repos/blastem: cdd_mcu.c annotate

annotate cdd_mcu.c @ 2352:76dfad6a53b5

Fix bug in CD-ROM scrambling algorithm

author	Michael Pavone <pavone@retrodev.com>
date	Wed, 18 Oct 2023 23:27:14 -0700
parents	2025ba21026a
children	c66e051de8a6

rev	line source
2215 a8af8d898a7c Fix windows build for real Michael Pavone <pavone@retrodev.com> parents: 2152 diff changeset	1 #include <stdlib.h>
a8af8d898a7c Fix windows build for real Michael Pavone <pavone@retrodev.com> parents: 2152 diff changeset	2 #include <string.h>
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	3 #include "cdd_mcu.h"
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	4 #include "backend.h"
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	5
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	6 #define SCD_MCLKS 50000000
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	7 #define CD_BLOCK_CLKS 16934400
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	8 #define CDD_MCU_DIVIDER 8
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	9 #define SECTORS_PER_SECOND 75
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	10 #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	11 #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	12 #define BYTE_CLOCKS (SECTOR_CLOCKS/2352) // 96
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	13 #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	14 #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	15
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	16 //lead in start max diameter 46 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	17 //program area start max diameter 50 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	18 //difference 4 mm = 4000 um
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	19 //radius difference 2 mm = 2000 um
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	20 //track pitch 1.6 um
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	21 //1250 physical tracks in between
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	22 //linear speed 1.2 m/s - 1.4 m/s
2347 047253715fd8 Minor fix to seek time calculation Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	23 // 1.2 m = 1200 mm
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	24 // circumference at 46 mm ~ 144.51 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	25 // circumference at 50 mm ~ 157.08 mm
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	26 // avg is 150.795
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	27 // 75 sectors per second
2347 047253715fd8 Minor fix to seek time calculation Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	28 // 16 mm "typical" length of a sector
047253715fd8 Minor fix to seek time calculation Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	29 // ~9.4 sectors per track in lead-in area
047253715fd8 Minor fix to seek time calculation Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	30 #define LEADIN_SECTORS 11780
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	31
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	32 static uint32_t cd_block_to_mclks(uint32_t cycles)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	33 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	34 return ((uint64_t)cycles) * ((uint64_t)SCD_MCLKS) / ((uint64_t)CD_BLOCK_CLKS);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	35 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	36
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	37 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	38 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	39 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	40 }
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 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	43 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	44 context->next_int_cycle = CYCLE_NEVER;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	45 context->next_subcode_int_cycle = CYCLE_NEVER;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	46 context->last_sector_cycle = CYCLE_NEVER;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	47 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	48 context->next_byte_cycle = 0;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	49 context->next_subcode_cycle = CYCLE_NEVER;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	50 context->requested_format = SF_NOTREADY;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	51 context->media = media;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	52 context->current_status_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	53 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	54 context->current_sector_byte = -1;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	55 context->current_subcode_byte = -1;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	56 context->current_subcode_dest = 0;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	57 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	58
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	59 enum {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	60 GAO_CDD_CTRL,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	61 GAO_CDD_STATUS,
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	62 GAO_CDD_CMD = GAO_CDD_STATUS+5,
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	63 GAO_SUBCODE_ADDR = (0x68-0x36)/2,
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	64 GAO_SUBCODE_START = (0x100-0x36)/2
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	65 };
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	66 //GAO_CDD_CTRL
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	67 #define BIT_MUTE 0x100
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	68 #define BIT_HOCK 0x0004
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	69 #define BIT_DRS 0x0002
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	70 #define BIT_DTS 0x0001
2061 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 static uint8_t checksum(uint8_t *vbuffer)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	73 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	74 uint8_t *buffer = vbuffer;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	75 uint8_t sum = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	76 for (int i = 0; i < 9; 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 sum += buffer[i];
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	79 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	80 return (~sum) & 0xF;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	81 }
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	82
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	83 #define MIN_CIRCUMFERENCE 144.51f
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	84 #define MAX_CIRCUMFERENCE 364.42f
2347 047253715fd8 Minor fix to seek time calculation Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	85 #define SECTOR_LENGTH 16.0f
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	86 // max diameter for program area 116 mm
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	87 // circumference ~ 364.42 mm
2347 047253715fd8 Minor fix to seek time calculation Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	88 // ~ 23 sectors per physical track at edge
047253715fd8 Minor fix to seek time calculation Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	89 // ~9 sectors per physical track at start of lead-in
047253715fd8 Minor fix to seek time calculation Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	90 // seek test suggests average somewhere around 54-60 tracks for a long seek, with a peak around 80
047253715fd8 Minor fix to seek time calculation Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	91 // Sonic CD title screen seems to need a much higher value to get reasonable sync
047253715fd8 Minor fix to seek time calculation Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	92 #define COARSE_SEEK_TRACKS 60
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	93 static void handle_seek(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	94 {
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 uint32_t old_coarse = context->coarse_seek;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	96 if (context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	97 if (context->seek_pba == context->head_pba) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	98 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	99 context->coarse_seek = 0;
2095 c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	100 if (context->status == DS_PAUSE) {
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	101 context->pause_pba = context->head_pba;
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	102 }
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	103 } else {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	104 //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	105 //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	106 //things down from this ideal speed I'm curently estimating
2347 047253715fd8 Minor fix to seek time calculation Michael Pavone <pavone@retrodev.com> parents: 2280 diff changeset	107 float circumference = (MAX_CIRCUMFERENCE-MIN_CIRCUMFERENCE) * ((float)context->head_pba) / ((74 * 60 + 41) * SECTORS_PER_SECOND + LEADIN_SECTORS + 22) + MIN_CIRCUMFERENCE;
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	108 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	109 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	110 uint32_t min_seek = sectors_per_track;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	111
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	112 uint32_t old_pba = context->head_pba;
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	113 if (context->seek_pba > context->head_pba) {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	114 uint32_t seek_amount;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	115 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	116 {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	117 if (context->seek_pba - context->head_pba >= seek_amount) {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	118 break;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	119 }
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	120 }
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	121 if (seek_amount >= min_seek) {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	122 context->head_pba += seek_amount;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	123 } else {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	124 context->head_pba++;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	125 }
2067 f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	126 } else {
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	127 uint32_t seek_amount;
2348 2025ba21026a Fix backwards seek calculation Michael Pavone <pavone@retrodev.com> parents: 2347 diff changeset	128 for (seek_amount = max_seek; seek_amount >= min_seek;)
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	129 {
2348 2025ba21026a Fix backwards seek calculation Michael Pavone <pavone@retrodev.com> parents: 2347 diff changeset	130 uint32_t next_seek = seek_amount >> 1;
2025ba21026a Fix backwards seek calculation Michael Pavone <pavone@retrodev.com> parents: 2347 diff changeset	131 if (context->head_pba - context->seek_pba > next_seek) {
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	132 break;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	133 }
2348 2025ba21026a Fix backwards seek calculation Michael Pavone <pavone@retrodev.com> parents: 2347 diff changeset	134 seek_amount = next_seek;
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	135 }
2348 2025ba21026a Fix backwards seek calculation Michael Pavone <pavone@retrodev.com> parents: 2347 diff changeset	136 if (seek_amount >= min_seek && context->head_pba >= seek_amount) {
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	137 context->head_pba -= seek_amount;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	138 } else if (context->head_pba >= min_seek){
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	139 context->head_pba -= min_seek;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	140 } else {
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	141 context->head_pba = 0;
793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	142 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	143 }
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	144 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	145 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 } 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	147 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	148 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	149 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	150 }
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	151 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	152 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	153 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	154
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	155 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	156 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	157 uint32_t seconds = lba / 75;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	158 uint32_t frames = lba % 75;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	159 uint32_t minutes = seconds / 60;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	160 seconds = seconds % 60;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	161 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	162 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	163 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	164 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	165 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	166 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	167 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	168
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	169 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	170 {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	171 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	172 uint32_t prev_pba = context->head_pba;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	173 switch (context->status)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	174 {
2266 5083bc84fd84 Finish seeking after a CDD STOP command is sent Michael Pavone <pavone@retrodev.com> parents: 2215 diff changeset	175 case DS_STOP:
5083bc84fd84 Finish seeking after a CDD STOP command is sent Michael Pavone <pavone@retrodev.com> parents: 2215 diff changeset	176 handle_seek(context);
5083bc84fd84 Finish seeking after a CDD STOP command is sent Michael Pavone <pavone@retrodev.com> parents: 2215 diff changeset	177 break;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	178 case DS_PLAY:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	179 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	180 if (!context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	181 context->head_pba++;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2080 diff changeset	182 }
cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2080 diff changeset	183 if (context->head_pba >= LEADIN_SECTORS) {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	184 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	185 if (!context->seeking && context->media->tracks[track].type == TRACK_AUDIO) {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	186 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE;
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	187 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	188 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	189 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	190 case DS_PAUSE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	191 handle_seek(context);
2095 c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	192 if (!context->seeking) {
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	193 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	194 //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	195 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	196 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	197 //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	198 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	199 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	200 context->head_pba = context->pause_pba - diff;
2095 c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	201 if (context->head_pba < LEADIN_SECTORS) {
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	202 context->head_pba = LEADIN_SECTORS;
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	203 }
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	204 }
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	205 }
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	206 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	207 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	208 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	209 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	210 case DS_TOC_READ:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	211 handle_seek(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	212 if (!context->seeking) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	213 context->head_pba++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	214 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	215 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	216 context->toc_valid = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	217 context->seeking = 1;
2095 c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	218 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	219 context->status = DS_PAUSE;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	220 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	221
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	222 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	223 context->status = DS_NO_DISC;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	224 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	225 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	226 break;
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	227 case DS_TRACKING:
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	228 handle_seek(context);
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	229 if (!context->seeking) {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	230 context->status = DS_PAUSE;
2095 c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	231 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	232 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	233 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	234 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	235 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	236 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	237 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	238 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	239 break;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	240 }
2124 ad346054ca78 Return "not ready" status sometimes when seeking. Fixes issues in multiple games Michael Pavone <pavone@retrodev.com> parents: 2122 diff changeset	241 uint8_t force_not_ready = 0;
2270 827ab6dd534a Adjust when not-ready is returned during coarse seeking to fix some regressions Michael Pavone <pavone@retrodev.com> parents: 2266 diff changeset	242 if (context->coarse_seek && !(context->coarse_seek % 6)) {
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	243 //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	244 //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	245 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	246 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	247 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	248 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	249 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	250 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	251 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	252 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	253 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	254 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	255 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	256 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	257 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	258 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	259 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	260 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	261 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	262 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	263 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	264 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	265 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	266 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	267 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	268 //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	269 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	270 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	271 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	272 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	273 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	274 //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	275 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	276 } else {
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	277 lba -= context->media->tracks[i].start_lba;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	278 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	279 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	280 } 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	281 lba -= context->media->tracks[i].fake_pregap;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	282 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	283 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	284 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	285 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	286 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	287 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	288 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	289 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	290 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	291 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	292 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	293 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	294 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	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 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	297 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	298 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	299 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	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 //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	302 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	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 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	305 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	306 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	307 //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	308 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	309 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	310 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	311 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	312 break;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	313 } 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	314 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	315 }
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.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	318 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	319 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	320 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	321 } else {
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	322 //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	323 //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	324 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	325 }
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements Michael Pavone <pavone@retrodev.com> parents: 2064 diff changeset	326 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	327 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	328 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	329 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	330 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	331 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	332 case SF_TOCO:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	333 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	334 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	335 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	336 {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	337 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	338 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	339 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	340 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	341 } else {
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.format = SF_NOTREADY;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	343 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	344 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	345 case SF_TOCT:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	346 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	347 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	348 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	349 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	350 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	351 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	352 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	353 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	354 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	355 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	356 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	357 case SF_TOCN:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	358 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	359 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	360 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	361 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	362 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	363 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	364 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	365 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	366 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	367 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	368 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	369 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	370 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	371 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	372 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	373 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	374 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	375 }
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	376 break;
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	377 case SF_NOTREADY:
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	378 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	379 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	380 break;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	381 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	382 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	383 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	384 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	385 } 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	386 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	387 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	388 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	389 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	390 } else {
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	391 context->status_buffer.status = context->error_status;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	392 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	393 context->error_status = DS_STOP;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	394 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	395 if (context->requested_format != SF_TOCN) {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	396 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	397 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	398 } else {
91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	399 // 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	400 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	401 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	402 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	403 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	404 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	405 context->status_buffer.status, context->status_buffer.format,
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	406 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	407 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	408 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	409 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	410 );
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 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	413
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	414 static void run_command(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	415 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	416 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	417 if (check != context->cmd_buffer.checksum) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	418 context->error_status = DS_SUM_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	419 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	420 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	421 if (context->cmd_buffer.must_be_zero) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	422 context->error_status = DS_CMD_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	423 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	424 }
2064 91e4d2fe5cd9 Get CDD working well enough to get into BIOS CD player Michael Pavone <pavone@retrodev.com> parents: 2062 diff changeset	425 context->first_cmd_received = 1;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	426 switch (context->cmd_buffer.cmd_type)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	427 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	428 case CMD_NOP:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	429 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	430 case CMD_STOP:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	431 puts("CDD CMD: STOP");
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	432 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	433 context->requested_format = SF_ABSOLUTE;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	434 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	435 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	436 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	437 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	438 context->error_status = DS_CMD_ERROR;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	439 break;
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	440 }
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	441 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	442 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	443 }
07ed42bd7b4c Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator Michael Pavone <pavone@retrodev.com> parents: 2061 diff changeset	444 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	445 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	446 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	447 }
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	448 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	449 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	450 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	451 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	452 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	453 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	454 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	455 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	456 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	457 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	458 );
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	459 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	460 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	461 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	462 }
2141 793715149f16 More accurate seek emulation Michael Pavone <pavone@retrodev.com> parents: 2139 diff changeset	463 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	464 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	465 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	466 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	467 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	468 case CMD_REPORT_REQUEST:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	469 switch (context->cmd_buffer.b.format.status_type)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	470 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	471 case SF_ABSOLUTE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	472 case SF_RELATIVE:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	473 case SF_TRACK:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	474 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	475 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	476 case SF_TOCO:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	477 if (context->toc_valid) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	478 context->requested_format = SF_TOCO;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	479 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	480 context->error_status = DS_CMD_ERROR;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	481 context->requested_format = SF_ABSOLUTE;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	482 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	483 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	484 case SF_TOCT:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	485 if (context->toc_valid) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	486 if (context->status == DS_STOP) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	487 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	488 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	489 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	490 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	491 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	492 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	493 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	494 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	495 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	496 context->requested_format = SF_TOCT;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	497 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	498 case SF_TOCN:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	499 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	500 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	501 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	502 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	503 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	504 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	505 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	506 context->status = DS_TOC_READ;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	507 context->seeking = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	508 context->seek_pba = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	509 context->requested_format = SF_TOCN;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	510 break;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	511 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	512 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	513 break;
2067 f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	514 case CMD_PAUSE:
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	515 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	516 context->error_status = DS_CMD_ERROR;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	517 break;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	518 }
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	519 if (context->requested_format == SF_TOCT \|\| context->requested_format == SF_TOCN) {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	520 context->requested_format = SF_ABSOLUTE;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	521 }
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	522 if (!context->toc_valid) {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	523 context->error_status = DS_CMD_ERROR;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	524 break;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	525 }
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	526 if (context->status == DS_STOP) {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	527 context->seeking = 1;
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	528 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	529 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	530 } else {
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	531 puts("CDD CMD: PAUSE");
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	532 }
f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	533 context->status = DS_PAUSE;
2095 c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	534 if (!context->seeking) {
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	535 context->pause_pba = context->head_pba;
c732dcc9c61b Better simulation of CDD pause behavior Michael Pavone <pavone@retrodev.com> parents: 2089 diff changeset	536 }
2067 f22e04b69272 More CDC/CDD improvements Michael Pavone <pavone@retrodev.com> parents: 2065 diff changeset	537 break;
2084 c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	538 case CMD_PLAY:
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	539 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	540 context->error_status = DS_CMD_ERROR;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	541 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	542 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	543 if (context->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	544 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	545 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	546 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	547 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	548 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	549 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	550 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	551 context->seeking = 1;
2100 539450d905b3 Fix CDD PLAY command and CDD fader sample alignment Michael Pavone <pavone@retrodev.com> parents: 2096 diff changeset	552 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	553 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	554 } else {
2100 539450d905b3 Fix CDD PLAY command and CDD fader sample alignment Michael Pavone <pavone@retrodev.com> parents: 2096 diff changeset	555 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	556 }
2100 539450d905b3 Fix CDD PLAY command and CDD fader sample alignment Michael Pavone <pavone@retrodev.com> parents: 2096 diff changeset	557 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	558 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	559 //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	560 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	561 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	562 context->error_status = DS_CMD_ERROR;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	563 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	564 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	565 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	566 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	567 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	568 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	569 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	570 break;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	571 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	572 {
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	573 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	574 \| 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	575 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	576 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	577 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	578 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	579 //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	580 //~ 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	581 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	582 context->seeking = 1;
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	583 }
c9d3b8e1ea56 Implement a couple more CDD commands force CDDA mute when seeking Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	584 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	585 break;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	586 default:
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	587 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	588 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	589 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	590
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	591 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	592 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	593 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	594 if (!(gate_array[GAO_CDD_CTRL] & BIT_HOCK)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	595 //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	596 //assum it's actually the clock for now
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	597 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	598 if (context->cycle >= context->next_byte_cycle) {
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	599 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	600 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	601 context->next_byte_cycle += BYTE_CLOCKS;
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	602 }
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	603 }
bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	604 gate_array[GAO_CDD_CTRL] \|= BIT_MUTE;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	605 return;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	606 }
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	607 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	608 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	609 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	610 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	611 } else if (!context->current_status_nibble) {
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	612 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	613 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	614 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	615 }
2115 e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	616 } else {
e93ced356a21 Hopefully more accurate relative timing of CDD status and data reaching the CDC Michael Pavone <pavone@retrodev.com> parents: 2100 diff changeset	617 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	618 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	619 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	620
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	621 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	622 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	623 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	624 uint32_t old_coarse = context->coarse_seek;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	625 context->last_sector_cycle = context->cycle;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	626 next_subcode = context->cycle + SECTOR_CLOCKS;
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	627 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	628 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	629 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	630 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	631 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	632 context->current_status_nibble = 0;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	633 if (context->next_subcode_int_cycle != CYCLE_NEVER) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	634 context->subcode_int_pending = 1;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	635 }
2142 d9151d0894c7 Fix some CD-ROM emulation issues Michael Pavone <pavone@retrodev.com> parents: 2141 diff changeset	636 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	637 context->current_sector_byte = 0;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	638 context->current_subcode_byte = 0;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	639 context->next_subcode_cycle = context->cycle;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	640 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	641 } else {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	642 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	643 }
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	644 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	645 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	646 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	647 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	648 }
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	649 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	650 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	651 if (context->cycle >= next_nibble) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	652 if (context->current_status_nibble == sizeof(cdd_status)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	653 context->current_status_nibble = -1;
2139 11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	654 gate_array[GAO_CDD_CTRL] &= ~BIT_DRS;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	655 if (context->cmd_recv_pending) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	656 context->cmd_recv_pending = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	657 context->current_cmd_nibble = 0;
2139 11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	658 gate_array[GAO_CDD_CTRL] \|= BIT_DTS;
2075 983f57d08eff Fix a couple of CDD bugs Michael Pavone <pavone@retrodev.com> parents: 2073 diff changeset	659 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	660 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	661 context->cmd_recv_wait = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	662 }
2075 983f57d08eff Fix a couple of CDD bugs Michael Pavone <pavone@retrodev.com> parents: 2073 diff changeset	663 next_nibble = CYCLE_NEVER;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	664 } else {
2139 11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	665 gate_array[GAO_CDD_CTRL] \|= BIT_DRS;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	666 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	667 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	668 if (context->current_status_nibble & 1) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	669 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	670 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	671 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	672 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	673 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	674 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	675 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	676 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	677 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	678 } 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	679 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	680 }
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	681 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	682 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	683 context->current_status_nibble++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	684 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	685 next_nibble = context->cycle + NIBBLE_CLOCKS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	686 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	687 } else if (context->cycle >= next_cmd_nibble) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	688 if (context->current_cmd_nibble == sizeof(cdd_cmd)) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	689 next_cmd_nibble = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	690 context->current_cmd_nibble = -1;
2139 11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	691 gate_array[GAO_CDD_CTRL] &= ~BIT_DTS;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	692 run_command(context);
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	693 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	694 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	695 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	696 ((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	697 context->current_cmd_nibble++;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	698 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	699 next_cmd_nibble = context->cycle + NIBBLE_CLOCKS;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	700 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	701 }
2089 0db3af42dd72 Fix some byte order stuff for audio tracks Michael Pavone <pavone@retrodev.com> parents: 2084 diff changeset	702 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	703 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	704 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	705 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	706 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	707 } 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	708 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	709 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	710 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	711 next_subcode += BYTE_CLOCKS;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	712 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	713 }
2080 bafb757e1cd2 Implement CD audio Michael Pavone <pavone@retrodev.com> parents: 2079 diff changeset	714 }
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	715 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	716 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	717 }
2089 0db3af42dd72 Fix some byte order stuff for audio tracks Michael Pavone <pavone@retrodev.com> parents: 2084 diff changeset	718 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	719 }
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	720 if (context->cycle >= context->next_subcode_cycle) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	721 uint8_t byte;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	722 if (!context->current_subcode_byte) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	723 byte = 0x9F;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	724 //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	725 context->current_subcode_dest &= 0x7E;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	726 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	727 } else if (context->current_subcode_byte == 1) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	728 byte = 0xFD;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	729 } else {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	730 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	731 }
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	732 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	733 if (context->current_subcode_dest & 1) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	734 gate_array[offset] &= 0xFF00;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	735 gate_array[offset] \|= byte;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	736 } else {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	737 gate_array[offset] &= 0x00FF;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	738 gate_array[offset] \|= byte << 8;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	739 }
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	740 context->current_subcode_byte++;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	741 if (context->current_subcode_byte == 98) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	742 context->current_subcode_byte = 0;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	743 } else if (context->current_subcode_byte == 32) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	744 gate_array[GAO_SUBCODE_ADDR] \|= 0x80;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	745 }
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	746 context->current_subcode_dest++;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	747 context->current_subcode_dest &= 0x7F;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	748 context->next_subcode_cycle += SUBCODE_CLOCKS;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	749 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	750 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	751 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	752
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	753 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	754 {
2139 11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	755 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	756 return;
11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	757 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	758 if (context->cmd_recv_wait) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	759 context->current_cmd_nibble = 0;
2139 11a3d5b00a66 Fix DRS and DTS bits of CDD status Michael Pavone <pavone@retrodev.com> parents: 2130 diff changeset	760 gate_array[GAO_CDD_CTRL] \|= BIT_DTS;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	761 context->last_nibble_cycle = context->cycle;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	762 context->cmd_recv_wait = 0;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	763 } else {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	764 context->cmd_recv_pending = 1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	765 }
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_enabled(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 = 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	771 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	772 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	773 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	774 }
2061 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_hock_disabled(cdd_mcu *context)
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	778 {
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	779 context->last_sector_cycle = CYCLE_NEVER;
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	780 context->next_int_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	781 context->last_nibble_cycle = CYCLE_NEVER;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	782 context->current_status_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	783 context->current_cmd_nibble = -1;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	784 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	785
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	786 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	787 {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	788 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	789 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	790 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	791 } 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	792 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	793 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	794 if (context->next_int_cycle != CYCLE_NEVER) {
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	795 context->next_int_cycle -= deduction;
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	796 }
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	797 if (context->last_sector_cycle != CYCLE_NEVER) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	798 if (context->last_sector_cycle > cd_deduction) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	799 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	800 } else {
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	801 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	802 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	803 }
7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	804 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	805 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	806 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	807 } 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	808 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	809 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	810 }
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	811 context->next_byte_cycle -= cd_deduction;
2116 cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	812 if (context->next_subcode_cycle != CYCLE_NEVER) {
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	813 context->next_subcode_cycle -= cd_deduction;
cd057d6fe030 Initial stab at subcode emulation Michael Pavone <pavone@retrodev.com> parents: 2115 diff changeset	814 }
2061 7c1760b5b3e5 Implemented basic TOC functionality of CDD MCU Michael Pavone <pavone@retrodev.com> parents: diff changeset	815 }
2280 9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	816
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	817 void cdd_mcu_serialize(cdd_mcu context, serialize_buffer buf)
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	818 {
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	819 save_int32(buf, context->cycle);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	820 save_int32(buf, context->next_int_cycle);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	821 save_int32(buf, context->next_subcode_int_cycle);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	822 save_int32(buf, context->last_sector_cycle);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	823 save_int32(buf, context->last_nibble_cycle);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	824 save_int32(buf, context->next_byte_cycle);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	825 save_int32(buf, context->next_subcode_cycle);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	826 save_int8(buf, context->current_status_nibble);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	827 save_int8(buf, context->current_cmd_nibble);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	828 save_int16(buf, context->current_sector_byte);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	829 save_int8(buf, context->current_subcode_byte);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	830 save_int8(buf, context->current_subcode_dest);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	831 save_int32(buf, context->head_pba);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	832 save_int32(buf, context->seek_pba);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	833 save_int32(buf, context->pause_pba);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	834 save_int32(buf, context->coarse_seek);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	835 save_buffer8(buf, (uint8_t *)&context->cmd_buffer, sizeof(context->cmd_buffer));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	836 save_buffer8(buf, (uint8_t *)&context->status_buffer, sizeof(context->status_buffer));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	837 save_int8(buf, context->requested_format);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	838 save_int8(buf, context->status);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	839 save_int8(buf, context->error_status);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	840 save_int8(buf, context->requested_track);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	841 save_int8(buf, context->cmd_recv_wait);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	842 save_int8(buf, context->cmd_recv_pending);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	843 save_int8(buf, context->int_pending);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	844 save_int8(buf, context->subcode_int_pending);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	845 save_int8(buf, context->toc_valid);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	846 save_int8(buf, context->first_cmd_received);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	847 save_int8(buf, context->seeking);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	848 save_int8(buf, context->in_fake_pregap);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	849 }
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	850
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	851 static int sign_extend8(uint8_t value)
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	852 {
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	853 if (value & 0x80) {
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	854 return value \| 0xFFFFFF00;
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	855 } else {
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	856 return value;
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	857 }
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	858 }
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	859
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	860 static int sign_extend16(uint16_t value)
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	861 {
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	862 if (value & 0x8000) {
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	863 return value \| 0xFFFF0000;
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	864 } else {
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	865 return value;
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	866 }
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	867 }
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	868
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	869 void cdd_mcu_deserialize(deserialize_buffer buf, void vcontext)
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	870 {
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	871 cdd_mcu *context = vcontext;
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	872 context->cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	873 context->next_int_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	874 context->next_subcode_int_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	875 context->last_sector_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	876 context->last_nibble_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	877 context->next_byte_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	878 context->next_subcode_cycle = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	879 context->current_status_nibble = sign_extend8(load_int8(buf));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	880 context->current_cmd_nibble = sign_extend8(load_int8(buf));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	881 context->current_sector_byte = sign_extend16(load_int16(buf));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	882 context->current_subcode_byte = sign_extend8(load_int8(buf));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	883 context->current_subcode_dest = sign_extend8(load_int8(buf));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	884 context->head_pba = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	885 context->seek_pba = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	886 context->pause_pba = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	887 context->coarse_seek = load_int32(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	888 load_buffer8(buf, (uint8_t *)&context->cmd_buffer, sizeof(context->cmd_buffer));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	889 load_buffer8(buf, (uint8_t *)&context->status_buffer, sizeof(context->status_buffer));
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	890 context->requested_format = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	891 context->status = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	892 context->error_status = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	893 context->requested_track = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	894 context->cmd_recv_wait = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	895 context->cmd_recv_pending = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	896 context->int_pending = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	897 context->subcode_int_pending = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	898 context->toc_valid = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	899 context->first_cmd_received = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	900 context->seeking = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	901 context->in_fake_pregap = load_int8(buf);
9ead0fe69d9b Implement savestate support for Sega CD Michael Pavone <pavone@retrodev.com> parents: 2270 diff changeset	902 }

Mercurial > repos > blastem

annotate cdd_mcu.c @ 2352:76dfad6a53b5