Mercurial > repos > blastem
annotate ym2612.c @ 821:21a69dfb6ee7
Implement half carry for a couple of the trivial cases
| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Sat, 01 Aug 2015 17:05:51 -0700 |
| parents | 25c9e9d39997 |
| children | 3a18b5f63afc |
| rev | line source |
|---|---|
|
467
140af5509ce7
Added copyright notice to source files and added GPL license text in COPYING
Mike Pavone <pavone@retrodev.com>
parents:
451
diff
changeset
|
1 /* |
|
140af5509ce7
Added copyright notice to source files and added GPL license text in COPYING
Mike Pavone <pavone@retrodev.com>
parents:
451
diff
changeset
|
2 Copyright 2013 Michael Pavone |
|
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
3 This file is part of BlastEm. |
|
467
140af5509ce7
Added copyright notice to source files and added GPL license text in COPYING
Mike Pavone <pavone@retrodev.com>
parents:
451
diff
changeset
|
4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. |
|
140af5509ce7
Added copyright notice to source files and added GPL license text in COPYING
Mike Pavone <pavone@retrodev.com>
parents:
451
diff
changeset
|
5 */ |
|
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
6 #include <string.h> |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
7 #include <math.h> |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
8 #include <stdio.h> |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
9 #include <stdlib.h> |
|
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
10 #include "ym2612.h" |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
11 #include "render.h" |
|
407
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
12 #include "wave.h" |
|
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
483
diff
changeset
|
13 #include "blastem.h" |
|
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
14 |
|
370
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
15 //#define DO_DEBUG_PRINT |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
16 #ifdef DO_DEBUG_PRINT |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
17 #define dfprintf fprintf |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
18 #define dfopen(var, fname, mode) var=fopen(fname, mode) |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
19 #else |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
20 #define dfprintf |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
21 #define dfopen(var, fname, mode) |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
22 #endif |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
23 |
|
535
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
24 #define BUSY_CYCLES_ADDRESS 17 |
|
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
25 #define BUSY_CYCLES_DATA_LOW 83 |
|
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
26 #define BUSY_CYCLES_DATA_HIGH 47 |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
27 #define OP_UPDATE_PERIOD 144 |
|
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
28 |
| 362 | 29 enum { |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
30 REG_LFO = 0x22, |
| 362 | 31 REG_TIMERA_HIGH = 0x24, |
| 32 REG_TIMERA_LOW, | |
| 33 REG_TIMERB, | |
| 34 REG_TIME_CTRL, | |
| 35 REG_KEY_ONOFF, | |
| 36 REG_DAC = 0x2A, | |
| 37 REG_DAC_ENABLE, | |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
38 |
| 362 | 39 REG_DETUNE_MULT = 0x30, |
| 40 REG_TOTAL_LEVEL = 0x40, | |
| 41 REG_ATTACK_KS = 0x50, | |
| 42 REG_DECAY_AM = 0x60, | |
| 43 REG_SUSTAIN_RATE = 0x70, | |
| 44 REG_S_LVL_R_RATE = 0x80, | |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
45 |
| 362 | 46 REG_FNUM_LOW = 0xA0, |
| 47 REG_BLOCK_FNUM_H = 0xA4, | |
| 48 REG_FNUM_LOW_CH3 = 0xA8, | |
| 49 REG_BLOCK_FN_CH3 = 0xAC, | |
| 50 REG_ALG_FEEDBACK = 0xB0, | |
| 51 REG_LR_AMS_PMS = 0xB4 | |
| 52 }; | |
|
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
|
53 |
|
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
|
54 #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
|
55 #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
|
56 #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
|
57 #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
|
58 #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
|
59 #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
|
60 |
|
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
|
61 #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
|
62 #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
|
63 |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
64 enum { |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
65 PHASE_ATTACK, |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
66 PHASE_DECAY, |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
67 PHASE_SUSTAIN, |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
68 PHASE_RELEASE |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
69 }; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
70 |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
71 uint8_t did_tbl_init = 0; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
72 //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
|
73 //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
|
74 //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
|
75 #define SINE_TABLE_SIZE 512 |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
76 uint16_t sine_table[SINE_TABLE_SIZE]; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
77 //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
|
78 //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
|
79 //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
|
80 #define POW_TABLE_SIZE (1 << 13) |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
81 uint16_t pow_table[POW_TABLE_SIZE]; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
82 |
| 362 | 83 uint16_t rate_table_base[] = { |
| 84 //main portion | |
| 85 0,1,0,1,0,1,0,1, | |
| 86 0,1,0,1,1,1,0,1, | |
| 87 0,1,1,1,0,1,1,1, | |
| 88 0,1,1,1,1,1,1,1, | |
| 89 //top end | |
| 90 1,1,1,1,1,1,1,1, | |
| 91 1,1,1,2,1,1,1,2, | |
| 92 1,2,1,2,1,2,1,2, | |
| 93 1,2,2,2,1,2,2,2, | |
| 94 }; | |
| 95 | |
|
365
3ba3b6656fff
Actually save the shifted phase inc after applying the block shift
Mike Pavone <pavone@retrodev.com>
parents:
364
diff
changeset
|
96 uint16_t rate_table[64*8]; |
| 362 | 97 |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
98 uint8_t lfo_timer_values[] = {108, 77, 71, 67, 62, 44, 8, 5}; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
99 uint8_t lfo_pm_base[][8] = { |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
100 {0, 0, 0, 0, 0, 0, 0, 0}, |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
101 {0, 0, 0, 0, 4, 4, 4, 4}, |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
102 {0, 0, 0, 4, 4, 4, 8, 8}, |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
103 {0, 0, 4, 4, 8, 8, 0xc, 0xc}, |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
104 {0, 0, 4, 8, 8, 8, 0xc,0x10}, |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
105 {0, 0, 8, 0xc,0x10,0x10,0x14,0x18}, |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
106 {0, 0,0x10,0x18,0x20,0x20,0x28,0x30}, |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
107 {0, 0,0x20,0x30,0x40,0x40,0x50,0x60} |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
108 }; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
109 int16_t lfo_pm_table[128 * 32 * 8]; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
110 |
|
740
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
111 uint16_t ams_shift[] = {8, 3, 1, 0}; |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
112 |
| 362 | 113 #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
|
114 #define YM_DIVIDER 2 |
| 374 | 115 #define CYCLE_NEVER 0xFFFFFFFF |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
116 |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
117 uint16_t round_fixed_point(double value, int dec_bits) |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
118 { |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
119 return value * (1 << dec_bits) + 0.5; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
120 } |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
121 |
|
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
|
122 FILE * debug_file = NULL; |
|
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
|
123 uint32_t first_key_on=0; |
|
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
|
124 |
|
407
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
125 ym2612_context * log_context = NULL; |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
126 |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
127 void ym_finalize_log() |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
128 { |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
129 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
|
130 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
|
131 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
|
132 } |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
133 } |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
134 } |
|
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
|
135 #define BUFFER_INC_RES 1000000000UL |
|
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
|
136 |
|
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
|
137 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
|
138 { |
|
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
|
139 uint64_t old_inc = context->buffer_inc; |
|
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
|
140 context->buffer_inc = ((BUFFER_INC_RES * (uint64_t)context->sample_rate) / (uint64_t)master_clock) * (uint64_t)context->clock_inc; |
|
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
|
141 } |
|
407
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
142 |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
143 void ym_init(ym2612_context * context, uint32_t sample_rate, uint32_t master_clock, uint32_t clock_div, uint32_t sample_limit, 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
|
144 { |
|
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
|
145 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
|
146 memset(context, 0, sizeof(*context)); |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
147 context->audio_buffer = malloc(sizeof(*context->audio_buffer) * sample_limit*2); |
|
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
148 context->back_buffer = malloc(sizeof(*context->audio_buffer) * sample_limit*2); |
|
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
|
149 context->sample_rate = sample_rate; |
|
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
|
150 context->clock_inc = clock_div * 6; |
|
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
|
151 ym_adjust_master_clock(context, 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
|
152 |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
153 context->sample_limit = sample_limit*2; |
| 374 | 154 context->write_cycle = CYCLE_NEVER; |
| 362 | 155 for (int i = 0; i < NUM_OPERATORS; i++) { |
| 156 context->operators[i].envelope = MAX_ENVELOPE; | |
| 157 context->operators[i].env_phase = PHASE_RELEASE; | |
| 158 } | |
|
369
fc820ab1394b
Fix left/right enable default value
Mike Pavone <pavone@retrodev.com>
parents:
365
diff
changeset
|
159 //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
|
160 for (int i = 0; i < NUM_CHANNELS; i++) { |
|
fc820ab1394b
Fix left/right enable default value
Mike Pavone <pavone@retrodev.com>
parents:
365
diff
changeset
|
161 context->channels[i].lr = 0xC0; |
|
407
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
162 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
|
163 char fname[64]; |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
164 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
|
165 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
|
166 if (!f) { |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
167 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
|
168 continue; |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
169 } |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
170 if (!wave_init(f, sample_rate, 16, 1)) { |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
171 fclose(f); |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
172 context->channels[i].logfile = NULL; |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
173 } |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
174 } |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
175 } |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
176 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
|
177 log_context = context; |
|
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
406
diff
changeset
|
178 atexit(ym_finalize_log); |
|
369
fc820ab1394b
Fix left/right enable default value
Mike Pavone <pavone@retrodev.com>
parents:
365
diff
changeset
|
179 } |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
180 if (!did_tbl_init) { |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
181 //populate sine table |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
182 for (int32_t i = 0; i < 512; i++) { |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
183 double sine = sin( ((double)(i*2+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
|
184 |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
185 //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
|
186 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
|
187 } |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
188 //populate power table |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
189 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
|
190 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
|
191 int32_t tmp = round_fixed_point(linear, 11); |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
192 int32_t shift = (i >> 8) - 2; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
193 if (shift < 0) { |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
194 tmp <<= 0-shift; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
195 } else { |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
196 tmp >>= shift; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
197 } |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
198 pow_table[i] = tmp; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
199 } |
| 362 | 200 //populate envelope generator rate table, from small base table |
| 201 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
|
202 for (int cycle = 0; cycle < 8; cycle++) { |
| 362 | 203 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
|
204 if (rate < 2) { |
| 362 | 205 value = 0; |
|
365
3ba3b6656fff
Actually save the shifted phase inc after applying the block shift
Mike Pavone <pavone@retrodev.com>
parents:
364
diff
changeset
|
206 } else if (rate >= 60) { |
| 362 | 207 value = 8; |
|
365
3ba3b6656fff
Actually save the shifted phase inc after applying the block shift
Mike Pavone <pavone@retrodev.com>
parents:
364
diff
changeset
|
208 } 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
|
209 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
|
210 } else if (rate < 48) { |
| 362 | 211 value = rate_table_base[(rate & 0x3) * 8 + cycle]; |
| 212 } 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
|
213 value = rate_table_base[32 + (rate & 0x3) * 8 + cycle] << ((rate - 48) >> 2); |
| 362 | 214 } |
|
365
3ba3b6656fff
Actually save the shifted phase inc after applying the block shift
Mike Pavone <pavone@retrodev.com>
parents:
364
diff
changeset
|
215 rate_table[rate * 8 + cycle] = value; |
| 362 | 216 } |
| 217 } | |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
218 //populate LFO PM table from small base table |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
219 //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
|
220 for (int freq = 0; freq < 128; freq++) { |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
221 for (int pms = 0; pms < 8; pms++) { |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
222 for (int step = 0; step < 32; step++) { |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
223 int16_t value = 0; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
224 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
|
225 if (freq & bit) { |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
226 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
|
227 } |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
228 } |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
229 if (step & 0x10) { |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
230 value = -value; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
231 } |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
232 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
|
233 } |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
234 } |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
235 } |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
236 } |
|
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
|
237 } |
|
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
|
238 |
|
522
6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
Michael Pavone <pavone@retrodev.com>
parents:
521
diff
changeset
|
239 #define YM_VOLUME_MULTIPLIER 2 |
|
6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
Michael Pavone <pavone@retrodev.com>
parents:
521
diff
changeset
|
240 #define YM_VOLUME_DIVIDER 3 |
|
381
7815ebbbd705
Fix modulation shift value
Mike Pavone <pavone@retrodev.com>
parents:
380
diff
changeset
|
241 #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
|
242 |
| 403 | 243 #define TIMER_A_MAX 1023 |
| 244 #define TIMER_B_MAX (255*16) | |
| 245 | |
|
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
|
246 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
|
247 { |
| 362 | 248 //printf("Running YM2612 from cycle %d to cycle %d\n", context->current_cycle, to_cycle); |
| 249 //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
|
250 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
|
251 //Update timers at beginning of 144 cycle period |
| 403 | 252 if (!context->current_op) { |
| 253 if (context->timer_control & BIT_TIMERA_ENABLE) { | |
| 254 if (context->timer_a != TIMER_A_MAX) { | |
| 255 context->timer_a++; | |
| 256 } else { | |
| 257 if (context->timer_control & BIT_TIMERA_OVEREN) { | |
| 258 context->status |= BIT_STATUS_TIMERA; | |
| 259 } | |
| 260 context->timer_a = context->timer_a_load; | |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
261 } |
|
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
|
262 } |
| 362 | 263 if (context->timer_control & BIT_TIMERB_ENABLE) { |
| 403 | 264 if (context->timer_b != TIMER_B_MAX) { |
| 265 context->timer_b++; | |
| 266 } else { | |
| 267 if (context->timer_control & BIT_TIMERB_OVEREN) { | |
| 268 context->status |= BIT_STATUS_TIMERB; | |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
269 } |
| 403 | 270 context->timer_b = context->timer_b_load; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
271 } |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
272 } |
|
740
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
273 //Update LFO |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
274 if (context->lfo_enable) { |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
275 if (context->lfo_counter) { |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
276 context->lfo_counter--; |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
277 } else { |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
278 context->lfo_counter = lfo_timer_values[context->lfo_freq]; |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
279 context->lfo_am_step += 2; |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
280 context->lfo_am_step &= 0xFE; |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
281 context->lfo_pm_step = context->lfo_am_step / 8; |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
282 } |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
283 } |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
284 } |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
285 //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
|
286 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
|
287 uint32_t env_cyc = context->env_counter; |
|
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
288 uint32_t op = context->current_env_op; |
| 362 | 289 ym_operator * operator = context->operators + op; |
| 290 ym_channel * channel = context->channels + op/4; | |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
291 uint8_t rate; |
| 362 | 292 for(;;) { |
| 293 rate = operator->rates[operator->env_phase]; | |
| 294 if (rate) { | |
| 295 uint8_t ks = channel->keycode >> operator->key_scaling;; | |
| 296 rate = rate*2 + ks; | |
| 297 if (rate > 63) { | |
| 298 rate = 63; | |
| 299 } | |
| 300 } | |
| 301 //Deal with "infinite" rates | |
|
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
|
302 //According to Nemesis this should be handled in key-on instead |
|
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
|
303 if (rate >= 62 && operator->env_phase == PHASE_ATTACK) { |
|
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
|
304 operator->env_phase = PHASE_DECAY; |
|
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
|
305 operator->envelope = 0; |
| 362 | 306 } else { |
| 307 break; | |
| 308 } | |
| 309 } | |
| 310 uint32_t cycle_shift = rate < 0x30 ? ((0x2F - rate) >> 2) : 0; | |
|
370
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
311 if (first_key_on) { |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
312 dfprintf(debug_file, "Operator: %d, env rate: %d (2*%d+%d), env_cyc: %d, cycle_shift: %d, env_cyc & ((1 << cycle_shift) - 1): %d\n", op, rate, operator->rates[operator->env_phase], channel->keycode >> operator->key_scaling,env_cyc, cycle_shift, env_cyc & ((1 << cycle_shift) - 1)); |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
313 } |
| 362 | 314 if (!(env_cyc & ((1 << cycle_shift) - 1))) { |
| 315 uint32_t update_cycle = env_cyc >> cycle_shift & 0x7; | |
| 316 //envelope value is 10-bits, but it will be used as a 4.8 value | |
| 317 uint16_t envelope_inc = rate_table[rate * 8 + update_cycle] << 2; | |
| 318 if (operator->env_phase == PHASE_ATTACK) { | |
| 319 //this can probably be optimized to a single shift rather than a multiply + shift | |
|
370
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
320 if (first_key_on) { |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
321 dfprintf(debug_file, "Changing op %d envelope %d by %d(%d * %d) in attack phase\n", op, operator->envelope, (~operator->envelope * envelope_inc) >> 4, ~operator->envelope, envelope_inc); |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
322 } |
|
513
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
323 uint16_t old_env = operator->envelope; |
| 362 | 324 operator->envelope += (~operator->envelope * envelope_inc) >> 4; |
|
513
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
325 if (operator->envelope > old_env) { |
|
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
326 //Handle overflow |
|
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
327 operator->envelope = 0; |
|
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
328 } |
|
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
|
329 if (!operator->envelope) { |
| 362 | 330 operator->env_phase = PHASE_DECAY; |
| 331 } | |
| 332 } 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
|
333 if (first_key_on) { |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
334 dfprintf(debug_file, "Changing op %d envelope %d by %d in %s phase\n", op, operator->envelope, envelope_inc, |
|
370
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
335 operator->env_phase == PHASE_SUSTAIN ? "sustain" : (operator->env_phase == PHASE_DECAY ? "decay": "release")); |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
336 } |
| 362 | 337 operator->envelope += envelope_inc; |
| 338 //clamp to max attenuation value | |
| 339 if (operator->envelope > MAX_ENVELOPE) { | |
| 340 operator->envelope = MAX_ENVELOPE; | |
| 341 } | |
| 342 if (operator->env_phase == PHASE_DECAY && operator->envelope >= operator->sustain_level) { | |
|
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
|
343 //operator->envelope = operator->sustain_level; |
| 362 | 344 operator->env_phase = PHASE_SUSTAIN; |
| 345 } | |
| 346 } | |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
347 } |
|
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
348 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
|
349 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
|
350 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
|
351 context->env_counter++; |
| 362 | 352 } |
| 353 } | |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
354 |
| 362 | 355 //Update Phase Generator |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
356 uint32_t channel = context->current_op / 4; |
| 362 | 357 if (channel != 5 || !context->dac_enable) { |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
358 uint32_t op = context->current_op; |
| 362 | 359 //printf("updating operator %d of channel %d\n", op, channel); |
| 360 ym_operator * operator = context->operators + op; | |
| 361 ym_channel * chan = context->channels + channel; | |
| 362 //TODO: Modulate phase by LFO if necessary | |
|
396
09328dbe6700
Fix output of algorithm 4 and make some other minor YM2612 core improvements
Mike Pavone <pavone@retrodev.com>
parents:
386
diff
changeset
|
363 uint16_t phase = operator->phase_counter >> 10 & 0x3FF; |
| 362 | 364 operator->phase_counter += operator->phase_inc; |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
365 if (chan->pms) { |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
366 //not entirely sure this will get the precision correct, but I'd like to avoid recalculating phase |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
367 //increment every update when LFO phase modulation is enabled |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
368 int16_t lfo_mod = lfo_pm_table[(chan->fnum & 0x7F0) * 16 + chan->pms + context->lfo_pm_step]; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
369 if (operator->multiple) { |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
370 lfo_mod *= operator->multiple; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
371 } else { |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
372 lfo_mod >>= 1; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
373 } |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
374 operator->phase_counter += lfo_mod; |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
375 } |
|
371
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
376 int16_t mod = 0; |
| 362 | 377 switch (op % 4) |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
378 { |
| 362 | 379 case 0://Operator 1 |
| 377 | 380 if (chan->feedback) { |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
381 mod = (chan->op1_old + operator->output) >> (10-chan->feedback); |
| 377 | 382 } |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
383 break; |
| 362 | 384 case 1://Operator 3 |
| 385 switch(chan->algorithm) | |
| 386 { | |
| 387 case 0: | |
| 388 case 2: | |
| 389 //modulate by operator 2 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
390 mod = context->operators[op+1].output >> YM_MOD_SHIFT; |
| 362 | 391 break; |
| 392 case 1: | |
| 393 //modulate by operator 1+2 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
394 mod = (context->operators[op-1].output + context->operators[op+1].output) >> YM_MOD_SHIFT; |
| 362 | 395 break; |
| 396 case 5: | |
| 397 //modulate by operator 1 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
398 mod = context->operators[op-1].output >> YM_MOD_SHIFT; |
| 362 | 399 } |
| 400 break; | |
| 401 case 2://Operator 2 | |
|
406
b1bc1947d949
Fix modulation condition for operator 2
Mike Pavone <pavone@retrodev.com>
parents:
403
diff
changeset
|
402 if (chan->algorithm != 1 && chan->algorithm != 2 && chan->algorithm != 7) { |
| 362 | 403 //modulate by Operator 1 |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
404 mod = context->operators[op-2].output >> YM_MOD_SHIFT; |
| 362 | 405 } |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
406 break; |
| 362 | 407 case 3://Operator 4 |
| 408 switch(chan->algorithm) | |
| 409 { | |
| 410 case 0: | |
| 411 case 1: | |
| 412 case 4: | |
| 413 //modulate by operator 3 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
414 mod = context->operators[op-2].output >> YM_MOD_SHIFT; |
| 362 | 415 break; |
| 416 case 2: | |
| 417 //modulate by operator 1+3 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
418 mod = (context->operators[op-3].output + context->operators[op-2].output) >> YM_MOD_SHIFT; |
| 362 | 419 break; |
| 420 case 3: | |
| 421 //modulate by operator 2+3 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
422 mod = (context->operators[op-1].output + context->operators[op-2].output) >> YM_MOD_SHIFT; |
| 362 | 423 break; |
| 424 case 5: | |
| 425 //modulate by operator 1 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
426 mod = context->operators[op-3].output >> YM_MOD_SHIFT; |
| 362 | 427 break; |
| 428 } | |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
429 break; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
430 } |
|
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
|
431 uint16_t env = operator->envelope + operator->total_level; |
|
740
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
432 if (operator->am) { |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
433 uint16_t base_am = (context->lfo_am_step & 0x80 ? context->lfo_am_step : ~context->lfo_am_step) & 0x7E; |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
434 env += base_am >> ams_shift[chan->ams]; |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
435 } |
|
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
|
436 if (env > MAX_ENVELOPE) { |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
437 env = MAX_ENVELOPE; |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
438 } |
|
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
|
439 if (first_key_on) { |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
440 dfprintf(debug_file, "op %d, base phase: %d, mod: %d, sine: %d, out: %d\n", op, phase, mod, sine_table[(phase+mod) & 0x1FF], pow_table[sine_table[phase & 0x1FF] + env]); |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
441 } |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
442 //if ((channel != 0 && channel != 4) || chan->algorithm != 5) { |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
443 phase += mod; |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
444 //} |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
445 |
|
371
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
446 int16_t output = pow_table[sine_table[phase & 0x1FF] + env]; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
447 if (phase & 0x200) { |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
448 output = -output; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
449 } |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
450 if (op % 4 == 0) { |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
451 chan->op1_old = operator->output; |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
452 } |
| 362 | 453 operator->output = output; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
454 //Update the channel output if we've updated all operators |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
455 if (op % 4 == 3) { |
| 362 | 456 if (chan->algorithm < 4) { |
| 457 chan->output = operator->output; | |
| 458 } else if(chan->algorithm == 4) { | |
|
396
09328dbe6700
Fix output of algorithm 4 and make some other minor YM2612 core improvements
Mike Pavone <pavone@retrodev.com>
parents:
386
diff
changeset
|
459 chan->output = operator->output + context->operators[channel * 4 + 2].output; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
460 } else { |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
461 output = 0; |
| 362 | 462 for (uint32_t op = ((chan->algorithm == 7) ? 0 : 1) + channel*4; op < (channel+1)*4; op++) { |
| 463 output += context->operators[op].output; | |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
464 } |
| 362 | 465 chan->output = output; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
466 } |
|
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
|
467 if (first_key_on) { |
|
371
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
468 int16_t value = context->channels[channel].output & 0x3FE0; |
|
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
469 if (value & 0x2000) { |
|
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
470 value |= 0xC000; |
|
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
471 } |
|
522
6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
Michael Pavone <pavone@retrodev.com>
parents:
521
diff
changeset
|
472 dfprintf(debug_file, "channel %d output: %d\n", channel, (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER); |
|
370
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
473 } |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
474 } |
| 362 | 475 //puts("operator update done"); |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
476 } |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
477 context->current_op++; |
|
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
|
478 context->buffer_fraction += context->buffer_inc; |
|
396
09328dbe6700
Fix output of algorithm 4 and make some other minor YM2612 core improvements
Mike Pavone <pavone@retrodev.com>
parents:
386
diff
changeset
|
479 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
|
480 context->current_op = 0; |
|
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
481 } |
|
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
|
482 if (context->buffer_fraction > BUFFER_INC_RES) { |
|
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
|
483 context->buffer_fraction -= BUFFER_INC_RES; |
|
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
|
484 context->audio_buffer[context->buffer_pos] = 0; |
|
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
|
485 context->audio_buffer[context->buffer_pos + 1] = 0; |
|
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
|
486 for (int i = 0; i < NUM_CHANNELS; i++) { |
|
521
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
487 int16_t value = context->channels[i].output; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
488 if (value > 0x1FE0) { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
489 value = 0x1FE0; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
490 } else if (value < -0x1FF0) { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
491 value = -0x1FF0; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
492 } else { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
493 value &= 0x3FE0; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
494 if (value & 0x2000) { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
495 value |= 0xC000; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
496 } |
|
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
|
497 } |
|
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
|
498 if (context->channels[i].logfile) { |
|
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
499 fwrite(&value, sizeof(value), 1, context->channels[i].logfile); |
|
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
500 } |
|
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
|
501 if (context->channels[i].lr & 0x80) { |
|
522
6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
Michael Pavone <pavone@retrodev.com>
parents:
521
diff
changeset
|
502 context->audio_buffer[context->buffer_pos] += (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER; |
|
380
1c8d74f2ab0b
Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents:
379
diff
changeset
|
503 } |
|
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
|
504 if (context->channels[i].lr & 0x40) { |
|
522
6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
Michael Pavone <pavone@retrodev.com>
parents:
521
diff
changeset
|
505 context->audio_buffer[context->buffer_pos+1] += (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER; |
|
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
506 } |
|
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
|
507 } |
|
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
|
508 context->buffer_pos += 2; |
|
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
|
509 if (context->buffer_pos == context->sample_limit) { |
|
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
|
510 if (!headless) { |
|
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
|
511 render_wait_ym(context); |
|
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
|
512 } |
|
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
|
513 } |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
514 } |
|
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
|
515 } |
|
535
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
516 if (context->current_cycle >= context->write_cycle + (context->busy_cycles * context->clock_inc / 6)) { |
|
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
517 context->status &= 0x7F; |
| 374 | 518 context->write_cycle = CYCLE_NEVER; |
|
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
519 } |
| 362 | 520 //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
|
521 } |
|
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
|
522 |
|
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
|
523 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
|
524 { |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
525 //printf("address_write_part1: %X\n", address); |
| 362 | 526 context->selected_reg = address; |
| 527 context->selected_part = 0; | |
|
535
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
528 context->write_cycle = context->current_cycle; |
|
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
529 context->busy_cycles = BUSY_CYCLES_ADDRESS; |
|
650
55b550fe8891
Set the busy flag after a YM-2612 address write
Michael Pavone <pavone@retrodev.com>
parents:
535
diff
changeset
|
530 context->status |= 0x80; |
|
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
531 } |
|
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
|
532 |
|
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
|
533 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
|
534 { |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
535 //printf("address_write_part2: %X\n", address); |
| 362 | 536 context->selected_reg = address; |
| 537 context->selected_part = 1; | |
|
535
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
538 context->write_cycle = context->current_cycle; |
|
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
539 context->busy_cycles = BUSY_CYCLES_ADDRESS; |
|
650
55b550fe8891
Set the busy flag after a YM-2612 address write
Michael Pavone <pavone@retrodev.com>
parents:
535
diff
changeset
|
540 context->status |= 0x80; |
| 362 | 541 } |
| 542 | |
| 543 uint8_t fnum_to_keycode[] = { | |
| 544 //F11 = 0 | |
| 545 0,0,0,0,0,0,0,1, | |
| 546 //F11 = 1 | |
| 547 2,3,3,3,3,3,3,3 | |
| 548 }; | |
| 549 | |
| 550 //table courtesy of Nemesis | |
| 551 uint32_t detune_table[][4] = { | |
| 552 {0, 0, 1, 2}, //0 (0x00) | |
| 553 {0, 0, 1, 2}, //1 (0x01) | |
| 554 {0, 0, 1, 2}, //2 (0x02) | |
| 555 {0, 0, 1, 2}, //3 (0x03) | |
| 556 {0, 1, 2, 2}, //4 (0x04) | |
| 557 {0, 1, 2, 3}, //5 (0x05) | |
| 558 {0, 1, 2, 3}, //6 (0x06) | |
| 559 {0, 1, 2, 3}, //7 (0x07) | |
| 560 {0, 1, 2, 4}, //8 (0x08) | |
| 561 {0, 1, 3, 4}, //9 (0x09) | |
| 562 {0, 1, 3, 4}, //10 (0x0A) | |
| 563 {0, 1, 3, 5}, //11 (0x0B) | |
| 564 {0, 2, 4, 5}, //12 (0x0C) | |
| 565 {0, 2, 4, 6}, //13 (0x0D) | |
| 566 {0, 2, 4, 6}, //14 (0x0E) | |
| 567 {0, 2, 5, 7}, //15 (0x0F) | |
| 568 {0, 2, 5, 8}, //16 (0x10) | |
| 569 {0, 3, 6, 8}, //17 (0x11) | |
| 570 {0, 3, 6, 9}, //18 (0x12) | |
| 571 {0, 3, 7,10}, //19 (0x13) | |
| 572 {0, 4, 8,11}, //20 (0x14) | |
| 573 {0, 4, 8,12}, //21 (0x15) | |
| 574 {0, 4, 9,13}, //22 (0x16) | |
| 575 {0, 5,10,14}, //23 (0x17) | |
| 576 {0, 5,11,16}, //24 (0x18) | |
| 577 {0, 6,12,17}, //25 (0x19) | |
| 578 {0, 6,13,19}, //26 (0x1A) | |
| 579 {0, 7,14,20}, //27 (0x1B) | |
| 580 {0, 8,16,22}, //28 (0x1C) | |
| 581 {0, 8,16,22}, //29 (0x1D) | |
| 582 {0, 8,16,22}, //30 (0x1E) | |
| 583 {0, 8,16,22} | |
| 584 }; //31 (0x1F) | |
| 585 | |
| 586 void ym_update_phase_inc(ym2612_context * context, ym_operator * operator, uint32_t op) | |
| 587 { | |
| 588 uint32_t chan_num = op / 4; | |
| 589 //printf("ym_update_phase_inc | channel: %d, op: %d\n", chan_num, op); | |
| 590 //base frequency | |
| 591 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
|
592 uint32_t inc, detune; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
593 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
|
594 //supplemental fnum registers are in a different order than normal slot paramters |
|
8972378e314f
Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
parents:
650
diff
changeset
|
595 int index = (op-2*4) ^ 2; |
|
8972378e314f
Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
parents:
650
diff
changeset
|
596 inc = context->ch3_supp[index].fnum; |
|
8972378e314f
Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
parents:
650
diff
changeset
|
597 if (!context->ch3_supp[index].block) { |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
598 inc >>= 1; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
599 } else { |
|
738
8972378e314f
Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
parents:
650
diff
changeset
|
600 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
|
601 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
602 //detune |
|
738
8972378e314f
Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
parents:
650
diff
changeset
|
603 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
|
604 } else { |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
605 inc = channel->fnum; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
606 if (!channel->block) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
607 inc >>= 1; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
608 } else { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
609 inc <<= (channel->block-1); |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
610 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
611 //detune |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
612 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
|
613 } |
|
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
|
614 if (operator->detune & 0x4) { |
| 362 | 615 inc -= detune; |
| 616 //this can underflow, mask to 17-bit result | |
| 617 inc &= 0x1FFFF; | |
| 618 } else { | |
| 619 inc += detune; | |
| 620 } | |
| 621 //multiple | |
| 622 if (operator->multiple) { | |
| 623 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
|
624 inc &= 0xFFFFF; |
| 362 | 625 } else { |
| 626 //0.5 | |
| 627 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
|
628 } |
|
365
3ba3b6656fff
Actually save the shifted phase inc after applying the block shift
Mike Pavone <pavone@retrodev.com>
parents:
364
diff
changeset
|
629 //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); |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
630 operator->phase_inc = 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
|
631 } |
|
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
|
632 |
|
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
|
633 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
|
634 { |
|
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
635 if (context->selected_reg >= YM_REG_END) { |
| 362 | 636 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
|
637 } |
|
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
638 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
|
639 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
|
640 return; |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
641 } |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
642 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
|
643 } else { |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
644 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
|
645 return; |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
646 } |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
647 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
|
648 } |
|
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
|
649 dfprintf(debug_file, "write of %X to reg %X in part %d\n", value, context->selected_reg, context->selected_part+1); |
| 362 | 650 if (context->selected_reg < 0x30) { |
| 651 //Shared regs | |
| 652 switch (context->selected_reg) | |
| 653 { | |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
654 //TODO: Test reg |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
655 case REG_LFO: |
|
532
666210adf87b
Comment out LFO debug printf
Mike Pavone <pavone@retrodev.com>
parents:
527
diff
changeset
|
656 /*if ((value & 0x8) && !context->lfo_enable) { |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
657 printf("LFO Enabled, Freq: %d\n", value & 0x7); |
|
532
666210adf87b
Comment out LFO debug printf
Mike Pavone <pavone@retrodev.com>
parents:
527
diff
changeset
|
658 }*/ |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
659 context->lfo_enable = value & 0x8; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
660 if (!context->lfo_enable) { |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
661 context->lfo_am_step = context->lfo_pm_step = 0; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
662 } |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
663 context->lfo_freq = value & 0x7; |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
664 |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
665 break; |
| 362 | 666 case REG_TIMERA_HIGH: |
| 667 context->timer_a_load &= 0x3; | |
| 668 context->timer_a_load |= value << 2; | |
| 669 break; | |
| 670 case REG_TIMERA_LOW: | |
| 671 context->timer_a_load &= 0xFFFC; | |
| 672 context->timer_a_load |= value & 0x3; | |
| 673 break; | |
| 674 case REG_TIMERB: | |
| 403 | 675 context->timer_b_load = value * 16; |
| 362 | 676 break; |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
677 case REG_TIME_CTRL: { |
| 403 | 678 if (value & BIT_TIMERA_ENABLE && !(context->timer_control & BIT_TIMERA_ENABLE)) { |
| 679 context->timer_a = context->timer_a_load; | |
| 680 } | |
| 681 if (value & BIT_TIMERB_ENABLE && !(context->timer_control & BIT_TIMERB_ENABLE)) { | |
| 682 context->timer_b = context->timer_b_load; | |
| 683 } | |
| 684 context->timer_control = value & 0xF; | |
| 685 if (value & BIT_TIMERA_RESET) { | |
| 686 context->status &= ~BIT_STATUS_TIMERA; | |
| 687 } | |
| 688 if (value & BIT_TIMERB_RESET) { | |
| 689 context->status &= ~BIT_STATUS_TIMERB; | |
| 690 } | |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
691 uint8_t old_mode = context->ch3_mode; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
692 context->ch3_mode = value & 0xC0; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
693 if (context->ch3_mode != old_mode) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
694 ym_update_phase_inc(context, context->operators + 2*4, 2*4); |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
695 ym_update_phase_inc(context, context->operators + 2*4+1, 2*4+1); |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
696 ym_update_phase_inc(context, context->operators + 2*4+2, 2*4+2); |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
697 } |
| 362 | 698 break; |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
699 } |
| 362 | 700 case REG_KEY_ONOFF: { |
| 701 uint8_t channel = value & 0x7; | |
|
386
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
702 if (channel != 3 && channel != 7) { |
|
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
703 if (channel > 2) { |
|
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
704 channel--; |
|
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
705 } |
| 362 | 706 for (uint8_t op = channel * 4, bit = 0x10; op < (channel + 1) * 4; op++, bit <<= 1) { |
| 707 if (value & bit) { | |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
708 if (context->operators[op].env_phase == PHASE_RELEASE) |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
709 { |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
710 first_key_on = 1; |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
711 //printf("Key On for operator %d in channel %d\n", op, channel); |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
712 context->operators[op].phase_counter = 0; |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
713 context->operators[op].env_phase = PHASE_ATTACK; |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
714 } |
| 362 | 715 } else { |
| 716 //printf("Key Off for operator %d in channel %d\n", op, channel); | |
| 717 context->operators[op].env_phase = PHASE_RELEASE; | |
| 718 } | |
| 719 } | |
| 720 } | |
| 721 break; | |
| 722 } | |
| 723 case REG_DAC: | |
| 724 if (context->dac_enable) { | |
| 725 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
|
726 //printf("DAC Write %X(%d) @ %d\n", value, context->channels[5].output, context->current_cycle); |
| 362 | 727 } |
| 728 break; | |
| 729 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
|
730 //printf("DAC Enable: %X\n", value); |
| 362 | 731 context->dac_enable = value & 0x80; |
| 732 break; | |
| 733 } | |
| 734 } else if (context->selected_reg < 0xA0) { | |
| 735 //part | |
| 736 uint8_t op = context->selected_part ? (NUM_OPERATORS/2) : 0; | |
| 737 //channel in part | |
| 738 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
|
739 op += 4 * (context->selected_reg & 0x3) + ((context->selected_reg & 0xC) / 4); |
| 362 | 740 //printf("write targets operator %d (%d of channel %d)\n", op, op % 4, op / 4); |
| 741 ym_operator * operator = context->operators + op; | |
| 742 switch (context->selected_reg & 0xF0) | |
| 743 { | |
| 744 case REG_DETUNE_MULT: | |
| 745 operator->detune = value >> 4 & 0x7; | |
| 746 operator->multiple = value & 0xF; | |
| 747 ym_update_phase_inc(context, operator, op); | |
| 748 break; | |
| 749 case REG_TOTAL_LEVEL: | |
| 750 operator->total_level = (value & 0x7F) << 5; | |
| 751 break; | |
| 752 case REG_ATTACK_KS: | |
| 376 | 753 operator->key_scaling = 3 - (value >> 6); |
| 362 | 754 operator->rates[PHASE_ATTACK] = value & 0x1F; |
| 755 break; | |
| 756 case REG_DECAY_AM: | |
| 757 //TODO: AM flag for LFO | |
|
739
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
758 operator->am = value & 0x80; |
| 362 | 759 operator->rates[PHASE_DECAY] = value & 0x1F; |
| 760 break; | |
| 761 case REG_SUSTAIN_RATE: | |
| 762 operator->rates[PHASE_SUSTAIN] = value & 0x1F; | |
| 763 break; | |
| 764 case REG_S_LVL_R_RATE: | |
| 765 operator->rates[PHASE_RELEASE] = (value & 0xF) << 1 | 1; | |
|
382
b904859964e5
Fix operator precedence bug with sustain level
Mike Pavone <pavone@retrodev.com>
parents:
381
diff
changeset
|
766 operator->sustain_level = (value & 0xF0) << 4; |
| 362 | 767 break; |
| 768 } | |
| 769 } | |
| 770 } else { | |
| 771 uint8_t channel = context->selected_reg & 0x3; | |
| 772 if (channel != 3) { | |
| 773 if (context->selected_part) { | |
| 774 channel += 3; | |
| 775 } | |
| 776 //printf("write targets channel %d\n", channel); | |
| 777 switch (context->selected_reg & 0xFC) | |
| 778 { | |
| 779 case REG_FNUM_LOW: | |
| 780 context->channels[channel].block = context->channels[channel].block_fnum_latch >> 3 & 0x7; | |
| 781 context->channels[channel].fnum = (context->channels[channel].block_fnum_latch & 0x7) << 8 | value; | |
| 782 context->channels[channel].keycode = context->channels[channel].block << 2 | fnum_to_keycode[context->channels[channel].fnum >> 7]; | |
| 783 ym_update_phase_inc(context, context->operators + channel*4, channel*4); | |
| 784 ym_update_phase_inc(context, context->operators + channel*4+1, channel*4+1); | |
| 785 ym_update_phase_inc(context, context->operators + channel*4+2, channel*4+2); | |
| 786 ym_update_phase_inc(context, context->operators + channel*4+3, channel*4+3); | |
| 787 break; | |
| 788 case REG_BLOCK_FNUM_H:{ | |
| 789 context->channels[channel].block_fnum_latch = value; | |
| 790 break; | |
| 791 } | |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
792 case REG_FNUM_LOW_CH3: |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
793 if (channel < 3) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
794 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
|
795 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
|
796 context->ch3_supp[channel].keycode = context->ch3_supp[channel].block << 2 | fnum_to_keycode[context->ch3_supp[channel].fnum >> 7]; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
797 if (context->ch3_mode) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
798 ym_update_phase_inc(context, context->operators + 2*4 + channel, 2*4); |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
799 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
800 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
801 break; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
802 case REG_BLOCK_FN_CH3: |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
803 if (channel < 3) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
804 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
|
805 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
806 break; |
| 362 | 807 case REG_ALG_FEEDBACK: |
| 808 context->channels[channel].algorithm = value & 0x7; | |
| 809 context->channels[channel].feedback = value >> 3 & 0x7; | |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
810 //printf("Algorithm %d, feedback %d for channel %d\n", value & 0x7, value >> 3 & 0x7, channel); |
| 362 | 811 break; |
| 812 case REG_LR_AMS_PMS: | |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
813 context->channels[channel].pms = (value & 0x7) * 32; |
| 362 | 814 context->channels[channel].ams = value >> 4 & 0x3; |
| 815 context->channels[channel].lr = value & 0xC0; | |
|
369
fc820ab1394b
Fix left/right enable default value
Mike Pavone <pavone@retrodev.com>
parents:
365
diff
changeset
|
816 //printf("Write of %X to LR_AMS_PMS reg for channel %d\n", value, channel); |
| 362 | 817 break; |
| 818 } | |
| 819 } | |
| 820 } | |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
821 |
| 362 | 822 context->write_cycle = context->current_cycle; |
|
535
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
823 context->busy_cycles = context->selected_reg < 0xA0 ? BUSY_CYCLES_DATA_LOW : BUSY_CYCLES_DATA_HIGH; |
| 374 | 824 context->status |= 0x80; |
|
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
825 } |
|
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
|
826 |
|
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
|
827 uint8_t ym_read_status(ym2612_context * context) |
|
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
828 { |
|
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
|
829 return context->status; |
|
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
830 } |
|
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
|
831 |
|
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
|
832 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
|
833 { |
|
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
|
834 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
|
835 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
|
836 "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
|
837 "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
|
838 "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
|
839 "AMS: %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
|
840 "PMS: %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
|
841 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
|
842 chan->lr == 0xC0 ? "LR" : chan->lr == 0x80 ? "L" : chan->lr == 0x40 ? "R" : "", |
|
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
843 chan->ams, chan->pms); |
|
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
|
844 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
|
845 { |
|
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
|
846 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
|
847 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
|
848 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
|
849 } 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
|
850 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
|
851 } |
|
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
|
852 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
|
853 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
|
854 " 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
|
855 " 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
|
856 " 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
|
857 " 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
|
858 " 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
|
859 " 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
|
860 " 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
|
861 " 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
|
862 " 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
|
863 " 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
|
864 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
|
865 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
|
866 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
|
867 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
|
868 } |
|
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
|
869 } |
|
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
|
870 |