Mercurial > repos > blastem
annotate cdd_mcu.c @ 2229:f699f9d500b4
Fix build
author | Michael Pavone <pavone@retrodev.com> |
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date | Mon, 05 Sep 2022 23:48:17 -0700 |
parents | a8af8d898a7c |
children | 5083bc84fd84 |
rev | line source |
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2215
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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 // 1.3 m = 1300 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 // 17.3333 mm "typical" length of a sector |
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29 // ~8.7 sectors per track in lead-in area |
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30 #define LEADIN_SECTORS 10875 |
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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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67 #define BIT_MUTE 0x100 | |
68 #define BIT_HOCK 0x0004 | |
69 #define BIT_DRS 0x0002 | |
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 17.3333f |
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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 // ~ 21 sectors per physical track at edge |
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89 // ~8 sectors per physical track at start of lead-in |
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90 #define COARSE_SEEK_TRACKS 57 //estimate based on seek test |
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91 static void handle_seek(cdd_mcu *context) |
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92 { |
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93 uint32_t old_coarse = context->coarse_seek; |
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94 if (context->seeking) { |
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95 if (context->seek_pba == context->head_pba) { |
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96 context->seeking = 0; |
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97 context->coarse_seek = 0; |
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98 if (context->status == DS_PAUSE) { |
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99 context->pause_pba = context->head_pba; |
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100 } |
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101 } else { |
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102 //TODO: better estimate of sectors per track at current head location |
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103 //TODO: drive will periodically lose tracking when seeking which slows |
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104 //things down from this ideal speed I'm curently estimating |
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105 float circumference = (MAX_CIRCUMFERENCE-MIN_CIRCUMFERENCE) * ((float)context->head_pba) / (74 * 60 * SECTORS_PER_SECOND) + MIN_CIRCUMFERENCE; |
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106 float sectors_per_track = circumference / SECTOR_LENGTH; |
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107 uint32_t max_seek = sectors_per_track * COARSE_SEEK_TRACKS; |
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108 uint32_t min_seek = sectors_per_track; |
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109 |
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110 uint32_t old_pba = context->head_pba; |
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111 if (context->seek_pba > context->head_pba) { |
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112 uint32_t seek_amount; |
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113 for (seek_amount = max_seek; seek_amount >= min_seek; seek_amount >>= 1) |
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114 { |
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115 if (context->seek_pba - context->head_pba >= seek_amount) { |
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116 break; |
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117 } |
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118 } |
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119 if (seek_amount >= min_seek) { |
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120 context->head_pba += seek_amount; |
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|
121 } else { |
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|
122 context->head_pba++; |
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diff
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|
123 } |
2067
f22e04b69272
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parents:
2065
diff
changeset
|
124 } else { |
2141
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|
125 uint32_t seek_amount; |
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|
126 for (seek_amount = max_seek; seek_amount >= min_seek; seek_amount >>= 1) |
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|
127 { |
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|
128 if (context->head_pba - context->seek_pba >= seek_amount) { |
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129 break; |
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|
130 } |
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|
131 } |
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|
132 if (seek_amount >= min_seek) { |
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|
133 context->head_pba -= seek_amount; |
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|
134 } else if (context->head_pba >= min_seek){ |
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|
135 context->head_pba -= min_seek; |
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|
136 } else { |
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|
137 context->head_pba = 0; |
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diff
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|
138 } |
2064
91e4d2fe5cd9
Get CDD working well enough to get into BIOS CD player
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2062
diff
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|
139 } |
2152
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2142
diff
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|
140 if (context->head_pba != old_pba + 1) { |
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|
141 context->coarse_seek++; |
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|
142 } else { |
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diff
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|
143 context->coarse_seek = 0; |
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diff
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|
144 } |
2061
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Implemented basic TOC functionality of CDD MCU
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diff
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|
145 } |
7c1760b5b3e5
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|
146 } |
2152
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diff
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|
147 if (old_coarse && !context->coarse_seek) { |
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|
148 } |
2061
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|
149 } |
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|
150 |
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|
151 static void lba_to_status(cdd_mcu *context, uint32_t lba) |
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|
152 { |
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|
153 uint32_t seconds = lba / 75; |
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|
154 uint32_t frames = lba % 75; |
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diff
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|
155 uint32_t minutes = seconds / 60; |
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|
156 seconds = seconds % 60; |
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diff
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|
157 context->status_buffer.b.time.min_high = minutes / 10; |
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|
158 context->status_buffer.b.time.min_low = minutes % 10; |
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diff
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|
159 context->status_buffer.b.time.sec_high = seconds / 10; |
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diff
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|
160 context->status_buffer.b.time.sec_low = seconds % 10; |
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diff
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|
161 context->status_buffer.b.time.frame_high = frames / 10; |
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diff
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|
162 context->status_buffer.b.time.frame_low = frames % 10; |
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parents:
diff
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|
163 } |
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diff
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|
164 |
2080 | 165 static void update_status(cdd_mcu *context, uint16_t *gate_array) |
2061
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diff
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|
166 { |
2080 | 167 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
|
168 uint32_t prev_pba = context->head_pba; |
2061
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parents:
diff
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|
169 switch (context->status) |
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diff
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|
170 { |
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diff
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|
171 case DS_PLAY: |
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parents:
diff
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|
172 handle_seek(context); |
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diff
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|
173 if (!context->seeking) { |
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parents:
diff
changeset
|
174 context->head_pba++; |
2081
cfd53c94fffb
Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents:
2080
diff
changeset
|
175 } |
cfd53c94fffb
Initial stab at RF5C164 emulation
Michael Pavone <pavone@retrodev.com>
parents:
2080
diff
changeset
|
176 if (context->head_pba >= LEADIN_SECTORS) { |
2080 | 177 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
|
178 if (!context->seeking && context->media->tracks[track].type == TRACK_AUDIO) { |
2080 | 179 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE; |
180 } | |
2061
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Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
181 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
182 break; |
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Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
183 case DS_PAUSE: |
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Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
184 handle_seek(context); |
2095
c732dcc9c61b
Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
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2089
diff
changeset
|
185 if (!context->seeking) { |
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Better simulation of CDD pause behavior
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parents:
2089
diff
changeset
|
186 context->head_pba++; |
2152
c3ee42c89b27
More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
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parents:
2142
diff
changeset
|
187 //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
|
188 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
|
189 float sectors_per_track = circumference / SECTOR_LENGTH; |
c3ee42c89b27
More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
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parents:
2142
diff
changeset
|
190 //TODO: check the exact behavior during pause on hardware |
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parents:
2142
diff
changeset
|
191 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
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parents:
2142
diff
changeset
|
192 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
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parents:
2142
diff
changeset
|
193 context->head_pba = context->pause_pba - diff; |
2095
c732dcc9c61b
Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
194 if (context->head_pba < LEADIN_SECTORS) { |
c732dcc9c61b
Better simulation of CDD pause behavior
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parents:
2089
diff
changeset
|
195 context->head_pba = LEADIN_SECTORS; |
c732dcc9c61b
Better simulation of CDD pause behavior
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parents:
2089
diff
changeset
|
196 } |
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Better simulation of CDD pause behavior
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parents:
2089
diff
changeset
|
197 } |
c732dcc9c61b
Better simulation of CDD pause behavior
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parents:
2089
diff
changeset
|
198 } |
2084
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
199 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
|
200 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
|
201 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
202 break; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
203 case DS_TOC_READ: |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
204 handle_seek(context); |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
205 if (!context->seeking) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
206 context->head_pba++; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
207 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
|
208 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
|
209 context->toc_valid = 1; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
210 context->seeking = 1; |
2095
c732dcc9c61b
Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
211 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
|
212 context->status = DS_PAUSE; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
213 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
214 |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
215 } else { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
216 context->status = DS_NO_DISC; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
217 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
218 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
219 break; |
2084
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
220 case DS_TRACKING: |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
221 handle_seek(context); |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
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parents:
2081
diff
changeset
|
222 if (!context->seeking) { |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
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parents:
2081
diff
changeset
|
223 context->status = DS_PAUSE; |
2095
c732dcc9c61b
Better simulation of CDD pause behavior
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parents:
2089
diff
changeset
|
224 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
|
225 } |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
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parents:
2081
diff
changeset
|
226 if (context->head_pba >= LEADIN_SECTORS) { |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
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parents:
2081
diff
changeset
|
227 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
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parents:
2081
diff
changeset
|
228 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
|
229 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE; |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
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parents:
2081
diff
changeset
|
230 } |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
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parents:
2081
diff
changeset
|
231 } |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
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parents:
2081
diff
changeset
|
232 break; |
2061
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Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
233 } |
2124
ad346054ca78
Return "not ready" status sometimes when seeking. Fixes issues in multiple games
Michael Pavone <pavone@retrodev.com>
parents:
2122
diff
changeset
|
234 uint8_t force_not_ready = 0; |
2152
c3ee42c89b27
More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
Michael Pavone <pavone@retrodev.com>
parents:
2142
diff
changeset
|
235 if (context->coarse_seek && !(context->coarse_seek % 15)) { |
c3ee42c89b27
More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking
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parents:
2142
diff
changeset
|
236 //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
|
237 //BIOS depends on getting a not ready status during seeking to clear certain state |
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238 force_not_ready = context->status_buffer.format != SF_NOTREADY; |
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239 } |
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240 if (context->first_cmd_received) { |
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241 switch (force_not_ready ? SF_NOTREADY : context->requested_format) |
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242 { |
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243 case SF_ABSOLUTE: |
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244 if (context->toc_valid && prev_pba >= LEADIN_SECTORS) { |
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245 lba_to_status(context, prev_pba - LEADIN_SECTORS); |
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246 context->status_buffer.format = SF_ABSOLUTE; |
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247 } else { |
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248 context->status_buffer.format = SF_NOTREADY; |
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249 } |
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250 break; |
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251 case SF_RELATIVE: |
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252 if (context->toc_valid && prev_pba >= LEADIN_SECTORS) { |
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253 uint32_t lba =prev_pba - LEADIN_SECTORS; |
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254 for (uint32_t i = 0; i < context->media->num_tracks; i++) |
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255 { |
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256 if (lba < context->media->tracks[i].end_lba) { |
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257 if (context->media->tracks[i].fake_pregap) { |
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258 if (lba > context->media->tracks[i].fake_pregap) { |
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259 lba -= context->media->tracks[i].fake_pregap; |
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260 } else { |
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261 //relative time counts down to 0 in pregap |
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262 lba = context->media->tracks[i].fake_pregap - lba; |
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263 break; |
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264 } |
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265 } |
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266 if (lba < context->media->tracks[i].start_lba) { |
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267 //relative time counts down to 0 in pregap |
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268 lba = context->media->tracks[i].start_lba - lba; |
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269 } else { |
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270 lba -= context->media->tracks[i].start_lba; |
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271 } |
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272 break; |
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273 } else if (context->media->tracks[i].fake_pregap) { |
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274 lba -= context->media->tracks[i].fake_pregap; |
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275 } |
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276 } |
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277 lba_to_status(context, lba); |
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278 context->status_buffer.format = SF_RELATIVE; |
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279 } else { |
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280 context->status_buffer.format = SF_NOTREADY; |
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281 } |
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282 break; |
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283 case SF_TRACK: |
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284 if (context->toc_valid && prev_pba >= LEADIN_SECTORS) { |
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285 uint32_t lba =prev_pba - LEADIN_SECTORS; |
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286 uint32_t i; |
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287 for (i = 0; i < context->media->num_tracks; i++) |
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288 { |
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289 if (lba < context->media->tracks[i].end_lba) { |
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290 if (context->media->tracks[i].fake_pregap) { |
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291 if (lba > context->media->tracks[i].fake_pregap) { |
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292 lba -= context->media->tracks[i].fake_pregap; |
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293 } else { |
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294 //relative time counts down to 0 in pregap |
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295 lba = context->media->tracks[i].fake_pregap - lba; |
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296 break; |
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297 } |
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298 } |
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299 if (lba < context->media->tracks[i].start_lba) { |
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300 //relative time counts down to 0 in pregap |
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301 lba = context->media->tracks[i].start_lba - lba; |
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302 } else { |
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303 lba -= context->media->tracks[i].start_lba; |
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304 } |
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305 break; |
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306 } else if (context->media->tracks[i].fake_pregap) { |
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307 lba -= context->media->tracks[i].fake_pregap; |
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308 } |
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309 } |
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310 context->status_buffer.b.track.track_high = (i + 1) / 10; |
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311 context->status_buffer.b.track.track_low = (i + 1) % 10; |
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312 if (context->media->tracks[i].type == TRACK_DATA) { |
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313 context->status_buffer.b.track.control = 4; |
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314 } else { |
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315 //TODO: pre-emphasis flag |
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316 //TODO: copy permitted flag |
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317 context->status_buffer.b.track.control = 0; |
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318 } |
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319 context->status_buffer.b.track.adr = 1; |
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320 context->status_buffer.format = SF_TRACK; |
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321 } else { |
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322 context->status_buffer.format = SF_NOTREADY; |
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323 } |
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324 break; |
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325 case SF_TOCO: |
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326 if (context->toc_valid) { |
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327 uint32_t total_fake_pregap = 0; |
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328 for (uint32_t i = 0; i < context->media->num_tracks; i++) |
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329 { |
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330 total_fake_pregap += context->media->tracks[i].fake_pregap; |
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331 } |
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332 lba_to_status(context, context->media->tracks[context->media->num_tracks - 1].end_lba + total_fake_pregap); |
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333 context->status_buffer.format = SF_TOCO; |
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334 } else { |
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335 context->status_buffer.format = SF_NOTREADY; |
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336 } |
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337 break; |
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338 case SF_TOCT: |
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339 if (context->toc_valid) { |
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340 context->status_buffer.b.toct.first_track_high = 0; |
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341 context->status_buffer.b.toct.first_track_low = 1; |
2073
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342 context->status_buffer.b.toct.last_track_high = (context->media->num_tracks) / 10; |
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changeset
|
343 context->status_buffer.b.toct.last_track_low = (context->media->num_tracks) % 10; |
2064
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|
344 context->status_buffer.b.toct.version = 0; |
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|
345 context->status_buffer.format = SF_TOCT; |
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|
346 } else { |
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|
347 context->status_buffer.format = SF_NOTREADY; |
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|
348 } |
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|
349 break; |
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diff
changeset
|
350 case SF_TOCN: |
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diff
changeset
|
351 if (context->toc_valid) { |
2073
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Fix some cycle adjustment stuff and an off-by one on hte TOCT response
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diff
changeset
|
352 if (context->requested_track > context->media->num_tracks) { |
c69e42444f96
Fix some cycle adjustment stuff and an off-by one on hte TOCT response
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diff
changeset
|
353 printf("track number %d is bad\n", context->requested_track); |
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Fix some cycle adjustment stuff and an off-by one on hte TOCT response
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diff
changeset
|
354 exit(0); |
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Fix some cycle adjustment stuff and an off-by one on hte TOCT response
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diff
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|
355 } |
2064
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diff
changeset
|
356 uint32_t lba = context->media->tracks[context->requested_track - 1].start_lba; |
2065
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Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
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|
357 for (uint32_t i = 0; i < context->requested_track; i++) { |
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Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
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changeset
|
358 lba += context->media->tracks[i].fake_pregap; |
2064
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diff
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|
359 } |
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diff
changeset
|
360 lba_to_status(context, lba); |
2065
02a9846668d1
Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
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diff
changeset
|
361 if (context->media->tracks[context->requested_track - 1].type == TRACK_DATA) { |
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Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
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diff
changeset
|
362 context->status_buffer.b.tocn.frame_low |= 0x80; |
02a9846668d1
Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
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parents:
2064
diff
changeset
|
363 } |
2064
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parents:
2062
diff
changeset
|
364 context->status_buffer.b.tocn.track_low = context->requested_track % 10; |
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Get CDD working well enough to get into BIOS CD player
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diff
changeset
|
365 context->status_buffer.format = SF_TOCN; |
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diff
changeset
|
366 } else { |
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|
367 context->status_buffer.format = SF_NOTREADY; |
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|
368 } |
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|
369 break; |
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370 case SF_NOTREADY: |
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diff
changeset
|
371 memset(&context->status_buffer, 0, sizeof(context->status_buffer) - 1); |
2061
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parents:
diff
changeset
|
372 context->status_buffer.format = SF_NOTREADY; |
2064
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373 break; |
2061
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|
374 } |
2064
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|
375 if (context->error_status == DS_STOP) { |
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376 if (context->requested_format >= SF_TOCO && context->requested_format <= SF_TOCN) { |
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diff
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|
377 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>
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2081
diff
changeset
|
378 } else if (context->seeking && context->status != DS_TRACKING) { |
2065
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Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
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|
379 context->status_buffer.status = DS_SEEK; |
2064
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|
380 } else { |
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|
381 context->status_buffer.status = context->status; |
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changeset
|
382 } |
2061
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changeset
|
383 } else { |
2064
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diff
changeset
|
384 context->status_buffer.status = context->error_status; |
2061
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Implemented basic TOC functionality of CDD MCU
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diff
changeset
|
385 context->status_buffer.format = SF_NOTREADY; |
2064
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|
386 context->error_status = DS_STOP; |
2061
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Implemented basic TOC functionality of CDD MCU
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|
387 } |
2064
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diff
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|
388 if (context->requested_format != SF_TOCN) { |
2080 | 389 context->status_buffer.b.time.flags = !!(gate_array[GAO_CDD_CTRL] & BIT_MUTE); //TODO: populate these |
2061
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Implemented basic TOC functionality of CDD MCU
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diff
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|
390 } |
2064
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|
391 } else { |
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diff
changeset
|
392 // Did not receive our first command so just send zeroes |
2061
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|
393 memset(&context->status_buffer, 0, sizeof(context->status_buffer) - 1); |
7c1760b5b3e5
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diff
changeset
|
394 } |
7c1760b5b3e5
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diff
changeset
|
395 context->status_buffer.checksum = checksum((uint8_t *)&context->status_buffer); |
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Implemented basic TOC functionality of CDD MCU
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diff
changeset
|
396 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
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2061
diff
changeset
|
397 printf("CDD Status %X%X.%X%X%X%X%X%X.%X%X\n", |
2061
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Implemented basic TOC functionality of CDD MCU
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diff
changeset
|
398 context->status_buffer.status, context->status_buffer.format, |
7c1760b5b3e5
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diff
changeset
|
399 context->status_buffer.b.time.min_high, context->status_buffer.b.time.min_low, |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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diff
changeset
|
400 context->status_buffer.b.time.sec_high, context->status_buffer.b.time.sec_low, |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
401 context->status_buffer.b.time.frame_high, context->status_buffer.b.time.frame_low, |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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diff
changeset
|
402 context->status_buffer.b.time.flags, context->status_buffer.checksum |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
403 ); |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
404 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
405 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
406 |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
407 static void run_command(cdd_mcu *context) |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
408 { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
409 uint8_t check = checksum((uint8_t*)&context->cmd_buffer); |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
410 if (check != context->cmd_buffer.checksum) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
411 context->error_status = DS_SUM_ERROR; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
412 return; |
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 if (context->cmd_buffer.must_be_zero) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
415 context->error_status = DS_CMD_ERROR; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
416 return; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
417 } |
2064
91e4d2fe5cd9
Get CDD working well enough to get into BIOS CD player
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parents:
2062
diff
changeset
|
418 context->first_cmd_received = 1; |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
419 switch (context->cmd_buffer.cmd_type) |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
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parents:
diff
changeset
|
420 { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
421 case CMD_NOP: |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
422 break; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
423 case CMD_STOP: |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
424 puts("CDD CMD: STOP"); |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
425 context->status = DS_STOP; |
2064
91e4d2fe5cd9
Get CDD working well enough to get into BIOS CD player
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2062
diff
changeset
|
426 context->requested_format = SF_ABSOLUTE; |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
427 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
|
428 case CMD_READ: |
07ed42bd7b4c
Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
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parents:
2061
diff
changeset
|
429 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
|
430 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
|
431 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
|
432 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
|
433 } |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
434 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
|
435 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
|
436 } |
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 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
|
438 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
|
439 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
|
440 } |
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 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
|
442 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
|
443 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
|
444 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
|
445 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
|
446 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
|
447 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
|
448 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
|
449 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
|
450 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
|
451 ); |
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
|
452 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
|
453 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
|
454 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
|
455 } |
2141
793715149f16
More accurate seek emulation
Michael Pavone <pavone@retrodev.com>
parents:
2139
diff
changeset
|
456 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
|
457 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
|
458 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
|
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 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
461 case CMD_REPORT_REQUEST: |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
462 switch (context->cmd_buffer.b.format.status_type) |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
463 { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
464 case SF_ABSOLUTE: |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
465 case SF_RELATIVE: |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
466 case SF_TRACK: |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
467 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
|
468 break; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
469 case SF_TOCO: |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
470 if (context->toc_valid) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
471 context->requested_format = SF_TOCO; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
472 } else { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
473 context->error_status = DS_CMD_ERROR; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
474 context->requested_format = SF_ABSOLUTE; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
475 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
476 break; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
477 case SF_TOCT: |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
478 if (context->toc_valid) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
479 if (context->status == DS_STOP) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
480 context->status = DS_TOC_READ; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
481 context->seeking = 1; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
482 context->seek_pba = 0; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
483 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
484 } else { |
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 context->requested_format = SF_TOCT; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
490 break; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
491 case SF_TOCN: |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
492 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
|
493 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
|
494 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
|
495 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
|
496 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
|
497 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
|
498 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
499 context->status = DS_TOC_READ; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
500 context->seeking = 1; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
501 context->seek_pba = 0; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
502 context->requested_format = SF_TOCN; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
503 break; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
504 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
505 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
|
506 break; |
2067
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
507 case CMD_PAUSE: |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
508 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
|
509 context->error_status = DS_CMD_ERROR; |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
510 break; |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
511 } |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
512 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
|
513 context->requested_format = SF_ABSOLUTE; |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
514 } |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
515 if (!context->toc_valid) { |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
516 context->error_status = DS_CMD_ERROR; |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
517 break; |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
518 } |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
519 if (context->status == DS_STOP) { |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
520 context->seeking = 1; |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
521 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
|
522 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
|
523 } else { |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
524 puts("CDD CMD: PAUSE"); |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
525 } |
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
526 context->status = DS_PAUSE; |
2095
c732dcc9c61b
Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
527 if (!context->seeking) { |
c732dcc9c61b
Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
528 context->pause_pba = context->head_pba; |
c732dcc9c61b
Better simulation of CDD pause behavior
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
529 } |
2067
f22e04b69272
More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents:
2065
diff
changeset
|
530 break; |
2084
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
531 case CMD_PLAY: |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
532 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
|
533 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
|
534 break; |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
535 } |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
536 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
|
537 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
|
538 } |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
539 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
|
540 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
|
541 break; |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
542 } |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
543 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
|
544 context->seeking = 1; |
2100
539450d905b3
Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents:
2096
diff
changeset
|
545 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
|
546 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
|
547 } else { |
2100
539450d905b3
Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents:
2096
diff
changeset
|
548 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
|
549 } |
2100
539450d905b3
Fix CDD PLAY command and CDD fader sample alignment
Michael Pavone <pavone@retrodev.com>
parents:
2096
diff
changeset
|
550 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
|
551 break; |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
552 //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
|
553 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
|
554 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
|
555 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
|
556 break; |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
557 } |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
558 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
|
559 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
|
560 } |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
561 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
|
562 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
|
563 break; |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
564 } |
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 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
|
567 | 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
|
568 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
|
569 to_skip = -to_skip; |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
570 } |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
571 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
|
572 //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
|
573 //~ 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
|
574 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
|
575 context->seeking = 1; |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
576 } |
c9d3b8e1ea56
Implement a couple more CDD commands force CDDA mute when seeking
Michael Pavone <pavone@retrodev.com>
parents:
2081
diff
changeset
|
577 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
|
578 break; |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
579 default: |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
580 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
|
581 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
582 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
583 |
2080 | 584 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
|
585 { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
586 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
|
587 if (!(gate_array[GAO_CDD_CTRL] & BIT_HOCK)) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
588 //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
|
589 //assum it's actually the clock for now |
2080 | 590 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
|
591 if (context->cycle >= context->next_byte_cycle) { |
2080 | 592 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
|
593 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
|
594 context->next_byte_cycle += BYTE_CLOCKS; |
2080 | 595 } |
596 } | |
597 gate_array[GAO_CDD_CTRL] |= BIT_MUTE; | |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
598 return; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
599 } |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
600 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
|
601 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
|
602 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
|
603 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
|
604 } else if (!context->current_status_nibble) { |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
605 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
|
606 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
|
607 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
|
608 } |
2115
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 { |
e93ced356a21
Hopefully more accurate relative timing of CDD status and data reaching the CDC
Michael Pavone <pavone@retrodev.com>
parents:
2100
diff
changeset
|
610 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
|
611 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
612 uint32_t next_cmd_nibble = context->current_cmd_nibble >= 0 ? context->last_nibble_cycle + NIBBLE_CLOCKS : CYCLE_NEVER; |
2080 | 613 |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
614 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
|
615 { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
616 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
|
617 uint32_t old_coarse = context->coarse_seek; |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
618 context->last_sector_cycle = context->cycle; |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
619 next_subcode = context->cycle + SECTOR_CLOCKS; |
2080 | 620 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
|
621 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
|
622 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
|
623 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
|
624 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
625 context->current_status_nibble = 0; |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
626 if (context->next_subcode_int_cycle != CYCLE_NEVER) { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
627 context->subcode_int_pending = 1; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
628 } |
2142
d9151d0894c7
Fix some CD-ROM emulation issues
Michael Pavone <pavone@retrodev.com>
parents:
2141
diff
changeset
|
629 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
|
630 context->current_sector_byte = 0; |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
631 context->current_subcode_byte = 0; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
632 context->next_subcode_cycle = context->cycle; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
633 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
|
634 } else { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
635 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
|
636 } |
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
|
637 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
|
638 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
|
639 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
|
640 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
|
641 } |
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 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
643 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
644 if (context->cycle >= next_nibble) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
645 if (context->current_status_nibble == sizeof(cdd_status)) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
646 context->current_status_nibble = -1; |
2139
11a3d5b00a66
Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents:
2130
diff
changeset
|
647 gate_array[GAO_CDD_CTRL] &= ~BIT_DRS; |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
648 if (context->cmd_recv_pending) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
649 context->cmd_recv_pending = 0; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
650 context->current_cmd_nibble = 0; |
2139
11a3d5b00a66
Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents:
2130
diff
changeset
|
651 gate_array[GAO_CDD_CTRL] |= BIT_DTS; |
2075
983f57d08eff
Fix a couple of CDD bugs
Michael Pavone <pavone@retrodev.com>
parents:
2073
diff
changeset
|
652 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS; |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
653 } else { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
654 context->cmd_recv_wait = 1; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
655 } |
2075
983f57d08eff
Fix a couple of CDD bugs
Michael Pavone <pavone@retrodev.com>
parents:
2073
diff
changeset
|
656 next_nibble = CYCLE_NEVER; |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
657 } else { |
2139
11a3d5b00a66
Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents:
2130
diff
changeset
|
658 gate_array[GAO_CDD_CTRL] |= BIT_DRS; |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
659 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
|
660 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
|
661 if (context->current_status_nibble & 1) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
662 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
|
663 } else { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
664 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
|
665 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
666 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
|
667 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
|
668 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
|
669 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
|
670 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
|
671 } 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
|
672 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
|
673 } |
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 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
675 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
676 context->current_status_nibble++; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
677 context->last_nibble_cycle = context->cycle; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
678 next_nibble = context->cycle + NIBBLE_CLOCKS; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
679 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
680 } else if (context->cycle >= next_cmd_nibble) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
681 if (context->current_cmd_nibble == sizeof(cdd_cmd)) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
682 next_cmd_nibble = CYCLE_NEVER; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
683 context->current_cmd_nibble = -1; |
2139
11a3d5b00a66
Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents:
2130
diff
changeset
|
684 gate_array[GAO_CDD_CTRL] &= ~BIT_DTS; |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
685 run_command(context); |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
686 } else { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
687 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
|
688 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
|
689 ((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
|
690 context->current_cmd_nibble++; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
691 context->last_nibble_cycle = context->cycle; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
692 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
693 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
694 } |
2089
0db3af42dd72
Fix some byte order stuff for audio tracks
Michael Pavone <pavone@retrodev.com>
parents:
2084
diff
changeset
|
695 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
|
696 if (context->current_sector_byte >= 0 && (!fader->byte_counter || context->current_sector_byte)) { |
2080 | 697 uint8_t byte = context->media->read(context->media, context->current_sector_byte); |
698 lc8951_write_byte(cdc, cd_block_to_mclks(context->cycle), context->current_sector_byte++, byte); | |
699 cdd_fader_data(fader, gate_array[GAO_CDD_CTRL] & BIT_MUTE ? 0 : byte); | |
700 } 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
|
701 lc8951_write_byte(cdc, cd_block_to_mclks(context->cycle), 0, 0); |
2080 | 702 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
|
703 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
|
704 next_subcode += BYTE_CLOCKS; |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
705 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
|
706 } |
2080 | 707 } |
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
|
708 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
|
709 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
|
710 } |
2089
0db3af42dd72
Fix some byte order stuff for audio tracks
Michael Pavone <pavone@retrodev.com>
parents:
2084
diff
changeset
|
711 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
|
712 } |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
713 if (context->cycle >= context->next_subcode_cycle) { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
714 uint8_t byte; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
715 if (!context->current_subcode_byte) { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
716 byte = 0x9F; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
717 //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
|
718 context->current_subcode_dest &= 0x7E; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
719 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
|
720 } else if (context->current_subcode_byte == 1) { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
721 byte = 0xFD; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
722 } else { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
723 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
|
724 } |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
725 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
|
726 if (context->current_subcode_dest & 1) { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
727 gate_array[offset] &= 0xFF00; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
728 gate_array[offset] |= byte; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
729 } else { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
730 gate_array[offset] &= 0x00FF; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
731 gate_array[offset] |= byte << 8; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
732 } |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
733 context->current_subcode_byte++; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
734 if (context->current_subcode_byte == 98) { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
735 context->current_subcode_byte = 0; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
736 } else if (context->current_subcode_byte == 32) { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
737 gate_array[GAO_SUBCODE_ADDR] |= 0x80; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
738 } |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
739 context->current_subcode_dest++; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
740 context->current_subcode_dest &= 0x7F; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
741 context->next_subcode_cycle += SUBCODE_CLOCKS; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
742 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
743 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
744 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
745 |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
746 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
|
747 { |
2139
11a3d5b00a66
Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents:
2130
diff
changeset
|
748 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
|
749 return; |
11a3d5b00a66
Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents:
2130
diff
changeset
|
750 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
751 if (context->cmd_recv_wait) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
752 context->current_cmd_nibble = 0; |
2139
11a3d5b00a66
Fix DRS and DTS bits of CDD status
Michael Pavone <pavone@retrodev.com>
parents:
2130
diff
changeset
|
753 gate_array[GAO_CDD_CTRL] |= BIT_DTS; |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
754 context->last_nibble_cycle = context->cycle; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
755 context->cmd_recv_wait = 0; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
756 } else { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
757 context->cmd_recv_pending = 1; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
758 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
759 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
760 |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
761 void cdd_hock_enabled(cdd_mcu *context) |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
762 { |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
763 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
|
764 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
|
765 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
|
766 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
|
767 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
768 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
769 |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
770 void cdd_hock_disabled(cdd_mcu *context) |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
771 { |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
772 context->last_sector_cycle = CYCLE_NEVER; |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
773 context->next_int_cycle = CYCLE_NEVER; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
774 context->last_nibble_cycle = CYCLE_NEVER; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
775 context->current_status_nibble = -1; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
776 context->current_cmd_nibble = -1; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
777 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
778 |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
779 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
|
780 { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
781 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
|
782 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
|
783 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
|
784 } 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
|
785 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
|
786 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
787 if (context->next_int_cycle != CYCLE_NEVER) { |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
788 context->next_int_cycle -= deduction; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
789 } |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
790 if (context->last_sector_cycle != CYCLE_NEVER) { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
791 if (context->last_sector_cycle > cd_deduction) { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
792 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
|
793 } else { |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
794 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
|
795 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
796 } |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
797 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
|
798 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
|
799 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
|
800 } 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
|
801 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
|
802 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
803 } |
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
|
804 context->next_byte_cycle -= cd_deduction; |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
805 if (context->next_subcode_cycle != CYCLE_NEVER) { |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
806 context->next_subcode_cycle -= cd_deduction; |
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2115
diff
changeset
|
807 } |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
808 } |