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

    Sega Master System controller port emulation

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

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

#include "machine/smsctrl.h"



//**************************************************************************
//  GLOBAL VARIABLES
//**************************************************************************

const device_type SMS_CONTROL_PORT = &device_creator<sms_control_port_device>;



//**************************************************************************
//  CARD INTERFACE
//**************************************************************************

//-------------------------------------------------
//  device_sms_control_port_interface - constructor
//-------------------------------------------------

device_sms_control_port_interface::device_sms_control_port_interface(const machine_config &mconfig, device_t &device)
	: device_slot_card_interface(mconfig,device)
{
	m_port = dynamic_cast<sms_control_port_device *>(device.owner());
}


//-------------------------------------------------
//  ~device_sms_control_port_interface - destructor
//-------------------------------------------------

device_sms_control_port_interface::~device_sms_control_port_interface()
{
}



//**************************************************************************
//  LIVE DEVICE
//**************************************************************************

//-------------------------------------------------
//  sms_control_port_device - constructor
//-------------------------------------------------

sms_control_port_device::sms_control_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
						device_t(mconfig, SMS_CONTROL_PORT, "Sega SMS control port", tag, owner, clock, "sms_control_port", __FILE__),
						device_slot_interface(mconfig, *this),
						m_th_pin_handler(*this),
						m_pixel_handler(*this)
{
}


//-------------------------------------------------
//  sms_control_port_device - destructor
//-------------------------------------------------

sms_control_port_device::~sms_control_port_device()
{
}


//-------------------------------------------------
//  device_start - device-specific startup
//-------------------------------------------------

void sms_control_port_device::device_start()
{
	m_device = dynamic_cast<device_sms_control_port_interface *>(get_card_device());
	
	m_th_pin_handler.resolve_safe();
	m_pixel_handler.resolve_safe(0);
}


UINT8 sms_control_port_device::port_r() 
{ 
	UINT8 data = 0xff; 
	if (m_device) 
		data = m_device->peripheral_r(); 
	return data; 
}

void sms_control_port_device::port_w( UINT8 data ) 
{ 
	if (m_device) 
		m_device->peripheral_w(data); 
}


void sms_control_port_device::th_pin_w(int state)
{
	m_th_pin_handler(state);
}

UINT32 sms_control_port_device::pixel_r()
{
	return m_pixel_handler();
}


//-------------------------------------------------
//  SLOT_INTERFACE( sms_control_port_devices )
//-------------------------------------------------

SLOT_INTERFACE_START( sms_control_port_devices )
	SLOT_INTERFACE("joypad", SMS_JOYPAD)
	SLOT_INTERFACE("lphaser", SMS_LIGHT_PHASER)
	SLOT_INTERFACE("paddle", SMS_PADDLE)
	SLOT_INTERFACE("sportspad", SMS_SPORTS_PAD)
	SLOT_INTERFACE("rapidfire", SMS_RAPID_FIRE)
SLOT_INTERFACE_END