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// license:BSD-3-Clause
// copyright-holders:Sandro Ronco
/**********************************************************************
Hitachi HD64610 Real Time Clock
**********************************************************************
_____ _____
GND 1 |* \_/ | 24 Vcc
H-Start/Stop 2 | | 23 OSC2
_IRQ 3 | | 22 OSC1
1Hz 4 | HD64610 | 21 GND
A3 5 | | 20 _WE
A2 6 | | 19 _OE
A1 7 | | 18 _CS
A0 8 | | 17 I/O8
I/O1 9 | | 16 I/O7
I/O2 10 | | 15 I/O6
I/O3 11 | | 14 I/O5
GND 12 |_____________| 13 I/O4
**********************************************************************/
#ifndef MAME_MACHINE_HD64610_H
#define MAME_MACHINE_HD64610_H
#pragma once
#include "dirtc.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_HD64610_OUT_IRQ_CB(_devcb) \
devcb = &downcast<hd64610_device &>(*device).set_out_irq_callback(DEVCB_##_devcb);
#define MCFG_HD64610_OUT_1HZ_CB(_devcb) \
devcb = &downcast<hd64610_device &>(*device).set_out_1hz_callback(DEVCB_##_devcb);
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> hd64610_device
class hd64610_device : public device_t,
public device_rtc_interface,
public device_nvram_interface
{
public:
// construction/destruction
hd64610_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
template <class Object> devcb_base &set_out_irq_callback(Object &&cb) { return m_out_irq_cb.set_callback(std::forward<Object>(cb)); }
template <class Object> devcb_base &set_out_1hz_callback(Object &&cb) { return m_out_1hz_cb.set_callback(std::forward<Object>(cb)); }
DECLARE_READ8_MEMBER( read );
DECLARE_WRITE8_MEMBER( write );
// hardware start/stop line
DECLARE_WRITE_LINE_MEMBER( h_w );
protected:
// device-level overrides
virtual void device_start() 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;
// device_nvram_interface overrides
virtual void nvram_default() override;
virtual void nvram_read(emu_file &file) override;
virtual void nvram_write(emu_file &file) override;
private:
inline void set_irq_line();
inline uint8_t read_counter(int counter);
inline void write_counter(int counter, uint8_t value);
inline void check_alarm();
static const device_timer_id TIMER_UPDATE_COUNTER = 0;
devcb_write_line m_out_irq_cb;
devcb_write_line m_out_1hz_cb;
uint8_t m_regs[0x10]; // Internal registers
int m_hline_state; // H-Start/Stop line
int m_irq_out; // alarm output
// timers
emu_timer *m_counter_timer;
};
// device type definition
DECLARE_DEVICE_TYPE(HD64610, hd64610_device)
#endif // MAME_MACHINE_HD64610_H
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