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CLK/Machines/Atari/2600/Bus.hpp
2022-07-16 14:41:04 -04:00

72 lines
1.7 KiB
C++

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