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// license:BSD-3-Clause
// copyright-holders:Angelo Salese
/***************************************************************************

  SH7604 SCI Controller

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

#ifndef MAME_CPU_SH2_SH7604_SCI_H
#define MAME_CPU_SH2_SH7604_SCI_H

#pragma once



//**************************************************************************
//  TYPE DEFINITIONS
//**************************************************************************

// ======================> sh7604_sci_device

class sh7604_sci_device : public device_t
{
public:
	// construction/destruction
	sh7604_sci_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	// I/O operations
	void sci_regs(address_map &map);

	DECLARE_WRITE8_MEMBER( write );
	DECLARE_READ8_MEMBER( read );

	DECLARE_READ8_MEMBER( serial_mode_r );
	DECLARE_WRITE8_MEMBER( serial_mode_w );
	DECLARE_READ8_MEMBER( bitrate_r );
	DECLARE_WRITE8_MEMBER( bitrate_w );
	DECLARE_READ8_MEMBER( serial_control_r );
	DECLARE_WRITE8_MEMBER( serial_control_w );

	DECLARE_READ8_MEMBER( transmit_data_r );
	DECLARE_WRITE8_MEMBER( transmit_data_w );
	DECLARE_READ8_MEMBER( serial_status_r );
	DECLARE_WRITE8_MEMBER( serial_ack_w );
	DECLARE_READ8_MEMBER( receive_data_r );

protected:
	enum {
		STATUS_MPBT = 1 << 0,
		STATUS_MPB =  1 << 1,
		STATUS_TEND = 1 << 2,
		STATUS_PER =  1 << 3,
		STATUS_FER =  1 << 4,
		STATUS_ORER = 1 << 5,
		STATUS_RDRF = 1 << 6,
		STATUS_TDRE = 1 << 7
	};

	// device-level overrides
//  virtual void device_validity_check(validity_checker &valid) const;
	virtual void device_start() override;
	virtual void device_reset() override;

private:
	const address_space_config      m_space_config;
	uint8_t m_smr;
	uint8_t m_scr;
	uint8_t m_ssr;
	uint8_t m_brr;
};


// device type definition
DECLARE_DEVICE_TYPE(SH7604_SCI, sh7604_sci_device)

#endif // MAME_CPU_SH2_SH7604_SCI_H