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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Microelectronic-Marin E050-16 Real Time Clock emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************
_____ _____
Vdd1 1 |* \_/ | 16 Vdd2
OSC IN 2 | | 15 Clk
OSC OUT 3 | | 14 XOUT
_STOP 4 | E05-16 | 13 DI/O
_RESET 5 | E050-16 | 12 _SEC
_OUTSEL 6 | | 11 _MIN
_DAY 7 | | 10 _HRS
Vss 8 |_____________| 9 _CS
**********************************************************************/
#pragma once
#ifndef __E0516__
#define __E0516__
#include "emu.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_E0516_ADD(_tag, _clock) \
MCFG_DEVICE_ADD(_tag, E0516, _clock)
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> e0516_device
class e0516_device : public device_t,
public device_rtc_interface
{
public:
// construction/destruction
e0516_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
DECLARE_WRITE_LINE_MEMBER( cs_w );
DECLARE_WRITE_LINE_MEMBER( clk_w );
DECLARE_WRITE_LINE_MEMBER( dio_w );
DECLARE_READ_LINE_MEMBER( dio_r );
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
private:
int m_cs; // chip select
int m_clk; // clock
int m_data_latch; // data latch
int m_reg_latch; // register latch
int m_read_write; // read/write data
int m_state; // state
int m_bits; // number of bits transferred
int m_dio; // data pin
// timers
emu_timer *m_timer;
};
// device type definition
extern const device_type E0516;
#endif
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