Mercurial > repos > blastem

annotate cdd_mcu.c @ 2076:3f29e2726522

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added basic support for ISO images for games that only have a data track
author Michael Pavone <pavone@retrodev.com>
date Mon, 31 Jan 2022 22:07:18 -0800
parents 983f57d08eff
children c534a3199020
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1 #include "cdd_mcu.h"
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2 #include "backend.h"
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
3
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
4 #define SCD_MCLKS 50000000
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
5 #define CD_BLOCK_CLKS 16934400
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
6 #define CDD_MCU_DIVIDER 8
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
7 #define SECTOR_CLOCKS (CD_BLOCK_CLKS/75)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
8 #define NIBBLE_CLOCKS (CDD_MCU_DIVIDER * 77)
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
9 #define BYTE_CLOCKS (SECTOR_CLOCKS/2352) // 96
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
10
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
11 //lead in start max diameter 46 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
12 //program area start max diameter 50 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
13 //difference 4 mm = 4000 um
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
14 //radius difference 2 mm = 2000 um
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
15 //track pitch 1.6 um
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
16 //1250 physical tracks in between
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
17 //linear speed 1.2 m/s - 1.4 m/s
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
18 // 1.3 m = 1300 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
19 // circumference at 46 mm ~ 144.51 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
20 // circumference at 50 mm ~ 157.08 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
21 // avg is 150.795
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
22 // 75 sectors per second
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
23 // 17.3333 mm "typical" length of a sector
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
24 // ~8.7 sectors per track in lead-in area
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
25 #define LEADIN_SECTORS 10875
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
26
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
27 static uint32_t cd_block_to_mclks(uint32_t cycles)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
28 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
29 return ((uint64_t)cycles) * ((uint64_t)SCD_MCLKS) / ((uint64_t)CD_BLOCK_CLKS);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
30 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
31
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
32 static uint32_t mclks_to_cd_block(uint32_t cycles)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
33 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
34 return ((uint64_t)cycles) * ((uint64_t)CD_BLOCK_CLKS) / ((uint64_t)SCD_MCLKS);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
35 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
36
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
37 void cdd_mcu_init(cdd_mcu *context, system_media *media)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
38 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
39 context->next_int_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
40 context->last_subcode_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
41 context->last_nibble_cycle = CYCLE_NEVER;
2076
3f29e2726522 Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents: 2075
diff changeset
42 context->last_byte_cycle = CYCLE_NEVER;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
43 context->requested_format = SF_NOTREADY;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
44 context->media = media;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
45 context->current_status_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
46 context->current_cmd_nibble = -1;
2076
3f29e2726522 Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents: 2075
diff changeset
47 context->current_sector_byte = -1;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
48 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
49
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
50 enum {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
51 GAO_CDD_CTRL,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
52 GAO_CDD_STATUS,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
53 GAO_CDD_CMD = GAO_CDD_STATUS+5
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
54 };
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
55
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
56 static uint8_t checksum(uint8_t *vbuffer)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
57 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
58 uint8_t *buffer = vbuffer;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
59 uint8_t sum = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
60 for (int i = 0; i < 9; i++)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
61 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
62 sum += buffer[i];
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
63 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
64 return (~sum) & 0xF;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
65 }
2067
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
66 #define COARSE_SEEK 2200 //made up numbers
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
67 #define FINE_SEEK 10
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
68 static void handle_seek(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
69 {
2067
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
70 //TODO: more realistic seeking behavior
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
71 if (context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
72 if (context->seek_pba == context->head_pba) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
73 context->seeking = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
74 } else if (context->seek_pba > context->head_pba) {
2067
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
75 if (context->seek_pba - context->head_pba >= COARSE_SEEK) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
76 context->head_pba += COARSE_SEEK;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
77 } else if (context->seek_pba - context->head_pba >= FINE_SEEK) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
78 context->head_pba += FINE_SEEK;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
79 } else {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
80 context->head_pba++;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
81 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
82 } else {
2067
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
83 if (context->head_pba - context->seek_pba >= COARSE_SEEK) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
84 context->head_pba -= COARSE_SEEK;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
85 } else if (context->head_pba >= FINE_SEEK) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
86 context->head_pba -= FINE_SEEK;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
87 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
88 context->head_pba = 0;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
89 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
90 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
91 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
92 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
93
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
94 static void lba_to_status(cdd_mcu *context, uint32_t lba)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
95 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
96 uint32_t seconds = lba / 75;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
97 uint32_t frames = lba % 75;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
98 uint32_t minutes = seconds / 60;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
99 seconds = seconds % 60;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
100 context->status_buffer.b.time.min_high = minutes / 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
101 context->status_buffer.b.time.min_low = minutes % 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
102 context->status_buffer.b.time.sec_high = seconds / 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
103 context->status_buffer.b.time.sec_low = seconds % 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
104 context->status_buffer.b.time.frame_high = frames / 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
105 context->status_buffer.b.time.frame_low = frames % 10;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
106 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
107
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
108 static void update_status(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
109 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
110 switch (context->status)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
111 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
112 case DS_PLAY:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
113 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
114 if (!context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
115 context->head_pba++;
2076
3f29e2726522 Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents: 2075
diff changeset
116 context->media->seek(context->media, context->head_pba - LEADIN_SECTORS);
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
117 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
118 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
119 case DS_PAUSE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
120 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
121 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
122 case DS_TOC_READ:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
123 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
124 if (!context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
125 context->head_pba++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
126 if (context->media && context->media->type == MEDIA_CDROM && context->media->num_tracks) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
127 if (context->head_pba > 3*context->media->num_tracks + 1) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
128 context->toc_valid = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
129 context->seeking = 1;
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
130 context->seek_pba = LEADIN_SECTORS + context->media->tracks[0].start_lba;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
131 context->status = DS_PAUSE;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
132 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
133
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
134 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
135 context->status = DS_NO_DISC;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
136 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
137 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
138 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
139
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
140 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
141 if (context->first_cmd_received) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
142 switch (context->requested_format)
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
143 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
144 case SF_ABSOLUTE:
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
145 if (context->toc_valid && context->head_pba >= LEADIN_SECTORS) {
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
146 lba_to_status(context, context->head_pba - LEADIN_SECTORS);
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
147 context->status_buffer.format = SF_ABSOLUTE;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
148 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
149 context->status_buffer.format = SF_NOTREADY;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
150 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
151 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
152 case SF_RELATIVE:
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
153 if (context->toc_valid && context->head_pba >= LEADIN_SECTORS) {
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
154 uint32_t lba =context->head_pba - LEADIN_SECTORS;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
155 for (uint32_t i = 0; i < context->media->num_tracks; i++)
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
156 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
157 if (lba < context->media->tracks[i].end_lba) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
158 if (context->media->tracks[i].fake_pregap) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
159 if (lba > context->media->tracks[i].fake_pregap) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
160 lba -= context->media->tracks[i].fake_pregap;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
161 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
162 //relative time counts down to 0 in pregap
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
163 lba = context->media->tracks[i].fake_pregap - lba;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
164 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
165 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
166 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
167 if (lba < context->media->tracks[i].start_lba) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
168 //relative time counts down to 0 in pregap
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
169 lba = context->media->tracks[i].start_lba - lba;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
170 } else {
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
171 lba -= context->media->tracks[i].start_lba;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
172 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
173 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
174 } else if (context->media->tracks[i].fake_pregap) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
175 lba -= context->media->tracks[i].fake_pregap;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
176 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
177 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
178 lba_to_status(context, lba);
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
179 context->status_buffer.format = SF_RELATIVE;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
180 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
181 context->status_buffer.format = SF_NOTREADY;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
182 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
183 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
184 case SF_TRACK:
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
185 if (context->toc_valid && context->head_pba >= LEADIN_SECTORS) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
186 uint32_t lba =context->head_pba - LEADIN_SECTORS;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
187 uint32_t i;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
188 for (i = 0; i < context->media->num_tracks; i++)
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
189 {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
190 if (lba < context->media->tracks[i].end_lba) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
191 if (context->media->tracks[i].fake_pregap) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
192 if (lba > context->media->tracks[i].fake_pregap) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
193 lba -= context->media->tracks[i].fake_pregap;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
194 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
195 //relative time counts down to 0 in pregap
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
196 lba = context->media->tracks[i].fake_pregap - lba;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
197 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
198 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
199 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
200 if (lba < context->media->tracks[i].start_lba) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
201 //relative time counts down to 0 in pregap
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
202 lba = context->media->tracks[i].start_lba - lba;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
203 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
204 lba -= context->media->tracks[i].start_lba;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
205 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
206 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
207 } else if (context->media->tracks[i].fake_pregap) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
208 lba -= context->media->tracks[i].fake_pregap;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
209 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
210 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
211 context->status_buffer.b.track.track_high = (i + 1) / 10;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
212 context->status_buffer.b.track.track_low = (i + 1) % 10;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
213 if (context->media->tracks[i].type == TRACK_DATA) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
214 context->status_buffer.b.track.control = 4;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
215 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
216 //TODO: pre-emphasis flag
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
217 //TODO: copy permitted flag
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
218 context->status_buffer.b.track.control = 0;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
219 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
220 context->status_buffer.b.track.adr = 1;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
221 context->status_buffer.format = SF_TRACK;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
222 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
223 context->status_buffer.format = SF_NOTREADY;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
224 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
225 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
226 case SF_TOCO:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
227 if (context->toc_valid) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
228 uint32_t total_fake_pregap = 0;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
229 for (uint32_t i = 0; i < context->media->num_tracks; i++)
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
230 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
231 total_fake_pregap += context->media->tracks[i].fake_pregap;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
232 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
233 lba_to_status(context, context->media->tracks[context->media->num_tracks - 1].end_lba + total_fake_pregap);
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
234 context->status_buffer.format = SF_TOCO;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
235 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
236 context->status_buffer.format = SF_NOTREADY;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
237 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
238 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
239 case SF_TOCT:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
240 if (context->toc_valid) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
241 context->status_buffer.b.toct.first_track_high = 0;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
242 context->status_buffer.b.toct.first_track_low = 1;
2073
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
243 context->status_buffer.b.toct.last_track_high = (context->media->num_tracks) / 10;
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
244 context->status_buffer.b.toct.last_track_low = (context->media->num_tracks) % 10;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
245 context->status_buffer.b.toct.version = 0;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
246 context->status_buffer.format = SF_TOCT;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
247 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
248 context->status_buffer.format = SF_NOTREADY;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
249 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
250 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
251 case SF_TOCN:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
252 if (context->toc_valid) {
2073
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
253 if (context->requested_track > context->media->num_tracks) {
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
254 printf("track number %d is bad\n", context->requested_track);
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
255 exit(0);
c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
256 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
257 uint32_t lba = context->media->tracks[context->requested_track - 1].start_lba;
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
258 for (uint32_t i = 0; i < context->requested_track; i++) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
259 lba += context->media->tracks[i].fake_pregap;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
260 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
261 lba_to_status(context, lba);
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
262 if (context->media->tracks[context->requested_track - 1].type == TRACK_DATA) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
263 context->status_buffer.b.tocn.frame_low |= 0x80;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
264 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
265 context->status_buffer.b.tocn.track_low = context->requested_track % 10;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
266 context->status_buffer.format = SF_TOCN;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
267 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
268 context->status_buffer.format = SF_NOTREADY;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
269 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
270 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
271 case SF_NOTREADY:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
272 memset(&context->status_buffer, 0, sizeof(context->status_buffer) - 1);
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
273 context->status_buffer.format = SF_NOTREADY;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
274 break;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
275 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
276 if (context->error_status == DS_STOP) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
277 if (context->requested_format >= SF_TOCO && context->requested_format <= SF_TOCN) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
278 context->status_buffer.status = DS_TOC_READ;
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
279 } else if (context->seeking) {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2064
diff changeset
280 context->status_buffer.status = DS_SEEK;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
281 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
282 context->status_buffer.status = context->status;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
283 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
284 } else {
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
285 context->status_buffer.status = context->error_status;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
286 context->status_buffer.format = SF_NOTREADY;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
287 context->error_status = DS_STOP;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
288 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
289 if (context->requested_format != SF_TOCN) {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
290 context->status_buffer.b.time.flags = 1; //TODO: populate these
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
291 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
292 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
293 // Did not receive our first command so just send zeroes
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
294 memset(&context->status_buffer, 0, sizeof(context->status_buffer) - 1);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
295 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
296 context->status_buffer.checksum = checksum((uint8_t *)&context->status_buffer);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
297 if (context->status_buffer.format != SF_NOTREADY) {
2062
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
298 printf("CDD Status %X%X.%X%X%X%X%X%X.%X%X\n",
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
299 context->status_buffer.status, context->status_buffer.format,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
300 context->status_buffer.b.time.min_high, context->status_buffer.b.time.min_low,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
301 context->status_buffer.b.time.sec_high, context->status_buffer.b.time.sec_low,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
302 context->status_buffer.b.time.frame_high, context->status_buffer.b.time.frame_low,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
303 context->status_buffer.b.time.flags, context->status_buffer.checksum
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
304 );
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
305 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
306 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
307
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
308 static void run_command(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
309 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
310 uint8_t check = checksum((uint8_t*)&context->cmd_buffer);
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
311 printf("cmd %X, checksum: %X, calc: %X\n", context->cmd_buffer.cmd_type, context->cmd_buffer.checksum, check);
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
312 if (check != context->cmd_buffer.checksum) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
313 context->error_status = DS_SUM_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
314 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
315 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
316 if (context->cmd_buffer.must_be_zero) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
317 context->error_status = DS_CMD_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
318 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
319 }
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
320 context->first_cmd_received = 1;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
321 switch (context->cmd_buffer.cmd_type)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
322 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
323 case CMD_NOP:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
324 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
325 case CMD_STOP:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
326 puts("CDD CMD: STOP");
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
327 context->status = DS_STOP;
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
328 context->requested_format = SF_ABSOLUTE;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
329 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
330 case CMD_READ:
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
331 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
332 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
333 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
334 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
335 }
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
336 if (context->requested_format == SF_TOCT || context->requested_format == SF_TOCN) {
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
337 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
338 }
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
339 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
340 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
341 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
342 }
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
343 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
344 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
345 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
346 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
347 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
348 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
349 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
350 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
351 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
352 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
353 );
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
354 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
355 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
356 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
357 }
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
358 context->seek_pba = lba + LEADIN_SECTORS - 4;
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
359 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
360 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
361 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
362 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
363 case CMD_REPORT_REQUEST:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
364 switch (context->cmd_buffer.b.format.status_type)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
365 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
366 case SF_ABSOLUTE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
367 case SF_RELATIVE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
368 case SF_TRACK:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
369 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
370 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
371 case SF_TOCO:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
372 if (context->toc_valid) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
373 context->requested_format = SF_TOCO;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
374 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
375 context->error_status = DS_CMD_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
376 context->requested_format = SF_ABSOLUTE;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
377 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
378 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
379 case SF_TOCT:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
380 if (context->toc_valid) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
381 if (context->status == DS_STOP) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
382 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
383 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
384 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
385 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
386 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
387 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
388 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
389 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
390 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
391 context->requested_format = SF_TOCT;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
392 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
393 case SF_TOCN:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
394 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
395 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
396 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
397 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
398 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
399 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
400 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
401 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
402 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
403 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
404 context->requested_format = SF_TOCN;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
405 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
406 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
407 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
408 break;
2067
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
409 case CMD_PAUSE:
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
410 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
411 context->error_status = DS_CMD_ERROR;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
412 break;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
413 }
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
414 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
415 context->requested_format = SF_ABSOLUTE;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
416 }
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
417 if (!context->toc_valid) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
418 context->error_status = DS_CMD_ERROR;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
419 break;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
420 }
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
421 if (context->status == DS_STOP) {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
422 context->seeking = 1;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
423 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
424 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
425 } else {
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
426 puts("CDD CMD: PAUSE");
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
427 }
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
428 context->status = DS_PAUSE;
f22e04b69272 More CDC/CDD improvements
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
429 break;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
430 default:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
431 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
432 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
433 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
434
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
435 #define BIT_HOCK 0x4
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
436 #define BIT_DRS 0x2
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
437 #define BIT_DTS 0x1
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
438
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
439 void cdd_mcu_run(cdd_mcu *context, uint32_t cycle, uint16_t *gate_array, lc8951* cdc)
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
440 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
441 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
442 if (!(gate_array[GAO_CDD_CTRL] & BIT_HOCK)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
443 //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
444 //assum it's actually the clock for now
2064
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
445 context->cycle = cd_cycle;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
446 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
447 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
448 uint32_t next_subcode = context->last_subcode_cycle + SECTOR_CLOCKS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
449 uint32_t next_nibble = context->current_status_nibble >= 0 ? context->last_nibble_cycle + NIBBLE_CLOCKS : CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
450 uint32_t next_cmd_nibble = context->current_cmd_nibble >= 0 ? context->last_nibble_cycle + NIBBLE_CLOCKS : 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
451 uint32_t next_byte = context->current_sector_byte >= 0 ? context->last_byte_cycle + BYTE_CLOCKS : CYCLE_NEVER;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
452 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
453 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
454 if (context->cycle >= next_subcode) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
455 context->last_subcode_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
456 next_subcode = context->cycle + SECTOR_CLOCKS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
457 update_status(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
458 next_nibble = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
459 context->current_status_nibble = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
460 gate_array[GAO_CDD_STATUS] |= BIT_DRS;
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
461 if (context->status == DS_PLAY && !context->seeking) {
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
462 next_byte = context->cycle;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
463 context->current_sector_byte = 0;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents: 2061
diff changeset
464 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
465 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
466 if (context->cycle >= next_nibble) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
467 if (context->current_status_nibble == sizeof(cdd_status)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
468 context->current_status_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
469 gate_array[GAO_CDD_STATUS] &= ~BIT_DRS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
470 if (context->cmd_recv_pending) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
471 context->cmd_recv_pending = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
472 context->current_cmd_nibble = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
473 gate_array[GAO_CDD_STATUS] |= BIT_DTS;
2075
983f57d08eff Fix a couple of CDD bugs
Michael Pavone <pavone@retrodev.com>
parents: 2073
diff changeset
474 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
475 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
476 context->cmd_recv_wait = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
477 }
2075
983f57d08eff Fix a couple of CDD bugs
Michael Pavone <pavone@retrodev.com>
parents: 2073
diff changeset
478 next_nibble = CYCLE_NEVER;
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
479 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
480 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
481 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
482 if (context->current_status_nibble & 1) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
483 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
484 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
485 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
486 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
487 if (context->current_status_nibble == 7) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
488 context->int_pending = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
489 context->next_int_cycle = cd_block_to_mclks(cycle + SECTOR_CLOCKS);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
490 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
491 context->current_status_nibble++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
492 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
493 next_nibble = context->cycle + NIBBLE_CLOCKS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
494 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
495 } else if (context->cycle >= next_cmd_nibble) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
496 if (context->current_cmd_nibble == sizeof(cdd_cmd)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
497 next_cmd_nibble = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
498 context->current_cmd_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
499 gate_array[GAO_CDD_STATUS] &= ~BIT_DTS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
500 run_command(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
501 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
502 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
503 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
504 ((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
505 context->current_cmd_nibble++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
506 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
507 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
508 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
509 }
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
510 if (context->cycle >= next_byte) {
2076
3f29e2726522 Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents: 2075
diff changeset
511 uint8_t byte = context->media->read(context->media, context->current_sector_byte);
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
512 lc8951_write_byte(cdc, cd_block_to_mclks(context->cycle), context->current_sector_byte++, byte);
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
513 context->last_byte_cycle = context->cycle;
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
514 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
515 context->current_sector_byte = -1;
2075
983f57d08eff Fix a couple of CDD bugs
Michael Pavone <pavone@retrodev.com>
parents: 2073
diff changeset
516 next_byte = CYCLE_NEVER;
983f57d08eff Fix a couple of CDD bugs
Michael Pavone <pavone@retrodev.com>
parents: 2073
diff changeset
517 } else {
983f57d08eff Fix a couple of CDD bugs
Michael Pavone <pavone@retrodev.com>
parents: 2073
diff changeset
518 next_byte = context->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
519 }
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
520 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
521 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
522 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
523
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
524 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
525 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
526 if (context->cmd_recv_wait) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
527 context->current_cmd_nibble = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
528 gate_array[GAO_CDD_STATUS] |= BIT_DTS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
529 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
530 context->cmd_recv_wait = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
531 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
532 context->cmd_recv_pending = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
533 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
534 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
535
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
536 void cdd_hock_enabled(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
537 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
538 context->last_subcode_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
539 context->next_int_cycle = cd_block_to_mclks(context->cycle + SECTOR_CLOCKS + 7 * NIBBLE_CLOCKS);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
540 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
541
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
542 void cdd_hock_disabled(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
543 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
544 context->last_subcode_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
545 context->next_int_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
546 context->last_nibble_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
547 context->current_status_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
548 context->current_cmd_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
549 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
550
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
551 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
552 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
553 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
554 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
555 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
556 } 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
557 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
558 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
559 if (context->next_int_cycle != CYCLE_NEVER) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
560 context->next_int_cycle -= deduction;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
561 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
562 if (context->last_subcode_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
563 if (context->last_subcode_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
564 context->last_subcode_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
565 } 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
566 context->last_subcode_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
567 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
568 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
569 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
570 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
571 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
572 } 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
573 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
574 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
575 }
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
576 if (context->last_byte_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
577 if (context->last_byte_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
578 context->last_byte_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
579 } 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
580 context->last_byte_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
581 }
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
582 }
2061
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
583 }