1 /***********************************************************
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3 * This source file 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 "../pico_int.h"
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14 #include "cd_file.h"
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18 #define TRAY_OPEN 0x0500 // TRAY OPEN CDD status
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19 #define NOCD 0x0000 // CD removed CDD status
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20 #define STOPPED 0x0900 // STOPPED CDD status (happen after stop or close tray command)
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21 #define READY 0x0400 // READY CDD status (also used for seeking)
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22 #define FAST_FOW 0x0300 // FAST FORWARD track CDD status
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23 #define FAST_REV 0x10300 // FAST REVERSE track CDD status
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24 #define PLAYING 0x0100 // PLAYING audio track CDD status
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27 //#define cdprintf(x, ...) elprintf(EL_STATUS, x, ##__VA_ARGS__)
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29 #define CDC_Update_Header()
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31 static int CD_Present = 0;
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34 #define CHECK_TRAY_OPEN \
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35 if (Pico_mcd->scd.Status_CDD == TRAY_OPEN) \
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37 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD; \
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39 Pico_mcd->cdd.Minute = 0; \
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40 Pico_mcd->cdd.Seconde = 0; \
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41 Pico_mcd->cdd.Frame = 0; \
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42 Pico_mcd->cdd.Ext = 0; \
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44 Pico_mcd->scd.CDD_Complete = 1; \
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50 #define CHECK_CD_PRESENT \
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53 Pico_mcd->scd.Status_CDD = NOCD; \
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54 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD; \
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56 Pico_mcd->cdd.Minute = 0; \
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57 Pico_mcd->cdd.Seconde = 0; \
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58 Pico_mcd->cdd.Frame = 0; \
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59 Pico_mcd->cdd.Ext = 0; \
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61 Pico_mcd->scd.CDD_Complete = 1; \
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67 static int MSF_to_LBA(_msf *MSF)
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69 return (MSF->M * 60 * 75) + (MSF->S * 75) + MSF->F - 150;
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73 PICO_INTERNAL void LBA_to_MSF(int lba, _msf *MSF)
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75 if (lba < -150) lba = 0;
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77 MSF->M = lba / (60 * 75);
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78 MSF->S = (lba / 75) % 60;
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83 static unsigned int MSF_to_Track(_msf *MSF)
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87 Start = (MSF->M << 16) + (MSF->S << 8) + MSF->F;
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89 for(i = 1; i <= (Pico_mcd->TOC.Last_Track + 1); i++)
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91 Cur = Pico_mcd->TOC.Tracks[i - 1].MSF.M << 16;
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92 Cur += Pico_mcd->TOC.Tracks[i - 1].MSF.S << 8;
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93 Cur += Pico_mcd->TOC.Tracks[i - 1].MSF.F;
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95 if (Cur > Start) break;
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100 if (i > Pico_mcd->TOC.Last_Track) return 100;
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101 else if (i < 1) i = 1;
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103 return (unsigned) i;
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107 static unsigned int LBA_to_Track(int lba)
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111 LBA_to_MSF(lba, &MSF);
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112 return MSF_to_Track(&MSF);
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116 static void Track_to_MSF(int track, _msf *MSF)
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118 if (track < 1) track = 1;
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119 else if (track > Pico_mcd->TOC.Last_Track) track = Pico_mcd->TOC.Last_Track;
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121 MSF->M = Pico_mcd->TOC.Tracks[track - 1].MSF.M;
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122 MSF->S = Pico_mcd->TOC.Tracks[track - 1].MSF.S;
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123 MSF->F = Pico_mcd->TOC.Tracks[track - 1].MSF.F;
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127 PICO_INTERNAL int Track_to_LBA(int track)
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131 Track_to_MSF(track, &MSF);
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132 return MSF_to_LBA(&MSF);
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136 PICO_INTERNAL void Check_CD_Command(void)
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138 cdprintf("CHECK CD COMMAND");
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141 if (Pico_mcd->scd.Status_CDC & 1) // CDC is reading data ...
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143 cdprintf("Got a read command");
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146 if (Pico_mcd->scd.Cur_Track == 1) {
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147 Pico_mcd->s68k_regs[0x36] |= 0x01;
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149 if (Pico_mcd->scd.File_Add_Delay == 0)
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151 unsigned char header[4];
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154 LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);
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156 header[0] = INT_TO_BCDB(MSF.M);
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157 header[1] = INT_TO_BCDB(MSF.S);
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158 header[2] = INT_TO_BCDB(MSF.F);
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161 //FILE_Read_One_LBA_CDC();
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162 Pico_mcd->scd.Cur_LBA +=
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163 cdc_decoder_update(header);
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165 else Pico_mcd->scd.File_Add_Delay--;
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168 Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO
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169 unsigned char header[4] = { 0, };
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170 cdc_decoder_update(header);
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175 if (Pico_mcd->scd.CDD_Complete)
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177 Pico_mcd->scd.CDD_Complete = 0;
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179 CDD_Export_Status();
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182 if (Pico_mcd->scd.Status_CDD == FAST_FOW)
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184 Pico_mcd->scd.Cur_LBA += 10;
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185 CDC_Update_Header();
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188 else if (Pico_mcd->scd.Status_CDD == FAST_REV)
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190 Pico_mcd->scd.Cur_LBA -= 10;
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191 if (Pico_mcd->scd.Cur_LBA < -150) Pico_mcd->scd.Cur_LBA = -150;
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192 CDC_Update_Header();
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197 PICO_INTERNAL int Init_CD_Driver(void)
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203 PICO_INTERNAL void End_CD_Driver(void)
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209 PICO_INTERNAL void Reset_CD(void)
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211 Pico_mcd->scd.Cur_Track = 0;
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212 Pico_mcd->scd.Cur_LBA = -150;
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213 Pico_mcd->scd.Status_CDC &= ~1;
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214 if (Pico_mcd->scd.Status_CDD != TRAY_OPEN)
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215 Pico_mcd->scd.Status_CDD = CD_Present ? READY : NOCD;
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216 Pico_mcd->scd.CDD_Complete = 0;
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217 Pico_mcd->scd.File_Add_Delay = 0;
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221 int Insert_CD(const char *cdimg_name, int type)
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227 if (cdimg_name != NULL && type != CIT_NOT_CD)
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229 ret = Load_CD_Image(cdimg_name, type);
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233 if (Pico_mcd->scd.Status_CDD == TRAY_OPEN)
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235 if (Pico_mcd->bios[0x122 ^ 1] == '2')
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236 Close_Tray_CDD_cC();
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237 // else bios will issue it
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241 Pico_mcd->scd.Status_CDD = READY;
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246 if (Pico_mcd->scd.Status_CDD != TRAY_OPEN && !CD_Present)
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247 Pico_mcd->scd.Status_CDD = NOCD;
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255 int ret = CD_Present;
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265 PICO_INTERNAL void Change_CD(void)
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267 if (Pico_mcd->scd.Status_CDD == TRAY_OPEN) Close_Tray_CDD_cC();
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268 else Open_Tray_CDD_cD();
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272 PICO_INTERNAL int Get_Status_CDD_c0(void)
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274 cdprintf("Status command : Cur LBA = %d", Pico_mcd->scd.Cur_LBA);
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276 // Clear immediat status
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277 if ((Pico_mcd->cdd.Status & 0x0F00) == 0x0200)
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278 Pico_mcd->cdd.Status = (Pico_mcd->scd.Status_CDD & 0xFF00) | (Pico_mcd->cdd.Status & 0x00FF);
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279 else if ((Pico_mcd->cdd.Status & 0x0F00) == 0x0700)
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280 Pico_mcd->cdd.Status = (Pico_mcd->scd.Status_CDD & 0xFF00) | (Pico_mcd->cdd.Status & 0x00FF);
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281 else if ((Pico_mcd->cdd.Status & 0x0F00) == 0x0E00)
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282 Pico_mcd->cdd.Status = (Pico_mcd->scd.Status_CDD & 0xFF00) | (Pico_mcd->cdd.Status & 0x00FF);
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284 Pico_mcd->scd.CDD_Complete = 1;
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290 PICO_INTERNAL int Stop_CDD_c1(void)
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294 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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296 if (CD_Present) Pico_mcd->scd.Status_CDD = STOPPED;
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297 else Pico_mcd->scd.Status_CDD = NOCD;
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298 Pico_mcd->cdd.Status = 0x0000;
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300 Pico_mcd->s68k_regs[0x36] |= 0x01; // Data bit set because stopped
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302 Pico_mcd->cdd.Minute = 0;
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303 Pico_mcd->cdd.Seconde = 0;
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304 Pico_mcd->cdd.Frame = 0;
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305 Pico_mcd->cdd.Ext = 0;
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307 Pico_mcd->scd.CDD_Complete = 1;
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313 PICO_INTERNAL int Get_Pos_CDD_c20(void)
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317 cdprintf("command 200 : Cur LBA = %d", Pico_mcd->scd.Cur_LBA);
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321 Pico_mcd->cdd.Status &= 0xFF;
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324 Pico_mcd->scd.Status_CDD = NOCD;
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325 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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327 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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328 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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330 cdprintf("Status CDD = %.4X Status = %.4X", Pico_mcd->scd.Status_CDD, Pico_mcd->cdd.Status);
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332 LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);
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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 PICO_INTERNAL int Get_Track_Pos_CDD_c21(void)
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350 cdprintf("command 201 : Cur LBA = %d", Pico_mcd->scd.Cur_LBA);
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354 Pico_mcd->cdd.Status &= 0xFF;
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357 Pico_mcd->scd.Status_CDD = NOCD;
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358 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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360 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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361 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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363 elapsed_time = Pico_mcd->scd.Cur_LBA - Track_to_LBA(LBA_to_Track(Pico_mcd->scd.Cur_LBA));
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364 LBA_to_MSF(elapsed_time - 150, &MSF);
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366 cdprintf(" elapsed = %d", elapsed_time);
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368 Pico_mcd->cdd.Minute = INT_TO_BCDW(MSF.M);
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369 Pico_mcd->cdd.Seconde = INT_TO_BCDW(MSF.S);
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370 Pico_mcd->cdd.Frame = INT_TO_BCDW(MSF.F);
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371 Pico_mcd->cdd.Ext = 0;
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373 Pico_mcd->scd.CDD_Complete = 1;
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379 PICO_INTERNAL int Get_Current_Track_CDD_c22(void)
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381 cdprintf("Status CDD = %.4X Status = %.4X", Pico_mcd->scd.Status_CDD, Pico_mcd->cdd.Status);
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385 Pico_mcd->cdd.Status &= 0xFF;
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388 Pico_mcd->scd.Status_CDD = NOCD;
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389 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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391 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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392 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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394 Pico_mcd->scd.Cur_Track = LBA_to_Track(Pico_mcd->scd.Cur_LBA);
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396 if (Pico_mcd->scd.Cur_Track == 100) Pico_mcd->cdd.Minute = 0x0A02;
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397 else Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
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398 Pico_mcd->cdd.Seconde = 0;
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399 Pico_mcd->cdd.Frame = 0;
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400 Pico_mcd->cdd.Ext = 0;
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402 Pico_mcd->scd.CDD_Complete = 1;
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408 PICO_INTERNAL int Get_Total_Lenght_CDD_c23(void)
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412 Pico_mcd->cdd.Status &= 0xFF;
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415 Pico_mcd->scd.Status_CDD = NOCD;
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416 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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418 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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419 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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421 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->TOC.Tracks[Pico_mcd->TOC.Last_Track].MSF.M);
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422 Pico_mcd->cdd.Seconde = INT_TO_BCDW(Pico_mcd->TOC.Tracks[Pico_mcd->TOC.Last_Track].MSF.S);
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423 Pico_mcd->cdd.Frame = INT_TO_BCDW(Pico_mcd->TOC.Tracks[Pico_mcd->TOC.Last_Track].MSF.F);
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424 Pico_mcd->cdd.Ext = 0;
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426 Pico_mcd->scd.CDD_Complete = 1;
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432 PICO_INTERNAL int Get_First_Last_Track_CDD_c24(void)
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436 Pico_mcd->cdd.Status &= 0xFF;
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439 Pico_mcd->scd.Status_CDD = NOCD;
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441 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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442 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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444 Pico_mcd->cdd.Minute = INT_TO_BCDW(1);
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445 Pico_mcd->cdd.Seconde = INT_TO_BCDW(Pico_mcd->TOC.Last_Track);
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446 Pico_mcd->cdd.Frame = 0;
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447 Pico_mcd->cdd.Ext = 0;
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449 Pico_mcd->scd.CDD_Complete = 1;
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455 PICO_INTERNAL int Get_Track_Adr_CDD_c25(void)
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461 // track number in TC4 & TC5
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463 track_number = (Pico_mcd->s68k_regs[0x38+10+4] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+5] & 0xF);
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465 Pico_mcd->cdd.Status &= 0xFF;
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468 Pico_mcd->scd.Status_CDD = NOCD;
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469 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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471 // else if (!(CDC.CTRL.B.B0 & 0x80)) Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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472 Pico_mcd->cdd.Status |= Pico_mcd->scd.Status_CDD;
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474 if (track_number > Pico_mcd->TOC.Last_Track) track_number = Pico_mcd->TOC.Last_Track;
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475 else if (track_number < 1) track_number = 1;
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477 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->TOC.Tracks[track_number - 1].MSF.M);
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478 Pico_mcd->cdd.Seconde = INT_TO_BCDW(Pico_mcd->TOC.Tracks[track_number - 1].MSF.S);
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479 Pico_mcd->cdd.Frame = INT_TO_BCDW(Pico_mcd->TOC.Tracks[track_number - 1].MSF.F);
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480 Pico_mcd->cdd.Ext = track_number % 10;
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482 if (track_number == 1) Pico_mcd->cdd.Frame |= 0x0800; // data track
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484 Pico_mcd->scd.CDD_Complete = 1;
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489 PICO_INTERNAL int Play_CDD_c3(void)
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492 int delay, new_lba;
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497 // MSF of the track to play in TC buffer
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499 MSF.M = (Pico_mcd->s68k_regs[0x38+10+2] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+3] & 0xF);
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500 MSF.S = (Pico_mcd->s68k_regs[0x38+10+4] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+5] & 0xF);
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501 MSF.F = (Pico_mcd->s68k_regs[0x38+10+6] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+7] & 0xF);
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503 Pico_mcd->scd.Cur_Track = MSF_to_Track(&MSF);
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505 new_lba = MSF_to_LBA(&MSF);
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506 delay = new_lba - Pico_mcd->scd.Cur_LBA;
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507 if (delay < 0) delay = -delay;
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510 if (Pico_mcd->scd.Cur_LBA > 0 && delay < 13)
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511 // based on genplus GX
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514 Pico_mcd->scd.Cur_LBA = new_lba;
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515 CDC_Update_Header();
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517 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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519 if (Pico_mcd->scd.Status_CDD != PLAYING) delay += 20;
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521 Pico_mcd->scd.Status_CDD = PLAYING;
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522 Pico_mcd->cdd.Status = 0x0102;
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523 // Pico_mcd->cdd.Status = COMM_OK;
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525 if (Pico_mcd->scd.File_Add_Delay == 0) Pico_mcd->scd.File_Add_Delay = delay;
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527 if (Pico_mcd->scd.Cur_Track == 1)
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529 Pico_mcd->s68k_regs[0x36] |= 0x01; // DATA
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533 Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO
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537 if (Pico_mcd->scd.Cur_Track == 100) Pico_mcd->cdd.Minute = 0x0A02;
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538 else Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
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539 Pico_mcd->cdd.Seconde = 0;
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540 Pico_mcd->cdd.Frame = 0;
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541 Pico_mcd->cdd.Ext = 0;
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543 Pico_mcd->scd.Status_CDC |= 1; // Read data with CDC
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545 Pico_mcd->scd.CDD_Complete = 1;
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550 PICO_INTERNAL int Seek_CDD_c4(void)
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557 // MSF to seek in TC buffer
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559 MSF.M = (Pico_mcd->s68k_regs[0x38+10+2] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+3] & 0xF);
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560 MSF.S = (Pico_mcd->s68k_regs[0x38+10+4] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+5] & 0xF);
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561 MSF.F = (Pico_mcd->s68k_regs[0x38+10+6] & 0xF) * 10 + (Pico_mcd->s68k_regs[0x38+10+7] & 0xF);
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563 Pico_mcd->scd.Cur_Track = MSF_to_Track(&MSF);
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564 Pico_mcd->scd.Cur_LBA = MSF_to_LBA(&MSF);
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565 CDC_Update_Header();
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567 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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569 Pico_mcd->scd.Status_CDD = READY;
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570 Pico_mcd->cdd.Status = 0x0200;
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573 if (Pico_mcd->scd.Cur_Track == 1)
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574 Pico_mcd->s68k_regs[0x36] |= 0x01;
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575 else Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO
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577 Pico_mcd->cdd.Minute = 0;
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578 Pico_mcd->cdd.Seconde = 0;
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579 Pico_mcd->cdd.Frame = 0;
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580 Pico_mcd->cdd.Ext = 0;
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582 Pico_mcd->scd.CDD_Complete = 1;
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588 PICO_INTERNAL int Pause_CDD_c6(void)
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593 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read to start a new one if raw data
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595 Pico_mcd->scd.Status_CDD = READY;
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596 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD;
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598 Pico_mcd->s68k_regs[0x36] |= 0x01; // Data bit set because stopped
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600 Pico_mcd->cdd.Minute = 0;
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601 Pico_mcd->cdd.Seconde = 0;
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602 Pico_mcd->cdd.Frame = 0;
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603 Pico_mcd->cdd.Ext = 0;
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605 Pico_mcd->scd.CDD_Complete = 1;
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611 PICO_INTERNAL int Resume_CDD_c7(void)
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616 Pico_mcd->scd.Cur_Track = LBA_to_Track(Pico_mcd->scd.Cur_LBA);
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621 LBA_to_MSF(Pico_mcd->scd.Cur_LBA, &MSF);
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622 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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626 Pico_mcd->scd.Status_CDD = PLAYING;
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627 Pico_mcd->cdd.Status = 0x0102;
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629 if (Pico_mcd->scd.Cur_Track == 1)
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631 Pico_mcd->s68k_regs[0x36] |= 0x01; // DATA
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635 Pico_mcd->s68k_regs[0x36] &= ~0x01; // AUDIO
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639 if (Pico_mcd->scd.Cur_Track == 100) Pico_mcd->cdd.Minute = 0x0A02;
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640 else Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
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641 Pico_mcd->cdd.Seconde = 0;
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642 Pico_mcd->cdd.Frame = 0;
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643 Pico_mcd->cdd.Ext = 0;
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645 Pico_mcd->scd.Status_CDC |= 1; // Read data with CDC
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647 Pico_mcd->scd.CDD_Complete = 1;
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652 PICO_INTERNAL int Fast_Foward_CDD_c8(void)
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657 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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659 Pico_mcd->scd.Status_CDD = FAST_FOW;
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660 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD | 2;
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662 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
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663 Pico_mcd->cdd.Seconde = 0;
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664 Pico_mcd->cdd.Frame = 0;
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665 Pico_mcd->cdd.Ext = 0;
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667 Pico_mcd->scd.CDD_Complete = 1;
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673 PICO_INTERNAL int Fast_Rewind_CDD_c9(void)
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678 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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680 Pico_mcd->scd.Status_CDD = FAST_REV;
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681 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD | 2;
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683 Pico_mcd->cdd.Minute = INT_TO_BCDW(Pico_mcd->scd.Cur_Track);
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684 Pico_mcd->cdd.Seconde = 0;
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685 Pico_mcd->cdd.Frame = 0;
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686 Pico_mcd->cdd.Ext = 0;
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688 Pico_mcd->scd.CDD_Complete = 1;
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694 PICO_INTERNAL int Close_Tray_CDD_cC(void)
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696 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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698 elprintf(EL_STATUS, "tray close\n");
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700 if (PicoMCDcloseTray != NULL)
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701 PicoMCDcloseTray();
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703 Pico_mcd->scd.Status_CDD = CD_Present ? STOPPED : NOCD;
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704 Pico_mcd->cdd.Status = 0x0000;
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706 Pico_mcd->cdd.Minute = 0;
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707 Pico_mcd->cdd.Seconde = 0;
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708 Pico_mcd->cdd.Frame = 0;
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709 Pico_mcd->cdd.Ext = 0;
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711 Pico_mcd->scd.CDD_Complete = 1;
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717 PICO_INTERNAL int Open_Tray_CDD_cD(void)
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721 Pico_mcd->scd.Status_CDC &= ~1; // Stop CDC read
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723 elprintf(EL_STATUS, "tray open\n");
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728 if (PicoMCDopenTray != NULL)
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731 Pico_mcd->scd.Status_CDD = TRAY_OPEN;
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732 Pico_mcd->cdd.Status = 0x0E00;
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734 Pico_mcd->cdd.Minute = 0;
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735 Pico_mcd->cdd.Seconde = 0;
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736 Pico_mcd->cdd.Frame = 0;
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737 Pico_mcd->cdd.Ext = 0;
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739 Pico_mcd->scd.CDD_Complete = 1;
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745 PICO_INTERNAL int CDD_cA(void)
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750 Pico_mcd->scd.Status_CDC &= ~1;
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752 Pico_mcd->scd.Status_CDD = READY;
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753 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD;
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755 Pico_mcd->cdd.Minute = 0;
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756 Pico_mcd->cdd.Seconde = INT_TO_BCDW(1);
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757 Pico_mcd->cdd.Frame = INT_TO_BCDW(1);
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758 Pico_mcd->cdd.Ext = 0;
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760 Pico_mcd->scd.CDD_Complete = 1;
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766 PICO_INTERNAL int CDD_Def(void)
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768 Pico_mcd->cdd.Status = Pico_mcd->scd.Status_CDD;
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770 Pico_mcd->cdd.Minute = 0;
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771 Pico_mcd->cdd.Seconde = 0;
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772 Pico_mcd->cdd.Frame = 0;
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773 Pico_mcd->cdd.Ext = 0;
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779 static int bswapwrite(int a, unsigned short d)
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781 *(unsigned short *)(Pico_mcd->s68k_regs + a) = (d>>8)|(d<<8);
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782 return d + (d >> 8);
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785 PICO_INTERNAL void CDD_Export_Status(void)
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789 csum = bswapwrite( 0x38+0, Pico_mcd->cdd.Status);
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790 csum += bswapwrite( 0x38+2, Pico_mcd->cdd.Minute);
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791 csum += bswapwrite( 0x38+4, Pico_mcd->cdd.Seconde);
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792 csum += bswapwrite( 0x38+6, Pico_mcd->cdd.Frame);
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793 Pico_mcd->s68k_regs[0x38+8] = Pico_mcd->cdd.Ext;
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794 csum += Pico_mcd->cdd.Ext;
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795 Pico_mcd->s68k_regs[0x38+9] = ~csum & 0xf;
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797 Pico_mcd->s68k_regs[0x37] &= 3; // CDD.Control
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799 if (Pico_mcd->s68k_regs[0x33] & PCDS_IEN4)
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801 elprintf(EL_INTS, "cdd export irq 4");
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802 SekInterruptS68k(4);
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805 // cdprintf("CDD exported status\n");
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806 cdprintf("out: Status=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X Checksum=%.4X",
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807 (Pico_mcd->s68k_regs[0x38+0] << 8) | Pico_mcd->s68k_regs[0x38+1],
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808 (Pico_mcd->s68k_regs[0x38+2] << 8) | Pico_mcd->s68k_regs[0x38+3],
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809 (Pico_mcd->s68k_regs[0x38+4] << 8) | Pico_mcd->s68k_regs[0x38+5],
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810 (Pico_mcd->s68k_regs[0x38+6] << 8) | Pico_mcd->s68k_regs[0x38+7],
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811 (Pico_mcd->s68k_regs[0x38+8] << 8) | Pico_mcd->s68k_regs[0x38+9]);
\r
815 PICO_INTERNAL void CDD_Import_Command(void)
\r
817 // cdprintf("CDD importing command\n");
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818 cdprintf("in: Command=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X Checksum=%.4X",
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819 (Pico_mcd->s68k_regs[0x38+10+0] << 8) | Pico_mcd->s68k_regs[0x38+10+1],
\r
820 (Pico_mcd->s68k_regs[0x38+10+2] << 8) | Pico_mcd->s68k_regs[0x38+10+3],
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821 (Pico_mcd->s68k_regs[0x38+10+4] << 8) | Pico_mcd->s68k_regs[0x38+10+5],
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822 (Pico_mcd->s68k_regs[0x38+10+6] << 8) | Pico_mcd->s68k_regs[0x38+10+7],
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823 (Pico_mcd->s68k_regs[0x38+10+8] << 8) | Pico_mcd->s68k_regs[0x38+10+9]);
\r
825 switch (Pico_mcd->s68k_regs[0x38+10+0])
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827 case 0x0: // STATUS (?)
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828 Get_Status_CDD_c0();
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831 case 0x1: // STOP ALL (?)
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835 case 0x2: // GET TOC INFORMATIONS
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836 switch(Pico_mcd->s68k_regs[0x38+10+3])
\r
838 case 0x0: // get current position (MSF format)
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839 Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00);
\r
843 case 0x1: // get elapsed time of current track played/scanned (relative MSF format)
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844 Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 1;
\r
845 Get_Track_Pos_CDD_c21();
\r
848 case 0x2: // get current track in RS2-RS3
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849 Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 2;
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850 Get_Current_Track_CDD_c22();
\r
853 case 0x3: // get total length (MSF format)
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854 Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 3;
\r
855 Get_Total_Lenght_CDD_c23();
\r
858 case 0x4: // first & last track number
\r
859 Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 4;
\r
860 Get_First_Last_Track_CDD_c24();
\r
863 case 0x5: // get track addresse (MSF format)
\r
864 Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 5;
\r
865 Get_Track_Adr_CDD_c25();
\r
868 default : // invalid, then we return status
\r
869 Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 0xF;
\r
870 Get_Status_CDD_c0();
\r
883 case 0x6: // PAUSE/STOP
\r
887 case 0x7: // RESUME
\r
891 case 0x8: // FAST FOWARD
\r
892 Fast_Foward_CDD_c8();
\r
895 case 0x9: // FAST REWIND
\r
896 Fast_Rewind_CDD_c9();
\r
899 case 0xA: // RECOVER INITIAL STATE (?)
\r
903 case 0xC: // CLOSE TRAY
\r
904 Close_Tray_CDD_cC();
\r
907 case 0xD: // OPEN TRAY
\r
908 Open_Tray_CDD_cD();
\r
911 default: // UNKNOWN
\r
917 void CDD_Reset(void)
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921 memset(Pico_mcd->s68k_regs+0x34, 0, 2*2); // CDD.Fader, CDD.Control
\r
922 Pico_mcd->cdd.Status = 0;
\r
923 Pico_mcd->cdd.Minute = 0;
\r
924 Pico_mcd->cdd.Seconde = 0;
\r
925 Pico_mcd->cdd.Frame = 0;
\r
926 Pico_mcd->cdd.Ext = 0;
\r
928 // clear receive status and transfer command
\r
929 memset(Pico_mcd->s68k_regs+0x38, 0, 20);
\r
930 Pico_mcd->s68k_regs[0x38+9] = 0xF; // Default checksum
\r