#ifndef MSXMEGARAM_HH

#define MSXMEGARAM_HH

#include "MSXDevice.hh"

#include "Ram.hh"

#include "RomBlockDebuggable.hh"

#include <array>

#include <memory>

namespace openmsx {

class Rom;

class MSXMegaRam final : public MSXDevice

{

public:

	explicit MSXMegaRam(DeviceConfig& config);

	~MSXMegaRam() override;

	void powerUp(EmuTime time) override;

	void reset(EmuTime time) override;

	[[nodiscard]] byte readMem(uint16_t address, EmuTime time) override;

	[[nodiscard]] const byte* getReadCacheLine(uint16_t address) const override;

	void writeMem(uint16_t address, byte value,

	              EmuTime time) override;

	[[nodiscard]] byte* getWriteCacheLine(uint16_t address) override;

	[[nodiscard]] byte readIO(uint16_t port, EmuTime time) override;

	[[nodiscard]] byte peekIO(uint16_t port, EmuTime time) const override;

	void writeIO(uint16_t port, byte value, EmuTime time) override;

	template<typename Archive>

	void serialize(Archive& ar, unsigned version);

private:

	void setBank(byte page, byte block);

private:

	const unsigned numBlocks; // must come before ram

	Ram ram;

	const std::unique_ptr<Rom> rom; // can be nullptr

	RomBlockDebuggable romBlockDebug;

	const byte maskBlocks;

	std::array<byte, 4> bank;

	bool writeMode;

	bool romMode;

};

} // namespace openmsx

#endif