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// license:BSD-3-Clause
// copyright-holders:R. Belmont,Carl
/**********************************************************************
cdp1879.h - RCA CDP1879 real-time clock emulation
**********************************************************************/
#pragma once
#ifndef __CDP1879_H__
#define __CDP1879_H__
#include "dirtc.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_CDP1879_IRQ_CALLBACK(_cb) \
devcb = &cdp1879_device::set_irq_cb(*device, DEVCB_##_cb);
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> cdp1879_device
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, uint32_t clock);
DECLARE_READ8_MEMBER(read);
DECLARE_WRITE8_MEMBER(write);
template<class _Object> static devcb_base &set_irq_cb(device_t &device, _Object wr) { return downcast<cdp1879_device &>(device).m_irq_w.set_callback(wr); }
devcb_write_line m_irq_w;
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) 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();
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
};
u8 m_regs[10];
bool m_comparator_state;
// timers
emu_timer *m_clock_timer;
};
// device type definition
extern const device_type CDP1879;
#endif
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