 304 | \r |
| 305 | case H_SPUstat:\r |
| 306 | return spuStat;\r |
| 307 | \r |
| 308 | case H_SPUaddr:\r |
| 309 | return (unsigned short)(spuAddr>>3);\r |
| 310 | \r |
| 311 | case H_SPUdata:\r |
| 312 | {\r |
| 313 | unsigned short s=spuMem[spuAddr>>1];\r |
| 314 | spuAddr+=2;\r |
| 315 | if(spuAddr>0x7ffff) spuAddr=0;\r |
| 316 | return s;\r |
| 317 | }\r |
| 318 | \r |
| 319 | case H_SPUirqAddr:\r |
| 320 | return spuIrq;\r |
| 321 | \r |
| 322 | //case H_SPUIsOn1:\r |
| 323 | // return IsSoundOn(0,16);\r |
| 324 | \r |
| 325 | //case H_SPUIsOn2:\r |
| 326 | // return IsSoundOn(16,24);\r |
| 327 | \r |
| 328 | }\r |
| 329 | \r |
| 330 | return regArea[(r-0xc00)>>1];\r |
| 331 | }\r |
| 332 | \r |
| 333 | ////////////////////////////////////////////////////////////////////////\r |
| 334 | // SOUND ON register write\r |
| 335 | ////////////////////////////////////////////////////////////////////////\r |
| 336 | \r |
| 337 | static void SoundOn(int start,int end,unsigned short val)\r |
| 338 | {\r |
| 339 | int ch;\r |
| 340 | \r |
| 341 | for(ch=start;ch<end;ch++,val>>=1) // loop channels\r |
| 342 | {\r |
| 343 | if((val&1) && regAreaGet(ch,6)) // mmm... start has to be set before key on !?!\r |
| 344 | {\r |
| 345 | // do this here, not in StartSound\r |
| 346 | // - fixes fussy timing issues\r |
| 347 | s_chan[ch].bStop=0;\r |
| 348 | s_chan[ch].pCurr=spuMemC+((regAreaGet(ch,6)&~1)<<3); // must be block aligned\r |
| 349 | s_chan[ch].pLoop=spuMemC+((regAreaGet(ch,14)&~1)<<3);\r |
| 350 | s_chan[ch].prevflags=2;\r |
| 351 | \r |
| 352 | dwNewChannel|=(1<<ch); // bitfield for faster testing\r |
| 353 | dwChannelOn|=1<<ch;\r |
| 354 | dwChannelDead&=~(1<<ch);\r |
| 355 | }\r |
| 356 | }\r |
| 357 | }\r |
| 358 | \r |
| 359 | ////////////////////////////////////////////////////////////////////////\r |
| 360 | // SOUND OFF register write\r |
| 361 | ////////////////////////////////////////////////////////////////////////\r |
| 362 | \r |
| 363 | static void SoundOff(int start,int end,unsigned short val)\r |
| 364 | {\r |
| 365 | int ch;\r |
| 366 | for(ch=start;ch<end;ch++,val>>=1) // loop channels\r |
| 367 | {\r |
| 368 | if(val&1) // && s_chan[i].bOn) mmm...\r |
| 369 | {\r |
| 370 | s_chan[ch].bStop=1;\r |
| 371 | \r |
| 372 | // Jungle Book - Rhythm 'n Groove\r |
| 373 | // - turns off buzzing sound (loop hangs)\r |
| 374 | dwNewChannel &= ~(1<<ch);\r |
| 375 | } \r |
| 376 | }\r |
| 377 | }\r |
| 378 | \r |
| 379 | ////////////////////////////////////////////////////////////////////////\r |
| 380 | // FMOD register write\r |
| 381 | ////////////////////////////////////////////////////////////////////////\r |
| 382 | \r |
| 383 | static void FModOn(int start,int end,unsigned short val)\r |
| 384 | {\r |
| 385 | int ch;\r |
| 386 | \r |
| 387 | for(ch=start;ch<end;ch++,val>>=1) // loop channels\r |
| 388 | {\r |
| 389 | if(val&1) // -> fmod on/off\r |
| 390 | {\r |
| 391 | if(ch>0) \r |
| 392 | {\r |
| 393 | s_chan[ch].bFMod=1; // --> sound channel\r |
| 394 | s_chan[ch-1].bFMod=2; // --> freq channel\r |
| 395 | }\r |
| 396 | }\r |
| 397 | else\r |
| 398 | {\r |
| 399 | s_chan[ch].bFMod=0; // --> turn off fmod\r |
| 400 | if(ch>0&&s_chan[ch-1].bFMod==2)\r |
| 401 | s_chan[ch-1].bFMod=0;\r |
| 402 | }\r |
| 403 | }\r |
| 404 | }\r |
| 405 | \r |
| 406 | ////////////////////////////////////////////////////////////////////////\r |
| 407 | // NOISE register write\r |
| 408 | ////////////////////////////////////////////////////////////////////////\r |
| 409 | \r |
| 410 | static void NoiseOn(int start,int end,unsigned short val)\r |
| 411 | {\r |
| 412 | int ch;\r |
| 413 | \r |
| 414 | for(ch=start;ch<end;ch++,val>>=1) // loop channels\r |
| 415 | {\r |
| 416 | s_chan[ch].bNoise=val&1; // -> noise on/off\r |
| 417 | }\r |
| 418 | }\r |
| 419 | \r |
| 420 | ////////////////////////////////////////////////////////////////////////\r |
| 421 | // LEFT VOLUME register write\r |
| 422 | ////////////////////////////////////////////////////////////////////////\r |
| 423 | \r |
| 424 | // please note: sweep and phase invert are wrong... but I've never seen\r |
| 425 | // them used\r |
| 426 | \r |
| 427 | static void SetVolumeL(unsigned char ch,short vol) // LEFT VOLUME\r |
| 428 | {\r |
| 429 | if(vol&0x8000) // sweep?\r |
| 430 | {\r |
| 431 | short sInc=1; // -> sweep up?\r |
| 432 | if(vol&0x2000) sInc=-1; // -> or down?\r |
| 433 | if(vol&0x1000) vol^=0xffff; // -> mmm... phase inverted? have to investigate this\r |
| 434 | vol=((vol&0x7f)+1)/2; // -> sweep: 0..127 -> 0..64\r |
| 435 | vol+=vol/(2*sInc); // -> HACK: we don't sweep right now, so we just raise/lower the volume by the half!\r |
| 436 | vol*=128;\r |
| 437 | }\r |
| 438 | else // no sweep:\r |
| 439 | {\r |
| 440 | if(vol&0x4000) // -> mmm... phase inverted? have to investigate this\r |
| 441 | //vol^=0xffff;\r |
| 442 | vol=0x3fff-(vol&0x3fff);\r |
| 443 | }\r |
| 444 | \r |
| 445 | vol&=0x3fff;\r |
| 446 | s_chan[ch].iLeftVolume=vol; // store volume\r |
| 447 | }\r |
| 448 | \r |
| 449 | ////////////////////////////////////////////////////////////////////////\r |
| 450 | // RIGHT VOLUME register write\r |
| 451 | ////////////////////////////////////////////////////////////////////////\r |
| 452 | \r |
| 453 | static void SetVolumeR(unsigned char ch,short vol) // RIGHT VOLUME\r |
| 454 | {\r |
| 455 | if(vol&0x8000) // comments... see above :)\r |
| 456 | {\r |
| 457 | short sInc=1;\r |
| 458 | if(vol&0x2000) sInc=-1;\r |
| 459 | if(vol&0x1000) vol^=0xffff;\r |
| 460 | vol=((vol&0x7f)+1)/2; \r |
| 461 | vol+=vol/(2*sInc);\r |
| 462 | vol*=128;\r |
| 463 | }\r |
| 464 | else \r |
| 465 | {\r |
| 466 | if(vol&0x4000) //vol=vol^=0xffff;\r |
| 467 | vol=0x3fff-(vol&0x3fff);\r |
| 468 | }\r |
| 469 | \r |
| 470 | vol&=0x3fff;\r |
| 471 | \r |
| 472 | s_chan[ch].iRightVolume=vol;\r |
| 473 | }\r |
| 474 | \r |
| 475 | ////////////////////////////////////////////////////////////////////////\r |
| 476 | // PITCH register write\r |
| 477 | ////////////////////////////////////////////////////////////////////////\r |
| 478 | \r |
| 479 | static void SetPitch(int ch,unsigned short val) // SET PITCH\r |
| 480 | {\r |
| 481 | int NP;\r |
| 482 | if(val>0x3fff) NP=0x3fff; // get pitch val\r |
| 483 | else NP=val;\r |
| 484 | \r |
| 485 | s_chan[ch].iRawPitch=NP;\r |
| 486 | s_chan[ch].sinc=(NP<<4)|8;\r |
| 487 | if(iUseInterpolation==1) s_chan[ch].SB[32]=1; // -> freq change in simple interpolation mode: set flag\r |
| 488 | }\r |
| 489 | \r |
| 490 | ////////////////////////////////////////////////////////////////////////\r |
| 491 | // REVERB register write\r |
| 492 | ////////////////////////////////////////////////////////////////////////\r |
| 493 | \r |
| 494 | static void ReverbOn(int start,int end,unsigned short val)\r |
| 495 | {\r |
| 496 | int ch;\r |
| 497 | \r |
| 498 | for(ch=start;ch<end;ch++,val>>=1) // loop channels\r |
| 499 | {\r |
| 500 | s_chan[ch].bReverb=val&1; // -> reverb on/off\r |
| 501 | }\r |
| 502 | }\r |