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/*********************************************************************
tvcexp.c
*********************************************************************/
#include "emu.h"
#include "tvcexp.h"
#include "emuopts.h"
/***************************************************************************
PARAMETERS
***************************************************************************/
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
const device_type TVCEXP_SLOT = &device_creator<tvcexp_slot_device>;
//**************************************************************************
// TVC Expansion Interface
//**************************************************************************
//-------------------------------------------------
// device_tvcexp_interface - constructor
//-------------------------------------------------
device_tvcexp_interface::device_tvcexp_interface(const machine_config &mconfig, device_t &device)
: device_slot_card_interface(mconfig, device)
{
}
//-------------------------------------------------
// ~device_tvcexp_interface - destructor
//-------------------------------------------------
device_tvcexp_interface::~device_tvcexp_interface()
{
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// tvcexp_slot_device - constructor
//-------------------------------------------------
tvcexp_slot_device::tvcexp_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
device_t(mconfig, TVCEXP_SLOT, "TVC64 Expansion Slot", tag, owner, clock),
device_slot_interface(mconfig, *this)
{
}
//-------------------------------------------------
// tvcexp_slot_device - destructor
//-------------------------------------------------
tvcexp_slot_device::~tvcexp_slot_device()
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void tvcexp_slot_device::device_start()
{
m_cart = dynamic_cast<device_tvcexp_interface *>(get_card_device());
// resolve callbacks
m_out_irq_func.resolve(m_out_irq_cb, *this);
m_out_nmi_func.resolve(m_out_nmi_cb, *this);
}
//-------------------------------------------------
// device_config_complete - perform any
// operations now that the configuration is
// complete
//-------------------------------------------------
void tvcexp_slot_device::device_config_complete()
{
// inherit a copy of the static data
const tvcexp_interface *intf = reinterpret_cast<const tvcexp_interface *>(static_config());
if (intf != NULL)
{
*static_cast<tvcexp_interface *>(this) = *intf;
}
// or initialize to defaults if none provided
else
{
memset(&m_out_irq_cb, 0, sizeof(m_out_irq_cb));
memset(&m_out_nmi_cb, 0, sizeof(m_out_nmi_cb));
}
}
/*-------------------------------------------------
module id read
-------------------------------------------------*/
UINT8 tvcexp_slot_device::id_r()
{
UINT8 result = 0x00;
if (m_cart)
result = m_cart->id_r() & 0x03;
return result;
}
/*-------------------------------------------------
module interrupt ack
-------------------------------------------------*/
void tvcexp_slot_device::int_ack()
{
if (m_cart)
m_cart->int_ack();
}
/*-------------------------------------------------
module int read
-------------------------------------------------*/
UINT8 tvcexp_slot_device::int_r()
{
UINT8 result = 1;
if (m_cart)
result = m_cart->int_r() & 0x01;
return result;
}
/*-------------------------------------------------
read
-------------------------------------------------*/
READ8_MEMBER(tvcexp_slot_device::read)
{
if (m_cart)
return m_cart->read(space, offset);
else
return 0x00;
}
/*-------------------------------------------------
write
-------------------------------------------------*/
WRITE8_MEMBER(tvcexp_slot_device::write)
{
if (m_cart)
m_cart->write(space, offset, data);
}
/*-------------------------------------------------
IO read
-------------------------------------------------*/
READ8_MEMBER(tvcexp_slot_device::io_read)
{
if (m_cart)
return m_cart->io_read(space, offset);
else
return 0x00;
}
/*-------------------------------------------------
IO write
-------------------------------------------------*/
WRITE8_MEMBER(tvcexp_slot_device::io_write)
{
if (m_cart)
m_cart->io_write(space, offset, data);
}
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