Mercurial > repos > blastem
annotate ym2612.c @ 967:1eb616b8cbe9
Fix bug in Z80 rrd implementation. This fixes the annoying high pitched wine in Afterburner II.
| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Wed, 20 Apr 2016 23:19:13 -0700 |
| parents | 5257e85364ed |
| children | 8d032a368dd5 |
| rev | line source |
|---|---|
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1 /* |
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2 Copyright 2013 Michael Pavone |
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3 This file is part of BlastEm. |
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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. |
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5 */ |
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6 #include <string.h> |
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7 #include <math.h> |
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8 #include <stdio.h> |
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9 #include <stdlib.h> |
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10 #include "ym2612.h" |
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11 #include "render.h" |
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12 #include "wave.h" |
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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.
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13 #include "blastem.h" |
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14 |
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15 //#define DO_DEBUG_PRINT |
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16 #ifdef DO_DEBUG_PRINT |
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17 #define dfprintf fprintf |
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18 #define dfopen(var, fname, mode) var=fopen(fname, mode) |
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19 #else |
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20 #define dfprintf |
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21 #define dfopen(var, fname, mode) |
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22 #endif |
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23 |
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24 #define BUSY_CYCLES_ADDRESS 17 |
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25 #define BUSY_CYCLES_DATA_LOW 83 |
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26 #define BUSY_CYCLES_DATA_HIGH 47 |
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27 #define OP_UPDATE_PERIOD 144 |
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28 |
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29 #define BIT_TIMERA_ENABLE 0x1 |
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30 #define BIT_TIMERB_ENABLE 0x2 |
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31 #define BIT_TIMERA_OVEREN 0x4 |
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32 #define BIT_TIMERB_OVEREN 0x8 |
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33 #define BIT_TIMERA_RESET 0x10 |
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34 #define BIT_TIMERB_RESET 0x20 |
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35 |
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36 #define BIT_TIMERA_LOAD 0x40 |
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37 #define BIT_TIMERB_LOAD 0x80 |
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38 |
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39 #define BIT_STATUS_TIMERA 0x1 |
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40 #define BIT_STATUS_TIMERB 0x2 |
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41 |
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42 uint32_t ym_calc_phase_inc(ym2612_context * context, ym_operator * operator, uint32_t op); |
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43 |
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44 enum { |
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45 PHASE_ATTACK, |
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46 PHASE_DECAY, |
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47 PHASE_SUSTAIN, |
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48 PHASE_RELEASE |
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49 }; |
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50 |
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51 uint8_t did_tbl_init = 0; |
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52 //According to Nemesis, real hardware only uses a 256 entry quarter sine table; however, |
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53 //memory is cheap so using a half sine table will probably save some cycles |
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54 //a full sine table would be nice, but negative numbers don't get along with log2 |
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55 #define SINE_TABLE_SIZE 512 |
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56 uint16_t sine_table[SINE_TABLE_SIZE]; |
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57 //Similar deal here with the power table for log -> linear conversion |
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58 //According to Nemesis, real hardware only uses a 256 entry table for the fractional part |
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59 //and uses the whole part as a shift amount. |
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60 #define POW_TABLE_SIZE (1 << 13) |
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61 uint16_t pow_table[POW_TABLE_SIZE]; |
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62 |
| 362 | 63 uint16_t rate_table_base[] = { |
| 64 //main portion | |
| 65 0,1,0,1,0,1,0,1, | |
| 66 0,1,0,1,1,1,0,1, | |
| 67 0,1,1,1,0,1,1,1, | |
| 68 0,1,1,1,1,1,1,1, | |
| 69 //top end | |
| 70 1,1,1,1,1,1,1,1, | |
| 71 1,1,1,2,1,1,1,2, | |
| 72 1,2,1,2,1,2,1,2, | |
| 73 1,2,2,2,1,2,2,2, | |
| 74 }; | |
| 75 | |
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76 uint16_t rate_table[64*8]; |
| 362 | 77 |
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78 uint8_t lfo_timer_values[] = {108, 77, 71, 67, 62, 44, 8, 5}; |
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79 uint8_t lfo_pm_base[][8] = { |
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80 {0, 0, 0, 0, 0, 0, 0, 0}, |
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81 {0, 0, 0, 0, 4, 4, 4, 4}, |
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82 {0, 0, 0, 4, 4, 4, 8, 8}, |
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83 {0, 0, 4, 4, 8, 8, 0xc, 0xc}, |
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84 {0, 0, 4, 8, 8, 8, 0xc,0x10}, |
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85 {0, 0, 8, 0xc,0x10,0x10,0x14,0x18}, |
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86 {0, 0,0x10,0x18,0x20,0x20,0x28,0x30}, |
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87 {0, 0,0x20,0x30,0x40,0x40,0x50,0x60} |
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88 }; |
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89 int16_t lfo_pm_table[128 * 32 * 8]; |
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90 |
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91 int16_t ams_shift[] = {8, 1, -1, -2}; |
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92 |
| 362 | 93 #define MAX_ENVELOPE 0xFFC |
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94 #define YM_DIVIDER 2 |
| 374 | 95 #define CYCLE_NEVER 0xFFFFFFFF |
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96 |
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97 uint16_t round_fixed_point(double value, int dec_bits) |
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98 { |
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99 return value * (1 << dec_bits) + 0.5; |
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100 } |
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101 |
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102 FILE * debug_file = NULL; |
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103 uint32_t first_key_on=0; |
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104 |
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105 ym2612_context * log_context = NULL; |
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106 |
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107 void ym_finalize_log() |
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108 { |
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109 if (!log_context) { |
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110 return; |
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111 } |
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112 for (int i = 0; i < NUM_CHANNELS; i++) { |
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113 if (log_context->channels[i].logfile) { |
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114 wave_finalize(log_context->channels[i].logfile); |
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115 } |
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116 } |
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117 log_context = NULL; |
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118 } |
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119 #define BUFFER_INC_RES 0x40000000UL |
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120 |
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121 void ym_adjust_master_clock(ym2612_context * context, uint32_t master_clock) |
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122 { |
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123 uint64_t old_inc = context->buffer_inc; |
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124 context->buffer_inc = ((BUFFER_INC_RES * (uint64_t)context->sample_rate) / (uint64_t)master_clock) * (uint64_t)context->clock_inc * NUM_OPERATORS; |
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125 } |
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126 |
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127 #ifdef __ANDROID__ |
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128 #define log2(x) (log(x)/log(2)) |
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129 #endif |
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130 |
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131 #define LOWPASS_CUTOFF 3390 |
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132 |
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133 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) |
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134 { |
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135 static uint8_t registered_finalize; |
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136 dfopen(debug_file, "ym_debug.txt", "w"); |
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137 memset(context, 0, sizeof(*context)); |
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138 context->audio_buffer = malloc(sizeof(*context->audio_buffer) * sample_limit*2); |
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139 context->back_buffer = malloc(sizeof(*context->audio_buffer) * sample_limit*2); |
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140 context->sample_rate = sample_rate; |
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141 context->clock_inc = clock_div * 6; |
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142 ym_adjust_master_clock(context, master_clock); |
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143 |
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144 double rc = (1.0 / (double)LOWPASS_CUTOFF) / (2.0 * M_PI); |
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145 double dt = 1.0 / ((double)master_clock / (double)(context->clock_inc * NUM_OPERATORS)); |
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146 double alpha = dt / (dt + rc); |
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147 context->lowpass_alpha = (int32_t)(((double)0x10000) * alpha); |
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148 |
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149 context->sample_limit = sample_limit*2; |
| 374 | 150 context->write_cycle = CYCLE_NEVER; |
| 362 | 151 for (int i = 0; i < NUM_OPERATORS; i++) { |
| 152 context->operators[i].envelope = MAX_ENVELOPE; | |
| 153 context->operators[i].env_phase = PHASE_RELEASE; | |
| 154 } | |
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155 //some games seem to expect that the LR flags start out as 1 |
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156 for (int i = 0; i < NUM_CHANNELS; i++) { |
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157 context->channels[i].lr = 0xC0; |
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158 if (options & YM_OPT_WAVE_LOG) { |
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159 char fname[64]; |
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160 sprintf(fname, "ym_channel_%d.wav", i); |
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161 FILE * f = context->channels[i].logfile = fopen(fname, "wb"); |
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162 if (!f) { |
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163 fprintf(stderr, "Failed to open WAVE log file %s for writing\n", fname); |
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164 continue; |
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165 } |
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166 if (!wave_init(f, sample_rate, 16, 1)) { |
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167 fclose(f); |
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168 context->channels[i].logfile = NULL; |
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169 } |
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170 } |
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171 } |
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172 if (options & YM_OPT_WAVE_LOG) { |
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173 log_context = context; |
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174 if (!registered_finalize) { |
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175 atexit(ym_finalize_log); |
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176 registered_finalize = 1; |
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177 } |
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178 } |
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179 if (!did_tbl_init) { |
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180 //populate sine table |
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181 for (int32_t i = 0; i < 512; i++) { |
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182 double sine = sin( ((double)(i*2+1) / SINE_TABLE_SIZE) * M_PI_2 ); |
|
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183 |
|
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184 //table stores 4.8 fixed pointed representation of the base 2 log |
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185 sine_table[i] = round_fixed_point(-log2(sine), 8); |
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186 } |
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187 //populate power table |
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188 for (int32_t i = 0; i < POW_TABLE_SIZE; i++) { |
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189 double linear = pow(2, -((double)((i & 0xFF)+1) / 256.0)); |
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190 int32_t tmp = round_fixed_point(linear, 11); |
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191 int32_t shift = (i >> 8) - 2; |
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192 if (shift < 0) { |
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193 tmp <<= 0-shift; |
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194 } else { |
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195 tmp >>= shift; |
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196 } |
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197 pow_table[i] = tmp; |
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198 } |
| 362 | 199 //populate envelope generator rate table, from small base table |
| 200 for (int rate = 0; rate < 64; rate++) { | |
|
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201 for (int cycle = 0; cycle < 8; cycle++) { |
| 362 | 202 uint16_t value; |
|
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203 if (rate < 2) { |
| 362 | 204 value = 0; |
|
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205 } else if (rate >= 60) { |
| 362 | 206 value = 8; |
|
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207 } else if (rate < 8) { |
|
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208 value = rate_table_base[((rate & 6) == 6 ? 16 : 0) + cycle]; |
|
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209 } else if (rate < 48) { |
| 362 | 210 value = rate_table_base[(rate & 0x3) * 8 + cycle]; |
| 211 } else { | |
|
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212 value = rate_table_base[32 + (rate & 0x3) * 8 + cycle] << ((rate - 48) >> 2); |
| 362 | 213 } |
|
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214 rate_table[rate * 8 + cycle] = value; |
| 362 | 215 } |
| 216 } | |
|
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217 //populate LFO PM table from small base table |
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218 //seems like there must be a better way to derive this |
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219 for (int freq = 0; freq < 128; freq++) { |
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220 for (int pms = 0; pms < 8; pms++) { |
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221 for (int step = 0; step < 32; step++) { |
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222 int16_t value = 0; |
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223 for (int bit = 0x40, shift = 0; bit > 0; bit >>= 1, shift++) { |
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224 if (freq & bit) { |
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225 value += lfo_pm_base[pms][(step & 0x8) ? 7-step & 7 : step & 7] >> shift; |
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226 } |
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227 } |
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228 if (step & 0x10) { |
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229 value = -value; |
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230 } |
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231 lfo_pm_table[freq * 256 + pms * 32 + step] = value; |
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232 } |
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233 } |
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234 } |
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235 } |
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288
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236 } |
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237 |
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238 void ym_free(ym2612_context *context) |
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239 { |
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240 if (context == log_context) { |
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241 ym_finalize_log(); |
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242 } |
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243 free(context->audio_buffer); |
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244 //TODO: Figure out how to make this 100% safe |
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245 //audio thread could still be using this |
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246 free(context->back_buffer); |
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247 free(context); |
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248 } |
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249 |
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250 #define YM_VOLUME_MULTIPLIER 2 |
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251 #define YM_VOLUME_DIVIDER 3 |
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252 #define YM_MOD_SHIFT 1 |
|
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253 |
| 403 | 254 #define TIMER_A_MAX 1023 |
|
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255 #define TIMER_B_MAX 255 |
| 403 | 256 |
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257 void ym_run(ym2612_context * context, uint32_t to_cycle) |
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258 { |
| 362 | 259 //printf("Running YM2612 from cycle %d to cycle %d\n", context->current_cycle, to_cycle); |
| 260 //TODO: Fix channel update order OR remap channels in register write | |
|
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261 for (; context->current_cycle < to_cycle; context->current_cycle += context->clock_inc) { |
|
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262 //Update timers at beginning of 144 cycle period |
| 403 | 263 if (!context->current_op) { |
| 264 if (context->timer_control & BIT_TIMERA_ENABLE) { | |
| 265 if (context->timer_a != TIMER_A_MAX) { | |
| 266 context->timer_a++; | |
| 267 } else { | |
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268 if (context->timer_control & BIT_TIMERA_LOAD) { |
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269 context->timer_control &= ~BIT_TIMERA_LOAD; |
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270 } else if (context->timer_control & BIT_TIMERA_OVEREN) { |
| 403 | 271 context->status |= BIT_STATUS_TIMERA; |
| 272 } | |
| 273 context->timer_a = context->timer_a_load; | |
|
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274 } |
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275 } |
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276 if (!context->sub_timer_b) { |
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277 if (context->timer_control & BIT_TIMERB_ENABLE) { |
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278 if (context->timer_b != TIMER_B_MAX) { |
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279 context->timer_b++; |
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280 } else { |
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281 if (context->timer_control & BIT_TIMERB_LOAD) { |
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282 context->timer_control &= ~BIT_TIMERB_LOAD; |
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283 } else if (context->timer_control & BIT_TIMERB_OVEREN) { |
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284 context->status |= BIT_STATUS_TIMERB; |
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285 } |
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286 context->timer_b = context->timer_b_load; |
|
359
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287 } |
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288 } |
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289 } |
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290 context->sub_timer_b += 0x10; |
|
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291 //Update LFO |
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292 if (context->lfo_enable) { |
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293 if (context->lfo_counter) { |
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294 context->lfo_counter--; |
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295 } else { |
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296 context->lfo_counter = lfo_timer_values[context->lfo_freq]; |
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297 context->lfo_am_step += 2; |
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298 context->lfo_am_step &= 0xFE; |
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299 context->lfo_pm_step = context->lfo_am_step / 8; |
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300 } |
|
411
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301 } |
|
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302 } |
|
359
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303 //Update Envelope Generator |
|
364
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diff
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304 if (!(context->current_op % 3)) { |
|
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305 uint32_t env_cyc = context->env_counter; |
|
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306 uint32_t op = context->current_env_op; |
| 362 | 307 ym_operator * operator = context->operators + op; |
| 308 ym_channel * channel = context->channels + op/4; | |
|
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309 uint8_t rate; |
|
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310 if (operator->env_phase == PHASE_DECAY && operator->envelope >= operator->sustain_level) { |
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311 //operator->envelope = operator->sustain_level; |
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312 operator->env_phase = PHASE_SUSTAIN; |
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313 } |
| 362 | 314 for(;;) { |
| 315 rate = operator->rates[operator->env_phase]; | |
| 316 if (rate) { | |
| 317 uint8_t ks = channel->keycode >> operator->key_scaling;; | |
| 318 rate = rate*2 + ks; | |
| 319 if (rate > 63) { | |
| 320 rate = 63; | |
| 321 } | |
| 322 } | |
| 323 //Deal with "infinite" rates | |
|
370
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324 //According to Nemesis this should be handled in key-on instead |
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325 if (rate >= 62 && operator->env_phase == PHASE_ATTACK) { |
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326 operator->env_phase = PHASE_DECAY; |
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327 operator->envelope = 0; |
| 362 | 328 } else { |
| 329 break; | |
| 330 } | |
| 331 } | |
| 332 uint32_t cycle_shift = rate < 0x30 ? ((0x2F - rate) >> 2) : 0; | |
|
370
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333 if (first_key_on) { |
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334 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)); |
|
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335 } |
| 362 | 336 if (!(env_cyc & ((1 << cycle_shift) - 1))) { |
| 337 uint32_t update_cycle = env_cyc >> cycle_shift & 0x7; | |
|
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338 uint16_t envelope_inc = rate_table[rate * 8 + update_cycle]; |
| 362 | 339 if (operator->env_phase == PHASE_ATTACK) { |
| 340 //this can probably be optimized to a single shift rather than a multiply + shift | |
|
370
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341 if (first_key_on) { |
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342 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); |
|
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343 } |
|
513
24ebabd89162
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344 uint16_t old_env = operator->envelope; |
|
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345 operator->envelope += ((~operator->envelope * envelope_inc) >> 4) & 0xFFFFFFFC; |
|
513
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diff
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346 if (operator->envelope > old_env) { |
|
24ebabd89162
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347 //Handle overflow |
|
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diff
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348 operator->envelope = 0; |
|
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349 } |
|
370
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350 if (!operator->envelope) { |
| 362 | 351 operator->env_phase = PHASE_DECAY; |
| 352 } | |
| 353 } else { | |
|
370
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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.
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354 if (first_key_on) { |
|
448
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Fix handling of key on in YM2612 core
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diff
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|
355 dfprintf(debug_file, "Changing op %d envelope %d by %d in %s phase\n", op, operator->envelope, envelope_inc, |
|
370
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356 operator->env_phase == PHASE_SUSTAIN ? "sustain" : (operator->env_phase == PHASE_DECAY ? "decay": "release")); |
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357 } |
|
852
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Fix some bugs in the attack phase and sustain level in the envelope generator
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|
358 //envelope value is 10-bits, but it will be used as a 4.8 value |
|
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parents:
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diff
changeset
|
359 operator->envelope += envelope_inc << 2; |
| 362 | 360 //clamp to max attenuation value |
| 361 if (operator->envelope > MAX_ENVELOPE) { | |
| 362 operator->envelope = MAX_ENVELOPE; | |
| 363 } | |
| 364 } | |
|
364
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Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
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|
365 } |
|
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
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|
366 context->current_env_op++; |
|
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parents:
362
diff
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|
367 if (context->current_env_op == NUM_OPERATORS) { |
|
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parents:
362
diff
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|
368 context->current_env_op = 0; |
|
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Incredibly broken YM2612 support plus a fix to Z80 bus request
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362
diff
changeset
|
369 context->env_counter++; |
| 362 | 370 } |
| 371 } | |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
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parents:
424
diff
changeset
|
372 |
| 362 | 373 //Update Phase Generator |
|
364
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Incredibly broken YM2612 support plus a fix to Z80 bus request
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parents:
362
diff
changeset
|
374 uint32_t channel = context->current_op / 4; |
| 362 | 375 if (channel != 5 || !context->dac_enable) { |
|
364
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Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
376 uint32_t op = context->current_op; |
| 362 | 377 //printf("updating operator %d of channel %d\n", op, channel); |
| 378 ym_operator * operator = context->operators + op; | |
| 379 ym_channel * chan = context->channels + channel; | |
|
396
09328dbe6700
Fix output of algorithm 4 and make some other minor YM2612 core improvements
Mike Pavone <pavone@retrodev.com>
parents:
386
diff
changeset
|
380 uint16_t phase = operator->phase_counter >> 10 & 0x3FF; |
|
935
01fb50390b27
Remove phase increment caching. Fix LFO phase modulation calculation
Michael Pavone <pavone@retrodev.com>
parents:
930
diff
changeset
|
381 operator->phase_counter += ym_calc_phase_inc(context, operator, context->current_op); |
|
371
0f8a759f1ff4
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Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
382 int16_t mod = 0; |
| 362 | 383 switch (op % 4) |
|
359
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diff
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|
384 { |
| 362 | 385 case 0://Operator 1 |
| 377 | 386 if (chan->feedback) { |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
387 mod = (chan->op1_old + operator->output) >> (10-chan->feedback); |
| 377 | 388 } |
|
359
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diff
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389 break; |
| 362 | 390 case 1://Operator 3 |
| 391 switch(chan->algorithm) | |
| 392 { | |
| 393 case 0: | |
| 394 case 2: | |
| 395 //modulate by operator 2 | |
|
379
3218e2f8d685
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parents:
378
diff
changeset
|
396 mod = context->operators[op+1].output >> YM_MOD_SHIFT; |
| 362 | 397 break; |
| 398 case 1: | |
| 399 //modulate by operator 1+2 | |
|
379
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378
diff
changeset
|
400 mod = (context->operators[op-1].output + context->operators[op+1].output) >> YM_MOD_SHIFT; |
| 362 | 401 break; |
| 402 case 5: | |
| 403 //modulate by operator 1 | |
|
379
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parents:
378
diff
changeset
|
404 mod = context->operators[op-1].output >> YM_MOD_SHIFT; |
| 362 | 405 } |
| 406 break; | |
| 407 case 2://Operator 2 | |
|
406
b1bc1947d949
Fix modulation condition for operator 2
Mike Pavone <pavone@retrodev.com>
parents:
403
diff
changeset
|
408 if (chan->algorithm != 1 && chan->algorithm != 2 && chan->algorithm != 7) { |
| 362 | 409 //modulate by Operator 1 |
|
379
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Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
410 mod = context->operators[op-2].output >> YM_MOD_SHIFT; |
| 362 | 411 } |
|
359
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diff
changeset
|
412 break; |
| 362 | 413 case 3://Operator 4 |
| 414 switch(chan->algorithm) | |
| 415 { | |
| 416 case 0: | |
| 417 case 1: | |
| 418 case 4: | |
| 419 //modulate by operator 3 | |
|
379
3218e2f8d685
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Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
420 mod = context->operators[op-2].output >> YM_MOD_SHIFT; |
| 362 | 421 break; |
| 422 case 2: | |
| 423 //modulate by operator 1+3 | |
|
379
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Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
424 mod = (context->operators[op-3].output + context->operators[op-2].output) >> YM_MOD_SHIFT; |
| 362 | 425 break; |
| 426 case 3: | |
| 427 //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
|
428 mod = (context->operators[op-1].output + context->operators[op-2].output) >> YM_MOD_SHIFT; |
| 362 | 429 break; |
| 430 case 5: | |
| 431 //modulate by operator 1 | |
|
379
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Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
432 mod = context->operators[op-3].output >> YM_MOD_SHIFT; |
| 362 | 433 break; |
| 434 } | |
|
359
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288
diff
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|
435 break; |
|
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parents:
288
diff
changeset
|
436 } |
|
370
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
437 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
|
438 if (operator->am) { |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
439 uint16_t base_am = (context->lfo_am_step & 0x80 ? context->lfo_am_step : ~context->lfo_am_step) & 0x7E; |
|
930
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
440 if (ams_shift[chan->ams] >= 0) { |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
441 env += base_am >> ams_shift[chan->ams]; |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
442 } else { |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
443 env += base_am << (-ams_shift[chan->ams]); |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
444 } |
|
740
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
445 } |
|
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
|
446 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
|
447 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
|
448 } |
|
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
|
449 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
|
450 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
|
451 } |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
452 //if ((channel != 0 && channel != 4) || chan->algorithm != 5) { |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
453 phase += mod; |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
454 //} |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
455 |
|
371
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
456 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
|
457 if (phase & 0x200) { |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
458 output = -output; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
459 } |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
460 if (op % 4 == 0) { |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
461 chan->op1_old = operator->output; |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
462 } |
| 362 | 463 operator->output = output; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
464 //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
|
465 if (op % 4 == 3) { |
| 362 | 466 if (chan->algorithm < 4) { |
| 467 chan->output = operator->output; | |
| 468 } 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
|
469 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
|
470 } else { |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
471 output = 0; |
| 362 | 472 for (uint32_t op = ((chan->algorithm == 7) ? 0 : 1) + channel*4; op < (channel+1)*4; op++) { |
| 473 output += context->operators[op].output; | |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
474 } |
| 362 | 475 chan->output = output; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
476 } |
|
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
|
477 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
|
478 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
|
479 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
|
480 value |= 0xC000; |
|
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
481 } |
|
522
6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
Michael Pavone <pavone@retrodev.com>
parents:
521
diff
changeset
|
482 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
|
483 } |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
484 } |
| 362 | 485 //puts("operator update done"); |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
486 } |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
487 context->current_op++; |
|
396
09328dbe6700
Fix output of algorithm 4 and make some other minor YM2612 core improvements
Mike Pavone <pavone@retrodev.com>
parents:
386
diff
changeset
|
488 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
|
489 context->current_op = 0; |
|
965
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
490 |
|
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
491 context->buffer_fraction += context->buffer_inc; |
|
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
492 int16_t left = 0, right = 0; |
|
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
493 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
|
494 int16_t value = context->channels[i].output; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
495 if (value > 0x1FE0) { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
496 value = 0x1FE0; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
497 } else if (value < -0x1FF0) { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
498 value = -0x1FF0; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
499 } else { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
500 value &= 0x3FE0; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
501 if (value & 0x2000) { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
502 value |= 0xC000; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
503 } |
|
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
|
504 } |
|
965
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
505 if (context->channels[i].logfile && context->buffer_fraction > BUFFER_INC_RES) { |
|
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 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
|
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 if (context->channels[i].lr & 0x80) { |
|
965
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
509 left += (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER; |
|
380
1c8d74f2ab0b
Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents:
379
diff
changeset
|
510 } |
|
483
3e1573fa22cf
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parents:
467
diff
changeset
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511 if (context->channels[i].lr & 0x40) { |
|
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diff
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512 right += (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER; |
|
483
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Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
513 } |
|
3e1573fa22cf
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diff
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|
514 } |
|
965
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|
515 int32_t tmp = left * context->lowpass_alpha + context->last_left * (0x10000 - context->lowpass_alpha); |
|
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516 left = tmp >> 16; |
|
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|
517 tmp = right * context->lowpass_alpha + context->last_right * (0x10000 - context->lowpass_alpha); |
|
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|
518 right = tmp >> 16; |
|
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|
519 if (context->buffer_fraction > BUFFER_INC_RES) { |
|
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|
520 context->buffer_fraction -= BUFFER_INC_RES; |
|
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|
521 |
|
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|
522 int64_t tmp = context->last_left * ((context->buffer_fraction << 16) / context->buffer_inc); |
|
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523 tmp += left * (0x10000 - ((context->buffer_fraction << 16) / context->buffer_inc)); |
|
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524 context->audio_buffer[context->buffer_pos] = tmp >> 16; |
|
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525 |
|
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526 tmp = context->last_right * ((context->buffer_fraction << 16) / context->buffer_inc); |
|
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527 tmp += right * (0x10000 - ((context->buffer_fraction << 16) / context->buffer_inc)); |
|
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528 context->audio_buffer[context->buffer_pos+1] = tmp >> 16; |
|
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|
529 |
|
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530 context->buffer_pos += 2; |
|
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531 if (context->buffer_pos == context->sample_limit) { |
|
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532 if (!headless) { |
|
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533 render_wait_ym(context); |
|
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534 } |
|
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>
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diff
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|
535 } |
|
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>
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536 } |
|
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537 context->last_left = left; |
|
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538 context->last_right = right; |
|
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Mike Pavone <pavone@retrodev.com>
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362
diff
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|
539 } |
|
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540 |
|
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541 } |
|
535
aaa77e351c24
Better emulation of the YM-2612 busy flag
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diff
changeset
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542 if (context->current_cycle >= context->write_cycle + (context->busy_cycles * context->clock_inc / 6)) { |
|
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|
543 context->status &= 0x7F; |
| 374 | 544 context->write_cycle = CYCLE_NEVER; |
|
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545 } |
| 362 | 546 //printf("Done running YM2612 at cycle %d\n", context->current_cycle, to_cycle); |
|
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547 } |
|
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diff
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|
548 |
|
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|
549 void ym_address_write_part1(ym2612_context * context, uint8_t address) |
|
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550 { |
|
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diff
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|
551 //printf("address_write_part1: %X\n", address); |
| 362 | 552 context->selected_reg = address; |
| 553 context->selected_part = 0; | |
|
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Mike Pavone <pavone@retrodev.com>
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diff
changeset
|
554 context->write_cycle = context->current_cycle; |
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diff
changeset
|
555 context->busy_cycles = BUSY_CYCLES_ADDRESS; |
|
650
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diff
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|
556 context->status |= 0x80; |
|
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|
557 } |
|
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|
558 |
|
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|
559 void ym_address_write_part2(ym2612_context * context, uint8_t address) |
|
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parents:
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|
560 { |
|
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Mike Pavone <pavone@retrodev.com>
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diff
changeset
|
561 //printf("address_write_part2: %X\n", address); |
| 362 | 562 context->selected_reg = address; |
| 563 context->selected_part = 1; | |
|
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Mike Pavone <pavone@retrodev.com>
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diff
changeset
|
564 context->write_cycle = context->current_cycle; |
|
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532
diff
changeset
|
565 context->busy_cycles = BUSY_CYCLES_ADDRESS; |
|
650
55b550fe8891
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parents:
535
diff
changeset
|
566 context->status |= 0x80; |
| 362 | 567 } |
| 568 | |
| 569 uint8_t fnum_to_keycode[] = { | |
| 570 //F11 = 0 | |
| 571 0,0,0,0,0,0,0,1, | |
| 572 //F11 = 1 | |
| 573 2,3,3,3,3,3,3,3 | |
| 574 }; | |
| 575 | |
| 576 //table courtesy of Nemesis | |
| 577 uint32_t detune_table[][4] = { | |
| 578 {0, 0, 1, 2}, //0 (0x00) | |
| 579 {0, 0, 1, 2}, //1 (0x01) | |
| 580 {0, 0, 1, 2}, //2 (0x02) | |
| 581 {0, 0, 1, 2}, //3 (0x03) | |
| 582 {0, 1, 2, 2}, //4 (0x04) | |
| 583 {0, 1, 2, 3}, //5 (0x05) | |
| 584 {0, 1, 2, 3}, //6 (0x06) | |
| 585 {0, 1, 2, 3}, //7 (0x07) | |
| 586 {0, 1, 2, 4}, //8 (0x08) | |
| 587 {0, 1, 3, 4}, //9 (0x09) | |
| 588 {0, 1, 3, 4}, //10 (0x0A) | |
| 589 {0, 1, 3, 5}, //11 (0x0B) | |
| 590 {0, 2, 4, 5}, //12 (0x0C) | |
| 591 {0, 2, 4, 6}, //13 (0x0D) | |
| 592 {0, 2, 4, 6}, //14 (0x0E) | |
| 593 {0, 2, 5, 7}, //15 (0x0F) | |
| 594 {0, 2, 5, 8}, //16 (0x10) | |
| 595 {0, 3, 6, 8}, //17 (0x11) | |
| 596 {0, 3, 6, 9}, //18 (0x12) | |
| 597 {0, 3, 7,10}, //19 (0x13) | |
| 598 {0, 4, 8,11}, //20 (0x14) | |
| 599 {0, 4, 8,12}, //21 (0x15) | |
| 600 {0, 4, 9,13}, //22 (0x16) | |
| 601 {0, 5,10,14}, //23 (0x17) | |
| 602 {0, 5,11,16}, //24 (0x18) | |
| 603 {0, 6,12,17}, //25 (0x19) | |
| 604 {0, 6,13,19}, //26 (0x1A) | |
| 605 {0, 7,14,20}, //27 (0x1B) | |
| 606 {0, 8,16,22}, //28 (0x1C) | |
| 607 {0, 8,16,22}, //29 (0x1D) | |
| 608 {0, 8,16,22}, //30 (0x1E) | |
| 609 {0, 8,16,22} | |
| 610 }; //31 (0x1F) | |
| 611 | |
|
935
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Michael Pavone <pavone@retrodev.com>
parents:
930
diff
changeset
|
612 uint32_t ym_calc_phase_inc(ym2612_context * context, ym_operator * operator, uint32_t op) |
| 362 | 613 { |
| 614 uint32_t chan_num = op / 4; | |
| 615 //printf("ym_update_phase_inc | channel: %d, op: %d\n", chan_num, op); | |
| 616 //base frequency | |
| 617 ym_channel * channel = context->channels + chan_num; | |
|
383
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Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
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|
618 uint32_t inc, detune; |
|
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Initial implementation of channel 3 special mode
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parents:
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diff
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|
619 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
|
620 //supplemental fnum registers are in a different order than normal slot paramters |
|
936
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Fix register to operator mapping for channel 3 special mode and actually get it right this time
Michael Pavone <pavone@retrodev.com>
parents:
935
diff
changeset
|
621 int index = op-2*4; |
|
f1a8124ad881
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parents:
935
diff
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|
622 if (index < 2) { |
|
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parents:
935
diff
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|
623 index ^= 1; |
|
f1a8124ad881
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parents:
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diff
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|
624 } |
|
738
8972378e314f
Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
parents:
650
diff
changeset
|
625 inc = context->ch3_supp[index].fnum; |
|
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parents:
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diff
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|
626 if (channel->pms) { |
|
01fb50390b27
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parents:
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diff
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|
627 inc = inc * 2 + lfo_pm_table[(inc & 0x7F0) * 16 + channel->pms + context->lfo_pm_step]; |
|
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Remove phase increment caching. Fix LFO phase modulation calculation
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parents:
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diff
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|
628 } |
|
738
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Fix register to operator mapping for channel 3 special mode
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parents:
650
diff
changeset
|
629 if (!context->ch3_supp[index].block) { |
|
383
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diff
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|
630 inc >>= 1; |
|
72933100c55c
Initial implementation of channel 3 special mode
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parents:
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diff
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|
631 } else { |
|
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8972378e314f
Fix register to operator mapping for channel 3 special mode
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parents:
650
diff
changeset
|
632 inc <<= (context->ch3_supp[index].block-1); |
|
383
72933100c55c
Initial implementation of channel 3 special mode
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diff
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|
633 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
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382
diff
changeset
|
634 //detune |
|
738
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diff
changeset
|
635 detune = detune_table[context->ch3_supp[index].keycode][operator->detune & 0x3]; |
|
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diff
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|
636 } else { |
|
383
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Initial implementation of channel 3 special mode
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diff
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|
637 inc = channel->fnum; |
|
935
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diff
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|
638 if (channel->pms) { |
|
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parents:
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diff
changeset
|
639 inc = inc * 2 + lfo_pm_table[(inc & 0x7F0) * 16 + channel->pms + context->lfo_pm_step]; |
|
01fb50390b27
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diff
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|
640 } |
|
383
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Initial implementation of channel 3 special mode
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parents:
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diff
changeset
|
641 if (!channel->block) { |
|
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diff
changeset
|
642 inc >>= 1; |
|
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Initial implementation of channel 3 special mode
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diff
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|
643 } else { |
|
72933100c55c
Initial implementation of channel 3 special mode
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diff
changeset
|
644 inc <<= (channel->block-1); |
|
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parents:
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diff
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|
645 } |
|
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Initial implementation of channel 3 special mode
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diff
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|
646 //detune |
|
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diff
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|
647 detune = detune_table[channel->keycode][operator->detune & 0x3]; |
|
448
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Fix handling of key on in YM2612 core
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424
diff
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|
648 } |
|
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|
649 if (channel->pms) { |
|
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|
650 inc >>= 1; |
|
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diff
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|
651 } |
|
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
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parents:
738
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changeset
|
652 if (operator->detune & 0x4) { |
| 362 | 653 inc -= detune; |
| 654 //this can underflow, mask to 17-bit result | |
| 655 inc &= 0x1FFFF; | |
| 656 } else { | |
| 657 inc += detune; | |
| 658 } | |
| 659 //multiple | |
| 660 if (operator->multiple) { | |
| 661 inc *= operator->multiple; | |
|
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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
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|
662 inc &= 0xFFFFF; |
| 362 | 663 } else { |
| 664 //0.5 | |
| 665 inc >>= 1; | |
|
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|
666 } |
|
365
3ba3b6656fff
Actually save the shifted phase inc after applying the block shift
Mike Pavone <pavone@retrodev.com>
parents:
364
diff
changeset
|
667 //printf("phase_inc for operator %d: %d, block: %d, fnum: %d, detune: %d, multiple: %d\n", op, inc, channel->block, channel->fnum, detune, operator->multiple); |
|
935
01fb50390b27
Remove phase increment caching. Fix LFO phase modulation calculation
Michael Pavone <pavone@retrodev.com>
parents:
930
diff
changeset
|
668 return inc; |
|
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
669 } |
|
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
|
670 |
|
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
|
671 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
|
672 { |
|
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
673 if (context->selected_reg >= YM_REG_END) { |
| 362 | 674 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
|
675 } |
|
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
676 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
|
677 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
|
678 return; |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
679 } |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
680 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
|
681 } else { |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
682 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
|
683 return; |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
684 } |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
685 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
|
686 } |
|
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
|
687 dfprintf(debug_file, "write of %X to reg %X in part %d\n", value, context->selected_reg, context->selected_part+1); |
| 362 | 688 if (context->selected_reg < 0x30) { |
| 689 //Shared regs | |
| 690 switch (context->selected_reg) | |
| 691 { | |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
692 //TODO: Test reg |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
693 case REG_LFO: |
|
532
666210adf87b
Comment out LFO debug printf
Mike Pavone <pavone@retrodev.com>
parents:
527
diff
changeset
|
694 /*if ((value & 0x8) && !context->lfo_enable) { |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
695 printf("LFO Enabled, Freq: %d\n", value & 0x7); |
|
532
666210adf87b
Comment out LFO debug printf
Mike Pavone <pavone@retrodev.com>
parents:
527
diff
changeset
|
696 }*/ |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
697 context->lfo_enable = value & 0x8; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
698 if (!context->lfo_enable) { |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
699 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
|
700 } |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
701 context->lfo_freq = value & 0x7; |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
702 |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
703 break; |
| 362 | 704 case REG_TIMERA_HIGH: |
| 705 context->timer_a_load &= 0x3; | |
| 706 context->timer_a_load |= value << 2; | |
| 707 break; | |
| 708 case REG_TIMERA_LOW: | |
| 709 context->timer_a_load &= 0xFFFC; | |
| 710 context->timer_a_load |= value & 0x3; | |
| 711 break; | |
| 712 case REG_TIMERB: | |
|
845
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
diff
changeset
|
713 context->timer_b_load = value; |
| 362 | 714 break; |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
715 case REG_TIME_CTRL: { |
| 403 | 716 if (value & BIT_TIMERA_ENABLE && !(context->timer_control & BIT_TIMERA_ENABLE)) { |
|
845
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
diff
changeset
|
717 context->timer_a = TIMER_A_MAX; |
|
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
diff
changeset
|
718 context->timer_control |= BIT_TIMERA_LOAD; |
| 403 | 719 } |
| 720 if (value & BIT_TIMERB_ENABLE && !(context->timer_control & BIT_TIMERB_ENABLE)) { | |
|
845
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
diff
changeset
|
721 context->timer_b = TIMER_B_MAX; |
|
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
diff
changeset
|
722 context->timer_control |= BIT_TIMERB_LOAD; |
| 403 | 723 } |
|
845
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
diff
changeset
|
724 context->timer_control &= (BIT_TIMERA_LOAD | BIT_TIMERB_LOAD); |
|
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
diff
changeset
|
725 context->timer_control |= value & 0xF; |
| 403 | 726 if (value & BIT_TIMERA_RESET) { |
| 727 context->status &= ~BIT_STATUS_TIMERA; | |
| 728 } | |
| 729 if (value & BIT_TIMERB_RESET) { | |
| 730 context->status &= ~BIT_STATUS_TIMERB; | |
| 731 } | |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
732 context->ch3_mode = value & 0xC0; |
| 362 | 733 break; |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
734 } |
| 362 | 735 case REG_KEY_ONOFF: { |
| 736 uint8_t channel = value & 0x7; | |
|
386
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
737 if (channel != 3 && channel != 7) { |
|
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
738 if (channel > 2) { |
|
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
739 channel--; |
|
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
740 } |
|
851
b10cf2c921ad
Fix mapping of key on/off reg bits to operators
Michael Pavone <pavone@retrodev.com>
parents:
848
diff
changeset
|
741 uint8_t bits[] = {0x10, 0x40, 0x20, 0x80}; |
|
b10cf2c921ad
Fix mapping of key on/off reg bits to operators
Michael Pavone <pavone@retrodev.com>
parents:
848
diff
changeset
|
742 for (uint8_t op = channel * 4, bit = 0; op < (channel + 1) * 4; op++, bit++) { |
|
b10cf2c921ad
Fix mapping of key on/off reg bits to operators
Michael Pavone <pavone@retrodev.com>
parents:
848
diff
changeset
|
743 if (value & bits[bit]) { |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
744 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
|
745 { |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
746 first_key_on = 1; |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
747 //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
|
748 context->operators[op].phase_counter = 0; |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
749 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
|
750 } |
| 362 | 751 } else { |
| 752 //printf("Key Off for operator %d in channel %d\n", op, channel); | |
| 753 context->operators[op].env_phase = PHASE_RELEASE; | |
| 754 } | |
| 755 } | |
| 756 } | |
| 757 break; | |
| 758 } | |
| 759 case REG_DAC: | |
| 760 if (context->dac_enable) { | |
| 761 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
|
762 //printf("DAC Write %X(%d) @ %d\n", value, context->channels[5].output, context->current_cycle); |
| 362 | 763 } |
| 764 break; | |
| 765 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
|
766 //printf("DAC Enable: %X\n", value); |
| 362 | 767 context->dac_enable = value & 0x80; |
| 768 break; | |
| 769 } | |
| 770 } else if (context->selected_reg < 0xA0) { | |
| 771 //part | |
| 772 uint8_t op = context->selected_part ? (NUM_OPERATORS/2) : 0; | |
| 773 //channel in part | |
| 774 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
|
775 op += 4 * (context->selected_reg & 0x3) + ((context->selected_reg & 0xC) / 4); |
| 362 | 776 //printf("write targets operator %d (%d of channel %d)\n", op, op % 4, op / 4); |
| 777 ym_operator * operator = context->operators + op; | |
| 778 switch (context->selected_reg & 0xF0) | |
| 779 { | |
| 780 case REG_DETUNE_MULT: | |
| 781 operator->detune = value >> 4 & 0x7; | |
| 782 operator->multiple = value & 0xF; | |
| 783 break; | |
| 784 case REG_TOTAL_LEVEL: | |
| 785 operator->total_level = (value & 0x7F) << 5; | |
| 786 break; | |
| 787 case REG_ATTACK_KS: | |
| 376 | 788 operator->key_scaling = 3 - (value >> 6); |
| 362 | 789 operator->rates[PHASE_ATTACK] = value & 0x1F; |
| 790 break; | |
| 791 case REG_DECAY_AM: | |
| 792 //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
|
793 operator->am = value & 0x80; |
| 362 | 794 operator->rates[PHASE_DECAY] = value & 0x1F; |
| 795 break; | |
| 796 case REG_SUSTAIN_RATE: | |
| 797 operator->rates[PHASE_SUSTAIN] = value & 0x1F; | |
| 798 break; | |
| 799 case REG_S_LVL_R_RATE: | |
| 800 operator->rates[PHASE_RELEASE] = (value & 0xF) << 1 | 1; | |
|
852
5de8759b87af
Fix some bugs in the attack phase and sustain level in the envelope generator
Michael Pavone <pavone@retrodev.com>
parents:
851
diff
changeset
|
801 operator->sustain_level = (value & 0xF0) << 3; |
|
5de8759b87af
Fix some bugs in the attack phase and sustain level in the envelope generator
Michael Pavone <pavone@retrodev.com>
parents:
851
diff
changeset
|
802 if (operator->sustain_level == 0x780) { |
|
5de8759b87af
Fix some bugs in the attack phase and sustain level in the envelope generator
Michael Pavone <pavone@retrodev.com>
parents:
851
diff
changeset
|
803 operator->sustain_level = MAX_ENVELOPE; |
|
5de8759b87af
Fix some bugs in the attack phase and sustain level in the envelope generator
Michael Pavone <pavone@retrodev.com>
parents:
851
diff
changeset
|
804 } |
| 362 | 805 break; |
| 806 } | |
| 807 } | |
| 808 } else { | |
| 809 uint8_t channel = context->selected_reg & 0x3; | |
| 810 if (channel != 3) { | |
| 811 if (context->selected_part) { | |
| 812 channel += 3; | |
| 813 } | |
| 814 //printf("write targets channel %d\n", channel); | |
| 815 switch (context->selected_reg & 0xFC) | |
| 816 { | |
| 817 case REG_FNUM_LOW: | |
| 818 context->channels[channel].block = context->channels[channel].block_fnum_latch >> 3 & 0x7; | |
| 819 context->channels[channel].fnum = (context->channels[channel].block_fnum_latch & 0x7) << 8 | value; | |
| 820 context->channels[channel].keycode = context->channels[channel].block << 2 | fnum_to_keycode[context->channels[channel].fnum >> 7]; | |
| 821 break; | |
| 822 case REG_BLOCK_FNUM_H:{ | |
| 823 context->channels[channel].block_fnum_latch = value; | |
| 824 break; | |
| 825 } | |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
826 case REG_FNUM_LOW_CH3: |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
827 if (channel < 3) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
828 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
|
829 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
|
830 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
|
831 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
832 break; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
833 case REG_BLOCK_FN_CH3: |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
834 if (channel < 3) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
835 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
|
836 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
837 break; |
| 362 | 838 case REG_ALG_FEEDBACK: |
| 839 context->channels[channel].algorithm = value & 0x7; | |
| 840 context->channels[channel].feedback = value >> 3 & 0x7; | |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
841 //printf("Algorithm %d, feedback %d for channel %d\n", value & 0x7, value >> 3 & 0x7, channel); |
| 362 | 842 break; |
| 843 case REG_LR_AMS_PMS: | |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
844 context->channels[channel].pms = (value & 0x7) * 32; |
| 362 | 845 context->channels[channel].ams = value >> 4 & 0x3; |
| 846 context->channels[channel].lr = value & 0xC0; | |
|
369
fc820ab1394b
Fix left/right enable default value
Mike Pavone <pavone@retrodev.com>
parents:
365
diff
changeset
|
847 //printf("Write of %X to LR_AMS_PMS reg for channel %d\n", value, channel); |
| 362 | 848 break; |
| 849 } | |
| 850 } | |
| 851 } | |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
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852 |
| 362 | 853 context->write_cycle = context->current_cycle; |
|
535
aaa77e351c24
Better emulation of the YM-2612 busy flag
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parents:
532
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854 context->busy_cycles = context->selected_reg < 0xA0 ? BUSY_CYCLES_DATA_LOW : BUSY_CYCLES_DATA_HIGH; |
| 374 | 855 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.
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|
856 } |
|
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:
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changeset
|
857 |
|
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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|
858 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.
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parents:
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changeset
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859 { |
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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>
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860 return context->status; |
|
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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parents:
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changeset
|
861 } |
|
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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parents:
diff
changeset
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862 |
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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
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863 void ym_print_channel_info(ym2612_context *context, int channel) |
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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>
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864 { |
|
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
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865 ym_channel *chan = context->channels + channel; |
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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
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parents:
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866 printf("\n***Channel %d***\n" |
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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
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867 "Algorithm: %d\n" |
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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>
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868 "Feedback: %d\n" |
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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>
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869 "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>
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870 "AMS: %d\n" |
|
845
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
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871 "PMS: %d\n", |
|
739
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
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872 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>
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873 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
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874 chan->ams, chan->pms); |
|
930
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
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875 if (channel == 2) { |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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876 printf( |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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877 "Mode: %X: %s\n", |
|
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Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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878 context->ch3_mode, context->ch3_mode ? "special" : "normal"); |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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879 } |
|
739
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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
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880 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:
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881 { |
|
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
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882 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
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883 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:
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884 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:
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885 } 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:
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|
886 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
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parents:
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|
887 } |
|
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
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parents:
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|
888 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:
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889 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
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parents:
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890 " 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
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891 " 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>
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892 " 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
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893 " 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
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894 " 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
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895 " 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
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896 " 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
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897 " 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
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parents:
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898 " Release Rate: %d\n" |
|
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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
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|
899 " 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
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900 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
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901 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
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902 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
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|
903 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
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|
904 } |
|
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
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parents:
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|
905 } |
|
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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
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parents:
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diff
changeset
|
906 |
|
930
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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changeset
|
907 void ym_print_timer_info(ym2612_context *context) |
|
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parents:
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changeset
|
908 { |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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parents:
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changeset
|
909 printf("***Timer A***\n" |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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parents:
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diff
changeset
|
910 "Current Value: %d\n" |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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parents:
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diff
changeset
|
911 "Load Value: %d\n" |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
912 "Triggered: %s\n" |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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parents:
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diff
changeset
|
913 "Enabled: %s\n\n", |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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changeset
|
914 context->timer_a, |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
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|
915 context->timer_a_load, |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
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changeset
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916 context->status & BIT_STATUS_TIMERA ? "yes" : "no", |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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|
917 context->timer_control & BIT_TIMERA_ENABLE ? "yes" : "no"); |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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|
918 printf("***Timer B***\n" |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
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changeset
|
919 "Current Value: %d\n" |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
920 "Load Value: %d\n" |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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parents:
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diff
changeset
|
921 "Triggered: %s\n" |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
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diff
changeset
|
922 "Enabled: %s\n\n", |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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|
923 context->timer_b, |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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|
924 context->timer_b_load, |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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changeset
|
925 context->status & BIT_STATUS_TIMERB ? "yes" : "no", |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
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parents:
929
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changeset
|
926 context->timer_control & BIT_TIMERB_ENABLE ? "yes" : "no"); |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
927 } |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
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changeset
|
928 |