Mercurial > repos > blastem
annotate psg.h @ 2276:709036ee222a
Don't set write pending flag for non-existent RF5C164 registers
author | Michael Pavone <pavone@retrodev.com> |
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date | Mon, 02 Jan 2023 11:37:31 -0800 |
parents | 74112041b2c7 |
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rev | line source |
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Added copyright notice to source files and added GPL license text in COPYING
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1 /* |
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2 Copyright 2013 Michael Pavone |
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Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
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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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Initial PSG support. Mostly works, noise channel is borked though.
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6 #ifndef PSG_CONTEXT_H_ |
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7 #define PSG_CONTEXT_H_ |
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8 |
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9 #include <stdint.h> |
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WIP - New savestate format
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10 #include "serialize.h" |
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Split generic part of audio code into a separate file so it can be used in other targets besides SDL
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11 #include "render_audio.h" |
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Initial stab at VGM logging support
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12 #include "vgm.h" |
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Initial implementation of oscilloscope debug view
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13 #include "oscilloscope.h" |
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14 |
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15 typedef struct { |
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Small cleanup to audio interface between emulation code and renderer backend
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16 audio_source *audio; |
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17 vgm_writer *vgm; |
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18 oscilloscope *scope; |
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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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19 uint32_t clock_inc; |
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20 uint32_t cycles; |
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21 uint16_t lsfr; |
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22 uint16_t counter_load[4]; |
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23 uint16_t counters[4]; |
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24 uint8_t volume[4]; |
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25 uint8_t output_state[4]; |
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26 uint8_t scope_channel[4]; |
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27 uint8_t noise_out; |
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28 uint8_t noise_use_tone; |
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29 uint8_t noise_type; |
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30 uint8_t latch; |
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Implement Game Gear PSG panning
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31 uint8_t pan; |
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32 } psg_context; |
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33 |
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34 |
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More audio refactoring in preparation for allowing proper sync to video with dynamic audio rate control
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35 void psg_init(psg_context * context, uint32_t master_clock, uint32_t clock_div); |
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Proper calculation of sample rate for YM2612/PSG oscilloscope view
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36 void psg_enable_scope(psg_context *context, oscilloscope *scope, uint32_t master_clock); |
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Selecting a second game from the menu now works
Michael Pavone <pavone@retrodev.com>
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37 void psg_free(psg_context *context); |
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
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38 void psg_adjust_master_clock(psg_context * context, uint32_t master_clock); |
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39 void psg_write(psg_context * context, uint8_t value); |
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
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40 void psg_run(psg_context * context, uint32_t cycles); |
1909
508522f08e4d
Initial stab at VGM logging support
Michael Pavone <pavone@retrodev.com>
parents:
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41 void psg_vgm_log(psg_context *context, uint32_t master_clock, vgm_writer *vgm); |
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4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
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1002
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42 void psg_serialize(psg_context *context, serialize_buffer *buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1002
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43 void psg_deserialize(deserialize_buffer *buf, void *vcontext); |
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44 |
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Initial PSG support. Mostly works, noise channel is borked though.
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45 #endif //PSG_CONTEXT_H_ |
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Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
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46 |