a22b17b2c1
In hardware, the audio from the 2A03 APU pins go through an inverted preamp using one of the 74HCU04 inverter chips in the motherboard. Though this may be cost-effective on Nintendo's part, the signals on the hex inverter chip can interfere with one another, especially on the audio. This can be heard as a buzz or a high pitched whine. The only known signals to interfere with the audio so far is: - /A13, the inverted signal of PPU A13 going into the cartridge connector. - /OE1, Output enable for controller reads, though this is only found present on the RF Famicom.
89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
#pragma once
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#include "stdafx.h"
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#include "../Utilities/SimpleLock.h"
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#include "IMemoryHandler.h"
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#include "Snapshotable.h"
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class BaseControlDevice;
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class Zapper;
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class SystemActionManager;
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class IInputRecorder;
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class IInputProvider;
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class Console;
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struct ControlDeviceState;
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enum class ControllerType;
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enum class ExpansionPortDevice;
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class ControlManager : public Snapshotable, public IMemoryHandler
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{
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private:
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vector<IInputRecorder*> _inputRecorders;
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vector<IInputProvider*> _inputProviders;
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//Static so that power cycle does not reset its value
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uint32_t _pollCounter;
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shared_ptr<BaseControlDevice> _mapperControlDevice;
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uint32_t _lagCounter = 0;
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bool _isLagging = false;
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protected:
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shared_ptr<Console> _console;
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SimpleLock _deviceLock;
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vector<shared_ptr<BaseControlDevice>> _controlDevices;
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shared_ptr<BaseControlDevice> _systemActionManager;
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void RegisterControlDevice(shared_ptr<BaseControlDevice> controlDevice);
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virtual void StreamState(bool saving) override;
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virtual ControllerType GetControllerType(uint8_t port);
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virtual void RemapControllerButtons();
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virtual uint8_t GetOpenBusMask(uint8_t port);
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public:
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uint8_t _OE1pinLow;
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uint16_t _address;
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bool _strobed;
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ControlManager(shared_ptr<Console> console, shared_ptr<BaseControlDevice> systemActionManager, shared_ptr<BaseControlDevice> mapperControlDevice);
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virtual ~ControlManager();
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virtual void UpdateControlDevices();
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void UpdateInputState();
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uint32_t GetLagCounter();
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void ResetLagCounter();
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uint32_t GetPollCounter();
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void SetPollCounter(uint32_t value);
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virtual void Reset(bool softReset);
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void RegisterInputProvider(IInputProvider* provider);
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void UnregisterInputProvider(IInputProvider* provider);
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void RegisterInputRecorder(IInputRecorder* recorder);
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void UnregisterInputRecorder(IInputRecorder* recorder);
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vector<ControlDeviceState> GetPortStates();
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shared_ptr<BaseControlDevice> GetControlDevice(uint8_t port);
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vector<shared_ptr<BaseControlDevice>> GetControlDevices();
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bool HasKeyboard();
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static shared_ptr<BaseControlDevice> CreateControllerDevice(ControllerType type, uint8_t port, shared_ptr<Console> console);
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static shared_ptr<BaseControlDevice> CreateExpansionDevice(ExpansionPortDevice type, shared_ptr<Console> console);
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virtual void GetMemoryRanges(MemoryRanges &ranges) override
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{
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ranges.AddHandler(MemoryOperation::Read, 0x4016, 0x4017);
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ranges.AddHandler(MemoryOperation::Write, 0x4016);
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}
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virtual uint8_t ReadRAM(uint16_t addr) override;
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virtual void WriteRAM(uint16_t addr, uint8_t value) override;
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void GetInvOE1(uint16_t addr);
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};
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