1 /***************************************************************************
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2 registers.c - description
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4 begin : Wed May 15 2002
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5 copyright : (C) 2002 by Pete Bernert
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6 email : BlackDove@addcom.de
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7 ***************************************************************************/
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8 /***************************************************************************
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10 * This program is free software; you can redistribute it and/or modify *
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11 * it under the terms of the GNU General Public License as published by *
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12 * the Free Software Foundation; either version 2 of the License, or *
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13 * (at your option) any later version. See also the license.txt file for *
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14 * additional informations. *
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16 ***************************************************************************/
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20 #define _IN_REGISTERS
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22 #include "externals.h"
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23 #include "registers.h"
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28 // adsr time values (in ms) by James Higgs ... see the end of
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29 // the adsr.c source for details
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31 #define ATTACK_MS 514L
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32 #define DECAYHALF_MS 292L
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33 #define DECAY_MS 584L
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34 #define SUSTAIN_MS 450L
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35 #define RELEASE_MS 446L
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38 // we have a timebase of 1.020408f ms, not 1 ms... so adjust adsr defines
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39 #define ATTACK_MS 494L
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40 #define DECAYHALF_MS 286L
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41 #define DECAY_MS 572L
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42 #define SUSTAIN_MS 441L
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43 #define RELEASE_MS 437L
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45 ////////////////////////////////////////////////////////////////////////
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46 // WRITE REGISTERS: called by main emu
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47 ////////////////////////////////////////////////////////////////////////
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49 void CALLBACK SPUwriteRegister(unsigned long reg, unsigned short val)
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51 const unsigned long r=reg&0xfff;
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52 regArea[(r-0xc00)>>1] = val;
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54 if(r>=0x0c00 && r<0x0d80) // some channel info?
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56 int ch=(r>>4)-0xc0; // calc channel
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59 //------------------------------------------------// r volume
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61 SetVolumeL((unsigned char)ch,val);
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63 //------------------------------------------------// l volume
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65 SetVolumeR((unsigned char)ch,val);
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67 //------------------------------------------------// pitch
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71 //------------------------------------------------// start
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73 // Brain Dead 13 - align to 16 boundary
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74 s_chan[ch].pStart= spuMemC+(unsigned long)((val<<3)&~0xf);
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76 //------------------------------------------------// level with pre-calcs
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79 const unsigned long lval=val;unsigned long lx;
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80 //---------------------------------------------//
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81 s_chan[ch].ADSRX.AttackModeExp=(lval&0x8000)?1:0;
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82 s_chan[ch].ADSRX.AttackRate=(lval>>8) & 0x007f;
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83 s_chan[ch].ADSRX.DecayRate=(lval>>4) & 0x000f;
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84 s_chan[ch].ADSRX.SustainLevel=lval & 0x000f;
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85 //---------------------------------------------//
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86 if(!iDebugMode) break;
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87 //---------------------------------------------// stuff below is only for debug mode
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89 s_chan[ch].ADSR.AttackModeExp=(lval&0x8000)?1:0; //0x007f
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91 lx=(((lval>>8) & 0x007f)>>2); // attack time to run from 0 to 100% volume
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92 lx=min(31,lx); // no overflow on shift!
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96 if(lx<2147483) lx=(lx*ATTACK_MS)/10000L; // another overflow check
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97 else lx=(lx/10000L)*ATTACK_MS;
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100 s_chan[ch].ADSR.AttackTime=lx;
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102 s_chan[ch].ADSR.SustainLevel= // our adsr vol runs from 0 to 1024, so scale the sustain level
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103 (1024*((lval) & 0x000f))/15;
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105 lx=(lval>>4) & 0x000f; // decay:
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106 if(lx) // our const decay value is time it takes from 100% to 0% of volume
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108 lx = ((1<<(lx))*DECAY_MS)/10000L;
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111 s_chan[ch].ADSR.DecayTime = // so calc how long does it take to run from 100% to the wanted sus level
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112 (lx*(1024-s_chan[ch].ADSR.SustainLevel))/1024;
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115 //------------------------------------------------// adsr times with pre-calcs
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118 const unsigned long lval=val;unsigned long lx;
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120 //----------------------------------------------//
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121 s_chan[ch].ADSRX.SustainModeExp = (lval&0x8000)?1:0;
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122 s_chan[ch].ADSRX.SustainIncrease= (lval&0x4000)?0:1;
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123 s_chan[ch].ADSRX.SustainRate = (lval>>6) & 0x007f;
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124 s_chan[ch].ADSRX.ReleaseModeExp = (lval&0x0020)?1:0;
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125 s_chan[ch].ADSRX.ReleaseRate = lval & 0x001f;
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126 //----------------------------------------------//
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127 if(!iDebugMode) break;
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128 //----------------------------------------------// stuff below is only for debug mode
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130 s_chan[ch].ADSR.SustainModeExp = (lval&0x8000)?1:0;
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131 s_chan[ch].ADSR.ReleaseModeExp = (lval&0x0020)?1:0;
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133 lx=((((lval>>6) & 0x007f)>>2)); // sustain time... often very high
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134 lx=min(31,lx); // values are used to hold the volume
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135 if(lx) // until a sound stop occurs
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136 { // the highest value we reach (due to
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137 lx = (1<<lx); // overflow checking) is:
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138 if(lx<2147483) lx=(lx*SUSTAIN_MS)/10000L; // 94704 seconds = 1578 minutes = 26 hours...
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139 else lx=(lx/10000L)*SUSTAIN_MS; // should be enuff... if the stop doesn't
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140 if(!lx) lx=1; // come in this time span, I don't care :)
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142 s_chan[ch].ADSR.SustainTime = lx;
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144 lx=(lval & 0x001f);
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145 s_chan[ch].ADSR.ReleaseVal =lx;
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146 if(lx) // release time from 100% to 0%
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147 { // note: the release time will be
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148 lx = (1<<lx); // adjusted when a stop is coming,
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149 if(lx<2147483) lx=(lx*RELEASE_MS)/10000L; // so at this time the adsr vol will
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150 else lx=(lx/10000L)*RELEASE_MS; // run from (current volume) to 0%
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153 s_chan[ch].ADSR.ReleaseTime=lx;
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155 if(lval & 0x4000) // add/dec flag
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156 s_chan[ch].ADSR.SustainModeDec=-1;
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157 else s_chan[ch].ADSR.SustainModeDec=1;
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160 //------------------------------------------------// adsr volume... mmm have to investigate this
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163 //------------------------------------------------//
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165 //WaitForSingleObject(s_chan[ch].hMutex,2000); // -> no multithread fuckups
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166 s_chan[ch].pLoop=spuMemC+((unsigned long)((val<<3)&~0xf));
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167 s_chan[ch].bIgnoreLoop=1;
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168 //ReleaseMutex(s_chan[ch].hMutex); // -> oki, on with the thread
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170 //------------------------------------------------//
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178 //-------------------------------------------------//
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180 spuAddr = (unsigned long) val<<3;
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182 //-------------------------------------------------//
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184 spuMem[spuAddr>>1] = val;
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186 if(spuAddr>0x7ffff) spuAddr=0;
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188 //-------------------------------------------------//
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192 //-------------------------------------------------//
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194 spuStat=val & 0xf800;
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196 //-------------------------------------------------//
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197 case H_SPUReverbAddr:
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198 if(val==0xFFFF || val<=0x200)
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199 {rvb.StartAddr=rvb.CurrAddr=0;}
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202 const long iv=(unsigned long)val<<2;
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203 if(rvb.StartAddr!=iv)
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205 rvb.StartAddr=(unsigned long)val<<2;
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206 rvb.CurrAddr=rvb.StartAddr;
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210 //-------------------------------------------------//
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213 pSpuIrq=spuMemC+((unsigned long) val<<3);
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215 //-------------------------------------------------//
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219 //-------------------------------------------------//
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223 //-------------------------------------------------//
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227 //auxprintf("EL %d\n",val);
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229 //-------------------------------------------------//
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231 //auxprintf("ER %d\n",val);
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233 //-------------------------------------------------//
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235 //auxprintf("ML %d\n",val);
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237 //-------------------------------------------------//
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239 //auxprintf("MR %d\n",val);
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241 //-------------------------------------------------//
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243 //auxprintf("M0 %04x\n",val);
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245 //-------------------------------------------------//
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247 //auxprintf("M1 %04x\n",val);
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250 //-------------------------------------------------//
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254 //-------------------------------------------------//
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256 SoundOn(16,24,val);
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258 //-------------------------------------------------//
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260 SoundOff(0,16,val);
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262 //-------------------------------------------------//
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264 SoundOff(16,24,val);
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266 //-------------------------------------------------//
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268 iLeftXAVol=val & 0x7fff;
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269 if(cddavCallback) cddavCallback(0,val);
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272 iRightXAVol=val & 0x7fff;
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273 if(cddavCallback) cddavCallback(1,val);
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275 //-------------------------------------------------//
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279 //-------------------------------------------------//
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283 //-------------------------------------------------//
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287 //-------------------------------------------------//
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289 NoiseOn(16,24,val);
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291 //-------------------------------------------------//
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293 ReverbOn(0,16,val);
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295 //-------------------------------------------------//
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297 ReverbOn(16,24,val);
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299 //-------------------------------------------------//
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304 // OK, here's the fake REVERB stuff...
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305 // depending on effect we do more or less delay and repeats... bah
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306 // still... better than nothing :)
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312 case H_Reverb+2 : rvb.FB_SRC_B=(short)val; break;
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313 case H_Reverb+4 : rvb.IIR_ALPHA=(short)val; break;
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314 case H_Reverb+6 : rvb.ACC_COEF_A=(short)val; break;
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315 case H_Reverb+8 : rvb.ACC_COEF_B=(short)val; break;
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316 case H_Reverb+10 : rvb.ACC_COEF_C=(short)val; break;
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317 case H_Reverb+12 : rvb.ACC_COEF_D=(short)val; break;
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318 case H_Reverb+14 : rvb.IIR_COEF=(short)val; break;
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319 case H_Reverb+16 : rvb.FB_ALPHA=(short)val; break;
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320 case H_Reverb+18 : rvb.FB_X=(short)val; break;
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321 case H_Reverb+20 : rvb.IIR_DEST_A0=(short)val; break;
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322 case H_Reverb+22 : rvb.IIR_DEST_A1=(short)val; break;
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323 case H_Reverb+24 : rvb.ACC_SRC_A0=(short)val; break;
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324 case H_Reverb+26 : rvb.ACC_SRC_A1=(short)val; break;
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325 case H_Reverb+28 : rvb.ACC_SRC_B0=(short)val; break;
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326 case H_Reverb+30 : rvb.ACC_SRC_B1=(short)val; break;
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327 case H_Reverb+32 : rvb.IIR_SRC_A0=(short)val; break;
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328 case H_Reverb+34 : rvb.IIR_SRC_A1=(short)val; break;
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329 case H_Reverb+36 : rvb.IIR_DEST_B0=(short)val; break;
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330 case H_Reverb+38 : rvb.IIR_DEST_B1=(short)val; break;
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331 case H_Reverb+40 : rvb.ACC_SRC_C0=(short)val; break;
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332 case H_Reverb+42 : rvb.ACC_SRC_C1=(short)val; break;
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333 case H_Reverb+44 : rvb.ACC_SRC_D0=(short)val; break;
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334 case H_Reverb+46 : rvb.ACC_SRC_D1=(short)val; break;
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335 case H_Reverb+48 : rvb.IIR_SRC_B1=(short)val; break;
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336 case H_Reverb+50 : rvb.IIR_SRC_B0=(short)val; break;
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337 case H_Reverb+52 : rvb.MIX_DEST_A0=(short)val; break;
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338 case H_Reverb+54 : rvb.MIX_DEST_A1=(short)val; break;
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339 case H_Reverb+56 : rvb.MIX_DEST_B0=(short)val; break;
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340 case H_Reverb+58 : rvb.MIX_DEST_B1=(short)val; break;
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341 case H_Reverb+60 : rvb.IN_COEF_L=(short)val; break;
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342 case H_Reverb+62 : rvb.IN_COEF_R=(short)val; break;
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348 ////////////////////////////////////////////////////////////////////////
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349 // READ REGISTER: called by main emu
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350 ////////////////////////////////////////////////////////////////////////
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352 unsigned short CALLBACK SPUreadRegister(unsigned long reg)
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354 const unsigned long r=reg&0xfff;
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358 if(r>=0x0c00 && r<0x0d80)
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362 case 12: // get adsr vol
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364 const int ch=(r>>4)-0xc0;
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365 if(s_chan[ch].bNew) return 1; // we are started, but not processed? return 1
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366 if(s_chan[ch].ADSRX.lVolume && // same here... we haven't decoded one sample yet, so no envelope yet. return 1 as well
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367 !s_chan[ch].ADSRX.EnvelopeVol)
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369 return (unsigned short)(s_chan[ch].ADSRX.EnvelopeVol>>16);
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372 case 14: // get loop address
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374 const int ch=(r>>4)-0xc0;
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375 if(s_chan[ch].pLoop==NULL) return 0;
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376 return (unsigned short)((s_chan[ch].pLoop-spuMemC)>>3);
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390 return (unsigned short)(spuAddr>>3);
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394 unsigned short s=spuMem[spuAddr>>1];
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396 if(spuAddr>0x7ffff) spuAddr=0;
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404 // return IsSoundOn(0,16);
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407 // return IsSoundOn(16,24);
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411 return regArea[(r-0xc00)>>1];
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414 ////////////////////////////////////////////////////////////////////////
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415 // SOUND ON register write
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416 ////////////////////////////////////////////////////////////////////////
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418 void SoundOn(int start,int end,unsigned short val) // SOUND ON PSX COMAND
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422 for(ch=start;ch<end;ch++,val>>=1) // loop channels
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424 if((val&1) && s_chan[ch].pStart) // mmm... start has to be set before key on !?!
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426 s_chan[ch].bIgnoreLoop=0;
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429 // do this here, not in StartSound
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430 // - fixes fussy timing issues
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431 s_chan[ch].bStop=0;
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433 s_chan[ch].pCurr=s_chan[ch].pStart;
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435 dwNewChannel|=(1<<ch); // bitfield for faster testing
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440 ////////////////////////////////////////////////////////////////////////
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441 // SOUND OFF register write
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442 ////////////////////////////////////////////////////////////////////////
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444 void SoundOff(int start,int end,unsigned short val) // SOUND OFF PSX COMMAND
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447 for(ch=start;ch<end;ch++,val>>=1) // loop channels
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449 if(val&1) // && s_chan[i].bOn) mmm...
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451 s_chan[ch].bStop=1;
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453 // Jungle Book - Rhythm 'n Groove
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454 // - turns off buzzing sound (loop hangs)
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456 dwNewChannel &= ~(1<<ch);
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461 ////////////////////////////////////////////////////////////////////////
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462 // FMOD register write
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463 ////////////////////////////////////////////////////////////////////////
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465 void FModOn(int start,int end,unsigned short val) // FMOD ON PSX COMMAND
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469 for(ch=start;ch<end;ch++,val>>=1) // loop channels
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471 if(val&1) // -> fmod on/off
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475 s_chan[ch].bFMod=1; // --> sound channel
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476 s_chan[ch-1].bFMod=2; // --> freq channel
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481 s_chan[ch].bFMod=0; // --> turn off fmod
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486 ////////////////////////////////////////////////////////////////////////
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487 // NOISE register write
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488 ////////////////////////////////////////////////////////////////////////
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490 void NoiseOn(int start,int end,unsigned short val) // NOISE ON PSX COMMAND
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494 for(ch=start;ch<end;ch++,val>>=1) // loop channels
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496 if(val&1) // -> noise on/off
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498 s_chan[ch].bNoise=1;
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502 s_chan[ch].bNoise=0;
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507 ////////////////////////////////////////////////////////////////////////
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508 // LEFT VOLUME register write
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509 ////////////////////////////////////////////////////////////////////////
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511 // please note: sweep and phase invert are wrong... but I've never seen
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514 void SetVolumeL(unsigned char ch,short vol) // LEFT VOLUME
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516 s_chan[ch].iLeftVolRaw=vol;
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518 if(vol&0x8000) // sweep?
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520 short sInc=1; // -> sweep up?
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521 if(vol&0x2000) sInc=-1; // -> or down?
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522 if(vol&0x1000) vol^=0xffff; // -> mmm... phase inverted? have to investigate this
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523 vol=((vol&0x7f)+1)/2; // -> sweep: 0..127 -> 0..64
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524 vol+=vol/(2*sInc); // -> HACK: we don't sweep right now, so we just raise/lower the volume by the half!
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529 if(vol&0x4000) // -> mmm... phase inverted? have to investigate this
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531 vol=0x3fff-(vol&0x3fff);
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535 s_chan[ch].iLeftVolume=vol; // store volume
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538 ////////////////////////////////////////////////////////////////////////
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539 // RIGHT VOLUME register write
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540 ////////////////////////////////////////////////////////////////////////
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542 void SetVolumeR(unsigned char ch,short vol) // RIGHT VOLUME
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544 s_chan[ch].iRightVolRaw=vol;
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546 if(vol&0x8000) // comments... see above :)
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549 if(vol&0x2000) sInc=-1;
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550 if(vol&0x1000) vol^=0xffff;
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551 vol=((vol&0x7f)+1)/2;
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557 if(vol&0x4000) //vol=vol^=0xffff;
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558 vol=0x3fff-(vol&0x3fff);
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563 s_chan[ch].iRightVolume=vol;
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566 ////////////////////////////////////////////////////////////////////////
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567 // PITCH register write
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568 ////////////////////////////////////////////////////////////////////////
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570 void SetPitch(int ch,unsigned short val) // SET PITCH
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573 if(val>0x3fff) NP=0x3fff; // get pitch val
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576 s_chan[ch].iRawPitch=NP;
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578 NP=(44100L*NP)/4096L; // calc frequency
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579 if(NP<1) NP=1; // some security
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580 s_chan[ch].iActFreq=NP; // store frequency
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583 ////////////////////////////////////////////////////////////////////////
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584 // REVERB register write
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585 ////////////////////////////////////////////////////////////////////////
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587 void ReverbOn(int start,int end,unsigned short val) // REVERB ON PSX COMMAND
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591 for(ch=start;ch<end;ch++,val>>=1) // loop channels
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593 if(val&1) // -> reverb on/off
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595 s_chan[ch].bReverb=1;
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599 s_chan[ch].bReverb=0;
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