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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/*************************************************************************

    Driver for Midway X-unit games.

**************************************************************************/

#include "machine/midwayic.h"

class midxunit_state : public midtunit_state
{
public:
	midxunit_state(const machine_config &mconfig, device_type type, const char *tag)
		: midtunit_state(mconfig, type, tag),
			m_nvram(*this, "nvram"),
			m_midway_serial_pic(*this, "serial_pic") { }

	DECLARE_READ16_MEMBER(midxunit_cmos_r);
	DECLARE_WRITE16_MEMBER(midxunit_cmos_w);
	DECLARE_WRITE16_MEMBER(midxunit_io_w);
	DECLARE_WRITE16_MEMBER(midxunit_unknown_w);
	DECLARE_WRITE_LINE_MEMBER(adc_int_w);
	DECLARE_READ16_MEMBER(midxunit_status_r);
	DECLARE_READ16_MEMBER(midxunit_uart_r);
	DECLARE_WRITE16_MEMBER(midxunit_uart_w);
	DECLARE_READ16_MEMBER(midxunit_security_r);
	DECLARE_WRITE16_MEMBER(midxunit_security_w);
	DECLARE_WRITE16_MEMBER(midxunit_security_clock_w);
	DECLARE_READ16_MEMBER(midxunit_sound_r);
	DECLARE_READ16_MEMBER(midxunit_sound_state_r);
	DECLARE_WRITE16_MEMBER(midxunit_sound_w);
	DECLARE_WRITE_LINE_MEMBER(midxunit_dcs_output_full);
	void init_revx();
	DECLARE_MACHINE_RESET(midxunit);
	DECLARE_VIDEO_START(midxunit);
	void register_state_saving();
	TMS340X0_SCANLINE_IND16_CB_MEMBER(scanline_update);

	void midxunit(machine_config &config);
	void main_map(address_map &map);
private:
	required_shared_ptr<uint16_t> m_nvram;
	required_device<midway_serial_pic_device> m_midway_serial_pic;
	uint8_t m_cmos_write_enable;
	uint16_t m_iodata[8];
	uint8_t m_ioshuffle[16];
	uint8_t m_uart[8];
	uint8_t m_security_bits;
	bool m_adc_int;
};