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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
#ifndef MAME_MACHINE_NAMCO50_H
#define MAME_MACHINE_NAMCO50_H

#pragma once

#include "cpu/mb88xx/mb88xx.h"

/* device get info callback */
class namco_50xx_device : public device_t
{
public:
	namco_50xx_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	WRITE8_MEMBER( write );
	WRITE_LINE_MEMBER(read_request);
	READ8_MEMBER( read );

protected:
	// device-level overrides
	virtual void device_start() override;
	virtual const tiny_rom_entry *device_rom_region() const override;
	virtual void device_add_mconfig(machine_config &config) override;

	TIMER_CALLBACK_MEMBER( latch_callback );
	TIMER_CALLBACK_MEMBER( readrequest_callback );
	TIMER_CALLBACK_MEMBER( irq_clear );
	void irq_set();

private:
	// internal state
	required_device<mb88_cpu_device> m_cpu;
	uint8_t                   m_latched_cmd;
	uint8_t                   m_latched_rw;
	uint8_t                   m_portO;
	emu_timer * m_irq_cleared_timer;

	READ8_MEMBER( K_r );
	READ8_MEMBER( R0_r );
	READ8_MEMBER( R2_r );
	WRITE8_MEMBER( O_w );
};

DECLARE_DEVICE_TYPE(NAMCO_50XX, namco_50xx_device)

#endif // MAME_MACHINE_NAMCO50_H