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// license:BSD-3-Clause
// copyright-holders:R. Belmont,Carl
/**********************************************************************
cdp1879.h - RCA CDP1879 real-time clock emulation
**********************************************************************/
#ifndef MAME_MACHINE_CDP1879_H
#define MAME_MACHINE_CDP1879_H
#pragma once
#include "dirtc.h"
class cdp1879_device : public device_t,
public device_rtc_interface
{
public:
// construction/destruction
cdp1879_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock);
uint8_t read(offs_t offset);
void write(offs_t offset, uint8_t data);
auto irq_callback() { return m_irq_w.bind(); }
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// device_rtc_interface overrides
virtual void rtc_clock_updated(int year, int month, int day, int day_of_week, int hour, int minute, int second) override;
virtual bool rtc_feature_leap_year() const override { return true; }
void set_irq(int bit);
void update_rtc();
TIMER_CALLBACK_MEMBER(clock_tick);
private:
// registers
enum
{
R_CNT_SECONDS = 2, // 2 = seconds
R_CNT_MINUTES, // 3 = minutes
R_CNT_HOURS, // 4 = hours
R_CNT_DAYOFMONTH, // 5 = day of the month
R_CNT_MONTH, // 6 = month
R_CTL_IRQSTATUS = 7, // 7 = IRQ status
R_CTL_CONTROL = 7, // 7 = IRQ control
R_ALM_SECONDS,
R_ALM_MINUTES,
R_ALM_HOURS
};
devcb_write_line m_irq_w;
u8 m_regs[11];
bool m_comparator_state;
// timers
emu_timer *m_clock_timer;
};
// device type definition
DECLARE_DEVICE_TYPE(CDP1879, cdp1879_device)
#endif // MAME_MACHINE_CDP1879_H
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