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// license:BSD-3-Clause
// copyright-holders:Tim Lindner
/*********************************************************************
ds1315.h
Dallas Semiconductor's Phantom Time Chip DS1315.
by tim lindner, November 2001.
*********************************************************************/
#ifndef __DS1315_H__
#define __DS1315_H__
#include "emu.h"
/***************************************************************************
MACROS
***************************************************************************/
enum ds1315_mode_t
{
DS_SEEK_MATCHING,
DS_CALENDAR_IO
};
ALLOW_SAVE_TYPE(ds1315_mode_t);
class ds1315_device : public device_t
{
public:
ds1315_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
~ds1315_device() {}
DECLARE_READ8_MEMBER(read_0);
DECLARE_READ8_MEMBER(read_1);
DECLARE_READ8_MEMBER(read_data);
DECLARE_READ8_MEMBER(write_data);
bool chip_enable();
void chip_reset();
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_start();
virtual void device_reset();
private:
// internal state
ds1315_mode_t m_mode;
void fill_raw_data();
void input_raw_data();
int m_count;
UINT8 m_raw_data[8*8];
};
extern const device_type DS1315;
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#define MCFG_DS1315_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, DS1315, 0)
#endif /* __DS1315_H__ */
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