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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
ETI Real Time Clock/Calendar
http://www.microtan.ukpc.net/pageProducts.html#CLOCK
**********************************************************************/
#include "emu.h"
#include "etirtc.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(TANBUS_ETIRTC, tanbus_etirtc_device, "tanbus_etirtc", "Microtan ETI Real Time Clock")
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
void tanbus_etirtc_device::device_add_mconfig(machine_config &config)
{
MM58174(config, "rtc", 32.768_kHz_XTAL);
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// tanbus_etirtc_device - constructor
//-------------------------------------------------
tanbus_etirtc_device::tanbus_etirtc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, TANBUS_ETIRTC, tag, owner, clock)
, device_tanbus_interface(mconfig, *this)
, m_rtc(*this, "rtc")
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void tanbus_etirtc_device::device_start()
{
}
//-------------------------------------------------
// read - card read
//-------------------------------------------------
uint8_t tanbus_etirtc_device::read(offs_t offset, int inhrom, int inhram, int be)
{
uint8_t data = 0xff;
switch (offset & 0xfff0)
{
case 0xbc00:
data = m_rtc->read(offset);
break;
}
return data;
}
//-------------------------------------------------
// write - card write
//-------------------------------------------------
void tanbus_etirtc_device::write(offs_t offset, uint8_t data, int inhrom, int inhram, int be)
{
switch (offset & 0xfff0)
{
case 0xbc00:
m_rtc->write(offset, data);
break;
}
}
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