repos/blastem: ym2612.c annotate

annotate ym2612.c @ 1569:0ec89dadb36d

Add code for loading PNG images. Added 360 controller image. WIP work on gamepad mapping UI

author	Michael Pavone <pavone@retrodev.com>
date	Thu, 19 Apr 2018 00:51:10 -0700
parents	6ce36c3f250b
children	4637ab86be8c

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));
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	138 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	139 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	140 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	141 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	142 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	143 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	144 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	145 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	146 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	147 //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	148 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	149 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	150
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 //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	152
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 //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	154 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	155 context->channels[i].lr = 0xC0;
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 }
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 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	158 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	159 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	160 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	161 }
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
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	164 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	165 {
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	166 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	167 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	168 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	169 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	170 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	171
369 fc820ab1394b Fix left/right enable default value Mike Pavone <pavone@retrodev.com> parents: 365 diff changeset	172 //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	173 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	174 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	175 char fname[64];
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	176 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	177 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	178 if (!f) {
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	179 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	180 continue;
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	181 }
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	182 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	183 fclose(f);
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	184 context->channels[i].logfile = NULL;
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	185 }
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	186 }
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	187 }
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	188 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	189 log_context = context;
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	190 if (!registered_finalize) {
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	191 atexit(ym_finalize_log);
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	192 registered_finalize = 1;
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	193 }
369 fc820ab1394b Fix left/right enable default value Mike Pavone <pavone@retrodev.com> parents: 365 diff changeset	194 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	195 if (!did_tbl_init) {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	196 //populate sine table
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	197 for (int32_t i = 0; i < 512; i++) {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	198 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	199
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	200 //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	201 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	202 }
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	203 //populate power table
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	204 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	205 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	206 int32_t tmp = round_fixed_point(linear, 11);
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	207 int32_t shift = (i >> 8) - 2;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	208 if (shift < 0) {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	209 tmp <<= 0-shift;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	210 } else {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	211 tmp >>= shift;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	212 }
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	213 pow_table[i] = tmp;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	214 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	215 //populate envelope generator rate table, from small base table
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	216 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	217 for (int cycle = 0; cycle < 8; cycle++) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	218 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	219 if (rate < 2) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	220 value = 0;
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	221 } else if (rate >= 60) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	222 value = 8;
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	223 } 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	224 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	225 } else if (rate < 48) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	226 value = rate_table_base[(rate & 0x3) * 8 + cycle];
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	227 } 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	228 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	229 }
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	230 rate_table[rate * 8 + cycle] = value;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	231 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	232 }
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	233 //populate LFO PM table from small base table
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	234 //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	235 for (int freq = 0; freq < 128; freq++) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	236 for (int pms = 0; pms < 8; pms++) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	237 for (int step = 0; step < 32; step++) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	238 int16_t value = 0;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	239 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	240 if (freq & bit) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	241 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	242 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	243 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	244 if (step & 0x10) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	245 value = -value;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	246 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	247 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	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 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	251 }
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	252 ym_reset(context);
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	253 }
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	254
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	255 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	256 {
1551 ce1f93be0104 Small cleanup to audio interface between emulation code and renderer backend Michael Pavone <pavone@retrodev.com> parents: 1450 diff changeset	257 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	258 if (context == log_context) {
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	259 ym_finalize_log();
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	260 }
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	261 free(context);
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	262 }
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	263
522 6a14c5a95648 Adjust PSG and YM-2612 volume to be closer to the real console Michael Pavone <pavone@retrodev.com> parents: 521 diff changeset	264 #define YM_VOLUME_MULTIPLIER 2
6a14c5a95648 Adjust PSG and YM-2612 volume to be closer to the real console Michael Pavone <pavone@retrodev.com> parents: 521 diff changeset	265 #define YM_VOLUME_DIVIDER 3
381 7815ebbbd705 Fix modulation shift value Mike Pavone <pavone@retrodev.com> parents: 380 diff changeset	266 #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	267
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	268 #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	269
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	270 #define SSG_ENABLE 8
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	271 #define SSG_INVERT 4
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	272 #define SSG_ALTERNATE 2
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	273 #define SSG_HOLD 1
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	274
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	275 #define SSG_CENTER 0x800
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	276
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	277 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	278 {
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	279 //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	280 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	281 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	282 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	283 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	284 }
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 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	286 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	287 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	288 } 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	289 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	290 }
1301 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
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	293 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	294 {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	295 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	296 op->phase_counter = 0;
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	297 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	298 }
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
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 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	301
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	302 static void keyoff(ym_operator *op)
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	303 {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	304 op->env_phase = PHASE_RELEASE;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	305 if (op->inverted) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	306 //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	307 op->inverted = 0;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	308 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	309 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	310 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	311
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	312 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	313 {
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	314 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	315 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	316 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	317 {
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 if (changes & keyon_bits[bit]) {
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	319 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	320 }
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	321 }
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	322 }
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	323
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	324 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	325 {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	326 //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	327 //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	328 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	329 //Update timers at beginning of 144 cycle period
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	330 if (!context->current_op) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	331 if (context->timer_control & BIT_TIMERA_ENABLE) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	332 if (context->timer_a != TIMER_A_MAX) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	333 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	334 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	335 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	336 }
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	337 } 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	338 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	339 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	340 } else if (context->timer_control & BIT_TIMERA_OVEREN) {
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	341 context->status \|= BIT_STATUS_TIMERA;
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	342 }
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	343 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	344 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	345 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	346 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	347 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	348 {
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	349 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	350 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	351 }
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 }
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 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	354 }
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	355 }
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	356 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	357 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	358 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	359 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	360 } 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	361 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	362 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	363 } 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	364 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	365 }
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	366 context->timer_b = context->timer_b_load;
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	367 }
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	368 }
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	369 }
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	370 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	371 //Update LFO
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	372 if (context->lfo_enable) {
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	373 if (context->lfo_counter) {
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	374 context->lfo_counter--;
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	375 } else {
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	376 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	377 context->lfo_am_step += 2;
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	378 context->lfo_am_step &= 0xFE;
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	379 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	380 }
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	381 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	382 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	383 //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	384 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	385 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	386 uint32_t op = context->current_env_op;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	387 ym_operator * operator = context->operators + op;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	388 ym_channel * channel = context->channels + op/4;
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	389 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	390 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	391 //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	392 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	393 }
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	394 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	395 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	396 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	397 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	398 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	399 rate = 63;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	400 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	401 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	402 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	403 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	404 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	405 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	406 if (!(env_cyc & ((1 << cycle_shift) - 1))) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	407 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	408 uint16_t envelope_inc = rate_table[rate * 8 + update_cycle];
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	409 if (operator->env_phase == PHASE_ATTACK) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	410 //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	411 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	412 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	413 }
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	414 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	415 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	416 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	417 //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	418 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	419 }
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 (!operator->envelope) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	421 operator->env_phase = PHASE_DECAY;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	422 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	423 } 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	424 if (first_key_on) {
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	425 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	426 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	427 }
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	428 if (operator->ssg) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	429 if (operator->envelope < SSG_CENTER) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	430 envelope_inc *= 4;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	431 } else {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	432 envelope_inc = 0;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	433 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	434 }
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	435 //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	436 operator->envelope += envelope_inc << 2;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	437 //clamp to max attenuation value
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	438 if (
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	439 operator->envelope > MAX_ENVELOPE
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	440 \|\| (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	441 ) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	442 operator->envelope = MAX_ENVELOPE;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	443 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	444 }
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	445 }
62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	446 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	447 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	448 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	449 context->env_counter++;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	450 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	451 }
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	452
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	453 //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	454 uint32_t channel = context->current_op / 4;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	455 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	456 uint32_t op = context->current_op;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	457 //printf("updating operator %d of channel %d\n", op, channel);
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	458 ym_operator * operator = context->operators + op;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	459 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	460 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	461 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	462 int16_t mod = 0;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	463 switch (op % 4)
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	464 {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	465 case 0://Operator 1
377 da8d53dc914b Initial stab at feedback Mike Pavone <pavone@retrodev.com> parents: 376 diff changeset	466 if (chan->feedback) {
527 7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	467 mod = (chan->op1_old + operator->output) >> (10-chan->feedback);
377 da8d53dc914b Initial stab at feedback Mike Pavone <pavone@retrodev.com> parents: 376 diff changeset	468 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	469 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	470 case 1://Operator 3
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	471 switch(chan->algorithm)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	472 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	473 case 0:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	474 case 2:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	475 //modulate by operator 2
379 3218e2f8d685 Make shift value of operator output to modulation input a define Mike Pavone <pavone@retrodev.com> parents: 378 diff changeset	476 mod = context->operators[op+1].output >> YM_MOD_SHIFT;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	477 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	478 case 1:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	479 //modulate by operator 1+2
379 3218e2f8d685 Make shift value of operator output to modulation input a define Mike Pavone <pavone@retrodev.com> parents: 378 diff changeset	480 mod = (context->operators[op-1].output + context->operators[op+1].output) >> YM_MOD_SHIFT;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	481 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	482 case 5:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	483 //modulate by operator 1
379 3218e2f8d685 Make shift value of operator output to modulation input a define Mike Pavone <pavone@retrodev.com> parents: 378 diff changeset	484 mod = context->operators[op-1].output >> YM_MOD_SHIFT;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	485 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	486 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	487 case 2://Operator 2
406 b1bc1947d949 Fix modulation condition for operator 2 Mike Pavone <pavone@retrodev.com> parents: 403 diff changeset	488 if (chan->algorithm != 1 && chan->algorithm != 2 && chan->algorithm != 7) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	489 //modulate by Operator 1
379 3218e2f8d685 Make shift value of operator output to modulation input a define Mike Pavone <pavone@retrodev.com> parents: 378 diff changeset	490 mod = context->operators[op-2].output >> YM_MOD_SHIFT;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	491 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	492 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	493 case 3://Operator 4
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	494 switch(chan->algorithm)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	495 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	496 case 0:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	497 case 1:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	498 case 4:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	499 //modulate by operator 3
379 3218e2f8d685 Make shift value of operator output to modulation input a define Mike Pavone <pavone@retrodev.com> parents: 378 diff changeset	500 mod = context->operators[op-2].output >> YM_MOD_SHIFT;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	501 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	502 case 2:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	503 //modulate by operator 1+3
379 3218e2f8d685 Make shift value of operator output to modulation input a define Mike Pavone <pavone@retrodev.com> parents: 378 diff changeset	504 mod = (context->operators[op-3].output + context->operators[op-2].output) >> YM_MOD_SHIFT;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	505 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	506 case 3:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	507 //modulate by operator 2+3
379 3218e2f8d685 Make shift value of operator output to modulation input a define Mike Pavone <pavone@retrodev.com> parents: 378 diff changeset	508 mod = (context->operators[op-1].output + context->operators[op-2].output) >> YM_MOD_SHIFT;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	509 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	510 case 5:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	511 //modulate by operator 1
379 3218e2f8d685 Make shift value of operator output to modulation input a define Mike Pavone <pavone@retrodev.com> parents: 378 diff changeset	512 mod = context->operators[op-3].output >> YM_MOD_SHIFT;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	513 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	514 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	515 break;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	516 }
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	517 uint16_t env = operator->envelope;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	518 if (operator->ssg) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	519 if (env >= SSG_CENTER) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	520 if (operator->ssg & SSG_ALTERNATE) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	521 if (operator->env_phase != PHASE_RELEASE && (
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	522 !(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	523 )) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	524 operator->inverted ^= SSG_INVERT;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	525 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	526 } else if (!(operator->ssg & SSG_HOLD)) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	527 phase = operator->phase_counter = 0;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	528 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	529 if (
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	530 (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	531 && !(operator->ssg & SSG_HOLD)
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	532 ) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	533 start_envelope(operator, chan);
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	534 env = operator->envelope;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	535 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	536 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	537 if (operator->inverted) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	538 env = (SSG_CENTER - env) & MAX_ENVELOPE;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	539 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	540 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	541 env += operator->total_level;
740 25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	542 if (operator->am) {
25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	543 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	544 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	545 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	546 } 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	547 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	548 }
740 25c9e9d39997 Fix LFO counter update speed and implement amplitude modulation Michael Pavone <pavone@retrodev.com> parents: 739 diff changeset	549 }
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	550 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	551 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	552 }
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	553 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	554 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	555 }
527 7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	556 //if ((channel != 0 && channel != 4) \|\| chan->algorithm != 5) {
7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	557 phase += mod;
7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	558 //}
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	559
371 0f8a759f1ff4 Use signed ints for things that represent signed values in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 370 diff changeset	560 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	561 if (phase & 0x200) {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	562 output = -output;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	563 }
527 7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	564 if (op % 4 == 0) {
7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	565 chan->op1_old = operator->output;
7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	566 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	567 operator->output = output;
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	568 //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	569 if (op % 4 == 3) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	570 if (chan->algorithm < 4) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	571 chan->output = operator->output;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	572 } 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	573 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	574 } else {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	575 output = 0;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	576 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	577 output += context->operators[op].output;
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	578 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	579 chan->output = output;
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	580 }
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	581 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	582 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	583 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	584 value \|= 0xC000;
0f8a759f1ff4 Use signed ints for things that represent signed values in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 370 diff changeset	585 }
522 6a14c5a95648 Adjust PSG and YM-2612 volume to be closer to the real console Michael Pavone <pavone@retrodev.com> parents: 521 diff changeset	586 dfprintf(debug_file, "channel %d output: %d\n", channel, (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER);
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	587 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	588 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	589 //puts("operator update done");
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	590 }
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	591 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	592 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	593 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	594
5257e85364ed Implemented linear resampling and low pass filter for the YM2612 Michael Pavone <pavone@retrodev.com> parents: 936 diff changeset	595 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	596 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	597 int16_t value = context->channels[i].output;
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	598 if (value > 0x1FE0) {
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	599 value = 0x1FE0;
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	600 } else if (value < -0x1FF0) {
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	601 value = -0x1FF0;
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	602 } else {
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	603 value &= 0x3FE0;
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	604 if (value & 0x2000) {
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	605 value \|= 0xC000;
7565ec2ac652 Fix overflow handling on FM channel output Michael Pavone <pavone@retrodev.com> parents: 513 diff changeset	606 }
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	607 }
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	608 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	609 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	610 }
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	611 if (context->channels[i].lr & 0x80) {
965 5257e85364ed Implemented linear resampling and low pass filter for the YM2612 Michael Pavone <pavone@retrodev.com> parents: 936 diff changeset	612 left += (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER;
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	613 }
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	614 if (context->channels[i].lr & 0x40) {
965 5257e85364ed Implemented linear resampling and low pass filter for the YM2612 Michael Pavone <pavone@retrodev.com> parents: 936 diff changeset	615 right += (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER;
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	616 }
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	617 }
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	618 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	619 }
965 5257e85364ed Implemented linear resampling and low pass filter for the YM2612 Michael Pavone <pavone@retrodev.com> parents: 936 diff changeset	620
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	621 }
535 aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	622 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	623 context->status &= 0x7F;
374 d42a8a3e4894 Fix YM2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 371 diff changeset	624 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	625 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	626 //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	627 }
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	628
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	629 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	630 {
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	631 //printf("address_write_part1: %X\n", address);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	632 context->selected_reg = address;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	633 context->selected_part = 0;
535 aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	634 context->write_cycle = context->current_cycle;
aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	635 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	636 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	637 }
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	638
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	639 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	640 {
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	641 //printf("address_write_part2: %X\n", address);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	642 context->selected_reg = address;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	643 context->selected_part = 1;
535 aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	644 context->write_cycle = context->current_cycle;
aaa77e351c24 Better emulation of the YM-2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 532 diff changeset	645 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	646 context->status \|= 0x80;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	647 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	648
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	649 static uint8_t fnum_to_keycode[] = {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	650 //F11 = 0
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	651 0,0,0,0,0,0,0,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	652 //F11 = 1
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	653 2,3,3,3,3,3,3,3
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	654 };
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	655
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	656 //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	657 static uint32_t detune_table[][4] = {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	658 {0, 0, 1, 2}, //0 (0x00)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	659 {0, 0, 1, 2}, //1 (0x01)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	660 {0, 0, 1, 2}, //2 (0x02)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	661 {0, 0, 1, 2}, //3 (0x03)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	662 {0, 1, 2, 2}, //4 (0x04)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	663 {0, 1, 2, 3}, //5 (0x05)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	664 {0, 1, 2, 3}, //6 (0x06)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	665 {0, 1, 2, 3}, //7 (0x07)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	666 {0, 1, 2, 4}, //8 (0x08)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	667 {0, 1, 3, 4}, //9 (0x09)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	668 {0, 1, 3, 4}, //10 (0x0A)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	669 {0, 1, 3, 5}, //11 (0x0B)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	670 {0, 2, 4, 5}, //12 (0x0C)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	671 {0, 2, 4, 6}, //13 (0x0D)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	672 {0, 2, 4, 6}, //14 (0x0E)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	673 {0, 2, 5, 7}, //15 (0x0F)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	674 {0, 2, 5, 8}, //16 (0x10)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	675 {0, 3, 6, 8}, //17 (0x11)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	676 {0, 3, 6, 9}, //18 (0x12)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	677 {0, 3, 7,10}, //19 (0x13)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	678 {0, 4, 8,11}, //20 (0x14)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	679 {0, 4, 8,12}, //21 (0x15)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	680 {0, 4, 9,13}, //22 (0x16)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	681 {0, 5,10,14}, //23 (0x17)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	682 {0, 5,11,16}, //24 (0x18)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	683 {0, 6,12,17}, //25 (0x19)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	684 {0, 6,13,19}, //26 (0x1A)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	685 {0, 7,14,20}, //27 (0x1B)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	686 {0, 8,16,22}, //28 (0x1C)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	687 {0, 8,16,22}, //29 (0x1D)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	688 {0, 8,16,22}, //30 (0x1E)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	689 {0, 8,16,22}
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	690 }; //31 (0x1F)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	691
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	692 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	693 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	694 uint32_t chan_num = op / 4;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	695 //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	696 //base frequency
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	697 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	698 uint32_t inc, detune;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	699 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	700 //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	701 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	702 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	703 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	704 }
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	705 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	706 if (channel->pms) {
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	707 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	708 }
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	709 if (!context->ch3_supp[index].block) {
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	710 inc >>= 1;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	711 } else {
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	712 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	713 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	714 //detune
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	715 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	716 } else {
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	717 inc = channel->fnum;
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	718 if (channel->pms) {
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	719 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	720 }
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	721 if (!channel->block) {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	722 inc >>= 1;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	723 } else {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	724 inc <<= (channel->block-1);
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	725 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	726 //detune
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	727 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	728 }
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	729 if (channel->pms) {
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	730 inc >>= 1;
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	731 }
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	732 if (operator->detune & 0x4) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	733 inc -= detune;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	734 //this can underflow, mask to 17-bit result
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	735 inc &= 0x1FFFF;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	736 } else {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	737 inc += detune;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	738 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	739 //multiple
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	740 if (operator->multiple) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	741 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	742 inc &= 0xFFFFF;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	743 } else {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	744 //0.5
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	745 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	746 }
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	747 //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	748 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	749 }
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	750
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	751 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	752 {
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	753 if (context->selected_reg >= YM_REG_END) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	754 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	755 }
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	756 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	757 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	758 return;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	759 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	760 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	761 } else {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	762 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	763 return;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	764 }
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	765 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	766 }
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	767 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	768 if (context->selected_reg < 0x30) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	769 //Shared regs
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	770 switch (context->selected_reg)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	771 {
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	772 //TODO: Test reg
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	773 case REG_LFO:
532 666210adf87b Comment out LFO debug printf Mike Pavone <pavone@retrodev.com> parents: 527 diff changeset	774 /*if ((value & 0x8) && !context->lfo_enable) {
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	775 printf("LFO Enabled, Freq: %d\n", value & 0x7);
532 666210adf87b Comment out LFO debug printf Mike Pavone <pavone@retrodev.com> parents: 527 diff changeset	776 }*/
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	777 context->lfo_enable = value & 0x8;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	778 if (!context->lfo_enable) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	779 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	780 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	781 context->lfo_freq = value & 0x7;
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	782
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	783 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	784 case REG_TIMERA_HIGH:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	785 context->timer_a_load &= 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	786 context->timer_a_load \|= value << 2;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	787 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	788 case REG_TIMERA_LOW:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	789 context->timer_a_load &= 0xFFFC;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	790 context->timer_a_load \|= value & 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	791 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	792 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	793 context->timer_b_load = value;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	794 break;
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	795 case REG_TIME_CTRL: {
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	796 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	797 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	798 context->timer_control \|= BIT_TIMERA_LOAD;
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	799 }
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	800 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	801 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	802 context->timer_control \|= BIT_TIMERB_LOAD;
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	803 }
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	804 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	805 context->timer_control \|= value & 0xF;
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	806 if (value & BIT_TIMERA_RESET) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	807 context->status &= ~BIT_STATUS_TIMERA;
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	808 }
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	809 if (value & BIT_TIMERB_RESET) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	810 context->status &= ~BIT_STATUS_TIMERB;
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	811 }
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	812 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	813 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	814 }
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	815 context->ch3_mode = value & 0xC0;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	816 break;
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	817 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	818 case REG_KEY_ONOFF: {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	819 uint8_t channel = value & 0x7;
386 6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	820 if (channel != 3 && channel != 7) {
6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	821 if (channel > 2) {
6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	822 channel--;
6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	823 }
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	824 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	825 ? (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	826 : 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	827 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	828 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	829 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	830 if (value & keyon_bits[bit]) {
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	831 first_key_on = 1;
e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	832 //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	833 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	834 } 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	835 //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	836 keyoff(context->operators + op);
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	837 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	838 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	839 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	840 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	841 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	842 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	843 case REG_DAC:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	844 if (context->dac_enable) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	845 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	846 //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	847 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	848 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	849 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	850 //printf("DAC Enable: %X\n", value);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	851 context->dac_enable = value & 0x80;
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 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	854 } else if (context->selected_reg < 0xA0) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	855 //part
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	856 uint8_t op = context->selected_part ? (NUM_OPERATORS/2) : 0;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	857 //channel in part
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	858 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	859 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	860 //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	861 ym_operator * operator = context->operators + op;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	862 switch (context->selected_reg & 0xF0)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	863 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	864 case REG_DETUNE_MULT:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	865 operator->detune = value >> 4 & 0x7;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	866 operator->multiple = value & 0xF;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	867 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	868 case REG_TOTAL_LEVEL:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	869 operator->total_level = (value & 0x7F) << 5;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	870 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	871 case REG_ATTACK_KS:
376 f6def5cdf1b4 Fix key scaling Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	872 operator->key_scaling = 3 - (value >> 6);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	873 operator->rates[PHASE_ATTACK] = value & 0x1F;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	874 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	875 case REG_DECAY_AM:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	876 //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	877 operator->am = value & 0x80;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	878 operator->rates[PHASE_DECAY] = value & 0x1F;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	879 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	880 case REG_SUSTAIN_RATE:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	881 operator->rates[PHASE_SUSTAIN] = value & 0x1F;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	882 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	883 case REG_S_LVL_R_RATE:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	884 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	885 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	886 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	887 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	888 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	889 break;
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	890 case REG_SSG_EG:
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	891 if (!(value & SSG_ENABLE)) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	892 value = 0;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	893 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	894 if ((value ^ operator->ssg) & SSG_INVERT) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	895 operator->inverted ^= SSG_INVERT;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	896 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	897 operator->ssg = value;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	898 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	899 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	900 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	901 } else {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	902 uint8_t channel = context->selected_reg & 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	903 if (channel != 3) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	904 if (context->selected_part) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	905 channel += 3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	906 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	907 //printf("write targets channel %d\n", channel);
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	908 switch (context->selected_reg & 0xFC)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	909 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	910 case REG_FNUM_LOW:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	911 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	912 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	913 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	914 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	915 case REG_BLOCK_FNUM_H:{
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	916 context->channels[channel].block_fnum_latch = value;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	917 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	918 }
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	919 case REG_FNUM_LOW_CH3:
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	920 if (channel < 3) {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	921 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	922 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	923 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	924 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	925 break;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	926 case REG_BLOCK_FN_CH3:
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	927 if (channel < 3) {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	928 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	929 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	930 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	931 case REG_ALG_FEEDBACK:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	932 context->channels[channel].algorithm = value & 0x7;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	933 context->channels[channel].feedback = value >> 3 & 0x7;
527 7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	934 //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	935 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	936 case REG_LR_AMS_PMS:
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	937 context->channels[channel].pms = (value & 0x7) * 32;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	938 context->channels[channel].ams = value >> 4 & 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	939 context->channels[channel].lr = value & 0xC0;
369 fc820ab1394b Fix left/right enable default value Mike Pavone <pavone@retrodev.com> parents: 365 diff changeset	940 //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	941 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	942 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	943 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	944 }
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	945
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	946 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	947 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	948 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	949 }
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	950
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	951 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	952 {
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	953 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	954 }
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	955
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	956 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	957 {
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	958 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	959 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	960 "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	961 "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	962 "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	963 "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	964 "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	965 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	966 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	967 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	968 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	969 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	970 "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	971 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	972 }
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	973 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	974 {
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	975 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	976 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	977 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	978 } 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	979 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	980 }
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	981 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	982 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	983 " 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	984 " 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	985 " 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	986 " 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	987 " 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	988 " 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	989 " 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	990 " 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	991 " 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	992 " 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	993 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	994 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	995 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	996 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	997 }
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	998 }
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	999
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	1000 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	1001 {
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1002 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	1003 "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	1004 "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	1005 "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	1006 "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	1007 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	1008 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	1009 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	1010 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	1011 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	1012 "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	1013 "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	1014 "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	1015 "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	1016 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	1017 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	1018 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	1019 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	1020 }
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1021
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1022 void ym_serialize(ym2612_context context, serialize_buffer buf)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1023 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1024 save_buffer8(buf, context->part1_regs, YM_PART1_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1025 save_buffer8(buf, context->part2_regs, YM_PART2_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1026 for (int i = 0; i < NUM_OPERATORS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1027 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1028 save_int32(buf, context->operators[i].phase_counter);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1029 save_int16(buf, context->operators[i].envelope);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1030 save_int16(buf, context->operators[i].output);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1031 save_int8(buf, context->operators[i].env_phase);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1032 save_int8(buf, context->operators[i].inverted);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1033 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1034 for (int i = 0; i < NUM_CHANNELS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1035 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1036 save_int16(buf, context->channels[i].output);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1037 save_int16(buf, context->channels[i].op1_old);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1038 //Due to the latching behavior, these need to be saved
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1039 //even though duplicate info is probably in the regs array
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1040 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	1041 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	1042 save_int8(buf, context->channels[i].keyon);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1043 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1044 for (int i = 0; i < 3; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1045 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1046 //Due to the latching behavior, these need to be saved
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1047 //even though duplicate info is probably in the regs array
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1048 save_int8(buf, context->ch3_supp[i].block);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1049 save_int8(buf, context->ch3_supp[i].fnum);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1050 }
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	1051 save_int8(buf, context->timer_control);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1052 save_int16(buf, context->timer_a);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1053 save_int8(buf, context->timer_b);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1054 save_int8(buf, context->sub_timer_b);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1055 save_int16(buf, context->env_counter);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1056 save_int8(buf, context->current_op);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1057 save_int8(buf, context->current_env_op);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1058 save_int8(buf, context->lfo_counter);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1059 save_int8(buf, context->csm_keyon);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1060 save_int8(buf, context->status);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1061 save_int8(buf, context->selected_reg);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1062 save_int8(buf, context->selected_part);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1063 save_int32(buf, context->current_cycle);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1064 save_int32(buf, context->write_cycle);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1065 save_int32(buf, context->busy_cycles);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1066 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1067
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1068 void ym_deserialize(deserialize_buffer buf, void vcontext)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1069 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1070 ym2612_context *context = vcontext;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1071 uint8_t temp_regs[YM_PART1_REGS];
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1072 load_buffer8(buf, temp_regs, YM_PART1_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1073 context->selected_part = 0;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1074 for (int i = 0; i < YM_PART1_REGS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1075 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1076 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	1077 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	1078 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	1079 } 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	1080 context->selected_reg = reg;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1081 ym_data_write(context, temp_regs[i]);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1082 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1083 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1084 load_buffer8(buf, temp_regs, YM_PART2_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1085 context->selected_part = 1;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1086 for (int i = 0; i < YM_PART2_REGS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1087 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1088 uint8_t reg = YM_PART2_START + i;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1089 if (reg != REG_FNUM_LOW) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1090 context->selected_reg = reg;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1091 ym_data_write(context, temp_regs[i]);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1092 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1093 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1094 for (int i = 0; i < NUM_OPERATORS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1095 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1096 context->operators[i].phase_counter = load_int32(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1097 context->operators[i].envelope = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1098 context->operators[i].output = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1099 context->operators[i].env_phase = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1100 if (context->operators[i].env_phase > PHASE_RELEASE) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1101 context->operators[i].env_phase = PHASE_RELEASE;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1102 }
1450 08bc099a622f Save entirety of fnum register, not just the low 8 bits Michael Pavone <pavone@retrodev.com> parents: 1447 diff changeset	1103 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	1104 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1105 for (int i = 0; i < NUM_CHANNELS; 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 context->channels[i].output = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1108 context->channels[i].op1_old = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1109 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	1110 context->channels[i].fnum = load_int16(buf);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1111 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	1112 context->channels[i].keyon = load_int8(buf);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1113 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1114 for (int i = 0; i < 3; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1115 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1116 context->ch3_supp[i].block = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1117 context->ch3_supp[i].fnum = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1118 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	1119 }
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	1120 context->timer_control = load_int8(buf);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1121 context->timer_a = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1122 context->timer_b = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1123 context->sub_timer_b = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1124 context->env_counter = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1125 context->current_op = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1126 if (context->current_op >= NUM_OPERATORS) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1127 context->current_op = 0;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1128 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1129 context->current_env_op = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1130 if (context->current_env_op >= NUM_OPERATORS) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1131 context->current_env_op = 0;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1132 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1133 context->lfo_counter = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1134 context->csm_keyon = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1135 context->status = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1136 context->selected_reg = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1137 context->selected_part = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1138 context->current_cycle = load_int32(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1139 context->write_cycle = load_int32(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1140 context->busy_cycles = load_int32(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1141 }

Mercurial > repos > blastem

annotate ym2612.c @ 1569:0ec89dadb36d