repos/blastem: ym2612.c annotate

annotate ym2612.c @ 1798:5278b6e44fc1

Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612

author	Michael Pavone <pavone@retrodev.com>
date	Sun, 24 Mar 2019 19:59:41 -0700
parents	804f13c090b4
children	1d1198f16279

rev	line source
467 140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING Mike Pavone <pavone@retrodev.com> parents: 451 diff changeset	1 /*
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING Mike Pavone <pavone@retrodev.com> parents: 451 diff changeset	2 Copyright 2013 Michael Pavone
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	3 This file is part of BlastEm.
467 140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING Mike Pavone <pavone@retrodev.com> parents: 451 diff changeset	4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING Mike Pavone <pavone@retrodev.com> parents: 451 diff changeset	5 */
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	6 #include <string.h>
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	7 #include <math.h>
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	8 #include <stdio.h>
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	9 #include <stdlib.h>
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	10 #include "ym2612.h"
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	11 #include "render.h"
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	12 #include "wave.h"
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 483 diff changeset	13 #include "blastem.h"
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	14
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	15 //#define DO_DEBUG_PRINT
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	16 #ifdef DO_DEBUG_PRINT
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	17 #define dfprintf fprintf
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	18 #define dfopen(var, fname, mode) var=fopen(fname, mode)
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	19 #else
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	20 #define dfprintf
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	21 #define dfopen(var, fname, mode)
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	22 #endif
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	23
535 aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	24 #define BUSY_CYCLES_ADDRESS 17
aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	25 #define BUSY_CYCLES_DATA_LOW 83
aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	26 #define BUSY_CYCLES_DATA_HIGH 47
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	27 #define OP_UPDATE_PERIOD 144
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	28
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	29 #define BIT_TIMERA_ENABLE 0x1
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	30 #define BIT_TIMERB_ENABLE 0x2
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	31 #define BIT_TIMERA_OVEREN 0x4
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	32 #define BIT_TIMERB_OVEREN 0x8
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	33 #define BIT_TIMERA_RESET 0x10
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	34 #define BIT_TIMERB_RESET 0x20
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	35
845 3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	36 #define BIT_TIMERA_LOAD 0x40
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	37 #define BIT_TIMERB_LOAD 0x80
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	38
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	39 #define BIT_STATUS_TIMERA 0x1
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	40 #define BIT_STATUS_TIMERB 0x2
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	41
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	42 static uint32_t ym_calc_phase_inc(ym2612_context * context, ym_operator * operator, uint32_t op);
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	43
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	44 enum {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	45 PHASE_ATTACK,
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	46 PHASE_DECAY,
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	47 PHASE_SUSTAIN,
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	48 PHASE_RELEASE
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	49 };
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	50
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	51 uint8_t did_tbl_init = 0;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	52 //According to Nemesis, real hardware only uses a 256 entry quarter sine table; however,
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	53 //memory is cheap so using a half sine table will probably save some cycles
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	54 //a full sine table would be nice, but negative numbers don't get along with log2
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	55 #define SINE_TABLE_SIZE 512
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	56 static uint16_t sine_table[SINE_TABLE_SIZE];
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	57 //Similar deal here with the power table for log -> linear conversion
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	58 //According to Nemesis, real hardware only uses a 256 entry table for the fractional part
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	59 //and uses the whole part as a shift amount.
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	60 #define POW_TABLE_SIZE (1 << 13)
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	61 static uint16_t pow_table[POW_TABLE_SIZE];
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	62
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	63 static uint16_t rate_table_base[] = {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	64 //main portion
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	65 0,1,0,1,0,1,0,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	66 0,1,0,1,1,1,0,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	67 0,1,1,1,0,1,1,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	68 0,1,1,1,1,1,1,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	69 //top end
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	70 1,1,1,1,1,1,1,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	71 1,1,1,2,1,1,1,2,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	72 1,2,1,2,1,2,1,2,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	73 1,2,2,2,1,2,2,2,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	74 };
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	75
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	76 static uint16_t rate_table[64*8];
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	77
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	78 static uint8_t lfo_timer_values[] = {108, 77, 71, 67, 62, 44, 8, 5};
c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	79 static uint8_t lfo_pm_base[][8] = {
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	80 {0, 0, 0, 0, 0, 0, 0, 0},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	81 {0, 0, 0, 0, 4, 4, 4, 4},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	82 {0, 0, 0, 4, 4, 4, 8, 8},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	83 {0, 0, 4, 4, 8, 8, 0xc, 0xc},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	84 {0, 0, 4, 8, 8, 8, 0xc,0x10},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	85 {0, 0, 8, 0xc,0x10,0x10,0x14,0x18},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	86 {0, 0,0x10,0x18,0x20,0x20,0x28,0x30},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	87 {0, 0,0x20,0x30,0x40,0x40,0x50,0x60}
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	88 };
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	89 static int16_t lfo_pm_table[128 * 32 * 8];
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	90
930 f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	91 int16_t ams_shift[] = {8, 1, -1, -2};
740 25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	92
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	93 #define MAX_ENVELOPE 0xFFC
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	94 #define YM_DIVIDER 2
374 d42a8a3e4894 Fix YM2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 371 diff changeset	95 #define CYCLE_NEVER 0xFFFFFFFF
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	96
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	97 static uint16_t round_fixed_point(double value, int dec_bits)
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	98 {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	99 return value * (1 << dec_bits) + 0.5;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	100 }
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	101
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	102 static FILE * debug_file = NULL;
c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	103 static uint32_t first_key_on=0;
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	104
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	105 static ym2612_context * log_context = NULL;
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	106
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	107 static void ym_finalize_log()
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	108 {
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	109 if (!log_context) {
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	110 return;
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	111 }
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	112 for (int i = 0; i < NUM_CHANNELS; i++) {
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	113 if (log_context->channels[i].logfile) {
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	114 wave_finalize(log_context->channels[i].logfile);
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	115 }
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	116 }
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	117 log_context = NULL;
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	118 }
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	119
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	120 void ym_adjust_master_clock(ym2612_context * context, uint32_t master_clock)
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	121 {
1555 6ce36c3f250b More audio refactoring in preparation for allowing proper sync to video with dynamic audio rate control Michael Pavone <pavone@retrodev.com> parents: 1551 diff changeset	122 render_audio_adjust_clock(context->audio, master_clock, context->clock_inc * NUM_OPERATORS);
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	123 }
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	124
859 46bb673eed4e Load config file and rom.db from appropriate locations on Android Michael Pavone <pavone@retrodev.com> parents: 853 diff changeset	125 #ifdef __ANDROID__
46bb673eed4e Load config file and rom.db from appropriate locations on Android Michael Pavone <pavone@retrodev.com> parents: 853 diff changeset	126 #define log2(x) (log(x)/log(2))
46bb673eed4e Load config file and rom.db from appropriate locations on Android Michael Pavone <pavone@retrodev.com> parents: 853 diff changeset	127 #endif
46bb673eed4e Load config file and rom.db from appropriate locations on Android Michael Pavone <pavone@retrodev.com> parents: 853 diff changeset	128
1308 1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	129
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	130 #define TIMER_A_MAX 1023
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	131 #define TIMER_B_MAX 255
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	132
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	133 void ym_reset(ym2612_context *context)
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	134 {
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	135 memset(context->part1_regs, 0, sizeof(context->part1_regs));
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	136 memset(context->part2_regs, 0, sizeof(context->part2_regs));
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	137 memset(context->operators, 0, sizeof(context->operators));
1654 4637ab86be8c Preserve WAVE logging FILE * across YM2612 device reset Michael Pavone <pavone@retrodev.com> parents: 1555 diff changeset	138 FILE* savedlogs[NUM_CHANNELS];
4637ab86be8c Preserve WAVE logging FILE * across YM2612 device reset Michael Pavone <pavone@retrodev.com> parents: 1555 diff changeset	139 for (int i = 0; i < NUM_CHANNELS; i++)
4637ab86be8c Preserve WAVE logging FILE * across YM2612 device reset Michael Pavone <pavone@retrodev.com> parents: 1555 diff changeset	140 {
4637ab86be8c Preserve WAVE logging FILE * across YM2612 device reset Michael Pavone <pavone@retrodev.com> parents: 1555 diff changeset	141 savedlogs[i] = context->channels[i].logfile;
4637ab86be8c Preserve WAVE logging FILE * across YM2612 device reset Michael Pavone <pavone@retrodev.com> parents: 1555 diff changeset	142 }
1308 1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	143 memset(context->channels, 0, sizeof(context->channels));
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	144 memset(context->ch3_supp, 0, sizeof(context->ch3_supp));
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	145 context->selected_reg = 0;
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	146 context->csm_keyon = 0;
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	147 context->ch3_mode = 0;
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	148 context->dac_enable = 0;
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	149 context->status = 0;
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	150 context->timer_a_load = 0;
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	151 context->timer_b_load = 0;
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	152 //TODO: Confirm these on hardware
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	153 context->timer_a = TIMER_A_MAX;
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	154 context->timer_b = TIMER_B_MAX;
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	155
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	156 //TODO: Reset LFO state
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	157
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	158 //some games seem to expect that the LR flags start out as 1
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	159 for (int i = 0; i < NUM_CHANNELS; i++) {
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	160 context->channels[i].lr = 0xC0;
1654 4637ab86be8c Preserve WAVE logging FILE * across YM2612 device reset Michael Pavone <pavone@retrodev.com> parents: 1555 diff changeset	161 context->channels[i].logfile = savedlogs[i];
1308 1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	162 }
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	163 context->write_cycle = CYCLE_NEVER;
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	164 for (int i = 0; i < NUM_OPERATORS; i++) {
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	165 context->operators[i].envelope = MAX_ENVELOPE;
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	166 context->operators[i].env_phase = PHASE_RELEASE;
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	167 }
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	168 }
1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	169
1555 6ce36c3f250b More audio refactoring in preparation for allowing proper sync to video with dynamic audio rate control Michael Pavone <pavone@retrodev.com> parents: 1551 diff changeset	170 void ym_init(ym2612_context * context, uint32_t master_clock, uint32_t clock_div, uint32_t options)
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	171 {
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	172 static uint8_t registered_finalize;
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	173 dfopen(debug_file, "ym_debug.txt", "w");
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	174 memset(context, 0, sizeof(*context));
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 379 diff changeset	175 context->clock_inc = clock_div * 6;
1555 6ce36c3f250b More audio refactoring in preparation for allowing proper sync to video with dynamic audio rate control Michael Pavone <pavone@retrodev.com> parents: 1551 diff changeset	176 context->audio = render_audio_source(master_clock, context->clock_inc * NUM_OPERATORS, 2);
1308 1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	177
369 fc820ab1394b Fix left/right enable default value Mike Pavone <pavone@retrodev.com> parents: 365 diff changeset	178 //some games seem to expect that the LR flags start out as 1
fc820ab1394b Fix left/right enable default value Mike Pavone <pavone@retrodev.com> parents: 365 diff changeset	179 for (int i = 0; i < NUM_CHANNELS; i++) {
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	180 if (options & YM_OPT_WAVE_LOG) {
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	181 char fname[64];
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	182 sprintf(fname, "ym_channel_%d.wav", i);
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	183 FILE * f = context->channels[i].logfile = fopen(fname, "wb");
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	184 if (!f) {
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	185 fprintf(stderr, "Failed to open WAVE log file %s for writing\n", fname);
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	186 continue;
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	187 }
1555 6ce36c3f250b More audio refactoring in preparation for allowing proper sync to video with dynamic audio rate control Michael Pavone <pavone@retrodev.com> parents: 1551 diff changeset	188 if (!wave_init(f, master_clock / (context->clock_inc * NUM_OPERATORS), 16, 1)) {
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	189 fclose(f);
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	190 context->channels[i].logfile = NULL;
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	191 }
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	192 }
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	193 }
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	194 if (options & YM_OPT_WAVE_LOG) {
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	195 log_context = context;
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	196 if (!registered_finalize) {
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	197 atexit(ym_finalize_log);
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	198 registered_finalize = 1;
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	199 }
369 fc820ab1394b Fix left/right enable default value Mike Pavone <pavone@retrodev.com> parents: 365 diff changeset	200 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	201 if (!did_tbl_init) {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	202 //populate sine table
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	203 for (int32_t i = 0; i < 512; i++) {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	204 double sine = sin( ((double)(i2+1) / SINE_TABLE_SIZE) M_PI_2 );
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	205
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	206 //table stores 4.8 fixed pointed representation of the base 2 log
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	207 sine_table[i] = round_fixed_point(-log2(sine), 8);
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	208 }
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	209 //populate power table
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	210 for (int32_t i = 0; i < POW_TABLE_SIZE; i++) {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	211 double linear = pow(2, -((double)((i & 0xFF)+1) / 256.0));
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	212 int32_t tmp = round_fixed_point(linear, 11);
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	213 int32_t shift = (i >> 8) - 2;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	214 if (shift < 0) {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	215 tmp <<= 0-shift;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	216 } else {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	217 tmp >>= shift;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	218 }
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	219 pow_table[i] = tmp;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	220 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	221 //populate envelope generator rate table, from small base table
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	222 for (int rate = 0; rate < 64; rate++) {
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	223 for (int cycle = 0; cycle < 8; cycle++) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	224 uint16_t value;
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	225 if (rate < 2) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	226 value = 0;
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	227 } else if (rate >= 60) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	228 value = 8;
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	229 } else if (rate < 8) {
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	230 value = rate_table_base[((rate & 6) == 6 ? 16 : 0) + cycle];
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	231 } else if (rate < 48) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	232 value = rate_table_base[(rate & 0x3) * 8 + cycle];
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	233 } else {
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	234 value = rate_table_base[32 + (rate & 0x3) * 8 + cycle] << ((rate - 48) >> 2);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	235 }
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	236 rate_table[rate * 8 + cycle] = value;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	237 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	238 }
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	239 //populate LFO PM table from small base table
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	240 //seems like there must be a better way to derive this
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	241 for (int freq = 0; freq < 128; freq++) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	242 for (int pms = 0; pms < 8; pms++) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	243 for (int step = 0; step < 32; step++) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	244 int16_t value = 0;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	245 for (int bit = 0x40, shift = 0; bit > 0; bit >>= 1, shift++) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	246 if (freq & bit) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	247 value += lfo_pm_base[pms][(step & 0x8) ? 7-step & 7 : step & 7] >> shift;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	248 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	249 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	250 if (step & 0x10) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	251 value = -value;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	252 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	253 lfo_pm_table[freq * 256 + pms * 32 + step] = value;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	254 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	255 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	256 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	257 }
1308 1b3fe6e03e7b Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon Michael Pavone <pavone@retrodev.com> parents: 1301 diff changeset	258 ym_reset(context);
1798 5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	259 ym_enable_zero_offset(context, 1);
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	260 }
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	261
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	262 void ym_free(ym2612_context *context)
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	263 {
1551 ce1f93be0104 Small cleanup to audio interface between emulation code and renderer backend Michael Pavone <pavone@retrodev.com> parents: 1450 diff changeset	264 render_free_source(context->audio);
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	265 if (context == log_context) {
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	266 ym_finalize_log();
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	267 }
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	268 free(context);
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	269 }
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	270
1798 5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	271 void ym_enable_zero_offset(ym2612_context *context, uint8_t enabled)
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	272 {
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	273 if (enabled) {
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	274 context->zero_offset = 0x70;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	275 context->volume_mult = 79;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	276 context->volume_div = 120;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	277 } else {
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	278 context->zero_offset = 0;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	279 context->volume_mult = 2;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	280 context->volume_div = 3;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	281 }
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	282 }
381 7815ebbbd705 Fix modulation shift value Mike Pavone <pavone@retrodev.com> parents: 380 diff changeset	283 #define YM_MOD_SHIFT 1
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	284
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	285 #define CSM_MODE 0x80
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	286
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	287 #define SSG_ENABLE 8
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	288 #define SSG_INVERT 4
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	289 #define SSG_ALTERNATE 2
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	290 #define SSG_HOLD 1
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	291
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	292 #define SSG_CENTER 0x800
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	293
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	294 static void start_envelope(ym_operator op, ym_channel channel)
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	295 {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	296 //Deal with "infinite" attack rates
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	297 uint8_t rate = op->rates[PHASE_ATTACK];
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	298 if (rate) {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	299 uint8_t ks = channel->keycode >> op->key_scaling;;
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	300 rate = rate*2 + ks;
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	301 }
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	302 if (rate >= 62) {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	303 op->env_phase = PHASE_DECAY;
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	304 op->envelope = 0;
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	305 } else {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	306 op->env_phase = PHASE_ATTACK;
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	307 }
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	308 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	309
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	310 static void keyon(ym_operator op, ym_channel channel)
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	311 {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	312 start_envelope(op, channel);
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	313 op->phase_counter = 0;
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	314 op->inverted = op->ssg & SSG_INVERT;
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	315 }
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	316
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	317 static const uint8_t keyon_bits[] = {0x10, 0x40, 0x20, 0x80};
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	318
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	319 static void keyoff(ym_operator *op)
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	320 {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	321 op->env_phase = PHASE_RELEASE;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	322 if (op->inverted) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	323 //Nemesis says the inversion state doesn't change here, but I don't see how that is observable either way
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	324 op->inverted = 0;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	325 op->envelope = (SSG_CENTER - op->envelope) & MAX_ENVELOPE;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	326 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	327 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	328
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	329 static void csm_keyoff(ym2612_context *context)
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	330 {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	331 context->csm_keyon = 0;
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	332 uint8_t changes = 0xF0 ^ context->channels[2].keyon;
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	333 for (uint8_t op = 24, bit = 0; op < 34; op++, bit++)
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	334 {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	335 if (changes & keyon_bits[bit]) {
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	336 keyoff(context->operators + op);
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	337 }
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	338 }
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	339 }
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	340
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	341 void ym_run(ym2612_context * context, uint32_t to_cycle)
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	342 {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	343 //printf("Running YM2612 from cycle %d to cycle %d\n", context->current_cycle, to_cycle);
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	344 //TODO: Fix channel update order OR remap channels in register write
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 379 diff changeset	345 for (; context->current_cycle < to_cycle; context->current_cycle += context->clock_inc) {
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	346 //Update timers at beginning of 144 cycle period
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	347 if (!context->current_op) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	348 if (context->timer_control & BIT_TIMERA_ENABLE) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	349 if (context->timer_a != TIMER_A_MAX) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	350 context->timer_a++;
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	351 if (context->csm_keyon) {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	352 csm_keyoff(context);
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	353 }
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	354 } else {
845 3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	355 if (context->timer_control & BIT_TIMERA_LOAD) {
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	356 context->timer_control &= ~BIT_TIMERA_LOAD;
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	357 } else if (context->timer_control & BIT_TIMERA_OVEREN) {
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	358 context->status \|= BIT_STATUS_TIMERA;
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	359 }
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	360 context->timer_a = context->timer_a_load;
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	361 if (!context->csm_keyon && context->ch3_mode == CSM_MODE) {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	362 context->csm_keyon = 0xF0;
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	363 uint8_t changes = 0xF0 ^ context->channels[2].keyon;;
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	364 for (uint8_t op = 24, bit = 0; op < 34; op++, bit++)
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	365 {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	366 if (changes & keyon_bits[bit]) {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	367 keyon(context->operators + op, context->channels + 2);
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	368 }
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	369 }
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	370 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	371 }
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	372 }
845 3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	373 if (!context->sub_timer_b) {
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	374 if (context->timer_control & BIT_TIMERB_ENABLE) {
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	375 if (context->timer_b != TIMER_B_MAX) {
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	376 context->timer_b++;
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	377 } else {
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	378 if (context->timer_control & BIT_TIMERB_LOAD) {
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	379 context->timer_control &= ~BIT_TIMERB_LOAD;
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	380 } else if (context->timer_control & BIT_TIMERB_OVEREN) {
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	381 context->status \|= BIT_STATUS_TIMERB;
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	382 }
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	383 context->timer_b = context->timer_b_load;
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	384 }
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	385 }
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	386 }
845 3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	387 context->sub_timer_b += 0x10;
740 25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	388 //Update LFO
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	389 if (context->lfo_enable) {
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	390 if (context->lfo_counter) {
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	391 context->lfo_counter--;
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	392 } else {
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	393 context->lfo_counter = lfo_timer_values[context->lfo_freq];
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	394 context->lfo_am_step += 2;
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	395 context->lfo_am_step &= 0xFE;
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	396 context->lfo_pm_step = context->lfo_am_step / 8;
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	397 }
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	398 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	399 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	400 //Update Envelope Generator
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	401 if (!(context->current_op % 3)) {
62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	402 uint32_t env_cyc = context->env_counter;
62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	403 uint32_t op = context->current_env_op;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	404 ym_operator * operator = context->operators + op;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	405 ym_channel * channel = context->channels + op/4;
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	406 uint8_t rate;
929 0ee8cfcc06d1 Change where decay to sustain transition happens to match hardware when decay rate is slow or 0 Michael Pavone <pavone@retrodev.com> parents: 884 diff changeset	407 if (operator->env_phase == PHASE_DECAY && operator->envelope >= operator->sustain_level) {
0ee8cfcc06d1 Change where decay to sustain transition happens to match hardware when decay rate is slow or 0 Michael Pavone <pavone@retrodev.com> parents: 884 diff changeset	408 //operator->envelope = operator->sustain_level;
0ee8cfcc06d1 Change where decay to sustain transition happens to match hardware when decay rate is slow or 0 Michael Pavone <pavone@retrodev.com> parents: 884 diff changeset	409 operator->env_phase = PHASE_SUSTAIN;
0ee8cfcc06d1 Change where decay to sustain transition happens to match hardware when decay rate is slow or 0 Michael Pavone <pavone@retrodev.com> parents: 884 diff changeset	410 }
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	411 rate = operator->rates[operator->env_phase];
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	412 if (rate) {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	413 uint8_t ks = channel->keycode >> operator->key_scaling;;
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	414 rate = rate*2 + ks;
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	415 if (rate > 63) {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	416 rate = 63;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	417 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	418 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	419 uint32_t cycle_shift = rate < 0x30 ? ((0x2F - rate) >> 2) : 0;
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	420 if (first_key_on) {
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	421 dfprintf(debug_file, "Operator: %d, env rate: %d (2*%d+%d), env_cyc: %d, cycle_shift: %d, env_cyc & ((1 << cycle_shift) - 1): %d\n", op, rate, operator->rates[operator->env_phase], channel->keycode >> operator->key_scaling,env_cyc, cycle_shift, env_cyc & ((1 << cycle_shift) - 1));
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	422 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	423 if (!(env_cyc & ((1 << cycle_shift) - 1))) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	424 uint32_t update_cycle = env_cyc >> cycle_shift & 0x7;
852 5de8759b87af Fix some bugs in the attack phase and sustain level in the envelope generator Michael Pavone <pavone@retrodev.com> parents: 851 diff changeset	425 uint16_t envelope_inc = rate_table[rate * 8 + update_cycle];
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	426 if (operator->env_phase == PHASE_ATTACK) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	427 //this can probably be optimized to a single shift rather than a multiply + shift
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	428 if (first_key_on) {
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	429 dfprintf(debug_file, "Changing op %d envelope %d by %d(%d * %d) in attack phase\n", op, operator->envelope, (~operator->envelope * envelope_inc) >> 4, ~operator->envelope, envelope_inc);
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	430 }
513 24ebabd89162 Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	431 uint16_t old_env = operator->envelope;
852 5de8759b87af Fix some bugs in the attack phase and sustain level in the envelope generator Michael Pavone <pavone@retrodev.com> parents: 851 diff changeset	432 operator->envelope += ((~operator->envelope * envelope_inc) >> 4) & 0xFFFFFFFC;
513 24ebabd89162 Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	433 if (operator->envelope > old_env) {
24ebabd89162 Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	434 //Handle overflow
24ebabd89162 Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	435 operator->envelope = 0;
24ebabd89162 Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles Michael Pavone <pavone@retrodev.com> parents: 505 diff changeset	436 }
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	437 if (!operator->envelope) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	438 operator->env_phase = PHASE_DECAY;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	439 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	440 } else {
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	441 if (first_key_on) {
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	442 dfprintf(debug_file, "Changing op %d envelope %d by %d in %s phase\n", op, operator->envelope, envelope_inc,
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	443 operator->env_phase == PHASE_SUSTAIN ? "sustain" : (operator->env_phase == PHASE_DECAY ? "decay": "release"));
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	444 }
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	445 if (operator->ssg) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	446 if (operator->envelope < SSG_CENTER) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	447 envelope_inc *= 4;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	448 } else {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	449 envelope_inc = 0;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	450 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	451 }
852 5de8759b87af Fix some bugs in the attack phase and sustain level in the envelope generator Michael Pavone <pavone@retrodev.com> parents: 851 diff changeset	452 //envelope value is 10-bits, but it will be used as a 4.8 value
5de8759b87af Fix some bugs in the attack phase and sustain level in the envelope generator Michael Pavone <pavone@retrodev.com> parents: 851 diff changeset	453 operator->envelope += envelope_inc << 2;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	454 //clamp to max attenuation value
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	455 if (
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	456 operator->envelope > MAX_ENVELOPE
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	457 \|\| (operator->env_phase == PHASE_RELEASE && operator->envelope >= SSG_CENTER)
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	458 ) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	459 operator->envelope = MAX_ENVELOPE;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	460 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	461 }
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	462 }
62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	463 context->current_env_op++;
62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	464 if (context->current_env_op == NUM_OPERATORS) {
62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	465 context->current_env_op = 0;
62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	466 context->env_counter++;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	467 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	468 }
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	469
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	470 //Update Phase Generator
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	471 uint32_t channel = context->current_op / 4;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	472 if (channel != 5 \|\| !context->dac_enable) {
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	473 uint32_t op = context->current_op;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	474 //printf("updating operator %d of channel %d\n", op, channel);
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	475 ym_operator * operator = context->operators + op;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	476 ym_channel * chan = context->channels + channel;
396 09328dbe6700 Fix output of algorithm 4 and make some other minor YM2612 core improvements Mike Pavone <pavone@retrodev.com> parents: 386 diff changeset	477 uint16_t phase = operator->phase_counter >> 10 & 0x3FF;
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	478 operator->phase_counter += ym_calc_phase_inc(context, operator, context->current_op);
371 0f8a759f1ff4 Use signed ints for things that represent signed values in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 370 diff changeset	479 int16_t mod = 0;
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	480 if (op & 3) {
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	481 if (operator->mod_src[0]) {
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	482 mod = *operator->mod_src[0];
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	483 if (operator->mod_src[1]) {
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	484 mod += *
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	485 operator->mod_src[1];
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	486 }
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	487 mod >>= YM_MOD_SHIFT;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	488 }
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	489 } else {
377 da8d53dc914b Initial stab at feedback Mike Pavone <pavone@retrodev.com> parents: 376 diff changeset	490 if (chan->feedback) {
527 7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	491 mod = (chan->op1_old + operator->output) >> (10-chan->feedback);
377 da8d53dc914b Initial stab at feedback Mike Pavone <pavone@retrodev.com> parents: 376 diff changeset	492 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	493 }
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	494 uint16_t env = operator->envelope;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	495 if (operator->ssg) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	496 if (env >= SSG_CENTER) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	497 if (operator->ssg & SSG_ALTERNATE) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	498 if (operator->env_phase != PHASE_RELEASE && (
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	499 !(operator->ssg & SSG_HOLD) \|\| ((operator->ssg ^ operator->inverted) & SSG_INVERT) == 0
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	500 )) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	501 operator->inverted ^= SSG_INVERT;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	502 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	503 } else if (!(operator->ssg & SSG_HOLD)) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	504 phase = operator->phase_counter = 0;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	505 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	506 if (
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	507 (operator->env_phase == PHASE_DECAY \|\| operator->env_phase == PHASE_SUSTAIN)
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	508 && !(operator->ssg & SSG_HOLD)
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	509 ) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	510 start_envelope(operator, chan);
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	511 env = operator->envelope;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	512 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	513 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	514 if (operator->inverted) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	515 env = (SSG_CENTER - env) & MAX_ENVELOPE;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	516 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	517 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	518 env += operator->total_level;
740 25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	519 if (operator->am) {
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	520 uint16_t base_am = (context->lfo_am_step & 0x80 ? context->lfo_am_step : ~context->lfo_am_step) & 0x7E;
930 f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	521 if (ams_shift[chan->ams] >= 0) {
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	522 env += base_am >> ams_shift[chan->ams];
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	523 } else {
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	524 env += base_am << (-ams_shift[chan->ams]);
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	525 }
740 25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	526 }
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	527 if (env > MAX_ENVELOPE) {
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	528 env = MAX_ENVELOPE;
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	529 }
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	530 if (first_key_on) {
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	531 dfprintf(debug_file, "op %d, base phase: %d, mod: %d, sine: %d, out: %d\n", op, phase, mod, sine_table[(phase+mod) & 0x1FF], pow_table[sine_table[phase & 0x1FF] + env]);
5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	532 }
527 7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	533 //if ((channel != 0 && channel != 4) \|\| chan->algorithm != 5) {
7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	534 phase += mod;
7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	535 //}
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	536
371 0f8a759f1ff4 Use signed ints for things that represent signed values in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 370 diff changeset	537 int16_t output = pow_table[sine_table[phase & 0x1FF] + env];
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	538 if (phase & 0x200) {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	539 output = -output;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	540 }
527 7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	541 if (op % 4 == 0) {
7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	542 chan->op1_old = operator->output;
7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	543 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	544 operator->output = output;
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	545 //Update the channel output if we've updated all operators
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	546 if (op % 4 == 3) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	547 if (chan->algorithm < 4) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	548 chan->output = operator->output;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	549 } else if(chan->algorithm == 4) {
396 09328dbe6700 Fix output of algorithm 4 and make some other minor YM2612 core improvements Mike Pavone <pavone@retrodev.com> parents: 386 diff changeset	550 chan->output = operator->output + context->operators[channel * 4 + 2].output;
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	551 } else {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	552 output = 0;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	553 for (uint32_t op = ((chan->algorithm == 7) ? 0 : 1) + channel4; op < (channel+1)4; op++) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	554 output += context->operators[op].output;
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	555 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	556 chan->output = output;
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	557 }
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	558 if (first_key_on) {
371 0f8a759f1ff4 Use signed ints for things that represent signed values in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 370 diff changeset	559 int16_t value = context->channels[channel].output & 0x3FE0;
0f8a759f1ff4 Use signed ints for things that represent signed values in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 370 diff changeset	560 if (value & 0x2000) {
0f8a759f1ff4 Use signed ints for things that represent signed values in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 370 diff changeset	561 value \|= 0xC000;
0f8a759f1ff4 Use signed ints for things that represent signed values in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 370 diff changeset	562 }
1798 5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	563 dfprintf(debug_file, "channel %d output: %d\n", channel, (value * context->volume_mult) / context->volume_div);
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	564 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	565 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	566 //puts("operator update done");
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	567 }
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	568 context->current_op++;
396 09328dbe6700 Fix output of algorithm 4 and make some other minor YM2612 core improvements Mike Pavone <pavone@retrodev.com> parents: 386 diff changeset	569 if (context->current_op == NUM_OPERATORS) {
09328dbe6700 Fix output of algorithm 4 and make some other minor YM2612 core improvements Mike Pavone <pavone@retrodev.com> parents: 386 diff changeset	570 context->current_op = 0;
965 5257e85364ed Implemented linear resampling and low pass filter for the YM2612 Michael Pavone <pavone@retrodev.com> parents: 936 diff changeset	571
5257e85364ed Implemented linear resampling and low pass filter for the YM2612 Michael Pavone <pavone@retrodev.com> parents: 936 diff changeset	572 int16_t left = 0, right = 0;
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	573 for (int i = 0; i < NUM_CHANNELS; i++) {
521 7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	574 int16_t value = context->channels[i].output;
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	575 if (value > 0x1FE0) {
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	576 value = 0x1FE0;
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	577 } else if (value < -0x1FF0) {
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	578 value = -0x1FF0;
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	579 } else {
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	580 value &= 0x3FE0;
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	581 if (value & 0x2000) {
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	582 value \|= 0xC000;
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	583 }
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 379 diff changeset	584 }
1798 5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	585 if (value >= 0) {
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	586 value += context->zero_offset;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	587 } else {
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	588 value -= context->zero_offset;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	589 }
1555 6ce36c3f250b More audio refactoring in preparation for allowing proper sync to video with dynamic audio rate control Michael Pavone <pavone@retrodev.com> parents: 1551 diff changeset	590 if (context->channels[i].logfile) {
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	591 fwrite(&value, sizeof(value), 1, context->channels[i].logfile);
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	592 }
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	593 if (context->channels[i].lr & 0x80) {
1798 5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	594 left += (value * context->volume_mult) / context->volume_div;
380 1c8d74f2ab0b Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run. Mike Pavone <pavone@retrodev.com> parents: 379 diff changeset	595 }
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	596 if (context->channels[i].lr & 0x40) {
1798 5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	597 right += (value * context->volume_mult) / context->volume_div;
483 3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	598 }
3e1573fa22cf Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	599 }
1555 6ce36c3f250b More audio refactoring in preparation for allowing proper sync to video with dynamic audio rate control Michael Pavone <pavone@retrodev.com> parents: 1551 diff changeset	600 render_put_stereo_sample(context->audio, left, right);
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	601 }
965 5257e85364ed Implemented linear resampling and low pass filter for the YM2612 Michael Pavone <pavone@retrodev.com> parents: 936 diff changeset	602
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	603 }
535 aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	604 if (context->current_cycle >= context->write_cycle + (context->busy_cycles * context->clock_inc / 6)) {
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	605 context->status &= 0x7F;
374 d42a8a3e4894 Fix YM2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 371 diff changeset	606 context->write_cycle = CYCLE_NEVER;
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	607 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	608 //printf("Done running YM2612 at cycle %d\n", context->current_cycle, to_cycle);
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	609 }
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	610
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	611 void ym_address_write_part1(ym2612_context * context, uint8_t address)
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	612 {
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	613 //printf("address_write_part1: %X\n", address);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	614 context->selected_reg = address;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	615 context->selected_part = 0;
535 aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	616 context->write_cycle = context->current_cycle;
aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	617 context->busy_cycles = BUSY_CYCLES_ADDRESS;
650 55b550fe8891 Set the busy flag after a YM-2612 address write Michael Pavone <pavone@retrodev.com> parents: 535 diff changeset	618 context->status \|= 0x80;
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	619 }
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	620
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	621 void ym_address_write_part2(ym2612_context * context, uint8_t address)
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	622 {
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	623 //printf("address_write_part2: %X\n", address);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	624 context->selected_reg = address;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	625 context->selected_part = 1;
535 aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	626 context->write_cycle = context->current_cycle;
aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	627 context->busy_cycles = BUSY_CYCLES_ADDRESS;
650 55b550fe8891 Set the busy flag after a YM-2612 address write Michael Pavone <pavone@retrodev.com> parents: 535 diff changeset	628 context->status \|= 0x80;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	629 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	630
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	631 static uint8_t fnum_to_keycode[] = {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	632 //F11 = 0
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	633 0,0,0,0,0,0,0,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	634 //F11 = 1
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	635 2,3,3,3,3,3,3,3
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	636 };
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	637
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	638 //table courtesy of Nemesis
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	639 static uint32_t detune_table[][4] = {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	640 {0, 0, 1, 2}, //0 (0x00)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	641 {0, 0, 1, 2}, //1 (0x01)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	642 {0, 0, 1, 2}, //2 (0x02)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	643 {0, 0, 1, 2}, //3 (0x03)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	644 {0, 1, 2, 2}, //4 (0x04)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	645 {0, 1, 2, 3}, //5 (0x05)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	646 {0, 1, 2, 3}, //6 (0x06)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	647 {0, 1, 2, 3}, //7 (0x07)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	648 {0, 1, 2, 4}, //8 (0x08)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	649 {0, 1, 3, 4}, //9 (0x09)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	650 {0, 1, 3, 4}, //10 (0x0A)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	651 {0, 1, 3, 5}, //11 (0x0B)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	652 {0, 2, 4, 5}, //12 (0x0C)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	653 {0, 2, 4, 6}, //13 (0x0D)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	654 {0, 2, 4, 6}, //14 (0x0E)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	655 {0, 2, 5, 7}, //15 (0x0F)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	656 {0, 2, 5, 8}, //16 (0x10)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	657 {0, 3, 6, 8}, //17 (0x11)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	658 {0, 3, 6, 9}, //18 (0x12)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	659 {0, 3, 7,10}, //19 (0x13)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	660 {0, 4, 8,11}, //20 (0x14)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	661 {0, 4, 8,12}, //21 (0x15)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	662 {0, 4, 9,13}, //22 (0x16)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	663 {0, 5,10,14}, //23 (0x17)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	664 {0, 5,11,16}, //24 (0x18)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	665 {0, 6,12,17}, //25 (0x19)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	666 {0, 6,13,19}, //26 (0x1A)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	667 {0, 7,14,20}, //27 (0x1B)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	668 {0, 8,16,22}, //28 (0x1C)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	669 {0, 8,16,22}, //29 (0x1D)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	670 {0, 8,16,22}, //30 (0x1E)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	671 {0, 8,16,22}
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	672 }; //31 (0x1F)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	673
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	674 static uint32_t ym_calc_phase_inc(ym2612_context * context, ym_operator * operator, uint32_t op)
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	675 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	676 uint32_t chan_num = op / 4;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	677 //printf("ym_update_phase_inc \| channel: %d, op: %d\n", chan_num, op);
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	678 //base frequency
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	679 ym_channel * channel = context->channels + chan_num;
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	680 uint32_t inc, detune;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	681 if (chan_num == 2 && context->ch3_mode && (op < (2*4 + 3))) {
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	682 //supplemental fnum registers are in a different order than normal slot paramters
936 f1a8124ad881 Fix register to operator mapping for channel 3 special mode and actually get it right this time Michael Pavone <pavone@retrodev.com> parents: 935 diff changeset	683 int index = op-2*4;
f1a8124ad881 Fix register to operator mapping for channel 3 special mode and actually get it right this time Michael Pavone <pavone@retrodev.com> parents: 935 diff changeset	684 if (index < 2) {
f1a8124ad881 Fix register to operator mapping for channel 3 special mode and actually get it right this time Michael Pavone <pavone@retrodev.com> parents: 935 diff changeset	685 index ^= 1;
f1a8124ad881 Fix register to operator mapping for channel 3 special mode and actually get it right this time Michael Pavone <pavone@retrodev.com> parents: 935 diff changeset	686 }
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	687 inc = context->ch3_supp[index].fnum;
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	688 if (channel->pms) {
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	689 inc = inc * 2 + lfo_pm_table[(inc & 0x7F0) * 16 + channel->pms + context->lfo_pm_step];
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	690 }
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	691 if (!context->ch3_supp[index].block) {
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	692 inc >>= 1;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	693 } else {
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	694 inc <<= (context->ch3_supp[index].block-1);
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	695 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	696 //detune
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	697 detune = detune_table[context->ch3_supp[index].keycode][operator->detune & 0x3];
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	698 } else {
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	699 inc = channel->fnum;
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	700 if (channel->pms) {
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	701 inc = inc * 2 + lfo_pm_table[(inc & 0x7F0) * 16 + channel->pms + context->lfo_pm_step];
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	702 }
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	703 if (!channel->block) {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	704 inc >>= 1;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	705 } else {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	706 inc <<= (channel->block-1);
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	707 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	708 //detune
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	709 detune = detune_table[channel->keycode][operator->detune & 0x3];
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	710 }
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	711 if (channel->pms) {
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	712 inc >>= 1;
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	713 }
739 2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	714 if (operator->detune & 0x4) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	715 inc -= detune;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	716 //this can underflow, mask to 17-bit result
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	717 inc &= 0x1FFFF;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	718 } else {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	719 inc += detune;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	720 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	721 //multiple
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	722 if (operator->multiple) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	723 inc *= operator->multiple;
739 2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	724 inc &= 0xFFFFF;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	725 } else {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	726 //0.5
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	727 inc >>= 1;
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	728 }
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	729 //printf("phase_inc for operator %d: %d, block: %d, fnum: %d, detune: %d, multiple: %d\n", op, inc, channel->block, channel->fnum, detune, operator->multiple);
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	730 return inc;
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	731 }
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	732
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	733 void ym_data_write(ym2612_context * context, uint8_t value)
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	734 {
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	735 if (context->selected_reg >= YM_REG_END) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	736 return;
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	737 }
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	738 if (context->selected_part) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	739 if (context->selected_reg < YM_PART2_START) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	740 return;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	741 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	742 context->part2_regs[context->selected_reg - YM_PART2_START] = value;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	743 } else {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	744 if (context->selected_reg < YM_PART1_START) {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	745 return;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	746 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	747 context->part1_regs[context->selected_reg - YM_PART1_START] = value;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	748 }
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	749 dfprintf(debug_file, "write of %X to reg %X in part %d\n", value, context->selected_reg, context->selected_part+1);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	750 if (context->selected_reg < 0x30) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	751 //Shared regs
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	752 switch (context->selected_reg)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	753 {
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	754 //TODO: Test reg
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	755 case REG_LFO:
532 666210adf87b Comment out LFO debug printf Mike Pavone <pavone@retrodev.com> parents: 527 diff changeset	756 /*if ((value & 0x8) && !context->lfo_enable) {
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	757 printf("LFO Enabled, Freq: %d\n", value & 0x7);
532 666210adf87b Comment out LFO debug printf Mike Pavone <pavone@retrodev.com> parents: 527 diff changeset	758 }*/
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	759 context->lfo_enable = value & 0x8;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	760 if (!context->lfo_enable) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	761 context->lfo_am_step = context->lfo_pm_step = 0;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	762 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	763 context->lfo_freq = value & 0x7;
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	764
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	765 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	766 case REG_TIMERA_HIGH:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	767 context->timer_a_load &= 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	768 context->timer_a_load \|= value << 2;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	769 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	770 case REG_TIMERA_LOW:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	771 context->timer_a_load &= 0xFFFC;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	772 context->timer_a_load \|= value & 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	773 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	774 case REG_TIMERB:
845 3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	775 context->timer_b_load = value;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	776 break;
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	777 case REG_TIME_CTRL: {
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	778 if (value & BIT_TIMERA_ENABLE && !(context->timer_control & BIT_TIMERA_ENABLE)) {
845 3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	779 context->timer_a = TIMER_A_MAX;
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	780 context->timer_control \|= BIT_TIMERA_LOAD;
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	781 }
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	782 if (value & BIT_TIMERB_ENABLE && !(context->timer_control & BIT_TIMERB_ENABLE)) {
845 3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	783 context->timer_b = TIMER_B_MAX;
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	784 context->timer_control \|= BIT_TIMERB_LOAD;
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	785 }
845 3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	786 context->timer_control &= (BIT_TIMERA_LOAD \| BIT_TIMERB_LOAD);
3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	787 context->timer_control \|= value & 0xF;
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	788 if (value & BIT_TIMERA_RESET) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	789 context->status &= ~BIT_STATUS_TIMERA;
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	790 }
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	791 if (value & BIT_TIMERB_RESET) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	792 context->status &= ~BIT_STATUS_TIMERB;
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	793 }
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	794 if (context->ch3_mode == CSM_MODE && (value & 0xC0) != CSM_MODE && context->csm_keyon) {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	795 csm_keyoff(context);
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	796 }
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	797 context->ch3_mode = value & 0xC0;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	798 break;
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	799 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	800 case REG_KEY_ONOFF: {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	801 uint8_t channel = value & 0x7;
386 6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	802 if (channel != 3 && channel != 7) {
6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	803 if (channel > 2) {
6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	804 channel--;
6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	805 }
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	806 uint8_t changes = channel == 2
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	807 ? (value \| context->csm_keyon) ^ (context->channels[channel].keyon \| context->csm_keyon)
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	808 : value ^ context->channels[channel].keyon;
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	809 context->channels[channel].keyon = value & 0xF0;
851 b10cf2c921ad Fix mapping of key on/off reg bits to operators Michael Pavone <pavone@retrodev.com> parents: 848 diff changeset	810 for (uint8_t op = channel * 4, bit = 0; op < (channel + 1) * 4; op++, bit++) {
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	811 if (changes & keyon_bits[bit]) {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	812 if (value & keyon_bits[bit]) {
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	813 first_key_on = 1;
e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	814 //printf("Key On for operator %d in channel %d\n", op, channel);
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	815 keyon(context->operators + op, context->channels + channel);
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	816 } else {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	817 //printf("Key Off for operator %d in channel %d\n", op, channel);
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	818 keyoff(context->operators + op);
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	819 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	820 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	821 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	822 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	823 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	824 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	825 case REG_DAC:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	826 if (context->dac_enable) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	827 context->channels[5].output = (((int16_t)value) - 0x80) << 6;
396 09328dbe6700 Fix output of algorithm 4 and make some other minor YM2612 core improvements Mike Pavone <pavone@retrodev.com> parents: 386 diff changeset	828 //printf("DAC Write %X(%d) @ %d\n", value, context->channels[5].output, context->current_cycle);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	829 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	830 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	831 case REG_DAC_ENABLE:
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	832 //printf("DAC Enable: %X\n", value);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	833 context->dac_enable = value & 0x80;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	834 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	835 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	836 } else if (context->selected_reg < 0xA0) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	837 //part
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	838 uint8_t op = context->selected_part ? (NUM_OPERATORS/2) : 0;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	839 //channel in part
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	840 if ((context->selected_reg & 0x3) != 0x3) {
370 5f215603d001 Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase. Mike Pavone <pavone@retrodev.com> parents: 369 diff changeset	841 op += 4 * (context->selected_reg & 0x3) + ((context->selected_reg & 0xC) / 4);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	842 //printf("write targets operator %d (%d of channel %d)\n", op, op % 4, op / 4);
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	843 ym_operator * operator = context->operators + op;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	844 switch (context->selected_reg & 0xF0)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	845 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	846 case REG_DETUNE_MULT:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	847 operator->detune = value >> 4 & 0x7;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	848 operator->multiple = value & 0xF;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	849 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	850 case REG_TOTAL_LEVEL:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	851 operator->total_level = (value & 0x7F) << 5;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	852 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	853 case REG_ATTACK_KS:
376 f6def5cdf1b4 Fix key scaling Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	854 operator->key_scaling = 3 - (value >> 6);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	855 operator->rates[PHASE_ATTACK] = value & 0x1F;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	856 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	857 case REG_DECAY_AM:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	858 //TODO: AM flag for LFO
739 2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	859 operator->am = value & 0x80;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	860 operator->rates[PHASE_DECAY] = value & 0x1F;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	861 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	862 case REG_SUSTAIN_RATE:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	863 operator->rates[PHASE_SUSTAIN] = value & 0x1F;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	864 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	865 case REG_S_LVL_R_RATE:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	866 operator->rates[PHASE_RELEASE] = (value & 0xF) << 1 \| 1;
852 5de8759b87af Fix some bugs in the attack phase and sustain level in the envelope generator Michael Pavone <pavone@retrodev.com> parents: 851 diff changeset	867 operator->sustain_level = (value & 0xF0) << 3;
5de8759b87af Fix some bugs in the attack phase and sustain level in the envelope generator Michael Pavone <pavone@retrodev.com> parents: 851 diff changeset	868 if (operator->sustain_level == 0x780) {
5de8759b87af Fix some bugs in the attack phase and sustain level in the envelope generator Michael Pavone <pavone@retrodev.com> parents: 851 diff changeset	869 operator->sustain_level = MAX_ENVELOPE;
5de8759b87af Fix some bugs in the attack phase and sustain level in the envelope generator Michael Pavone <pavone@retrodev.com> parents: 851 diff changeset	870 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	871 break;
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	872 case REG_SSG_EG:
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	873 if (!(value & SSG_ENABLE)) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	874 value = 0;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	875 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	876 if ((value ^ operator->ssg) & SSG_INVERT) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	877 operator->inverted ^= SSG_INVERT;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	878 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	879 operator->ssg = value;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	880 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	881 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	882 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	883 } else {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	884 uint8_t channel = context->selected_reg & 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	885 if (channel != 3) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	886 if (context->selected_part) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	887 channel += 3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	888 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	889 //printf("write targets channel %d\n", channel);
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	890 switch (context->selected_reg & 0xFC)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	891 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	892 case REG_FNUM_LOW:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	893 context->channels[channel].block = context->channels[channel].block_fnum_latch >> 3 & 0x7;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	894 context->channels[channel].fnum = (context->channels[channel].block_fnum_latch & 0x7) << 8 \| value;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	895 context->channels[channel].keycode = context->channels[channel].block << 2 \| fnum_to_keycode[context->channels[channel].fnum >> 7];
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	896 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	897 case REG_BLOCK_FNUM_H:{
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	898 context->channels[channel].block_fnum_latch = value;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	899 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	900 }
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	901 case REG_FNUM_LOW_CH3:
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	902 if (channel < 3) {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	903 context->ch3_supp[channel].block = context->ch3_supp[channel].block_fnum_latch >> 3 & 0x7;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	904 context->ch3_supp[channel].fnum = (context->ch3_supp[channel].block_fnum_latch & 0x7) << 8 \| value;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	905 context->ch3_supp[channel].keycode = context->ch3_supp[channel].block << 2 \| fnum_to_keycode[context->ch3_supp[channel].fnum >> 7];
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	906 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	907 break;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	908 case REG_BLOCK_FN_CH3:
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	909 if (channel < 3) {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	910 context->ch3_supp[channel].block_fnum_latch = value;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	911 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	912 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	913 case REG_ALG_FEEDBACK:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	914 context->channels[channel].algorithm = value & 0x7;
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	915 switch (context->channels[channel].algorithm)
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	916 {
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	917 case 0:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	918 //operator 3 modulated by operator 2
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	919 context->operators[channel4+1].mod_src[0] = &context->operators[channel4+2].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	920 context->operators[channel*4+1].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	921
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	922 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	923 context->operators[channel4+2].mod_src[0] = &context->operators[channel4+0].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	924
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	925 //operator 4 modulated by operator 3
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	926 context->operators[channel4+3].mod_src[0] = &context->operators[channel4+1].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	927 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	928 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	929 case 1:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	930 //operator 3 modulated by operator 1+2
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	931 context->operators[channel4+1].mod_src[0] = &context->operators[channel4+0].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	932 context->operators[channel4+1].mod_src[1] = &context->operators[channel4+2].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	933
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	934 //operator 2 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	935 context->operators[channel*4+2].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	936
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	937 //operator 4 modulated by operator 3
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	938 context->operators[channel4+3].mod_src[0] = &context->operators[channel4+1].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	939 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	940 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	941 case 2:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	942 //operator 3 modulated by operator 2
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	943 context->operators[channel4+1].mod_src[0] = &context->operators[channel4+2].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	944 context->operators[channel*4+1].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	945
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	946 //operator 2 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	947 context->operators[channel*4+2].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	948
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	949 //operator 4 modulated by operator 1+3
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	950 context->operators[channel4+3].mod_src[0] = &context->operators[channel4+0].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	951 context->operators[channel4+3].mod_src[1] = &context->operators[channel4+1].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	952 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	953 case 3:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	954 //operator 3 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	955 context->operators[channel*4+1].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	956 context->operators[channel*4+1].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	957
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	958 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	959 context->operators[channel4+2].mod_src[0] = &context->operators[channel4+0].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	960
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	961 //operator 4 modulated by operator 2+3
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	962 context->operators[channel4+3].mod_src[0] = &context->operators[channel4+2].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	963 context->operators[channel4+3].mod_src[1] = &context->operators[channel4+1].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	964 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	965 case 4:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	966 //operator 3 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	967 context->operators[channel*4+1].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	968 context->operators[channel*4+1].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	969
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	970 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	971 context->operators[channel4+2].mod_src[0] = &context->operators[channel4+0].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	972
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	973 //operator 4 modulated by operator 3
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	974 context->operators[channel4+3].mod_src[0] = &context->operators[channel4+1].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	975 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	976 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	977 case 5:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	978 //operator 3 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	979 context->operators[channel4+1].mod_src[0] = &context->operators[channel4+0].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	980 context->operators[channel*4+1].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	981
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	982 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	983 context->operators[channel4+2].mod_src[0] = &context->operators[channel4+0].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	984
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	985 //operator 4 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	986 context->operators[channel4+3].mod_src[0] = &context->operators[channel4+0].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	987 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	988 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	989 case 6:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	990 //operator 3 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	991 context->operators[channel*4+1].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	992 context->operators[channel*4+1].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	993
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	994 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	995 context->operators[channel4+2].mod_src[0] = &context->operators[channel4+0].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	996
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	997 //operator 4 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	998 context->operators[channel*4+3].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	999 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1000 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1001 case 7:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1002 //everything is an output so no modulation (except for op 1 feedback)
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1003 context->operators[channel*4+1].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1004 context->operators[channel*4+1].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1005
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1006 context->operators[channel*4+2].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1007
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1008 context->operators[channel*4+3].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1009 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1010 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1011 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1012 context->channels[channel].feedback = value >> 3 & 0x7;
527 7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	1013 //printf("Algorithm %d, feedback %d for channel %d\n", value & 0x7, value >> 3 & 0x7, channel);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1014 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1015 case REG_LR_AMS_PMS:
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	1016 context->channels[channel].pms = (value & 0x7) * 32;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1017 context->channels[channel].ams = value >> 4 & 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1018 context->channels[channel].lr = value & 0xC0;
369 fc820ab1394b Fix left/right enable default value Mike Pavone <pavone@retrodev.com> parents: 365 diff changeset	1019 //printf("Write of %X to LR_AMS_PMS reg for channel %d\n", value, channel);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1020 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1021 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1022 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1023 }
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	1024
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1025 context->write_cycle = context->current_cycle;
535 aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	1026 context->busy_cycles = context->selected_reg < 0xA0 ? BUSY_CYCLES_DATA_LOW : BUSY_CYCLES_DATA_HIGH;
374 d42a8a3e4894 Fix YM2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 371 diff changeset	1027 context->status \|= 0x80;
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	1028 }
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	1029
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	1030 uint8_t ym_read_status(ym2612_context * context)
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	1031 {
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	1032 return context->status;
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	1033 }
a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	1034
739 2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1035 void ym_print_channel_info(ym2612_context *context, int channel)
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1036 {
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1037 ym_channel *chan = context->channels + channel;
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1038 printf("\n*Channel %d*\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1039 "Algorithm: %d\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1040 "Feedback: %d\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1041 "Pan: %s\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1042 "AMS: %d\n"
845 3a18b5f63afc Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track. Michael Pavone <pavone@retrodev.com> parents: 740 diff changeset	1043 "PMS: %d\n",
739 2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1044 channel+1, chan->algorithm, chan->feedback,
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1045 chan->lr == 0xC0 ? "LR" : chan->lr == 0x80 ? "L" : chan->lr == 0x40 ? "R" : "",
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1046 chan->ams, chan->pms);
930 f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1047 if (channel == 2) {
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1048 printf(
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1049 "Mode: %X: %s\n",
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1050 context->ch3_mode, context->ch3_mode ? "special" : "normal");
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1051 }
739 2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1052 for (int operator = channel * 4; operator < channel * 4+4; operator++)
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1053 {
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1054 int dispnum = operator - channel * 4 + 1;
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1055 if (dispnum == 2) {
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1056 dispnum = 3;
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1057 } else if (dispnum == 3) {
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1058 dispnum = 2;
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1059 }
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1060 ym_operator *op = context->operators + operator;
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1061 printf("\nOperator %d:\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1062 " Multiple: %d\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1063 " Detune: %d\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1064 " Total Level: %d\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1065 " Attack Rate: %d\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1066 " Key Scaling: %d\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1067 " Decay Rate: %d\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1068 " Sustain Level: %d\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1069 " Sustain Rate: %d\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1070 " Release Rate: %d\n"
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1071 " Amplitude Modulation %s\n",
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1072 dispnum, op->multiple, op->detune, op->total_level,
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1073 op->rates[PHASE_ATTACK], op->key_scaling, op->rates[PHASE_DECAY],
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1074 op->sustain_level, op->rates[PHASE_SUSTAIN], op->rates[PHASE_RELEASE],
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1075 op->am ? "On" : "Off");
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1076 }
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1077 }
2317bdca03b4 Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation Michael Pavone <pavone@retrodev.com> parents: 738 diff changeset	1078
930 f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1079 void ym_print_timer_info(ym2612_context *context)
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1080 {
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1081 printf("*Timer A*\n"
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1082 "Current Value: %d\n"
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1083 "Load Value: %d\n"
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1084 "Triggered: %s\n"
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1085 "Enabled: %s\n\n",
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1086 context->timer_a,
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1087 context->timer_a_load,
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1088 context->status & BIT_STATUS_TIMERA ? "yes" : "no",
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1089 context->timer_control & BIT_TIMERA_ENABLE ? "yes" : "no");
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1090 printf("*Timer B*\n"
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1091 "Current Value: %d\n"
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1092 "Load Value: %d\n"
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1093 "Triggered: %s\n"
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1094 "Enabled: %s\n\n",
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1095 context->timer_b,
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1096 context->timer_b_load,
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1097 context->status & BIT_STATUS_TIMERB ? "yes" : "no",
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1098 context->timer_control & BIT_TIMERB_ENABLE ? "yes" : "no");
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1099 }
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1100
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1101 void ym_serialize(ym2612_context context, serialize_buffer buf)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1102 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1103 save_buffer8(buf, context->part1_regs, YM_PART1_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1104 save_buffer8(buf, context->part2_regs, YM_PART2_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1105 for (int i = 0; i < NUM_OPERATORS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1106 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1107 save_int32(buf, context->operators[i].phase_counter);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1108 save_int16(buf, context->operators[i].envelope);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1109 save_int16(buf, context->operators[i].output);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1110 save_int8(buf, context->operators[i].env_phase);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1111 save_int8(buf, context->operators[i].inverted);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1112 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1113 for (int i = 0; i < NUM_CHANNELS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1114 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1115 save_int16(buf, context->channels[i].output);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1116 save_int16(buf, context->channels[i].op1_old);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1117 //Due to the latching behavior, these need to be saved
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1118 //even though duplicate info is probably in the regs array
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1119 save_int8(buf, context->channels[i].block);
1450 08bc099a622f Save entirety of fnum register, not just the low 8 bits Michael Pavone <pavone@retrodev.com> parents: 1447 diff changeset	1120 save_int16(buf, context->channels[i].fnum);
1447 a094815b1168 Save and restore YM2612 timer control and keyon/off state in native save states Michael Pavone <pavone@retrodev.com> parents: 1427 diff changeset	1121 save_int8(buf, context->channels[i].keyon);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1122 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1123 for (int i = 0; i < 3; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1124 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1125 //Due to the latching behavior, these need to be saved
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1126 //even though duplicate info is probably in the regs array
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1127 save_int8(buf, context->ch3_supp[i].block);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1128 save_int8(buf, context->ch3_supp[i].fnum);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1129 }
1447 a094815b1168 Save and restore YM2612 timer control and keyon/off state in native save states Michael Pavone <pavone@retrodev.com> parents: 1427 diff changeset	1130 save_int8(buf, context->timer_control);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1131 save_int16(buf, context->timer_a);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1132 save_int8(buf, context->timer_b);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1133 save_int8(buf, context->sub_timer_b);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1134 save_int16(buf, context->env_counter);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1135 save_int8(buf, context->current_op);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1136 save_int8(buf, context->current_env_op);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1137 save_int8(buf, context->lfo_counter);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1138 save_int8(buf, context->csm_keyon);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1139 save_int8(buf, context->status);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1140 save_int8(buf, context->selected_reg);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1141 save_int8(buf, context->selected_part);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1142 save_int32(buf, context->current_cycle);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1143 save_int32(buf, context->write_cycle);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1144 save_int32(buf, context->busy_cycles);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1145 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1146
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1147 void ym_deserialize(deserialize_buffer buf, void vcontext)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1148 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1149 ym2612_context *context = vcontext;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1150 uint8_t temp_regs[YM_PART1_REGS];
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1151 load_buffer8(buf, temp_regs, YM_PART1_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1152 context->selected_part = 0;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1153 for (int i = 0; i < YM_PART1_REGS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1154 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1155 uint8_t reg = YM_PART1_START + i;
1447 a094815b1168 Save and restore YM2612 timer control and keyon/off state in native save states Michael Pavone <pavone@retrodev.com> parents: 1427 diff changeset	1156 if (reg == REG_TIME_CTRL) {
a094815b1168 Save and restore YM2612 timer control and keyon/off state in native save states Michael Pavone <pavone@retrodev.com> parents: 1427 diff changeset	1157 context->ch3_mode = temp_regs[i] & 0xC0;
a094815b1168 Save and restore YM2612 timer control and keyon/off state in native save states Michael Pavone <pavone@retrodev.com> parents: 1427 diff changeset	1158 } else if (reg != REG_FNUM_LOW && reg != REG_KEY_ONOFF) {
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1159 context->selected_reg = reg;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1160 ym_data_write(context, temp_regs[i]);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1161 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1162 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1163 load_buffer8(buf, temp_regs, YM_PART2_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1164 context->selected_part = 1;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1165 for (int i = 0; i < YM_PART2_REGS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1166 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1167 uint8_t reg = YM_PART2_START + i;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1168 if (reg != REG_FNUM_LOW) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1169 context->selected_reg = reg;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1170 ym_data_write(context, temp_regs[i]);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1171 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1172 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1173 for (int i = 0; i < NUM_OPERATORS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1174 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1175 context->operators[i].phase_counter = load_int32(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1176 context->operators[i].envelope = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1177 context->operators[i].output = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1178 context->operators[i].env_phase = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1179 if (context->operators[i].env_phase > PHASE_RELEASE) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1180 context->operators[i].env_phase = PHASE_RELEASE;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1181 }
1450 08bc099a622f Save entirety of fnum register, not just the low 8 bits Michael Pavone <pavone@retrodev.com> parents: 1447 diff changeset	1182 context->operators[i].inverted = load_int8(buf) != 0 ? SSG_INVERT : 0;
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1183 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1184 for (int i = 0; i < NUM_CHANNELS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1185 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1186 context->channels[i].output = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1187 context->channels[i].op1_old = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1188 context->channels[i].block = load_int8(buf);
1450 08bc099a622f Save entirety of fnum register, not just the low 8 bits Michael Pavone <pavone@retrodev.com> parents: 1447 diff changeset	1189 context->channels[i].fnum = load_int16(buf);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1190 context->channels[i].keycode = context->channels[i].block << 2 \| fnum_to_keycode[context->channels[i].fnum >> 7];
1447 a094815b1168 Save and restore YM2612 timer control and keyon/off state in native save states Michael Pavone <pavone@retrodev.com> parents: 1427 diff changeset	1191 context->channels[i].keyon = load_int8(buf);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1192 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1193 for (int i = 0; i < 3; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1194 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1195 context->ch3_supp[i].block = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1196 context->ch3_supp[i].fnum = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1197 context->ch3_supp[i].keycode = context->ch3_supp[i].block << 2 \| fnum_to_keycode[context->ch3_supp[i].fnum >> 7];
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1198 }
1447 a094815b1168 Save and restore YM2612 timer control and keyon/off state in native save states Michael Pavone <pavone@retrodev.com> parents: 1427 diff changeset	1199 context->timer_control = load_int8(buf);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1200 context->timer_a = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1201 context->timer_b = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1202 context->sub_timer_b = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1203 context->env_counter = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1204 context->current_op = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1205 if (context->current_op >= NUM_OPERATORS) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1206 context->current_op = 0;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1207 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1208 context->current_env_op = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1209 if (context->current_env_op >= NUM_OPERATORS) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1210 context->current_env_op = 0;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1211 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1212 context->lfo_counter = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1213 context->csm_keyon = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1214 context->status = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1215 context->selected_reg = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1216 context->selected_part = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1217 context->current_cycle = load_int32(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1218 context->write_cycle = load_int32(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1219 context->busy_cycles = load_int32(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1220 }

Mercurial > repos > blastem

annotate ym2612.c @ 1798:5278b6e44fc1