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annotate cdd_mcu.h @ 2155:6f58af5bd6fa

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Add ROM DB entry for NHL 96 as it is missing SRAM info in the header
author Michael Pavone <pavone@retrodev.com>
date Thu, 07 Apr 2022 00:49:58 -0700
parents c3ee42c89b27
children 9ead0fe69d9b
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1 #ifndef CDD_MCU_H_
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2 #define CDD_MCU_H_
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3 #include "system.h"
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4 #include "lc8951.h"
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5 #include "cdd_fader.h"
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6
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7 typedef enum {
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8 SF_ABSOLUTE,
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9 SF_RELATIVE,
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10 SF_TRACK,
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11 SF_TOCO,
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12 SF_TOCT,
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13 SF_TOCN,
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14 SF_E,
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15 SF_NOTREADY = 0xF
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16 } status_format;
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17
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18 typedef enum {
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19 CMD_NOP,
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20 CMD_STOP,
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21 CMD_REPORT_REQUEST,
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22 CMD_READ,
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23 CMD_SEEK,
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24 CMD_INVALID,
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25 CMD_PAUSE,
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26 CMD_PLAY,
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27 CMD_FFWD,
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28 CMD_RWD,
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29 CMD_TRACK_SKIP,
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30 CMD_TRACK_CUE,
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31 CMD_DOOR_CLOSE,
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32 CMD_DOOR_OPEN
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33 } host_cmd;
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34
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35 typedef enum {
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36 DS_STOP,
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37 DS_PLAY,
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38 DS_SEEK,
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39 DS_SCAN,
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40 DS_PAUSE,
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41 DS_DOOR_OPEN,
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42 DS_SUM_ERROR,
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43 DS_CMD_ERROR,
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44 DS_FUNC_ERROR,
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45 DS_TOC_READ,
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46 DS_TRACKING,
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47 DS_NO_DISC,
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48 DS_DISC_LEADOUT,
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49 DS_DISC_LEADIN,
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50 DS_TRAY_MOVING,
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51 } drive_status;
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52
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53
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54 typedef struct {
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55 uint8_t status;
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56 uint8_t format;
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57 union {
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58 struct {
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59 uint8_t min_high;
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60 uint8_t min_low;
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61 uint8_t sec_high;
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62 uint8_t sec_low;
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63 uint8_t frame_high;
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64 uint8_t frame_low;
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65 uint8_t flags;
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66 } time;
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67 struct {
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68 uint8_t track_high;
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69 uint8_t track_low;
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70 uint8_t padding0;
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71 uint8_t padding1;
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72 uint8_t control;
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73 uint8_t adr;
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74 uint8_t flags;
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75 } track;
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76 struct {
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77 uint8_t first_track_high;
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78 uint8_t first_track_low;
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79 uint8_t last_track_high;
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80 uint8_t last_track_low;
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81 uint8_t version;
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82 uint8_t padding;
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83 uint8_t flags;
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84 } toct;
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85 struct {
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86 uint8_t min_high;
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87 uint8_t min_low;
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88 uint8_t sec_high;
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89 uint8_t sec_low;
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90 uint8_t frame_high;
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91 uint8_t frame_low;
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92 uint8_t track_low;
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93 } tocn;
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94 struct {
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95 } error;
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96 } b;
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97 uint8_t checksum;
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98 } cdd_status;
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99
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100 typedef struct {
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101 uint8_t cmd_type;
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102 uint8_t must_be_zero;
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103 union {
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104 struct {
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105 uint8_t min_high;
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106 uint8_t min_low;
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107 uint8_t sec_high;
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108 uint8_t sec_low;
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109 uint8_t frame_high;
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110 uint8_t frame_low;
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111 } time;
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112 struct {
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113 uint8_t padding;
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114 uint8_t status_type;
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115 uint8_t track_high;
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116 uint8_t track_low;
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117 } format;
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118 struct {
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119 uint8_t padding;
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120 uint8_t direction;
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121 uint8_t tracks_highest;
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122 uint8_t tracks_midhigh;
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123 uint8_t tracks_midlow;
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124 uint8_t tracks_lowest;
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125 } skip;
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126 struct {
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127 uint8_t track_high;
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128 uint8_t track_low;
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129 } track;
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130 } b;
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131 uint8_t padding;
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132 uint8_t checksum;
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133 } cdd_cmd;
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134
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135 typedef struct {
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136 system_media *media;
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137 uint32_t cycle; //this is in CD block CLKS
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138 uint32_t next_int_cycle; //this is in SCD MCLKS
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139 uint32_t next_subcode_int_cycle;
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140 uint32_t last_sector_cycle;
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141 uint32_t last_nibble_cycle;
2089
0db3af42dd72 Fix some byte order stuff for audio tracks
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parents: 2080
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142 uint32_t next_byte_cycle;
2116
cd057d6fe030 Initial stab at subcode emulation
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143 uint32_t next_subcode_cycle;
2061
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144 int current_status_nibble;
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145 int current_cmd_nibble;
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
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parents: 2061
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146 int current_sector_byte;
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147 int current_subcode_byte;
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148 int current_subcode_dest;
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149 uint32_t head_pba;
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150 uint32_t seek_pba;
2095
c732dcc9c61b Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents: 2089
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151 uint32_t pause_pba;
2152
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
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parents: 2116
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152 uint32_t coarse_seek;
2061
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153 cdd_status status_buffer;
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154 cdd_cmd cmd_buffer;
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155 status_format requested_format;
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156 drive_status status;
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157 drive_status error_status;
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158 uint8_t requested_track;
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159 uint8_t cmd_recv_wait;
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160 uint8_t cmd_recv_pending;
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161 uint8_t int_pending;
2116
cd057d6fe030 Initial stab at subcode emulation
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parents: 2095
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162 uint8_t subcode_int_pending;
2061
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163 uint8_t toc_valid;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
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164 uint8_t first_cmd_received;
2061
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165 uint8_t seeking;
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
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parents: 2061
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166 uint8_t in_fake_pregap;
2061
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167 } cdd_mcu;
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168
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169 void cdd_mcu_init(cdd_mcu *context, system_media *media);
2080
bafb757e1cd2 Implement CD audio
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parents: 2065
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170 void cdd_mcu_run(cdd_mcu *context, uint32_t cycle, uint16_t *gate_array, lc8951 *cdc, cdd_fader *fader);
2061
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171 void cdd_hock_enabled(cdd_mcu *context);
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172 void cdd_hock_disabled(cdd_mcu *context);
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173 void cdd_mcu_start_cmd_recv(cdd_mcu *context, uint16_t *gate_array);
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174 void cdd_mcu_adjust_cycle(cdd_mcu *context, uint32_t deduction);
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175
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176 #endif //CD_MCU_H_