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// license:BSD-3-Clause
// copyright-holders:Fabio Priuli
/***********************************************************************************************************
Bally Astrocade Expansion port
***********************************************************************************************************/
#include "emu.h"
#include "exp.h"
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
const device_type ASTROCADE_EXP_SLOT = &device_creator<astrocade_exp_device>;
device_astrocade_card_interface::device_astrocade_card_interface(const machine_config &mconfig, device_t &device)
: device_slot_card_interface(mconfig, device)
{
}
device_astrocade_card_interface::~device_astrocade_card_interface()
{
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// astrocade_exp_device - constructor
//-------------------------------------------------
astrocade_exp_device::astrocade_exp_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
device_t(mconfig, ASTROCADE_EXP_SLOT, "Bally Astrocade expansion", tag, owner, clock, "astrocde_exp", __FILE__),
device_slot_interface(mconfig, *this),
m_card_mounted(false)
{
}
//-------------------------------------------------
// astrocade_exp_device - destructor
//-------------------------------------------------
astrocade_exp_device::~astrocade_exp_device()
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void astrocade_exp_device::device_start()
{
m_card = dynamic_cast<device_astrocade_card_interface *>(get_card_device());
if (m_card)
m_card_mounted = true;
}
/*-------------------------------------------------
read
-------------------------------------------------*/
READ8_MEMBER(astrocade_exp_device::read)
{
if (m_card)
return m_card->read(space, offset);
else
return 0xff;
}
/*-------------------------------------------------
write
-------------------------------------------------*/
WRITE8_MEMBER(astrocade_exp_device::write)
{
if (m_card)
m_card->write(space, offset, data);
}
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