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annotate cdd_mcu.c @ 2208:3809a0bd680e

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Fix a couple of Z80 debugger issues
author Michael Pavone <pavone@retrodev.com>
date Sat, 27 Aug 2022 22:02:09 -0700
parents c3ee42c89b27
children a8af8d898a7c
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2061
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1 #include "cdd_mcu.h"
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2 #include "backend.h"
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3
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4 #define SCD_MCLKS 50000000
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5 #define CD_BLOCK_CLKS 16934400
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6 #define CDD_MCU_DIVIDER 8
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7 #define SECTORS_PER_SECOND 75
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8 #define SECTOR_CLOCKS (CD_BLOCK_CLKS/SECTORS_PER_SECOND)
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9 #define NIBBLE_CLOCKS (CDD_MCU_DIVIDER * 77)
2062
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10 #define BYTE_CLOCKS (SECTOR_CLOCKS/2352) // 96
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11 #define SUBCODE_CLOCKS (SECTOR_CLOCKS/98)
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12 #define PROCESSING_DELAY 54000 //approximate, based on Wondermega M1 measurements
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13
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14 //lead in start max diameter 46 mm
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15 //program area start max diameter 50 mm
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16 //difference 4 mm = 4000 um
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17 //radius difference 2 mm = 2000 um
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18 //track pitch 1.6 um
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19 //1250 physical tracks in between
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20 //linear speed 1.2 m/s - 1.4 m/s
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21 // 1.3 m = 1300 mm
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22 // circumference at 46 mm ~ 144.51 mm
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23 // circumference at 50 mm ~ 157.08 mm
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24 // avg is 150.795
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25 // 75 sectors per second
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26 // 17.3333 mm "typical" length of a sector
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27 // ~8.7 sectors per track in lead-in area
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28 #define LEADIN_SECTORS 10875
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29
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30 static uint32_t cd_block_to_mclks(uint32_t cycles)
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31 {
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32 return ((uint64_t)cycles) * ((uint64_t)SCD_MCLKS) / ((uint64_t)CD_BLOCK_CLKS);
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33 }
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34
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35 static uint32_t mclks_to_cd_block(uint32_t cycles)
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36 {
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37 return ((uint64_t)cycles) * ((uint64_t)CD_BLOCK_CLKS) / ((uint64_t)SCD_MCLKS);
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38 }
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39
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40 void cdd_mcu_init(cdd_mcu *context, system_media *media)
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41 {
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42 context->next_int_cycle = CYCLE_NEVER;
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43 context->next_subcode_int_cycle = CYCLE_NEVER;
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44 context->last_sector_cycle = CYCLE_NEVER;
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45 context->last_nibble_cycle = CYCLE_NEVER;
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46 context->next_byte_cycle = 0;
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47 context->next_subcode_cycle = CYCLE_NEVER;
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48 context->requested_format = SF_NOTREADY;
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49 context->media = media;
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50 context->current_status_nibble = -1;
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51 context->current_cmd_nibble = -1;
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52 context->current_sector_byte = -1;
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53 context->current_subcode_byte = -1;
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54 context->current_subcode_dest = 0;
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55 }
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56
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57 enum {
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58 GAO_CDD_CTRL,
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59 GAO_CDD_STATUS,
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60 GAO_CDD_CMD = GAO_CDD_STATUS+5,
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61 GAO_SUBCODE_ADDR = (0x68-0x36)/2,
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62 GAO_SUBCODE_START = (0x100-0x36)/2
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63 };
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64 //GAO_CDD_CTRL
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65 #define BIT_MUTE 0x100
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66 #define BIT_HOCK 0x0004
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67 #define BIT_DRS 0x0002
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68 #define BIT_DTS 0x0001
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69
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70 static uint8_t checksum(uint8_t *vbuffer)
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71 {
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72 uint8_t *buffer = vbuffer;
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73 uint8_t sum = 0;
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74 for (int i = 0; i < 9; i++)
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75 {
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76 sum += buffer[i];
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77 }
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78 return (~sum) & 0xF;
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79 }
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80
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81 #define MIN_CIRCUMFERENCE 144.51f
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82 #define MAX_CIRCUMFERENCE 364.42f
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83 #define SECTOR_LENGTH 17.3333f
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84 // max diameter for program area 116 mm
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85 // circumference ~ 364.42 mm
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86 // ~ 21 sectors per physical track at edge
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87 // ~8 sectors per physical track at start of lead-in
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88 #define COARSE_SEEK_TRACKS 57 //estimate based on seek test
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89 static void handle_seek(cdd_mcu *context)
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90 {
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91 uint32_t old_coarse = context->coarse_seek;
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92 if (context->seeking) {
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93 if (context->seek_pba == context->head_pba) {
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94 context->seeking = 0;
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95 context->coarse_seek = 0;
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96 if (context->status == DS_PAUSE) {
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97 context->pause_pba = context->head_pba;
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98 }
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99 } else {
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100 //TODO: better estimate of sectors per track at current head location
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101 //TODO: drive will periodically lose tracking when seeking which slows
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102 //things down from this ideal speed I'm curently estimating
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103 float circumference = (MAX_CIRCUMFERENCE-MIN_CIRCUMFERENCE) * ((float)context->head_pba) / (74 * 60 * SECTORS_PER_SECOND) + MIN_CIRCUMFERENCE;
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104 float sectors_per_track = circumference / SECTOR_LENGTH;
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105 uint32_t max_seek = sectors_per_track * COARSE_SEEK_TRACKS;
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106 uint32_t min_seek = sectors_per_track;
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107
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108 uint32_t old_pba = context->head_pba;
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109 if (context->seek_pba > context->head_pba) {
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110 uint32_t seek_amount;
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111 for (seek_amount = max_seek; seek_amount >= min_seek; seek_amount >>= 1)
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112 {
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113 if (context->seek_pba - context->head_pba >= seek_amount) {
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114 break;
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115 }
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116 }
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117 if (seek_amount >= min_seek) {
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118 context->head_pba += seek_amount;
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119 } else {
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120 context->head_pba++;
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121 }
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122 } else {
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123 uint32_t seek_amount;
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124 for (seek_amount = max_seek; seek_amount >= min_seek; seek_amount >>= 1)
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125 {
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126 if (context->head_pba - context->seek_pba >= seek_amount) {
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127 break;
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128 }
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129 }
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130 if (seek_amount >= min_seek) {
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131 context->head_pba -= seek_amount;
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132 } else if (context->head_pba >= min_seek){
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133 context->head_pba -= min_seek;
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134 } else {
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diff changeset
135 context->head_pba = 0;
793715149f16 More accurate seek emulation
Michael Pavone <pavone@retrodev.com>
parents: 2139
diff changeset
136 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
137 }
2152
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
138 if (context->head_pba != old_pba + 1) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
139 context->coarse_seek++;
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
140 } else {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
141 context->coarse_seek = 0;
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
142 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
143 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
144 }
2152
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
145 if (old_coarse && !context->coarse_seek) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
146 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
147 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
148
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
149 static void lba_to_status(cdd_mcu *context, uint32_t lba)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
150 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
151 uint32_t seconds = lba / 75;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
152 uint32_t frames = lba % 75;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
153 uint32_t minutes = seconds / 60;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
154 seconds = seconds % 60;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
155 context->status_buffer.b.time.min_high = minutes / 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
156 context->status_buffer.b.time.min_low = minutes % 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
157 context->status_buffer.b.time.sec_high = seconds / 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
158 context->status_buffer.b.time.sec_low = seconds % 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
159 context->status_buffer.b.time.frame_high = frames / 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
160 context->status_buffer.b.time.frame_low = frames % 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
161 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
162
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
163 static void update_status(cdd_mcu *context, uint16_t *gate_array)
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
164 {
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
165 gate_array[GAO_CDD_CTRL] |= BIT_MUTE;
2115
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
166 uint32_t prev_pba = context->head_pba;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
167 switch (context->status)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
168 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
169 case DS_PLAY:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
170 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
171 if (!context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
172 context->head_pba++;
2081
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
173 }
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
174 if (context->head_pba >= LEADIN_SECTORS) {
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
175 uint8_t track = context->media->seek(context->media, context->head_pba - LEADIN_SECTORS);
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
176 if (!context->seeking && context->media->tracks[track].type == TRACK_AUDIO) {
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
177 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE;
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
178 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
179 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
180 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
181 case DS_PAUSE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
182 handle_seek(context);
2095
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
183 if (!context->seeking) {
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
184 context->head_pba++;
2152
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
185 //TODO: better estimate of sectors per track at current head location
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
186 float circumference = (MAX_CIRCUMFERENCE-MIN_CIRCUMFERENCE) * ((float)context->head_pba) / (74 * 60 * SECTORS_PER_SECOND) + MIN_CIRCUMFERENCE;
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
187 float sectors_per_track = circumference / SECTOR_LENGTH;
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
188 //TODO: check the exact behavior during pause on hardware
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
189 uint32_t diff = sectors_per_track * 0.5f + 0.5f;
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
190 if (context->head_pba > context->pause_pba + diff) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
191 context->head_pba = context->pause_pba - diff;
2095
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
192 if (context->head_pba < LEADIN_SECTORS) {
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
193 context->head_pba = LEADIN_SECTORS;
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
194 }
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
195 }
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
196 }
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
197 if (context->head_pba >= LEADIN_SECTORS) {
2117
03304d350339 Set force-mute when CD drive is in the pause state
Michael Pavone <pavone@retrodev.com>
parents: 2116
diff changeset
198 context->media->seek(context->media, context->head_pba - LEADIN_SECTORS);
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
199 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
200 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
201 case DS_TOC_READ:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
202 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
203 if (!context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
204 context->head_pba++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
205 if (context->media && context->media->type == MEDIA_CDROM && context->media->num_tracks) {
2079
5a2b759f6b2d BIOS doesn't like it if TOC read happens too quickly
Michael Pavone <pavone@retrodev.com>
parents: 2078
diff changeset
206 if (context->head_pba > 3*(context->media->num_tracks + 2)) {
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
207 context->toc_valid = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
208 context->seeking = 1;
2095
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
209 context->seek_pba = LEADIN_SECTORS + context->media->tracks[0].start_lba + context->media->tracks[0].fake_pregap;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
210 context->status = DS_PAUSE;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
211 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
212
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
213 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
214 context->status = DS_NO_DISC;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
215 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
216 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
217 break;
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
218 case DS_TRACKING:
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
219 handle_seek(context);
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
220 if (!context->seeking) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
221 context->status = DS_PAUSE;
2095
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
222 context->pause_pba = context->head_pba;
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
223 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
224 if (context->head_pba >= LEADIN_SECTORS) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
225 uint8_t track = context->media->seek(context->media, context->head_pba - LEADIN_SECTORS);
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
226 if (!context->seeking && context->media->tracks[track].type == TRACK_AUDIO) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
227 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
228 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
229 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
230 break;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
231 }
2124
ad346054ca78 Return "not ready" status sometimes when seeking. Fixes issues in multiple games
Michael Pavone <pavone@retrodev.com>
parents: 2122
diff changeset
232 uint8_t force_not_ready = 0;
2152
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
233 if (context->coarse_seek && !(context->coarse_seek % 15)) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
234 //TODO: adjust seeking for focus error when these bad statuses happen
2124
ad346054ca78 Return "not ready" status sometimes when seeking. Fixes issues in multiple games
Michael Pavone <pavone@retrodev.com>
parents: 2122
diff changeset
235 //BIOS depends on getting a not ready status during seeking to clear certain state
ad346054ca78 Return "not ready" status sometimes when seeking. Fixes issues in multiple games
Michael Pavone <pavone@retrodev.com>
parents: 2122
diff changeset
236 force_not_ready = context->status_buffer.format != SF_NOTREADY;
ad346054ca78 Return "not ready" status sometimes when seeking. Fixes issues in multiple games
Michael Pavone <pavone@retrodev.com>
parents: 2122
diff changeset
237 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
238 if (context->first_cmd_received) {
2124
ad346054ca78 Return "not ready" status sometimes when seeking. Fixes issues in multiple games
Michael Pavone <pavone@retrodev.com>
parents: 2122
diff changeset
239 switch (force_not_ready ? SF_NOTREADY : context->requested_format)
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
240 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
241 case SF_ABSOLUTE:
2115
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
242 if (context->toc_valid && prev_pba >= LEADIN_SECTORS) {
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
243 lba_to_status(context, prev_pba - LEADIN_SECTORS);
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
244 context->status_buffer.format = SF_ABSOLUTE;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
245 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
246 context->status_buffer.format = SF_NOTREADY;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
247 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
248 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
249 case SF_RELATIVE:
2115
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
250 if (context->toc_valid && prev_pba >= LEADIN_SECTORS) {
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
251 uint32_t lba =prev_pba - LEADIN_SECTORS;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
252 for (uint32_t i = 0; i < context->media->num_tracks; i++)
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
253 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
254 if (lba < context->media->tracks[i].end_lba) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
255 if (context->media->tracks[i].fake_pregap) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
256 if (lba > context->media->tracks[i].fake_pregap) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
257 lba -= context->media->tracks[i].fake_pregap;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
258 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
259 //relative time counts down to 0 in pregap
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
260 lba = context->media->tracks[i].fake_pregap - lba;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
261 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
262 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
263 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
264 if (lba < context->media->tracks[i].start_lba) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
265 //relative time counts down to 0 in pregap
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
266 lba = context->media->tracks[i].start_lba - lba;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
267 } else {
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
268 lba -= context->media->tracks[i].start_lba;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
269 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
270 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
271 } else if (context->media->tracks[i].fake_pregap) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
272 lba -= context->media->tracks[i].fake_pregap;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
273 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
274 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
275 lba_to_status(context, lba);
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
276 context->status_buffer.format = SF_RELATIVE;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
277 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
278 context->status_buffer.format = SF_NOTREADY;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
279 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
280 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
281 case SF_TRACK:
2115
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
282 if (context->toc_valid && prev_pba >= LEADIN_SECTORS) {
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
283 uint32_t lba =prev_pba - LEADIN_SECTORS;
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
284 uint32_t i;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
285 for (i = 0; i < context->media->num_tracks; i++)
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
286 {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
287 if (lba < context->media->tracks[i].end_lba) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
288 if (context->media->tracks[i].fake_pregap) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
289 if (lba > context->media->tracks[i].fake_pregap) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
290 lba -= context->media->tracks[i].fake_pregap;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
291 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
292 //relative time counts down to 0 in pregap
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
293 lba = context->media->tracks[i].fake_pregap - lba;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
294 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
295 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
296 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
297 if (lba < context->media->tracks[i].start_lba) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
298 //relative time counts down to 0 in pregap
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
299 lba = context->media->tracks[i].start_lba - lba;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
300 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
301 lba -= context->media->tracks[i].start_lba;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
302 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
303 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
304 } else if (context->media->tracks[i].fake_pregap) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
305 lba -= context->media->tracks[i].fake_pregap;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
306 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
307 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
308 context->status_buffer.b.track.track_high = (i + 1) / 10;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
309 context->status_buffer.b.track.track_low = (i + 1) % 10;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
310 if (context->media->tracks[i].type == TRACK_DATA) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
311 context->status_buffer.b.track.control = 4;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
312 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
313 //TODO: pre-emphasis flag
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
314 //TODO: copy permitted flag
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
315 context->status_buffer.b.track.control = 0;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
316 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
317 context->status_buffer.b.track.adr = 1;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
318 context->status_buffer.format = SF_TRACK;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
319 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
320 context->status_buffer.format = SF_NOTREADY;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
321 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
322 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
323 case SF_TOCO:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
324 if (context->toc_valid) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
325 uint32_t total_fake_pregap = 0;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
326 for (uint32_t i = 0; i < context->media->num_tracks; i++)
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
327 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
328 total_fake_pregap += context->media->tracks[i].fake_pregap;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
329 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
330 lba_to_status(context, context->media->tracks[context->media->num_tracks - 1].end_lba + total_fake_pregap);
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
331 context->status_buffer.format = SF_TOCO;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
332 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
333 context->status_buffer.format = SF_NOTREADY;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
334 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
335 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
336 case SF_TOCT:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
337 if (context->toc_valid) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
338 context->status_buffer.b.toct.first_track_high = 0;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
339 context->status_buffer.b.toct.first_track_low = 1;
2073
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
340 context->status_buffer.b.toct.last_track_high = (context->media->num_tracks) / 10;
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
341 context->status_buffer.b.toct.last_track_low = (context->media->num_tracks) % 10;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
342 context->status_buffer.b.toct.version = 0;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
343 context->status_buffer.format = SF_TOCT;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
344 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
345 context->status_buffer.format = SF_NOTREADY;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
346 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
347 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
348 case SF_TOCN:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
349 if (context->toc_valid) {
2073
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
350 if (context->requested_track > context->media->num_tracks) {
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
351 printf("track number %d is bad\n", context->requested_track);
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
352 exit(0);
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
353 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
354 uint32_t lba = context->media->tracks[context->requested_track - 1].start_lba;
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
355 for (uint32_t i = 0; i < context->requested_track; i++) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
356 lba += context->media->tracks[i].fake_pregap;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
357 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
358 lba_to_status(context, lba);
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
359 if (context->media->tracks[context->requested_track - 1].type == TRACK_DATA) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
360 context->status_buffer.b.tocn.frame_low |= 0x80;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
361 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
362 context->status_buffer.b.tocn.track_low = context->requested_track % 10;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
363 context->status_buffer.format = SF_TOCN;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
364 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
365 context->status_buffer.format = SF_NOTREADY;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
366 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
367 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
368 case SF_NOTREADY:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
369 memset(&context->status_buffer, 0, sizeof(context->status_buffer) - 1);
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
370 context->status_buffer.format = SF_NOTREADY;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
371 break;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
372 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
373 if (context->error_status == DS_STOP) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
374 if (context->requested_format >= SF_TOCO && context->requested_format <= SF_TOCN) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
375 context->status_buffer.status = DS_TOC_READ;
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
376 } else if (context->seeking && context->status != DS_TRACKING) {
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
377 context->status_buffer.status = DS_SEEK;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
378 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
379 context->status_buffer.status = context->status;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
380 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
381 } else {
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
382 context->status_buffer.status = context->error_status;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
383 context->status_buffer.format = SF_NOTREADY;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
384 context->error_status = DS_STOP;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
385 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
386 if (context->requested_format != SF_TOCN) {
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
387 context->status_buffer.b.time.flags = !!(gate_array[GAO_CDD_CTRL] & BIT_MUTE); //TODO: populate these
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
388 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
389 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
390 // Did not receive our first command so just send zeroes
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
391 memset(&context->status_buffer, 0, sizeof(context->status_buffer) - 1);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
392 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
393 context->status_buffer.checksum = checksum((uint8_t *)&context->status_buffer);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
394 if (context->status_buffer.format != SF_NOTREADY) {
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
395 printf("CDD Status %X%X.%X%X%X%X%X%X.%X%X\n",
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
396 context->status_buffer.status, context->status_buffer.format,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
397 context->status_buffer.b.time.min_high, context->status_buffer.b.time.min_low,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
398 context->status_buffer.b.time.sec_high, context->status_buffer.b.time.sec_low,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
399 context->status_buffer.b.time.frame_high, context->status_buffer.b.time.frame_low,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
400 context->status_buffer.b.time.flags, context->status_buffer.checksum
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
401 );
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
402 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
403 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
404
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
405 static void run_command(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
406 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
407 uint8_t check = checksum((uint8_t*)&context->cmd_buffer);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
408 if (check != context->cmd_buffer.checksum) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
409 context->error_status = DS_SUM_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
410 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
411 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
412 if (context->cmd_buffer.must_be_zero) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
413 context->error_status = DS_CMD_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
414 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
415 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
416 context->first_cmd_received = 1;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
417 switch (context->cmd_buffer.cmd_type)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
418 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
419 case CMD_NOP:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
420 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
421 case CMD_STOP:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
422 puts("CDD CMD: STOP");
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
423 context->status = DS_STOP;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
424 context->requested_format = SF_ABSOLUTE;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
425 break;
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
426 case CMD_READ:
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
427 case CMD_SEEK: {
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
428 if (context->status == DS_DOOR_OPEN || context->status == DS_TRAY_MOVING || context->status == DS_DISC_LEADOUT || context->status == DS_DISC_LEADIN) {
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
429 context->error_status = DS_CMD_ERROR;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
430 break;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
431 }
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
432 if (context->requested_format == SF_TOCT || context->requested_format == SF_TOCN || context->requested_format == SF_TOCO) {
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
433 context->requested_format = SF_ABSOLUTE;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
434 }
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
435 if (!context->toc_valid) {
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
436 context->error_status = DS_CMD_ERROR;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
437 break;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
438 }
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
439 uint32_t lba = context->cmd_buffer.b.time.min_high * 10 + context->cmd_buffer.b.time.min_low;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
440 lba *= 60;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
441 lba += context->cmd_buffer.b.time.sec_high * 10 + context->cmd_buffer.b.time.sec_low;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
442 lba *= 75;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
443 lba += context->cmd_buffer.b.time.frame_high * 10 + context->cmd_buffer.b.time.frame_low;
2067
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
444 printf("CDD CMD: %s cmd for lba %d, MM:SS:FF %u%u:%u%u:%u%u\n",
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
445 context->cmd_buffer.cmd_type == CMD_READ ? "READ" : "SEEK", lba,
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
446 context->cmd_buffer.b.time.min_high, context->cmd_buffer.b.time.min_low,
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
447 context->cmd_buffer.b.time.sec_high, context->cmd_buffer.b.time.sec_low,
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
448 context->cmd_buffer.b.time.frame_high, context->cmd_buffer.b.time.frame_low
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
449 );
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
450 if (lba >= context->media->tracks[0].fake_pregap + context->media->tracks[context->media->num_tracks - 1].end_lba) {
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
451 context->error_status = DS_CMD_ERROR;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
452 break;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
453 }
2141
793715149f16 More accurate seek emulation
Michael Pavone <pavone@retrodev.com>
parents: 2139
diff changeset
454 context->seek_pba = lba + LEADIN_SECTORS - 3;
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
455 context->seeking = 1;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
456 context->status = context->cmd_buffer.cmd_type == CMD_READ ? DS_PLAY : DS_PAUSE;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
457 break;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
458 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
459 case CMD_REPORT_REQUEST:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
460 switch (context->cmd_buffer.b.format.status_type)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
461 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
462 case SF_ABSOLUTE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
463 case SF_RELATIVE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
464 case SF_TRACK:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
465 context->requested_format = context->cmd_buffer.b.format.status_type;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
466 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
467 case SF_TOCO:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
468 if (context->toc_valid) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
469 context->requested_format = SF_TOCO;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
470 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
471 context->error_status = DS_CMD_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
472 context->requested_format = SF_ABSOLUTE;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
473 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
474 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
475 case SF_TOCT:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
476 if (context->toc_valid) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
477 if (context->status == DS_STOP) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
478 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
479 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
480 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
481 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
482 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
483 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
484 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
485 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
486 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
487 context->requested_format = SF_TOCT;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
488 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
489 case SF_TOCN:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
490 context->requested_track = context->cmd_buffer.b.format.track_high * 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
491 context->requested_track += context->cmd_buffer.b.format.track_low;
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
492 if (!context->media || context->requested_track > context->media->num_tracks) {
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
493 context->requested_format = SF_ABSOLUTE;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
494 context->error_status = DS_CMD_ERROR;
2073
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
495 break;
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
496 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
497 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
498 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
499 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
500 context->requested_format = SF_TOCN;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
501 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
502 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
503 printf("CDD CMD: REPORT REQUEST(%d), format set to %d\n", context->cmd_buffer.b.format.status_type, context->requested_format);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
504 break;
2067
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
505 case CMD_PAUSE:
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
506 if (context->status == DS_DOOR_OPEN || context->status == DS_TRAY_MOVING || context->status == DS_DISC_LEADOUT || context->status == DS_DISC_LEADIN) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
507 context->error_status = DS_CMD_ERROR;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
508 break;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
509 }
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
510 if (context->requested_format == SF_TOCT || context->requested_format == SF_TOCN) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
511 context->requested_format = SF_ABSOLUTE;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
512 }
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
513 if (!context->toc_valid) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
514 context->error_status = DS_CMD_ERROR;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
515 break;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
516 }
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
517 if (context->status == DS_STOP) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
518 context->seeking = 1;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
519 context->seek_pba = LEADIN_SECTORS + context->media->tracks[0].fake_pregap + context->media->tracks[0].start_lba;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
520 printf("CDD CMD: PAUSE, seeking to %u\n", context->seek_pba);
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
521 } else {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
522 puts("CDD CMD: PAUSE");
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
523 }
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
524 context->status = DS_PAUSE;
2095
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
525 if (!context->seeking) {
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
526 context->pause_pba = context->head_pba;
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
527 }
2067
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
528 break;
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
529 case CMD_PLAY:
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
530 if (context->status == DS_DOOR_OPEN || context->status == DS_TRAY_MOVING || context->status == DS_DISC_LEADOUT || context->status == DS_DISC_LEADIN) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
531 context->error_status = DS_CMD_ERROR;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
532 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
533 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
534 if (context->requested_format == SF_TOCT || context->requested_format == SF_TOCN) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
535 context->requested_format = SF_ABSOLUTE;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
536 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
537 if (!context->toc_valid) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
538 context->error_status = DS_CMD_ERROR;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
539 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
540 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
541 if (context->status == DS_STOP || context->status == DS_TOC_READ) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
542 context->seeking = 1;
2100
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents: 2096
diff changeset
543 context->seek_pba = LEADIN_SECTORS + context->media->tracks[0].fake_pregap + context->media->tracks[0].start_lba - 4;
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents: 2096
diff changeset
544 printf("CDD CMD: PLAY, seeking to %u\n", context->seek_pba);
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
545 } else {
2100
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents: 2096
diff changeset
546 puts("CDD CMD: PLAY");
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
547 }
2100
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents: 2096
diff changeset
548 context->status = DS_PLAY;
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
549 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
550 //TODO: CMD_FFWD, CMD_RWD
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
551 case CMD_TRACK_SKIP:
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
552 if (context->status != DS_PLAY && context->status != DS_PAUSE && context->status != DS_DISC_LEADOUT) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
553 context->error_status = DS_CMD_ERROR;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
554 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
555 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
556 if (context->requested_format == SF_TOCT || context->requested_format == SF_TOCN) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
557 context->requested_format = SF_ABSOLUTE;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
558 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
559 if (!context->toc_valid) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
560 context->error_status = DS_CMD_ERROR;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
561 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
562 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
563 {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
564 int32_t to_skip = context->cmd_buffer.b.skip.tracks_highest << 12 | context->cmd_buffer.b.skip.tracks_midhigh << 8
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
565 | context->cmd_buffer.b.skip.tracks_midlow << 4 | context->cmd_buffer.b.skip.tracks_lowest;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
566 if (context->cmd_buffer.b.skip.direction) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
567 to_skip = -to_skip;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
568 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
569 printf("CDD CMD: TRACK_SKIP direction %u, num_tracks %i, delta %i\n", context->cmd_buffer.b.skip.direction, abs(to_skip), to_skip);
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
570 //circumference at 83mm point (roughly half way between inner and outer edge of program area)
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
571 //~ 260.75cm ~ 15 sectors
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
572 context->seek_pba = context->head_pba + to_skip * 15;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
573 context->seeking = 1;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
574 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
575 context->status = DS_TRACKING;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
576 break;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
577 default:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
578 printf("CDD CMD: Unimplemented(%d)\n", context->cmd_buffer.cmd_type);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
579 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
580 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
581
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
582 void cdd_mcu_run(cdd_mcu *context, uint32_t cycle, uint16_t *gate_array, lc8951* cdc, cdd_fader* fader)
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
583 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
584 uint32_t cd_cycle = mclks_to_cd_block(cycle);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
585 if (!(gate_array[GAO_CDD_CTRL] & BIT_HOCK)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
586 //it's a little unclear if this gates the actual cd block clock or just handshaking
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
587 //assum it's actually the clock for now
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
588 for (; context->cycle < cd_cycle; context->cycle += CDD_MCU_DIVIDER) {
2089
0db3af42dd72 Fix some byte order stuff for audio tracks
Michael Pavone <pavone@retrodev.com>
parents: 2084
diff changeset
589 if (context->cycle >= context->next_byte_cycle) {
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
590 cdd_fader_data(fader, 0);
2130
28b6453cf7e3 Emulate CDC sync detection and sync insertion rather than relying on external knowledge about sector offset
Michael Pavone <pavone@retrodev.com>
parents: 2124
diff changeset
591 lc8951_write_byte(cdc, cd_block_to_mclks(context->cycle), 0, 0);
2089
0db3af42dd72 Fix some byte order stuff for audio tracks
Michael Pavone <pavone@retrodev.com>
parents: 2084
diff changeset
592 context->next_byte_cycle += BYTE_CLOCKS;
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
593 }
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
594 }
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
595 gate_array[GAO_CDD_CTRL] |= BIT_MUTE;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
596 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
597 }
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
598 uint32_t next_subcode = context->last_sector_cycle + SECTOR_CLOCKS;
2115
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
599 uint32_t next_nibble;
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
600 if (context->current_status_nibble > 0) {
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
601 next_nibble = context->last_nibble_cycle + NIBBLE_CLOCKS;
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
602 } else if (!context->current_status_nibble) {
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
603 next_nibble = context->last_sector_cycle + PROCESSING_DELAY;
2152
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
604 if (context->coarse_seek % 3) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
605 next_nibble += SECTOR_CLOCKS * (3 - (context->coarse_seek % 3));
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
606 }
2115
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
607 } else {
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
608 next_nibble = CYCLE_NEVER;
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
609 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
610 uint32_t next_cmd_nibble = context->current_cmd_nibble >= 0 ? context->last_nibble_cycle + NIBBLE_CLOCKS : CYCLE_NEVER;
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
611
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
612 for (; context->cycle < cd_cycle; context->cycle += CDD_MCU_DIVIDER)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
613 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
614 if (context->cycle >= next_subcode) {
2152
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
615 uint32_t old_coarse = context->coarse_seek;
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
616 context->last_sector_cycle = context->cycle;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
617 next_subcode = context->cycle + SECTOR_CLOCKS;
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
618 update_status(context, gate_array);
2115
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
619 next_nibble = context->cycle + PROCESSING_DELAY;
2152
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
620 if (context->coarse_seek % 3) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
621 next_nibble += SECTOR_CLOCKS * (3 - (context->coarse_seek % 3));
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
622 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
623 context->current_status_nibble = 0;
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
624 if (context->next_subcode_int_cycle != CYCLE_NEVER) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
625 context->subcode_int_pending = 1;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
626 }
2142
d9151d0894c7 Fix some CD-ROM emulation issues
Michael Pavone <pavone@retrodev.com>
parents: 2141
diff changeset
627 if ((context->status == DS_PLAY || context->status == DS_PAUSE) && context->head_pba >= LEADIN_SECTORS && !context->seeking) {
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
628 context->current_sector_byte = 0;
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
629 context->current_subcode_byte = 0;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
630 context->next_subcode_cycle = context->cycle;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
631 context->next_subcode_int_cycle = cd_block_to_mclks(next_subcode);
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
632 } else {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
633 context->next_subcode_int_cycle = CYCLE_NEVER;
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
634 }
2152
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
635 if (old_coarse != context->coarse_seek) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
636 context->next_int_cycle = cd_block_to_mclks(context->cycle + PROCESSING_DELAY + 7 * NIBBLE_CLOCKS);
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
637 if (context->coarse_seek % 3) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
638 context->next_int_cycle += cd_block_to_mclks(SECTOR_CLOCKS * (3 - (context->coarse_seek % 3)));
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
639 }
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
640 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
641 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
642 if (context->cycle >= next_nibble) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
643 if (context->current_status_nibble == sizeof(cdd_status)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
644 context->current_status_nibble = -1;
2139
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
645 gate_array[GAO_CDD_CTRL] &= ~BIT_DRS;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
646 if (context->cmd_recv_pending) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
647 context->cmd_recv_pending = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
648 context->current_cmd_nibble = 0;
2139
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
649 gate_array[GAO_CDD_CTRL] |= BIT_DTS;
2075
983f57d08eff Fix a couple of CDD bugs
Michael Pavone <pavone@retrodev.com>
parents: 2073
diff changeset
650 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
651 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
652 context->cmd_recv_wait = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
653 }
2075
983f57d08eff Fix a couple of CDD bugs
Michael Pavone <pavone@retrodev.com>
parents: 2073
diff changeset
654 next_nibble = CYCLE_NEVER;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
655 } else {
2139
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
656 gate_array[GAO_CDD_CTRL] |= BIT_DRS;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
657 uint8_t value = ((uint8_t *)&context->status_buffer)[context->current_status_nibble];
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
658 int ga_index = GAO_CDD_STATUS + (context->current_status_nibble >> 1);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
659 if (context->current_status_nibble & 1) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
660 gate_array[ga_index] = value | (gate_array[ga_index] & 0xFF00);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
661 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
662 gate_array[ga_index] = (value << 8) | (gate_array[ga_index] & 0x00FF);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
663 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
664 if (context->current_status_nibble == 7) {
2152
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
665 if (!(context->coarse_seek % 3)) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
666 context->int_pending = 1;
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
667 if (context->coarse_seek) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
668 context->next_int_cycle = cd_block_to_mclks(context->cycle + 3 * SECTOR_CLOCKS);
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
669 } else {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
670 context->next_int_cycle = cd_block_to_mclks(context->cycle + SECTOR_CLOCKS);
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
671 }
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
672 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
673 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
674 context->current_status_nibble++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
675 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
676 next_nibble = context->cycle + NIBBLE_CLOCKS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
677 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
678 } else if (context->cycle >= next_cmd_nibble) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
679 if (context->current_cmd_nibble == sizeof(cdd_cmd)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
680 next_cmd_nibble = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
681 context->current_cmd_nibble = -1;
2139
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
682 gate_array[GAO_CDD_CTRL] &= ~BIT_DTS;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
683 run_command(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
684 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
685 int ga_index = GAO_CDD_CMD + (context->current_cmd_nibble >> 1);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
686 uint8_t value = (context->current_cmd_nibble & 1) ? gate_array[ga_index] : gate_array[ga_index] >> 8;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
687 ((uint8_t *)&context->cmd_buffer)[context->current_cmd_nibble] = value;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
688 context->current_cmd_nibble++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
689 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
690 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
691 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
692 }
2089
0db3af42dd72 Fix some byte order stuff for audio tracks
Michael Pavone <pavone@retrodev.com>
parents: 2084
diff changeset
693 if (context->cycle >= context->next_byte_cycle) {
2100
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents: 2096
diff changeset
694 if (context->current_sector_byte >= 0 && (!fader->byte_counter || context->current_sector_byte)) {
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
695 uint8_t byte = context->media->read(context->media, context->current_sector_byte);
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
696 lc8951_write_byte(cdc, cd_block_to_mclks(context->cycle), context->current_sector_byte++, byte);
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
697 cdd_fader_data(fader, gate_array[GAO_CDD_CTRL] & BIT_MUTE ? 0 : byte);
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
698 } else {
2130
28b6453cf7e3 Emulate CDC sync detection and sync insertion rather than relying on external knowledge about sector offset
Michael Pavone <pavone@retrodev.com>
parents: 2124
diff changeset
699 lc8951_write_byte(cdc, cd_block_to_mclks(context->cycle), 0, 0);
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
700 cdd_fader_data(fader, 0);
2100
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents: 2096
diff changeset
701 if (context->current_sector_byte >= 0) {
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents: 2096
diff changeset
702 next_subcode += BYTE_CLOCKS;
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
703 context->last_sector_cycle += BYTE_CLOCKS;
2100
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents: 2096
diff changeset
704 }
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
705 }
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
706 if (context->current_sector_byte == 2352) {
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
707 context->current_sector_byte = -1;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
708 }
2089
0db3af42dd72 Fix some byte order stuff for audio tracks
Michael Pavone <pavone@retrodev.com>
parents: 2084
diff changeset
709 context->next_byte_cycle += BYTE_CLOCKS;
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
710 }
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
711 if (context->cycle >= context->next_subcode_cycle) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
712 uint8_t byte;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
713 if (!context->current_subcode_byte) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
714 byte = 0x9F;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
715 //This probably happens after the second sync symbol, but doing it here simplifies things a little
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
716 context->current_subcode_dest &= 0x7E;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
717 gate_array[GAO_SUBCODE_ADDR] = (context->current_subcode_dest - 96) & 0x7E;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
718 } else if (context->current_subcode_byte == 1) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
719 byte = 0xFD;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
720 } else {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
721 byte = context->media->read_subcodes(context->media, context->current_subcode_byte - 2);
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
722 }
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
723 int offset = GAO_SUBCODE_START + (context->current_subcode_dest >> 1);
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
724 if (context->current_subcode_dest & 1) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
725 gate_array[offset] &= 0xFF00;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
726 gate_array[offset] |= byte;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
727 } else {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
728 gate_array[offset] &= 0x00FF;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
729 gate_array[offset] |= byte << 8;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
730 }
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
731 context->current_subcode_byte++;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
732 if (context->current_subcode_byte == 98) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
733 context->current_subcode_byte = 0;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
734 } else if (context->current_subcode_byte == 32) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
735 gate_array[GAO_SUBCODE_ADDR] |= 0x80;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
736 }
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
737 context->current_subcode_dest++;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
738 context->current_subcode_dest &= 0x7F;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
739 context->next_subcode_cycle += SUBCODE_CLOCKS;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
740 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
741 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
742 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
743
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
744 void cdd_mcu_start_cmd_recv(cdd_mcu *context, uint16_t *gate_array)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
745 {
2139
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
746 if (gate_array[GAO_CDD_CTRL] & BIT_DTS) {
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
747 return;
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
748 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
749 if (context->cmd_recv_wait) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
750 context->current_cmd_nibble = 0;
2139
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
751 gate_array[GAO_CDD_CTRL] |= BIT_DTS;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
752 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
753 context->cmd_recv_wait = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
754 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
755 context->cmd_recv_pending = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
756 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
757 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
758
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
759 void cdd_hock_enabled(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
760 {
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
761 context->last_sector_cycle = context->cycle;
2115
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
762 context->next_int_cycle = cd_block_to_mclks(context->cycle + SECTOR_CLOCKS + PROCESSING_DELAY + 7 * NIBBLE_CLOCKS);
2152
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
763 if (context->coarse_seek % 3) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
764 context->next_int_cycle += cd_block_to_mclks(SECTOR_CLOCKS * (3 - (context->coarse_seek % 3)));
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents: 2142
diff changeset
765 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
766 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
767
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
768 void cdd_hock_disabled(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
769 {
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
770 context->last_sector_cycle = CYCLE_NEVER;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
771 context->next_int_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
772 context->last_nibble_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
773 context->current_status_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
774 context->current_cmd_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
775 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
776
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
777 void cdd_mcu_adjust_cycle(cdd_mcu *context, uint32_t deduction)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
778 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
779 uint32_t cd_deduction = mclks_to_cd_block(deduction);
2073
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
780 if (context->cycle > cd_deduction) {
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
781 context->cycle -= cd_deduction;
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
782 } else {
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
783 context->cycle = 0;
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
784 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
785 if (context->next_int_cycle != CYCLE_NEVER) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
786 context->next_int_cycle -= deduction;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
787 }
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
788 if (context->last_sector_cycle != CYCLE_NEVER) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
789 if (context->last_sector_cycle > cd_deduction) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
790 context->last_sector_cycle -= cd_deduction;
2073
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
791 } else {
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
792 context->last_sector_cycle = 0;
2073
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
793 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
794 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
795 if (context->last_nibble_cycle != CYCLE_NEVER) {
2073
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
796 if (context->last_nibble_cycle > cd_deduction) {
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
797 context->last_nibble_cycle -= cd_deduction;
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
798 } else {
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
799 context->last_nibble_cycle = 0;
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
800 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
801 }
2096
460c93c19146 Fix CDD byte cycle counter deduction that got broken when I fixed the off-by-one on CD-DA
Michael Pavone <pavone@retrodev.com>
parents: 2095
diff changeset
802 context->next_byte_cycle -= cd_deduction;
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
803 if (context->next_subcode_cycle != CYCLE_NEVER) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
804 context->next_subcode_cycle -= cd_deduction;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
805 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
806 }