Mercurial > repos > blastem
view psg.h @ 1925:039553703c20
Don't apply address and cd register changes to the 'live' registers until pending flag is cleared, but do preserve the upper address bits in the latch. Fixes regression in Overdrive 2 while preserving fix to Mona in 344 bytes
author | Michael Pavone <pavone@retrodev.com> |
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date | Mon, 13 Apr 2020 20:43:25 -0700 |
parents | 508522f08e4d |
children | 2648081f3100 |
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/* Copyright 2013 Michael Pavone This file is part of BlastEm. BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. */ #ifndef PSG_CONTEXT_H_ #define PSG_CONTEXT_H_ #include <stdint.h> #include "serialize.h" #include "render_audio.h" #include "vgm.h" typedef struct { audio_source *audio; vgm_writer *vgm; uint32_t clock_inc; uint32_t cycles; uint16_t lsfr; uint16_t counter_load[4]; uint16_t counters[4]; uint8_t volume[4]; uint8_t output_state[4]; uint8_t noise_out; uint8_t noise_use_tone; uint8_t noise_type; uint8_t latch; } psg_context; void psg_init(psg_context * context, uint32_t master_clock, uint32_t clock_div); void psg_free(psg_context *context); void psg_adjust_master_clock(psg_context * context, uint32_t master_clock); void psg_write(psg_context * context, uint8_t value); void psg_run(psg_context * context, uint32_t cycles); void psg_vgm_log(psg_context *context, uint32_t master_clock, vgm_writer *vgm); void psg_serialize(psg_context *context, serialize_buffer *buf); void psg_deserialize(deserialize_buffer *buf, void *vcontext); #endif //PSG_CONTEXT_H_