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Fix default target. Ensure m68k.h and z80.h are built before anything else when no dep info is available
author Michael Pavone <pavone@retrodev.com>
date Mon, 31 Mar 2025 21:06:18 -0700
parents 3f58fec775df
children
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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 "serialize.h"
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10 #include "ym_common.h"
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11 #include "render_audio.h"
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12 #include "vgm.h"
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13 #include "oscilloscope.h"
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14
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15 #define NUM_PART_REGS (0xB7-0x30)
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16 #define OPN2_NUM_CHANNELS 6
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17 #define OPN2_NUM_OPERATORS (4*OPN2_NUM_CHANNELS)
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18
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19 #define YM_OPT_WAVE_LOG 1
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20 #define YM_OPT_3834 2
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21
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22 typedef struct {
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23 uint16_t fnum;
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24 uint8_t block;
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25 uint8_t block_fnum_latch;
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26 uint8_t keycode;
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27 } ym_supp;
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28
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29 #define YM_PART1_START 0x21
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30 #define YM_PART2_START 0x30
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31 #define YM_REG_END 0xB8
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32 #define YM_PART1_REGS (YM_REG_END-YM_PART1_START)
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33 #define YM_PART2_REGS (YM_REG_END-YM_PART2_START)
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35 typedef struct {
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36 audio_source *audio;
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37 vgm_writer *vgm;
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38 oscilloscope *scope;
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39 uint32_t clock_inc;
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40 uint32_t current_cycle;
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41 uint32_t write_cycle;
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42 uint32_t busy_start;
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43 uint32_t busy_cycles;
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44 uint32_t last_status_cycle;
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45 uint32_t invalid_status_decay;
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46 uint32_t status_address_mask;
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47 int32_t volume_mult;
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48 int32_t volume_div;
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49 ym_operator operators[OPN2_NUM_OPERATORS];
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50 ym_channel channels[OPN2_NUM_CHANNELS];
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51 int16_t zero_offset;
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52 uint16_t timer_a;
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53 uint16_t timer_a_load;
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54 uint16_t env_counter;
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55 ym_supp ch3_supp[3];
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56 uint8_t timer_b;
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57 uint8_t sub_timer_b;
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58 uint8_t timer_b_load;
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59 uint8_t ch3_mode;
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60 uint8_t current_op;
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61 uint8_t current_env_op;
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62
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63 uint8_t timer_control;
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64 uint8_t dac_enable;
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65 uint8_t lfo_enable;
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66 uint8_t lfo_freq;
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67 uint8_t lfo_counter;
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68 uint8_t lfo_am_step;
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69 uint8_t lfo_pm_step;
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70 uint8_t csm_keyon;
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71 uint8_t status;
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72 uint8_t last_status;
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73 uint8_t selected_reg;
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74 uint8_t selected_part;
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75 uint8_t part1_regs[YM_PART1_REGS];
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76 uint8_t part2_regs[YM_PART2_REGS];
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77 } ym2612_context;
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78
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79 enum {
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80 REG_LFO = 0x22,
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81 REG_TIMERA_HIGH = 0x24,
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82 REG_TIMERA_LOW,
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83 REG_TIMERB,
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84 REG_TIME_CTRL,
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85 REG_KEY_ONOFF,
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86 REG_DAC = 0x2A,
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87 REG_DAC_ENABLE,
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88
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89 REG_DETUNE_MULT = 0x30,
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90 REG_TOTAL_LEVEL = 0x40,
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91 REG_ATTACK_KS = 0x50,
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92 REG_DECAY_AM = 0x60,
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93 REG_SUSTAIN_RATE = 0x70,
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94 REG_S_LVL_R_RATE = 0x80,
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95 REG_SSG_EG = 0x90,
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96
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97 REG_FNUM_LOW = 0xA0,
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98 REG_BLOCK_FNUM_H = 0xA4,
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99 REG_FNUM_LOW_CH3 = 0xA8,
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100 REG_BLOCK_FN_CH3 = 0xAC,
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101 REG_ALG_FEEDBACK = 0xB0,
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102 REG_LR_AMS_PMS = 0xB4
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103 };
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104
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105 void ym_init(ym2612_context * context, uint32_t master_clock, uint32_t clock_div, uint32_t options);
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106 void ym_reset(ym2612_context *context);
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107 void ym_free(ym2612_context *context);
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108 void ym_enable_zero_offset(ym2612_context *context, uint8_t enabled);
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109 void ym_adjust_master_clock(ym2612_context * context, uint32_t master_clock);
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110 void ym_adjust_cycles(ym2612_context *context, uint32_t deduction);
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111 void ym_run(ym2612_context * context, uint32_t to_cycle);
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112 void ym_address_write_part1(ym2612_context * context, uint8_t address);
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113 void ym_address_write_part2(ym2612_context * context, uint8_t address);
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114 void ym_data_write(ym2612_context * context, uint8_t value);
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115 void ym_vgm_log(ym2612_context *context, uint32_t master_clock, vgm_writer *vgm);
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116 uint8_t ym_read_status(ym2612_context * context, uint32_t cycle, uint32_t port);
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117 uint8_t ym_load_gst(ym2612_context * context, FILE * gstfile);
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118 uint8_t ym_save_gst(ym2612_context * context, FILE * gstfile);
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119 void ym_print_channel_info(ym2612_context *context, int channel);
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120 void ym_print_timer_info(ym2612_context *context);
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121 void ym_serialize(ym2612_context *context, serialize_buffer *buf);
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122 void ym_deserialize(deserialize_buffer *buf, void *vcontext);
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123 void ym_enable_scope(ym2612_context *context, oscilloscope *scope, uint32_t master_clock);
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124
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125 #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>
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126