repos/blastem: ym2612.c annotate

annotate ym2612.c @ 2523:573da2a2e6bb

Fix debug window crash on Mac OS

author	Michael Pavone <pavone@retrodev.com>
date	Thu, 24 Oct 2024 21:08:10 -0700
parents	9fb04d29049e
children	76259d246695

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 }
2302 0343f0d5add0 Fix libretro build for real Michael Pavone <pavone@retrodev.com> parents: 2287 diff changeset	638 #ifndef IS_LIB
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	639 if (context->scope) {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	640 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	641 }
2302 0343f0d5add0 Fix libretro build for real Michael Pavone <pavone@retrodev.com> parents: 2287 diff changeset	642 #endif
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	643 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	644 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	645 } 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	646 if (value >= 0) {
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 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	649 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	650 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	651 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	652 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	653 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	654 } 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	655 if (value >= 0) {
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 } else {
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	658 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	659 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	660 }
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 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	663 }
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	664
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	665 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	666 {
1879 43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	667 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	668 return;
43a6cee4fd00 Split ym_run into a few different functions to enhance clarity Michael Pavone <pavone@retrodev.com> parents: 1808 diff changeset	669 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	670 //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	671 //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	672 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	673 //Update timers at beginning of 144 cycle period
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	674 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	675 ym_run_timers(context);
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	676 }
359 cc39629e8d06 YM2612 WIP snapshot before register refactor Mike Pavone <pavone@retrodev.com> parents: 288 diff changeset	677 //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	678 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	679 uint32_t op = context->current_env_op;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	680 ym_operator * operator = context->operators + op;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	681 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	682 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	683 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	684 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	685 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	686 context->env_counter++;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	687 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	688 }
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	689
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	690 //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	691 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	692 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	693 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	694 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	695 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	696 }
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	697
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 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	699 //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	700 }
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
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	702 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	703 {
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	704 //printf("address_write_part1: %X\n", address);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	705 context->selected_reg = address;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	706 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	707 }
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
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	709 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	710 {
364 62177cc39049 Incredibly broken YM2612 support plus a fix to Z80 bus request Mike Pavone <pavone@retrodev.com> parents: 362 diff changeset	711 //printf("address_write_part2: %X\n", address);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	712 context->selected_reg = address;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	713 context->selected_part = 1;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	714 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	715
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	716 static uint8_t fnum_to_keycode[] = {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	717 //F11 = 0
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	718 0,0,0,0,0,0,0,1,
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	719 //F11 = 1
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	720 2,3,3,3,3,3,3,3
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	721 };
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	722
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	723 //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	724 static uint32_t detune_table[][4] = {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	725 {0, 0, 1, 2}, //0 (0x00)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	726 {0, 0, 1, 2}, //1 (0x01)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	727 {0, 0, 1, 2}, //2 (0x02)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	728 {0, 0, 1, 2}, //3 (0x03)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	729 {0, 1, 2, 2}, //4 (0x04)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	730 {0, 1, 2, 3}, //5 (0x05)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	731 {0, 1, 2, 3}, //6 (0x06)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	732 {0, 1, 2, 3}, //7 (0x07)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	733 {0, 1, 2, 4}, //8 (0x08)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	734 {0, 1, 3, 4}, //9 (0x09)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	735 {0, 1, 3, 4}, //10 (0x0A)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	736 {0, 1, 3, 5}, //11 (0x0B)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	737 {0, 2, 4, 5}, //12 (0x0C)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	738 {0, 2, 4, 6}, //13 (0x0D)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	739 {0, 2, 4, 6}, //14 (0x0E)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	740 {0, 2, 5, 7}, //15 (0x0F)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	741 {0, 2, 5, 8}, //16 (0x10)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	742 {0, 3, 6, 8}, //17 (0x11)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	743 {0, 3, 6, 9}, //18 (0x12)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	744 {0, 3, 7,10}, //19 (0x13)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	745 {0, 4, 8,11}, //20 (0x14)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	746 {0, 4, 8,12}, //21 (0x15)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	747 {0, 4, 9,13}, //22 (0x16)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	748 {0, 5,10,14}, //23 (0x17)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	749 {0, 5,11,16}, //24 (0x18)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	750 {0, 6,12,17}, //25 (0x19)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	751 {0, 6,13,19}, //26 (0x1A)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	752 {0, 7,14,20}, //27 (0x1B)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	753 {0, 8,16,22}, //28 (0x1C)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	754 {0, 8,16,22}, //29 (0x1D)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	755 {0, 8,16,22}, //30 (0x1E)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	756 {0, 8,16,22}
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	757 }; //31 (0x1F)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	758
1102 c15896605bf2 Clean up symbol visiblity and delete a ltitle bit of dead code Michael Pavone <pavone@retrodev.com> parents: 1002 diff changeset	759 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	760 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	761 uint32_t chan_num = op / 4;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	762 //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	763 //base frequency
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	764 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	765 uint32_t inc, detune;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	766 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	767 //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	768 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	769 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	770 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	771 }
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	772 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	773 if (channel->pms) {
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	774 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	775 inc &= 0xFFF;
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	776 }
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	777 if (!context->ch3_supp[index].block) {
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	778 inc >>= 1;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	779 } else {
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	780 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	781 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	782 //detune
738 8972378e314f Fix register to operator mapping for channel 3 special mode Michael Pavone <pavone@retrodev.com> parents: 650 diff changeset	783 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	784 } else {
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	785 inc = channel->fnum;
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	786 if (channel->pms) {
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	787 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	788 inc &= 0xFFF;
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	789 }
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	790 if (!channel->block) {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	791 inc >>= 1;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	792 } else {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	793 inc <<= (channel->block-1);
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	794 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	795 //detune
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	796 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	797 }
935 01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	798 if (channel->pms) {
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	799 inc >>= 1;
01fb50390b27 Remove phase increment caching. Fix LFO phase modulation calculation Michael Pavone <pavone@retrodev.com> parents: 930 diff changeset	800 }
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	801 if (operator->detune & 0x4) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	802 inc -= detune;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	803 //this can underflow, mask to 17-bit result
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	804 inc &= 0x1FFFF;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	805 } else {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	806 inc += detune;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	807 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	808 //multiple
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	809 if (operator->multiple) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	810 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	811 inc &= 0xFFFFF;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	812 } else {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	813 //0.5
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	814 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	815 }
365 3ba3b6656fff Actually save the shifted phase inc after applying the block shift Mike Pavone <pavone@retrodev.com> parents: 364 diff changeset	816 //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	817 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	818 }
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	819
1909 508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	820 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	821 {
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	822 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	823 context->vgm = vgm;
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	824 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	825 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	826 //skip invalid registers
00fb99805445 Skip invalid registers when dumping initial YM2612 state to VGM log Michael Pavone <pavone@retrodev.com> parents: 1909 diff changeset	827 continue;
00fb99805445 Skip invalid registers when dumping initial YM2612 state to VGM log Michael Pavone <pavone@retrodev.com> parents: 1909 diff changeset	828 }
1909 508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	829 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	830 }
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	831
1909 508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	832 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	833 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	834 //skip invalid registers
00fb99805445 Skip invalid registers when dumping initial YM2612 state to VGM log Michael Pavone <pavone@retrodev.com> parents: 1909 diff changeset	835 continue;
00fb99805445 Skip invalid registers when dumping initial YM2612 state to VGM log Michael Pavone <pavone@retrodev.com> parents: 1909 diff changeset	836 }
1909 508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	837 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	838 }
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	839 }
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	840
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	841 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	842 {
1902 32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	843 context->write_cycle = context->current_cycle;
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	844 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	845
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	846 if (context->selected_reg >= YM_REG_END) {
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	847 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	848 }
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	849 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	850 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	851 return;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	852 }
1909 508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	853 if (context->vgm) {
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	854 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	855 }
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	856 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	857 } else {
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	858 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	859 return;
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	860 }
1909 508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	861 if (context->vgm) {
508522f08e4d Initial stab at VGM logging support Michael Pavone <pavone@retrodev.com> parents: 1904 diff changeset	862 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	863 }
451 b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness Mike Pavone <pavone@retrodev.com> parents: 448 diff changeset	864 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	865 }
1946 c3c62dbf1ceb WIP netplay support Michael Pavone <pavone@retrodev.com> parents: 1912 diff changeset	866 uint8_t buffer[3] = {context->selected_part, context->selected_reg, value};
c3c62dbf1ceb WIP netplay support Michael Pavone <pavone@retrodev.com> parents: 1912 diff changeset	867 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	868 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	869 if (context->selected_reg < 0x30) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	870 //Shared regs
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	871 switch (context->selected_reg)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	872 {
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	873 //TODO: Test reg
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	874 case REG_LFO:
532 666210adf87b Comment out LFO debug printf Mike Pavone <pavone@retrodev.com> parents: 527 diff changeset	875 /*if ((value & 0x8) && !context->lfo_enable) {
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	876 printf("LFO Enabled, Freq: %d\n", value & 0x7);
532 666210adf87b Comment out LFO debug printf Mike Pavone <pavone@retrodev.com> parents: 527 diff changeset	877 }*/
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	878 context->lfo_enable = value & 0x8;
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	879 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	880 context->lfo_counter = 0;
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	881 }
baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	882 context->lfo_freq = value & 0x7;
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	883
411 baf4688901f2 Initial stab at LFO phase modulation Mike Pavone <pavone@retrodev.com> parents: 407 diff changeset	884 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	885 case REG_TIMERA_HIGH:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	886 context->timer_a_load &= 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	887 context->timer_a_load \|= value << 2;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	888 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	889 case REG_TIMERA_LOW:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	890 context->timer_a_load &= 0xFFFC;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	891 context->timer_a_load \|= value & 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	892 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	893 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	894 context->timer_b_load = value;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	895 break;
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	896 case REG_TIME_CTRL: {
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	897 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	898 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	899 context->timer_control \|= BIT_TIMERA_LOAD;
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	900 }
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	901 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	902 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	903 context->timer_control \|= BIT_TIMERB_LOAD;
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	904 }
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	905 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	906 context->timer_control \|= value & 0xF;
403 f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	907 if (value & BIT_TIMERA_RESET) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	908 context->status &= ~BIT_STATUS_TIMERA;
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	909 }
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	910 if (value & BIT_TIMERB_RESET) {
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	911 context->status &= ~BIT_STATUS_TIMERB;
f0a3f86595ae Fix YM2612 timers Mike Pavone <pavone@retrodev.com> parents: 396 diff changeset	912 }
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	913 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	914 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	915 }
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	916 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	917 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	918 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	919 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	920 {
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	921 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	922 }
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	923 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	924 break;
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	925 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	926 case REG_KEY_ONOFF: {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	927 uint8_t channel = value & 0x7;
386 6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	928 if (channel != 3 && channel != 7) {
6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	929 if (channel > 2) {
6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	930 channel--;
6e5c4f3ab0e2 Fix channel mapping in key on/off register Mike Pavone <pavone@retrodev.com> parents: 383 diff changeset	931 }
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	932 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	933 ? (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	934 : 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	935 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	936 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	937 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	938 if (value & keyon_bits[bit]) {
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	939 first_key_on = 1;
e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	940 //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	941 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	942 } 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	943 //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	944 keyoff(context->operators + op);
448 e85a107e6ec0 Fix handling of key on in YM2612 core Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	945 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	946 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	947 }
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 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	950 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	951 case REG_DAC:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	952 if (context->dac_enable) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	953 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	954 //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	955 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	956 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	957 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	958 //printf("DAC Enable: %X\n", value);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	959 context->dac_enable = value & 0x80;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	960 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	961 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	962 } else if (context->selected_reg < 0xA0) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	963 //part
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	964 uint8_t op = context->selected_part ? (NUM_OPERATORS/2) : 0;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	965 //channel in part
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	966 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	967 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	968 //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	969 ym_operator * operator = context->operators + op;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	970 switch (context->selected_reg & 0xF0)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	971 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	972 case REG_DETUNE_MULT:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	973 operator->detune = value >> 4 & 0x7;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	974 operator->multiple = value & 0xF;
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	975 operator->phase_inc = ym_calc_phase_inc(context, operator, op);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	976 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	977 case REG_TOTAL_LEVEL:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	978 operator->total_level = (value & 0x7F) << 5;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	979 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	980 case REG_ATTACK_KS:
376 f6def5cdf1b4 Fix key scaling Mike Pavone <pavone@retrodev.com> parents: 374 diff changeset	981 operator->key_scaling = 3 - (value >> 6);
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	982 operator->rates[PHASE_ATTACK] = value & 0x1F;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	983 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	984 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	985 operator->am = value & 0x80;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	986 operator->rates[PHASE_DECAY] = value & 0x1F;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	987 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	988 case REG_SUSTAIN_RATE:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	989 operator->rates[PHASE_SUSTAIN] = value & 0x1F;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	990 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	991 case REG_S_LVL_R_RATE:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	992 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	993 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	994 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	995 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	996 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	997 break;
1301 babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	998 case REG_SSG_EG:
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	999 if (!(value & SSG_ENABLE)) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	1000 value = 0;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	1001 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	1002 if ((value ^ operator->ssg) & SSG_INVERT) {
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	1003 operator->inverted ^= SSG_INVERT;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	1004 }
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	1005 operator->ssg = value;
babff81e4cfd Initial implementation of YM2612 SSG-EG mode Michael Pavone <pavone@retrodev.com> parents: 1300 diff changeset	1006 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1007 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1008 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1009 } else {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1010 uint8_t channel = context->selected_reg & 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1011 if (channel != 3) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1012 if (context->selected_part) {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1013 channel += 3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1014 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1015 //printf("write targets channel %d\n", channel);
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1016 switch (context->selected_reg & 0xFC)
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1017 {
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1018 case REG_FNUM_LOW:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1019 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	1020 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	1021 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	1022 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	1023 {
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1024 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	1025 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1026 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1027 case REG_BLOCK_FNUM_H:{
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1028 context->channels[channel].block_fnum_latch = value;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1029 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1030 }
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1031 case REG_FNUM_LOW_CH3:
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1032 if (channel < 3) {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1033 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	1034 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	1035 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	1036 if (context->ch3_mode) {
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1037 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	1038 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	1039 }
383 72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1040 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1041 break;
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1042 case REG_BLOCK_FN_CH3:
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1043 if (channel < 3) {
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1044 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	1045 }
72933100c55c Initial implementation of channel 3 special mode Mike Pavone <pavone@retrodev.com> parents: 382 diff changeset	1046 break;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1047 case REG_ALG_FEEDBACK:
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1048 context->channels[channel].algorithm = value & 0x7;
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1049 switch (context->channels[channel].algorithm)
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1050 {
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1051 case 0:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1052 //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	1053 //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	1054 //result from op2 when op3 starts executing
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1055 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	1056 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	1057
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1058 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1059 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	1060
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1061 //operator 4 modulated by operator 3
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1062 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	1063 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1064 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1065 case 1:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1066 //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	1067 //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	1068 //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	1069 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	1070 //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	1071 //result from op2 when op3 starts executing
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1072 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	1073
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1074 //operator 2 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1075 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	1076
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1077 //operator 4 modulated by operator 3
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1078 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	1079 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1080 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1081 case 2:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1082 //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	1083 //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	1084 //result from op2 when op3 starts executing
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1085 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	1086 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	1087
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1088 //operator 2 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1089 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	1090
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1091 //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	1092 //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	1093 //result from op1 when op4 starts executing
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1094 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	1095 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	1096 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1097 case 3:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1098 //operator 3 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1099 context->operators[channel*4+1].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1100 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	1101
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1102 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1103 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	1104
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1105 //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	1106 //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	1107 //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	1108 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	1109 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	1110 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1111 case 4:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1112 //operator 3 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1113 context->operators[channel*4+1].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1114 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	1115
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1116 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1117 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	1118
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1119 //operator 4 modulated by operator 3
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1120 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	1121 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1122 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1123 case 5:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1124 //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	1125 //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	1126 //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	1127 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	1128 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	1129
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1130 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1131 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	1132
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1133 //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	1134 //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	1135 //result from op1 when op4 starts executing
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1136 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	1137 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1138 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1139 case 6:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1140 //operator 3 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1141 context->operators[channel*4+1].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1142 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	1143
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1144 //operator 2 modulated by operator 1
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1145 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	1146
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1147 //operator 4 unmodulated
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1148 context->operators[channel*4+3].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1149 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1150 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1151 case 7:
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1152 //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	1153 context->operators[channel*4+1].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1154 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	1155
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1156 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	1157
1656 804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1158 context->operators[channel*4+3].mod_src[0] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1159 context->operators[channel*4+3].mod_src[1] = NULL;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1160 break;
804f13c090b4 Optimize YM operator modulation Mike Pavone <pavone@retrodev.com> parents: 1654 diff changeset	1161 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1162 context->channels[channel].feedback = value >> 3 & 0x7;
527 7df7f493b3b6 Fix operator 1 self-feedback Michael Pavone <pavone@retrodev.com> parents: 522 diff changeset	1163 //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	1164 break;
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1165 case REG_LR_AMS_PMS: {
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1166 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	1167 context->channels[channel].pms = (value & 0x7) * 32;
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1168 context->channels[channel].ams = value >> 4 & 0x3;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1169 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	1170 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	1171 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	1172 {
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1173 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	1174 }
e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1175 }
369 fc820ab1394b Fix left/right enable default value Mike Pavone <pavone@retrodev.com> parents: 365 diff changeset	1176 //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	1177 break;
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1178 }
1880 e77f7a7c79a5 Cache operator phase increment for a small perf improvement Michael Pavone <pavone@retrodev.com> parents: 1879 diff changeset	1179 }
362 b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1180 }
b7c3facee762 YM2612 WIP update Mike Pavone <pavone@retrodev.com> parents: 359 diff changeset	1181 }
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	1182 }
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 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	1185 {
1904 8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1186 uint8_t status;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1187 port &= context->status_address_mask;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1188 if (port) {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1189 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	1190 context->last_status = 0;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1191 }
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1192 status = context->last_status;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1193 } else {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1194 status = context->status;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1195 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	1196 status \|= 0x80;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1197 }
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1198 context->last_status = status;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1199 context->last_status_cycle = cycle;
1902 32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	1200 }
32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	1201 return status;
2081 cfd53c94fffb Initial stab at RF5C164 emulation Michael Pavone <pavone@retrodev.com> parents: 2029 diff changeset	1202
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	1203 }
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	1204
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	1205 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	1206 {
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 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	1208 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	1209 "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	1210 "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	1211 "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	1212 "AMS: %d\n"
2517 9fb04d29049e Include block and f-num values in ymchannel debug output Michael Pavone <pavone@retrodev.com> parents: 2302 diff changeset	1213 "PMS: %d\n"
9fb04d29049e Include block and f-num values in ymchannel debug output Michael Pavone <pavone@retrodev.com> parents: 2302 diff changeset	1214 "Block: %d\n"
9fb04d29049e Include block and f-num values in ymchannel debug output Michael Pavone <pavone@retrodev.com> parents: 2302 diff changeset	1215 "F-Num: %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	1216 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	1217 chan->lr == 0xC0 ? "LR" : chan->lr == 0x80 ? "L" : chan->lr == 0x40 ? "R" : "",
2517 9fb04d29049e Include block and f-num values in ymchannel debug output Michael Pavone <pavone@retrodev.com> parents: 2302 diff changeset	1218 chan->ams, chan->pms, chan->block, chan->fnum);
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	1219 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	1220 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	1221 "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	1222 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	1223 }
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	1224 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	1225 {
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 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	1227 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	1228 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	1229 } 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	1230 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	1231 }
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 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	1233 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	1234 " 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	1235 " 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	1236 " 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	1237 " 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	1238 " 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	1239 " 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	1240 " 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	1241 " 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	1242 " 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	1243 " 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	1244 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	1245 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	1246 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	1247 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	1248 }
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	1249 }
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	1250
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	1251 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	1252 {
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 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	1254 "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	1255 "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	1256 "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	1257 "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	1258 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	1259 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	1260 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	1261 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	1262 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	1263 "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	1264 "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	1265 "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	1266 "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	1267 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	1268 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	1269 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	1270 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	1271 }
f33e8d88ab6f Add yt debug command for printing YM-2612 timer info. Fix AMS shift values. Michael Pavone <pavone@retrodev.com> parents: 929 diff changeset	1272
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1273 void ym_serialize(ym2612_context context, serialize_buffer buf)
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_buffer8(buf, context->part1_regs, YM_PART1_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1276 save_buffer8(buf, context->part2_regs, YM_PART2_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1277 for (int i = 0; i < NUM_OPERATORS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1278 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1279 save_int32(buf, context->operators[i].phase_counter);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1280 save_int16(buf, context->operators[i].envelope);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1281 save_int16(buf, context->operators[i].output);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1282 save_int8(buf, context->operators[i].env_phase);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1283 save_int8(buf, context->operators[i].inverted);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1284 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1285 for (int i = 0; i < NUM_CHANNELS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1286 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1287 save_int16(buf, context->channels[i].output);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1288 save_int16(buf, context->channels[i].op1_old);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1289 //Due to the latching behavior, these need to be saved
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1290 //even though duplicate info is probably in the regs array
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1291 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	1292 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	1293 save_int8(buf, context->channels[i].keyon);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1294 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1295 for (int i = 0; i < 3; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1296 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1297 //Due to the latching behavior, these need to be saved
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1298 //even though duplicate info is probably in the regs array
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1299 save_int8(buf, context->ch3_supp[i].block);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1300 save_int8(buf, context->ch3_supp[i].fnum);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1301 }
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	1302 save_int8(buf, context->timer_control);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1303 save_int16(buf, context->timer_a);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1304 save_int8(buf, context->timer_b);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1305 save_int8(buf, context->sub_timer_b);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1306 save_int16(buf, context->env_counter);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1307 save_int8(buf, context->current_op);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1308 save_int8(buf, context->current_env_op);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1309 save_int8(buf, context->lfo_counter);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1310 save_int8(buf, context->csm_keyon);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1311 save_int8(buf, context->status);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1312 save_int8(buf, context->selected_reg);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1313 save_int8(buf, context->selected_part);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1314 save_int32(buf, context->current_cycle);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1315 save_int32(buf, context->write_cycle);
1902 32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	1316 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	1317 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	1318 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	1319 save_int8(buf, context->last_status);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1320 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1321
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1322 void ym_deserialize(deserialize_buffer buf, void vcontext)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1323 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1324 ym2612_context *context = vcontext;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1325 uint8_t temp_regs[YM_PART1_REGS];
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1326 load_buffer8(buf, temp_regs, YM_PART1_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1327 context->selected_part = 0;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1328 for (int i = 0; i < YM_PART1_REGS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1329 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1330 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	1331 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	1332 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	1333 } 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	1334 context->selected_reg = reg;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1335 ym_data_write(context, temp_regs[i]);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1336 }
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 load_buffer8(buf, temp_regs, YM_PART2_REGS);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1339 context->selected_part = 1;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1340 for (int i = 0; i < YM_PART2_REGS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1341 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1342 uint8_t reg = YM_PART2_START + i;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1343 if (reg != REG_FNUM_LOW) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1344 context->selected_reg = reg;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1345 ym_data_write(context, temp_regs[i]);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1346 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1347 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1348 for (int i = 0; i < NUM_OPERATORS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1349 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1350 context->operators[i].phase_counter = load_int32(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1351 context->operators[i].envelope = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1352 context->operators[i].output = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1353 context->operators[i].env_phase = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1354 if (context->operators[i].env_phase > PHASE_RELEASE) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1355 context->operators[i].env_phase = PHASE_RELEASE;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1356 }
1450 08bc099a622f Save entirety of fnum register, not just the low 8 bits Michael Pavone <pavone@retrodev.com> parents: 1447 diff changeset	1357 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	1358 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1359 for (int i = 0; i < NUM_CHANNELS; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1360 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1361 context->channels[i].output = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1362 context->channels[i].op1_old = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1363 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	1364 context->channels[i].fnum = load_int16(buf);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1365 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	1366 context->channels[i].keyon = load_int8(buf);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1367 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1368 for (int i = 0; i < 3; i++)
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1369 {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1370 context->ch3_supp[i].block = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1371 context->ch3_supp[i].fnum = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1372 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	1373 }
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	1374 context->timer_control = load_int8(buf);
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1375 context->timer_a = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1376 context->timer_b = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1377 context->sub_timer_b = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1378 context->env_counter = load_int16(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1379 context->current_op = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1380 if (context->current_op >= NUM_OPERATORS) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1381 context->current_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->current_env_op = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1384 if (context->current_env_op >= NUM_OPERATORS) {
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1385 context->current_env_op = 0;
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1386 }
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1387 context->lfo_counter = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1388 context->csm_keyon = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1389 context->status = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1390 context->selected_reg = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1391 context->selected_part = load_int8(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1392 context->current_cycle = load_int32(buf);
4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1393 context->write_cycle = load_int32(buf);
1902 32a3aa7b4a45 Fix YM2612 busy flag timing Michael Pavone <pavone@retrodev.com> parents: 1880 diff changeset	1394 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	1395 if (buf->size > buf->cur_pos) {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1396 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	1397 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	1398 context->last_status = load_int8(buf);
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1399 } else {
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1400 context->last_status = context->status;
8312e574100a Implement selectable YM2612/YM3834 invalid status port behavior Michael Pavone <pavone@retrodev.com> parents: 1902 diff changeset	1401 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	1402 }
1427 4e5797b3935a WIP - New savestate format Michael Pavone <pavone@retrodev.com> parents: 1356 diff changeset	1403 }
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1404
2255 74112041b2c7 Proper calculation of sample rate for YM2612/PSG oscilloscope view Michael Pavone <pavone@retrodev.com> parents: 2243 diff changeset	1405 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	1406 {
2302 0343f0d5add0 Fix libretro build for real Michael Pavone <pavone@retrodev.com> parents: 2287 diff changeset	1407 #ifndef IS_LIB
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1408 static const char *names[] = {
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1409 "YM2612 #1",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1410 "YM2612 #2",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1411 "YM2612 #3",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1412 "YM2612 #4",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1413 "YM2612 #5",
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1414 "YM2612 #6"
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 context->scope = scope;
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1417 for (int i = 0; i < NUM_CHANNELS; i++)
0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1418 {
2255 74112041b2c7 Proper calculation of sample rate for YM2612/PSG oscilloscope view Michael Pavone <pavone@retrodev.com> parents: 2243 diff changeset	1419 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	1420 }
2302 0343f0d5add0 Fix libretro build for real Michael Pavone <pavone@retrodev.com> parents: 2287 diff changeset	1421 #endif
2243 0d1d5dccdd28 Initial implementation of oscilloscope debug view Michael Pavone <pavone@retrodev.com> parents: 2081 diff changeset	1422 }

Mercurial > repos > blastem

annotate ym2612.c @ 2523:573da2a2e6bb