Mercurial > repos > blastem
annotate ym2612.h @ 2354:a773b8f09292
Remove old refresh hack that is causing VDPFifoTesting to have a failed test
author | Michael Pavone <pavone@retrodev.com> |
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date | Thu, 19 Oct 2023 23:27:57 -0700 |
parents | dec3287c9394 |
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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 #ifndef YM2612_H_ |
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7 #define YM2612_H_ |
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8 |
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9 #include <stdint.h> |
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10 #include <stdio.h> |
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11 #include "serialize.h" |
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12 #include "render_audio.h" |
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13 #include "vgm.h" |
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14 #include "oscilloscope.h" |
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15 |
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16 #define NUM_PART_REGS (0xB7-0x30) |
362 | 17 #define NUM_CHANNELS 6 |
18 #define NUM_OPERATORS (4*NUM_CHANNELS) | |
19 | |
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20 #define YM_OPT_WAVE_LOG 1 |
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21 #define YM_OPT_3834 2 |
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22 |
362 | 23 typedef struct { |
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24 int16_t *mod_src[2]; |
362 | 25 uint32_t phase_counter; |
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26 uint32_t phase_inc; |
362 | 27 uint16_t envelope; |
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28 int16_t output; |
362 | 29 uint16_t total_level; |
30 uint16_t sustain_level; | |
31 uint8_t rates[4]; | |
32 uint8_t key_scaling; | |
33 uint8_t multiple; | |
34 uint8_t detune; | |
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Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
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35 uint8_t am; |
362 | 36 uint8_t env_phase; |
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37 uint8_t ssg; |
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38 uint8_t inverted; |
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39 uint8_t phase_overflow; |
362 | 40 } ym_operator; |
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41 |
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42 typedef struct { |
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43 FILE * logfile; |
362 | 44 uint16_t fnum; |
45 int16_t output; | |
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46 int16_t op1_old; |
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47 int16_t op2_old; |
362 | 48 uint8_t block_fnum_latch; |
49 uint8_t block; | |
50 uint8_t keycode; | |
51 uint8_t algorithm; | |
52 uint8_t feedback; | |
53 uint8_t ams; | |
54 uint8_t pms; | |
55 uint8_t lr; | |
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56 uint8_t keyon; |
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57 uint8_t scope_channel; |
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58 uint8_t phase_overflow; |
362 | 59 } ym_channel; |
60 | |
61 typedef struct { | |
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62 uint16_t fnum; |
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63 uint8_t block; |
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64 uint8_t block_fnum_latch; |
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65 uint8_t keycode; |
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66 } ym_supp; |
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67 |
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68 #define YM_PART1_START 0x21 |
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69 #define YM_PART2_START 0x30 |
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70 #define YM_REG_END 0xB8 |
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71 #define YM_PART1_REGS (YM_REG_END-YM_PART1_START) |
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72 #define YM_PART2_REGS (YM_REG_END-YM_PART2_START) |
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73 |
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74 typedef struct { |
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75 audio_source *audio; |
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76 vgm_writer *vgm; |
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77 oscilloscope *scope; |
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78 uint32_t clock_inc; |
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79 uint32_t current_cycle; |
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80 uint32_t write_cycle; |
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81 uint32_t busy_start; |
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82 uint32_t busy_cycles; |
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83 uint32_t last_status_cycle; |
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84 uint32_t invalid_status_decay; |
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85 uint32_t status_address_mask; |
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86 int32_t volume_mult; |
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87 int32_t volume_div; |
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88 ym_operator operators[NUM_OPERATORS]; |
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89 ym_channel channels[NUM_CHANNELS]; |
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90 int16_t zero_offset; |
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91 uint16_t timer_a; |
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92 uint16_t timer_a_load; |
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93 uint16_t env_counter; |
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94 ym_supp ch3_supp[3]; |
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95 uint8_t timer_b; |
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96 uint8_t sub_timer_b; |
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97 uint8_t timer_b_load; |
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98 uint8_t ch3_mode; |
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99 uint8_t current_op; |
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100 uint8_t current_env_op; |
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101 |
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102 uint8_t timer_control; |
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103 uint8_t dac_enable; |
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104 uint8_t lfo_enable; |
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105 uint8_t lfo_freq; |
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106 uint8_t lfo_counter; |
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107 uint8_t lfo_am_step; |
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108 uint8_t lfo_pm_step; |
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109 uint8_t csm_keyon; |
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110 uint8_t status; |
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111 uint8_t last_status; |
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112 uint8_t selected_reg; |
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113 uint8_t selected_part; |
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114 uint8_t part1_regs[YM_PART1_REGS]; |
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115 uint8_t part2_regs[YM_PART2_REGS]; |
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116 } ym2612_context; |
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117 |
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118 enum { |
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119 REG_LFO = 0x22, |
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120 REG_TIMERA_HIGH = 0x24, |
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121 REG_TIMERA_LOW, |
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122 REG_TIMERB, |
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123 REG_TIME_CTRL, |
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124 REG_KEY_ONOFF, |
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125 REG_DAC = 0x2A, |
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126 REG_DAC_ENABLE, |
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127 |
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128 REG_DETUNE_MULT = 0x30, |
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129 REG_TOTAL_LEVEL = 0x40, |
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130 REG_ATTACK_KS = 0x50, |
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131 REG_DECAY_AM = 0x60, |
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132 REG_SUSTAIN_RATE = 0x70, |
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133 REG_S_LVL_R_RATE = 0x80, |
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134 REG_SSG_EG = 0x90, |
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135 |
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136 REG_FNUM_LOW = 0xA0, |
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137 REG_BLOCK_FNUM_H = 0xA4, |
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138 REG_FNUM_LOW_CH3 = 0xA8, |
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139 REG_BLOCK_FN_CH3 = 0xAC, |
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140 REG_ALG_FEEDBACK = 0xB0, |
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141 REG_LR_AMS_PMS = 0xB4 |
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142 }; |
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143 |
1555
6ce36c3f250b
More audio refactoring in preparation for allowing proper sync to video with dynamic audio rate control
Michael Pavone <pavone@retrodev.com>
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144 void ym_init(ym2612_context * context, uint32_t master_clock, uint32_t clock_div, uint32_t options); |
1308
1b3fe6e03e7b
Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon
Michael Pavone <pavone@retrodev.com>
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145 void ym_reset(ym2612_context *context); |
884
252dfd29831d
Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
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848
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146 void ym_free(ym2612_context *context); |
1798
5278b6e44fc1
Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612
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147 void ym_enable_zero_offset(ym2612_context *context, uint8_t enabled); |
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
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467
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148 void ym_adjust_master_clock(ym2612_context * context, uint32_t master_clock); |
1902
32a3aa7b4a45
Fix YM2612 busy flag timing
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149 void ym_adjust_cycles(ym2612_context *context, uint32_t deduction); |
288
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150 void ym_run(ym2612_context * context, uint32_t to_cycle); |
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151 void ym_address_write_part1(ym2612_context * context, uint8_t address); |
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152 void ym_address_write_part2(ym2612_context * context, uint8_t address); |
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153 void ym_data_write(ym2612_context * context, uint8_t value); |
1909
508522f08e4d
Initial stab at VGM logging support
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1904
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154 void ym_vgm_log(ym2612_context *context, uint32_t master_clock, vgm_writer *vgm); |
1904
8312e574100a
Implement selectable YM2612/YM3834 invalid status port behavior
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1902
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155 uint8_t ym_read_status(ym2612_context * context, uint32_t cycle, uint32_t port); |
424
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
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411
diff
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156 uint8_t ym_load_gst(ym2612_context * context, FILE * gstfile); |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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424
diff
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157 uint8_t ym_save_gst(ym2612_context * context, FILE * gstfile); |
739
2317bdca03b4
Add a basic YM-2612 command to the debugger. Fix negative detune values and get the correct precision for the multiplication step of phase inc calculation
Michael Pavone <pavone@retrodev.com>
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535
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158 void ym_print_channel_info(ym2612_context *context, int channel); |
930
f33e8d88ab6f
Add yt debug command for printing YM-2612 timer info. Fix AMS shift values.
Michael Pavone <pavone@retrodev.com>
parents:
884
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159 void ym_print_timer_info(ym2612_context *context); |
1427
4e5797b3935a
WIP - New savestate format
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1308
diff
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160 void ym_serialize(ym2612_context *context, serialize_buffer *buf); |
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1308
diff
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161 void ym_deserialize(deserialize_buffer *buf, void *vcontext); |
2255
74112041b2c7
Proper calculation of sample rate for YM2612/PSG oscilloscope view
Michael Pavone <pavone@retrodev.com>
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2243
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162 void ym_enable_scope(ym2612_context *context, oscilloscope *scope, uint32_t master_clock); |
288
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163 |
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164 #endif //YM2612_H_ |
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165 |