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

    Sega Saturn Controller Port emulation

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

#include "emu.h"
#include "ctrl.h"

// slot devices
#include "analog.h"
#include "joy.h"
#include "joy_md.h"
#include "keybd.h"
#include "mouse.h"
#include "multitap.h"
#include "pointer.h"
#include "racing.h"
#include "segatap.h"


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

DEFINE_DEVICE_TYPE(SATURN_CONTROL_PORT, saturn_control_port_device, "saturn_control_port", "Sega Saturn controller port")


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

//-------------------------------------------------
//  device_saturn_control_port_interface - constructor
//-------------------------------------------------

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


//-------------------------------------------------
//  ~device_saturn_control_port_interface - destructor
//-------------------------------------------------

device_saturn_control_port_interface::~device_saturn_control_port_interface()
{
}


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

//-------------------------------------------------
//  saturn_control_port_device - constructor
//-------------------------------------------------

saturn_control_port_device::saturn_control_port_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
	device_t(mconfig, SATURN_CONTROL_PORT, tag, owner, clock),
	device_slot_interface(mconfig, *this), m_device(nullptr)
{
}


//-------------------------------------------------
//  ~saturn_control_port_device - destructor
//-------------------------------------------------

saturn_control_port_device::~saturn_control_port_device()
{
}


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

void saturn_control_port_device::device_start()
{
	m_device = dynamic_cast<device_saturn_control_port_interface *>(get_card_device());
}


uint8_t saturn_control_port_device::read_status()
{
	uint8_t data = 0;
	if (m_device)
		data |= m_device->read_status();
	return data;
}

// Notice that the variable idx is only used by the multitap / segatap adapters
// Otherwise, any value is ignored and the unique controller ID is returned
uint8_t saturn_control_port_device::read_id(int idx)
{
	uint8_t data = 0;
	if (m_device)
		data |= m_device->read_id(idx);
	return data;
}

uint8_t saturn_control_port_device::read_ctrl(uint8_t offset)
{
	uint8_t data = 0;
	if (m_device)
		data |= m_device->read_ctrl(offset);
	return data;
}

uint16_t saturn_control_port_device::read_direct()
{
	uint16_t data = 0;
	if (m_device)
		data |= m_device->read_direct();
	return data;
}


//-------------------------------------------------
//  SLOT_INTERFACE( saturn_controls )
//-------------------------------------------------

void saturn_controls(device_slot_interface &device)
{
	device.option_add("joypad",    SATURN_JOY);
	device.option_add("racing",    SATURN_WHEEL);
	device.option_add("analog",    SATURN_ANALOG);
//  device.option_add("lightgun",  SATURN_LIGHTGUN);
	device.option_add("trackball", SATURN_TRACK);
	device.option_add("keyboard",  SATURN_KEYBD);
	device.option_add("joy_md3",   SATURN_JOYMD3B);
	device.option_add("joy_md6",   SATURN_JOYMD6B);
	device.option_add("mouse",     SATURN_MOUSE);
	device.option_add("multitap",  SATURN_MULTITAP);
	device.option_add("segatap",   SATURN_SEGATAP);
}

void saturn_joys(device_slot_interface &device)
{
	device.option_add("joypad",    SATURN_JOY);
}