repos/blastem: cdd_mcu.c annotate

annotate cdd_mcu.c @ 2081:cfd53c94fffb

Initial stab at RF5C164 emulation

author	Michael Pavone <pavone@retrodev.com>
date	Thu, 03 Feb 2022 23:15:42 -0800
parents	bafb757e1cd2
children	c9d3b8e1ea56

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;
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	42 context->last_byte_cycle = 0;
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 };
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	55 //GAO_CDD_CTRL
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	56 #define BIT_MUTE 0x100
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	57 #define BIT_HOCK 0x0004
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	58 #define BIT_DRS 0x0002
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	59 #define BIT_DTS 0x0001
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	60
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	61 static uint8_t checksum(uint8_t *vbuffer)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	62 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	63 uint8_t *buffer = vbuffer;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	64 uint8_t sum = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	65 for (int i = 0; i < 9; i++)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	66 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	67 sum += buffer[i];
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	68 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	69 return (~sum) & 0xF;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	70 }
2067 f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	71 #define COARSE_SEEK 2200 //made up numbers
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	72 #define FINE_SEEK 10
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	73 static void handle_seek(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	74 {
2067 f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	75 //TODO: more realistic seeking behavior
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	76 if (context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	77 if (context->seek_pba == context->head_pba) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	78 context->seeking = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	79 } else if (context->seek_pba > context->head_pba) {
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2080 diff changeset	80 if (context->seek_pba - context->head_pba >= COARSE_SEEK \|\| context->head_pba < LEADIN_SECTORS) {
2067 f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	81 context->head_pba += COARSE_SEEK;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	82 } else if (context->seek_pba - context->head_pba >= FINE_SEEK) {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	83 context->head_pba += FINE_SEEK;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	84 } else {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	85 context->head_pba++;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	86 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	87 } else {
2067 f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	88 if (context->head_pba - context->seek_pba >= COARSE_SEEK) {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	89 context->head_pba -= COARSE_SEEK;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	90 } else if (context->head_pba >= FINE_SEEK) {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	91 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	92 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	93 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	94 }
2061 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 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	97 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	98
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	99 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	100 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	101 uint32_t seconds = lba / 75;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	102 uint32_t frames = lba % 75;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	103 uint32_t minutes = seconds / 60;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	104 seconds = seconds % 60;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	105 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	106 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	107 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	108 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	109 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	110 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	111 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	112
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	113 static void update_status(cdd_mcu context, uint16_t gate_array)
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	114 {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	115 gate_array[GAO_CDD_CTRL] \|= BIT_MUTE;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	116 switch (context->status)
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 case DS_PLAY:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	119 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	120 if (!context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	121 context->head_pba++;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2080 diff changeset	122 }
cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2080 diff changeset	123 if (context->head_pba >= LEADIN_SECTORS) {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	124 uint8_t track = context->media->seek(context->media, context->head_pba - LEADIN_SECTORS);
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	125 if (context->media->tracks[track].type == TRACK_AUDIO) {
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	126 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE;
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	127 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	128 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	129 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	130 case DS_PAUSE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	131 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	132 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	133 case DS_TOC_READ:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	134 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	135 if (!context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	136 context->head_pba++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	137 if (context->media && context->media->type == MEDIA_CDROM && context->media->num_tracks) {
2079 5a2b759f6b2d BIOS doesn't like it if TOC read happens too quickly Michael Pavone <pavone@retrodev.com> parents: 2078 diff changeset	138 if (context->head_pba > 3*(context->media->num_tracks + 2)) {
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	139 context->toc_valid = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	140 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	141 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	142 context->status = DS_PAUSE;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	143 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	144
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	145 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	146 context->status = DS_NO_DISC;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	147 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	148 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	149 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	150
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	151 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	152 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	153 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	154 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	155 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	156 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	157 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	158 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	159 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	160 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	161 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	162 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	163 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	164 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	165 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	166 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	167 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	168 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	169 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	170 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	171 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	172 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	173 //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	174 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	175 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	176 }
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 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	179 //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	180 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	181 } else {
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	182 lba -= context->media->tracks[i].start_lba;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	183 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	184 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	185 } 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	186 lba -= context->media->tracks[i].fake_pregap;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	187 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	188 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	189 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	190 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	191 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	192 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	193 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	194 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	195 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	196 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	197 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	198 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	199 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	200 {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	201 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	202 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	203 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	204 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	205 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	206 //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	207 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	208 break;
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 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	212 //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	213 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	214 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	215 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	216 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	217 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	218 } 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	219 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	220 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	221 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	222 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	223 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	224 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	225 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	226 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	227 //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	228 //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	229 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	230 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	231 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	232 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	233 } else {
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_NOTREADY;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	235 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	236 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	237 case SF_TOCO:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	238 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	239 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	240 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	241 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	242 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	243 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	244 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	245 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	246 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	247 context->status_buffer.format = SF_NOTREADY;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	248 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	249 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	250 case SF_TOCT:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	251 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	252 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	253 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	254 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	255 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	256 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	257 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	258 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	259 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	260 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	261 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	262 case SF_TOCN:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	263 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	264 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	265 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	266 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	267 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	268 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	269 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	270 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	271 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	272 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	273 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	274 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	275 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	276 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	277 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	278 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	279 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	280 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	281 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	282 case SF_NOTREADY:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	283 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	284 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	285 break;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	286 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	287 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	288 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	289 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	290 } 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	291 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	292 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	293 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	294 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	295 } else {
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	296 context->status_buffer.status = context->error_status;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	297 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	298 context->error_status = DS_STOP;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	299 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	300 if (context->requested_format != SF_TOCN) {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	301 context->status_buffer.b.time.flags = !!(gate_array[GAO_CDD_CTRL] & BIT_MUTE); //TODO: populate these
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	302 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	303 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	304 // 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	305 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	306 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	307 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	308 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	309 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	310 context->status_buffer.status, context->status_buffer.format,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	311 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	312 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	313 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	314 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	315 );
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	316 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	317 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	318
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	319 static void run_command(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	320 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	321 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	322 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	323 if (check != context->cmd_buffer.checksum) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	324 context->error_status = DS_SUM_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	325 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	326 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	327 if (context->cmd_buffer.must_be_zero) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	328 context->error_status = DS_CMD_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	329 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	330 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	331 context->first_cmd_received = 1;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	332 switch (context->cmd_buffer.cmd_type)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	333 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	334 case CMD_NOP:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	335 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	336 case CMD_STOP:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	337 puts("CDD CMD: STOP");
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	338 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	339 context->requested_format = SF_ABSOLUTE;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	340 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	341 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	342 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	343 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	344 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	345 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	346 }
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 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	348 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	349 }
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	350 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	351 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	352 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	353 }
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 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	355 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	356 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	357 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	358 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	359 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	360 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	361 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	362 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	363 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	364 );
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	365 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	366 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	367 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	368 }
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	369 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	370 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	371 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	372 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	373 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	374 case CMD_REPORT_REQUEST:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	375 switch (context->cmd_buffer.b.format.status_type)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	376 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	377 case SF_ABSOLUTE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	378 case SF_RELATIVE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	379 case SF_TRACK:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	380 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	381 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	382 case SF_TOCO:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	383 if (context->toc_valid) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	384 context->requested_format = SF_TOCO;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	385 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	386 context->error_status = DS_CMD_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	387 context->requested_format = SF_ABSOLUTE;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	388 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	389 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	390 case SF_TOCT:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	391 if (context->toc_valid) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	392 if (context->status == DS_STOP) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	393 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	394 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	395 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	396 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	397 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	398 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	399 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	400 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	401 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	402 context->requested_format = SF_TOCT;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	403 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	404 case SF_TOCN:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	405 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	406 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	407 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	408 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	409 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	410 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	411 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	412 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	413 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	414 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	415 context->requested_format = SF_TOCN;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	416 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	417 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	418 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	419 break;
2067 f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	420 case CMD_PAUSE:
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	421 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	422 context->error_status = DS_CMD_ERROR;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	423 break;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	424 }
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	425 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	426 context->requested_format = SF_ABSOLUTE;
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 if (!context->toc_valid) {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	429 context->error_status = DS_CMD_ERROR;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	430 break;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	431 }
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	432 if (context->status == DS_STOP) {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	433 context->seeking = 1;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	434 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	435 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	436 } else {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	437 puts("CDD CMD: PAUSE");
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	438 }
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	439 context->status = DS_PAUSE;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	440 break;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	441 default:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	442 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	443 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	444 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	445
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	446 void cdd_mcu_run(cdd_mcu context, uint32_t cycle, uint16_t gate_array, lc8951* cdc, cdd_fader* fader)
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	447 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	448 uint32_t cd_cycle = mclks_to_cd_block(cycle);
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	449 uint32_t next_byte = context->last_byte_cycle + BYTE_CLOCKS;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	450 if (!(gate_array[GAO_CDD_CTRL] & BIT_HOCK)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	451 //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	452 //assum it's actually the clock for now
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	453 for (; context->cycle < cd_cycle; context->cycle += CDD_MCU_DIVIDER) {
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	454 if (context->cycle >= next_byte) {
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	455 cdd_fader_data(fader, 0);
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	456 next_byte = context->cycle + BYTE_CLOCKS;
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	457 context->last_byte_cycle = context->cycle;
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	458 }
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	459 }
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	460 gate_array[GAO_CDD_CTRL] \|= BIT_MUTE;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	461 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	462 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	463 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	464 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	465 uint32_t next_cmd_nibble = context->current_cmd_nibble >= 0 ? context->last_nibble_cycle + NIBBLE_CLOCKS : CYCLE_NEVER;
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	466
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	467 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	468 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	469 if (context->cycle >= next_subcode) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	470 context->last_subcode_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	471 next_subcode = context->cycle + SECTOR_CLOCKS;
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	472 update_status(context, gate_array);
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	473 next_nibble = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	474 context->current_status_nibble = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	475 gate_array[GAO_CDD_STATUS] \|= BIT_DRS;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2080 diff changeset	476 if (context->status == DS_PLAY && context->head_pba >= LEADIN_SECTORS) {
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	477 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	478 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	479 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	480 if (context->cycle >= next_nibble) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	481 if (context->current_status_nibble == sizeof(cdd_status)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	482 context->current_status_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	483 gate_array[GAO_CDD_STATUS] &= ~BIT_DRS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	484 if (context->cmd_recv_pending) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	485 context->cmd_recv_pending = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	486 context->current_cmd_nibble = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	487 gate_array[GAO_CDD_STATUS] \|= BIT_DTS;
2075 983f57d08eff Fix a couple of CDD bugs Michael Pavone <pavone@retrodev.com> parents: 2073 diff changeset	488 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	489 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	490 context->cmd_recv_wait = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	491 }
2075 983f57d08eff Fix a couple of CDD bugs Michael Pavone <pavone@retrodev.com> parents: 2073 diff changeset	492 next_nibble = CYCLE_NEVER;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	493 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	494 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	495 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	496 if (context->current_status_nibble & 1) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	497 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	498 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	499 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	500 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	501 if (context->current_status_nibble == 7) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	502 context->int_pending = 1;
2078 c534a3199020 Fix CDD int cycle calculation Michael Pavone <pavone@retrodev.com> parents: 2076 diff changeset	503 context->next_int_cycle = cd_block_to_mclks(context->cycle + SECTOR_CLOCKS);
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	504 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	505 context->current_status_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_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 } else if (context->cycle >= next_cmd_nibble) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	510 if (context->current_cmd_nibble == sizeof(cdd_cmd)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	511 next_cmd_nibble = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	512 context->current_cmd_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	513 gate_array[GAO_CDD_STATUS] &= ~BIT_DTS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	514 run_command(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	515 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	516 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	517 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	518 ((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	519 context->current_cmd_nibble++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	520 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	521 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS;
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 }
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	524 if (context->cycle >= next_byte) {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	525 if (context->current_sector_byte >= 0) {
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	526 uint8_t byte = context->media->read(context->media, context->current_sector_byte);
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	527 lc8951_write_byte(cdc, cd_block_to_mclks(context->cycle), context->current_sector_byte++, byte);
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	528 cdd_fader_data(fader, gate_array[GAO_CDD_CTRL] & BIT_MUTE ? 0 : byte);
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	529 } else {
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	530 cdd_fader_data(fader, 0);
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	531 }
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	532 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	533 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	534 context->current_sector_byte = -1;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	535 }
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	536 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	537 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	538 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	539 }
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 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	542 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	543 if (context->cmd_recv_wait) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	544 context->current_cmd_nibble = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	545 gate_array[GAO_CDD_STATUS] \|= BIT_DTS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	546 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	547 context->cmd_recv_wait = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	548 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	549 context->cmd_recv_pending = 1;
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 }
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 void cdd_hock_enabled(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	554 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	555 context->last_subcode_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	556 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	557 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	558
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	559 void cdd_hock_disabled(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	560 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	561 context->last_subcode_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	562 context->next_int_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	563 context->last_nibble_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	564 context->current_status_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	565 context->current_cmd_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	566 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	567
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	568 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	569 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	570 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	571 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	572 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	573 } 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	574 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	575 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	576 if (context->next_int_cycle != CYCLE_NEVER) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	577 context->next_int_cycle -= deduction;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	578 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	579 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	580 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	581 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	582 } 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	583 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	584 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	585 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	586 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	587 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	588 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	589 } 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	590 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	591 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	592 }
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	593 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	594 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	595 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	596 } 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	597 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	598 }
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	599 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	600 }

Mercurial > repos > blastem

annotate cdd_mcu.c @ 2081:cfd53c94fffb