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// license:BSD-3-Clause
// copyright-holders:Fabio Priuli
/**********************************************************************

    Mattel Intellivision controller port emulation

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

#include "ctrl.h"
// slot devices
#include "handctrl.h"


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

const device_type INTV_CONTROL_PORT = &device_creator<intv_control_port_device>;


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

//-------------------------------------------------
//  device_intv_control_port_interface - constructor
//-------------------------------------------------

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


//-------------------------------------------------
//  ~device_intv_control_port_interface - destructor
//-------------------------------------------------

device_intv_control_port_interface::~device_intv_control_port_interface()
{
}


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

//-------------------------------------------------
//  intv_control_port_device - constructor
//-------------------------------------------------

intv_control_port_device::intv_control_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
						device_t(mconfig, INTV_CONTROL_PORT, "Mattel Intellivision control port", tag, owner, clock, "intv_control_port", __FILE__),
						device_slot_interface(mconfig, *this), m_device(nullptr)
{
}


//-------------------------------------------------
//  intv_control_port_device - destructor
//-------------------------------------------------

intv_control_port_device::~intv_control_port_device()
{
}


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

void intv_control_port_device::device_start()
{
	m_device = dynamic_cast<device_intv_control_port_interface *>(get_card_device());
}


UINT8 intv_control_port_device::read_ctrl()
{
	UINT8 data = 0;
	if (m_device)
		data |= m_device->read_ctrl();
	return data;
}


//-------------------------------------------------
//  SLOT_INTERFACE( intv_control_port_devices )
//-------------------------------------------------

SLOT_INTERFACE_START( intv_control_port_devices )
	SLOT_INTERFACE("handctrl", INTV_HANDCTRL)
SLOT_INTERFACE_END