#ifndef PANASONICMEMORY_HH

#define PANASONICMEMORY_HH

#include "Rom.hh"

#include <cstdint>

#include <optional>

namespace openmsx {

class MSXMotherBoard;

class MSXCPU;

class Ram;

class PanasonicMemory

{

public:

	explicit PanasonicMemory(MSXMotherBoard& motherBoard);

	/**

	 * Pass reference of the actual Ram block for use in DRAM mode and RAM

	 * access via the ROM mapper. Note that this is always unchecked Ram!

	 */

	void registerRam(Ram& ram);

	[[nodiscard]] std::span<const uint8_t, 0x2000> getRomBlock(unsigned block) const;

	[[nodiscard]] std::span<const uint8_t> getRomRange(unsigned first, unsigned last) const;

	/**

	 * Note that this is always unchecked RAM! There is no UMR detection

	 * when accessing Ram in DRAM mode or via the ROM mapper!

	 */

	[[nodiscard]] uint8_t* getRamBlock(unsigned block);

	[[nodiscard]] unsigned getRamSize() const { return ramSize; }

	void setDRAM(bool dram);

	[[nodiscard]] bool isWritable(unsigned address) const;

private:

	MSXCPU& msxcpu;

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

	uint8_t* ram = nullptr;

	unsigned ramSize = 0;

	bool dram = false;

};

} // namespace openmsx

#endif