Mercurial > repos > blastem
annotate ym2612.c @ 1552:13a82adb185b
Add support for float32 format audio samples
author | Michael Pavone <pavone@retrodev.com> |
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date | Wed, 28 Mar 2018 23:56:38 -0700 |
parents | ce1f93be0104 |
children | 6ce36c3f250b |
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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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 static 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 static 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 static uint16_t pow_table[POW_TABLE_SIZE]; |
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62 |
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63 static uint16_t rate_table_base[] = { |
362 | 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 static uint16_t rate_table[64*8]; |
362 | 77 |
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78 static uint8_t lfo_timer_values[] = {108, 77, 71, 67, 62, 44, 8, 5}; |
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79 static 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 static 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 static 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 static FILE * debug_file = NULL; |
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103 static uint32_t first_key_on=0; |
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104 |
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105 static ym2612_context * log_context = NULL; |
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106 |
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107 static 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 |
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132 #define TIMER_A_MAX 1023 |
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133 #define TIMER_B_MAX 255 |
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134 |
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135 void ym_reset(ym2612_context *context) |
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136 { |
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137 memset(context->part1_regs, 0, sizeof(context->part1_regs)); |
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138 memset(context->part2_regs, 0, sizeof(context->part2_regs)); |
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139 memset(context->operators, 0, sizeof(context->operators)); |
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140 memset(context->channels, 0, sizeof(context->channels)); |
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141 memset(context->ch3_supp, 0, sizeof(context->ch3_supp)); |
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142 context->selected_reg = 0; |
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143 context->csm_keyon = 0; |
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144 context->ch3_mode = 0; |
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145 context->dac_enable = 0; |
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146 context->status = 0; |
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147 context->timer_a_load = 0; |
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148 context->timer_b_load = 0; |
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149 //TODO: Confirm these on hardware |
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150 context->timer_a = TIMER_A_MAX; |
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151 context->timer_b = TIMER_B_MAX; |
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152 |
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153 //TODO: Reset LFO state |
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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 } |
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159 context->write_cycle = CYCLE_NEVER; |
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160 for (int i = 0; i < NUM_OPERATORS; i++) { |
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161 context->operators[i].envelope = MAX_ENVELOPE; |
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162 context->operators[i].env_phase = PHASE_RELEASE; |
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163 } |
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164 } |
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165 |
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166 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, uint32_t lowpass_cutoff) |
288
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167 { |
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168 static uint8_t registered_finalize; |
370
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169 dfopen(debug_file, "ym_debug.txt", "w"); |
288
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170 memset(context, 0, sizeof(*context)); |
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171 context->audio = render_audio_source(2); |
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172 context->audio_buffer = render_audio_source_buffer(context->audio); |
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173 context->sample_rate = sample_rate; |
380
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174 context->clock_inc = clock_div * 6; |
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175 ym_adjust_master_clock(context, master_clock); |
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176 |
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177 double rc = (1.0 / (double)lowpass_cutoff) / (2.0 * M_PI); |
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178 double dt = 1.0 / ((double)master_clock / (double)(context->clock_inc * NUM_OPERATORS)); |
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179 double alpha = dt / (dt + rc); |
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180 context->lowpass_alpha = (int32_t)(((double)0x10000) * alpha); |
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181 |
364
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Incredibly broken YM2612 support plus a fix to Z80 bus request
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182 context->sample_limit = sample_limit*2; |
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183 |
369
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184 //some games seem to expect that the LR flags start out as 1 |
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185 for (int i = 0; i < NUM_CHANNELS; i++) { |
407
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186 if (options & YM_OPT_WAVE_LOG) { |
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187 char fname[64]; |
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188 sprintf(fname, "ym_channel_%d.wav", i); |
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189 FILE * f = context->channels[i].logfile = fopen(fname, "wb"); |
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190 if (!f) { |
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191 fprintf(stderr, "Failed to open WAVE log file %s for writing\n", fname); |
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192 continue; |
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193 } |
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194 if (!wave_init(f, sample_rate, 16, 1)) { |
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195 fclose(f); |
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196 context->channels[i].logfile = NULL; |
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197 } |
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198 } |
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199 } |
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200 if (options & YM_OPT_WAVE_LOG) { |
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201 log_context = context; |
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202 if (!registered_finalize) { |
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203 atexit(ym_finalize_log); |
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204 registered_finalize = 1; |
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205 } |
369
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206 } |
359
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207 if (!did_tbl_init) { |
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208 //populate sine table |
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209 for (int32_t i = 0; i < 512; i++) { |
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210 double sine = sin( ((double)(i*2+1) / SINE_TABLE_SIZE) * M_PI_2 ); |
448
e85a107e6ec0
Fix handling of key on in YM2612 core
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424
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211 |
359
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212 //table stores 4.8 fixed pointed representation of the base 2 log |
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213 sine_table[i] = round_fixed_point(-log2(sine), 8); |
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214 } |
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215 //populate power table |
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216 for (int32_t i = 0; i < POW_TABLE_SIZE; i++) { |
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217 double linear = pow(2, -((double)((i & 0xFF)+1) / 256.0)); |
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218 int32_t tmp = round_fixed_point(linear, 11); |
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219 int32_t shift = (i >> 8) - 2; |
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220 if (shift < 0) { |
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221 tmp <<= 0-shift; |
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222 } else { |
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223 tmp >>= shift; |
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224 } |
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225 pow_table[i] = tmp; |
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226 } |
362 | 227 //populate envelope generator rate table, from small base table |
228 for (int rate = 0; rate < 64; rate++) { | |
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229 for (int cycle = 0; cycle < 8; cycle++) { |
362 | 230 uint16_t value; |
370
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231 if (rate < 2) { |
362 | 232 value = 0; |
365
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233 } else if (rate >= 60) { |
362 | 234 value = 8; |
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235 } else if (rate < 8) { |
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236 value = rate_table_base[((rate & 6) == 6 ? 16 : 0) + cycle]; |
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237 } else if (rate < 48) { |
362 | 238 value = rate_table_base[(rate & 0x3) * 8 + cycle]; |
239 } else { | |
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240 value = rate_table_base[32 + (rate & 0x3) * 8 + cycle] << ((rate - 48) >> 2); |
362 | 241 } |
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242 rate_table[rate * 8 + cycle] = value; |
362 | 243 } |
244 } | |
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245 //populate LFO PM table from small base table |
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246 //seems like there must be a better way to derive this |
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247 for (int freq = 0; freq < 128; freq++) { |
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248 for (int pms = 0; pms < 8; pms++) { |
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249 for (int step = 0; step < 32; step++) { |
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250 int16_t value = 0; |
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251 for (int bit = 0x40, shift = 0; bit > 0; bit >>= 1, shift++) { |
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252 if (freq & bit) { |
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253 value += lfo_pm_base[pms][(step & 0x8) ? 7-step & 7 : step & 7] >> shift; |
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254 } |
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255 } |
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256 if (step & 0x10) { |
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257 value = -value; |
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258 } |
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259 lfo_pm_table[freq * 256 + pms * 32 + step] = value; |
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260 } |
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261 } |
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262 } |
359
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263 } |
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264 ym_reset(context); |
288
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265 } |
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266 |
884
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267 void ym_free(ym2612_context *context) |
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268 { |
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269 render_free_source(context->audio); |
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270 if (context == log_context) { |
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271 ym_finalize_log(); |
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272 } |
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273 free(context); |
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274 } |
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275 |
522
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276 #define YM_VOLUME_MULTIPLIER 2 |
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277 #define YM_VOLUME_DIVIDER 3 |
381
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278 #define YM_MOD_SHIFT 1 |
370
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279 |
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280 #define CSM_MODE 0x80 |
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281 |
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282 #define SSG_ENABLE 8 |
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283 #define SSG_INVERT 4 |
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284 #define SSG_ALTERNATE 2 |
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285 #define SSG_HOLD 1 |
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286 |
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287 #define SSG_CENTER 0x800 |
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288 |
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289 static void start_envelope(ym_operator *op, ym_channel *channel) |
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290 { |
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291 //Deal with "infinite" attack rates |
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292 uint8_t rate = op->rates[PHASE_ATTACK]; |
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293 if (rate) { |
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294 uint8_t ks = channel->keycode >> op->key_scaling;; |
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295 rate = rate*2 + ks; |
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296 } |
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297 if (rate >= 62) { |
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298 op->env_phase = PHASE_DECAY; |
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299 op->envelope = 0; |
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300 } else { |
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301 op->env_phase = PHASE_ATTACK; |
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302 } |
1301
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303 } |
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304 |
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305 static void keyon(ym_operator *op, ym_channel *channel) |
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306 { |
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307 start_envelope(op, channel); |
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308 op->phase_counter = 0; |
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309 op->inverted = op->ssg & SSG_INVERT; |
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310 } |
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311 |
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312 static const uint8_t keyon_bits[] = {0x10, 0x40, 0x20, 0x80}; |
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313 |
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314 static void keyoff(ym_operator *op) |
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315 { |
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316 op->env_phase = PHASE_RELEASE; |
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317 if (op->inverted) { |
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318 //Nemesis says the inversion state doesn't change here, but I don't see how that is observable either way |
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319 op->inverted = 0; |
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320 op->envelope = (SSG_CENTER - op->envelope) & MAX_ENVELOPE; |
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321 } |
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322 } |
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323 |
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324 static void csm_keyoff(ym2612_context *context) |
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325 { |
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326 context->csm_keyon = 0; |
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327 uint8_t changes = 0xF0 ^ context->channels[2].keyon; |
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328 for (uint8_t op = 2*4, bit = 0; op < 3*4; op++, bit++) |
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329 { |
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330 if (changes & keyon_bits[bit]) { |
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331 keyoff(context->operators + op); |
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332 } |
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333 } |
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334 } |
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335 |
288
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336 void ym_run(ym2612_context * context, uint32_t to_cycle) |
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337 { |
362 | 338 //printf("Running YM2612 from cycle %d to cycle %d\n", context->current_cycle, to_cycle); |
339 //TODO: Fix channel update order OR remap channels in register write | |
380
1c8d74f2ab0b
Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
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340 for (; context->current_cycle < to_cycle; context->current_cycle += context->clock_inc) { |
359
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341 //Update timers at beginning of 144 cycle period |
403 | 342 if (!context->current_op) { |
343 if (context->timer_control & BIT_TIMERA_ENABLE) { | |
344 if (context->timer_a != TIMER_A_MAX) { | |
345 context->timer_a++; | |
1300
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346 if (context->csm_keyon) { |
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347 csm_keyoff(context); |
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348 } |
403 | 349 } else { |
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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.
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350 if (context->timer_control & BIT_TIMERA_LOAD) { |
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351 context->timer_control &= ~BIT_TIMERA_LOAD; |
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352 } else if (context->timer_control & BIT_TIMERA_OVEREN) { |
403 | 353 context->status |= BIT_STATUS_TIMERA; |
354 } | |
355 context->timer_a = context->timer_a_load; | |
1300
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356 if (!context->csm_keyon && context->ch3_mode == CSM_MODE) { |
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357 context->csm_keyon = 0xF0; |
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358 uint8_t changes = 0xF0 ^ context->channels[2].keyon;; |
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359 for (uint8_t op = 2*4, bit = 0; op < 3*4; op++, bit++) |
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360 { |
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361 if (changes & keyon_bits[bit]) { |
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362 keyon(context->operators + op, context->channels + 2); |
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363 } |
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364 } |
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365 } |
359
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366 } |
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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367 } |
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>
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368 if (!context->sub_timer_b) { |
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
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369 if (context->timer_control & BIT_TIMERB_ENABLE) { |
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
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370 if (context->timer_b != TIMER_B_MAX) { |
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371 context->timer_b++; |
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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.
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372 } else { |
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
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373 if (context->timer_control & BIT_TIMERB_LOAD) { |
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
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374 context->timer_control &= ~BIT_TIMERB_LOAD; |
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
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375 } else if (context->timer_control & BIT_TIMERB_OVEREN) { |
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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.
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376 context->status |= BIT_STATUS_TIMERB; |
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
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diff
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377 } |
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.
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378 context->timer_b = context->timer_b_load; |
359
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379 } |
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380 } |
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YM2612 WIP snapshot before register refactor
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381 } |
845
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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>
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382 context->sub_timer_b += 0x10; |
740
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
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383 //Update LFO |
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Fix LFO counter update speed and implement amplitude modulation
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384 if (context->lfo_enable) { |
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385 if (context->lfo_counter) { |
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386 context->lfo_counter--; |
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387 } else { |
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388 context->lfo_counter = lfo_timer_values[context->lfo_freq]; |
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389 context->lfo_am_step += 2; |
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390 context->lfo_am_step &= 0xFE; |
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391 context->lfo_pm_step = context->lfo_am_step / 8; |
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392 } |
411
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Initial stab at LFO phase modulation
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diff
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393 } |
baf4688901f2
Initial stab at LFO phase modulation
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394 } |
359
cc39629e8d06
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395 //Update Envelope Generator |
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
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362
diff
changeset
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396 if (!(context->current_op % 3)) { |
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
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362
diff
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397 uint32_t env_cyc = context->env_counter; |
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Incredibly broken YM2612 support plus a fix to Z80 bus request
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diff
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398 uint32_t op = context->current_env_op; |
362 | 399 ym_operator * operator = context->operators + op; |
400 ym_channel * channel = context->channels + op/4; | |
359
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401 uint8_t rate; |
929
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Change where decay to sustain transition happens to match hardware when decay rate is slow or 0
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402 if (operator->env_phase == PHASE_DECAY && operator->envelope >= operator->sustain_level) { |
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Change where decay to sustain transition happens to match hardware when decay rate is slow or 0
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403 //operator->envelope = operator->sustain_level; |
0ee8cfcc06d1
Change where decay to sustain transition happens to match hardware when decay rate is slow or 0
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diff
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404 operator->env_phase = PHASE_SUSTAIN; |
0ee8cfcc06d1
Change where decay to sustain transition happens to match hardware when decay rate is slow or 0
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884
diff
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405 } |
1300
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
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diff
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406 rate = operator->rates[operator->env_phase]; |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
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parents:
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407 if (rate) { |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
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408 uint8_t ks = channel->keycode >> operator->key_scaling;; |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
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diff
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409 rate = rate*2 + ks; |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
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1102
diff
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410 if (rate > 63) { |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
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1102
diff
changeset
|
411 rate = 63; |
362 | 412 } |
413 } | |
414 uint32_t cycle_shift = rate < 0x30 ? ((0x2F - rate) >> 2) : 0; | |
370
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
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369
diff
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415 if (first_key_on) { |
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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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416 dfprintf(debug_file, "Operator: %d, env rate: %d (2*%d+%d), env_cyc: %d, cycle_shift: %d, env_cyc & ((1 << cycle_shift) - 1): %d\n", op, rate, operator->rates[operator->env_phase], channel->keycode >> operator->key_scaling,env_cyc, cycle_shift, env_cyc & ((1 << cycle_shift) - 1)); |
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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369
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417 } |
362 | 418 if (!(env_cyc & ((1 << cycle_shift) - 1))) { |
419 uint32_t update_cycle = env_cyc >> cycle_shift & 0x7; | |
852
5de8759b87af
Fix some bugs in the attack phase and sustain level in the envelope generator
Michael Pavone <pavone@retrodev.com>
parents:
851
diff
changeset
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420 uint16_t envelope_inc = rate_table[rate * 8 + update_cycle]; |
362 | 421 if (operator->env_phase == PHASE_ATTACK) { |
422 //this can probably be optimized to a single shift rather than a multiply + shift | |
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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diff
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423 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.
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424 dfprintf(debug_file, "Changing op %d envelope %d by %d(%d * %d) in attack phase\n", op, operator->envelope, (~operator->envelope * envelope_inc) >> 4, ~operator->envelope, envelope_inc); |
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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425 } |
513
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
426 uint16_t old_env = operator->envelope; |
852
5de8759b87af
Fix some bugs in the attack phase and sustain level in the envelope generator
Michael Pavone <pavone@retrodev.com>
parents:
851
diff
changeset
|
427 operator->envelope += ((~operator->envelope * envelope_inc) >> 4) & 0xFFFFFFFC; |
513
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
428 if (operator->envelope > old_env) { |
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
429 //Handle overflow |
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
430 operator->envelope = 0; |
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
431 } |
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
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|
432 if (!operator->envelope) { |
362 | 433 operator->env_phase = PHASE_DECAY; |
434 } | |
435 } else { | |
370
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
436 if (first_key_on) { |
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
437 dfprintf(debug_file, "Changing op %d envelope %d by %d in %s phase\n", op, operator->envelope, envelope_inc, |
370
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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369
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438 operator->env_phase == PHASE_SUSTAIN ? "sustain" : (operator->env_phase == PHASE_DECAY ? "decay": "release")); |
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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439 } |
1301
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
440 if (operator->ssg) { |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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1300
diff
changeset
|
441 if (operator->envelope < SSG_CENTER) { |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
1300
diff
changeset
|
442 envelope_inc *= 4; |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
1300
diff
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|
443 } else { |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
444 envelope_inc = 0; |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
1300
diff
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|
445 } |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
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diff
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|
446 } |
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
|
447 //envelope value is 10-bits, but it will be used as a 4.8 value |
5de8759b87af
Fix some bugs in the attack phase and sustain level in the envelope generator
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parents:
851
diff
changeset
|
448 operator->envelope += envelope_inc << 2; |
362 | 449 //clamp to max attenuation value |
1301
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Initial implementation of YM2612 SSG-EG mode
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changeset
|
450 if ( |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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|
451 operator->envelope > MAX_ENVELOPE |
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Initial implementation of YM2612 SSG-EG mode
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diff
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452 || (operator->env_phase == PHASE_RELEASE && operator->envelope >= SSG_CENTER) |
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Initial implementation of YM2612 SSG-EG mode
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parents:
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diff
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453 ) { |
362 | 454 operator->envelope = MAX_ENVELOPE; |
455 } | |
456 } | |
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
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|
457 } |
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
458 context->current_env_op++; |
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
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parents:
362
diff
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|
459 if (context->current_env_op == NUM_OPERATORS) { |
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
460 context->current_env_op = 0; |
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
461 context->env_counter++; |
362 | 462 } |
463 } | |
448
e85a107e6ec0
Fix handling of key on in YM2612 core
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parents:
424
diff
changeset
|
464 |
362 | 465 //Update Phase Generator |
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
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|
466 uint32_t channel = context->current_op / 4; |
362 | 467 if (channel != 5 || !context->dac_enable) { |
364
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Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
468 uint32_t op = context->current_op; |
362 | 469 //printf("updating operator %d of channel %d\n", op, channel); |
470 ym_operator * operator = context->operators + op; | |
471 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
|
472 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
|
473 operator->phase_counter += ym_calc_phase_inc(context, operator, context->current_op); |
371
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474 int16_t mod = 0; |
362 | 475 switch (op % 4) |
359
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diff
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|
476 { |
362 | 477 case 0://Operator 1 |
377 | 478 if (chan->feedback) { |
527
7df7f493b3b6
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parents:
522
diff
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|
479 mod = (chan->op1_old + operator->output) >> (10-chan->feedback); |
377 | 480 } |
359
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481 break; |
362 | 482 case 1://Operator 3 |
483 switch(chan->algorithm) | |
484 { | |
485 case 0: | |
486 case 2: | |
487 //modulate by operator 2 | |
379
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488 mod = context->operators[op+1].output >> YM_MOD_SHIFT; |
362 | 489 break; |
490 case 1: | |
491 //modulate by operator 1+2 | |
379
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492 mod = (context->operators[op-1].output + context->operators[op+1].output) >> YM_MOD_SHIFT; |
362 | 493 break; |
494 case 5: | |
495 //modulate by operator 1 | |
379
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diff
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496 mod = context->operators[op-1].output >> YM_MOD_SHIFT; |
362 | 497 } |
498 break; | |
499 case 2://Operator 2 | |
406
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500 if (chan->algorithm != 1 && chan->algorithm != 2 && chan->algorithm != 7) { |
362 | 501 //modulate by Operator 1 |
379
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502 mod = context->operators[op-2].output >> YM_MOD_SHIFT; |
362 | 503 } |
359
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504 break; |
362 | 505 case 3://Operator 4 |
506 switch(chan->algorithm) | |
507 { | |
508 case 0: | |
509 case 1: | |
510 case 4: | |
511 //modulate by operator 3 | |
379
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512 mod = context->operators[op-2].output >> YM_MOD_SHIFT; |
362 | 513 break; |
514 case 2: | |
515 //modulate by operator 1+3 | |
379
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516 mod = (context->operators[op-3].output + context->operators[op-2].output) >> YM_MOD_SHIFT; |
362 | 517 break; |
518 case 3: | |
519 //modulate by operator 2+3 | |
379
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Make shift value of operator output to modulation input a define
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parents:
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diff
changeset
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520 mod = (context->operators[op-1].output + context->operators[op-2].output) >> YM_MOD_SHIFT; |
362 | 521 break; |
522 case 5: | |
523 //modulate by operator 1 | |
379
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Make shift value of operator output to modulation input a define
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parents:
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diff
changeset
|
524 mod = context->operators[op-3].output >> YM_MOD_SHIFT; |
362 | 525 break; |
526 } | |
359
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|
527 break; |
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|
528 } |
1301
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
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diff
changeset
|
529 uint16_t env = operator->envelope; |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
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diff
changeset
|
530 if (operator->ssg) { |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
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diff
changeset
|
531 if (env >= SSG_CENTER) { |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
1300
diff
changeset
|
532 if (operator->ssg & SSG_ALTERNATE) { |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
533 if (operator->env_phase != PHASE_RELEASE && ( |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
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diff
changeset
|
534 !(operator->ssg & SSG_HOLD) || ((operator->ssg ^ operator->inverted) & SSG_INVERT) == 0 |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
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diff
changeset
|
535 )) { |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
536 operator->inverted ^= SSG_INVERT; |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
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changeset
|
537 } |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
1300
diff
changeset
|
538 } else if (!(operator->ssg & SSG_HOLD)) { |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
1300
diff
changeset
|
539 phase = operator->phase_counter = 0; |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
540 } |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
541 if ( |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
542 (operator->env_phase == PHASE_DECAY || operator->env_phase == PHASE_SUSTAIN) |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
1300
diff
changeset
|
543 && !(operator->ssg & SSG_HOLD) |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
544 ) { |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
545 start_envelope(operator, chan); |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
546 env = operator->envelope; |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
1300
diff
changeset
|
547 } |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
548 } |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
549 if (operator->inverted) { |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
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diff
changeset
|
550 env = (SSG_CENTER - env) & MAX_ENVELOPE; |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
1300
diff
changeset
|
551 } |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
552 } |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
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parents:
1300
diff
changeset
|
553 env += operator->total_level; |
740
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
554 if (operator->am) { |
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
555 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
|
556 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
|
557 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
|
558 } 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
|
559 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
|
560 } |
740
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
561 } |
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
|
562 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
|
563 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
|
564 } |
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
|
565 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
|
566 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
|
567 } |
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
568 //if ((channel != 0 && channel != 4) || chan->algorithm != 5) { |
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
569 phase += mod; |
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
570 //} |
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
571 |
371
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
572 int16_t output = pow_table[sine_table[phase & 0x1FF] + env]; |
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
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parents:
288
diff
changeset
|
573 if (phase & 0x200) { |
cc39629e8d06
YM2612 WIP snapshot before register refactor
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parents:
288
diff
changeset
|
574 output = -output; |
cc39629e8d06
YM2612 WIP snapshot before register refactor
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parents:
288
diff
changeset
|
575 } |
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
576 if (op % 4 == 0) { |
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
577 chan->op1_old = operator->output; |
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
578 } |
362 | 579 operator->output = output; |
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
580 //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
|
581 if (op % 4 == 3) { |
362 | 582 if (chan->algorithm < 4) { |
583 chan->output = operator->output; | |
584 } 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
|
585 chan->output = operator->output + context->operators[channel * 4 + 2].output; |
359
cc39629e8d06
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parents:
288
diff
changeset
|
586 } else { |
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
587 output = 0; |
362 | 588 for (uint32_t op = ((chan->algorithm == 7) ? 0 : 1) + channel*4; op < (channel+1)*4; op++) { |
589 output += context->operators[op].output; | |
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
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parents:
288
diff
changeset
|
590 } |
362 | 591 chan->output = output; |
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
592 } |
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
|
593 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
|
594 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
|
595 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
|
596 value |= 0xC000; |
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
597 } |
522
6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
Michael Pavone <pavone@retrodev.com>
parents:
521
diff
changeset
|
598 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
|
599 } |
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
600 } |
362 | 601 //puts("operator update done"); |
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
602 } |
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
603 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
|
604 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
|
605 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
|
606 |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
607 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
|
608 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
|
609 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
|
610 int16_t value = context->channels[i].output; |
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
611 if (value > 0x1FE0) { |
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
612 value = 0x1FE0; |
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
613 } else if (value < -0x1FF0) { |
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
614 value = -0x1FF0; |
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
615 } else { |
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
616 value &= 0x3FE0; |
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
617 if (value & 0x2000) { |
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
618 value |= 0xC000; |
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
619 } |
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
|
620 } |
965
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
621 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
|
622 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
|
623 } |
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
|
624 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
|
625 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
|
626 } |
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
|
627 if (context->channels[i].lr & 0x40) { |
965
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
628 right += (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER; |
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
629 } |
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
|
630 } |
965
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
631 int32_t tmp = left * context->lowpass_alpha + context->last_left * (0x10000 - context->lowpass_alpha); |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
632 left = tmp >> 16; |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
633 tmp = right * context->lowpass_alpha + context->last_right * (0x10000 - context->lowpass_alpha); |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
634 right = tmp >> 16; |
1356
4d16c09210fd
Fix resampling code to deal with case in which output frequency is greater than the input frequency. Probably could stand to be improved, but at least it doesn't cause the emulator to deadlock
Michael Pavone <pavone@retrodev.com>
parents:
1308
diff
changeset
|
635 while (context->buffer_fraction > BUFFER_INC_RES) { |
965
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
636 context->buffer_fraction -= BUFFER_INC_RES; |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
637 |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
638 int64_t tmp = context->last_left * ((context->buffer_fraction << 16) / context->buffer_inc); |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
639 tmp += left * (0x10000 - ((context->buffer_fraction << 16) / context->buffer_inc)); |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
640 context->audio_buffer[context->buffer_pos] = tmp >> 16; |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
641 |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
642 tmp = context->last_right * ((context->buffer_fraction << 16) / context->buffer_inc); |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
643 tmp += right * (0x10000 - ((context->buffer_fraction << 16) / context->buffer_inc)); |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
644 context->audio_buffer[context->buffer_pos+1] = tmp >> 16; |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
645 |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
646 context->buffer_pos += 2; |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
647 if (context->buffer_pos == context->sample_limit) { |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
648 if (!headless) { |
1551
ce1f93be0104
Small cleanup to audio interface between emulation code and renderer backend
Michael Pavone <pavone@retrodev.com>
parents:
1450
diff
changeset
|
649 context->audio_buffer = render_audio_ready(context->audio); |
ce1f93be0104
Small cleanup to audio interface between emulation code and renderer backend
Michael Pavone <pavone@retrodev.com>
parents:
1450
diff
changeset
|
650 context->buffer_pos = 0; |
965
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
651 } |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
483
diff
changeset
|
652 } |
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
|
653 } |
965
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
654 context->last_left = left; |
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
655 context->last_right = right; |
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
656 } |
965
5257e85364ed
Implemented linear resampling and low pass filter for the YM2612
Michael Pavone <pavone@retrodev.com>
parents:
936
diff
changeset
|
657 |
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
|
658 } |
535
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
659 if (context->current_cycle >= context->write_cycle + (context->busy_cycles * context->clock_inc / 6)) { |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
660 context->status &= 0x7F; |
374 | 661 context->write_cycle = CYCLE_NEVER; |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
662 } |
362 | 663 //printf("Done running YM2612 at cycle %d\n", context->current_cycle, to_cycle); |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
664 } |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
665 |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
666 void ym_address_write_part1(ym2612_context * context, uint8_t address) |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
667 { |
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
668 //printf("address_write_part1: %X\n", address); |
362 | 669 context->selected_reg = address; |
670 context->selected_part = 0; | |
535
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
671 context->write_cycle = context->current_cycle; |
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
672 context->busy_cycles = BUSY_CYCLES_ADDRESS; |
650
55b550fe8891
Set the busy flag after a YM-2612 address write
Michael Pavone <pavone@retrodev.com>
parents:
535
diff
changeset
|
673 context->status |= 0x80; |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
674 } |
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 |
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
|
676 void ym_address_write_part2(ym2612_context * context, uint8_t address) |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
677 { |
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
678 //printf("address_write_part2: %X\n", address); |
362 | 679 context->selected_reg = address; |
680 context->selected_part = 1; | |
535
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
681 context->write_cycle = context->current_cycle; |
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
682 context->busy_cycles = BUSY_CYCLES_ADDRESS; |
650
55b550fe8891
Set the busy flag after a YM-2612 address write
Michael Pavone <pavone@retrodev.com>
parents:
535
diff
changeset
|
683 context->status |= 0x80; |
362 | 684 } |
685 | |
1102
c15896605bf2
Clean up symbol visiblity and delete a ltitle bit of dead code
Michael Pavone <pavone@retrodev.com>
parents:
1002
diff
changeset
|
686 static uint8_t fnum_to_keycode[] = { |
362 | 687 //F11 = 0 |
688 0,0,0,0,0,0,0,1, | |
689 //F11 = 1 | |
690 2,3,3,3,3,3,3,3 | |
691 }; | |
692 | |
693 //table courtesy of Nemesis | |
1102
c15896605bf2
Clean up symbol visiblity and delete a ltitle bit of dead code
Michael Pavone <pavone@retrodev.com>
parents:
1002
diff
changeset
|
694 static uint32_t detune_table[][4] = { |
362 | 695 {0, 0, 1, 2}, //0 (0x00) |
696 {0, 0, 1, 2}, //1 (0x01) | |
697 {0, 0, 1, 2}, //2 (0x02) | |
698 {0, 0, 1, 2}, //3 (0x03) | |
699 {0, 1, 2, 2}, //4 (0x04) | |
700 {0, 1, 2, 3}, //5 (0x05) | |
701 {0, 1, 2, 3}, //6 (0x06) | |
702 {0, 1, 2, 3}, //7 (0x07) | |
703 {0, 1, 2, 4}, //8 (0x08) | |
704 {0, 1, 3, 4}, //9 (0x09) | |
705 {0, 1, 3, 4}, //10 (0x0A) | |
706 {0, 1, 3, 5}, //11 (0x0B) | |
707 {0, 2, 4, 5}, //12 (0x0C) | |
708 {0, 2, 4, 6}, //13 (0x0D) | |
709 {0, 2, 4, 6}, //14 (0x0E) | |
710 {0, 2, 5, 7}, //15 (0x0F) | |
711 {0, 2, 5, 8}, //16 (0x10) | |
712 {0, 3, 6, 8}, //17 (0x11) | |
713 {0, 3, 6, 9}, //18 (0x12) | |
714 {0, 3, 7,10}, //19 (0x13) | |
715 {0, 4, 8,11}, //20 (0x14) | |
716 {0, 4, 8,12}, //21 (0x15) | |
717 {0, 4, 9,13}, //22 (0x16) | |
718 {0, 5,10,14}, //23 (0x17) | |
719 {0, 5,11,16}, //24 (0x18) | |
720 {0, 6,12,17}, //25 (0x19) | |
721 {0, 6,13,19}, //26 (0x1A) | |
722 {0, 7,14,20}, //27 (0x1B) | |
723 {0, 8,16,22}, //28 (0x1C) | |
724 {0, 8,16,22}, //29 (0x1D) | |
725 {0, 8,16,22}, //30 (0x1E) | |
726 {0, 8,16,22} | |
727 }; //31 (0x1F) | |
728 | |
1102
c15896605bf2
Clean up symbol visiblity and delete a ltitle bit of dead code
Michael Pavone <pavone@retrodev.com>
parents:
1002
diff
changeset
|
729 static uint32_t ym_calc_phase_inc(ym2612_context * context, ym_operator * operator, uint32_t op) |
362 | 730 { |
731 uint32_t chan_num = op / 4; | |
732 //printf("ym_update_phase_inc | channel: %d, op: %d\n", chan_num, op); | |
733 //base frequency | |
734 ym_channel * channel = context->channels + chan_num; | |
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
735 uint32_t inc, detune; |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
736 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
|
737 //supplemental fnum registers are in a different order than normal slot paramters |
936
f1a8124ad881
Fix register to operator mapping for channel 3 special mode and actually get it right this time
Michael Pavone <pavone@retrodev.com>
parents:
935
diff
changeset
|
738 int index = op-2*4; |
f1a8124ad881
Fix register to operator mapping for channel 3 special mode and actually get it right this time
Michael Pavone <pavone@retrodev.com>
parents:
935
diff
changeset
|
739 if (index < 2) { |
f1a8124ad881
Fix register to operator mapping for channel 3 special mode and actually get it right this time
Michael Pavone <pavone@retrodev.com>
parents:
935
diff
changeset
|
740 index ^= 1; |
f1a8124ad881
Fix register to operator mapping for channel 3 special mode and actually get it right this time
Michael Pavone <pavone@retrodev.com>
parents:
935
diff
changeset
|
741 } |
738
8972378e314f
Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
parents:
650
diff
changeset
|
742 inc = context->ch3_supp[index].fnum; |
935
01fb50390b27
Remove phase increment caching. Fix LFO phase modulation calculation
Michael Pavone <pavone@retrodev.com>
parents:
930
diff
changeset
|
743 if (channel->pms) { |
01fb50390b27
Remove phase increment caching. Fix LFO phase modulation calculation
Michael Pavone <pavone@retrodev.com>
parents:
930
diff
changeset
|
744 inc = inc * 2 + lfo_pm_table[(inc & 0x7F0) * 16 + channel->pms + context->lfo_pm_step]; |
01fb50390b27
Remove phase increment caching. Fix LFO phase modulation calculation
Michael Pavone <pavone@retrodev.com>
parents:
930
diff
changeset
|
745 } |
738
8972378e314f
Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
parents:
650
diff
changeset
|
746 if (!context->ch3_supp[index].block) { |
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
747 inc >>= 1; |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
748 } else { |
738
8972378e314f
Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
parents:
650
diff
changeset
|
749 inc <<= (context->ch3_supp[index].block-1); |
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
750 } |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
751 //detune |
738
8972378e314f
Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
parents:
650
diff
changeset
|
752 detune = detune_table[context->ch3_supp[index].keycode][operator->detune & 0x3]; |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
753 } else { |
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
754 inc = channel->fnum; |
935
01fb50390b27
Remove phase increment caching. Fix LFO phase modulation calculation
Michael Pavone <pavone@retrodev.com>
parents:
930
diff
changeset
|
755 if (channel->pms) { |
01fb50390b27
Remove phase increment caching. Fix LFO phase modulation calculation
Michael Pavone <pavone@retrodev.com>
parents:
930
diff
changeset
|
756 inc = inc * 2 + lfo_pm_table[(inc & 0x7F0) * 16 + channel->pms + context->lfo_pm_step]; |
01fb50390b27
Remove phase increment caching. Fix LFO phase modulation calculation
Michael Pavone <pavone@retrodev.com>
parents:
930
diff
changeset
|
757 } |
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
758 if (!channel->block) { |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
759 inc >>= 1; |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
760 } else { |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
761 inc <<= (channel->block-1); |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
762 } |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
763 //detune |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
764 detune = detune_table[channel->keycode][operator->detune & 0x3]; |
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
765 } |
935
01fb50390b27
Remove phase increment caching. Fix LFO phase modulation calculation
Michael Pavone <pavone@retrodev.com>
parents:
930
diff
changeset
|
766 if (channel->pms) { |
01fb50390b27
Remove phase increment caching. Fix LFO phase modulation calculation
Michael Pavone <pavone@retrodev.com>
parents:
930
diff
changeset
|
767 inc >>= 1; |
01fb50390b27
Remove phase increment caching. Fix LFO phase modulation calculation
Michael Pavone <pavone@retrodev.com>
parents:
930
diff
changeset
|
768 } |
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
|
769 if (operator->detune & 0x4) { |
362 | 770 inc -= detune; |
771 //this can underflow, mask to 17-bit result | |
772 inc &= 0x1FFFF; | |
773 } else { | |
774 inc += detune; | |
775 } | |
776 //multiple | |
777 if (operator->multiple) { | |
778 inc *= operator->multiple; | |
739
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
779 inc &= 0xFFFFF; |
362 | 780 } else { |
781 //0.5 | |
782 inc >>= 1; | |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
783 } |
365
3ba3b6656fff
Actually save the shifted phase inc after applying the block shift
Mike Pavone <pavone@retrodev.com>
parents:
364
diff
changeset
|
784 //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
|
785 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
|
786 } |
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
|
787 |
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
|
788 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
|
789 { |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
790 if (context->selected_reg >= YM_REG_END) { |
362 | 791 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
|
792 } |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
793 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
|
794 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
|
795 return; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
796 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
797 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
|
798 } else { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
799 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
|
800 return; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
801 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
802 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
|
803 } |
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
|
804 dfprintf(debug_file, "write of %X to reg %X in part %d\n", value, context->selected_reg, context->selected_part+1); |
362 | 805 if (context->selected_reg < 0x30) { |
806 //Shared regs | |
807 switch (context->selected_reg) | |
808 { | |
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
809 //TODO: Test reg |
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
810 case REG_LFO: |
532
666210adf87b
Comment out LFO debug printf
Mike Pavone <pavone@retrodev.com>
parents:
527
diff
changeset
|
811 /*if ((value & 0x8) && !context->lfo_enable) { |
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
812 printf("LFO Enabled, Freq: %d\n", value & 0x7); |
532
666210adf87b
Comment out LFO debug printf
Mike Pavone <pavone@retrodev.com>
parents:
527
diff
changeset
|
813 }*/ |
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
814 context->lfo_enable = value & 0x8; |
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
815 if (!context->lfo_enable) { |
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
816 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
|
817 } |
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
818 context->lfo_freq = value & 0x7; |
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
819 |
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
820 break; |
362 | 821 case REG_TIMERA_HIGH: |
822 context->timer_a_load &= 0x3; | |
823 context->timer_a_load |= value << 2; | |
824 break; | |
825 case REG_TIMERA_LOW: | |
826 context->timer_a_load &= 0xFFFC; | |
827 context->timer_a_load |= value & 0x3; | |
828 break; | |
829 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
|
830 context->timer_b_load = value; |
362 | 831 break; |
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
832 case REG_TIME_CTRL: { |
403 | 833 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
|
834 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
|
835 context->timer_control |= BIT_TIMERA_LOAD; |
403 | 836 } |
837 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
|
838 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
|
839 context->timer_control |= BIT_TIMERB_LOAD; |
403 | 840 } |
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
|
841 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
|
842 context->timer_control |= value & 0xF; |
403 | 843 if (value & BIT_TIMERA_RESET) { |
844 context->status &= ~BIT_STATUS_TIMERA; | |
845 } | |
846 if (value & BIT_TIMERB_RESET) { | |
847 context->status &= ~BIT_STATUS_TIMERB; | |
848 } | |
1300
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
Michael Pavone <pavone@retrodev.com>
parents:
1102
diff
changeset
|
849 if (context->ch3_mode == CSM_MODE && (value & 0xC0) != CSM_MODE && context->csm_keyon) { |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
Michael Pavone <pavone@retrodev.com>
parents:
1102
diff
changeset
|
850 csm_keyoff(context); |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
Michael Pavone <pavone@retrodev.com>
parents:
1102
diff
changeset
|
851 } |
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
852 context->ch3_mode = value & 0xC0; |
362 | 853 break; |
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
854 } |
362 | 855 case REG_KEY_ONOFF: { |
856 uint8_t channel = value & 0x7; | |
386
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
857 if (channel != 3 && channel != 7) { |
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
858 if (channel > 2) { |
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
859 channel--; |
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
860 } |
1300
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
Michael Pavone <pavone@retrodev.com>
parents:
1102
diff
changeset
|
861 uint8_t changes = channel == 2 |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
Michael Pavone <pavone@retrodev.com>
parents:
1102
diff
changeset
|
862 ? (value | context->csm_keyon) ^ (context->channels[channel].keyon | context->csm_keyon) |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
Michael Pavone <pavone@retrodev.com>
parents:
1102
diff
changeset
|
863 : value ^ context->channels[channel].keyon; |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
Michael Pavone <pavone@retrodev.com>
parents:
1102
diff
changeset
|
864 context->channels[channel].keyon = value & 0xF0; |
851
b10cf2c921ad
Fix mapping of key on/off reg bits to operators
Michael Pavone <pavone@retrodev.com>
parents:
848
diff
changeset
|
865 for (uint8_t op = channel * 4, bit = 0; op < (channel + 1) * 4; op++, bit++) { |
1300
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
Michael Pavone <pavone@retrodev.com>
parents:
1102
diff
changeset
|
866 if (changes & keyon_bits[bit]) { |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
Michael Pavone <pavone@retrodev.com>
parents:
1102
diff
changeset
|
867 if (value & keyon_bits[bit]) { |
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
868 first_key_on = 1; |
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
869 //printf("Key On for operator %d in channel %d\n", op, channel); |
1300
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
Michael Pavone <pavone@retrodev.com>
parents:
1102
diff
changeset
|
870 keyon(context->operators + op, context->channels + channel); |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
Michael Pavone <pavone@retrodev.com>
parents:
1102
diff
changeset
|
871 } else { |
4b893b02444e
Basic implementation of CSM mode that should handle documented edge cases. Dodesn't handle the weird undocumented edge cases I don't have a good understanding of yet though
Michael Pavone <pavone@retrodev.com>
parents:
1102
diff
changeset
|
872 //printf("Key Off for operator %d in channel %d\n", op, channel); |
1301
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
873 keyoff(context->operators + op); |
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
874 } |
362 | 875 } |
876 } | |
877 } | |
878 break; | |
879 } | |
880 case REG_DAC: | |
881 if (context->dac_enable) { | |
882 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
|
883 //printf("DAC Write %X(%d) @ %d\n", value, context->channels[5].output, context->current_cycle); |
362 | 884 } |
885 break; | |
886 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
|
887 //printf("DAC Enable: %X\n", value); |
362 | 888 context->dac_enable = value & 0x80; |
889 break; | |
890 } | |
891 } else if (context->selected_reg < 0xA0) { | |
892 //part | |
893 uint8_t op = context->selected_part ? (NUM_OPERATORS/2) : 0; | |
894 //channel in part | |
895 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
|
896 op += 4 * (context->selected_reg & 0x3) + ((context->selected_reg & 0xC) / 4); |
362 | 897 //printf("write targets operator %d (%d of channel %d)\n", op, op % 4, op / 4); |
898 ym_operator * operator = context->operators + op; | |
899 switch (context->selected_reg & 0xF0) | |
900 { | |
901 case REG_DETUNE_MULT: | |
902 operator->detune = value >> 4 & 0x7; | |
903 operator->multiple = value & 0xF; | |
904 break; | |
905 case REG_TOTAL_LEVEL: | |
906 operator->total_level = (value & 0x7F) << 5; | |
907 break; | |
908 case REG_ATTACK_KS: | |
376 | 909 operator->key_scaling = 3 - (value >> 6); |
362 | 910 operator->rates[PHASE_ATTACK] = value & 0x1F; |
911 break; | |
912 case REG_DECAY_AM: | |
913 //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
|
914 operator->am = value & 0x80; |
362 | 915 operator->rates[PHASE_DECAY] = value & 0x1F; |
916 break; | |
917 case REG_SUSTAIN_RATE: | |
918 operator->rates[PHASE_SUSTAIN] = value & 0x1F; | |
919 break; | |
920 case REG_S_LVL_R_RATE: | |
921 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
|
922 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
|
923 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
|
924 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
|
925 } |
362 | 926 break; |
1301
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
927 case REG_SSG_EG: |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
928 if (!(value & SSG_ENABLE)) { |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
929 value = 0; |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
930 } |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
931 if ((value ^ operator->ssg) & SSG_INVERT) { |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
932 operator->inverted ^= SSG_INVERT; |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
933 } |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
934 operator->ssg = value; |
babff81e4cfd
Initial implementation of YM2612 SSG-EG mode
Michael Pavone <pavone@retrodev.com>
parents:
1300
diff
changeset
|
935 break; |
362 | 936 } |
937 } | |
938 } else { | |
939 uint8_t channel = context->selected_reg & 0x3; | |
940 if (channel != 3) { | |
941 if (context->selected_part) { | |
942 channel += 3; | |
943 } | |
944 //printf("write targets channel %d\n", channel); | |
945 switch (context->selected_reg & 0xFC) | |
946 { | |
947 case REG_FNUM_LOW: | |
948 context->channels[channel].block = context->channels[channel].block_fnum_latch >> 3 & 0x7; | |
949 context->channels[channel].fnum = (context->channels[channel].block_fnum_latch & 0x7) << 8 | value; | |
950 context->channels[channel].keycode = context->channels[channel].block << 2 | fnum_to_keycode[context->channels[channel].fnum >> 7]; | |
951 break; | |
952 case REG_BLOCK_FNUM_H:{ | |
953 context->channels[channel].block_fnum_latch = value; | |
954 break; | |
955 } | |
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
956 case REG_FNUM_LOW_CH3: |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
957 if (channel < 3) { |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
958 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
|
959 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
|
960 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
|
961 } |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
962 break; |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
963 case REG_BLOCK_FN_CH3: |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
964 if (channel < 3) { |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
965 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
|
966 } |
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
967 break; |
362 | 968 case REG_ALG_FEEDBACK: |
969 context->channels[channel].algorithm = value & 0x7; | |
970 context->channels[channel].feedback = value >> 3 & 0x7; | |
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
971 //printf("Algorithm %d, feedback %d for channel %d\n", value & 0x7, value >> 3 & 0x7, channel); |
362 | 972 break; |
973 case REG_LR_AMS_PMS: | |
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
974 context->channels[channel].pms = (value & 0x7) * 32; |
362 | 975 context->channels[channel].ams = value >> 4 & 0x3; |
976 context->channels[channel].lr = value & 0xC0; | |
369
fc820ab1394b
Fix left/right enable default value
Mike Pavone <pavone@retrodev.com>
parents:
365
diff
changeset
|
977 //printf("Write of %X to LR_AMS_PMS reg for channel %d\n", value, channel); |
362 | 978 break; |
979 } | |
980 } | |
981 } | |
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
982 |
362 | 983 context->write_cycle = context->current_cycle; |
535
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
984 context->busy_cycles = context->selected_reg < 0xA0 ? BUSY_CYCLES_DATA_LOW : BUSY_CYCLES_DATA_HIGH; |
374 | 985 context->status |= 0x80; |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
986 } |
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
|
987 |
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
|
988 uint8_t ym_read_status(ym2612_context * context) |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
989 { |
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
|
990 return context->status; |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
991 } |
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
|
992 |
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
|
993 void ym_print_channel_info(ym2612_context *context, int channel) |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
994 { |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
995 ym_channel *chan = context->channels + channel; |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
996 printf("\n***Channel %d***\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
997 "Algorithm: %d\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
998 "Feedback: %d\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
999 "Pan: %s\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1000 "AMS: %d\n" |
845
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
diff
changeset
|
1001 "PMS: %d\n", |
739
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1002 channel+1, chan->algorithm, chan->feedback, |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1003 chan->lr == 0xC0 ? "LR" : chan->lr == 0x80 ? "L" : chan->lr == 0x40 ? "R" : "", |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1004 chan->ams, chan->pms); |
930
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1005 if (channel == 2) { |
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1006 printf( |
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1007 "Mode: %X: %s\n", |
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1008 context->ch3_mode, context->ch3_mode ? "special" : "normal"); |
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1009 } |
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
|
1010 for (int operator = channel * 4; operator < channel * 4+4; operator++) |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1011 { |
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
|
1012 int dispnum = operator - channel * 4 + 1; |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1013 if (dispnum == 2) { |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1014 dispnum = 3; |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1015 } else if (dispnum == 3) { |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1016 dispnum = 2; |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1017 } |
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
|
1018 ym_operator *op = context->operators + operator; |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1019 printf("\nOperator %d:\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1020 " Multiple: %d\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1021 " Detune: %d\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1022 " Total Level: %d\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1023 " Attack Rate: %d\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1024 " Key Scaling: %d\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1025 " Decay Rate: %d\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1026 " Sustain Level: %d\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1027 " Sustain Rate: %d\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1028 " Release Rate: %d\n" |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1029 " Amplitude Modulation %s\n", |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1030 dispnum, op->multiple, op->detune, op->total_level, |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1031 op->rates[PHASE_ATTACK], op->key_scaling, op->rates[PHASE_DECAY], |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1032 op->sustain_level, op->rates[PHASE_SUSTAIN], op->rates[PHASE_RELEASE], |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1033 op->am ? "On" : "Off"); |
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
1034 } |
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
|
1035 } |
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
|
1036 |
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
|
1037 void ym_print_timer_info(ym2612_context *context) |
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1038 { |
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1039 printf("***Timer A***\n" |
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1040 "Current Value: %d\n" |
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1041 "Load Value: %d\n" |
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1042 "Triggered: %s\n" |
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1043 "Enabled: %s\n\n", |
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1044 context->timer_a, |
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
1045 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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1046 context->status & BIT_STATUS_TIMERA ? "yes" : "no", |
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1047 context->timer_control & BIT_TIMERA_ENABLE ? "yes" : "no"); |
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1048 printf("***Timer B***\n" |
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1049 "Current Value: %d\n" |
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1050 "Load Value: %d\n" |
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1051 "Triggered: %s\n" |
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1052 "Enabled: %s\n\n", |
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1053 context->timer_b, |
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1054 context->timer_b_load, |
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1055 context->status & BIT_STATUS_TIMERB ? "yes" : "no", |
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1056 context->timer_control & BIT_TIMERB_ENABLE ? "yes" : "no"); |
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1057 } |
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1058 |
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1059 void ym_serialize(ym2612_context *context, serialize_buffer *buf) |
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1060 { |
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1061 save_buffer8(buf, context->part1_regs, YM_PART1_REGS); |
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1062 save_buffer8(buf, context->part2_regs, YM_PART2_REGS); |
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1063 for (int i = 0; i < NUM_OPERATORS; i++) |
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1064 { |
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1065 save_int32(buf, context->operators[i].phase_counter); |
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1066 save_int16(buf, context->operators[i].envelope); |
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1067 save_int16(buf, context->operators[i].output); |
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1068 save_int8(buf, context->operators[i].env_phase); |
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1069 save_int8(buf, context->operators[i].inverted); |
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1070 } |
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1071 for (int i = 0; i < NUM_CHANNELS; i++) |
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1072 { |
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1073 save_int16(buf, context->channels[i].output); |
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1074 save_int16(buf, context->channels[i].op1_old); |
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1075 //Due to the latching behavior, these need to be saved |
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1076 //even though duplicate info is probably in the regs array |
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1077 save_int8(buf, context->channels[i].block); |
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1078 save_int16(buf, context->channels[i].fnum); |
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1079 save_int8(buf, context->channels[i].keyon); |
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1080 } |
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1081 for (int i = 0; i < 3; i++) |
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1082 { |
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1083 //Due to the latching behavior, these need to be saved |
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1084 //even though duplicate info is probably in the regs array |
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1085 save_int8(buf, context->ch3_supp[i].block); |
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1086 save_int8(buf, context->ch3_supp[i].fnum); |
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1087 } |
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1088 save_int8(buf, context->timer_control); |
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1089 save_int16(buf, context->timer_a); |
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1090 save_int8(buf, context->timer_b); |
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1091 save_int8(buf, context->sub_timer_b); |
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1092 save_int16(buf, context->env_counter); |
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1093 save_int8(buf, context->current_op); |
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1094 save_int8(buf, context->current_env_op); |
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1095 save_int8(buf, context->lfo_counter); |
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1096 save_int8(buf, context->csm_keyon); |
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1097 save_int8(buf, context->status); |
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1098 save_int8(buf, context->selected_reg); |
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1099 save_int8(buf, context->selected_part); |
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1100 save_int32(buf, context->current_cycle); |
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1101 save_int32(buf, context->write_cycle); |
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1102 save_int32(buf, context->busy_cycles); |
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1103 } |
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1104 |
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1105 void ym_deserialize(deserialize_buffer *buf, void *vcontext) |
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1106 { |
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1107 ym2612_context *context = vcontext; |
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1108 uint8_t temp_regs[YM_PART1_REGS]; |
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1109 load_buffer8(buf, temp_regs, YM_PART1_REGS); |
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1110 context->selected_part = 0; |
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1111 for (int i = 0; i < YM_PART1_REGS; i++) |
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1112 { |
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1113 uint8_t reg = YM_PART1_START + i; |
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1114 if (reg == REG_TIME_CTRL) { |
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1115 context->ch3_mode = temp_regs[i] & 0xC0; |
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1116 } else if (reg != REG_FNUM_LOW && reg != REG_KEY_ONOFF) { |
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1117 context->selected_reg = reg; |
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1118 ym_data_write(context, temp_regs[i]); |
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1119 } |
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1120 } |
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1121 load_buffer8(buf, temp_regs, YM_PART2_REGS); |
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1122 context->selected_part = 1; |
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1123 for (int i = 0; i < YM_PART2_REGS; i++) |
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1124 { |
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1125 uint8_t reg = YM_PART2_START + i; |
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1126 if (reg != REG_FNUM_LOW) { |
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1127 context->selected_reg = reg; |
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1128 ym_data_write(context, temp_regs[i]); |
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1129 } |
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1130 } |
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1131 for (int i = 0; i < NUM_OPERATORS; i++) |
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1132 { |
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1133 context->operators[i].phase_counter = load_int32(buf); |
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1134 context->operators[i].envelope = load_int16(buf); |
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1135 context->operators[i].output = load_int16(buf); |
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1136 context->operators[i].env_phase = load_int8(buf); |
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1137 if (context->operators[i].env_phase > PHASE_RELEASE) { |
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1138 context->operators[i].env_phase = PHASE_RELEASE; |
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1139 } |
1450
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1140 context->operators[i].inverted = load_int8(buf) != 0 ? SSG_INVERT : 0; |
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1141 } |
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1142 for (int i = 0; i < NUM_CHANNELS; i++) |
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1143 { |
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1144 context->channels[i].output = load_int16(buf); |
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1145 context->channels[i].op1_old = load_int16(buf); |
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1146 context->channels[i].block = load_int8(buf); |
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|
1147 context->channels[i].fnum = load_int16(buf); |
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1148 context->channels[i].keycode = context->channels[i].block << 2 | fnum_to_keycode[context->channels[i].fnum >> 7]; |
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1149 context->channels[i].keyon = load_int8(buf); |
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1150 } |
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1151 for (int i = 0; i < 3; i++) |
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1152 { |
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1153 context->ch3_supp[i].block = load_int8(buf); |
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1154 context->ch3_supp[i].fnum = load_int8(buf); |
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1155 context->ch3_supp[i].keycode = context->ch3_supp[i].block << 2 | fnum_to_keycode[context->ch3_supp[i].fnum >> 7]; |
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1156 } |
1447
a094815b1168
Save and restore YM2612 timer control and keyon/off state in native save states
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1157 context->timer_control = load_int8(buf); |
1427
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1158 context->timer_a = load_int16(buf); |
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1159 context->timer_b = load_int8(buf); |
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1160 context->sub_timer_b = load_int8(buf); |
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1161 context->env_counter = load_int16(buf); |
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1162 context->current_op = load_int8(buf); |
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1163 if (context->current_op >= NUM_OPERATORS) { |
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1164 context->current_op = 0; |
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1165 } |
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1166 context->current_env_op = load_int8(buf); |
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1167 if (context->current_env_op >= NUM_OPERATORS) { |
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1168 context->current_env_op = 0; |
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1169 } |
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1170 context->lfo_counter = load_int8(buf); |
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1171 context->csm_keyon = load_int8(buf); |
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1172 context->status = load_int8(buf); |
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1173 context->selected_reg = load_int8(buf); |
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1174 context->selected_part = load_int8(buf); |
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1175 context->current_cycle = load_int32(buf); |
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1176 context->write_cycle = load_int32(buf); |
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1177 context->busy_cycles = load_int32(buf); |
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1178 } |