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// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
#ifndef MAME_BUS_MSX_SLOT_SONY08_H
#define MAME_BUS_MSX_SLOT_SONY08_H

#pragma once

#include "slot.h"
#include "machine/nvram.h"


extern const device_type MSX_SLOT_SONY08;


#define MCFG_MSX_SLOT_SONY08_ADD(_tag, _startpage, _numpages, _region, _offset) \
	MCFG_MSX_INTERNAL_SLOT_ADD(_tag, MSX_SLOT_SONY08, _startpage, _numpages) \
	downcast<msx_slot_sony08_device &>(*device).set_rom_start("^" _region, _offset);

class msx_slot_sony08_device : public device_t,
							public msx_internal_slot_interface
{
public:
	msx_slot_sony08_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	// configuration helpers
	void set_rom_start(const char *region, uint32_t offset) { m_rom_region.set_tag(region); m_region_offset = offset; }

	virtual DECLARE_READ8_MEMBER(read) override;
	virtual DECLARE_WRITE8_MEMBER(write) override;

protected:
	virtual void device_start() override;

	virtual void device_add_mconfig(machine_config &config) override;

	void restore_banks();

private:
	required_device<nvram_device> m_nvram;
	required_memory_region m_rom_region;
	uint32_t m_region_offset;
	const uint8_t *m_rom;
	uint8_t m_selected_bank[8];
	const uint8_t *m_bank_base[8];
	uint8_t m_sram[0x4000];

	void map_bank(int bank);
};


#endif // MAME_BUS_MSX_SLOT_SONY08_H