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annotate cdd_mcu.c @ 2347:047253715fd8

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Minor fix to seek time calculation
author Michael Pavone <pavone@retrodev.com>
date Wed, 11 Oct 2023 11:36:18 -0700
parents 9ead0fe69d9b
children 2025ba21026a
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1 #include <stdlib.h>
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2 #include <string.h>
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3 #include "cdd_mcu.h"
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4 #include "backend.h"
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5
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6 #define SCD_MCLKS 50000000
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7 #define CD_BLOCK_CLKS 16934400
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8 #define CDD_MCU_DIVIDER 8
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9 #define SECTORS_PER_SECOND 75
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10 #define SECTOR_CLOCKS (CD_BLOCK_CLKS/SECTORS_PER_SECOND)
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11 #define NIBBLE_CLOCKS (CDD_MCU_DIVIDER * 77)
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12 #define BYTE_CLOCKS (SECTOR_CLOCKS/2352) // 96
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13 #define SUBCODE_CLOCKS (SECTOR_CLOCKS/98)
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14 #define PROCESSING_DELAY 54000 //approximate, based on Wondermega M1 measurements
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15
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16 //lead in start max diameter 46 mm
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17 //program area start max diameter 50 mm
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18 //difference 4 mm = 4000 um
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19 //radius difference 2 mm = 2000 um
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20 //track pitch 1.6 um
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21 //1250 physical tracks in between
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22 //linear speed 1.2 m/s - 1.4 m/s
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23 // 1.2 m = 1200 mm
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24 // circumference at 46 mm ~ 144.51 mm
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25 // circumference at 50 mm ~ 157.08 mm
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26 // avg is 150.795
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27 // 75 sectors per second
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28 // 16 mm "typical" length of a sector
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29 // ~9.4 sectors per track in lead-in area
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30 #define LEADIN_SECTORS 11780
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31
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32 static uint32_t cd_block_to_mclks(uint32_t cycles)
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33 {
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34 return ((uint64_t)cycles) * ((uint64_t)SCD_MCLKS) / ((uint64_t)CD_BLOCK_CLKS);
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35 }
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36
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37 static uint32_t mclks_to_cd_block(uint32_t cycles)
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38 {
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39 return ((uint64_t)cycles) * ((uint64_t)CD_BLOCK_CLKS) / ((uint64_t)SCD_MCLKS);
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40 }
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41
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42 void cdd_mcu_init(cdd_mcu *context, system_media *media)
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43 {
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44 context->next_int_cycle = CYCLE_NEVER;
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45 context->next_subcode_int_cycle = CYCLE_NEVER;
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46 context->last_sector_cycle = CYCLE_NEVER;
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47 context->last_nibble_cycle = CYCLE_NEVER;
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48 context->next_byte_cycle = 0;
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49 context->next_subcode_cycle = CYCLE_NEVER;
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50 context->requested_format = SF_NOTREADY;
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51 context->media = media;
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52 context->current_status_nibble = -1;
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53 context->current_cmd_nibble = -1;
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54 context->current_sector_byte = -1;
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55 context->current_subcode_byte = -1;
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56 context->current_subcode_dest = 0;
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57 }
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58
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59 enum {
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60 GAO_CDD_CTRL,
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61 GAO_CDD_STATUS,
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62 GAO_CDD_CMD = GAO_CDD_STATUS+5,
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63 GAO_SUBCODE_ADDR = (0x68-0x36)/2,
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64 GAO_SUBCODE_START = (0x100-0x36)/2
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65 };
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66 //GAO_CDD_CTRL
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67 #define BIT_MUTE 0x100
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68 #define BIT_HOCK 0x0004
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69 #define BIT_DRS 0x0002
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70 #define BIT_DTS 0x0001
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71
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72 static uint8_t checksum(uint8_t *vbuffer)
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73 {
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74 uint8_t *buffer = vbuffer;
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75 uint8_t sum = 0;
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76 for (int i = 0; i < 9; i++)
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77 {
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78 sum += buffer[i];
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79 }
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80 return (~sum) & 0xF;
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81 }
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82
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83 #define MIN_CIRCUMFERENCE 144.51f
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84 #define MAX_CIRCUMFERENCE 364.42f
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85 #define SECTOR_LENGTH 16.0f
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86 // max diameter for program area 116 mm
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87 // circumference ~ 364.42 mm
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88 // ~ 23 sectors per physical track at edge
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89 // ~9 sectors per physical track at start of lead-in
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90 // seek test suggests average somewhere around 54-60 tracks for a long seek, with a peak around 80
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91 // Sonic CD title screen seems to need a much higher value to get reasonable sync
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92 #define COARSE_SEEK_TRACKS 60
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93 static void handle_seek(cdd_mcu *context)
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94 {
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95 uint32_t old_coarse = context->coarse_seek;
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96 if (context->seeking) {
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97 if (context->seek_pba == context->head_pba) {
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98 context->seeking = 0;
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99 context->coarse_seek = 0;
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100 if (context->status == DS_PAUSE) {
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101 context->pause_pba = context->head_pba;
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102 }
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103 } else {
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104 //TODO: better estimate of sectors per track at current head location
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105 //TODO: drive will periodically lose tracking when seeking which slows
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106 //things down from this ideal speed I'm curently estimating
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107 float circumference = (MAX_CIRCUMFERENCE-MIN_CIRCUMFERENCE) * ((float)context->head_pba) / ((74 * 60 + 41) * SECTORS_PER_SECOND + LEADIN_SECTORS + 22) + MIN_CIRCUMFERENCE;
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108 float sectors_per_track = circumference / SECTOR_LENGTH;
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109 uint32_t max_seek = sectors_per_track * COARSE_SEEK_TRACKS;
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110 uint32_t min_seek = sectors_per_track;
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111
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112 uint32_t old_pba = context->head_pba;
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113 if (context->seek_pba > context->head_pba) {
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114 uint32_t seek_amount;
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115 for (seek_amount = max_seek; seek_amount >= min_seek; seek_amount >>= 1)
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116 {
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117 if (context->seek_pba - context->head_pba >= seek_amount) {
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118 break;
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119 }
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120 }
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121 if (seek_amount >= min_seek) {
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122 context->head_pba += seek_amount;
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123 } else {
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124 context->head_pba++;
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125 }
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126 } else {
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127 uint32_t seek_amount;
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128 for (seek_amount = max_seek; seek_amount >= min_seek; seek_amount >>= 1)
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129 {
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130 if (context->head_pba - context->seek_pba >= seek_amount) {
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131 break;
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132 }
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133 }
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134 if (seek_amount >= min_seek) {
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Michael Pavone <pavone@retrodev.com>
parents: 2139
diff changeset
135 context->head_pba -= seek_amount;
793715149f16 More accurate seek emulation
Michael Pavone <pavone@retrodev.com>
parents: 2139
diff changeset
136 } else if (context->head_pba >= min_seek){
793715149f16 More accurate seek emulation
Michael Pavone <pavone@retrodev.com>
parents: 2139
diff changeset
137 context->head_pba -= min_seek;
793715149f16 More accurate seek emulation
Michael Pavone <pavone@retrodev.com>
parents: 2139
diff changeset
138 } else {
793715149f16 More accurate seek emulation
Michael Pavone <pavone@retrodev.com>
parents: 2139
diff changeset
139 context->head_pba = 0;
793715149f16 More accurate seek emulation
Michael Pavone <pavone@retrodev.com>
parents: 2139
diff changeset
140 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
141 }
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
142 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
143 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
144 } 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
145 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
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 }
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
149 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
150 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
151 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
152
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
153 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
154 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
155 uint32_t seconds = lba / 75;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
156 uint32_t frames = lba % 75;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
157 uint32_t minutes = seconds / 60;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
158 seconds = seconds % 60;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
159 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
160 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
161 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
162 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
163 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
164 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
165 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
166
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
167 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
168 {
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
169 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
170 uint32_t prev_pba = context->head_pba;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
171 switch (context->status)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
172 {
2266
5083bc84fd84 Finish seeking after a CDD STOP command is sent
Michael Pavone <pavone@retrodev.com>
parents: 2215
diff changeset
173 case DS_STOP:
5083bc84fd84 Finish seeking after a CDD STOP command is sent
Michael Pavone <pavone@retrodev.com>
parents: 2215
diff changeset
174 handle_seek(context);
5083bc84fd84 Finish seeking after a CDD STOP command is sent
Michael Pavone <pavone@retrodev.com>
parents: 2215
diff changeset
175 break;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
176 case DS_PLAY:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
177 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
178 if (!context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
179 context->head_pba++;
2081
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
180 }
cfd53c94fffb Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents: 2080
diff changeset
181 if (context->head_pba >= LEADIN_SECTORS) {
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
182 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
183 if (!context->seeking && context->media->tracks[track].type == TRACK_AUDIO) {
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
184 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE;
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
185 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
186 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
187 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
188 case DS_PAUSE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
189 handle_seek(context);
2095
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
190 if (!context->seeking) {
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
191 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
192 //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
193 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
194 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
195 //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
196 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
197 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
198 context->head_pba = context->pause_pba - diff;
2095
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
199 if (context->head_pba < LEADIN_SECTORS) {
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
200 context->head_pba = LEADIN_SECTORS;
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
201 }
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
202 }
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
203 }
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
204 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
205 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
206 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
207 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
208 case DS_TOC_READ:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
209 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
210 if (!context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
211 context->head_pba++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
212 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
213 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
214 context->toc_valid = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
215 context->seeking = 1;
2095
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
216 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
217 context->status = DS_PAUSE;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
218 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
219
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
220 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
221 context->status = DS_NO_DISC;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
222 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
223 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
224 break;
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
225 case DS_TRACKING:
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
226 handle_seek(context);
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
227 if (!context->seeking) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
228 context->status = DS_PAUSE;
2095
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
229 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
230 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
231 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
232 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
233 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
234 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
235 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
236 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
237 break;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
238 }
2124
ad346054ca78 Return "not ready" status sometimes when seeking. Fixes issues in multiple games
Michael Pavone <pavone@retrodev.com>
parents: 2122
diff changeset
239 uint8_t force_not_ready = 0;
2270
827ab6dd534a Adjust when not-ready is returned during coarse seeking to fix some regressions
Michael Pavone <pavone@retrodev.com>
parents: 2266
diff changeset
240 if (context->coarse_seek && !(context->coarse_seek % 6)) {
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
241 //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
242 //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
243 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
244 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
245 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
246 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
247 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
248 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
249 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
250 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
251 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
252 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
253 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
254 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
255 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
256 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
257 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
258 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
259 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
260 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
261 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
262 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
263 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
264 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
265 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
266 //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
267 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
268 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
269 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
270 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
271 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
272 //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
273 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
274 } else {
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
275 lba -= context->media->tracks[i].start_lba;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
276 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
277 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
278 } 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
279 lba -= context->media->tracks[i].fake_pregap;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
280 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
281 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
282 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
283 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
284 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
285 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
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 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
288 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
289 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
290 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
291 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
292 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
293 {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
294 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
295 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
296 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
297 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
298 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
299 //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
300 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
301 break;
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 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
304 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
305 //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
306 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
307 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
308 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
309 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
310 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
311 } 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
312 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
313 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
314 }
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.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
316 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
317 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
318 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
319 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
320 //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
321 //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
322 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
323 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
324 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
325 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
326 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
327 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
328 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
329 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
330 case SF_TOCO:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
331 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
332 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
333 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
334 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
335 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
336 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
337 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
338 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
339 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
340 context->status_buffer.format = SF_NOTREADY;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
341 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
342 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
343 case SF_TOCT:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
344 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
345 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
346 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
347 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
348 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
349 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
350 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
351 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
352 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
353 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
354 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
355 case SF_TOCN:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
356 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
357 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
358 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
359 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
360 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
361 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
362 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
363 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
364 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
365 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
366 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
367 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
368 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
369 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
370 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
371 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
372 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
373 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
374 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
375 case SF_NOTREADY:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
376 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
377 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
378 break;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
379 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
380 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
381 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
382 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
383 } 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
384 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
385 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
386 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
387 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
388 } else {
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
389 context->status_buffer.status = context->error_status;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
390 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
391 context->error_status = DS_STOP;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
392 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
393 if (context->requested_format != SF_TOCN) {
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
394 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
395 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
396 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
397 // 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
398 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
399 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
400 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
401 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
402 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
403 context->status_buffer.status, context->status_buffer.format,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
404 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
405 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
406 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
407 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
408 );
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
409 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
410 }
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 static void run_command(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
413 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
414 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
415 if (check != context->cmd_buffer.checksum) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
416 context->error_status = DS_SUM_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
417 return;
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 if (context->cmd_buffer.must_be_zero) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
420 context->error_status = DS_CMD_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
421 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
422 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
423 context->first_cmd_received = 1;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
424 switch (context->cmd_buffer.cmd_type)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
425 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
426 case CMD_NOP:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
427 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
428 case CMD_STOP:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
429 puts("CDD CMD: STOP");
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
430 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
431 context->requested_format = SF_ABSOLUTE;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
432 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
433 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
434 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
435 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
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 }
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
439 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
440 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
441 }
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 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
443 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
444 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
445 }
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
446 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
447 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
448 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
449 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
450 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
451 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
452 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
453 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
454 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
455 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
456 );
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
457 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
458 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
459 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
460 }
2141
793715149f16 More accurate seek emulation
Michael Pavone <pavone@retrodev.com>
parents: 2139
diff changeset
461 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
462 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
463 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
464 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
465 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
466 case CMD_REPORT_REQUEST:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
467 switch (context->cmd_buffer.b.format.status_type)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
468 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
469 case SF_ABSOLUTE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
470 case SF_RELATIVE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
471 case SF_TRACK:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
472 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
473 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
474 case SF_TOCO:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
475 if (context->toc_valid) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
476 context->requested_format = SF_TOCO;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
477 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
478 context->error_status = DS_CMD_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
479 context->requested_format = SF_ABSOLUTE;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
480 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
481 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
482 case SF_TOCT:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
483 if (context->toc_valid) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
484 if (context->status == DS_STOP) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
485 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
486 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
487 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
488 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
489 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
490 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
491 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
492 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
493 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
494 context->requested_format = SF_TOCT;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
495 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
496 case SF_TOCN:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
497 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
498 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
499 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
500 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
501 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
502 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
503 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
504 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
505 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
506 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
507 context->requested_format = SF_TOCN;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
508 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
509 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
510 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
511 break;
2067
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
512 case CMD_PAUSE:
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
513 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
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->requested_format == SF_TOCT || context->requested_format == SF_TOCN) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
518 context->requested_format = SF_ABSOLUTE;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
519 }
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
520 if (!context->toc_valid) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
521 context->error_status = DS_CMD_ERROR;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
522 break;
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 if (context->status == DS_STOP) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
525 context->seeking = 1;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
526 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
527 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
528 } else {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
529 puts("CDD CMD: PAUSE");
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
530 }
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
531 context->status = DS_PAUSE;
2095
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
532 if (!context->seeking) {
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
533 context->pause_pba = context->head_pba;
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
diff changeset
534 }
2067
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
535 break;
2084
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
536 case CMD_PLAY:
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
537 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
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->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
542 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
543 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
544 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
545 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
546 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
547 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
548 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
549 context->seeking = 1;
2100
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents: 2096
diff changeset
550 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
551 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
552 } else {
2100
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents: 2096
diff changeset
553 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
554 }
2100
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents: 2096
diff changeset
555 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
556 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
557 //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
558 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
559 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
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 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
564 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
565 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
566 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
567 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
568 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
569 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
570 {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
571 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
572 | 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
573 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
574 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
575 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
576 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
577 //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
578 //~ 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
579 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
580 context->seeking = 1;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
581 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents: 2081
diff changeset
582 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
583 break;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
584 default:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
585 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
586 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
587 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
588
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
589 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
590 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
591 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
592 if (!(gate_array[GAO_CDD_CTRL] & BIT_HOCK)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
593 //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
594 //assum it's actually the clock for now
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
595 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
596 if (context->cycle >= context->next_byte_cycle) {
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
597 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
598 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
599 context->next_byte_cycle += BYTE_CLOCKS;
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
600 }
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
601 }
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
602 gate_array[GAO_CDD_CTRL] |= BIT_MUTE;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
603 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
604 }
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
605 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
606 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
607 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
608 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
609 } else if (!context->current_status_nibble) {
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
610 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
611 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
612 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
613 }
2115
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
614 } else {
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents: 2100
diff changeset
615 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
616 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
617 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
618
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
619 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
620 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
621 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
622 uint32_t old_coarse = context->coarse_seek;
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
623 context->last_sector_cycle = context->cycle;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
624 next_subcode = context->cycle + SECTOR_CLOCKS;
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
625 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
626 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
627 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
628 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
629 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
630 context->current_status_nibble = 0;
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
631 if (context->next_subcode_int_cycle != CYCLE_NEVER) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
632 context->subcode_int_pending = 1;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
633 }
2142
d9151d0894c7 Fix some CD-ROM emulation issues
Michael Pavone <pavone@retrodev.com>
parents: 2141
diff changeset
634 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
635 context->current_sector_byte = 0;
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
636 context->current_subcode_byte = 0;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
637 context->next_subcode_cycle = context->cycle;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
638 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
639 } else {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
640 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
641 }
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
642 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
643 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
644 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
645 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
646 }
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
647 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
648 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
649 if (context->cycle >= next_nibble) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
650 if (context->current_status_nibble == sizeof(cdd_status)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
651 context->current_status_nibble = -1;
2139
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
652 gate_array[GAO_CDD_CTRL] &= ~BIT_DRS;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
653 if (context->cmd_recv_pending) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
654 context->cmd_recv_pending = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
655 context->current_cmd_nibble = 0;
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_DTS;
2075
983f57d08eff Fix a couple of CDD bugs
Michael Pavone <pavone@retrodev.com>
parents: 2073
diff changeset
657 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
658 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
659 context->cmd_recv_wait = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
660 }
2075
983f57d08eff Fix a couple of CDD bugs
Michael Pavone <pavone@retrodev.com>
parents: 2073
diff changeset
661 next_nibble = CYCLE_NEVER;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
662 } else {
2139
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
663 gate_array[GAO_CDD_CTRL] |= BIT_DRS;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
664 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
665 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
666 if (context->current_status_nibble & 1) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
667 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
668 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
669 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
670 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
671 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
672 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
673 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
674 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
675 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
676 } 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
677 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
678 }
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
679 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
680 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
681 context->current_status_nibble++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
682 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
683 next_nibble = context->cycle + NIBBLE_CLOCKS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
684 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
685 } else if (context->cycle >= next_cmd_nibble) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
686 if (context->current_cmd_nibble == sizeof(cdd_cmd)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
687 next_cmd_nibble = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
688 context->current_cmd_nibble = -1;
2139
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
689 gate_array[GAO_CDD_CTRL] &= ~BIT_DTS;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
690 run_command(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
691 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
692 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
693 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
694 ((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
695 context->current_cmd_nibble++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
696 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
697 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
698 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
699 }
2089
0db3af42dd72 Fix some byte order stuff for audio tracks
Michael Pavone <pavone@retrodev.com>
parents: 2084
diff changeset
700 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
701 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
702 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
703 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
704 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
705 } 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
706 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
707 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
708 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
709 next_subcode += BYTE_CLOCKS;
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
710 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
711 }
2080
bafb757e1cd2 Implement CD audio
Michael Pavone <pavone@retrodev.com>
parents: 2079
diff changeset
712 }
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
713 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
714 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
715 }
2089
0db3af42dd72 Fix some byte order stuff for audio tracks
Michael Pavone <pavone@retrodev.com>
parents: 2084
diff changeset
716 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
717 }
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
718 if (context->cycle >= context->next_subcode_cycle) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
719 uint8_t byte;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
720 if (!context->current_subcode_byte) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
721 byte = 0x9F;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
722 //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
723 context->current_subcode_dest &= 0x7E;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
724 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
725 } else if (context->current_subcode_byte == 1) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
726 byte = 0xFD;
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 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
729 }
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
730 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
731 if (context->current_subcode_dest & 1) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
732 gate_array[offset] &= 0xFF00;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
733 gate_array[offset] |= byte;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
734 } else {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
735 gate_array[offset] &= 0x00FF;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
736 gate_array[offset] |= byte << 8;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
737 }
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
738 context->current_subcode_byte++;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
739 if (context->current_subcode_byte == 98) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
740 context->current_subcode_byte = 0;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
741 } else if (context->current_subcode_byte == 32) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
742 gate_array[GAO_SUBCODE_ADDR] |= 0x80;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
743 }
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
744 context->current_subcode_dest++;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
745 context->current_subcode_dest &= 0x7F;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
746 context->next_subcode_cycle += SUBCODE_CLOCKS;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
747 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
748 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
749 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
750
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
751 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
752 {
2139
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
753 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
754 return;
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
755 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
756 if (context->cmd_recv_wait) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
757 context->current_cmd_nibble = 0;
2139
11a3d5b00a66 Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
758 gate_array[GAO_CDD_CTRL] |= BIT_DTS;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
759 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
760 context->cmd_recv_wait = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
761 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
762 context->cmd_recv_pending = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
763 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
764 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
765
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
766 void cdd_hock_enabled(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
767 {
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
768 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
769 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
770 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
771 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
772 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
773 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
774
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
775 void cdd_hock_disabled(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
776 {
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
777 context->last_sector_cycle = CYCLE_NEVER;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
778 context->next_int_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
779 context->last_nibble_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
780 context->current_status_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
781 context->current_cmd_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
782 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
783
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
784 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
785 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
786 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
787 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
788 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
789 } 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
790 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
791 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
792 if (context->next_int_cycle != CYCLE_NEVER) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
793 context->next_int_cycle -= deduction;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
794 }
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
795 if (context->last_sector_cycle != CYCLE_NEVER) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
796 if (context->last_sector_cycle > cd_deduction) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
797 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
798 } else {
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
799 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
800 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
801 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
802 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
803 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
804 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
805 } 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
806 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
807 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
808 }
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
809 context->next_byte_cycle -= cd_deduction;
2116
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
810 if (context->next_subcode_cycle != CYCLE_NEVER) {
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
811 context->next_subcode_cycle -= cd_deduction;
cd057d6fe030 Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents: 2115
diff changeset
812 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
813 }
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
814
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
815 void cdd_mcu_serialize(cdd_mcu *context, serialize_buffer *buf)
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
816 {
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
817 save_int32(buf, context->cycle);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
818 save_int32(buf, context->next_int_cycle);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
819 save_int32(buf, context->next_subcode_int_cycle);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
820 save_int32(buf, context->last_sector_cycle);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
821 save_int32(buf, context->last_nibble_cycle);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
822 save_int32(buf, context->next_byte_cycle);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
823 save_int32(buf, context->next_subcode_cycle);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
824 save_int8(buf, context->current_status_nibble);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
825 save_int8(buf, context->current_cmd_nibble);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
826 save_int16(buf, context->current_sector_byte);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
827 save_int8(buf, context->current_subcode_byte);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
828 save_int8(buf, context->current_subcode_dest);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
829 save_int32(buf, context->head_pba);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
830 save_int32(buf, context->seek_pba);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
831 save_int32(buf, context->pause_pba);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
832 save_int32(buf, context->coarse_seek);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
833 save_buffer8(buf, (uint8_t *)&context->cmd_buffer, sizeof(context->cmd_buffer));
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
834 save_buffer8(buf, (uint8_t *)&context->status_buffer, sizeof(context->status_buffer));
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
835 save_int8(buf, context->requested_format);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
836 save_int8(buf, context->status);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
837 save_int8(buf, context->error_status);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
838 save_int8(buf, context->requested_track);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
839 save_int8(buf, context->cmd_recv_wait);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
840 save_int8(buf, context->cmd_recv_pending);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
841 save_int8(buf, context->int_pending);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
842 save_int8(buf, context->subcode_int_pending);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
843 save_int8(buf, context->toc_valid);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
844 save_int8(buf, context->first_cmd_received);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
845 save_int8(buf, context->seeking);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
846 save_int8(buf, context->in_fake_pregap);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
847 }
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
848
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
849 static int sign_extend8(uint8_t value)
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
850 {
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
851 if (value & 0x80) {
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
852 return value | 0xFFFFFF00;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
853 } else {
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
854 return value;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
855 }
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
856 }
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
857
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
858 static int sign_extend16(uint16_t value)
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
859 {
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
860 if (value & 0x8000) {
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
861 return value | 0xFFFF0000;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
862 } else {
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
863 return value;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
864 }
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
865 }
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
866
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
867 void cdd_mcu_deserialize(deserialize_buffer *buf, void *vcontext)
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
868 {
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
869 cdd_mcu *context = vcontext;
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
870 context->cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
871 context->next_int_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
872 context->next_subcode_int_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
873 context->last_sector_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
874 context->last_nibble_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
875 context->next_byte_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
876 context->next_subcode_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
877 context->current_status_nibble = sign_extend8(load_int8(buf));
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
878 context->current_cmd_nibble = sign_extend8(load_int8(buf));
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
879 context->current_sector_byte = sign_extend16(load_int16(buf));
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
880 context->current_subcode_byte = sign_extend8(load_int8(buf));
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
881 context->current_subcode_dest = sign_extend8(load_int8(buf));
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
882 context->head_pba = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
883 context->seek_pba = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
884 context->pause_pba = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
885 context->coarse_seek = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
886 load_buffer8(buf, (uint8_t *)&context->cmd_buffer, sizeof(context->cmd_buffer));
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
887 load_buffer8(buf, (uint8_t *)&context->status_buffer, sizeof(context->status_buffer));
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
888 context->requested_format = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
889 context->status = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
890 context->error_status = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
891 context->requested_track = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
892 context->cmd_recv_wait = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
893 context->cmd_recv_pending = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
894 context->int_pending = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
895 context->subcode_int_pending = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
896 context->toc_valid = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
897 context->first_cmd_received = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
898 context->seeking = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
899 context->in_fake_pregap = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2270
diff changeset
900 }