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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25 static void SoundOn(int start,int end,unsigned short val);
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26 static void SoundOff(int start,int end,unsigned short val);
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27 static void FModOn(int start,int end,unsigned short val);
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28 static void NoiseOn(int start,int end,unsigned short val);
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29 static void SetVolumeL(unsigned char ch,short vol);
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30 static void SetVolumeR(unsigned char ch,short vol);
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31 static void SetPitch(int ch,unsigned short val);
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32 static void ReverbOn(int start,int end,unsigned short val);
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34 ////////////////////////////////////////////////////////////////////////
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35 // WRITE REGISTERS: called by main emu
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36 ////////////////////////////////////////////////////////////////////////
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38 static const uint32_t ignore_dupe[8] = {
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39 // ch 0-15 c40 c80 cc0
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40 0x7f7f7f7f, 0x7f7f7f7f, 0x7f7f7f7f, 0x7f7f7f7f,
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41 // ch 16-24 d40 control reverb
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42 0x7f7f7f7f, 0x7f7f7f7f, 0xff05ff0f, 0xffffffff
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45 void CALLBACK SPUwriteRegister(unsigned long reg, unsigned short val,
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46 unsigned int cycles)
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48 int r = reg & 0xfff;
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49 int rofs = (r - 0xc00) >> 1;
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50 int changed = regArea[rofs] != val;
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51 regArea[rofs] = val;
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53 if (!changed && (ignore_dupe[rofs >> 5] & (1 << (rofs & 0x1f))))
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55 // zero keyon/keyoff?
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56 if (val == 0 && (r & 0xff8) == 0xd88)
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59 do_samples_if_needed(cycles);
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61 if(r>=0x0c00 && r<0x0d80) // some channel info?
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63 int ch=(r>>4)-0xc0; // calc channel
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66 //------------------------------------------------// r volume
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68 SetVolumeL((unsigned char)ch,val);
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70 //------------------------------------------------// l volume
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72 SetVolumeR((unsigned char)ch,val);
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74 //------------------------------------------------// pitch
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78 //------------------------------------------------// start
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80 // taken from regArea later
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82 //------------------------------------------------// level with pre-calcs
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85 const unsigned long lval=val;
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86 //---------------------------------------------//
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87 s_chan[ch].ADSRX.AttackModeExp=(lval&0x8000)?1:0;
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88 s_chan[ch].ADSRX.AttackRate=(lval>>8) & 0x007f;
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89 s_chan[ch].ADSRX.DecayRate=(lval>>4) & 0x000f;
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90 s_chan[ch].ADSRX.SustainLevel=lval & 0x000f;
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91 //---------------------------------------------//
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94 //------------------------------------------------// adsr times with pre-calcs
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97 const unsigned long lval=val;
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99 //----------------------------------------------//
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100 s_chan[ch].ADSRX.SustainModeExp = (lval&0x8000)?1:0;
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101 s_chan[ch].ADSRX.SustainIncrease= (lval&0x4000)?0:1;
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102 s_chan[ch].ADSRX.SustainRate = (lval>>6) & 0x007f;
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103 s_chan[ch].ADSRX.ReleaseModeExp = (lval&0x0020)?1:0;
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104 s_chan[ch].ADSRX.ReleaseRate = lval & 0x001f;
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105 //----------------------------------------------//
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108 //------------------------------------------------// adsr volume... mmm have to investigate this
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111 //------------------------------------------------//
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113 s_chan[ch].pLoop=spuMemC+((val&~1)<<3);
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115 //------------------------------------------------//
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122 //-------------------------------------------------//
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124 spuAddr = (unsigned long) val<<3;
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126 //-------------------------------------------------//
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128 spuMem[spuAddr>>1] = val;
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130 if(spuAddr>0x7ffff) spuAddr=0;
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132 //-------------------------------------------------//
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134 if (!(spuCtrl & CTRL_IRQ)) {
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135 spuStat&=~STAT_IRQ;
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136 if (val & CTRL_IRQ)
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137 schedule_next_irq();
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141 //-------------------------------------------------//
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143 spuStat=val & 0xf800;
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145 //-------------------------------------------------//
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146 case H_SPUReverbAddr:
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147 if(val==0xFFFF || val<=0x200)
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148 {rvb.StartAddr=rvb.CurrAddr=0;}
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151 const long iv=(unsigned long)val<<2;
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152 if(rvb.StartAddr!=iv)
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154 rvb.StartAddr=(unsigned long)val<<2;
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155 rvb.CurrAddr=rvb.StartAddr;
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156 // sync-with-decode-buffers hack..
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157 if(rvb.StartAddr==0x3ff00)
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158 rvb.CurrAddr+=decode_pos/2;
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162 //-------------------------------------------------//
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165 pSpuIrq=spuMemC+(((unsigned long) val<<3)&~0xf);
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167 //-------------------------------------------------//
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171 //-------------------------------------------------//
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175 //-------------------------------------------------//
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179 //auxprintf("EL %d\n",val);
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181 //-------------------------------------------------//
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183 //auxprintf("ER %d\n",val);
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185 //-------------------------------------------------//
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187 //auxprintf("ML %d\n",val);
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189 //-------------------------------------------------//
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191 //auxprintf("MR %d\n",val);
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193 //-------------------------------------------------//
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195 //auxprintf("M0 %04x\n",val);
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197 //-------------------------------------------------//
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199 //auxprintf("M1 %04x\n",val);
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202 //-------------------------------------------------//
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206 //-------------------------------------------------//
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208 SoundOn(16,24,val);
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210 //-------------------------------------------------//
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212 SoundOff(0,16,val);
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214 //-------------------------------------------------//
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216 SoundOff(16,24,val);
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218 //-------------------------------------------------//
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220 iLeftXAVol=val & 0x7fff;
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221 if(cddavCallback) cddavCallback(0,val);
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224 iRightXAVol=val & 0x7fff;
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225 if(cddavCallback) cddavCallback(1,val);
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227 //-------------------------------------------------//
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231 //-------------------------------------------------//
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235 //-------------------------------------------------//
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239 //-------------------------------------------------//
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241 NoiseOn(16,24,val);
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243 //-------------------------------------------------//
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245 ReverbOn(0,16,val);
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247 //-------------------------------------------------//
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249 ReverbOn(16,24,val);
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251 //-------------------------------------------------//
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252 case H_Reverb+0 : rvb.FB_SRC_A=val*4; goto rvbd;
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253 case H_Reverb+2 : rvb.FB_SRC_B=val*4; goto rvbd;
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254 case H_Reverb+4 : rvb.IIR_ALPHA=(short)val; goto rvbd;
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255 case H_Reverb+6 : rvb.ACC_COEF_A=(short)val; goto rvbd;
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256 case H_Reverb+8 : rvb.ACC_COEF_B=(short)val; goto rvbd;
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257 case H_Reverb+10 : rvb.ACC_COEF_C=(short)val; goto rvbd;
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258 case H_Reverb+12 : rvb.ACC_COEF_D=(short)val; goto rvbd;
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259 case H_Reverb+14 : rvb.IIR_COEF=(short)val; goto rvbd;
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260 case H_Reverb+16 : rvb.FB_ALPHA=(short)val; goto rvbd;
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261 case H_Reverb+18 : rvb.FB_X=(short)val; goto rvbd;
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262 case H_Reverb+20 : rvb.IIR_DEST_A0=val*4; goto rvbd;
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263 case H_Reverb+22 : rvb.IIR_DEST_A1=val*4; goto rvbd;
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264 case H_Reverb+24 : rvb.ACC_SRC_A0=val*4; goto rvbd;
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265 case H_Reverb+26 : rvb.ACC_SRC_A1=val*4; goto rvbd;
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266 case H_Reverb+28 : rvb.ACC_SRC_B0=val*4; goto rvbd;
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267 case H_Reverb+30 : rvb.ACC_SRC_B1=val*4; goto rvbd;
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268 case H_Reverb+32 : rvb.IIR_SRC_A0=val*4; goto rvbd;
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269 case H_Reverb+34 : rvb.IIR_SRC_A1=val*4; goto rvbd;
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270 case H_Reverb+36 : rvb.IIR_DEST_B0=val*4; goto rvbd;
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271 case H_Reverb+38 : rvb.IIR_DEST_B1=val*4; goto rvbd;
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272 case H_Reverb+40 : rvb.ACC_SRC_C0=val*4; goto rvbd;
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273 case H_Reverb+42 : rvb.ACC_SRC_C1=val*4; goto rvbd;
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274 case H_Reverb+44 : rvb.ACC_SRC_D0=val*4; goto rvbd;
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275 case H_Reverb+46 : rvb.ACC_SRC_D1=val*4; goto rvbd;
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276 case H_Reverb+48 : rvb.IIR_SRC_B1=val*4; goto rvbd;
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277 case H_Reverb+50 : rvb.IIR_SRC_B0=val*4; goto rvbd;
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278 case H_Reverb+52 : rvb.MIX_DEST_A0=val*4; goto rvbd;
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279 case H_Reverb+54 : rvb.MIX_DEST_A1=val*4; goto rvbd;
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280 case H_Reverb+56 : rvb.MIX_DEST_B0=val*4; goto rvbd;
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281 case H_Reverb+58 : rvb.MIX_DEST_B1=val*4; goto rvbd;
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282 case H_Reverb+60 : rvb.IN_COEF_L=(short)val; goto rvbd;
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283 case H_Reverb+62 : rvb.IN_COEF_R=(short)val; goto rvbd;
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288 if (spuCtrl & CTRL_IRQ)
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289 schedule_next_irq();
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293 rvb.dirty = 1; // recalculate on next update
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296 ////////////////////////////////////////////////////////////////////////
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297 // READ REGISTER: called by main emu
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298 ////////////////////////////////////////////////////////////////////////
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300 unsigned short CALLBACK SPUreadRegister(unsigned long reg)
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302 const unsigned long r=reg&0xfff;
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304 if(r>=0x0c00 && r<0x0d80)
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308 case 12: // get adsr vol
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310 const int ch=(r>>4)-0xc0;
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311 if(dwNewChannel&(1<<ch)) return 1; // we are started, but not processed? return 1
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312 if((dwChannelOn&(1<<ch)) && // same here... we haven't decoded one sample yet, so no envelope yet. return 1 as well
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313 !s_chan[ch].ADSRX.EnvelopeVol)
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315 return (unsigned short)(s_chan[ch].ADSRX.EnvelopeVol>>16);
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318 case 14: // get loop address
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320 const int ch=(r>>4)-0xc0;
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321 return (unsigned short)((s_chan[ch].pLoop-spuMemC)>>3);
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335 return (unsigned short)(spuAddr>>3);
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339 unsigned short s=spuMem[spuAddr>>1];
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341 if(spuAddr>0x7ffff) spuAddr=0;
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349 // return IsSoundOn(0,16);
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352 // return IsSoundOn(16,24);
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356 return regArea[(r-0xc00)>>1];
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359 ////////////////////////////////////////////////////////////////////////
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360 // SOUND ON register write
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361 ////////////////////////////////////////////////////////////////////////
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363 static void SoundOn(int start,int end,unsigned short val)
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367 for(ch=start;ch<end;ch++,val>>=1) // loop channels
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369 if((val&1) && regAreaGet(ch,6)) // mmm... start has to be set before key on !?!
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371 // do this here, not in StartSound
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372 // - fixes fussy timing issues
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373 s_chan[ch].bStop=0;
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374 s_chan[ch].pCurr=spuMemC+((regAreaGet(ch,6)&~1)<<3); // must be block aligned
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375 s_chan[ch].pLoop=spuMemC+((regAreaGet(ch,14)&~1)<<3);
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376 s_chan[ch].prevflags=2;
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378 dwNewChannel|=(1<<ch); // bitfield for faster testing
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379 dwChannelOn|=1<<ch;
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380 dwChannelDead&=~(1<<ch);
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385 ////////////////////////////////////////////////////////////////////////
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386 // SOUND OFF register write
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387 ////////////////////////////////////////////////////////////////////////
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389 static void SoundOff(int start,int end,unsigned short val)
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392 for(ch=start;ch<end;ch++,val>>=1) // loop channels
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394 if(val&1) // && s_chan[i].bOn) mmm...
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396 s_chan[ch].bStop=1;
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398 // Jungle Book - Rhythm 'n Groove
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399 // - turns off buzzing sound (loop hangs)
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400 dwNewChannel &= ~(1<<ch);
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405 ////////////////////////////////////////////////////////////////////////
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406 // FMOD register write
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407 ////////////////////////////////////////////////////////////////////////
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409 static void FModOn(int start,int end,unsigned short val)
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413 for(ch=start;ch<end;ch++,val>>=1) // loop channels
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415 if(val&1) // -> fmod on/off
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419 s_chan[ch].bFMod=1; // --> sound channel
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420 s_chan[ch-1].bFMod=2; // --> freq channel
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425 s_chan[ch].bFMod=0; // --> turn off fmod
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426 if(ch>0&&s_chan[ch-1].bFMod==2)
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427 s_chan[ch-1].bFMod=0;
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432 ////////////////////////////////////////////////////////////////////////
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433 // NOISE register write
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434 ////////////////////////////////////////////////////////////////////////
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436 static void NoiseOn(int start,int end,unsigned short val)
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440 for(ch=start;ch<end;ch++,val>>=1) // loop channels
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442 s_chan[ch].bNoise=val&1; // -> noise on/off
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446 ////////////////////////////////////////////////////////////////////////
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447 // LEFT VOLUME register write
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448 ////////////////////////////////////////////////////////////////////////
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450 // please note: sweep and phase invert are wrong... but I've never seen
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453 static void SetVolumeL(unsigned char ch,short vol) // LEFT VOLUME
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455 if(vol&0x8000) // sweep?
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457 short sInc=1; // -> sweep up?
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458 if(vol&0x2000) sInc=-1; // -> or down?
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459 if(vol&0x1000) vol^=0xffff; // -> mmm... phase inverted? have to investigate this
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460 vol=((vol&0x7f)+1)/2; // -> sweep: 0..127 -> 0..64
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461 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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466 if(vol&0x4000) // -> mmm... phase inverted? have to investigate this
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468 vol=0x3fff-(vol&0x3fff);
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472 s_chan[ch].iLeftVolume=vol; // store volume
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475 ////////////////////////////////////////////////////////////////////////
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476 // RIGHT VOLUME register write
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477 ////////////////////////////////////////////////////////////////////////
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479 static void SetVolumeR(unsigned char ch,short vol) // RIGHT VOLUME
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481 if(vol&0x8000) // comments... see above :)
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484 if(vol&0x2000) sInc=-1;
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485 if(vol&0x1000) vol^=0xffff;
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486 vol=((vol&0x7f)+1)/2;
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492 if(vol&0x4000) //vol=vol^=0xffff;
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493 vol=0x3fff-(vol&0x3fff);
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498 s_chan[ch].iRightVolume=vol;
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501 ////////////////////////////////////////////////////////////////////////
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502 // PITCH register write
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503 ////////////////////////////////////////////////////////////////////////
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505 static void SetPitch(int ch,unsigned short val) // SET PITCH
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508 if(val>0x3fff) NP=0x3fff; // get pitch val
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511 s_chan[ch].iRawPitch=NP;
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512 s_chan[ch].sinc=(NP<<4)|8;
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513 s_chan[ch].sinc_inv=0;
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514 if(iUseInterpolation==1) s_chan[ch].SB[32]=1; // -> freq change in simple interpolation mode: set flag
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517 ////////////////////////////////////////////////////////////////////////
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518 // REVERB register write
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519 ////////////////////////////////////////////////////////////////////////
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521 static void ReverbOn(int start,int end,unsigned short val)
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525 for(ch=start;ch<end;ch++,val>>=1) // loop channels
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527 s_chan[ch].bReverb=val&1; // -> reverb on/off
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