repos/blastem: cdd_mcu.c annotate

annotate cdd_mcu.c @ 2155:6f58af5bd6fa

Add ROM DB entry for NHL 96 as it is missing SRAM info in the header

author	Michael Pavone <pavone@retrodev.com>
date	Thu, 07 Apr 2022 00:49:58 -0700
parents	c3ee42c89b27
children	a8af8d898a7c

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
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	7 #define SECTORS_PER_SECOND 75
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	8 #define SECTOR_CLOCKS (CD_BLOCK_CLKS/SECTORS_PER_SECOND)
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	9 #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	10 #define BYTE_CLOCKS (SECTOR_CLOCKS/2352) // 96
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	11 #define SUBCODE_CLOCKS (SECTOR_CLOCKS/98)
2115 e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	12 #define PROCESSING_DELAY 54000 //approximate, based on Wondermega M1 measurements
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	13
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	14 //lead in start max diameter 46 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	15 //program area start max diameter 50 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	16 //difference 4 mm = 4000 um
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	17 //radius difference 2 mm = 2000 um
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	18 //track pitch 1.6 um
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	19 //1250 physical tracks in between
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	20 //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	21 // 1.3 m = 1300 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	22 // circumference at 46 mm ~ 144.51 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	23 // circumference at 50 mm ~ 157.08 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	24 // avg is 150.795
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	25 // 75 sectors per second
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	26 // 17.3333 mm "typical" length of a sector
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	27 // ~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	28 #define LEADIN_SECTORS 10875
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	29
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	30 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	31 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	32 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	33 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	34
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	35 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	36 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	37 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	38 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	39
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	40 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	41 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	42 context->next_int_cycle = CYCLE_NEVER;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	43 context->next_subcode_int_cycle = CYCLE_NEVER;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	44 context->last_sector_cycle = CYCLE_NEVER;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	45 context->last_nibble_cycle = CYCLE_NEVER;
2089 0db3af42dd72 Fix some byte order stuff for audio tracks Michael Pavone <pavone@retrodev.com> parents: 2084 diff changeset	46 context->next_byte_cycle = 0;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	47 context->next_subcode_cycle = CYCLE_NEVER;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	48 context->requested_format = SF_NOTREADY;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	49 context->media = media;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	50 context->current_status_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	51 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	52 context->current_sector_byte = -1;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	53 context->current_subcode_byte = -1;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	54 context->current_subcode_dest = 0;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	55 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	56
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	57 enum {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	58 GAO_CDD_CTRL,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	59 GAO_CDD_STATUS,
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	60 GAO_CDD_CMD = GAO_CDD_STATUS+5,
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	61 GAO_SUBCODE_ADDR = (0x68-0x36)/2,
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	62 GAO_SUBCODE_START = (0x100-0x36)/2
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	63 };
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	64 //GAO_CDD_CTRL
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	65 #define BIT_MUTE 0x100
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	66 #define BIT_HOCK 0x0004
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	67 #define BIT_DRS 0x0002
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	68 #define BIT_DTS 0x0001
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	69
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	70 static uint8_t checksum(uint8_t *vbuffer)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	71 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	72 uint8_t *buffer = vbuffer;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	73 uint8_t sum = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	74 for (int i = 0; i < 9; i++)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	75 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	76 sum += buffer[i];
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	77 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	78 return (~sum) & 0xF;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	79 }
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	80
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	81 #define MIN_CIRCUMFERENCE 144.51f
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	82 #define MAX_CIRCUMFERENCE 364.42f
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	83 #define SECTOR_LENGTH 17.3333f
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	84 // max diameter for program area 116 mm
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	85 // circumference ~ 364.42 mm
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	86 // ~ 21 sectors per physical track at edge
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	87 // ~8 sectors per physical track at start of lead-in
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	88 #define COARSE_SEEK_TRACKS 57 //estimate based on seek test
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	89 static void handle_seek(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	90 {
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	91 uint32_t old_coarse = context->coarse_seek;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	92 if (context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	93 if (context->seek_pba == context->head_pba) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	94 context->seeking = 0;
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	95 context->coarse_seek = 0;
2095 c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	96 if (context->status == DS_PAUSE) {
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	97 context->pause_pba = context->head_pba;
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	98 }
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	99 } else {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	100 //TODO: better estimate of sectors per track at current head location
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	101 //TODO: drive will periodically lose tracking when seeking which slows
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	102 //things down from this ideal speed I'm curently estimating
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	103 float circumference = (MAX_CIRCUMFERENCE-MIN_CIRCUMFERENCE) * ((float)context->head_pba) / (74 * 60 * SECTORS_PER_SECOND) + MIN_CIRCUMFERENCE;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	104 float sectors_per_track = circumference / SECTOR_LENGTH;
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	105 uint32_t max_seek = sectors_per_track * COARSE_SEEK_TRACKS;
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	106 uint32_t min_seek = sectors_per_track;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	107
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	108 uint32_t old_pba = context->head_pba;
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	109 if (context->seek_pba > context->head_pba) {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	110 uint32_t seek_amount;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	111 for (seek_amount = max_seek; seek_amount >= min_seek; seek_amount >>= 1)
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	112 {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	113 if (context->seek_pba - context->head_pba >= seek_amount) {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	114 break;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	115 }
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	116 }
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	117 if (seek_amount >= min_seek) {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	118 context->head_pba += seek_amount;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	119 } else {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	120 context->head_pba++;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	121 }
2067 f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	122 } else {
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	123 uint32_t seek_amount;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	124 for (seek_amount = max_seek; seek_amount >= min_seek; seek_amount >>= 1)
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	125 {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	126 if (context->head_pba - context->seek_pba >= seek_amount) {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	127 break;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	128 }
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	129 }
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	130 if (seek_amount >= min_seek) {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	131 context->head_pba -= seek_amount;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	132 } else if (context->head_pba >= min_seek){
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	133 context->head_pba -= min_seek;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	134 } else {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	135 context->head_pba = 0;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	136 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	137 }
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	138 if (context->head_pba != old_pba + 1) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	139 context->coarse_seek++;
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	140 } else {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	141 context->coarse_seek = 0;
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	142 }
2061 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 }
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	145 if (old_coarse && !context->coarse_seek) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	146 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	147 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	148
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	149 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	150 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	151 uint32_t seconds = lba / 75;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	152 uint32_t frames = lba % 75;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	153 uint32_t minutes = seconds / 60;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	154 seconds = seconds % 60;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	155 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	156 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	157 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	158 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	159 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	160 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	161 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	162
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	163 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	164 {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	165 gate_array[GAO_CDD_CTRL] \|= BIT_MUTE;
2115 e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	166 uint32_t prev_pba = context->head_pba;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	167 switch (context->status)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	168 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	169 case DS_PLAY:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	170 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	171 if (!context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	172 context->head_pba++;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2080 diff changeset	173 }
cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2080 diff changeset	174 if (context->head_pba >= LEADIN_SECTORS) {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	175 uint8_t track = context->media->seek(context->media, context->head_pba - LEADIN_SECTORS);
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	176 if (!context->seeking && context->media->tracks[track].type == TRACK_AUDIO) {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	177 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE;
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	178 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	179 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	180 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	181 case DS_PAUSE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	182 handle_seek(context);
2095 c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	183 if (!context->seeking) {
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	184 context->head_pba++;
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	185 //TODO: better estimate of sectors per track at current head location
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	186 float circumference = (MAX_CIRCUMFERENCE-MIN_CIRCUMFERENCE) * ((float)context->head_pba) / (74 * 60 * SECTORS_PER_SECOND) + MIN_CIRCUMFERENCE;
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	187 float sectors_per_track = circumference / SECTOR_LENGTH;
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	188 //TODO: check the exact behavior during pause on hardware
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	189 uint32_t diff = sectors_per_track * 0.5f + 0.5f;
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	190 if (context->head_pba > context->pause_pba + diff) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	191 context->head_pba = context->pause_pba - diff;
2095 c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	192 if (context->head_pba < LEADIN_SECTORS) {
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	193 context->head_pba = LEADIN_SECTORS;
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	194 }
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	195 }
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	196 }
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	197 if (context->head_pba >= LEADIN_SECTORS) {
2117 03304d350339 Set force-mute when CD drive is in the pause state Michael Pavone <pavone@retrodev.com> parents: 2116 diff changeset	198 context->media->seek(context->media, context->head_pba - LEADIN_SECTORS);
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	199 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	200 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	201 case DS_TOC_READ:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	202 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	203 if (!context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	204 context->head_pba++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	205 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	206 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	207 context->toc_valid = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	208 context->seeking = 1;
2095 c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	209 context->seek_pba = LEADIN_SECTORS + context->media->tracks[0].start_lba + context->media->tracks[0].fake_pregap;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	210 context->status = DS_PAUSE;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	211 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	212
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	213 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	214 context->status = DS_NO_DISC;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	215 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	216 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	217 break;
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	218 case DS_TRACKING:
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	219 handle_seek(context);
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	220 if (!context->seeking) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	221 context->status = DS_PAUSE;
2095 c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	222 context->pause_pba = context->head_pba;
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	223 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	224 if (context->head_pba >= LEADIN_SECTORS) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	225 uint8_t track = context->media->seek(context->media, context->head_pba - LEADIN_SECTORS);
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	226 if (!context->seeking && context->media->tracks[track].type == TRACK_AUDIO) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	227 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	228 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	229 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	230 break;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	231 }
2124 ad346054ca78 Return "not ready" status sometimes when seeking. Fixes issues in multiple games Michael Pavone <pavone@retrodev.com> parents: 2122 diff changeset	232 uint8_t force_not_ready = 0;
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	233 if (context->coarse_seek && !(context->coarse_seek % 15)) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	234 //TODO: adjust seeking for focus error when these bad statuses happen
2124 ad346054ca78 Return "not ready" status sometimes when seeking. Fixes issues in multiple games Michael Pavone <pavone@retrodev.com> parents: 2122 diff changeset	235 //BIOS depends on getting a not ready status during seeking to clear certain state
ad346054ca78 Return "not ready" status sometimes when seeking. Fixes issues in multiple games Michael Pavone <pavone@retrodev.com> parents: 2122 diff changeset	236 force_not_ready = context->status_buffer.format != SF_NOTREADY;
ad346054ca78 Return "not ready" status sometimes when seeking. Fixes issues in multiple games Michael Pavone <pavone@retrodev.com> parents: 2122 diff changeset	237 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	238 if (context->first_cmd_received) {
2124 ad346054ca78 Return "not ready" status sometimes when seeking. Fixes issues in multiple games Michael Pavone <pavone@retrodev.com> parents: 2122 diff changeset	239 switch (force_not_ready ? SF_NOTREADY : context->requested_format)
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	240 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	241 case SF_ABSOLUTE:
2115 e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	242 if (context->toc_valid && prev_pba >= LEADIN_SECTORS) {
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	243 lba_to_status(context, prev_pba - LEADIN_SECTORS);
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	244 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	245 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	246 context->status_buffer.format = SF_NOTREADY;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	247 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	248 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	249 case SF_RELATIVE:
2115 e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	250 if (context->toc_valid && prev_pba >= LEADIN_SECTORS) {
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	251 uint32_t lba =prev_pba - LEADIN_SECTORS;
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	252 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	253 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	254 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	255 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	256 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	257 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	258 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	259 //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	260 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	261 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	262 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	263 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	264 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	265 //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	266 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	267 } else {
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	268 lba -= context->media->tracks[i].start_lba;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	269 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	270 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	271 } 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	272 lba -= context->media->tracks[i].fake_pregap;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	273 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	274 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	275 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	276 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	277 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	278 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	279 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	280 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	281 case SF_TRACK:
2115 e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	282 if (context->toc_valid && prev_pba >= LEADIN_SECTORS) {
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	283 uint32_t lba =prev_pba - LEADIN_SECTORS;
2065 02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	284 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	285 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	286 {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	287 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	288 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	289 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	290 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	291 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	292 //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	293 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	294 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	295 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	296 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	297 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	298 //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	299 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	300 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	301 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	302 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	303 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	304 } 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	305 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	306 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	307 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	308 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	309 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	310 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	311 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	312 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	313 //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	314 //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	315 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	316 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	317 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	318 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	319 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	320 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	321 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	322 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	323 case SF_TOCO:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	324 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	325 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	326 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	327 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	328 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	329 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	330 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	331 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	332 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	333 context->status_buffer.format = SF_NOTREADY;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	334 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	335 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	336 case SF_TOCT:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	337 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	338 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	339 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	340 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	341 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	342 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	343 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	344 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	345 context->status_buffer.format = SF_NOTREADY;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	346 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	347 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	348 case SF_TOCN:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	349 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	350 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	351 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	352 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	353 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	354 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	355 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	356 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	357 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	358 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	359 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	360 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	361 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	362 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	363 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	364 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	365 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	366 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	367 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	368 case SF_NOTREADY:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	369 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	370 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	371 break;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	372 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	373 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	374 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	375 context->status_buffer.status = DS_TOC_READ;
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	376 } else if (context->seeking && context->status != DS_TRACKING) {
2065 02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	377 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	378 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	379 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	380 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	381 } else {
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	382 context->status_buffer.status = context->error_status;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	383 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	384 context->error_status = DS_STOP;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	385 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	386 if (context->requested_format != SF_TOCN) {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	387 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	388 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	389 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	390 // 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	391 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	392 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	393 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	394 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	395 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	396 context->status_buffer.status, context->status_buffer.format,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	397 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	398 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	399 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	400 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	401 );
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	402 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	403 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	404
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	405 static void run_command(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	406 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	407 uint8_t check = checksum((uint8_t*)&context->cmd_buffer);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	408 if (check != context->cmd_buffer.checksum) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	409 context->error_status = DS_SUM_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	410 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	411 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	412 if (context->cmd_buffer.must_be_zero) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	413 context->error_status = DS_CMD_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	414 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	415 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	416 context->first_cmd_received = 1;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	417 switch (context->cmd_buffer.cmd_type)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	418 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	419 case CMD_NOP:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	420 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	421 case CMD_STOP:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	422 puts("CDD CMD: STOP");
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	423 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	424 context->requested_format = SF_ABSOLUTE;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	425 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	426 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	427 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	428 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	429 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	430 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	431 }
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	432 if (context->requested_format == SF_TOCT \|\| context->requested_format == SF_TOCN \|\| context->requested_format == SF_TOCO) {
2062 07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	433 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	434 }
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	435 if (!context->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	436 context->error_status = DS_CMD_ERROR;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	437 break;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	438 }
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	439 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	440 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	441 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	442 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	443 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	444 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	445 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	446 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	447 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	448 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	449 );
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	450 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	451 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	452 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	453 }
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	454 context->seek_pba = lba + LEADIN_SECTORS - 3;
2062 07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	455 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	456 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	457 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	458 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	459 case CMD_REPORT_REQUEST:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	460 switch (context->cmd_buffer.b.format.status_type)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	461 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	462 case SF_ABSOLUTE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	463 case SF_RELATIVE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	464 case SF_TRACK:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	465 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	466 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	467 case SF_TOCO:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	468 if (context->toc_valid) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	469 context->requested_format = SF_TOCO;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	470 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	471 context->error_status = DS_CMD_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	472 context->requested_format = SF_ABSOLUTE;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	473 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	474 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	475 case SF_TOCT:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	476 if (context->toc_valid) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	477 if (context->status == DS_STOP) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	478 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	479 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	480 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	481 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	482 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	483 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	484 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	485 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	486 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	487 context->requested_format = SF_TOCT;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	488 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	489 case SF_TOCN:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	490 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	491 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	492 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	493 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	494 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	495 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	496 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	497 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	498 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	499 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	500 context->requested_format = SF_TOCN;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	501 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	502 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	503 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	504 break;
2067 f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	505 case CMD_PAUSE:
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	506 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	507 context->error_status = DS_CMD_ERROR;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	508 break;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	509 }
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	510 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	511 context->requested_format = SF_ABSOLUTE;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	512 }
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	513 if (!context->toc_valid) {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	514 context->error_status = DS_CMD_ERROR;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	515 break;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	516 }
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	517 if (context->status == DS_STOP) {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	518 context->seeking = 1;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	519 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	520 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	521 } else {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	522 puts("CDD CMD: PAUSE");
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	523 }
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	524 context->status = DS_PAUSE;
2095 c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	525 if (!context->seeking) {
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	526 context->pause_pba = context->head_pba;
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	527 }
2067 f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	528 break;
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	529 case CMD_PLAY:
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	530 if (context->status == DS_DOOR_OPEN \|\| context->status == DS_TRAY_MOVING \|\| context->status == DS_DISC_LEADOUT \|\| context->status == DS_DISC_LEADIN) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	531 context->error_status = DS_CMD_ERROR;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	532 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	533 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	534 if (context->requested_format == SF_TOCT \|\| context->requested_format == SF_TOCN) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	535 context->requested_format = SF_ABSOLUTE;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	536 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	537 if (!context->toc_valid) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	538 context->error_status = DS_CMD_ERROR;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	539 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	540 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	541 if (context->status == DS_STOP \|\| context->status == DS_TOC_READ) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	542 context->seeking = 1;
2100 539450d905b3 Fix CDD PLAY command and CDD fader sample alignment Michael Pavone <pavone@retrodev.com> parents: 2096 diff changeset	543 context->seek_pba = LEADIN_SECTORS + context->media->tracks[0].fake_pregap + context->media->tracks[0].start_lba - 4;
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment Michael Pavone <pavone@retrodev.com> parents: 2096 diff changeset	544 printf("CDD CMD: PLAY, seeking to %u\n", context->seek_pba);
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	545 } else {
2100 539450d905b3 Fix CDD PLAY command and CDD fader sample alignment Michael Pavone <pavone@retrodev.com> parents: 2096 diff changeset	546 puts("CDD CMD: PLAY");
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	547 }
2100 539450d905b3 Fix CDD PLAY command and CDD fader sample alignment Michael Pavone <pavone@retrodev.com> parents: 2096 diff changeset	548 context->status = DS_PLAY;
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	549 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	550 //TODO: CMD_FFWD, CMD_RWD
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	551 case CMD_TRACK_SKIP:
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	552 if (context->status != DS_PLAY && context->status != DS_PAUSE && context->status != DS_DISC_LEADOUT) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	553 context->error_status = DS_CMD_ERROR;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	554 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	555 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	556 if (context->requested_format == SF_TOCT \|\| context->requested_format == SF_TOCN) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	557 context->requested_format = SF_ABSOLUTE;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	558 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	559 if (!context->toc_valid) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	560 context->error_status = DS_CMD_ERROR;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	561 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	562 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	563 {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	564 int32_t to_skip = context->cmd_buffer.b.skip.tracks_highest << 12 \| context->cmd_buffer.b.skip.tracks_midhigh << 8
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	565 \| context->cmd_buffer.b.skip.tracks_midlow << 4 \| context->cmd_buffer.b.skip.tracks_lowest;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	566 if (context->cmd_buffer.b.skip.direction) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	567 to_skip = -to_skip;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	568 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	569 printf("CDD CMD: TRACK_SKIP direction %u, num_tracks %i, delta %i\n", context->cmd_buffer.b.skip.direction, abs(to_skip), to_skip);
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	570 //circumference at 83mm point (roughly half way between inner and outer edge of program area)
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	571 //~ 260.75cm ~ 15 sectors
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	572 context->seek_pba = context->head_pba + to_skip * 15;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	573 context->seeking = 1;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	574 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	575 context->status = DS_TRACKING;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	576 break;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	577 default:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	578 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	579 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	580 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	581
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	582 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	583 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	584 uint32_t cd_cycle = mclks_to_cd_block(cycle);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	585 if (!(gate_array[GAO_CDD_CTRL] & BIT_HOCK)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	586 //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	587 //assum it's actually the clock for now
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	588 for (; context->cycle < cd_cycle; context->cycle += CDD_MCU_DIVIDER) {
2089 0db3af42dd72 Fix some byte order stuff for audio tracks Michael Pavone <pavone@retrodev.com> parents: 2084 diff changeset	589 if (context->cycle >= context->next_byte_cycle) {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	590 cdd_fader_data(fader, 0);
2130 28b6453cf7e3 Emulate CDC sync detection and sync insertion rather than relying on external knowledge about sector offset Michael Pavone <pavone@retrodev.com> parents: 2124 diff changeset	591 lc8951_write_byte(cdc, cd_block_to_mclks(context->cycle), 0, 0);
2089 0db3af42dd72 Fix some byte order stuff for audio tracks Michael Pavone <pavone@retrodev.com> parents: 2084 diff changeset	592 context->next_byte_cycle += BYTE_CLOCKS;
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	593 }
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	594 }
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	595 gate_array[GAO_CDD_CTRL] \|= BIT_MUTE;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	596 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	597 }
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	598 uint32_t next_subcode = context->last_sector_cycle + SECTOR_CLOCKS;
2115 e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	599 uint32_t next_nibble;
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	600 if (context->current_status_nibble > 0) {
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	601 next_nibble = context->last_nibble_cycle + NIBBLE_CLOCKS;
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	602 } else if (!context->current_status_nibble) {
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	603 next_nibble = context->last_sector_cycle + PROCESSING_DELAY;
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	604 if (context->coarse_seek % 3) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	605 next_nibble += SECTOR_CLOCKS * (3 - (context->coarse_seek % 3));
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	606 }
2115 e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	607 } else {
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	608 next_nibble = CYCLE_NEVER;
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	609 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	610 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	611
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	612 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	613 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	614 if (context->cycle >= next_subcode) {
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	615 uint32_t old_coarse = context->coarse_seek;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	616 context->last_sector_cycle = context->cycle;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	617 next_subcode = context->cycle + SECTOR_CLOCKS;
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	618 update_status(context, gate_array);
2115 e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	619 next_nibble = context->cycle + PROCESSING_DELAY;
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	620 if (context->coarse_seek % 3) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	621 next_nibble += SECTOR_CLOCKS * (3 - (context->coarse_seek % 3));
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	622 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	623 context->current_status_nibble = 0;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	624 if (context->next_subcode_int_cycle != CYCLE_NEVER) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	625 context->subcode_int_pending = 1;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	626 }
2142 d9151d0894c7 Fix some CD-ROM emulation issues Michael Pavone <pavone@retrodev.com> parents: 2141 diff changeset	627 if ((context->status == DS_PLAY \|\| context->status == DS_PAUSE) && context->head_pba >= LEADIN_SECTORS && !context->seeking) {
2062 07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	628 context->current_sector_byte = 0;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	629 context->current_subcode_byte = 0;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	630 context->next_subcode_cycle = context->cycle;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	631 context->next_subcode_int_cycle = cd_block_to_mclks(next_subcode);
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	632 } else {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	633 context->next_subcode_int_cycle = CYCLE_NEVER;
2062 07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	634 }
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	635 if (old_coarse != context->coarse_seek) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	636 context->next_int_cycle = cd_block_to_mclks(context->cycle + PROCESSING_DELAY + 7 * NIBBLE_CLOCKS);
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	637 if (context->coarse_seek % 3) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	638 context->next_int_cycle += cd_block_to_mclks(SECTOR_CLOCKS * (3 - (context->coarse_seek % 3)));
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	639 }
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	640 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	641 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	642 if (context->cycle >= next_nibble) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	643 if (context->current_status_nibble == sizeof(cdd_status)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	644 context->current_status_nibble = -1;
2139 11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	645 gate_array[GAO_CDD_CTRL] &= ~BIT_DRS;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	646 if (context->cmd_recv_pending) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	647 context->cmd_recv_pending = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	648 context->current_cmd_nibble = 0;
2139 11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	649 gate_array[GAO_CDD_CTRL] \|= BIT_DTS;
2075 983f57d08eff Fix a couple of CDD bugs Michael Pavone <pavone@retrodev.com> parents: 2073 diff changeset	650 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	651 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	652 context->cmd_recv_wait = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	653 }
2075 983f57d08eff Fix a couple of CDD bugs Michael Pavone <pavone@retrodev.com> parents: 2073 diff changeset	654 next_nibble = CYCLE_NEVER;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	655 } else {
2139 11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	656 gate_array[GAO_CDD_CTRL] \|= BIT_DRS;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	657 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	658 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	659 if (context->current_status_nibble & 1) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	660 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	661 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	662 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	663 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	664 if (context->current_status_nibble == 7) {
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	665 if (!(context->coarse_seek % 3)) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	666 context->int_pending = 1;
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	667 if (context->coarse_seek) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	668 context->next_int_cycle = cd_block_to_mclks(context->cycle + 3 * SECTOR_CLOCKS);
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	669 } else {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	670 context->next_int_cycle = cd_block_to_mclks(context->cycle + SECTOR_CLOCKS);
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	671 }
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	672 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	673 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	674 context->current_status_nibble++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	675 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	676 next_nibble = context->cycle + NIBBLE_CLOCKS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	677 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	678 } else if (context->cycle >= next_cmd_nibble) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	679 if (context->current_cmd_nibble == sizeof(cdd_cmd)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	680 next_cmd_nibble = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	681 context->current_cmd_nibble = -1;
2139 11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	682 gate_array[GAO_CDD_CTRL] &= ~BIT_DTS;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	683 run_command(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	684 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	685 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	686 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	687 ((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	688 context->current_cmd_nibble++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	689 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	690 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	691 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	692 }
2089 0db3af42dd72 Fix some byte order stuff for audio tracks Michael Pavone <pavone@retrodev.com> parents: 2084 diff changeset	693 if (context->cycle >= context->next_byte_cycle) {
2100 539450d905b3 Fix CDD PLAY command and CDD fader sample alignment Michael Pavone <pavone@retrodev.com> parents: 2096 diff changeset	694 if (context->current_sector_byte >= 0 && (!fader->byte_counter \|\| context->current_sector_byte)) {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	695 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	696 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	697 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	698 } else {
2130 28b6453cf7e3 Emulate CDC sync detection and sync insertion rather than relying on external knowledge about sector offset Michael Pavone <pavone@retrodev.com> parents: 2124 diff changeset	699 lc8951_write_byte(cdc, cd_block_to_mclks(context->cycle), 0, 0);
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	700 cdd_fader_data(fader, 0);
2100 539450d905b3 Fix CDD PLAY command and CDD fader sample alignment Michael Pavone <pavone@retrodev.com> parents: 2096 diff changeset	701 if (context->current_sector_byte >= 0) {
539450d905b3 Fix CDD PLAY command and CDD fader sample alignment Michael Pavone <pavone@retrodev.com> parents: 2096 diff changeset	702 next_subcode += BYTE_CLOCKS;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	703 context->last_sector_cycle += BYTE_CLOCKS;
2100 539450d905b3 Fix CDD PLAY command and CDD fader sample alignment Michael Pavone <pavone@retrodev.com> parents: 2096 diff changeset	704 }
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	705 }
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	706 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	707 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	708 }
2089 0db3af42dd72 Fix some byte order stuff for audio tracks Michael Pavone <pavone@retrodev.com> parents: 2084 diff changeset	709 context->next_byte_cycle += BYTE_CLOCKS;
2062 07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	710 }
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	711 if (context->cycle >= context->next_subcode_cycle) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	712 uint8_t byte;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	713 if (!context->current_subcode_byte) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	714 byte = 0x9F;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	715 //This probably happens after the second sync symbol, but doing it here simplifies things a little
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	716 context->current_subcode_dest &= 0x7E;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	717 gate_array[GAO_SUBCODE_ADDR] = (context->current_subcode_dest - 96) & 0x7E;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	718 } else if (context->current_subcode_byte == 1) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	719 byte = 0xFD;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	720 } else {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	721 byte = context->media->read_subcodes(context->media, context->current_subcode_byte - 2);
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	722 }
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	723 int offset = GAO_SUBCODE_START + (context->current_subcode_dest >> 1);
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	724 if (context->current_subcode_dest & 1) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	725 gate_array[offset] &= 0xFF00;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	726 gate_array[offset] \|= byte;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	727 } else {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	728 gate_array[offset] &= 0x00FF;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	729 gate_array[offset] \|= byte << 8;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	730 }
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	731 context->current_subcode_byte++;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	732 if (context->current_subcode_byte == 98) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	733 context->current_subcode_byte = 0;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	734 } else if (context->current_subcode_byte == 32) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	735 gate_array[GAO_SUBCODE_ADDR] \|= 0x80;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	736 }
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	737 context->current_subcode_dest++;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	738 context->current_subcode_dest &= 0x7F;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	739 context->next_subcode_cycle += SUBCODE_CLOCKS;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	740 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	741 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	742 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	743
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	744 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	745 {
2139 11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	746 if (gate_array[GAO_CDD_CTRL] & BIT_DTS) {
11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	747 return;
11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	748 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	749 if (context->cmd_recv_wait) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	750 context->current_cmd_nibble = 0;
2139 11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	751 gate_array[GAO_CDD_CTRL] \|= BIT_DTS;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	752 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	753 context->cmd_recv_wait = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	754 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	755 context->cmd_recv_pending = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	756 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	757 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	758
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	759 void cdd_hock_enabled(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	760 {
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	761 context->last_sector_cycle = context->cycle;
2115 e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	762 context->next_int_cycle = cd_block_to_mclks(context->cycle + SECTOR_CLOCKS + PROCESSING_DELAY + 7 * NIBBLE_CLOCKS);
2152 c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	763 if (context->coarse_seek % 3) {
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	764 context->next_int_cycle += cd_block_to_mclks(SECTOR_CLOCKS * (3 - (context->coarse_seek % 3)));
c3ee42c89b27 More accurate seek times and basic emulation of extended time between CDD interrupts during coarse seeking Michael Pavone <pavone@retrodev.com> parents: 2142 diff changeset	765 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	766 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	767
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	768 void cdd_hock_disabled(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	769 {
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	770 context->last_sector_cycle = CYCLE_NEVER;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	771 context->next_int_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	772 context->last_nibble_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	773 context->current_status_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	774 context->current_cmd_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	775 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	776
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	777 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	778 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	779 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	780 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	781 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	782 } 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	783 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	784 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	785 if (context->next_int_cycle != CYCLE_NEVER) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	786 context->next_int_cycle -= deduction;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	787 }
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	788 if (context->last_sector_cycle != CYCLE_NEVER) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	789 if (context->last_sector_cycle > cd_deduction) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	790 context->last_sector_cycle -= cd_deduction;
2073 c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response Michael Pavone <pavone@retrodev.com> parents: 2067 diff changeset	791 } else {
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	792 context->last_sector_cycle = 0;
2073 c69e42444f96 Fix some cycle adjustment stuff and an off-by one on hte TOCT response Michael Pavone <pavone@retrodev.com> parents: 2067 diff changeset	793 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	794 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	795 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	796 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	797 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	798 } 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	799 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	800 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	801 }
2096 460c93c19146 Fix CDD byte cycle counter deduction that got broken when I fixed the off-by-one on CD-DA Michael Pavone <pavone@retrodev.com> parents: 2095 diff changeset	802 context->next_byte_cycle -= cd_deduction;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	803 if (context->next_subcode_cycle != CYCLE_NEVER) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	804 context->next_subcode_cycle -= cd_deduction;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	805 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	806 }

Mercurial > repos > blastem

annotate cdd_mcu.c @ 2155:6f58af5bd6fa