repos/blastem: ym2612.c annotate

annotate ym2612.c @ 2289:92449b47cce8

Integrate VGM player into main blastem binary

author	Michael Pavone <pavone@retrodev.com>
date	Sat, 04 Feb 2023 22:44:44 -0800
parents	8a918eb95ba8
children	0343f0d5add0

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"
1946 c3c62dbf1ceb WIP netplay support Michael Pavone <pavone@retrodev.com> parents: 1912 diff changeset	14 #include "event_log.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	15
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	16 //#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	17 #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	18 #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	19 #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	20 #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	21 #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	22 #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	23 #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	24
1902 32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	25 #define BUSY_CYCLES 32
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	26 #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	27
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 #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	29 #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	30 #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	31 #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	32 #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	33 #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	34
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	35 #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	36 #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	37
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	38 #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	39 #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	40
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	41 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	42
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	43 enum {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	44 PHASE_ATTACK,
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	45 PHASE_DECAY,
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	46 PHASE_SUSTAIN,
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	47 PHASE_RELEASE
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	48 };
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 uint8_t did_tbl_init = 0;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	51 //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	52 //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	53 //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	54 #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	55 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	56 //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	57 //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	58 //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	59 #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	60 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	61
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	62 static uint16_t rate_table_base[] = {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	63 //main portion
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	64 0,1,0,1,0,1,0,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	65 0,1,0,1,1,1,0,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	66 0,1,1,1,0,1,1,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	67 0,1,1,1,1,1,1,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	68 //top end
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	69 1,1,1,1,1,1,1,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	70 1,1,1,2,1,1,1,2,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	71 1,2,1,2,1,2,1,2,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	72 1,2,2,2,1,2,2,2,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	73 };
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	74
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	75 static uint16_t rate_table[64*8];
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	76
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	77 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	78 static uint8_t lfo_pm_base[][8] = {
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	79 {0, 0, 0, 0, 0, 0, 0, 0},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	80 {0, 0, 0, 0, 4, 4, 4, 4},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	81 {0, 0, 0, 4, 4, 4, 8, 8},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	82 {0, 0, 4, 4, 8, 8, 0xc, 0xc},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	83 {0, 0, 4, 8, 8, 8, 0xc,0x10},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	84 {0, 0, 8, 0xc,0x10,0x10,0x14,0x18},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	85 {0, 0,0x10,0x18,0x20,0x20,0x28,0x30},
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	86 {0, 0,0x20,0x30,0x40,0x40,0x50,0x60}
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	87 };
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	88 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	89
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	90 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	91
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	92 #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	93 #define YM_DIVIDER 2
374 d42a8a3e4894 Fix YM2612 busy flag Mike Pavone <pavone@retrodev.com> parents: 371 diff changeset	94 #define CYCLE_NEVER 0xFFFFFFFF
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	95
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	96 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	97 {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	98 return value * (1 << dec_bits) + 0.5;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	99 }
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	100
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	101 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	102 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	103
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	104 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	105
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	106 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	107 {
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	108 if (!log_context) {
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	109 return;
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	110 }
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	111 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	112 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	113 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	114 }
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	115 }
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	116 log_context = NULL;
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	117 }
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	118
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 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	120 {
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	121 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	122 }
407 c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	123
1902 32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	124 void ym_adjust_cycles(ym2612_context *context, uint32_t deduction)
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	125 {
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	126 context->current_cycle -= deduction;
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	127 if (context->write_cycle != CYCLE_NEVER && context->write_cycle >= deduction) {
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	128 context->write_cycle -= deduction;
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	129 } else {
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	130 context->write_cycle = CYCLE_NEVER;
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	131 }
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	132 if (context->busy_start != CYCLE_NEVER && context->busy_start >= deduction) {
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	133 context->busy_start -= deduction;
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	134 } else {
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	135 context->busy_start = CYCLE_NEVER;
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	136 }
1904 8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	137 if (context->last_status_cycle != CYCLE_NEVER && context->last_status_cycle >= deduction) {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	138 context->last_status_cycle -= deduction;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	139 } else {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	140 context->last_status = 0;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	141 context->last_status_cycle = CYCLE_NEVER;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	142 }
1902 32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	143 }
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	144
859 46bb673eed4e Load config file and rom.db from appropriate locations on Android Michael Pavone <pavone@retrodev.com> parents: 853 diff changeset	145 #ifdef __ANDROID__
46bb673eed4e Load config file and rom.db from appropriate locations on Android Michael Pavone <pavone@retrodev.com> parents: 853 diff changeset	146 #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	147 #endif
46bb673eed4e Load config file and rom.db from appropriate locations on Android Michael Pavone <pavone@retrodev.com> parents: 853 diff changeset	148
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	149
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 #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	151 #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	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 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	154 {
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 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	156 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	157 memset(context->operators, 0, sizeof(context->operators));
1654 4637ab86be8c Preserve WAVE logging FILE * across YM2612 device reset Michael Pavone <pavone@retrodev.com> parents: 1555 diff changeset	158 FILE* savedlogs[NUM_CHANNELS];
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	159 uint8_t saved_scope_channel[NUM_CHANNELS];
1654 4637ab86be8c Preserve WAVE logging FILE * across YM2612 device reset Michael Pavone <pavone@retrodev.com> parents: 1555 diff changeset	160 for (int i = 0; i < NUM_CHANNELS; i++)
4637ab86be8c Preserve WAVE logging FILE * across YM2612 device reset Michael Pavone <pavone@retrodev.com> parents: 1555 diff changeset	161 {
4637ab86be8c Preserve WAVE logging FILE * across YM2612 device reset Michael Pavone <pavone@retrodev.com> parents: 1555 diff changeset	162 savedlogs[i] = context->channels[i].logfile;
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	163 saved_scope_channel[i] = context->channels[i].scope_channel;
1654 4637ab86be8c Preserve WAVE logging FILE * across YM2612 device reset Michael Pavone <pavone@retrodev.com> parents: 1555 diff changeset	164 }
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	165 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	166 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	167 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	168 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	169 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	170 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	171 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	172 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	173 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	174 //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	175 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	176 context->timer_b = TIMER_B_MAX;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	177
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	178 //TODO: Reset LFO state
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	179
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	180 //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	181 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	182 context->channels[i].lr = 0xC0;
1654 4637ab86be8c Preserve WAVE logging FILE * across YM2612 device reset Michael Pavone <pavone@retrodev.com> parents: 1555 diff changeset	183 context->channels[i].logfile = savedlogs[i];
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	184 context->channels[i].scope_channel = saved_scope_channel[i];
2005 3ce38692a3f2 Set initial pan bits in YM2612 register array and not just the separate lr field of the channel. This fixes an issue in which some channels would be silent in VGM log output Michael Pavone <pavone@retrodev.com> parents: 1946 diff changeset	185 if (i < 3) {
3ce38692a3f2 Set initial pan bits in YM2612 register array and not just the separate lr field of the channel. This fixes an issue in which some channels would be silent in VGM log output Michael Pavone <pavone@retrodev.com> parents: 1946 diff changeset	186 context->part1_regs[REG_LR_AMS_PMS - YM_PART1_START + i] = 0xC0;
3ce38692a3f2 Set initial pan bits in YM2612 register array and not just the separate lr field of the channel. This fixes an issue in which some channels would be silent in VGM log output Michael Pavone <pavone@retrodev.com> parents: 1946 diff changeset	187 } else {
3ce38692a3f2 Set initial pan bits in YM2612 register array and not just the separate lr field of the channel. This fixes an issue in which some channels would be silent in VGM log output Michael Pavone <pavone@retrodev.com> parents: 1946 diff changeset	188 context->part2_regs[REG_LR_AMS_PMS - YM_PART2_START + i - 3] = 0xC0;
3ce38692a3f2 Set initial pan bits in YM2612 register array and not just the separate lr field of the channel. This fixes an issue in which some channels would be silent in VGM log output Michael Pavone <pavone@retrodev.com> parents: 1946 diff changeset	189 }
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	190 }
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	191 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	192 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	193 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	194 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	195 }
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	196 }
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	197
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	198 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	199 {
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	200 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	201 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	202 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	203 context->clock_inc = clock_div * 6;
1902 32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	204 context->busy_cycles = BUSY_CYCLES * context->clock_inc;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	205 context->audio = render_audio_source("YM2612", master_clock, context->clock_inc * NUM_OPERATORS, 2);
1904 8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	206 //TODO: pick a randomish high initial value and lower it over time
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	207 context->invalid_status_decay = 225000 * context->clock_inc;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	208 context->status_address_mask = (options & YM_OPT_3834) ? 0 : 3;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	209
369 fc820ab1394b Fix left/right enable default value Mike Pavone <pavone@retrodev.com> parents: 365 diff changeset	210 //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	211 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	212 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	213 char fname[64];
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	214 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	215 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	216 if (!f) {
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	217 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	218 continue;
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	219 }
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	220 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	221 fclose(f);
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	222 context->channels[i].logfile = NULL;
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	223 }
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	224 }
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	225 }
c3abc4ada43d Add support for logging YM2612 channels to WAVE files Mike Pavone <pavone@retrodev.com> parents: 406 diff changeset	226 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	227 log_context = context;
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	228 if (!registered_finalize) {
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	229 atexit(ym_finalize_log);
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	230 registered_finalize = 1;
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	231 }
369 fc820ab1394b Fix left/right enable default value Mike Pavone <pavone@retrodev.com> parents: 365 diff changeset	232 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	233 if (!did_tbl_init) {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	234 //populate sine table
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	235 for (int32_t i = 0; i < 512; i++) {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	236 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	237
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	238 //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	239 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	240 }
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	241 //populate power table
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	242 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	243 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	244 int32_t tmp = round_fixed_point(linear, 11);
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	245 int32_t shift = (i >> 8) - 2;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	246 if (shift < 0) {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	247 tmp <<= 0-shift;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	248 } else {
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	249 tmp >>= shift;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	250 }
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	251 pow_table[i] = tmp;
cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	252 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	253 //populate envelope generator rate table, from small base table
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	254 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	255 for (int cycle = 0; cycle < 8; cycle++) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	256 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	257 if (rate < 2) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	258 value = 0;
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	259 } else if (rate >= 60) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	260 value = 8;
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	261 } 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	262 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	263 } else if (rate < 48) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	264 value = rate_table_base[(rate & 0x3) * 8 + cycle];
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	265 } 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	266 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	267 }
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	268 rate_table[rate * 8 + cycle] = value;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	269 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	270 }
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	271 //populate LFO PM table from small base table
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	272 //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	273 for (int freq = 0; freq < 128; freq++) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	274 for (int pms = 0; pms < 8; pms++) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	275 for (int step = 0; step < 32; step++) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	276 int16_t value = 0;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	277 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	278 if (freq & bit) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	279 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	280 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	281 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	282 if (step & 0x10) {
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	283 value = -value;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	284 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	285 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	286 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	287 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	288 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	289 }
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	290 ym_reset(context);
1798 5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	291 ym_enable_zero_offset(context, 1);
288 a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run. Mike Pavone <pavone@retrodev.com> parents: diff changeset	292 }
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	293
884 252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	294 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	295 {
1551 ce1f93be0104 Small cleanup to audio interface between emulation code and renderer backend Michael Pavone <pavone@retrodev.com> parents: 1450 diff changeset	296 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	297 if (context == log_context) {
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	298 ym_finalize_log();
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	299 }
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	300 free(context);
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	301 }
252dfd29831d Selecting a second game from the menu now works Michael Pavone <pavone@retrodev.com> parents: 859 diff changeset	302
1798 5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	303 void ym_enable_zero_offset(ym2612_context *context, uint8_t enabled)
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	304 {
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	305 if (enabled) {
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	306 context->zero_offset = 0x70;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	307 context->volume_mult = 79;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	308 context->volume_div = 120;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	309 } else {
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	310 context->zero_offset = 0;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	311 context->volume_mult = 2;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	312 context->volume_div = 3;
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	313 }
5278b6e44fc1 Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612 Michael Pavone <pavone@retrodev.com> parents: 1656 diff changeset	314 }
381 7815ebbbd705 Fix modulation shift value Mike Pavone <pavone@retrodev.com> parents: 380 diff changeset	315 #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	316
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	317 #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	318
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	319 #define SSG_ENABLE 8
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	320 #define SSG_INVERT 4
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	321 #define SSG_ALTERNATE 2
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	322 #define SSG_HOLD 1
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	323
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	324 #define SSG_CENTER 0x800
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	325
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	326 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	327 {
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	328 //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	329 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	330 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	331 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	332 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	333 }
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 (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	335 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	336 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	337 } 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	338 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	339 }
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	340 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	341
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	342 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	343 {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	344 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	345 op->phase_counter = 0;
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	346 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	347 }
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 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	350
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	351 static void keyoff(ym_operator *op)
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	352 {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	353 op->env_phase = PHASE_RELEASE;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	354 if (op->inverted) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	355 //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	356 op->inverted = 0;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	357 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	358 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	359 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	360
1300 4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	361 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	362 {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	363 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	364 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	365 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	366 {
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	367 if (changes & keyon_bits[bit]) {
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	368 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	369 }
4b893b02444e Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though Michael Pavone <pavone@retrodev.com> parents: 1102 diff changeset	370 }
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	371 }
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	372
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	373 void ym_run_timers(ym2612_context *context)
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	374 {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	375 if (context->timer_control & BIT_TIMERA_ENABLE) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	376 if (context->timer_a != TIMER_A_MAX) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	377 context->timer_a++;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	378 if (context->csm_keyon) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	379 csm_keyoff(context);
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	380 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	381 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	382 if (context->timer_control & BIT_TIMERA_LOAD) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	383 context->timer_control &= ~BIT_TIMERA_LOAD;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	384 } else if (context->timer_control & BIT_TIMERA_OVEREN) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	385 context->status \|= BIT_STATUS_TIMERA;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	386 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	387 context->timer_a = context->timer_a_load;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	388 if (!context->csm_keyon && context->ch3_mode == CSM_MODE) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	389 context->csm_keyon = 0xF0;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	390 uint8_t changes = 0xF0 ^ context->channels[2].keyon;;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	391 for (uint8_t op = 24, bit = 0; op < 34; op++, bit++)
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	392 {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	393 if (changes & keyon_bits[bit]) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	394 keyon(context->operators + op, context->channels + 2);
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	395 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	396 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	397 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	398 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	399 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	400 if (!context->sub_timer_b) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	401 if (context->timer_control & BIT_TIMERB_ENABLE) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	402 if (context->timer_b != TIMER_B_MAX) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	403 context->timer_b++;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	404 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	405 if (context->timer_control & BIT_TIMERB_LOAD) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	406 context->timer_control &= ~BIT_TIMERB_LOAD;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	407 } else if (context->timer_control & BIT_TIMERB_OVEREN) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	408 context->status \|= BIT_STATUS_TIMERB;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	409 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	410 context->timer_b = context->timer_b_load;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	411 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	412 }
2029 1e7a63f0ccf4 Fix Timer B load bug that made games using Konami sound driver to have slower music tempo than they should Michael Pavone <pavone@retrodev.com> parents: 2005 diff changeset	413 } else if (context->timer_control & BIT_TIMERB_LOAD) {
1e7a63f0ccf4 Fix Timer B load bug that made games using Konami sound driver to have slower music tempo than they should Michael Pavone <pavone@retrodev.com> parents: 2005 diff changeset	414 context->timer_control &= ~BIT_TIMERB_LOAD;
1e7a63f0ccf4 Fix Timer B load bug that made games using Konami sound driver to have slower music tempo than they should Michael Pavone <pavone@retrodev.com> parents: 2005 diff changeset	415 context->timer_b = context->timer_b_load;
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	416 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	417 context->sub_timer_b += 0x10;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	418 //Update LFO
2284 5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	419 uint8_t old_pm_step = context->lfo_pm_step;
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	420 if (context->lfo_enable) {
2284 5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	421 if (context->lfo_counter >= lfo_timer_values[context->lfo_freq]) {
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	422 context->lfo_counter = 0;
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	423 context->lfo_am_step += 2;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	424 context->lfo_am_step &= 0xFE;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	425 context->lfo_pm_step = context->lfo_am_step / 8;
2284 5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	426 } else {
2287 8a918eb95ba8 Fix LFO regression Michael Pavone <pavone@retrodev.com> parents: 2284 diff changeset	427 context->lfo_counter++;
2284 5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	428 }
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	429 } else {
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	430 context->lfo_am_step = context->lfo_pm_step = 0;
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	431 }
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	432 if (context->lfo_pm_step != old_pm_step) {
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	433 for (int chan = 0; chan < NUM_CHANNELS; chan++)
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	434 {
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	435 if (context->channels[chan].pms) {
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	436 for (int op = chan * 4; op < (chan + 1) * 4; op++)
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	437 {
2284 5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	438 context->operators[op].phase_inc = ym_calc_phase_inc(context, context->operators + op, op);
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	439 }
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	440 }
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	441 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	442 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	443 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	444
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	445 void ym_run_envelope(ym2612_context context, ym_channel channel, ym_operator *operator)
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	446 {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	447 uint32_t env_cyc = context->env_counter;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	448 uint8_t rate;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	449 if (operator->env_phase == PHASE_DECAY && operator->envelope >= operator->sustain_level) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	450 //operator->envelope = operator->sustain_level;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	451 operator->env_phase = PHASE_SUSTAIN;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	452 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	453 rate = operator->rates[operator->env_phase];
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	454 if (rate) {
2284 5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	455 uint8_t keycode = channel->keycode;
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	456 if (context->ch3_mode) {
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	457 int opnum = operator - context->operators;
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	458 if (opnum >= 2 * 4 && opnum < 2 * 4 + 3) {
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	459 opnum &= 3;
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	460 if (opnum < 2) {
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	461 opnum ^= 1;
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	462 }
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	463 keycode = context->ch3_supp[opnum].keycode;
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	464 }
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	465 }
5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	466 uint8_t ks = keycode >> operator->key_scaling;
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	467 rate = rate*2 + ks;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	468 if (rate > 63) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	469 rate = 63;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	470 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	471 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	472 uint32_t cycle_shift = rate < 0x30 ? ((0x2F - rate) >> 2) : 0;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	473 if (!(env_cyc & ((1 << cycle_shift) - 1))) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	474 uint32_t update_cycle = env_cyc >> cycle_shift & 0x7;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	475 uint16_t envelope_inc = rate_table[rate * 8 + update_cycle];
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	476 if (operator->env_phase == PHASE_ATTACK) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	477 //this can probably be optimized to a single shift rather than a multiply + shift
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	478 uint16_t old_env = operator->envelope;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	479 operator->envelope += ((~operator->envelope * envelope_inc) >> 4) & 0xFFFFFFFC;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	480 if (operator->envelope > old_env) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	481 //Handle overflow
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	482 operator->envelope = 0;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	483 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	484 if (!operator->envelope) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	485 operator->env_phase = PHASE_DECAY;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	486 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	487 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	488 if (operator->ssg) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	489 if (operator->envelope < SSG_CENTER) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	490 envelope_inc *= 4;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	491 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	492 envelope_inc = 0;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	493 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	494 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	495 //envelope value is 10-bits, but it will be used as a 4.8 value
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	496 operator->envelope += envelope_inc << 2;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	497 //clamp to max attenuation value
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	498 if (
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	499 operator->envelope > MAX_ENVELOPE
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	500 \|\| (operator->env_phase == PHASE_RELEASE && operator->envelope >= SSG_CENTER)
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	501 ) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	502 operator->envelope = MAX_ENVELOPE;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	503 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	504 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	505 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	506 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	507
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	508 void ym_run_phase(ym2612_context *context, uint32_t channel, uint32_t op)
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	509 {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	510 if (channel != 5 \|\| !context->dac_enable) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	511 //printf("updating operator %d of channel %d\n", op, channel);
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	512 ym_operator * operator = context->operators + op;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	513 ym_channel * chan = context->channels + channel;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	514 uint16_t phase = operator->phase_counter >> 10 & 0x3FF;
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	515 uint32_t old_phase = operator->phase_counter;
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	516 operator->phase_counter += operator->phase_inc;//ym_calc_phase_inc(context, operator, op);
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	517 operator->phase_overflow = (old_phase & 0xFFFFF) > (operator->phase_counter & 0xFFFFF);
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	518 int16_t mod = 0;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	519 if (op & 3) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	520 if (operator->mod_src[0]) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	521 mod = *operator->mod_src[0];
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	522 if (operator->mod_src[1]) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	523 mod += *operator->mod_src[1];
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	524 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	525 mod >>= YM_MOD_SHIFT;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	526 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	527 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	528 if (chan->feedback) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	529 mod = (chan->op1_old + operator->output) >> (10-chan->feedback);
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	530 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	531 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	532 uint16_t env = operator->envelope;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	533 if (operator->ssg) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	534 if (env >= SSG_CENTER) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	535 if (operator->ssg & SSG_ALTERNATE) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	536 if (operator->env_phase != PHASE_RELEASE && (
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	537 !(operator->ssg & SSG_HOLD) \|\| ((operator->ssg ^ operator->inverted) & SSG_INVERT) == 0
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	538 )) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	539 operator->inverted ^= SSG_INVERT;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	540 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	541 } else if (!(operator->ssg & SSG_HOLD)) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	542 phase = operator->phase_counter = 0;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	543 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	544 if (
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	545 (operator->env_phase == PHASE_DECAY \|\| operator->env_phase == PHASE_SUSTAIN)
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	546 && !(operator->ssg & SSG_HOLD)
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	547 ) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	548 start_envelope(operator, chan);
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	549 env = operator->envelope;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	550 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	551 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	552 if (operator->inverted) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	553 env = (SSG_CENTER - env) & MAX_ENVELOPE;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	554 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	555 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	556 env += operator->total_level;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	557 if (operator->am) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	558 uint16_t base_am = (context->lfo_am_step & 0x80 ? context->lfo_am_step : ~context->lfo_am_step) & 0x7E;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	559 if (ams_shift[chan->ams] >= 0) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	560 env += (base_am >> ams_shift[chan->ams]) & MAX_ENVELOPE;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	561 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	562 env += base_am << (-ams_shift[chan->ams]);
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	563 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	564 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	565 if (env > MAX_ENVELOPE) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	566 env = MAX_ENVELOPE;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	567 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	568 if (first_key_on) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	569 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]);
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	570 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	571 //if ((channel != 0 && channel != 4) \|\| chan->algorithm != 5) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	572 phase += mod;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	573 //}
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	574
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	575 int16_t output = pow_table[sine_table[phase & 0x1FF] + env];
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	576 if (phase & 0x200) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	577 output = -output;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	578 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	579 if (op % 4 == 0) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	580 chan->op1_old = operator->output;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	581 } else if (op % 4 == 2) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	582 chan->op2_old = operator->output;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	583 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	584 operator->output = output;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	585 //Update the channel output if we've updated all operators
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	586 if (op % 4 == 3) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	587 if (chan->algorithm < 4) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	588 chan->output = operator->output;
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	589 chan->phase_overflow = operator->phase_overflow;
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	590 } else if(chan->algorithm == 4) {
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	591 ym_operator other_op = context->operators + channel 4 + 2;
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	592 chan->output = operator->output + other_op->output;
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	593 if (operator->phase_inc < other_op->phase_inc) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	594 chan->phase_overflow = operator->phase_overflow;
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	595 } else {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	596 chan->phase_overflow = other_op->phase_overflow;
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	597 }
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	598 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	599 output = 0;
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	600 uint32_t lowest_phase_inc = 0xFFFFFFFF;
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	601 for (uint32_t op = ((chan->algorithm == 7) ? 0 : 1) + channel4; op < (channel+1)4; op++) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	602 output += context->operators[op].output;
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	603 if (context->operators[op].phase_inc < lowest_phase_inc) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	604 lowest_phase_inc = context->operators[op].phase_inc;
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	605 chan->phase_overflow = context->operators[op].phase_overflow;
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	606 }
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	607 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	608 chan->output = output;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	609 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	610 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	611 //puts("operator update done");
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	612 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	613 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	614
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	615 void ym_output_sample(ym2612_context *context)
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	616 {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	617 int16_t left = 0, right = 0;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	618 for (int i = 0; i < NUM_CHANNELS; i++) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	619 int16_t value = context->channels[i].output;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	620 if (value > 0x1FE0) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	621 value = 0x1FE0;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	622 } else if (value < -0x1FF0) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	623 value = -0x1FF0;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	624 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	625 value &= 0x3FE0;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	626 if (value & 0x2000) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	627 value \|= 0xC000;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	628 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	629 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	630 if (value >= 0) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	631 value += context->zero_offset;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	632 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	633 value -= context->zero_offset;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	634 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	635 if (context->channels[i].logfile) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	636 fwrite(&value, sizeof(value), 1, context->channels[i].logfile);
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	637 }
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	638 if (context->scope) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	639 scope_add_sample(context->scope, context->channels[i].scope_channel, value, context->channels[i].phase_overflow);
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	640 }
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	641 if (context->channels[i].lr & 0x80) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	642 left += (value * context->volume_mult) / context->volume_div;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	643 } else if (context->zero_offset) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	644 if (value >= 0) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	645 left += (context->zero_offset * context->volume_mult) / context->volume_div;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	646 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	647 left -= (context->zero_offset * context->volume_mult) / context->volume_div;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	648 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	649 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	650 if (context->channels[i].lr & 0x40) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	651 right += (value * context->volume_mult) / context->volume_div;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	652 } else if (context->zero_offset) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	653 if (value >= 0) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	654 right += (context->zero_offset * context->volume_mult) / context->volume_div;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	655 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	656 right -= (context->zero_offset * context->volume_mult) / context->volume_div;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	657 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	658 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	659 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	660 render_put_stereo_sample(context->audio, left, right);
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	661 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	662
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	663 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	664 {
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	665 if (context->current_cycle >= to_cycle) {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	666 return;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	667 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	668 //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	669 //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	670 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	671 //Update timers at beginning of 144 cycle period
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	672 if (!context->current_op) {
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	673 ym_run_timers(context);
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	674 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	675 //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	676 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	677 uint32_t op = context->current_env_op;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	678 ym_operator * operator = context->operators + op;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	679 ym_channel * channel = context->channels + op/4;
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	680 ym_run_envelope(context, channel, operator);
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	681 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	682 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	683 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	684 context->env_counter++;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	685 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	686 }
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	687
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	688 //Update Phase Generator
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	689 ym_run_phase(context, context->current_op / 4, context->current_op);
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	690 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	691 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	692 context->current_op = 0;
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	693 ym_output_sample(context);
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	694 }
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	695
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	696 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	697 //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	698 }
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	699
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	700 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	701 {
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	702 //printf("address_write_part1: %X\n", address);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	703 context->selected_reg = address;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	704 context->selected_part = 0;
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	705 }
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	706
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	707 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	708 {
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	709 //printf("address_write_part2: %X\n", address);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	710 context->selected_reg = address;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	711 context->selected_part = 1;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	712 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	713
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	714 static uint8_t fnum_to_keycode[] = {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	715 //F11 = 0
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	716 0,0,0,0,0,0,0,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	717 //F11 = 1
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	718 2,3,3,3,3,3,3,3
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	719 };
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	720
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	721 //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	722 static uint32_t detune_table[][4] = {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	723 {0, 0, 1, 2}, //0 (0x00)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	724 {0, 0, 1, 2}, //1 (0x01)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	725 {0, 0, 1, 2}, //2 (0x02)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	726 {0, 0, 1, 2}, //3 (0x03)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	727 {0, 1, 2, 2}, //4 (0x04)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	728 {0, 1, 2, 3}, //5 (0x05)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	729 {0, 1, 2, 3}, //6 (0x06)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	730 {0, 1, 2, 3}, //7 (0x07)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	731 {0, 1, 2, 4}, //8 (0x08)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	732 {0, 1, 3, 4}, //9 (0x09)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	733 {0, 1, 3, 4}, //10 (0x0A)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	734 {0, 1, 3, 5}, //11 (0x0B)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	735 {0, 2, 4, 5}, //12 (0x0C)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	736 {0, 2, 4, 6}, //13 (0x0D)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	737 {0, 2, 4, 6}, //14 (0x0E)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	738 {0, 2, 5, 7}, //15 (0x0F)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	739 {0, 2, 5, 8}, //16 (0x10)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	740 {0, 3, 6, 8}, //17 (0x11)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	741 {0, 3, 6, 9}, //18 (0x12)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	742 {0, 3, 7,10}, //19 (0x13)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	743 {0, 4, 8,11}, //20 (0x14)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	744 {0, 4, 8,12}, //21 (0x15)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	745 {0, 4, 9,13}, //22 (0x16)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	746 {0, 5,10,14}, //23 (0x17)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	747 {0, 5,11,16}, //24 (0x18)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	748 {0, 6,12,17}, //25 (0x19)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	749 {0, 6,13,19}, //26 (0x1A)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	750 {0, 7,14,20}, //27 (0x1B)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	751 {0, 8,16,22}, //28 (0x1C)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	752 {0, 8,16,22}, //29 (0x1D)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	753 {0, 8,16,22}, //30 (0x1E)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	754 {0, 8,16,22}
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	755 }; //31 (0x1F)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	756
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	757 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	758 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	759 uint32_t chan_num = op / 4;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	760 //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	761 //base frequency
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	762 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	763 uint32_t inc, detune;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	764 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	765 //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	766 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	767 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	768 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	769 }
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	770 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	771 if (channel->pms) {
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	772 inc = inc * 2 + lfo_pm_table[(inc & 0x7F0) * 16 + channel->pms + context->lfo_pm_step];
1802 1d1198f16279 Fix a couple of minor cases of extra precision in LFO implementation Michael Pavone <pavone@retrodev.com> parents: 1798 diff changeset	773 inc &= 0xFFF;
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	774 }
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	775 if (!context->ch3_supp[index].block) {
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	776 inc >>= 1;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	777 } else {
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	778 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	779 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	780 //detune
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	781 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	782 } else {
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	783 inc = channel->fnum;
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	784 if (channel->pms) {
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	785 inc = inc * 2 + lfo_pm_table[(inc & 0x7F0) * 16 + channel->pms + context->lfo_pm_step];
1808 ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	786 inc &= 0xFFF;
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	787 }
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	788 if (!channel->block) {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	789 inc >>= 1;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	790 } else {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	791 inc <<= (channel->block-1);
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	792 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	793 //detune
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	794 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	795 }
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	796 if (channel->pms) {
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	797 inc >>= 1;
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	798 }
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	799 if (operator->detune & 0x4) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	800 inc -= detune;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	801 //this can underflow, mask to 17-bit result
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	802 inc &= 0x1FFFF;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	803 } else {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	804 inc += detune;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	805 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	806 //multiple
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	807 if (operator->multiple) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	808 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	809 inc &= 0xFFFFF;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	810 } else {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	811 //0.5
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	812 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	813 }
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	814 //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	815 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	816 }
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	817
1909 508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	818 void ym_vgm_log(ym2612_context context, uint32_t master_clock, vgm_writer vgm)
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	819 {
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	820 vgm_ym2612_init(vgm, 6 * master_clock / context->clock_inc);
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	821 context->vgm = vgm;
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	822 for (uint8_t reg = YM_PART1_START; reg < YM_REG_END; reg++) {
1912 00fb99805445 Skip invalid registers when dumping initial YM2612 state to VGM log Michael Pavone <pavone@retrodev.com> parents: 1909 diff changeset	823 if ((reg >= REG_DETUNE_MULT && (reg & 3) == 3) \|\| (reg >= 0x2D && reg < REG_DETUNE_MULT) \|\| reg == 0x23 \|\| reg == 0x29) {
00fb99805445 Skip invalid registers when dumping initial YM2612 state to VGM log Michael Pavone <pavone@retrodev.com> parents: 1909 diff changeset	824 //skip invalid registers
00fb99805445 Skip invalid registers when dumping initial YM2612 state to VGM log Michael Pavone <pavone@retrodev.com> parents: 1909 diff changeset	825 continue;
00fb99805445 Skip invalid registers when dumping initial YM2612 state to VGM log Michael Pavone <pavone@retrodev.com> parents: 1909 diff changeset	826 }
1909 508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	827 vgm_ym2612_part1_write(context->vgm, context->current_cycle, reg, context->part1_regs[reg - YM_PART1_START]);
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	828 }
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	829
1909 508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	830 for (uint8_t reg = YM_PART2_START; reg < YM_REG_END; reg++) {
1912 00fb99805445 Skip invalid registers when dumping initial YM2612 state to VGM log Michael Pavone <pavone@retrodev.com> parents: 1909 diff changeset	831 if ((reg & 3) == 3 \|\| (reg >= REG_FNUM_LOW_CH3 && reg < REG_ALG_FEEDBACK)) {
00fb99805445 Skip invalid registers when dumping initial YM2612 state to VGM log Michael Pavone <pavone@retrodev.com> parents: 1909 diff changeset	832 //skip invalid registers
00fb99805445 Skip invalid registers when dumping initial YM2612 state to VGM log Michael Pavone <pavone@retrodev.com> parents: 1909 diff changeset	833 continue;
00fb99805445 Skip invalid registers when dumping initial YM2612 state to VGM log Michael Pavone <pavone@retrodev.com> parents: 1909 diff changeset	834 }
1909 508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	835 vgm_ym2612_part2_write(context->vgm, context->current_cycle, reg, context->part2_regs[reg - YM_PART2_START]);
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	836 }
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	837 }
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	838
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	839 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	840 {
1902 32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	841 context->write_cycle = context->current_cycle;
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	842 context->busy_start = context->current_cycle + context->clock_inc;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	843
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	844 if (context->selected_reg >= YM_REG_END) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	845 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	846 }
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	847 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	848 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	849 return;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	850 }
1909 508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	851 if (context->vgm) {
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	852 vgm_ym2612_part2_write(context->vgm, context->current_cycle, context->selected_reg, value);
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	853 }
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	854 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	855 } else {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	856 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	857 return;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	858 }
1909 508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	859 if (context->vgm) {
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	860 vgm_ym2612_part1_write(context->vgm, context->current_cycle, context->selected_reg, value);
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	861 }
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	862 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	863 }
1946 c3c62dbf1ceb WIP netplay support Michael Pavone <pavone@retrodev.com> parents: 1912 diff changeset	864 uint8_t buffer[3] = {context->selected_part, context->selected_reg, value};
c3c62dbf1ceb WIP netplay support Michael Pavone <pavone@retrodev.com> parents: 1912 diff changeset	865 event_log(EVENT_YM_REG, context->current_cycle, sizeof(buffer), buffer);
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	866 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	867 if (context->selected_reg < 0x30) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	868 //Shared regs
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	869 switch (context->selected_reg)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	870 {
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	871 //TODO: Test reg
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	872 case REG_LFO:
532 666210adf87b Comment out LFO debug printf Mike Pavone <pavone@retrodev.com> parents: 527 diff changeset	873 /*if ((value & 0x8) && !context->lfo_enable) {
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	874 printf("LFO Enabled, Freq: %d\n", value & 0x7);
532 666210adf87b Comment out LFO debug printf Mike Pavone <pavone@retrodev.com> parents: 527 diff changeset	875 }*/
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	876 context->lfo_enable = value & 0x8;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	877 if (!context->lfo_enable) {
2284 5a53a8453241 Fix envelope key scaling when CH3 special mode is active. Fixes sound effects in Toy Story and Maui Mallard Michael Pavone <pavone@retrodev.com> parents: 2255 diff changeset	878 context->lfo_counter = 0;
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	879 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	880 context->lfo_freq = value & 0x7;
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	881
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	882 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	883 case REG_TIMERA_HIGH:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	884 context->timer_a_load &= 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	885 context->timer_a_load \|= value << 2;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	886 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	887 case REG_TIMERA_LOW:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	888 context->timer_a_load &= 0xFFFC;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	889 context->timer_a_load \|= value & 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	890 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	891 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	892 context->timer_b_load = value;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	893 break;
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	894 case REG_TIME_CTRL: {
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	895 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	896 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	897 context->timer_control \|= BIT_TIMERA_LOAD;
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	898 }
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	899 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	900 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	901 context->timer_control \|= BIT_TIMERB_LOAD;
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	902 }
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	903 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	904 context->timer_control \|= value & 0xF;
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	905 if (value & BIT_TIMERA_RESET) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	906 context->status &= ~BIT_STATUS_TIMERA;
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	907 }
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	908 if (value & BIT_TIMERB_RESET) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	909 context->status &= ~BIT_STATUS_TIMERB;
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	910 }
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	911 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	912 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	913 }
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	914 uint8_t old_mode = context->ch3_mode;
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	915 context->ch3_mode = value & 0xC0;
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	916 if (context->ch3_mode != old_mode) {
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	917 for (int op = 2 * 4; op < 3*4; op++)
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	918 {
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	919 context->operators[op].phase_inc = ym_calc_phase_inc(context, context->operators + op, op);
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	920 }
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	921 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	922 break;
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	923 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	924 case REG_KEY_ONOFF: {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	925 uint8_t channel = value & 0x7;
386 6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	926 if (channel != 3 && channel != 7) {
6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	927 if (channel > 2) {
6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	928 channel--;
6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	929 }
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	930 uint8_t changes = channel == 2
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	931 ? (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	932 : 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	933 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	934 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	935 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	936 if (value & keyon_bits[bit]) {
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	937 first_key_on = 1;
e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	938 //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	939 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	940 } 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	941 //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	942 keyoff(context->operators + op);
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	943 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	944 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	945 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	946 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	947 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	948 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	949 case REG_DAC:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	950 if (context->dac_enable) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	951 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	952 //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	953 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	954 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	955 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	956 //printf("DAC Enable: %X\n", value);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	957 context->dac_enable = value & 0x80;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	958 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	959 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	960 } else if (context->selected_reg < 0xA0) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	961 //part
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	962 uint8_t op = context->selected_part ? (NUM_OPERATORS/2) : 0;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	963 //channel in part
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	964 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	965 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	966 //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	967 ym_operator * operator = context->operators + op;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	968 switch (context->selected_reg & 0xF0)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	969 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	970 case REG_DETUNE_MULT:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	971 operator->detune = value >> 4 & 0x7;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	972 operator->multiple = value & 0xF;
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	973 operator->phase_inc = ym_calc_phase_inc(context, operator, op);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	974 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	975 case REG_TOTAL_LEVEL:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	976 operator->total_level = (value & 0x7F) << 5;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	977 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	978 case REG_ATTACK_KS:
376 f6def5cdf1b4 Fix key scaling Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	979 operator->key_scaling = 3 - (value >> 6);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	980 operator->rates[PHASE_ATTACK] = value & 0x1F;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	981 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	982 case REG_DECAY_AM:
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	983 operator->am = value & 0x80;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	984 operator->rates[PHASE_DECAY] = value & 0x1F;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	985 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	986 case REG_SUSTAIN_RATE:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	987 operator->rates[PHASE_SUSTAIN] = value & 0x1F;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	988 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	989 case REG_S_LVL_R_RATE:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	990 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	991 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	992 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	993 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	994 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	995 break;
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	996 case REG_SSG_EG:
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	997 if (!(value & SSG_ENABLE)) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	998 value = 0;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	999 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	1000 if ((value ^ operator->ssg) & SSG_INVERT) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	1001 operator->inverted ^= SSG_INVERT;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	1002 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	1003 operator->ssg = value;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	1004 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1005 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1006 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1007 } else {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1008 uint8_t channel = context->selected_reg & 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1009 if (channel != 3) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1010 if (context->selected_part) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1011 channel += 3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1012 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1013 //printf("write targets channel %d\n", channel);
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1014 switch (context->selected_reg & 0xFC)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1015 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1016 case REG_FNUM_LOW:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1017 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	1018 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	1019 context->channels[channel].keycode = context->channels[channel].block << 2 \| fnum_to_keycode[context->channels[channel].fnum >> 7];
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1020 for (int op = channel * 4; op < (channel + 1) * 4; op++)
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1021 {
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1022 context->operators[op].phase_inc = ym_calc_phase_inc(context, context->operators + op, op);
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1023 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1024 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1025 case REG_BLOCK_FNUM_H:{
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1026 context->channels[channel].block_fnum_latch = value;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1027 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1028 }
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1029 case REG_FNUM_LOW_CH3:
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1030 if (channel < 3) {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1031 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	1032 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	1033 context->ch3_supp[channel].keycode = context->ch3_supp[channel].block << 2 \| fnum_to_keycode[context->ch3_supp[channel].fnum >> 7];
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1034 if (context->ch3_mode) {
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1035 int op = 2 * 4 + (channel < 2 ? (channel ^ 1) : channel);
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1036 context->operators[op].phase_inc = ym_calc_phase_inc(context, context->operators + op, op);
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1037 }
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1038 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1039 break;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1040 case REG_BLOCK_FN_CH3:
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1041 if (channel < 3) {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1042 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	1043 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1044 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1045 case REG_ALG_FEEDBACK:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1046 context->channels[channel].algorithm = value & 0x7;
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1047 switch (context->channels[channel].algorithm)
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1048 {
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1049 case 0:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1050 //operator 3 modulated by operator 2
1808 ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1051 //this uses a special op2 result reg on HW, but that reg will have the most recent
ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1052 //result from op2 when op3 starts executing
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1053 context->operators[channel4+1].mod_src[0] = &context->operators[channel4+2].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1054 context->operators[channel*4+1].mod_src[1] = NULL;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1055
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1056 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1057 context->operators[channel4+2].mod_src[0] = &context->operators[channel4+0].output;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1058
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1059 //operator 4 modulated by operator 3
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1060 context->operators[channel4+3].mod_src[0] = &context->operators[channel4+1].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1061 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1062 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1063 case 1:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1064 //operator 3 modulated by operator 1+2
1808 ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1065 //op1 starts executing before this, but due to pipeline length the most current result is
ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1066 //not available and instead the previous result is used
ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1067 context->operators[channel*4+1].mod_src[0] = &context->channels[channel].op1_old;
ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1068 //this uses a special op2 result reg on HW, but that reg will have the most recent
ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1069 //result from op2 when op3 starts executing
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1070 context->operators[channel4+1].mod_src[1] = &context->operators[channel4+2].output;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1071
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1072 //operator 2 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1073 context->operators[channel*4+2].mod_src[0] = NULL;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1074
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1075 //operator 4 modulated by operator 3
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1076 context->operators[channel4+3].mod_src[0] = &context->operators[channel4+1].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1077 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1078 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1079 case 2:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1080 //operator 3 modulated by operator 2
1808 ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1081 //this uses a special op2 result reg on HW, but that reg will have the most recent
ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1082 //result from op2 when op3 starts executing
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1083 context->operators[channel4+1].mod_src[0] = &context->operators[channel4+2].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1084 context->operators[channel*4+1].mod_src[1] = NULL;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1085
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1086 //operator 2 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1087 context->operators[channel*4+2].mod_src[0] = NULL;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1088
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1089 //operator 4 modulated by operator 1+3
1808 ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1090 //this uses a special op1 result reg on HW, but that reg will have the most recent
ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1091 //result from op1 when op4 starts executing
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1092 context->operators[channel4+3].mod_src[0] = &context->operators[channel4+0].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1093 context->operators[channel4+3].mod_src[1] = &context->operators[channel4+1].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1094 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1095 case 3:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1096 //operator 3 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1097 context->operators[channel*4+1].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1098 context->operators[channel*4+1].mod_src[1] = NULL;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1099
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1100 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1101 context->operators[channel4+2].mod_src[0] = &context->operators[channel4+0].output;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1102
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1103 //operator 4 modulated by operator 2+3
1808 ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1104 //op2 starts executing before this, but due to pipeline length the most current result is
ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1105 //not available and instead the previous result is used
ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1106 context->operators[channel*4+3].mod_src[0] = &context->channels[channel].op2_old;
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1107 context->operators[channel4+3].mod_src[1] = &context->operators[channel4+1].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1108 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1109 case 4:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1110 //operator 3 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1111 context->operators[channel*4+1].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1112 context->operators[channel*4+1].mod_src[1] = NULL;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1113
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1114 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1115 context->operators[channel4+2].mod_src[0] = &context->operators[channel4+0].output;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1116
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1117 //operator 4 modulated by operator 3
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1118 context->operators[channel4+3].mod_src[0] = &context->operators[channel4+1].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1119 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1120 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1121 case 5:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1122 //operator 3 modulated by operator 1
1808 ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1123 //op1 starts executing before this, but due to pipeline length the most current result is
ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1124 //not available and instead the previous result is used
ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1125 context->operators[channel*4+1].mod_src[0] = &context->channels[channel].op1_old;
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1126 context->operators[channel*4+1].mod_src[1] = NULL;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1127
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1128 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1129 context->operators[channel4+2].mod_src[0] = &context->operators[channel4+0].output;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1130
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1131 //operator 4 modulated by operator 1
1808 ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1132 //this uses a special op1 result reg on HW, but that reg will have the most recent
ce6881d64eef Operator results should be delayed by one sample when used as a modulator in some cases based on relative execution time and pipeline length Michael Pavone <pavone@retrodev.com> parents: 1803 diff changeset	1133 //result from op1 when op4 starts executing
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1134 context->operators[channel4+3].mod_src[0] = &context->operators[channel4+0].output;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1135 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1136 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1137 case 6:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1138 //operator 3 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1139 context->operators[channel*4+1].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1140 context->operators[channel*4+1].mod_src[1] = NULL;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1141
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1142 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1143 context->operators[channel4+2].mod_src[0] = &context->operators[channel4+0].output;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1144
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1145 //operator 4 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1146 context->operators[channel*4+3].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1147 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1148 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1149 case 7:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1150 //everything is an output so no modulation (except for op 1 feedback)
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1151 context->operators[channel*4+1].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1152 context->operators[channel*4+1].mod_src[1] = NULL;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1153
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1154 context->operators[channel*4+2].mod_src[0] = NULL;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1155
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1156 context->operators[channel*4+3].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1157 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1158 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1159 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1160 context->channels[channel].feedback = value >> 3 & 0x7;
527 7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	1161 //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	1162 break;
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1163 case REG_LR_AMS_PMS: {
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1164 uint8_t old_pms = context->channels[channel].pms;
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	1165 context->channels[channel].pms = (value & 0x7) * 32;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1166 context->channels[channel].ams = value >> 4 & 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1167 context->channels[channel].lr = value & 0xC0;
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1168 if (old_pms != context->channels[channel].pms) {
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1169 for (int op = channel * 4; op < (channel + 1) * 4; op++)
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1170 {
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1171 context->operators[op].phase_inc = ym_calc_phase_inc(context, context->operators + op, op);
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1172 }
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1173 }
369 fc820ab1394b Fix left/right enable default value Mike Pavone <pavone@retrodev.com> parents: 365 diff changeset	1174 //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	1175 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1176 }
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1177 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1178 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1179 }
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	1180 }
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	1181
1904 8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1182 uint8_t ym_read_status(ym2612_context * context, uint32_t cycle, uint32_t port)
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	1183 {
1904 8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1184 uint8_t status;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1185 port &= context->status_address_mask;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1186 if (port) {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1187 if (context->last_status_cycle != CYCLE_NEVER && cycle - context->last_status_cycle > context->invalid_status_decay) {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1188 context->last_status = 0;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1189 }
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1190 status = context->last_status;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1191 } else {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1192 status = context->status;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1193 if (cycle >= context->busy_start && cycle < context->busy_start + context->busy_cycles) {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1194 status \|= 0x80;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1195 }
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1196 context->last_status = status;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1197 context->last_status_cycle = cycle;
1902 32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	1198 }
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	1199 return status;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1200
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	1201 }
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	1202
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	1203 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	1204 {
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	1205 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	1206 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	1207 "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	1208 "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	1209 "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	1210 "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	1211 "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	1212 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	1213 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	1214 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	1215 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	1216 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	1217 "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	1218 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	1219 }
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	1220 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	1221 {
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	1222 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	1223 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	1224 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	1225 } 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	1226 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	1227 }
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	1228 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	1229 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	1230 " 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	1231 " 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	1232 " 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	1233 " 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	1234 " 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	1235 " 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	1236 " 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	1237 " 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	1238 " 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	1239 " 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	1240 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	1241 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	1242 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	1243 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	1244 }
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	1245 }
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	1246
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	1247 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	1248 {
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1249 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	1250 "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	1251 "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	1252 "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	1253 "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	1254 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	1255 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	1256 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	1257 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	1258 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	1259 "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	1260 "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	1261 "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	1262 "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	1263 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	1264 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	1265 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	1266 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	1267 }
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1268
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1269 void ym_serialize(ym2612_context context, serialize_buffer buf)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1270 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1271 save_buffer8(buf, context->part1_regs, YM_PART1_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1272 save_buffer8(buf, context->part2_regs, YM_PART2_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1273 for (int i = 0; i < NUM_OPERATORS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1274 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1275 save_int32(buf, context->operators[i].phase_counter);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1276 save_int16(buf, context->operators[i].envelope);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1277 save_int16(buf, context->operators[i].output);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1278 save_int8(buf, context->operators[i].env_phase);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1279 save_int8(buf, context->operators[i].inverted);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1280 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1281 for (int i = 0; i < NUM_CHANNELS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1282 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1283 save_int16(buf, context->channels[i].output);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1284 save_int16(buf, context->channels[i].op1_old);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1285 //Due to the latching behavior, these need to be saved
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1286 //even though duplicate info is probably in the regs array
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1287 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	1288 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	1289 save_int8(buf, context->channels[i].keyon);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1290 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1291 for (int i = 0; i < 3; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1292 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1293 //Due to the latching behavior, these need to be saved
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1294 //even though duplicate info is probably in the regs array
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1295 save_int8(buf, context->ch3_supp[i].block);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1296 save_int8(buf, context->ch3_supp[i].fnum);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1297 }
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	1298 save_int8(buf, context->timer_control);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1299 save_int16(buf, context->timer_a);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1300 save_int8(buf, context->timer_b);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1301 save_int8(buf, context->sub_timer_b);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1302 save_int16(buf, context->env_counter);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1303 save_int8(buf, context->current_op);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1304 save_int8(buf, context->current_env_op);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1305 save_int8(buf, context->lfo_counter);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1306 save_int8(buf, context->csm_keyon);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1307 save_int8(buf, context->status);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1308 save_int8(buf, context->selected_reg);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1309 save_int8(buf, context->selected_part);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1310 save_int32(buf, context->current_cycle);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1311 save_int32(buf, context->write_cycle);
1902 32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	1312 save_int32(buf, context->busy_start);
1904 8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1313 save_int32(buf, context->last_status_cycle);
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1314 save_int32(buf, context->invalid_status_decay);
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1315 save_int8(buf, context->last_status);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1316 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1317
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1318 void ym_deserialize(deserialize_buffer buf, void vcontext)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1319 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1320 ym2612_context *context = vcontext;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1321 uint8_t temp_regs[YM_PART1_REGS];
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1322 load_buffer8(buf, temp_regs, YM_PART1_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1323 context->selected_part = 0;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1324 for (int i = 0; i < YM_PART1_REGS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1325 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1326 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	1327 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	1328 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	1329 } 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	1330 context->selected_reg = reg;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1331 ym_data_write(context, temp_regs[i]);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1332 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1333 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1334 load_buffer8(buf, temp_regs, YM_PART2_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1335 context->selected_part = 1;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1336 for (int i = 0; i < YM_PART2_REGS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1337 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1338 uint8_t reg = YM_PART2_START + i;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1339 if (reg != REG_FNUM_LOW) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1340 context->selected_reg = reg;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1341 ym_data_write(context, temp_regs[i]);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1342 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1343 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1344 for (int i = 0; i < NUM_OPERATORS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1345 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1346 context->operators[i].phase_counter = load_int32(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1347 context->operators[i].envelope = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1348 context->operators[i].output = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1349 context->operators[i].env_phase = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1350 if (context->operators[i].env_phase > PHASE_RELEASE) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1351 context->operators[i].env_phase = PHASE_RELEASE;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1352 }
1450 08bc099a622f Save entirety of fnum register, not just the low 8 bits Michael Pavone <pavone@retrodev.com> parents: 1447 diff changeset	1353 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	1354 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1355 for (int i = 0; i < NUM_CHANNELS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1356 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1357 context->channels[i].output = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1358 context->channels[i].op1_old = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1359 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	1360 context->channels[i].fnum = load_int16(buf);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1361 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	1362 context->channels[i].keyon = load_int8(buf);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1363 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1364 for (int i = 0; i < 3; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1365 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1366 context->ch3_supp[i].block = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1367 context->ch3_supp[i].fnum = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1368 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	1369 }
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	1370 context->timer_control = load_int8(buf);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1371 context->timer_a = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1372 context->timer_b = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1373 context->sub_timer_b = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1374 context->env_counter = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1375 context->current_op = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1376 if (context->current_op >= NUM_OPERATORS) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1377 context->current_op = 0;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1378 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1379 context->current_env_op = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1380 if (context->current_env_op >= NUM_OPERATORS) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1381 context->current_env_op = 0;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1382 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1383 context->lfo_counter = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1384 context->csm_keyon = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1385 context->status = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1386 context->selected_reg = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1387 context->selected_part = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1388 context->current_cycle = load_int32(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1389 context->write_cycle = load_int32(buf);
1902 32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	1390 context->busy_start = load_int32(buf);
1904 8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1391 if (buf->size > buf->cur_pos) {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1392 context->last_status_cycle = load_int32(buf);
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1393 context->invalid_status_decay = load_int32(buf);
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1394 context->last_status = load_int8(buf);
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1395 } else {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1396 context->last_status = context->status;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1397 context->last_status_cycle = context->write_cycle;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1398 }
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1399 }
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1400
2255 74112041b2c7 Proper calculation of sample rate for YM2612/PSG oscilloscope view Michael Pavone <pavone@retrodev.com> parents: 2243 diff changeset	1401 void ym_enable_scope(ym2612_context context, oscilloscope scope, uint32_t master_clock)
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1402 {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1403 static const char *names[] = {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1404 "YM2612 #1",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1405 "YM2612 #2",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1406 "YM2612 #3",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1407 "YM2612 #4",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1408 "YM2612 #5",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1409 "YM2612 #6"
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1410 };
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1411 context->scope = scope;
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1412 for (int i = 0; i < NUM_CHANNELS; i++)
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1413 {
2255 74112041b2c7 Proper calculation of sample rate for YM2612/PSG oscilloscope view Michael Pavone <pavone@retrodev.com> parents: 2243 diff changeset	1414 context->channels[i].scope_channel = scope_add_channel(scope, names[i], master_clock / (context->clock_inc * NUM_OPERATORS));
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1415 }
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1416 }

Mercurial > repos > blastem

annotate ym2612.c @ 2289:92449b47cce8