/
modem.cpp
101 lines (73 loc) · 2.98 KB
/
modem.cpp
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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
BBC Master Internal Modem port
**********************************************************************/
#include "emu.h"
#include "modem.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(BBC_MODEM_SLOT, bbc_modem_slot_device, "bbc_modem_slot", "BBC Master Internal Modem port")
//**************************************************************************
// DEVICE BBC_MODEM PORT INTERFACE
//**************************************************************************
//-------------------------------------------------
// device_bbc_modem_interface - constructor
//-------------------------------------------------
device_bbc_modem_interface::device_bbc_modem_interface(const machine_config &mconfig, device_t &device) :
device_interface(device, "bbcmodem")
{
m_slot = dynamic_cast<bbc_modem_slot_device *>(device.owner());
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// bbc_modem_slot_device - constructor
//-------------------------------------------------
bbc_modem_slot_device::bbc_modem_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, BBC_MODEM_SLOT, tag, owner, clock)
, device_single_card_slot_interface<device_bbc_modem_interface>(mconfig, *this)
, m_card(nullptr)
, m_irq_handler(*this)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void bbc_modem_slot_device::device_start()
{
m_card = get_card_device();
}
//-------------------------------------------------
// read
//-------------------------------------------------
uint8_t bbc_modem_slot_device::read(offs_t offset)
{
if (m_card)
return m_card->read(offset & 0x0f);
else
return 0xfe;
}
//-------------------------------------------------
// write
//-------------------------------------------------
void bbc_modem_slot_device::write(offs_t offset, uint8_t data)
{
if (m_card)
m_card->write(offset & 0x0f, data);
}
//-------------------------------------------------
// SLOT_INTERFACE( bbcm_modem_devices )
//-------------------------------------------------
// slot devices
#include "meup.h"
#include "scsiaiv.h"
void bbcm_modem_devices(device_slot_interface &device)
{
device.option_add("meup", BBC_MEUP); /* Master Extra User Ports */
//device.option_add("modem", BBC_MODEM); /* Beebug Master Modem */
device.option_add("scsiaiv", BBC_SCSIAIV); /* Acorn AIV SCSI Host Adaptor */
//device.option_add("vp415", BBC_VP415); /* Philips VP415 */
}