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// license:BSD-3-Clause
// copyright-holders:Angelo Salese
/***************************************************************************
v3021.h
EM Microelectronic-Marin SA Ultra Low Power 32kHz CMOS RTC (DIP8)
Serial Real Time Clock
***************************************************************************/
#ifndef MAME_MACHINE_V3021_H
#define MAME_MACHINE_V3021_H
#pragma once
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_V3021_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, V3021, XTAL(32'768))
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> v3021_device
class v3021_device : public device_t
{
public:
// construction/destruction
v3021_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// I/O operations
DECLARE_WRITE8_MEMBER( write );
DECLARE_READ8_MEMBER( read );
TIMER_CALLBACK_MEMBER(timer_callback);
protected:
struct rtc_regs_t
{
uint8_t sec, min, hour, day, wday, month, year;
};
// device-level overrides
virtual void device_validity_check(validity_checker &valid) const override;
virtual void device_start() override;
virtual void device_reset() override;
uint8_t m_cal_mask,m_cal_com,m_cal_cnt,m_cal_val;
rtc_regs_t m_rtc;
emu_timer *m_timer;
};
// device type definition
DECLARE_DEVICE_TYPE(V3021, v3021_device)
#endif // MAME_MACHINE_V3021_H
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