Mercurial > repos > blastem
annotate ym2612.c @ 930:f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Sat, 13 Feb 2016 22:20:37 -0800 |
| parents | 0ee8cfcc06d1 |
| children | 01fb50390b27 |
| rev | line source |
|---|---|
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1 /* |
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2 Copyright 2013 Michael Pavone |
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3 This file is part of BlastEm. |
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. |
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5 */ |
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6 #include <string.h> |
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7 #include <math.h> |
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8 #include <stdio.h> |
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9 #include <stdlib.h> |
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10 #include "ym2612.h" |
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11 #include "render.h" |
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12 #include "wave.h" |
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The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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13 #include "blastem.h" |
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14 |
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15 //#define DO_DEBUG_PRINT |
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16 #ifdef DO_DEBUG_PRINT |
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17 #define dfprintf fprintf |
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18 #define dfopen(var, fname, mode) var=fopen(fname, mode) |
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19 #else |
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20 #define dfprintf |
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21 #define dfopen(var, fname, mode) |
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22 #endif |
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23 |
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24 #define BUSY_CYCLES_ADDRESS 17 |
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25 #define BUSY_CYCLES_DATA_LOW 83 |
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26 #define BUSY_CYCLES_DATA_HIGH 47 |
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27 #define OP_UPDATE_PERIOD 144 |
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28 |
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29 #define BIT_TIMERA_ENABLE 0x1 |
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30 #define BIT_TIMERB_ENABLE 0x2 |
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31 #define BIT_TIMERA_OVEREN 0x4 |
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32 #define BIT_TIMERB_OVEREN 0x8 |
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33 #define BIT_TIMERA_RESET 0x10 |
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34 #define BIT_TIMERB_RESET 0x20 |
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35 |
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36 #define BIT_TIMERA_LOAD 0x40 |
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37 #define BIT_TIMERB_LOAD 0x80 |
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38 |
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39 #define BIT_STATUS_TIMERA 0x1 |
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40 #define BIT_STATUS_TIMERB 0x2 |
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41 |
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42 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 int16_t ams_shift[] = {8, 1, -1, -2}; |
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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 if (!log_context) { |
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108 return; |
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109 } |
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110 for (int i = 0; i < NUM_CHANNELS; i++) { |
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111 if (log_context->channels[i].logfile) { |
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112 wave_finalize(log_context->channels[i].logfile); |
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113 } |
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114 } |
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115 log_context = NULL; |
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116 } |
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117 #define BUFFER_INC_RES 1000000000UL |
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118 |
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119 void ym_adjust_master_clock(ym2612_context * context, uint32_t master_clock) |
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120 { |
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121 uint64_t old_inc = context->buffer_inc; |
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122 context->buffer_inc = ((BUFFER_INC_RES * (uint64_t)context->sample_rate) / (uint64_t)master_clock) * (uint64_t)context->clock_inc; |
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123 } |
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124 |
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125 #ifdef __ANDROID__ |
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126 #define log2(x) (log(x)/log(2)) |
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127 #endif |
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128 |
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129 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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130 { |
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131 static uint8_t registered_finalize; |
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132 dfopen(debug_file, "ym_debug.txt", "w"); |
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133 memset(context, 0, sizeof(*context)); |
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134 context->audio_buffer = malloc(sizeof(*context->audio_buffer) * sample_limit*2); |
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135 context->back_buffer = malloc(sizeof(*context->audio_buffer) * sample_limit*2); |
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136 context->sample_rate = sample_rate; |
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137 context->clock_inc = clock_div * 6; |
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138 ym_adjust_master_clock(context, master_clock); |
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139 |
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140 context->sample_limit = sample_limit*2; |
| 374 | 141 context->write_cycle = CYCLE_NEVER; |
| 362 | 142 for (int i = 0; i < NUM_OPERATORS; i++) { |
| 143 context->operators[i].envelope = MAX_ENVELOPE; | |
| 144 context->operators[i].env_phase = PHASE_RELEASE; | |
| 145 } | |
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146 //some games seem to expect that the LR flags start out as 1 |
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147 for (int i = 0; i < NUM_CHANNELS; i++) { |
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148 context->channels[i].lr = 0xC0; |
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149 if (options & YM_OPT_WAVE_LOG) { |
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150 char fname[64]; |
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151 sprintf(fname, "ym_channel_%d.wav", i); |
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152 FILE * f = context->channels[i].logfile = fopen(fname, "wb"); |
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153 if (!f) { |
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154 fprintf(stderr, "Failed to open WAVE log file %s for writing\n", fname); |
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155 continue; |
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156 } |
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157 if (!wave_init(f, sample_rate, 16, 1)) { |
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158 fclose(f); |
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159 context->channels[i].logfile = NULL; |
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160 } |
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161 } |
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162 } |
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163 if (options & YM_OPT_WAVE_LOG) { |
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164 log_context = context; |
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165 if (!registered_finalize) { |
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166 atexit(ym_finalize_log); |
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167 registered_finalize = 1; |
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168 } |
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169 } |
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170 if (!did_tbl_init) { |
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171 //populate sine table |
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172 for (int32_t i = 0; i < 512; i++) { |
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173 double sine = sin( ((double)(i*2+1) / SINE_TABLE_SIZE) * M_PI_2 ); |
|
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174 |
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175 //table stores 4.8 fixed pointed representation of the base 2 log |
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176 sine_table[i] = round_fixed_point(-log2(sine), 8); |
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177 } |
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178 //populate power table |
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179 for (int32_t i = 0; i < POW_TABLE_SIZE; i++) { |
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180 double linear = pow(2, -((double)((i & 0xFF)+1) / 256.0)); |
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181 int32_t tmp = round_fixed_point(linear, 11); |
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182 int32_t shift = (i >> 8) - 2; |
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183 if (shift < 0) { |
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184 tmp <<= 0-shift; |
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185 } else { |
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186 tmp >>= shift; |
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187 } |
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188 pow_table[i] = tmp; |
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189 } |
| 362 | 190 //populate envelope generator rate table, from small base table |
| 191 for (int rate = 0; rate < 64; rate++) { | |
|
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192 for (int cycle = 0; cycle < 8; cycle++) { |
| 362 | 193 uint16_t value; |
|
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194 if (rate < 2) { |
| 362 | 195 value = 0; |
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196 } else if (rate >= 60) { |
| 362 | 197 value = 8; |
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198 } else if (rate < 8) { |
|
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199 value = rate_table_base[((rate & 6) == 6 ? 16 : 0) + cycle]; |
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200 } else if (rate < 48) { |
| 362 | 201 value = rate_table_base[(rate & 0x3) * 8 + cycle]; |
| 202 } else { | |
|
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203 value = rate_table_base[32 + (rate & 0x3) * 8 + cycle] << ((rate - 48) >> 2); |
| 362 | 204 } |
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205 rate_table[rate * 8 + cycle] = value; |
| 362 | 206 } |
| 207 } | |
|
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208 //populate LFO PM table from small base table |
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209 //seems like there must be a better way to derive this |
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210 for (int freq = 0; freq < 128; freq++) { |
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211 for (int pms = 0; pms < 8; pms++) { |
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212 for (int step = 0; step < 32; step++) { |
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213 int16_t value = 0; |
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214 for (int bit = 0x40, shift = 0; bit > 0; bit >>= 1, shift++) { |
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215 if (freq & bit) { |
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216 value += lfo_pm_base[pms][(step & 0x8) ? 7-step & 7 : step & 7] >> shift; |
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217 } |
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218 } |
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219 if (step & 0x10) { |
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220 value = -value; |
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221 } |
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222 lfo_pm_table[freq * 256 + pms * 32 + step] = value; |
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223 } |
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224 } |
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225 } |
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226 } |
|
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227 } |
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228 |
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229 void ym_free(ym2612_context *context) |
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230 { |
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231 if (context == log_context) { |
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232 ym_finalize_log(); |
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233 } |
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234 free(context->audio_buffer); |
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235 //TODO: Figure out how to make this 100% safe |
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236 //audio thread could still be using this |
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237 free(context->back_buffer); |
|
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238 free(context); |
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239 } |
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240 |
|
522
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Adjust PSG and YM-2612 volume to be closer to the real console
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241 #define YM_VOLUME_MULTIPLIER 2 |
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242 #define YM_VOLUME_DIVIDER 3 |
|
381
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243 #define YM_MOD_SHIFT 1 |
|
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244 |
| 403 | 245 #define TIMER_A_MAX 1023 |
|
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246 #define TIMER_B_MAX 255 |
| 403 | 247 |
|
288
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248 void ym_run(ym2612_context * context, uint32_t to_cycle) |
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249 { |
| 362 | 250 //printf("Running YM2612 from cycle %d to cycle %d\n", context->current_cycle, to_cycle); |
| 251 //TODO: Fix channel update order OR remap channels in register write | |
|
380
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Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
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252 for (; context->current_cycle < to_cycle; context->current_cycle += context->clock_inc) { |
|
359
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253 //Update timers at beginning of 144 cycle period |
| 403 | 254 if (!context->current_op) { |
| 255 if (context->timer_control & BIT_TIMERA_ENABLE) { | |
| 256 if (context->timer_a != TIMER_A_MAX) { | |
| 257 context->timer_a++; | |
| 258 } else { | |
|
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259 if (context->timer_control & BIT_TIMERA_LOAD) { |
|
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Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
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260 context->timer_control &= ~BIT_TIMERA_LOAD; |
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261 } else if (context->timer_control & BIT_TIMERA_OVEREN) { |
| 403 | 262 context->status |= BIT_STATUS_TIMERA; |
| 263 } | |
| 264 context->timer_a = context->timer_a_load; | |
|
359
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265 } |
|
288
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266 } |
|
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267 if (!context->sub_timer_b) { |
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parents:
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268 if (context->timer_control & BIT_TIMERB_ENABLE) { |
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269 if (context->timer_b != TIMER_B_MAX) { |
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270 context->timer_b++; |
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271 } else { |
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272 if (context->timer_control & BIT_TIMERB_LOAD) { |
|
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273 context->timer_control &= ~BIT_TIMERB_LOAD; |
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274 } else if (context->timer_control & BIT_TIMERB_OVEREN) { |
|
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275 context->status |= BIT_STATUS_TIMERB; |
|
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Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
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276 } |
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Michael Pavone <pavone@retrodev.com>
parents:
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277 context->timer_b = context->timer_b_load; |
|
359
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278 } |
|
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279 } |
|
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diff
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280 } |
|
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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:
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diff
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|
281 context->sub_timer_b += 0x10; |
|
740
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
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282 //Update LFO |
|
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283 if (context->lfo_enable) { |
|
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Fix LFO counter update speed and implement amplitude modulation
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284 if (context->lfo_counter) { |
|
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Fix LFO counter update speed and implement amplitude modulation
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285 context->lfo_counter--; |
|
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286 } else { |
|
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parents:
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287 context->lfo_counter = lfo_timer_values[context->lfo_freq]; |
|
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288 context->lfo_am_step += 2; |
|
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289 context->lfo_am_step &= 0xFE; |
|
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diff
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290 context->lfo_pm_step = context->lfo_am_step / 8; |
|
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291 } |
|
411
baf4688901f2
Initial stab at LFO phase modulation
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diff
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292 } |
|
baf4688901f2
Initial stab at LFO phase modulation
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293 } |
|
359
cc39629e8d06
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diff
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|
294 //Update Envelope Generator |
|
364
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362
diff
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295 if (!(context->current_op % 3)) { |
|
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diff
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296 uint32_t env_cyc = context->env_counter; |
|
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diff
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297 uint32_t op = context->current_env_op; |
| 362 | 298 ym_operator * operator = context->operators + op; |
| 299 ym_channel * channel = context->channels + op/4; | |
|
359
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diff
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300 uint8_t rate; |
|
929
0ee8cfcc06d1
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diff
changeset
|
301 if (operator->env_phase == PHASE_DECAY && operator->envelope >= operator->sustain_level) { |
|
0ee8cfcc06d1
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diff
changeset
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302 //operator->envelope = operator->sustain_level; |
|
0ee8cfcc06d1
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diff
changeset
|
303 operator->env_phase = PHASE_SUSTAIN; |
|
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parents:
884
diff
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|
304 } |
| 362 | 305 for(;;) { |
| 306 rate = operator->rates[operator->env_phase]; | |
| 307 if (rate) { | |
| 308 uint8_t ks = channel->keycode >> operator->key_scaling;; | |
| 309 rate = rate*2 + ks; | |
| 310 if (rate > 63) { | |
| 311 rate = 63; | |
| 312 } | |
| 313 } | |
| 314 //Deal with "infinite" rates | |
|
370
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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diff
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315 //According to Nemesis this should be handled in key-on instead |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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diff
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316 if (rate >= 62 && operator->env_phase == PHASE_ATTACK) { |
|
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Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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diff
changeset
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317 operator->env_phase = PHASE_DECAY; |
|
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Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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diff
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318 operator->envelope = 0; |
| 362 | 319 } else { |
| 320 break; | |
| 321 } | |
| 322 } | |
| 323 uint32_t cycle_shift = rate < 0x30 ? ((0x2F - rate) >> 2) : 0; | |
|
370
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Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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324 if (first_key_on) { |
|
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Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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325 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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Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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|
326 } |
| 362 | 327 if (!(env_cyc & ((1 << cycle_shift) - 1))) { |
| 328 uint32_t update_cycle = env_cyc >> cycle_shift & 0x7; | |
|
852
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Michael Pavone <pavone@retrodev.com>
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diff
changeset
|
329 uint16_t envelope_inc = rate_table[rate * 8 + update_cycle]; |
| 362 | 330 if (operator->env_phase == PHASE_ATTACK) { |
| 331 //this can probably be optimized to a single shift rather than a multiply + shift | |
|
370
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Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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diff
changeset
|
332 if (first_key_on) { |
|
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Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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333 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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Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
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parents:
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diff
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|
334 } |
|
513
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
335 uint16_t old_env = operator->envelope; |
|
852
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parents:
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diff
changeset
|
336 operator->envelope += ((~operator->envelope * envelope_inc) >> 4) & 0xFFFFFFFC; |
|
513
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
337 if (operator->envelope > old_env) { |
|
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
338 //Handle overflow |
|
24ebabd89162
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Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
339 operator->envelope = 0; |
|
24ebabd89162
Properly clamp envelope value to zero when it overflows during the attack phase. This fixes a number of instruments that sounded rather wrong as well as the missing melody line from Mushroom Hill Zone in Sonic and Knuckles
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
340 } |
|
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
|
341 if (!operator->envelope) { |
| 362 | 342 operator->env_phase = PHASE_DECAY; |
| 343 } | |
| 344 } else { | |
|
370
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
345 if (first_key_on) { |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
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parents:
424
diff
changeset
|
346 dfprintf(debug_file, "Changing op %d envelope %d by %d in %s phase\n", op, operator->envelope, envelope_inc, |
|
370
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parents:
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diff
changeset
|
347 operator->env_phase == PHASE_SUSTAIN ? "sustain" : (operator->env_phase == PHASE_DECAY ? "decay": "release")); |
|
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parents:
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|
348 } |
|
852
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Fix some bugs in the attack phase and sustain level in the envelope generator
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parents:
851
diff
changeset
|
349 //envelope value is 10-bits, but it will be used as a 4.8 value |
|
5de8759b87af
Fix some bugs in the attack phase and sustain level in the envelope generator
Michael Pavone <pavone@retrodev.com>
parents:
851
diff
changeset
|
350 operator->envelope += envelope_inc << 2; |
| 362 | 351 //clamp to max attenuation value |
| 352 if (operator->envelope > MAX_ENVELOPE) { | |
| 353 operator->envelope = MAX_ENVELOPE; | |
| 354 } | |
| 355 } | |
|
364
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Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
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|
356 } |
|
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
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362
diff
changeset
|
357 context->current_env_op++; |
|
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Incredibly broken YM2612 support plus a fix to Z80 bus request
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parents:
362
diff
changeset
|
358 if (context->current_env_op == NUM_OPERATORS) { |
|
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changeset
|
359 context->current_env_op = 0; |
|
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Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
360 context->env_counter++; |
| 362 | 361 } |
| 362 } | |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
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parents:
424
diff
changeset
|
363 |
| 362 | 364 //Update Phase Generator |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
365 uint32_t channel = context->current_op / 4; |
| 362 | 366 if (channel != 5 || !context->dac_enable) { |
|
364
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Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
367 uint32_t op = context->current_op; |
| 362 | 368 //printf("updating operator %d of channel %d\n", op, channel); |
| 369 ym_operator * operator = context->operators + op; | |
| 370 ym_channel * chan = context->channels + channel; | |
|
396
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Fix output of algorithm 4 and make some other minor YM2612 core improvements
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parents:
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diff
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|
371 uint16_t phase = operator->phase_counter >> 10 & 0x3FF; |
| 362 | 372 operator->phase_counter += operator->phase_inc; |
|
411
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Initial stab at LFO phase modulation
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|
373 if (chan->pms) { |
|
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Initial stab at LFO phase modulation
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|
374 //not entirely sure this will get the precision correct, but I'd like to avoid recalculating phase |
|
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Initial stab at LFO phase modulation
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|
375 //increment every update when LFO phase modulation is enabled |
|
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Initial stab at LFO phase modulation
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diff
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|
376 int16_t lfo_mod = lfo_pm_table[(chan->fnum & 0x7F0) * 16 + chan->pms + context->lfo_pm_step]; |
|
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Initial stab at LFO phase modulation
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diff
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|
377 if (operator->multiple) { |
|
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Initial stab at LFO phase modulation
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diff
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|
378 lfo_mod *= operator->multiple; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
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diff
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|
379 } else { |
|
baf4688901f2
Initial stab at LFO phase modulation
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407
diff
changeset
|
380 lfo_mod >>= 1; |
|
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Initial stab at LFO phase modulation
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diff
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|
381 } |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
382 operator->phase_counter += lfo_mod; |
|
411
baf4688901f2
Initial stab at LFO phase modulation
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diff
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|
383 } |
|
371
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
384 int16_t mod = 0; |
| 362 | 385 switch (op % 4) |
|
359
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|
386 { |
| 362 | 387 case 0://Operator 1 |
| 377 | 388 if (chan->feedback) { |
|
527
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parents:
522
diff
changeset
|
389 mod = (chan->op1_old + operator->output) >> (10-chan->feedback); |
| 377 | 390 } |
|
359
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|
391 break; |
| 362 | 392 case 1://Operator 3 |
| 393 switch(chan->algorithm) | |
| 394 { | |
| 395 case 0: | |
| 396 case 2: | |
| 397 //modulate by operator 2 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
398 mod = context->operators[op+1].output >> YM_MOD_SHIFT; |
| 362 | 399 break; |
| 400 case 1: | |
| 401 //modulate by operator 1+2 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
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378
diff
changeset
|
402 mod = (context->operators[op-1].output + context->operators[op+1].output) >> YM_MOD_SHIFT; |
| 362 | 403 break; |
| 404 case 5: | |
| 405 //modulate by operator 1 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
406 mod = context->operators[op-1].output >> YM_MOD_SHIFT; |
| 362 | 407 } |
| 408 break; | |
| 409 case 2://Operator 2 | |
|
406
b1bc1947d949
Fix modulation condition for operator 2
Mike Pavone <pavone@retrodev.com>
parents:
403
diff
changeset
|
410 if (chan->algorithm != 1 && chan->algorithm != 2 && chan->algorithm != 7) { |
| 362 | 411 //modulate by Operator 1 |
|
379
3218e2f8d685
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Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
412 mod = context->operators[op-2].output >> YM_MOD_SHIFT; |
| 362 | 413 } |
|
359
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diff
changeset
|
414 break; |
| 362 | 415 case 3://Operator 4 |
| 416 switch(chan->algorithm) | |
| 417 { | |
| 418 case 0: | |
| 419 case 1: | |
| 420 case 4: | |
| 421 //modulate by operator 3 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
422 mod = context->operators[op-2].output >> YM_MOD_SHIFT; |
| 362 | 423 break; |
| 424 case 2: | |
| 425 //modulate by operator 1+3 | |
|
379
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Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
426 mod = (context->operators[op-3].output + context->operators[op-2].output) >> YM_MOD_SHIFT; |
| 362 | 427 break; |
| 428 case 3: | |
| 429 //modulate by operator 2+3 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
430 mod = (context->operators[op-1].output + context->operators[op-2].output) >> YM_MOD_SHIFT; |
| 362 | 431 break; |
| 432 case 5: | |
| 433 //modulate by operator 1 | |
|
379
3218e2f8d685
Make shift value of operator output to modulation input a define
Mike Pavone <pavone@retrodev.com>
parents:
378
diff
changeset
|
434 mod = context->operators[op-3].output >> YM_MOD_SHIFT; |
| 362 | 435 break; |
| 436 } | |
|
359
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parents:
288
diff
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|
437 break; |
|
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parents:
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diff
changeset
|
438 } |
|
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
|
439 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
|
440 if (operator->am) { |
|
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
441 uint16_t base_am = (context->lfo_am_step & 0x80 ? context->lfo_am_step : ~context->lfo_am_step) & 0x7E; |
|
930
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
442 if (ams_shift[chan->ams] >= 0) { |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
443 env += base_am >> ams_shift[chan->ams]; |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
444 } else { |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
445 env += base_am << (-ams_shift[chan->ams]); |
|
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
929
diff
changeset
|
446 } |
|
740
25c9e9d39997
Fix LFO counter update speed and implement amplitude modulation
Michael Pavone <pavone@retrodev.com>
parents:
739
diff
changeset
|
447 } |
|
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
|
448 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
|
449 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
|
450 } |
|
5f215603d001
Fix register to operator mapping. Fix rate table generation. Add TL to envelope value rather than using it as a limit for the attack phase.
Mike Pavone <pavone@retrodev.com>
parents:
369
diff
changeset
|
451 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
|
452 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
|
453 } |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
454 //if ((channel != 0 && channel != 4) || chan->algorithm != 5) { |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
455 phase += mod; |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
456 //} |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
457 |
|
371
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
458 int16_t output = pow_table[sine_table[phase & 0x1FF] + env]; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
459 if (phase & 0x200) { |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
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parents:
288
diff
changeset
|
460 output = -output; |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
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parents:
288
diff
changeset
|
461 } |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
462 if (op % 4 == 0) { |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
463 chan->op1_old = operator->output; |
|
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
464 } |
| 362 | 465 operator->output = output; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
466 //Update the channel output if we've updated all operators |
|
cc39629e8d06
YM2612 WIP snapshot before register refactor
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parents:
288
diff
changeset
|
467 if (op % 4 == 3) { |
| 362 | 468 if (chan->algorithm < 4) { |
| 469 chan->output = operator->output; | |
| 470 } 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
|
471 chan->output = operator->output + context->operators[channel * 4 + 2].output; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
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parents:
288
diff
changeset
|
472 } else { |
|
cc39629e8d06
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Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
473 output = 0; |
| 362 | 474 for (uint32_t op = ((chan->algorithm == 7) ? 0 : 1) + channel*4; op < (channel+1)*4; op++) { |
| 475 output += context->operators[op].output; | |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
476 } |
| 362 | 477 chan->output = output; |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
478 } |
|
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
|
479 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
|
480 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
|
481 if (value & 0x2000) { |
|
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
482 value |= 0xC000; |
|
0f8a759f1ff4
Use signed ints for things that represent signed values in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
370
diff
changeset
|
483 } |
|
522
6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
Michael Pavone <pavone@retrodev.com>
parents:
521
diff
changeset
|
484 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
|
485 } |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
486 } |
| 362 | 487 //puts("operator update done"); |
|
359
cc39629e8d06
YM2612 WIP snapshot before register refactor
Mike Pavone <pavone@retrodev.com>
parents:
288
diff
changeset
|
488 } |
|
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
489 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
|
490 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
|
491 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
|
492 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
|
493 } |
|
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 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
|
495 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
|
496 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
|
497 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
|
498 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
|
499 int16_t value = context->channels[i].output; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
500 if (value > 0x1FE0) { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
501 value = 0x1FE0; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
502 } else if (value < -0x1FF0) { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
503 value = -0x1FF0; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
504 } else { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
505 value &= 0x3FE0; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
506 if (value & 0x2000) { |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
507 value |= 0xC000; |
|
7565ec2ac652
Fix overflow handling on FM channel output
Michael Pavone <pavone@retrodev.com>
parents:
513
diff
changeset
|
508 } |
|
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
|
509 } |
|
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
|
510 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
|
511 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
|
512 } |
|
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513 if (context->channels[i].lr & 0x80) { |
|
522
6a14c5a95648
Adjust PSG and YM-2612 volume to be closer to the real console
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diff
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514 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.
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515 } |
|
483
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516 if (context->channels[i].lr & 0x40) { |
|
522
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517 context->audio_buffer[context->buffer_pos+1] += (value * YM_VOLUME_MULTIPLIER) / YM_VOLUME_DIVIDER; |
|
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518 } |
|
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519 } |
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520 context->buffer_pos += 2; |
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521 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.
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483
diff
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522 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.
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diff
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523 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
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524 } |
|
380
1c8d74f2ab0b
Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
Mike Pavone <pavone@retrodev.com>
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525 } |
|
364
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526 } |
|
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527 } |
|
535
aaa77e351c24
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528 if (context->current_cycle >= context->write_cycle + (context->busy_cycles * context->clock_inc / 6)) { |
|
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529 context->status &= 0x7F; |
| 374 | 530 context->write_cycle = CYCLE_NEVER; |
|
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531 } |
| 362 | 532 //printf("Done running YM2612 at cycle %d\n", context->current_cycle, to_cycle); |
|
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533 } |
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534 |
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535 void ym_address_write_part1(ym2612_context * context, uint8_t address) |
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536 { |
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537 //printf("address_write_part1: %X\n", address); |
| 362 | 538 context->selected_reg = address; |
| 539 context->selected_part = 0; | |
|
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diff
changeset
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540 context->write_cycle = context->current_cycle; |
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diff
changeset
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541 context->busy_cycles = BUSY_CYCLES_ADDRESS; |
|
650
55b550fe8891
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542 context->status |= 0x80; |
|
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543 } |
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parents:
diff
changeset
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544 |
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parents:
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545 void ym_address_write_part2(ym2612_context * context, uint8_t address) |
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parents:
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546 { |
|
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diff
changeset
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547 //printf("address_write_part2: %X\n", address); |
| 362 | 548 context->selected_reg = address; |
| 549 context->selected_part = 1; | |
|
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550 context->write_cycle = context->current_cycle; |
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551 context->busy_cycles = BUSY_CYCLES_ADDRESS; |
|
650
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parents:
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diff
changeset
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552 context->status |= 0x80; |
| 362 | 553 } |
| 554 | |
| 555 uint8_t fnum_to_keycode[] = { | |
| 556 //F11 = 0 | |
| 557 0,0,0,0,0,0,0,1, | |
| 558 //F11 = 1 | |
| 559 2,3,3,3,3,3,3,3 | |
| 560 }; | |
| 561 | |
| 562 //table courtesy of Nemesis | |
| 563 uint32_t detune_table[][4] = { | |
| 564 {0, 0, 1, 2}, //0 (0x00) | |
| 565 {0, 0, 1, 2}, //1 (0x01) | |
| 566 {0, 0, 1, 2}, //2 (0x02) | |
| 567 {0, 0, 1, 2}, //3 (0x03) | |
| 568 {0, 1, 2, 2}, //4 (0x04) | |
| 569 {0, 1, 2, 3}, //5 (0x05) | |
| 570 {0, 1, 2, 3}, //6 (0x06) | |
| 571 {0, 1, 2, 3}, //7 (0x07) | |
| 572 {0, 1, 2, 4}, //8 (0x08) | |
| 573 {0, 1, 3, 4}, //9 (0x09) | |
| 574 {0, 1, 3, 4}, //10 (0x0A) | |
| 575 {0, 1, 3, 5}, //11 (0x0B) | |
| 576 {0, 2, 4, 5}, //12 (0x0C) | |
| 577 {0, 2, 4, 6}, //13 (0x0D) | |
| 578 {0, 2, 4, 6}, //14 (0x0E) | |
| 579 {0, 2, 5, 7}, //15 (0x0F) | |
| 580 {0, 2, 5, 8}, //16 (0x10) | |
| 581 {0, 3, 6, 8}, //17 (0x11) | |
| 582 {0, 3, 6, 9}, //18 (0x12) | |
| 583 {0, 3, 7,10}, //19 (0x13) | |
| 584 {0, 4, 8,11}, //20 (0x14) | |
| 585 {0, 4, 8,12}, //21 (0x15) | |
| 586 {0, 4, 9,13}, //22 (0x16) | |
| 587 {0, 5,10,14}, //23 (0x17) | |
| 588 {0, 5,11,16}, //24 (0x18) | |
| 589 {0, 6,12,17}, //25 (0x19) | |
| 590 {0, 6,13,19}, //26 (0x1A) | |
| 591 {0, 7,14,20}, //27 (0x1B) | |
| 592 {0, 8,16,22}, //28 (0x1C) | |
| 593 {0, 8,16,22}, //29 (0x1D) | |
| 594 {0, 8,16,22}, //30 (0x1E) | |
| 595 {0, 8,16,22} | |
| 596 }; //31 (0x1F) | |
| 597 | |
| 598 void ym_update_phase_inc(ym2612_context * context, ym_operator * operator, uint32_t op) | |
| 599 { | |
| 600 uint32_t chan_num = op / 4; | |
| 601 //printf("ym_update_phase_inc | channel: %d, op: %d\n", chan_num, op); | |
| 602 //base frequency | |
| 603 ym_channel * channel = context->channels + chan_num; | |
|
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604 uint32_t inc, detune; |
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parents:
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605 if (chan_num == 2 && context->ch3_mode && (op < (2*4 + 3))) { |
|
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parents:
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diff
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606 //supplemental fnum registers are in a different order than normal slot paramters |
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diff
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607 int index = (op-2*4) ^ 2; |
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diff
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608 inc = context->ch3_supp[index].fnum; |
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changeset
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609 if (!context->ch3_supp[index].block) { |
|
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610 inc >>= 1; |
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parents:
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changeset
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611 } else { |
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parents:
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diff
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612 inc <<= (context->ch3_supp[index].block-1); |
|
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613 } |
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changeset
|
614 //detune |
|
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diff
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615 detune = detune_table[context->ch3_supp[index].keycode][operator->detune & 0x3]; |
|
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616 } else { |
|
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617 inc = channel->fnum; |
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618 if (!channel->block) { |
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parents:
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619 inc >>= 1; |
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620 } else { |
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621 inc <<= (channel->block-1); |
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622 } |
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623 //detune |
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624 detune = detune_table[channel->keycode][operator->detune & 0x3]; |
|
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parents:
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diff
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625 } |
|
739
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parents:
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diff
changeset
|
626 if (operator->detune & 0x4) { |
| 362 | 627 inc -= detune; |
| 628 //this can underflow, mask to 17-bit result | |
| 629 inc &= 0x1FFFF; | |
| 630 } else { | |
| 631 inc += detune; | |
| 632 } | |
| 633 //multiple | |
| 634 if (operator->multiple) { | |
| 635 inc *= operator->multiple; | |
|
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636 inc &= 0xFFFFF; |
| 362 | 637 } else { |
| 638 //0.5 | |
| 639 inc >>= 1; | |
|
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diff
changeset
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640 } |
|
365
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parents:
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diff
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641 //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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parents:
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642 operator->phase_inc = inc; |
|
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643 } |
|
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diff
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644 |
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645 void ym_data_write(ym2612_context * context, uint8_t value) |
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646 { |
|
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647 if (context->selected_reg >= YM_REG_END) { |
| 362 | 648 return; |
|
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649 } |
|
451
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650 if (context->selected_part) { |
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651 if (context->selected_reg < YM_PART2_START) { |
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652 return; |
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653 } |
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654 context->part2_regs[context->selected_reg - YM_PART2_START] = value; |
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655 } else { |
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656 if (context->selected_reg < YM_PART1_START) { |
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657 return; |
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658 } |
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659 context->part1_regs[context->selected_reg - YM_PART1_START] = value; |
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660 } |
|
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:
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661 dfprintf(debug_file, "write of %X to reg %X in part %d\n", value, context->selected_reg, context->selected_part+1); |
| 362 | 662 if (context->selected_reg < 0x30) { |
| 663 //Shared regs | |
| 664 switch (context->selected_reg) | |
| 665 { | |
|
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666 //TODO: Test reg |
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667 case REG_LFO: |
|
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668 /*if ((value & 0x8) && !context->lfo_enable) { |
|
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Initial stab at LFO phase modulation
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669 printf("LFO Enabled, Freq: %d\n", value & 0x7); |
|
532
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Mike Pavone <pavone@retrodev.com>
parents:
527
diff
changeset
|
670 }*/ |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
671 context->lfo_enable = value & 0x8; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
672 if (!context->lfo_enable) { |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
673 context->lfo_am_step = context->lfo_pm_step = 0; |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
674 } |
|
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
675 context->lfo_freq = value & 0x7; |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
676 |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
677 break; |
| 362 | 678 case REG_TIMERA_HIGH: |
| 679 context->timer_a_load &= 0x3; | |
| 680 context->timer_a_load |= value << 2; | |
| 681 break; | |
| 682 case REG_TIMERA_LOW: | |
| 683 context->timer_a_load &= 0xFFFC; | |
| 684 context->timer_a_load |= value & 0x3; | |
| 685 break; | |
| 686 case REG_TIMERB: | |
|
845
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
diff
changeset
|
687 context->timer_b_load = value; |
| 362 | 688 break; |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
689 case REG_TIME_CTRL: { |
| 403 | 690 if (value & BIT_TIMERA_ENABLE && !(context->timer_control & BIT_TIMERA_ENABLE)) { |
|
845
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
diff
changeset
|
691 context->timer_a = TIMER_A_MAX; |
|
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
diff
changeset
|
692 context->timer_control |= BIT_TIMERA_LOAD; |
| 403 | 693 } |
| 694 if (value & BIT_TIMERB_ENABLE && !(context->timer_control & BIT_TIMERB_ENABLE)) { | |
|
845
3a18b5f63afc
Small fix to how manual YM-2612 timer reloads work. Seems to better match a small test program and gets audio to match up in TM.EE's "I've got Italo Inside" track.
Michael Pavone <pavone@retrodev.com>
parents:
740
diff
changeset
|
695 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
|
696 context->timer_control |= BIT_TIMERB_LOAD; |
| 403 | 697 } |
|
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
|
698 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
|
699 context->timer_control |= value & 0xF; |
| 403 | 700 if (value & BIT_TIMERA_RESET) { |
| 701 context->status &= ~BIT_STATUS_TIMERA; | |
| 702 } | |
| 703 if (value & BIT_TIMERB_RESET) { | |
| 704 context->status &= ~BIT_STATUS_TIMERB; | |
| 705 } | |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
706 uint8_t old_mode = context->ch3_mode; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
707 context->ch3_mode = value & 0xC0; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
708 if (context->ch3_mode != old_mode) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
709 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
|
710 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
|
711 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
|
712 } |
| 362 | 713 break; |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
714 } |
| 362 | 715 case REG_KEY_ONOFF: { |
| 716 uint8_t channel = value & 0x7; | |
|
386
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
717 if (channel != 3 && channel != 7) { |
|
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
718 if (channel > 2) { |
|
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
719 channel--; |
|
6e5c4f3ab0e2
Fix channel mapping in key on/off register
Mike Pavone <pavone@retrodev.com>
parents:
383
diff
changeset
|
720 } |
|
851
b10cf2c921ad
Fix mapping of key on/off reg bits to operators
Michael Pavone <pavone@retrodev.com>
parents:
848
diff
changeset
|
721 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
|
722 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
|
723 if (value & bits[bit]) { |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
724 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
|
725 { |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
726 first_key_on = 1; |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
727 //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
|
728 context->operators[op].phase_counter = 0; |
|
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
729 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
|
730 } |
| 362 | 731 } else { |
| 732 //printf("Key Off for operator %d in channel %d\n", op, channel); | |
| 733 context->operators[op].env_phase = PHASE_RELEASE; | |
| 734 } | |
| 735 } | |
| 736 } | |
| 737 break; | |
| 738 } | |
| 739 case REG_DAC: | |
| 740 if (context->dac_enable) { | |
| 741 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
|
742 //printf("DAC Write %X(%d) @ %d\n", value, context->channels[5].output, context->current_cycle); |
| 362 | 743 } |
| 744 break; | |
| 745 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
|
746 //printf("DAC Enable: %X\n", value); |
| 362 | 747 context->dac_enable = value & 0x80; |
| 748 break; | |
| 749 } | |
| 750 } else if (context->selected_reg < 0xA0) { | |
| 751 //part | |
| 752 uint8_t op = context->selected_part ? (NUM_OPERATORS/2) : 0; | |
| 753 //channel in part | |
| 754 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
|
755 op += 4 * (context->selected_reg & 0x3) + ((context->selected_reg & 0xC) / 4); |
| 362 | 756 //printf("write targets operator %d (%d of channel %d)\n", op, op % 4, op / 4); |
| 757 ym_operator * operator = context->operators + op; | |
| 758 switch (context->selected_reg & 0xF0) | |
| 759 { | |
| 760 case REG_DETUNE_MULT: | |
| 761 operator->detune = value >> 4 & 0x7; | |
| 762 operator->multiple = value & 0xF; | |
| 763 ym_update_phase_inc(context, operator, op); | |
| 764 break; | |
| 765 case REG_TOTAL_LEVEL: | |
| 766 operator->total_level = (value & 0x7F) << 5; | |
| 767 break; | |
| 768 case REG_ATTACK_KS: | |
| 376 | 769 operator->key_scaling = 3 - (value >> 6); |
| 362 | 770 operator->rates[PHASE_ATTACK] = value & 0x1F; |
| 771 break; | |
| 772 case REG_DECAY_AM: | |
| 773 //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
|
774 operator->am = value & 0x80; |
| 362 | 775 operator->rates[PHASE_DECAY] = value & 0x1F; |
| 776 break; | |
| 777 case REG_SUSTAIN_RATE: | |
| 778 operator->rates[PHASE_SUSTAIN] = value & 0x1F; | |
| 779 break; | |
| 780 case REG_S_LVL_R_RATE: | |
| 781 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
|
782 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
|
783 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
|
784 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
|
785 } |
| 362 | 786 break; |
| 787 } | |
| 788 } | |
| 789 } else { | |
| 790 uint8_t channel = context->selected_reg & 0x3; | |
| 791 if (channel != 3) { | |
| 792 if (context->selected_part) { | |
| 793 channel += 3; | |
| 794 } | |
| 795 //printf("write targets channel %d\n", channel); | |
| 796 switch (context->selected_reg & 0xFC) | |
| 797 { | |
| 798 case REG_FNUM_LOW: | |
| 799 context->channels[channel].block = context->channels[channel].block_fnum_latch >> 3 & 0x7; | |
| 800 context->channels[channel].fnum = (context->channels[channel].block_fnum_latch & 0x7) << 8 | value; | |
| 801 context->channels[channel].keycode = context->channels[channel].block << 2 | fnum_to_keycode[context->channels[channel].fnum >> 7]; | |
| 802 ym_update_phase_inc(context, context->operators + channel*4, channel*4); | |
| 803 ym_update_phase_inc(context, context->operators + channel*4+1, channel*4+1); | |
| 804 ym_update_phase_inc(context, context->operators + channel*4+2, channel*4+2); | |
| 805 ym_update_phase_inc(context, context->operators + channel*4+3, channel*4+3); | |
| 806 break; | |
| 807 case REG_BLOCK_FNUM_H:{ | |
| 808 context->channels[channel].block_fnum_latch = value; | |
| 809 break; | |
| 810 } | |
|
383
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
811 case REG_FNUM_LOW_CH3: |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
812 if (channel < 3) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
813 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
|
814 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
|
815 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
|
816 if (context->ch3_mode) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
817 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
|
818 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
819 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
820 break; |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
821 case REG_BLOCK_FN_CH3: |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
822 if (channel < 3) { |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
823 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
|
824 } |
|
72933100c55c
Initial implementation of channel 3 special mode
Mike Pavone <pavone@retrodev.com>
parents:
382
diff
changeset
|
825 break; |
| 362 | 826 case REG_ALG_FEEDBACK: |
| 827 context->channels[channel].algorithm = value & 0x7; | |
| 828 context->channels[channel].feedback = value >> 3 & 0x7; | |
|
527
7df7f493b3b6
Fix operator 1 self-feedback
Michael Pavone <pavone@retrodev.com>
parents:
522
diff
changeset
|
829 //printf("Algorithm %d, feedback %d for channel %d\n", value & 0x7, value >> 3 & 0x7, channel); |
| 362 | 830 break; |
| 831 case REG_LR_AMS_PMS: | |
|
411
baf4688901f2
Initial stab at LFO phase modulation
Mike Pavone <pavone@retrodev.com>
parents:
407
diff
changeset
|
832 context->channels[channel].pms = (value & 0x7) * 32; |
| 362 | 833 context->channels[channel].ams = value >> 4 & 0x3; |
| 834 context->channels[channel].lr = value & 0xC0; | |
|
369
fc820ab1394b
Fix left/right enable default value
Mike Pavone <pavone@retrodev.com>
parents:
365
diff
changeset
|
835 //printf("Write of %X to LR_AMS_PMS reg for channel %d\n", value, channel); |
| 362 | 836 break; |
| 837 } | |
| 838 } | |
| 839 } | |
|
448
e85a107e6ec0
Fix handling of key on in YM2612 core
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
840 |
| 362 | 841 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
|
842 context->busy_cycles = context->selected_reg < 0xA0 ? BUSY_CYCLES_DATA_LOW : BUSY_CYCLES_DATA_HIGH; |
| 374 | 843 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
|
844 } |
|
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
|
845 |
|
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
|
846 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
|
847 { |
|
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
848 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
|
849 } |
|
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
|
850 |
|
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
|
851 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
|
852 { |
|
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
parents:
738
diff
changeset
|
853 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
|
854 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
|
855 "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
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856 "Feedback: %d\n" |
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857 "Pan: %s\n" |
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858 "AMS: %d\n" |
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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.
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859 "PMS: %d\n", |
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860 channel+1, chan->algorithm, chan->feedback, |
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861 chan->lr == 0xC0 ? "LR" : chan->lr == 0x80 ? "L" : chan->lr == 0x40 ? "R" : "", |
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862 chan->ams, chan->pms); |
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863 if (channel == 2) { |
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864 printf( |
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865 "Mode: %X: %s\n", |
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866 context->ch3_mode, context->ch3_mode ? "special" : "normal"); |
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867 } |
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868 for (int operator = channel * 4; operator < channel * 4+4; operator++) |
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869 { |
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870 int dispnum = operator - channel * 4 + 1; |
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871 if (dispnum == 2) { |
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872 dispnum = 3; |
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873 } else if (dispnum == 3) { |
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874 dispnum = 2; |
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875 } |
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876 ym_operator *op = context->operators + operator; |
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877 printf("\nOperator %d:\n" |
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878 " Multiple: %d\n" |
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879 " Detune: %d\n" |
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880 " Total Level: %d\n" |
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881 " Attack Rate: %d\n" |
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882 " Key Scaling: %d\n" |
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883 " Decay Rate: %d\n" |
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884 " Sustain Level: %d\n" |
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885 " Sustain Rate: %d\n" |
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886 " Release Rate: %d\n" |
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887 " Amplitude Modulation %s\n", |
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888 dispnum, op->multiple, op->detune, op->total_level, |
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889 op->rates[PHASE_ATTACK], op->key_scaling, op->rates[PHASE_DECAY], |
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890 op->sustain_level, op->rates[PHASE_SUSTAIN], op->rates[PHASE_RELEASE], |
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891 op->am ? "On" : "Off"); |
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892 } |
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893 } |
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894 |
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930
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895 void ym_print_timer_info(ym2612_context *context) |
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896 { |
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897 printf("***Timer A***\n" |
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898 "Current Value: %d\n" |
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899 "Load Value: %d\n" |
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900 "Triggered: %s\n" |
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901 "Enabled: %s\n\n", |
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902 context->timer_a, |
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903 context->timer_a_load, |
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904 context->status & BIT_STATUS_TIMERA ? "yes" : "no", |
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905 context->timer_control & BIT_TIMERA_ENABLE ? "yes" : "no"); |
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906 printf("***Timer B***\n" |
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907 "Current Value: %d\n" |
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908 "Load Value: %d\n" |
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909 "Triggered: %s\n" |
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910 "Enabled: %s\n\n", |
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911 context->timer_b, |
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912 context->timer_b_load, |
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913 context->status & BIT_STATUS_TIMERB ? "yes" : "no", |
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914 context->timer_control & BIT_TIMERB_ENABLE ? "yes" : "no"); |
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915 } |
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916 |