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72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
//
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// Bus.h
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// Clock Signal
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//
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// Created by Thomas Harte on 18/03/2017.
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// Copyright 2017 Thomas Harte. All rights reserved.
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//
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#ifndef Atari2600_Bus_hpp
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#define Atari2600_Bus_hpp
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#include "Atari2600.hpp"
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#include "PIA.hpp"
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#include "TIA.hpp"
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#include "TIASound.hpp"
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#include "../../../Analyser/Dynamic/ConfidenceCounter.hpp"
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#include "../../../ClockReceiver/ClockReceiver.hpp"
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#include "../../../Outputs/Speaker/Implementation/LowpassSpeaker.hpp"
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namespace Atari2600 {
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class Bus {
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public:
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Bus() :
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tia_sound_(audio_queue_),
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speaker_(tia_sound_) {}
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virtual ~Bus() {
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audio_queue_.flush();
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}
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virtual void run_for(const Cycles cycles) = 0;
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virtual void apply_confidence(Analyser::Dynamic::ConfidenceCounter &confidence_counter) = 0;
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virtual void set_reset_line(bool state) = 0;
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virtual void flush() = 0;
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// the RIOT, TIA and speaker
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PIA mos6532_;
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TIA tia_;
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Concurrency::DeferringAsyncTaskQueue audio_queue_;
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TIASound tia_sound_;
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Outputs::Speaker::PullLowpass<TIASound> speaker_;
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// joystick state
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uint8_t tia_input_value_[2] = {0xff, 0xff};
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protected:
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// speaker backlog accumlation counter
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Cycles cycles_since_speaker_update_;
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inline void update_audio() {
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speaker_.run_for(audio_queue_, cycles_since_speaker_update_.divide(Cycles(CPUTicksPerAudioTick * 3)));
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}
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// video backlog accumulation counter
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Cycles cycles_since_video_update_;
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inline void update_video() {
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tia_.run_for(cycles_since_video_update_.flush<Cycles>());
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}
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// RIOT backlog accumulation counter
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Cycles cycles_since_6532_update_;
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inline void update_6532() {
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mos6532_.run_for(cycles_since_6532_update_.flush<Cycles>());
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}
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};
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}
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#endif /* Atari2600_Bus_hpp */
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