Mercurial > repos > blastem
annotate ym2612.h @ 1781:2b4d5cfec6d9
Grab keyboard devices at startup so keyboard input stops going to terminal while running
author | Michael Pavone <pavone@retrodev.com> |
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date | Sun, 10 Mar 2019 22:22:23 -0700 |
parents | 804f13c090b4 |
children | 5278b6e44fc1 |
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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.h" |
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13 |
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14 #define NUM_PART_REGS (0xB7-0x30) |
362 | 15 #define NUM_CHANNELS 6 |
16 #define NUM_OPERATORS (4*NUM_CHANNELS) | |
17 | |
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18 #define YM_OPT_WAVE_LOG 1 |
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19 |
362 | 20 typedef struct { |
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21 int16_t *mod_src[2]; |
362 | 22 uint32_t phase_counter; |
23 uint16_t envelope; | |
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24 int16_t output; |
362 | 25 uint16_t total_level; |
26 uint16_t sustain_level; | |
27 uint8_t rates[4]; | |
28 uint8_t key_scaling; | |
29 uint8_t multiple; | |
30 uint8_t detune; | |
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31 uint8_t am; |
362 | 32 uint8_t env_phase; |
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33 uint8_t ssg; |
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34 uint8_t inverted; |
362 | 35 } ym_operator; |
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36 |
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37 typedef struct { |
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38 FILE * logfile; |
362 | 39 uint16_t fnum; |
40 int16_t output; | |
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41 int16_t op1_old; |
362 | 42 uint8_t block_fnum_latch; |
43 uint8_t block; | |
44 uint8_t keycode; | |
45 uint8_t algorithm; | |
46 uint8_t feedback; | |
47 uint8_t ams; | |
48 uint8_t pms; | |
49 uint8_t lr; | |
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50 uint8_t keyon; |
362 | 51 } ym_channel; |
52 | |
53 typedef struct { | |
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54 uint16_t fnum; |
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55 uint8_t block; |
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56 uint8_t block_fnum_latch; |
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57 uint8_t keycode; |
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58 } ym_supp; |
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59 |
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60 #define YM_PART1_START 0x21 |
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61 #define YM_PART2_START 0x30 |
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62 #define YM_REG_END 0xB8 |
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63 #define YM_PART1_REGS (YM_REG_END-YM_PART1_START) |
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64 #define YM_PART2_REGS (YM_REG_END-YM_PART2_START) |
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65 |
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66 typedef struct { |
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67 audio_source *audio; |
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68 uint32_t clock_inc; |
362 | 69 uint32_t current_cycle; |
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70 //TODO: Condense the next two fields into one |
362 | 71 uint32_t write_cycle; |
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72 uint32_t busy_cycles; |
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73 uint32_t lowpass_alpha; |
362 | 74 ym_operator operators[NUM_OPERATORS]; |
75 ym_channel channels[NUM_CHANNELS]; | |
76 uint16_t timer_a; | |
77 uint16_t timer_a_load; | |
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78 uint16_t env_counter; |
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79 ym_supp ch3_supp[3]; |
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80 uint8_t timer_b; |
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81 uint8_t sub_timer_b; |
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82 uint8_t timer_b_load; |
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83 uint8_t ch3_mode; |
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84 uint8_t current_op; |
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85 uint8_t current_env_op; |
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86 |
362 | 87 uint8_t timer_control; |
88 uint8_t dac_enable; | |
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89 uint8_t lfo_enable; |
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90 uint8_t lfo_freq; |
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91 uint8_t lfo_counter; |
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92 uint8_t lfo_am_step; |
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93 uint8_t lfo_pm_step; |
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94 uint8_t csm_keyon; |
362 | 95 uint8_t status; |
96 uint8_t selected_reg; | |
97 uint8_t selected_part; | |
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98 uint8_t part1_regs[YM_PART1_REGS]; |
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99 uint8_t part2_regs[YM_PART2_REGS]; |
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100 } ym2612_context; |
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101 |
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102 enum { |
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103 REG_LFO = 0x22, |
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104 REG_TIMERA_HIGH = 0x24, |
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105 REG_TIMERA_LOW, |
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106 REG_TIMERB, |
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107 REG_TIME_CTRL, |
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108 REG_KEY_ONOFF, |
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109 REG_DAC = 0x2A, |
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110 REG_DAC_ENABLE, |
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111 |
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112 REG_DETUNE_MULT = 0x30, |
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113 REG_TOTAL_LEVEL = 0x40, |
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114 REG_ATTACK_KS = 0x50, |
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115 REG_DECAY_AM = 0x60, |
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116 REG_SUSTAIN_RATE = 0x70, |
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117 REG_S_LVL_R_RATE = 0x80, |
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118 REG_SSG_EG = 0x90, |
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119 |
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120 REG_FNUM_LOW = 0xA0, |
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121 REG_BLOCK_FNUM_H = 0xA4, |
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122 REG_FNUM_LOW_CH3 = 0xA8, |
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123 REG_BLOCK_FN_CH3 = 0xAC, |
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124 REG_ALG_FEEDBACK = 0xB0, |
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125 REG_LR_AMS_PMS = 0xB4 |
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126 }; |
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127 |
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128 void ym_init(ym2612_context * context, uint32_t master_clock, uint32_t clock_div, uint32_t options); |
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129 void ym_reset(ym2612_context *context); |
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130 void ym_free(ym2612_context *context); |
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131 void ym_adjust_master_clock(ym2612_context * context, uint32_t master_clock); |
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132 void ym_run(ym2612_context * context, uint32_t to_cycle); |
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133 void ym_address_write_part1(ym2612_context * context, uint8_t address); |
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134 void ym_address_write_part2(ym2612_context * context, uint8_t address); |
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135 void ym_data_write(ym2612_context * context, uint8_t value); |
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136 uint8_t ym_read_status(ym2612_context * context); |
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137 uint8_t ym_load_gst(ym2612_context * context, FILE * gstfile); |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
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138 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>
parents:
535
diff
changeset
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139 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
diff
changeset
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140 void ym_print_timer_info(ym2612_context *context); |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1308
diff
changeset
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141 void ym_serialize(ym2612_context *context, serialize_buffer *buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1308
diff
changeset
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142 void ym_deserialize(deserialize_buffer *buf, void *vcontext); |
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
|
143 |
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
|
144 #endif //YM2612_H_ |
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
|
145 |