repos/blastem: cdd_mcu.c annotate

annotate cdd_mcu.c @ 2065:02a9846668d1 segacd

Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements

author	Michael Pavone <pavone@retrodev.com>
date	Sat, 29 Jan 2022 17:43:37 -0800
parents	91e4d2fe5cd9
children	f22e04b69272

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

Mercurial > repos > blastem

annotate cdd_mcu.c @ 2065:02a9846668d1 segacd