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annotate ym2612.c @ 871:f364f4f22f8f
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| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Fri, 06 Nov 2015 19:47:58 -0800 |
| parents | 46bb673eed4e |
| children | 252dfd29831d |
| 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 enum { |
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43 PHASE_ATTACK, |
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44 PHASE_DECAY, |
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45 PHASE_SUSTAIN, |
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46 PHASE_RELEASE |
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47 }; |
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48 |
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49 uint8_t did_tbl_init = 0; |
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50 //According to Nemesis, real hardware only uses a 256 entry quarter sine table; however, |
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51 //memory is cheap so using a half sine table will probably save some cycles |
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52 //a full sine table would be nice, but negative numbers don't get along with log2 |
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53 #define SINE_TABLE_SIZE 512 |
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54 uint16_t sine_table[SINE_TABLE_SIZE]; |
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55 //Similar deal here with the power table for log -> linear conversion |
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56 //According to Nemesis, real hardware only uses a 256 entry table for the fractional part |
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57 //and uses the whole part as a shift amount. |
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58 #define POW_TABLE_SIZE (1 << 13) |
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59 uint16_t pow_table[POW_TABLE_SIZE]; |
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60 |
| 362 | 61 uint16_t rate_table_base[] = { |
| 62 //main portion | |
| 63 0,1,0,1,0,1,0,1, | |
| 64 0,1,0,1,1,1,0,1, | |
| 65 0,1,1,1,0,1,1,1, | |
| 66 0,1,1,1,1,1,1,1, | |
| 67 //top end | |
| 68 1,1,1,1,1,1,1,1, | |
| 69 1,1,1,2,1,1,1,2, | |
| 70 1,2,1,2,1,2,1,2, | |
| 71 1,2,2,2,1,2,2,2, | |
| 72 }; | |
| 73 | |
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74 uint16_t rate_table[64*8]; |
| 362 | 75 |
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76 uint8_t lfo_timer_values[] = {108, 77, 71, 67, 62, 44, 8, 5}; |
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77 uint8_t lfo_pm_base[][8] = { |
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78 {0, 0, 0, 0, 0, 0, 0, 0}, |
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79 {0, 0, 0, 0, 4, 4, 4, 4}, |
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80 {0, 0, 0, 4, 4, 4, 8, 8}, |
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81 {0, 0, 4, 4, 8, 8, 0xc, 0xc}, |
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82 {0, 0, 4, 8, 8, 8, 0xc,0x10}, |
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83 {0, 0, 8, 0xc,0x10,0x10,0x14,0x18}, |
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84 {0, 0,0x10,0x18,0x20,0x20,0x28,0x30}, |
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85 {0, 0,0x20,0x30,0x40,0x40,0x50,0x60} |
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86 }; |
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87 int16_t lfo_pm_table[128 * 32 * 8]; |
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88 |
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89 uint16_t ams_shift[] = {8, 3, 1, 0}; |
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90 |
| 362 | 91 #define MAX_ENVELOPE 0xFFC |
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92 #define YM_DIVIDER 2 |
| 374 | 93 #define CYCLE_NEVER 0xFFFFFFFF |
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94 |
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95 uint16_t round_fixed_point(double value, int dec_bits) |
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96 { |
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97 return value * (1 << dec_bits) + 0.5; |
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98 } |
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99 |
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100 FILE * debug_file = NULL; |
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101 uint32_t first_key_on=0; |
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102 |
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103 ym2612_context * log_context = NULL; |
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104 |
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105 void ym_finalize_log() |
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106 { |
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107 for (int i = 0; i < NUM_CHANNELS; i++) { |
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108 if (log_context->channels[i].logfile) { |
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109 wave_finalize(log_context->channels[i].logfile); |
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110 } |
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111 } |
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112 } |
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113 #define BUFFER_INC_RES 1000000000UL |
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114 |
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115 void ym_adjust_master_clock(ym2612_context * context, uint32_t master_clock) |
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116 { |
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117 uint64_t old_inc = context->buffer_inc; |
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118 context->buffer_inc = ((BUFFER_INC_RES * (uint64_t)context->sample_rate) / (uint64_t)master_clock) * (uint64_t)context->clock_inc; |
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119 } |
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120 |
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121 #ifdef __ANDROID__ |
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122 #define log2(x) (log(x)/log(2)) |
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123 #endif |
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124 |
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125 void ym_init(ym2612_context * context, uint32_t sample_rate, uint32_t master_clock, uint32_t clock_div, uint32_t sample_limit, uint32_t options) |
|
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126 { |
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127 dfopen(debug_file, "ym_debug.txt", "w"); |
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128 memset(context, 0, sizeof(*context)); |
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129 context->audio_buffer = malloc(sizeof(*context->audio_buffer) * sample_limit*2); |
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130 context->back_buffer = malloc(sizeof(*context->audio_buffer) * sample_limit*2); |
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131 context->sample_rate = sample_rate; |
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132 context->clock_inc = clock_div * 6; |
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133 ym_adjust_master_clock(context, master_clock); |
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134 |
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135 context->sample_limit = sample_limit*2; |
| 374 | 136 context->write_cycle = CYCLE_NEVER; |
| 362 | 137 for (int i = 0; i < NUM_OPERATORS; i++) { |
| 138 context->operators[i].envelope = MAX_ENVELOPE; | |
| 139 context->operators[i].env_phase = PHASE_RELEASE; | |
| 140 } | |
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141 //some games seem to expect that the LR flags start out as 1 |
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142 for (int i = 0; i < NUM_CHANNELS; i++) { |
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143 context->channels[i].lr = 0xC0; |
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144 if (options & YM_OPT_WAVE_LOG) { |
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145 char fname[64]; |
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146 sprintf(fname, "ym_channel_%d.wav", i); |
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147 FILE * f = context->channels[i].logfile = fopen(fname, "wb"); |
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148 if (!f) { |
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149 fprintf(stderr, "Failed to open WAVE log file %s for writing\n", fname); |
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150 continue; |
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151 } |
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152 if (!wave_init(f, sample_rate, 16, 1)) { |
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153 fclose(f); |
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154 context->channels[i].logfile = NULL; |
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155 } |
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156 } |
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157 } |
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158 if (options & YM_OPT_WAVE_LOG) { |
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159 log_context = context; |
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160 atexit(ym_finalize_log); |
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161 } |
|
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162 if (!did_tbl_init) { |
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163 //populate sine table |
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164 for (int32_t i = 0; i < 512; i++) { |
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165 double sine = sin( ((double)(i*2+1) / SINE_TABLE_SIZE) * M_PI_2 ); |
|
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166 |
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167 //table stores 4.8 fixed pointed representation of the base 2 log |
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168 sine_table[i] = round_fixed_point(-log2(sine), 8); |
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169 } |
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170 //populate power table |
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171 for (int32_t i = 0; i < POW_TABLE_SIZE; i++) { |
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172 double linear = pow(2, -((double)((i & 0xFF)+1) / 256.0)); |
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173 int32_t tmp = round_fixed_point(linear, 11); |
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174 int32_t shift = (i >> 8) - 2; |
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175 if (shift < 0) { |
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176 tmp <<= 0-shift; |
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177 } else { |
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178 tmp >>= shift; |
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179 } |
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180 pow_table[i] = tmp; |
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181 } |
| 362 | 182 //populate envelope generator rate table, from small base table |
| 183 for (int rate = 0; rate < 64; rate++) { | |
|
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184 for (int cycle = 0; cycle < 8; cycle++) { |
| 362 | 185 uint16_t value; |
|
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186 if (rate < 2) { |
| 362 | 187 value = 0; |
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188 } else if (rate >= 60) { |
| 362 | 189 value = 8; |
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190 } else if (rate < 8) { |
|
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191 value = rate_table_base[((rate & 6) == 6 ? 16 : 0) + cycle]; |
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192 } else if (rate < 48) { |
| 362 | 193 value = rate_table_base[(rate & 0x3) * 8 + cycle]; |
| 194 } else { | |
|
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195 value = rate_table_base[32 + (rate & 0x3) * 8 + cycle] << ((rate - 48) >> 2); |
| 362 | 196 } |
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197 rate_table[rate * 8 + cycle] = value; |
| 362 | 198 } |
| 199 } | |
|
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200 //populate LFO PM table from small base table |
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201 //seems like there must be a better way to derive this |
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202 for (int freq = 0; freq < 128; freq++) { |
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203 for (int pms = 0; pms < 8; pms++) { |
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204 for (int step = 0; step < 32; step++) { |
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205 int16_t value = 0; |
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206 for (int bit = 0x40, shift = 0; bit > 0; bit >>= 1, shift++) { |
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207 if (freq & bit) { |
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208 value += lfo_pm_base[pms][(step & 0x8) ? 7-step & 7 : step & 7] >> shift; |
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209 } |
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210 } |
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211 if (step & 0x10) { |
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212 value = -value; |
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213 } |
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214 lfo_pm_table[freq * 256 + pms * 32 + step] = value; |
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215 } |
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216 } |
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217 } |
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218 } |
|
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219 } |
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220 |
|
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221 #define YM_VOLUME_MULTIPLIER 2 |
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222 #define YM_VOLUME_DIVIDER 3 |
|
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223 #define YM_MOD_SHIFT 1 |
|
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224 |
| 403 | 225 #define TIMER_A_MAX 1023 |
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226 #define TIMER_B_MAX 255 |
| 403 | 227 |
|
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228 void ym_run(ym2612_context * context, uint32_t to_cycle) |
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229 { |
| 362 | 230 //printf("Running YM2612 from cycle %d to cycle %d\n", context->current_cycle, to_cycle); |
| 231 //TODO: Fix channel update order OR remap channels in register write | |
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232 for (; context->current_cycle < to_cycle; context->current_cycle += context->clock_inc) { |
|
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233 //Update timers at beginning of 144 cycle period |
| 403 | 234 if (!context->current_op) { |
| 235 if (context->timer_control & BIT_TIMERA_ENABLE) { | |
| 236 if (context->timer_a != TIMER_A_MAX) { | |
| 237 context->timer_a++; | |
| 238 } else { | |
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239 if (context->timer_control & BIT_TIMERA_LOAD) { |
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240 context->timer_control &= ~BIT_TIMERA_LOAD; |
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241 } else if (context->timer_control & BIT_TIMERA_OVEREN) { |
| 403 | 242 context->status |= BIT_STATUS_TIMERA; |
| 243 } | |
| 244 context->timer_a = context->timer_a_load; | |
|
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245 } |
|
288
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246 } |
|
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247 if (!context->sub_timer_b) { |
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248 if (context->timer_control & BIT_TIMERB_ENABLE) { |
|
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249 if (context->timer_b != TIMER_B_MAX) { |
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250 context->timer_b++; |
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251 } else { |
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252 if (context->timer_control & BIT_TIMERB_LOAD) { |
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253 context->timer_control &= ~BIT_TIMERB_LOAD; |
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254 } else if (context->timer_control & BIT_TIMERB_OVEREN) { |
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255 context->status |= BIT_STATUS_TIMERB; |
|
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256 } |
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257 context->timer_b = context->timer_b_load; |
|
359
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258 } |
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259 } |
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260 } |
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261 context->sub_timer_b += 0x10; |
|
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262 //Update LFO |
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263 if (context->lfo_enable) { |
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264 if (context->lfo_counter) { |
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265 context->lfo_counter--; |
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266 } else { |
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267 context->lfo_counter = lfo_timer_values[context->lfo_freq]; |
|
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268 context->lfo_am_step += 2; |
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269 context->lfo_am_step &= 0xFE; |
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270 context->lfo_pm_step = context->lfo_am_step / 8; |
|
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271 } |
|
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272 } |
|
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273 } |
|
359
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274 //Update Envelope Generator |
|
364
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275 if (!(context->current_op % 3)) { |
|
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276 uint32_t env_cyc = context->env_counter; |
|
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277 uint32_t op = context->current_env_op; |
| 362 | 278 ym_operator * operator = context->operators + op; |
| 279 ym_channel * channel = context->channels + op/4; | |
|
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280 uint8_t rate; |
| 362 | 281 for(;;) { |
| 282 rate = operator->rates[operator->env_phase]; | |
| 283 if (rate) { | |
| 284 uint8_t ks = channel->keycode >> operator->key_scaling;; | |
| 285 rate = rate*2 + ks; | |
| 286 if (rate > 63) { | |
| 287 rate = 63; | |
| 288 } | |
| 289 } | |
| 290 //Deal with "infinite" rates | |
|
370
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291 //According to Nemesis this should be handled in key-on instead |
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292 if (rate >= 62 && operator->env_phase == PHASE_ATTACK) { |
|
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293 operator->env_phase = PHASE_DECAY; |
|
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294 operator->envelope = 0; |
| 362 | 295 } else { |
| 296 break; | |
| 297 } | |
| 298 } | |
| 299 uint32_t cycle_shift = rate < 0x30 ? ((0x2F - rate) >> 2) : 0; | |
|
370
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300 if (first_key_on) { |
|
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301 dfprintf(debug_file, "Operator: %d, env rate: %d (2*%d+%d), env_cyc: %d, cycle_shift: %d, env_cyc & ((1 << cycle_shift) - 1): %d\n", op, rate, operator->rates[operator->env_phase], channel->keycode >> operator->key_scaling,env_cyc, cycle_shift, env_cyc & ((1 << cycle_shift) - 1)); |
|
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302 } |
| 362 | 303 if (!(env_cyc & ((1 << cycle_shift) - 1))) { |
| 304 uint32_t update_cycle = env_cyc >> cycle_shift & 0x7; | |
|
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305 uint16_t envelope_inc = rate_table[rate * 8 + update_cycle]; |
| 362 | 306 if (operator->env_phase == PHASE_ATTACK) { |
| 307 //this can probably be optimized to a single shift rather than a multiply + shift | |
|
370
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308 if (first_key_on) { |
|
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309 dfprintf(debug_file, "Changing op %d envelope %d by %d(%d * %d) in attack phase\n", op, operator->envelope, (~operator->envelope * envelope_inc) >> 4, ~operator->envelope, envelope_inc); |
|
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310 } |
|
513
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311 uint16_t old_env = operator->envelope; |
|
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312 operator->envelope += ((~operator->envelope * envelope_inc) >> 4) & 0xFFFFFFFC; |
|
513
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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
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parents:
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|
313 if (operator->envelope > old_env) { |
|
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314 //Handle overflow |
|
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315 operator->envelope = 0; |
|
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316 } |
|
370
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317 if (!operator->envelope) { |
| 362 | 318 operator->env_phase = PHASE_DECAY; |
| 319 } | |
| 320 } else { | |
|
370
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321 if (first_key_on) { |
|
448
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322 dfprintf(debug_file, "Changing op %d envelope %d by %d in %s phase\n", op, operator->envelope, envelope_inc, |
|
370
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323 operator->env_phase == PHASE_SUSTAIN ? "sustain" : (operator->env_phase == PHASE_DECAY ? "decay": "release")); |
|
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324 } |
|
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325 //envelope value is 10-bits, but it will be used as a 4.8 value |
|
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326 operator->envelope += envelope_inc << 2; |
| 362 | 327 //clamp to max attenuation value |
| 328 if (operator->envelope > MAX_ENVELOPE) { | |
| 329 operator->envelope = MAX_ENVELOPE; | |
| 330 } | |
| 331 if (operator->env_phase == PHASE_DECAY && operator->envelope >= operator->sustain_level) { | |
|
370
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332 //operator->envelope = operator->sustain_level; |
| 362 | 333 operator->env_phase = PHASE_SUSTAIN; |
| 334 } | |
| 335 } | |
|
364
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336 } |
|
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337 context->current_env_op++; |
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338 if (context->current_env_op == NUM_OPERATORS) { |
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339 context->current_env_op = 0; |
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340 context->env_counter++; |
| 362 | 341 } |
| 342 } | |
|
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343 |
| 362 | 344 //Update Phase Generator |
|
364
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345 uint32_t channel = context->current_op / 4; |
| 362 | 346 if (channel != 5 || !context->dac_enable) { |
|
364
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|
347 uint32_t op = context->current_op; |
| 362 | 348 //printf("updating operator %d of channel %d\n", op, channel); |
| 349 ym_operator * operator = context->operators + op; | |
| 350 ym_channel * chan = context->channels + channel; | |
|
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Fix output of algorithm 4 and make some other minor YM2612 core improvements
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351 uint16_t phase = operator->phase_counter >> 10 & 0x3FF; |
| 362 | 352 operator->phase_counter += operator->phase_inc; |
|
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353 if (chan->pms) { |
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354 //not entirely sure this will get the precision correct, but I'd like to avoid recalculating phase |
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355 //increment every update when LFO phase modulation is enabled |
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356 int16_t lfo_mod = lfo_pm_table[(chan->fnum & 0x7F0) * 16 + chan->pms + context->lfo_pm_step]; |
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357 if (operator->multiple) { |
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358 lfo_mod *= operator->multiple; |
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359 } else { |
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360 lfo_mod >>= 1; |
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361 } |
|
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362 operator->phase_counter += lfo_mod; |
|
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363 } |
|
371
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364 int16_t mod = 0; |
| 362 | 365 switch (op % 4) |
|
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366 { |
| 362 | 367 case 0://Operator 1 |
| 377 | 368 if (chan->feedback) { |
|
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369 mod = (chan->op1_old + operator->output) >> (10-chan->feedback); |
| 377 | 370 } |
|
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371 break; |
| 362 | 372 case 1://Operator 3 |
| 373 switch(chan->algorithm) | |
| 374 { | |
| 375 case 0: | |
| 376 case 2: | |
| 377 //modulate by operator 2 | |
|
379
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Make shift value of operator output to modulation input a define
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378
diff
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|
378 mod = context->operators[op+1].output >> YM_MOD_SHIFT; |
| 362 | 379 break; |
| 380 case 1: | |
| 381 //modulate by operator 1+2 | |
|
379
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Make shift value of operator output to modulation input a define
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parents:
378
diff
changeset
|
382 mod = (context->operators[op-1].output + context->operators[op+1].output) >> YM_MOD_SHIFT; |
| 362 | 383 break; |
| 384 case 5: | |
| 385 //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:
378
diff
changeset
|
386 mod = context->operators[op-1].output >> YM_MOD_SHIFT; |
| 362 | 387 } |
| 388 break; | |
| 389 case 2://Operator 2 | |
|
406
b1bc1947d949
Fix modulation condition for operator 2
Mike Pavone <pavone@retrodev.com>
parents:
403
diff
changeset
|
390 if (chan->algorithm != 1 && chan->algorithm != 2 && chan->algorithm != 7) { |
| 362 | 391 //modulate by Operator 1 |
|
379
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Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
392 mod = context->operators[op-2].output >> YM_MOD_SHIFT; |
| 362 | 393 } |
|
359
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parents:
288
diff
changeset
|
394 break; |
| 362 | 395 case 3://Operator 4 |
| 396 switch(chan->algorithm) | |
| 397 { | |
| 398 case 0: | |
| 399 case 1: | |
| 400 case 4: | |
| 401 //modulate by operator 3 | |
|
379
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Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
402 mod = context->operators[op-2].output >> YM_MOD_SHIFT; |
| 362 | 403 break; |
| 404 case 2: | |
| 405 //modulate by operator 1+3 | |
|
379
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Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
406 mod = (context->operators[op-3].output + context->operators[op-2].output) >> YM_MOD_SHIFT; |
| 362 | 407 break; |
| 408 case 3: | |
| 409 //modulate by operator 2+3 | |
|
379
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Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
410 mod = (context->operators[op-1].output + context->operators[op-2].output) >> YM_MOD_SHIFT; |
| 362 | 411 break; |
| 412 case 5: | |
| 413 //modulate by operator 1 | |
|
379
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Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
414 mod = context->operators[op-3].output >> YM_MOD_SHIFT; |
| 362 | 415 break; |
| 416 } | |
|
359
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parents:
288
diff
changeset
|
417 break; |
|
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parents:
288
diff
changeset
|
418 } |
|
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
|
419 uint16_t env = operator->envelope + operator->total_level; |
|
740
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
420 if (operator->am) { |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
421 uint16_t base_am = (context->lfo_am_step & 0x80 ? context->lfo_am_step : ~context->lfo_am_step) & 0x7E; |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
422 env += base_am >> ams_shift[chan->ams]; |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
423 } |
|
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
|
424 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
|
425 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
|
426 } |
|
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
|
427 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
|
428 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
|
429 } |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
430 //if ((channel != 0 && channel != 4) || chan->algorithm != 5) { |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
431 phase += mod; |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
432 //} |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
433 |
|
371
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
434 int16_t output = pow_table[sine_table[phase & 0x1FF] + env]; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
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diff
changeset
|
435 if (phase & 0x200) { |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
436 output = -output; |
|
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YM2612 WIP snapshot before register refactor
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parents:
288
diff
changeset
|
437 } |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
438 if (op % 4 == 0) { |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
439 chan->op1_old = operator->output; |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
440 } |
| 362 | 441 operator->output = output; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
442 //Update the channel output if we've updated all operators |
|
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parents:
288
diff
changeset
|
443 if (op % 4 == 3) { |
| 362 | 444 if (chan->algorithm < 4) { |
| 445 chan->output = operator->output; | |
| 446 } 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
|
447 chan->output = operator->output + context->operators[channel * 4 + 2].output; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
448 } else { |
|
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Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
449 output = 0; |
| 362 | 450 for (uint32_t op = ((chan->algorithm == 7) ? 0 : 1) + channel*4; op < (channel+1)*4; op++) { |
| 451 output += context->operators[op].output; | |
|
359
cc39629e8d06
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parents:
288
diff
changeset
|
452 } |
| 362 | 453 chan->output = output; |
|
359
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parents:
288
diff
changeset
|
454 } |
|
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
|
455 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
|
456 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
|
457 if (value & 0x2000) { |
|
0f8a759f1ff4
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Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
458 value |= 0xC000; |
|
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
459 } |
|
522
6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
Michael Pavone <pavone@retrodev.com>
parents:
521
diff
changeset
|
460 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
|
461 } |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
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parents:
288
diff
changeset
|
462 } |
| 362 | 463 //puts("operator update done"); |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
464 } |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
465 context->current_op++; |
|
380
1c8d74f2ab0b
Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents:
379
diff
changeset
|
466 context->buffer_fraction += context->buffer_inc; |
|
396
09328dbe6700
Fix output of algorithm 4 and make some other minor YM2612 core improvements
Mike Pavone <pavone@retrodev.com>
parents:
386
diff
changeset
|
467 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
|
468 context->current_op = 0; |
|
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
469 } |
|
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
|
470 if (context->buffer_fraction > BUFFER_INC_RES) { |
|
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
471 context->buffer_fraction -= BUFFER_INC_RES; |
|
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
472 context->audio_buffer[context->buffer_pos] = 0; |
|
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
473 context->audio_buffer[context->buffer_pos + 1] = 0; |
|
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
474 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
|
475 int16_t value = context->channels[i].output; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
476 if (value > 0x1FE0) { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
477 value = 0x1FE0; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
478 } else if (value < -0x1FF0) { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
479 value = -0x1FF0; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
480 } else { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
481 value &= 0x3FE0; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
482 if (value & 0x2000) { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
483 value |= 0xC000; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
484 } |
|
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
|
485 } |
|
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
|
486 if (context->channels[i].logfile) { |
|
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
487 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
|
488 } |
|
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
|
489 if (context->channels[i].lr & 0x80) { |
|
522
6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
Michael Pavone <pavone@retrodev.com>
parents:
521
diff
changeset
|
490 context->audio_buffer[context->buffer_pos] += (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER; |
|
380
1c8d74f2ab0b
Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
parents:
379
diff
changeset
|
491 } |
|
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
|
492 if (context->channels[i].lr & 0x40) { |
|
522
6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
Michael Pavone <pavone@retrodev.com>
parents:
521
diff
changeset
|
493 context->audio_buffer[context->buffer_pos+1] += (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER; |
|
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
494 } |
|
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
|
495 } |
|
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
|
496 context->buffer_pos += 2; |
|
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
497 if (context->buffer_pos == context->sample_limit) { |
|
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
483
diff
changeset
|
498 if (!headless) { |
|
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
483
diff
changeset
|
499 render_wait_ym(context); |
|
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
483
diff
changeset
|
500 } |
|
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
|
501 } |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
502 } |
|
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
|
503 } |
|
535
aaa77e351c24
Better emulation of the YM-2612 busy flag
Mike Pavone <pavone@retrodev.com>
parents:
532
diff
changeset
|
504 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
|
505 context->status &= 0x7F; |
| 374 | 506 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
|
507 } |
| 362 | 508 //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
|
509 } |
|
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
|
510 |
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511 void ym_address_write_part1(ym2612_context * context, uint8_t address) |
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512 { |
|
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513 //printf("address_write_part1: %X\n", address); |
| 362 | 514 context->selected_reg = address; |
| 515 context->selected_part = 0; | |
|
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Better emulation of the YM-2612 busy flag
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516 context->write_cycle = context->current_cycle; |
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517 context->busy_cycles = BUSY_CYCLES_ADDRESS; |
|
650
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diff
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518 context->status |= 0x80; |
|
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519 } |
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changeset
|
520 |
|
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521 void ym_address_write_part2(ym2612_context * context, uint8_t address) |
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522 { |
|
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523 //printf("address_write_part2: %X\n", address); |
| 362 | 524 context->selected_reg = address; |
| 525 context->selected_part = 1; | |
|
535
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526 context->write_cycle = context->current_cycle; |
|
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532
diff
changeset
|
527 context->busy_cycles = BUSY_CYCLES_ADDRESS; |
|
650
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Set the busy flag after a YM-2612 address write
Michael Pavone <pavone@retrodev.com>
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535
diff
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|
528 context->status |= 0x80; |
| 362 | 529 } |
| 530 | |
| 531 uint8_t fnum_to_keycode[] = { | |
| 532 //F11 = 0 | |
| 533 0,0,0,0,0,0,0,1, | |
| 534 //F11 = 1 | |
| 535 2,3,3,3,3,3,3,3 | |
| 536 }; | |
| 537 | |
| 538 //table courtesy of Nemesis | |
| 539 uint32_t detune_table[][4] = { | |
| 540 {0, 0, 1, 2}, //0 (0x00) | |
| 541 {0, 0, 1, 2}, //1 (0x01) | |
| 542 {0, 0, 1, 2}, //2 (0x02) | |
| 543 {0, 0, 1, 2}, //3 (0x03) | |
| 544 {0, 1, 2, 2}, //4 (0x04) | |
| 545 {0, 1, 2, 3}, //5 (0x05) | |
| 546 {0, 1, 2, 3}, //6 (0x06) | |
| 547 {0, 1, 2, 3}, //7 (0x07) | |
| 548 {0, 1, 2, 4}, //8 (0x08) | |
| 549 {0, 1, 3, 4}, //9 (0x09) | |
| 550 {0, 1, 3, 4}, //10 (0x0A) | |
| 551 {0, 1, 3, 5}, //11 (0x0B) | |
| 552 {0, 2, 4, 5}, //12 (0x0C) | |
| 553 {0, 2, 4, 6}, //13 (0x0D) | |
| 554 {0, 2, 4, 6}, //14 (0x0E) | |
| 555 {0, 2, 5, 7}, //15 (0x0F) | |
| 556 {0, 2, 5, 8}, //16 (0x10) | |
| 557 {0, 3, 6, 8}, //17 (0x11) | |
| 558 {0, 3, 6, 9}, //18 (0x12) | |
| 559 {0, 3, 7,10}, //19 (0x13) | |
| 560 {0, 4, 8,11}, //20 (0x14) | |
| 561 {0, 4, 8,12}, //21 (0x15) | |
| 562 {0, 4, 9,13}, //22 (0x16) | |
| 563 {0, 5,10,14}, //23 (0x17) | |
| 564 {0, 5,11,16}, //24 (0x18) | |
| 565 {0, 6,12,17}, //25 (0x19) | |
| 566 {0, 6,13,19}, //26 (0x1A) | |
| 567 {0, 7,14,20}, //27 (0x1B) | |
| 568 {0, 8,16,22}, //28 (0x1C) | |
| 569 {0, 8,16,22}, //29 (0x1D) | |
| 570 {0, 8,16,22}, //30 (0x1E) | |
| 571 {0, 8,16,22} | |
| 572 }; //31 (0x1F) | |
| 573 | |
| 574 void ym_update_phase_inc(ym2612_context * context, ym_operator * operator, uint32_t op) | |
| 575 { | |
| 576 uint32_t chan_num = op / 4; | |
| 577 //printf("ym_update_phase_inc | channel: %d, op: %d\n", chan_num, op); | |
| 578 //base frequency | |
| 579 ym_channel * channel = context->channels + chan_num; | |
|
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580 uint32_t inc, detune; |
|
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Initial implementation of channel 3 special mode
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581 if (chan_num == 2 && context->ch3_mode && (op < (2*4 + 3))) { |
|
738
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diff
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582 //supplemental fnum registers are in a different order than normal slot paramters |
|
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Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
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diff
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583 int index = (op-2*4) ^ 2; |
|
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Fix register to operator mapping for channel 3 special mode
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650
diff
changeset
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584 inc = context->ch3_supp[index].fnum; |
|
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Fix register to operator mapping for channel 3 special mode
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diff
changeset
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585 if (!context->ch3_supp[index].block) { |
|
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586 inc >>= 1; |
|
72933100c55c
Initial implementation of channel 3 special mode
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|
587 } else { |
|
738
8972378e314f
Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
parents:
650
diff
changeset
|
588 inc <<= (context->ch3_supp[index].block-1); |
|
383
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Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
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diff
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|
589 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
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382
diff
changeset
|
590 //detune |
|
738
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Fix register to operator mapping for channel 3 special mode
Michael Pavone <pavone@retrodev.com>
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650
diff
changeset
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591 detune = detune_table[context->ch3_supp[index].keycode][operator->detune & 0x3]; |
|
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Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
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592 } else { |
|
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593 inc = channel->fnum; |
|
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diff
changeset
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594 if (!channel->block) { |
|
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Mike Pavone <pavone@retrodev.com>
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diff
changeset
|
595 inc >>= 1; |
|
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Mike Pavone <pavone@retrodev.com>
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|
596 } else { |
|
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Initial implementation of channel 3 special mode
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|
597 inc <<= (channel->block-1); |
|
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Initial implementation of channel 3 special mode
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|
598 } |
|
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Initial implementation of channel 3 special mode
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|
599 //detune |
|
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|
600 detune = detune_table[channel->keycode][operator->detune & 0x3]; |
|
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601 } |
|
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>
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738
diff
changeset
|
602 if (operator->detune & 0x4) { |
| 362 | 603 inc -= detune; |
| 604 //this can underflow, mask to 17-bit result | |
| 605 inc &= 0x1FFFF; | |
| 606 } else { | |
| 607 inc += detune; | |
| 608 } | |
| 609 //multiple | |
| 610 if (operator->multiple) { | |
| 611 inc *= operator->multiple; | |
|
739
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Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
612 inc &= 0xFFFFF; |
| 362 | 613 } else { |
| 614 //0.5 | |
| 615 inc >>= 1; | |
|
288
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Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
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diff
changeset
|
616 } |
|
365
3ba3b6656fff
Actually save the shifted phase inc after applying the block shift
Mike Pavone <pavone@retrodev.com>
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364
diff
changeset
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617 //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); |
|
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362
diff
changeset
|
618 operator->phase_inc = inc; |
|
288
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
619 } |
|
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
|
620 |
|
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
|
621 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
|
622 { |
|
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
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diff
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623 if (context->selected_reg >= YM_REG_END) { |
| 362 | 624 return; |
|
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Mike Pavone <pavone@retrodev.com>
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changeset
|
625 } |
|
451
b7c3b2d22858
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parents:
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diff
changeset
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626 if (context->selected_part) { |
|
b7c3b2d22858
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diff
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627 if (context->selected_reg < YM_PART2_START) { |
|
b7c3b2d22858
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diff
changeset
|
628 return; |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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parents:
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diff
changeset
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629 } |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
changeset
|
630 context->part2_regs[context->selected_reg - YM_PART2_START] = value; |
|
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631 } else { |
|
b7c3b2d22858
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parents:
448
diff
changeset
|
632 if (context->selected_reg < YM_PART1_START) { |
|
b7c3b2d22858
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parents:
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diff
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633 return; |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
448
diff
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|
634 } |
|
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
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448
diff
changeset
|
635 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
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|
636 } |
|
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
|
637 dfprintf(debug_file, "write of %X to reg %X in part %d\n", value, context->selected_reg, context->selected_part+1); |
| 362 | 638 if (context->selected_reg < 0x30) { |
| 639 //Shared regs | |
| 640 switch (context->selected_reg) | |
| 641 { | |
|
411
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Initial stab at LFO phase modulation
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diff
changeset
|
642 //TODO: Test reg |
|
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Initial stab at LFO phase modulation
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diff
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|
643 case REG_LFO: |
|
532
666210adf87b
Comment out LFO debug printf
Mike Pavone <pavone@retrodev.com>
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527
diff
changeset
|
644 /*if ((value & 0x8) && !context->lfo_enable) { |
|
411
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Initial stab at LFO phase modulation
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parents:
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diff
changeset
|
645 printf("LFO Enabled, Freq: %d\n", value & 0x7); |
|
532
666210adf87b
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Mike Pavone <pavone@retrodev.com>
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527
diff
changeset
|
646 }*/ |
|
411
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Initial stab at LFO phase modulation
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407
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changeset
|
647 context->lfo_enable = value & 0x8; |
|
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Initial stab at LFO phase modulation
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diff
changeset
|
648 if (!context->lfo_enable) { |
|
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Initial stab at LFO phase modulation
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diff
changeset
|
649 context->lfo_am_step = context->lfo_pm_step = 0; |
|
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Initial stab at LFO phase modulation
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650 } |
|
baf4688901f2
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changeset
|
651 context->lfo_freq = value & 0x7; |
|
448
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|
652 |
|
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653 break; |
| 362 | 654 case REG_TIMERA_HIGH: |
| 655 context->timer_a_load &= 0x3; | |
| 656 context->timer_a_load |= value << 2; | |
| 657 break; | |
| 658 case REG_TIMERA_LOW: | |
| 659 context->timer_a_load &= 0xFFFC; | |
| 660 context->timer_a_load |= value & 0x3; | |
| 661 break; | |
| 662 case REG_TIMERB: | |
|
845
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Michael Pavone <pavone@retrodev.com>
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diff
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|
663 context->timer_b_load = value; |
| 362 | 664 break; |
|
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|
665 case REG_TIME_CTRL: { |
| 403 | 666 if (value & BIT_TIMERA_ENABLE && !(context->timer_control & BIT_TIMERA_ENABLE)) { |
|
845
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Michael Pavone <pavone@retrodev.com>
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740
diff
changeset
|
667 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>
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740
diff
changeset
|
668 context->timer_control |= BIT_TIMERA_LOAD; |
| 403 | 669 } |
| 670 if (value & BIT_TIMERB_ENABLE && !(context->timer_control & BIT_TIMERB_ENABLE)) { | |
|
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>
parents:
740
diff
changeset
|
671 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
|
672 context->timer_control |= BIT_TIMERB_LOAD; |
| 403 | 673 } |
|
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
|
674 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
|
675 context->timer_control |= value & 0xF; |
| 403 | 676 if (value & BIT_TIMERA_RESET) { |
| 677 context->status &= ~BIT_STATUS_TIMERA; | |
| 678 } | |
| 679 if (value & BIT_TIMERB_RESET) { | |
| 680 context->status &= ~BIT_STATUS_TIMERB; | |
| 681 } | |
|
383
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382
diff
changeset
|
682 uint8_t old_mode = context->ch3_mode; |
|
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Initial implementation of channel 3 special mode
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diff
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|
683 context->ch3_mode = value & 0xC0; |
|
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Initial implementation of channel 3 special mode
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382
diff
changeset
|
684 if (context->ch3_mode != old_mode) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
685 ym_update_phase_inc(context, context->operators + 2*4, 2*4); |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
686 ym_update_phase_inc(context, context->operators + 2*4+1, 2*4+1); |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
687 ym_update_phase_inc(context, context->operators + 2*4+2, 2*4+2); |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
688 } |
| 362 | 689 break; |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
690 } |
| 362 | 691 case REG_KEY_ONOFF: { |
| 692 uint8_t channel = value & 0x7; | |
|
386
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
693 if (channel != 3 && channel != 7) { |
|
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
694 if (channel > 2) { |
|
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
695 channel--; |
|
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
696 } |
|
851
b10cf2c921ad
Fix mapping of key on/off reg bits to operators
Michael Pavone <pavone@retrodev.com>
parents:
848
diff
changeset
|
697 uint8_t bits[] = {0x10, 0x40, 0x20, 0x80}; |
|
b10cf2c921ad
Fix mapping of key on/off reg bits to operators
Michael Pavone <pavone@retrodev.com>
parents:
848
diff
changeset
|
698 for (uint8_t op = channel * 4, bit = 0; op < (channel + 1) * 4; op++, bit++) { |
|
b10cf2c921ad
Fix mapping of key on/off reg bits to operators
Michael Pavone <pavone@retrodev.com>
parents:
848
diff
changeset
|
699 if (value & bits[bit]) { |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
700 if (context->operators[op].env_phase == PHASE_RELEASE) |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
701 { |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
702 first_key_on = 1; |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
703 //printf("Key On for operator %d in channel %d\n", op, channel); |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
704 context->operators[op].phase_counter = 0; |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
705 context->operators[op].env_phase = PHASE_ATTACK; |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
706 } |
| 362 | 707 } else { |
| 708 //printf("Key Off for operator %d in channel %d\n", op, channel); | |
| 709 context->operators[op].env_phase = PHASE_RELEASE; | |
| 710 } | |
| 711 } | |
| 712 } | |
| 713 break; | |
| 714 } | |
| 715 case REG_DAC: | |
| 716 if (context->dac_enable) { | |
| 717 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
|
718 //printf("DAC Write %X(%d) @ %d\n", value, context->channels[5].output, context->current_cycle); |
| 362 | 719 } |
| 720 break; | |
| 721 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
|
722 //printf("DAC Enable: %X\n", value); |
| 362 | 723 context->dac_enable = value & 0x80; |
| 724 break; | |
| 725 } | |
| 726 } else if (context->selected_reg < 0xA0) { | |
| 727 //part | |
| 728 uint8_t op = context->selected_part ? (NUM_OPERATORS/2) : 0; | |
| 729 //channel in part | |
| 730 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
|
731 op += 4 * (context->selected_reg & 0x3) + ((context->selected_reg & 0xC) / 4); |
| 362 | 732 //printf("write targets operator %d (%d of channel %d)\n", op, op % 4, op / 4); |
| 733 ym_operator * operator = context->operators + op; | |
| 734 switch (context->selected_reg & 0xF0) | |
| 735 { | |
| 736 case REG_DETUNE_MULT: | |
| 737 operator->detune = value >> 4 & 0x7; | |
| 738 operator->multiple = value & 0xF; | |
| 739 ym_update_phase_inc(context, operator, op); | |
| 740 break; | |
| 741 case REG_TOTAL_LEVEL: | |
| 742 operator->total_level = (value & 0x7F) << 5; | |
| 743 break; | |
| 744 case REG_ATTACK_KS: | |
| 376 | 745 operator->key_scaling = 3 - (value >> 6); |
| 362 | 746 operator->rates[PHASE_ATTACK] = value & 0x1F; |
| 747 break; | |
| 748 case REG_DECAY_AM: | |
| 749 //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
|
750 operator->am = value & 0x80; |
| 362 | 751 operator->rates[PHASE_DECAY] = value & 0x1F; |
| 752 break; | |
| 753 case REG_SUSTAIN_RATE: | |
| 754 operator->rates[PHASE_SUSTAIN] = value & 0x1F; | |
| 755 break; | |
| 756 case REG_S_LVL_R_RATE: | |
| 757 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
|
758 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
|
759 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
|
760 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
|
761 } |
| 362 | 762 break; |
| 763 } | |
| 764 } | |
| 765 } else { | |
| 766 uint8_t channel = context->selected_reg & 0x3; | |
| 767 if (channel != 3) { | |
| 768 if (context->selected_part) { | |
| 769 channel += 3; | |
| 770 } | |
| 771 //printf("write targets channel %d\n", channel); | |
| 772 switch (context->selected_reg & 0xFC) | |
| 773 { | |
| 774 case REG_FNUM_LOW: | |
| 775 context->channels[channel].block = context->channels[channel].block_fnum_latch >> 3 & 0x7; | |
| 776 context->channels[channel].fnum = (context->channels[channel].block_fnum_latch & 0x7) << 8 | value; | |
| 777 context->channels[channel].keycode = context->channels[channel].block << 2 | fnum_to_keycode[context->channels[channel].fnum >> 7]; | |
| 778 ym_update_phase_inc(context, context->operators + channel*4, channel*4); | |
| 779 ym_update_phase_inc(context, context->operators + channel*4+1, channel*4+1); | |
| 780 ym_update_phase_inc(context, context->operators + channel*4+2, channel*4+2); | |
| 781 ym_update_phase_inc(context, context->operators + channel*4+3, channel*4+3); | |
| 782 break; | |
| 783 case REG_BLOCK_FNUM_H:{ | |
| 784 context->channels[channel].block_fnum_latch = value; | |
| 785 break; | |
| 786 } | |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
787 case REG_FNUM_LOW_CH3: |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
788 if (channel < 3) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
789 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
|
790 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
|
791 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
|
792 if (context->ch3_mode) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
793 ym_update_phase_inc(context, context->operators + 2*4 + channel, 2*4); |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
794 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
795 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
796 break; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
797 case REG_BLOCK_FN_CH3: |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
798 if (channel < 3) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
799 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
|
800 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
801 break; |
| 362 | 802 case REG_ALG_FEEDBACK: |
| 803 context->channels[channel].algorithm = value & 0x7; | |
| 804 context->channels[channel].feedback = value >> 3 & 0x7; | |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
805 //printf("Algorithm %d, feedback %d for channel %d\n", value & 0x7, value >> 3 & 0x7, channel); |
| 362 | 806 break; |
| 807 case REG_LR_AMS_PMS: | |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
808 context->channels[channel].pms = (value & 0x7) * 32; |
| 362 | 809 context->channels[channel].ams = value >> 4 & 0x3; |
| 810 context->channels[channel].lr = value & 0xC0; | |
|
369
fc820ab1394b
Fix left/right enable default value
Mike Pavone <pavone@retrodev.com>
parents:
365
diff
changeset
|
811 //printf("Write of %X to LR_AMS_PMS reg for channel %d\n", value, channel); |
| 362 | 812 break; |
| 813 } | |
| 814 } | |
| 815 } | |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
816 |
| 362 | 817 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
|
818 context->busy_cycles = context->selected_reg < 0xA0 ? BUSY_CYCLES_DATA_LOW : BUSY_CYCLES_DATA_HIGH; |
| 374 | 819 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
|
820 } |
|
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
|
821 |
|
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
|
822 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
|
823 { |
|
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
|
824 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
|
825 } |
|
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
826 |
|
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
|
827 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
|
828 { |
|
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
|
829 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
|
830 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
|
831 "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
|
832 "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
|
833 "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
|
834 "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
|
835 "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
|
836 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
|
837 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
|
838 chan->ams, chan->pms); |
|
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
839 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
|
840 { |
|
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
841 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
|
842 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
|
843 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
|
844 } 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
|
845 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
|
846 } |
|
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
847 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
|
848 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
|
849 " 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
|
850 " 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
|
851 " 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
|
852 " Attack Rate: %d\n" |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
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changeset
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853 " Key Scaling: %d\n" |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
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854 " Decay Rate: %d\n" |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
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855 " Sustain Level: %d\n" |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
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856 " Sustain Rate: %d\n" |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
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857 " Release Rate: %d\n" |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
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858 " Amplitude Modulation %s\n", |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
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859 dispnum, op->multiple, op->detune, op->total_level, |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
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860 op->rates[PHASE_ATTACK], op->key_scaling, op->rates[PHASE_DECAY], |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
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861 op->sustain_level, op->rates[PHASE_SUSTAIN], op->rates[PHASE_RELEASE], |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
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862 op->am ? "On" : "Off"); |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
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863 } |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
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864 } |
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2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
865 |