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

    Sega Master System "Graphic Board" emulation

    Copyright MESS Team.
    Visit http://mamedev.org for licensing and usage restrictions.

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

#pragma once

#ifndef __SMS_GRAPHIC__
#define __SMS_GRAPHIC__


#include "emu.h"
#include "smsctrl.h"



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

// ======================> sms_graphic_device

class sms_graphic_device : public device_t,
							public device_sms_control_port_interface
{
public:
	// construction/destruction
	sms_graphic_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);

	// optional information overrides
	virtual ioport_constructor device_input_ports() const;

protected:
	// device-level overrides
	virtual void device_start();

	// device_sms_control_port_interface overrides
	virtual UINT8 peripheral_r();
	virtual void peripheral_w(UINT8 data);

private:
	required_ioport m_buttons;
	required_ioport m_x;
	required_ioport m_y;

	int m_index;
	UINT8 m_previous_write;
	UINT8 m_pressure;
};


// device type definition
extern const device_type SMS_GRAPHIC;


#endif