1 /***********************************************************
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3 * This source was taken from the Gens project *
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4 * Written by Stéphane Dallongeville *
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5 * Copyright (c) 2002 by Stéphane Dallongeville *
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6 * Modified/adapted for PicoDrive by notaz, 2007 *
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8 ***********************************************************/
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12 #include "cd_file.h"
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14 #include "../PicoInt.h"
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16 #define cdprintf dprintf
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17 //#define cdprintf(x...)
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20 #define TRAY_OPEN 0x0500 // TRAY OPEN CDD status
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21 #define NOCD 0x0000 // CD removed CDD status
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22 #define STOPPED 0x0900 // STOPPED CDD status (happen after stop or close tray command)
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23 #define READY 0x0400 // READY CDD status (also used for seeking)
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24 #define FAST_FOW 0x0300 // FAST FORWARD track CDD status
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25 #define FAST_REV 0x10300 // FAST REVERSE track CDD status
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26 #define PLAYING 0x0100 // PLAYING audio track CDD status
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29 static int CD_Present = 0;
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32 #define CHECK_TRAY_OPEN \
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33 if (Pico_mcd->scd.Status_CDD == TRAY_OPEN) \
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35 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD; \
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37 Pico_mcd->cdd.Minute = 0; \
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38 Pico_mcd->cdd.Seconde = 0; \
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39 Pico_mcd->cdd.Frame = 0; \
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40 Pico_mcd->cdd.Ext = 0; \
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42 Pico_mcd->scd.CDD_Complete = 1; \
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48 #define CHECK_CD_PRESENT \
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51 Pico_mcd->scd.Status_CDD = NOCD; \
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52 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD; \
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54 Pico_mcd->cdd.Minute = 0; \
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55 Pico_mcd->cdd.Seconde = 0; \
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56 Pico_mcd->cdd.Frame = 0; \
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57 Pico_mcd->cdd.Ext = 0; \
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59 Pico_mcd->scd.CDD_Complete = 1; \
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65 static int MSF_to_LBA(_msf *MSF)
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67 return (MSF->M * 60 * 75) + (MSF->S * 75) + MSF->F - 150;
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71 void LBA_to_MSF(int lba, _msf *MSF)
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73 if (lba < -150) lba = 0;
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75 MSF->M = lba / (60 * 75);
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76 MSF->S = (lba / 75) % 60;
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81 static unsigned int MSF_to_Track(_msf *MSF)
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85 Start = (MSF->M << 16) + (MSF->S << 8) + MSF->F;
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87 for(i = 1; i <= (Pico_mcd->TOC.Last_Track + 1); i++)
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89 Cur = Pico_mcd->TOC.Tracks[i - 1].MSF.M << 16;
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90 Cur += Pico_mcd->TOC.Tracks[i - 1].MSF.S << 8;
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91 Cur += Pico_mcd->TOC.Tracks[i - 1].MSF.F;
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93 if (Cur > Start) break;
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98 if (i > Pico_mcd->TOC.Last_Track) return 100;
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99 else if (i < 1) i = 1;
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101 return (unsigned) i;
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105 static unsigned int LBA_to_Track(int lba)
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109 LBA_to_MSF(lba, &MSF);
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110 return MSF_to_Track(&MSF);
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114 static void Track_to_MSF(int track, _msf *MSF)
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116 if (track < 1) track = 1;
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117 else if (track > Pico_mcd->TOC.Last_Track) track = Pico_mcd->TOC.Last_Track;
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119 MSF->M = Pico_mcd->TOC.Tracks[track - 1].MSF.M;
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120 MSF->S = Pico_mcd->TOC.Tracks[track - 1].MSF.S;
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121 MSF->F = Pico_mcd->TOC.Tracks[track - 1].MSF.F;
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125 int Track_to_LBA(int track)
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129 Track_to_MSF(track, &MSF);
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130 return MSF_to_LBA(&MSF);
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134 void Check_CD_Command(void)
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136 cdprintf("CHECK CD COMMAND");
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139 if (Pico_mcd->scd.Status_CDC & 1) // CDC is reading data ...
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141 cdprintf("Got a read command");
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144 if (Pico_mcd->scd.Cur_Track == 1)
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145 Pico_mcd->s68k_regs[0x36] |= 0x01;
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146 else Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO
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148 if (Pico_mcd->scd.File_Add_Delay == 0)
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150 FILE_Read_One_LBA_CDC();
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152 else Pico_mcd->scd.File_Add_Delay--;
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156 if (Pico_mcd->scd.CDD_Complete)
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158 Pico_mcd->scd.CDD_Complete = 0;
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160 CDD_Export_Status();
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163 if (Pico_mcd->scd.Status_CDD == FAST_FOW)
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165 Pico_mcd->scd.Cur_LBA += 10;
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166 CDC_Update_Header();
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169 else if (Pico_mcd->scd.Status_CDD == FAST_REV)
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171 Pico_mcd->scd.Cur_LBA -= 10;
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172 if (Pico_mcd->scd.Cur_LBA < -150) Pico_mcd->scd.Cur_LBA = -150;
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173 CDC_Update_Header();
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178 int Init_CD_Driver(void)
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184 void End_CD_Driver(void)
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190 void Reset_CD(void)
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192 Pico_mcd->scd.Cur_Track = 0;
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193 Pico_mcd->scd.Cur_LBA = -150;
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194 Pico_mcd->scd.Status_CDC &= ~1;
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195 Pico_mcd->scd.Status_CDD = CD_Present ? READY : NOCD;
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196 Pico_mcd->scd.CDD_Complete = 0;
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197 Pico_mcd->scd.File_Add_Delay = 0;
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201 int Insert_CD(char *iso_name, int is_bin)
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205 // memset(CD_Audio_Buffer_L, 0, 4096 * 4);
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206 // memset(CD_Audio_Buffer_R, 0, 4096 * 4);
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209 Pico_mcd->scd.Status_CDD = NOCD;
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211 if (iso_name != NULL)
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213 ret = Load_ISO(iso_name, is_bin);
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216 Pico_mcd->scd.Status_CDD = READY;
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231 void Change_CD(void)
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233 if (Pico_mcd->scd.Status_CDD == TRAY_OPEN) Close_Tray_CDD_cC();
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234 else Open_Tray_CDD_cD();
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238 int Get_Status_CDD_c0(void)
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240 cdprintf("Status command : Cur LBA = %d", Pico_mcd->scd.Cur_LBA);
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242 // Clear immediat status
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243 if ((Pico_mcd->cdd.Status & 0x0F00) == 0x0200)
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244 Pico_mcd->cdd.Status = (Pico_mcd->scd.Status_CDD & 0xFF00) | (Pico_mcd->cdd.Status & 0x00FF);
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245 else if ((Pico_mcd->cdd.Status & 0x0F00) == 0x0700)
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246 Pico_mcd->cdd.Status = (Pico_mcd->scd.Status_CDD & 0xFF00) | (Pico_mcd->cdd.Status & 0x00FF);
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247 else if ((Pico_mcd->cdd.Status & 0x0F00) == 0x0E00)
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248 Pico_mcd->cdd.Status = (Pico_mcd->scd.Status_CDD & 0xFF00) | (Pico_mcd->cdd.Status & 0x00FF);
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250 Pico_mcd->scd.CDD_Complete = 1;
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256 int Stop_CDD_c1(void)
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260 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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262 if (CD_Present) Pico_mcd->scd.Status_CDD = STOPPED;
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263 else Pico_mcd->scd.Status_CDD = NOCD;
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264 Pico_mcd->cdd.Status = 0x0000;
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266 Pico_mcd->s68k_regs[0x36] |= 0x01; // Data bit set because stopped
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268 Pico_mcd->cdd.Minute = 0;
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269 Pico_mcd->cdd.Seconde = 0;
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270 Pico_mcd->cdd.Frame = 0;
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271 Pico_mcd->cdd.Ext = 0;
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273 Pico_mcd->scd.CDD_Complete = 1;
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279 int Get_Pos_CDD_c20(void)
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283 cdprintf("command 200 : Cur LBA = %d", Pico_mcd->scd.Cur_LBA);
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287 Pico_mcd->cdd.Status &= 0xFF;
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290 Pico_mcd->scd.Status_CDD = NOCD;
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291 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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293 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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294 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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296 cdprintf("Status CDD = %.4X Status = %.4X", Pico_mcd->scd.Status_CDD, Pico_mcd->cdd.Status);
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298 LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);
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300 Pico_mcd->cdd.Minute = INT_TO_BCDW(MSF.M);
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301 Pico_mcd->cdd.Seconde = INT_TO_BCDW(MSF.S);
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302 Pico_mcd->cdd.Frame = INT_TO_BCDW(MSF.F);
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303 Pico_mcd->cdd.Ext = 0;
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305 Pico_mcd->scd.CDD_Complete = 1;
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311 int Get_Track_Pos_CDD_c21(void)
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316 cdprintf("command 201 : Cur LBA = %d", Pico_mcd->scd.Cur_LBA);
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320 Pico_mcd->cdd.Status &= 0xFF;
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323 Pico_mcd->scd.Status_CDD = NOCD;
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324 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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326 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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327 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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329 elapsed_time = Pico_mcd->scd.Cur_LBA - Track_to_LBA(LBA_to_Track(Pico_mcd->scd.Cur_LBA));
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330 LBA_to_MSF(elapsed_time - 150, &MSF);
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332 cdprintf(" elapsed = %d", elapsed_time);
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334 Pico_mcd->cdd.Minute = INT_TO_BCDW(MSF.M);
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335 Pico_mcd->cdd.Seconde = INT_TO_BCDW(MSF.S);
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336 Pico_mcd->cdd.Frame = INT_TO_BCDW(MSF.F);
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337 Pico_mcd->cdd.Ext = 0;
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339 Pico_mcd->scd.CDD_Complete = 1;
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345 int Get_Current_Track_CDD_c22(void)
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347 cdprintf("Status CDD = %.4X Status = %.4X", Pico_mcd->scd.Status_CDD, Pico_mcd->cdd.Status);
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351 Pico_mcd->cdd.Status &= 0xFF;
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354 Pico_mcd->scd.Status_CDD = NOCD;
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355 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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357 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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358 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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360 Pico_mcd->scd.Cur_Track = LBA_to_Track(Pico_mcd->scd.Cur_LBA);
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362 if (Pico_mcd->scd.Cur_Track == 100) Pico_mcd->cdd.Minute = 0x0A02;
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363 else Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
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364 Pico_mcd->cdd.Seconde = 0;
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365 Pico_mcd->cdd.Frame = 0;
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366 Pico_mcd->cdd.Ext = 0;
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368 Pico_mcd->scd.CDD_Complete = 1;
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374 int Get_Total_Lenght_CDD_c23(void)
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378 Pico_mcd->cdd.Status &= 0xFF;
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381 Pico_mcd->scd.Status_CDD = NOCD;
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382 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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384 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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385 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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387 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->TOC.Tracks[Pico_mcd->TOC.Last_Track].MSF.M);
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388 Pico_mcd->cdd.Seconde = INT_TO_BCDW(Pico_mcd->TOC.Tracks[Pico_mcd->TOC.Last_Track].MSF.S);
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389 Pico_mcd->cdd.Frame = INT_TO_BCDW(Pico_mcd->TOC.Tracks[Pico_mcd->TOC.Last_Track].MSF.F);
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390 Pico_mcd->cdd.Ext = 0;
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392 Pico_mcd->scd.CDD_Complete = 1;
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398 int Get_First_Last_Track_CDD_c24(void)
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402 Pico_mcd->cdd.Status &= 0xFF;
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405 Pico_mcd->scd.Status_CDD = NOCD;
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407 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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408 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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410 Pico_mcd->cdd.Minute = INT_TO_BCDW(1);
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411 Pico_mcd->cdd.Seconde = INT_TO_BCDW(Pico_mcd->TOC.Last_Track);
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412 Pico_mcd->cdd.Frame = 0;
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413 Pico_mcd->cdd.Ext = 0;
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415 Pico_mcd->scd.CDD_Complete = 1;
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421 int Get_Track_Adr_CDD_c25(void)
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427 // track number in TC4 & TC5
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429 track_number = (Pico_mcd->s68k_regs[0x38+10+4] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+5] & 0xF);
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431 Pico_mcd->cdd.Status &= 0xFF;
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434 Pico_mcd->scd.Status_CDD = NOCD;
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435 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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437 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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438 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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440 if (track_number > Pico_mcd->TOC.Last_Track) track_number = Pico_mcd->TOC.Last_Track;
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441 else if (track_number < 1) track_number = 1;
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443 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->TOC.Tracks[track_number - 1].MSF.M);
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444 Pico_mcd->cdd.Seconde = INT_TO_BCDW(Pico_mcd->TOC.Tracks[track_number - 1].MSF.S);
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445 Pico_mcd->cdd.Frame = INT_TO_BCDW(Pico_mcd->TOC.Tracks[track_number - 1].MSF.F);
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446 Pico_mcd->cdd.Ext = track_number % 10;
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448 if (track_number == 1) Pico_mcd->cdd.Frame |= 0x0800; // data track
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450 Pico_mcd->scd.CDD_Complete = 1;
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455 int Play_CDD_c3(void)
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458 int delay, new_lba;
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463 // MSF of the track to play in TC buffer
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465 MSF.M = (Pico_mcd->s68k_regs[0x38+10+2] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+3] & 0xF);
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466 MSF.S = (Pico_mcd->s68k_regs[0x38+10+4] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+5] & 0xF);
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467 MSF.F = (Pico_mcd->s68k_regs[0x38+10+6] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+7] & 0xF);
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469 Pico_mcd->scd.Cur_Track = MSF_to_Track(&MSF);
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471 new_lba = MSF_to_LBA(&MSF);
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472 delay = new_lba - Pico_mcd->scd.Cur_LBA;
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473 if (delay < 0) delay = -delay;
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476 Pico_mcd->scd.Cur_LBA = new_lba;
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477 CDC_Update_Header();
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479 cdprintf("Read : Cur LBA = %d, M=%d, S=%d, F=%d", Pico_mcd->scd.Cur_LBA, MSF.M, MSF.S, MSF.F);
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481 if (Pico_mcd->scd.Status_CDD != PLAYING) delay += 20;
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483 Pico_mcd->scd.Status_CDD = PLAYING;
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484 Pico_mcd->cdd.Status = 0x0102;
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485 // Pico_mcd->cdd.Status = COMM_OK;
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487 if (Pico_mcd->scd.File_Add_Delay == 0) Pico_mcd->scd.File_Add_Delay = delay;
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489 if (Pico_mcd->scd.Cur_Track == 1)
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491 Pico_mcd->s68k_regs[0x36] |= 0x01; // DATA
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495 Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO
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496 //CD_Audio_Starting = 1;
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497 FILE_Play_CD_LBA();
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500 if (Pico_mcd->scd.Cur_Track == 100) Pico_mcd->cdd.Minute = 0x0A02;
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501 else Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
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502 Pico_mcd->cdd.Seconde = 0;
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503 Pico_mcd->cdd.Frame = 0;
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504 Pico_mcd->cdd.Ext = 0;
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506 Pico_mcd->scd.Status_CDC |= 1; // Read data with CDC
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508 Pico_mcd->scd.CDD_Complete = 1;
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513 int Seek_CDD_c4(void)
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520 // MSF to seek in TC buffer
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522 MSF.M = (Pico_mcd->s68k_regs[0x38+10+2] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+3] & 0xF);
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523 MSF.S = (Pico_mcd->s68k_regs[0x38+10+4] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+5] & 0xF);
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524 MSF.F = (Pico_mcd->s68k_regs[0x38+10+6] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+7] & 0xF);
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526 Pico_mcd->scd.Cur_Track = MSF_to_Track(&MSF);
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527 Pico_mcd->scd.Cur_LBA = MSF_to_LBA(&MSF);
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528 CDC_Update_Header();
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530 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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532 Pico_mcd->scd.Status_CDD = READY;
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533 Pico_mcd->cdd.Status = 0x0200;
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536 if (Pico_mcd->scd.Cur_Track == 1)
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537 Pico_mcd->s68k_regs[0x36] |= 0x01;
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538 else Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO
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540 Pico_mcd->cdd.Minute = 0;
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541 Pico_mcd->cdd.Seconde = 0;
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542 Pico_mcd->cdd.Frame = 0;
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543 Pico_mcd->cdd.Ext = 0;
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545 Pico_mcd->scd.CDD_Complete = 1;
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551 int Pause_CDD_c6(void)
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556 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read to start a new one if raw data
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558 Pico_mcd->scd.Status_CDD = READY;
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559 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD;
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561 Pico_mcd->s68k_regs[0x36] |= 0x01; // Data bit set because stopped
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563 Pico_mcd->cdd.Minute = 0;
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564 Pico_mcd->cdd.Seconde = 0;
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565 Pico_mcd->cdd.Frame = 0;
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566 Pico_mcd->cdd.Ext = 0;
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568 Pico_mcd->scd.CDD_Complete = 1;
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574 int Resume_CDD_c7(void)
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579 Pico_mcd->scd.Cur_Track = LBA_to_Track(Pico_mcd->scd.Cur_LBA);
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584 LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);
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585 cdprintf("Resume read : Cur LBA = %d, M=%d, S=%d, F=%d", Pico_mcd->scd.Cur_LBA, MSF.M, MSF.S, MSF.F);
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589 Pico_mcd->scd.Status_CDD = PLAYING;
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590 Pico_mcd->cdd.Status = 0x0102;
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592 if (Pico_mcd->scd.Cur_Track == 1)
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594 Pico_mcd->s68k_regs[0x36] |= 0x01; // DATA
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598 Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO
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599 //CD_Audio_Starting = 1;
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600 FILE_Play_CD_LBA();
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603 if (Pico_mcd->scd.Cur_Track == 100) Pico_mcd->cdd.Minute = 0x0A02;
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604 else Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
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605 Pico_mcd->cdd.Seconde = 0;
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606 Pico_mcd->cdd.Frame = 0;
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607 Pico_mcd->cdd.Ext = 0;
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609 Pico_mcd->scd.Status_CDC |= 1; // Read data with CDC
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611 Pico_mcd->scd.CDD_Complete = 1;
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616 int Fast_Foward_CDD_c8(void)
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621 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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623 Pico_mcd->scd.Status_CDD = FAST_FOW;
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624 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD | 2;
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626 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
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627 Pico_mcd->cdd.Seconde = 0;
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628 Pico_mcd->cdd.Frame = 0;
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629 Pico_mcd->cdd.Ext = 0;
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631 Pico_mcd->scd.CDD_Complete = 1;
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637 int Fast_Rewind_CDD_c9(void)
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642 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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644 Pico_mcd->scd.Status_CDD = FAST_REV;
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645 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD | 2;
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647 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
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648 Pico_mcd->cdd.Seconde = 0;
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649 Pico_mcd->cdd.Frame = 0;
\r
650 Pico_mcd->cdd.Ext = 0;
\r
652 Pico_mcd->scd.CDD_Complete = 1;
\r
658 int Close_Tray_CDD_cC(void)
\r
661 //Clear_Sound_Buffer();
\r
663 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
\r
665 printf("tray close\n");
\r
667 if (PicoMCDcloseTray != NULL)
\r
668 CD_Present = PicoMCDcloseTray();
\r
670 Pico_mcd->scd.Status_CDD = CD_Present ? STOPPED : NOCD;
\r
671 Pico_mcd->cdd.Status = 0x0000;
\r
673 Pico_mcd->cdd.Minute = 0;
\r
674 Pico_mcd->cdd.Seconde = 0;
\r
675 Pico_mcd->cdd.Frame = 0;
\r
676 Pico_mcd->cdd.Ext = 0;
\r
678 Pico_mcd->scd.CDD_Complete = 1;
\r
684 int Open_Tray_CDD_cD(void)
\r
688 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
\r
690 printf("tray open\n");
\r
695 if (PicoMCDopenTray != NULL)
\r
698 Pico_mcd->scd.Status_CDD = TRAY_OPEN;
\r
699 Pico_mcd->cdd.Status = 0x0E00;
\r
701 Pico_mcd->cdd.Minute = 0;
\r
702 Pico_mcd->cdd.Seconde = 0;
\r
703 Pico_mcd->cdd.Frame = 0;
\r
704 Pico_mcd->cdd.Ext = 0;
\r
706 Pico_mcd->scd.CDD_Complete = 1;
\r
717 Pico_mcd->scd.Status_CDC &= ~1;
\r
719 Pico_mcd->scd.Status_CDD = READY;
\r
720 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD;
\r
722 Pico_mcd->cdd.Minute = 0;
\r
723 Pico_mcd->cdd.Seconde = INT_TO_BCDW(1);
\r
724 Pico_mcd->cdd.Frame = INT_TO_BCDW(1);
\r
725 Pico_mcd->cdd.Ext = 0;
\r
727 Pico_mcd->scd.CDD_Complete = 1;
\r
735 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD;
\r
737 Pico_mcd->cdd.Minute = 0;
\r
738 Pico_mcd->cdd.Seconde = 0;
\r
739 Pico_mcd->cdd.Frame = 0;
\r
740 Pico_mcd->cdd.Ext = 0;
\r