| 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 | #include "spu_config.h"\r |
| 25 | #include "spu.h"\r |
| 26 | \r |
| 27 | static void SoundOn(int start,int end,unsigned short val);\r |
| 28 | static void SoundOff(int start,int end,unsigned short val);\r |
| 29 | static void FModOn(int start,int end,unsigned short val);\r |
| 30 | static void NoiseOn(int start,int end,unsigned short val);\r |
| 31 | static void SetVolumeL(unsigned char ch,short vol);\r |
| 32 | static void SetVolumeR(unsigned char ch,short vol);\r |
| 33 | static void SetPitch(int ch,unsigned short val);\r |
| 34 | static void ReverbOn(int start,int end,unsigned short val);\r |
| 35 | \r |
| 36 | ////////////////////////////////////////////////////////////////////////\r |
| 37 | // WRITE REGISTERS: called by main emu\r |
| 38 | ////////////////////////////////////////////////////////////////////////\r |
| 39 | \r |
| 40 | static const uint32_t ignore_dupe[16] = {\r |
| 41 | // ch 0-15 c40 c80 cc0\r |
| 42 | 0x7f7f7f7f, 0x7f7f7f7f, 0x7f7f7f7f, 0x7f7f7f7f,\r |
| 43 | // ch 16-24 d40 control reverb\r |
| 44 | 0x7f7f7f7f, 0x7f7f7f7f, 0xff05ff0f, 0xffffffff,\r |
| 45 | 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,\r |
| 46 | 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff\r |
| 47 | };\r |
| 48 | \r |
| 49 | void CALLBACK SPUwriteRegister(unsigned long reg, unsigned short val,\r |
| 50 | unsigned int cycles)\r |
| 51 | {\r |
| 52 | int r = reg & 0xffe;\r |
| 53 | int rofs = (r - 0xc00) >> 1;\r |
| 54 | int changed = spu.regArea[rofs] != val;\r |
| 55 | spu.regArea[rofs] = val;\r |
| 56 | \r |
| 57 | if (!changed && (ignore_dupe[rofs >> 5] & (1u << (rofs & 0x1f))))\r |
| 58 | return;\r |
| 59 | // zero keyon/keyoff?\r |
| 60 | if (val == 0 && (r & 0xff8) == 0xd88)\r |
| 61 | return;\r |
| 62 | \r |
| 63 | do_samples_if_needed(cycles, 0, 16);\r |
| 64 | \r |
| 65 | if(r>=0x0c00 && r<0x0d80) // some channel info?\r |
| 66 | {\r |
| 67 | int ch=(r>>4)-0xc0; // calc channel\r |
| 68 | switch(r&0x0f)\r |
| 69 | {\r |
| 70 | //------------------------------------------------// r volume\r |
| 71 | case 0: \r |
| 72 | SetVolumeL((unsigned char)ch,val);\r |
| 73 | break;\r |
| 74 | //------------------------------------------------// l volume\r |
| 75 | case 2: \r |
| 76 | SetVolumeR((unsigned char)ch,val);\r |
| 77 | break;\r |
| 78 | //------------------------------------------------// pitch\r |
| 79 | case 4: \r |
| 80 | SetPitch(ch,val);\r |
| 81 | goto upd_irq;\r |
| 82 | //------------------------------------------------// start\r |
| 83 | case 6: \r |
| 84 | // taken from regArea later\r |
| 85 | break;\r |
| 86 | //------------------------------------------------// level with pre-calcs\r |
| 87 | case 8:\r |
| 88 | {\r |
| 89 | const unsigned long lval=val;\r |
| 90 | //---------------------------------------------//\r |
| 91 | spu.s_chan[ch].ADSRX.AttackModeExp=(lval&0x8000)?1:0;\r |
| 92 | spu.s_chan[ch].ADSRX.AttackRate=(lval>>8) & 0x007f;\r |
| 93 | spu.s_chan[ch].ADSRX.DecayRate=(lval>>4) & 0x000f;\r |
| 94 | spu.s_chan[ch].ADSRX.SustainLevel=lval & 0x000f;\r |
| 95 | //---------------------------------------------//\r |
| 96 | }\r |
| 97 | break;\r |
| 98 | //------------------------------------------------// adsr times with pre-calcs\r |
| 99 | case 10:\r |
| 100 | {\r |
| 101 | const unsigned long lval=val;\r |
| 102 | \r |
| 103 | //----------------------------------------------//\r |
| 104 | spu.s_chan[ch].ADSRX.SustainModeExp = (lval&0x8000)?1:0;\r |
| 105 | spu.s_chan[ch].ADSRX.SustainIncrease= (lval&0x4000)?0:1;\r |
| 106 | spu.s_chan[ch].ADSRX.SustainRate = (lval>>6) & 0x007f;\r |
| 107 | spu.s_chan[ch].ADSRX.ReleaseModeExp = (lval&0x0020)?1:0;\r |
| 108 | spu.s_chan[ch].ADSRX.ReleaseRate = lval & 0x001f;\r |
| 109 | //----------------------------------------------//\r |
| 110 | }\r |
| 111 | break;\r |
| 112 | //------------------------------------------------// adsr volume... mmm have to investigate this\r |
| 113 | case 12:\r |
| 114 | break;\r |
| 115 | //------------------------------------------------//\r |
| 116 | case 14: // loop?\r |
| 117 | spu.s_chan[ch].pLoop=spu.spuMemC+((val&~1)<<3);\r |
| 118 | spu.s_chan[ch].bIgnoreLoop = 1;\r |
| 119 | goto upd_irq;\r |
| 120 | //------------------------------------------------//\r |
| 121 | }\r |
| 122 | return;\r |
| 123 | }\r |
| 124 | else if (0x0e00 <= r && r < 0x0e60)\r |
| 125 | {\r |
| 126 | int ch = (r >> 2) & 0x1f;\r |
| 127 | log_unhandled("c%02d w %cvol %04x\n", ch, (r & 2) ? 'r' : 'l', val);\r |
| 128 | spu.s_chan[ch].iVolume[(r >> 1) & 1] = (signed short)val >> 1;\r |
| 129 | }\r |
| 130 | \r |
| 131 | switch(r)\r |
| 132 | {\r |
| 133 | //-------------------------------------------------//\r |
| 134 | case H_SPUaddr:\r |
| 135 | spu.spuAddr = (unsigned int)val << 3;\r |
| 136 | //check_irq_io(spu.spuAddr);\r |
| 137 | break;\r |
| 138 | //-------------------------------------------------//\r |
| 139 | case H_SPUdata:\r |
| 140 | *(unsigned short *)(spu.spuMemC + spu.spuAddr) = HTOLE16(val);\r |
| 141 | spu.spuAddr += 2;\r |
| 142 | spu.spuAddr &= 0x7fffe;\r |
| 143 | check_irq_io(spu.spuAddr);\r |
| 144 | break;\r |
| 145 | //-------------------------------------------------//\r |
| 146 | case H_SPUctrl:\r |
| 147 | spu.spuStat = (spu.spuStat & ~0xbf) | (val & 0x3f) | ((val << 2) & 0x80);\r |
| 148 | spu.spuStat &= ~STAT_IRQ | val;\r |
| 149 | if (!(spu.spuCtrl & CTRL_IRQ)) {\r |
| 150 | if (val & CTRL_IRQ)\r |
| 151 | schedule_next_irq();\r |
| 152 | }\r |
| 153 | spu.spuCtrl=val;\r |
| 154 | break;\r |
| 155 | //-------------------------------------------------//\r |
| 156 | case H_SPUstat:\r |
| 157 | //spu.spuStat=val&0xf800;\r |
| 158 | break;\r |
| 159 | //-------------------------------------------------//\r |
| 160 | case H_SPUReverbAddr:\r |
| 161 | goto rvbd;\r |
| 162 | //-------------------------------------------------//\r |
| 163 | case H_SPUirqAddr:\r |
| 164 | //if (val & 1)\r |
| 165 | // log_unhandled("w irq with lsb: %08lx %04x\n", reg, val);\r |
| 166 | spu.pSpuIrq = spu.spuMemC + (((int)val << 3) & ~0xf);\r |
| 167 | //check_irq_io(spu.spuAddr);\r |
| 168 | goto upd_irq;\r |
| 169 | //-------------------------------------------------//\r |
| 170 | case H_SPUrvolL:\r |
| 171 | spu.rvb->VolLeft = (int16_t)val;\r |
| 172 | break;\r |
| 173 | //-------------------------------------------------//\r |
| 174 | case H_SPUrvolR:\r |
| 175 | spu.rvb->VolRight = (int16_t)val;\r |
| 176 | break;\r |
| 177 | //-------------------------------------------------//\r |
| 178 | \r |
| 179 | case H_SPUmvolL:\r |
| 180 | case H_SPUmvolR: {\r |
| 181 | int ofs = H_SPUcmvolL - H_SPUmvolL;\r |
| 182 | unsigned short *cur = ®AreaGet(r + ofs);\r |
| 183 | if (val & 0x8000) {\r |
| 184 | // this (for now?) lacks an update mechanism, so is instant\r |
| 185 | log_unhandled("w master sweep: %08lx %04x\n", reg, val);\r |
| 186 | int was_neg = (*cur >> 14) & 1;\r |
| 187 | int dec = (val >> 13) & 1;\r |
| 188 | int inv = (val >> 12) & 1;\r |
| 189 | *cur = (was_neg ^ dec ^ inv) ? 0x7fff : 0;\r |
| 190 | }\r |
| 191 | else\r |
| 192 | *cur = val << 1;\r |
| 193 | break;\r |
| 194 | }\r |
| 195 | \r |
| 196 | case 0x0dac:\r |
| 197 | if (val != 4)\r |
| 198 | log_unhandled("1f801dac %04x\n", val);\r |
| 199 | break;\r |
| 200 | \r |
| 201 | /*\r |
| 202 | case H_ExtLeft:\r |
| 203 | //auxprintf("EL %d\n",val);\r |
| 204 | break;\r |
| 205 | //-------------------------------------------------//\r |
| 206 | case H_ExtRight:\r |
| 207 | //auxprintf("ER %d\n",val);\r |
| 208 | break;\r |
| 209 | //-------------------------------------------------//\r |
| 210 | case H_SPUMute1:\r |
| 211 | //auxprintf("M0 %04x\n",val);\r |
| 212 | break;\r |
| 213 | //-------------------------------------------------//\r |
| 214 | case H_SPUMute2:\r |
| 215 | //auxprintf("M1 %04x\n",val);\r |
| 216 | break;\r |
| 217 | */\r |
| 218 | //-------------------------------------------------//\r |
| 219 | case H_SPUon1:\r |
| 220 | spu.last_keyon_cycles = cycles;\r |
| 221 | do_samples_if_needed(cycles, 0, 2);\r |
| 222 | SoundOn(0,16,val);\r |
| 223 | break;\r |
| 224 | //-------------------------------------------------//\r |
| 225 | case H_SPUon2:\r |
| 226 | spu.last_keyon_cycles = cycles;\r |
| 227 | do_samples_if_needed(cycles, 0, 2);\r |
| 228 | SoundOn(16,24,val);\r |
| 229 | break;\r |
| 230 | //-------------------------------------------------//\r |
| 231 | case H_SPUoff1:\r |
| 232 | if (cycles - spu.last_keyon_cycles < 786u) {\r |
| 233 | if (val & regAreaGet(H_SPUon1))\r |
| 234 | log_unhandled("koff1 %04x %d\n", val, cycles - spu.last_keyon_cycles);\r |
| 235 | val &= ~regAreaGet(H_SPUon1);\r |
| 236 | }\r |
| 237 | do_samples_if_needed(cycles, 0, 2);\r |
| 238 | SoundOff(0,16,val);\r |
| 239 | break;\r |
| 240 | //-------------------------------------------------//\r |
| 241 | case H_SPUoff2:\r |
| 242 | if (cycles - spu.last_keyon_cycles < 786u) {\r |
| 243 | if (val & regAreaGet(H_SPUon1))\r |
| 244 | log_unhandled("koff2 %04x %d\n", val, cycles - spu.last_keyon_cycles);\r |
| 245 | val &= ~regAreaGet(H_SPUon2);\r |
| 246 | }\r |
| 247 | do_samples_if_needed(cycles, 0, 2);\r |
| 248 | SoundOff(16,24,val);\r |
| 249 | break;\r |
| 250 | //-------------------------------------------------//\r |
| 251 | case H_CDLeft:\r |
| 252 | spu.iLeftXAVol=(int16_t)val;\r |
| 253 | //if(spu.cddavCallback) spu.cddavCallback(0,(int16_t)val);\r |
| 254 | break;\r |
| 255 | case H_CDRight:\r |
| 256 | spu.iRightXAVol=(int16_t)val;\r |
| 257 | //if(spu.cddavCallback) spu.cddavCallback(1,(int16_t)val);\r |
| 258 | break;\r |
| 259 | //-------------------------------------------------//\r |
| 260 | case H_FMod1:\r |
| 261 | FModOn(0,16,val);\r |
| 262 | break;\r |
| 263 | //-------------------------------------------------//\r |
| 264 | case H_FMod2:\r |
| 265 | FModOn(16,24,val);\r |
| 266 | break;\r |
| 267 | //-------------------------------------------------//\r |
| 268 | case H_Noise1:\r |
| 269 | NoiseOn(0,16,val);\r |
| 270 | break;\r |
| 271 | //-------------------------------------------------//\r |
| 272 | case H_Noise2:\r |
| 273 | NoiseOn(16,24,val);\r |
| 274 | break;\r |
| 275 | //-------------------------------------------------//\r |
| 276 | case H_RVBon1:\r |
| 277 | ReverbOn(0,16,val);\r |
| 278 | break;\r |
| 279 | //-------------------------------------------------//\r |
| 280 | case H_RVBon2:\r |
| 281 | ReverbOn(16,24,val);\r |
| 282 | break;\r |
| 283 | //-------------------------------------------------//\r |
| 284 | case H_Reverb + 0x00 : goto rvbd;\r |
| 285 | case H_Reverb + 0x02 : goto rvbd;\r |
| 286 | case H_Reverb + 0x04 : spu.rvb->vIIR = (signed short)val; break;\r |
| 287 | case H_Reverb + 0x06 : spu.rvb->vCOMB1 = (signed short)val; break;\r |
| 288 | case H_Reverb + 0x08 : spu.rvb->vCOMB2 = (signed short)val; break;\r |
| 289 | case H_Reverb + 0x0a : spu.rvb->vCOMB3 = (signed short)val; break;\r |
| 290 | case H_Reverb + 0x0c : spu.rvb->vCOMB4 = (signed short)val; break;\r |
| 291 | case H_Reverb + 0x0e : spu.rvb->vWALL = (signed short)val; break;\r |
| 292 | case H_Reverb + 0x10 : spu.rvb->vAPF1 = (signed short)val; break;\r |
| 293 | case H_Reverb + 0x12 : spu.rvb->vAPF2 = (signed short)val; break;\r |
| 294 | case H_Reverb + 0x14 : goto rvbd;\r |
| 295 | case H_Reverb + 0x16 : goto rvbd;\r |
| 296 | case H_Reverb + 0x18 : goto rvbd;\r |
| 297 | case H_Reverb + 0x1a : goto rvbd;\r |
| 298 | case H_Reverb + 0x1c : goto rvbd;\r |
| 299 | case H_Reverb + 0x1e : goto rvbd;\r |
| 300 | case H_Reverb + 0x20 : goto rvbd;\r |
| 301 | case H_Reverb + 0x22 : goto rvbd;\r |
| 302 | case H_Reverb + 0x24 : goto rvbd;\r |
| 303 | case H_Reverb + 0x26 : goto rvbd;\r |
| 304 | case H_Reverb + 0x28 : goto rvbd;\r |
| 305 | case H_Reverb + 0x2a : goto rvbd;\r |
| 306 | case H_Reverb + 0x2c : goto rvbd;\r |
| 307 | case H_Reverb + 0x2e : goto rvbd;\r |
| 308 | case H_Reverb + 0x30 : goto rvbd;\r |
| 309 | case H_Reverb + 0x32 : goto rvbd;\r |
| 310 | case H_Reverb + 0x34 : goto rvbd;\r |
| 311 | case H_Reverb + 0x36 : goto rvbd;\r |
| 312 | case H_Reverb + 0x38 : goto rvbd;\r |
| 313 | case H_Reverb + 0x3a : goto rvbd;\r |
| 314 | case H_Reverb + 0x3c : spu.rvb->vLIN = (signed short)val; break;\r |
| 315 | case H_Reverb + 0x3e : spu.rvb->vRIN = (signed short)val; break;\r |
| 316 | }\r |
| 317 | return;\r |
| 318 | \r |
| 319 | upd_irq:\r |
| 320 | if (spu.spuCtrl & CTRL_IRQ)\r |
| 321 | schedule_next_irq();\r |
| 322 | return;\r |
| 323 | \r |
| 324 | rvbd:\r |
| 325 | spu.rvb->dirty = 1; // recalculate on next update\r |
| 326 | }\r |
| 327 | \r |
| 328 | ////////////////////////////////////////////////////////////////////////\r |
| 329 | // READ REGISTER: called by main emu\r |
| 330 | ////////////////////////////////////////////////////////////////////////\r |
| 331 | \r |
| 332 | unsigned short CALLBACK SPUreadRegister(unsigned long reg, unsigned int cycles)\r |
| 333 | {\r |
| 334 | const unsigned long r = reg & 0xffe;\r |
| 335 | \r |
| 336 | if(r>=0x0c00 && r<0x0d80)\r |
| 337 | {\r |
| 338 | switch(r&0x0f)\r |
| 339 | {\r |
| 340 | case 12: // get adsr vol\r |
| 341 | {\r |
| 342 | // this used to return 1 immediately after keyon to deal with\r |
| 343 | // some poor timing, but that causes Rayman 2 to lose track of\r |
| 344 | // it's channels on busy scenes and start looping some of them forever\r |
| 345 | const int ch = (r>>4) - 0xc0;\r |
| 346 | if (spu.s_chan[ch].bStarting)\r |
| 347 | do_samples_if_needed(cycles, 0, 2);\r |
| 348 | return (unsigned short)(spu.s_chan[ch].ADSRX.EnvelopeVol >> 16);\r |
| 349 | }\r |
| 350 | \r |
| 351 | case 14: // get loop address\r |
| 352 | {\r |
| 353 | const int ch=(r>>4)-0xc0;\r |
| 354 | return (unsigned short)((spu.s_chan[ch].pLoop-spu.spuMemC)>>3);\r |
| 355 | }\r |
| 356 | }\r |
| 357 | }\r |
| 358 | else if (0x0e00 <= r && r < 0x0e60)\r |
| 359 | {\r |
| 360 | int ch = (r >> 2) & 0x1f;\r |
| 361 | int v = spu.s_chan[ch].iVolume[(r >> 1) & 1] << 1;\r |
| 362 | log_unhandled("c%02d r %cvol %04x\n", ch, (r & 2) ? 'r' : 'l', v);\r |
| 363 | return v;\r |
| 364 | }\r |
| 365 | \r |
| 366 | switch(r)\r |
| 367 | {\r |
| 368 | case H_SPUctrl:\r |
| 369 | return spu.spuCtrl;\r |
| 370 | \r |
| 371 | case H_SPUstat:\r |
| 372 | return spu.spuStat;\r |
| 373 | \r |
| 374 | case H_SPUaddr:\r |
| 375 | return (unsigned short)(spu.spuAddr>>3);\r |
| 376 | \r |
| 377 | // this reportedly doesn't work on real hw\r |
| 378 | case H_SPUdata:\r |
| 379 | {\r |
| 380 | unsigned short s = LE16TOH(*(unsigned short *)(spu.spuMemC + spu.spuAddr));\r |
| 381 | spu.spuAddr += 2;\r |
| 382 | spu.spuAddr &= 0x7fffe;\r |
| 383 | //check_irq_io(spu.spuAddr);\r |
| 384 | return s;\r |
| 385 | }\r |
| 386 | \r |
| 387 | //case H_SPUIsOn1:\r |
| 388 | // return IsSoundOn(0,16);\r |
| 389 | \r |
| 390 | //case H_SPUIsOn2:\r |
| 391 | // return IsSoundOn(16,24);\r |
| 392 | \r |
| 393 | case H_SPUMute1:\r |
| 394 | case H_SPUMute2:\r |
| 395 | log_unhandled("spu r isOn: %08lx %04x\n", reg, regAreaGet(r));\r |
| 396 | break;\r |
| 397 | \r |
| 398 | case H_SPUmvolL:\r |
| 399 | case H_SPUmvolR:\r |
| 400 | log_unhandled("spu r mvol: %08lx %04x\n", reg, regAreaGet(r));\r |
| 401 | break;\r |
| 402 | \r |
| 403 | case 0x0dac:\r |
| 404 | case H_SPUirqAddr:\r |
| 405 | case H_CDLeft:\r |
| 406 | case H_CDRight:\r |
| 407 | case H_ExtLeft:\r |
| 408 | case H_ExtRight:\r |
| 409 | break;\r |
| 410 | \r |
| 411 | default:\r |
| 412 | if (r >= 0xda0)\r |
| 413 | log_unhandled("spu r %08lx %04x\n", reg, regAreaGet(r));\r |
| 414 | break;\r |
| 415 | }\r |
| 416 | \r |
| 417 | return spu.regArea[(r-0xc00)>>1];\r |
| 418 | }\r |
| 419 | \r |
| 420 | ////////////////////////////////////////////////////////////////////////\r |
| 421 | // SOUND ON register write\r |
| 422 | ////////////////////////////////////////////////////////////////////////\r |
| 423 | \r |
| 424 | static void SoundOn(int start,int end,unsigned short val)\r |
| 425 | {\r |
| 426 | int ch;\r |
| 427 | \r |
| 428 | for(ch=start;ch<end;ch++,val>>=1) // loop channels\r |
| 429 | {\r |
| 430 | if((val&1) && regAreaGetCh(ch, 6)) // mmm... start has to be set before key on !?!\r |
| 431 | {\r |
| 432 | spu.s_chan[ch].bIgnoreLoop = 0;\r |
| 433 | spu.s_chan[ch].bStarting = 1;\r |
| 434 | spu.dwNewChannel|=(1<<ch);\r |
| 435 | }\r |
| 436 | }\r |
| 437 | }\r |
| 438 | \r |
| 439 | ////////////////////////////////////////////////////////////////////////\r |
| 440 | // SOUND OFF register write\r |
| 441 | ////////////////////////////////////////////////////////////////////////\r |
| 442 | \r |
| 443 | static void SoundOff(int start,int end,unsigned short val)\r |
| 444 | {\r |
| 445 | int ch;\r |
| 446 | for (ch = start; val && ch < end; ch++, val >>= 1) // loop channels\r |
| 447 | {\r |
| 448 | if(val&1)\r |
| 449 | {\r |
| 450 | spu.s_chan[ch].ADSRX.State = ADSR_RELEASE;\r |
| 451 | \r |
| 452 | // Jungle Book - Rhythm 'n Groove\r |
| 453 | // - turns off buzzing sound (loop hangs)\r |
| 454 | spu.dwNewChannel &= ~(1<<ch);\r |
| 455 | } \r |
| 456 | }\r |
| 457 | }\r |
| 458 | \r |
| 459 | ////////////////////////////////////////////////////////////////////////\r |
| 460 | // FMOD register write\r |
| 461 | ////////////////////////////////////////////////////////////////////////\r |
| 462 | \r |
| 463 | static void FModOn(int start,int end,unsigned short val)\r |
| 464 | {\r |
| 465 | int ch;\r |
| 466 | \r |
| 467 | for(ch=start;ch<end;ch++,val>>=1) // loop channels\r |
| 468 | {\r |
| 469 | if(val&1) // -> fmod on/off\r |
| 470 | {\r |
| 471 | if(ch>0) \r |
| 472 | {\r |
| 473 | spu.s_chan[ch].bFMod=1; // --> sound channel\r |
| 474 | spu.s_chan[ch-1].bFMod=2; // --> freq channel\r |
| 475 | }\r |
| 476 | }\r |
| 477 | else\r |
| 478 | {\r |
| 479 | spu.s_chan[ch].bFMod=0; // --> turn off fmod\r |
| 480 | if(ch>0&&spu.s_chan[ch-1].bFMod==2)\r |
| 481 | spu.s_chan[ch-1].bFMod=0;\r |
| 482 | }\r |
| 483 | }\r |
| 484 | }\r |
| 485 | \r |
| 486 | ////////////////////////////////////////////////////////////////////////\r |
| 487 | // NOISE register write\r |
| 488 | ////////////////////////////////////////////////////////////////////////\r |
| 489 | \r |
| 490 | static void NoiseOn(int start,int end,unsigned short val)\r |
| 491 | {\r |
| 492 | int ch;\r |
| 493 | \r |
| 494 | for(ch=start;ch<end;ch++,val>>=1) // loop channels\r |
| 495 | {\r |
| 496 | spu.s_chan[ch].bNoise=val&1; // -> noise on/off\r |
| 497 | }\r |
| 498 | }\r |
| 499 | \r |
| 500 | ////////////////////////////////////////////////////////////////////////\r |
| 501 | // LEFT VOLUME register write\r |
| 502 | ////////////////////////////////////////////////////////////////////////\r |
| 503 | \r |
| 504 | // please note: sweep and phase invert are wrong... but I've never seen\r |
| 505 | // them used\r |
| 506 | \r |
| 507 | static void SetVolumeL(unsigned char ch,short vol) // LEFT VOLUME\r |
| 508 | {\r |
| 509 | if(vol&0x8000) // sweep?\r |
| 510 | {\r |
| 511 | short sInc=1; // -> sweep up?\r |
| 512 | log_unhandled("ch%d sweepl %04x\n", ch, vol);\r |
| 513 | if(vol&0x2000) sInc=-1; // -> or down?\r |
| 514 | if(vol&0x1000) vol^=0xffff; // -> mmm... phase inverted? have to investigate this\r |
| 515 | vol=((vol&0x7f)+1)/2; // -> sweep: 0..127 -> 0..64\r |
| 516 | vol+=vol/(2*sInc); // -> HACK: we don't sweep right now, so we just raise/lower the volume by the half!\r |
| 517 | vol*=128;\r |
| 518 | }\r |
| 519 | else // no sweep:\r |
| 520 | {\r |
| 521 | if(vol&0x4000) // -> mmm... phase inverted? have to investigate this\r |
| 522 | //vol^=0xffff;\r |
| 523 | vol=0x3fff-(vol&0x3fff);\r |
| 524 | }\r |
| 525 | \r |
| 526 | vol&=0x3fff;\r |
| 527 | spu.s_chan[ch].iLeftVolume=vol; // store volume\r |
| 528 | //spu.regArea[(0xe00-0xc00)/2 + ch*2 + 0] = vol << 1;\r |
| 529 | }\r |
| 530 | \r |
| 531 | ////////////////////////////////////////////////////////////////////////\r |
| 532 | // RIGHT VOLUME register write\r |
| 533 | ////////////////////////////////////////////////////////////////////////\r |
| 534 | \r |
| 535 | static void SetVolumeR(unsigned char ch,short vol) // RIGHT VOLUME\r |
| 536 | {\r |
| 537 | if(vol&0x8000) // comments... see above :)\r |
| 538 | {\r |
| 539 | short sInc=1;\r |
| 540 | log_unhandled("ch%d sweepr %04x\n", ch, vol);\r |
| 541 | if(vol&0x2000) sInc=-1;\r |
| 542 | if(vol&0x1000) vol^=0xffff;\r |
| 543 | vol=((vol&0x7f)+1)/2; \r |
| 544 | vol+=vol/(2*sInc);\r |
| 545 | vol*=128;\r |
| 546 | }\r |
| 547 | else \r |
| 548 | {\r |
| 549 | if(vol&0x4000) //vol=vol^=0xffff;\r |
| 550 | vol=0x3fff-(vol&0x3fff);\r |
| 551 | }\r |
| 552 | \r |
| 553 | vol&=0x3fff;\r |
| 554 | \r |
| 555 | spu.s_chan[ch].iRightVolume=vol;\r |
| 556 | //spu.regArea[(0xe00-0xc00)/2 + ch*2 + 1] = vol << 1;\r |
| 557 | }\r |
| 558 | \r |
| 559 | ////////////////////////////////////////////////////////////////////////\r |
| 560 | // PITCH register write\r |
| 561 | ////////////////////////////////////////////////////////////////////////\r |
| 562 | \r |
| 563 | static void SetPitch(int ch,unsigned short val) // SET PITCH\r |
| 564 | {\r |
| 565 | int NP;\r |
| 566 | if(val>0x3fff) NP=0x3fff; // get pitch val\r |
| 567 | else NP=val;\r |
| 568 | \r |
| 569 | spu.s_chan[ch].iRawPitch = NP;\r |
| 570 | spu.s_chan[ch].sinc = NP << 4;\r |
| 571 | spu.s_chan[ch].sinc_inv = 0;\r |
| 572 | \r |
| 573 | // don't mess spu.dwChannelsAudible as adsr runs independently\r |
| 574 | }\r |
| 575 | \r |
| 576 | ////////////////////////////////////////////////////////////////////////\r |
| 577 | // REVERB register write\r |
| 578 | ////////////////////////////////////////////////////////////////////////\r |
| 579 | \r |
| 580 | static void ReverbOn(int start,int end,unsigned short val)\r |
| 581 | {\r |
| 582 | int ch;\r |
| 583 | \r |
| 584 | for(ch=start;ch<end;ch++,val>>=1) // loop channels\r |
| 585 | {\r |
| 586 | spu.s_chan[ch].bReverb=val&1; // -> reverb on/off\r |
| 587 | }\r |
| 588 | }\r |
| 589 | \r |
| 590 | // vim:shiftwidth=1:expandtab\r |