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/***************************************************************************
MSM6242 Real Time Clock
Copyright Nicola Salmoria and the MAME Team.
Visit http://mamedev.org for licensing and usage restrictions.
***************************************************************************/
#pragma once
#ifndef __MSM6242DEV_H__
#define __MSM6242DEV_H__
#include "emu.h"
#include "machine/devhelpr.h"
#define MCFG_MSM6242_ADD(_tag, _config) \
MCFG_DEVICE_ADD(_tag, msm6242, XTAL_32_768kHz) \
MCFG_DEVICE_CONFIG(_config)
#define MSM6242_INTERFACE(name) \
const msm6242_interface (name) =
// ======================> msm6242_interface
struct msm6242_interface
{
devcb_write_line m_out_int_cb;
};
struct rtc_regs_t
{
UINT8 sec, min, hour, day, wday, month;
UINT16 year;
};
// ======================> msm6242_device
class msm6242_device : public device_t,
public msm6242_interface
{
public:
// construction/destruction
msm6242_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// I/O operations
DECLARE_WRITE8_MEMBER( write );
DECLARE_READ8_MEMBER( read );
void rtc_timer_callback();
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_validity_check(validity_checker &valid) const;
virtual void device_start();
virtual void device_reset();
static TIMER_CALLBACK( rtc_inc_callback );
private:
UINT8 m_reg[3];
UINT8 m_irq_flag;
UINT8 m_irq_type;
UINT16 m_tick;
rtc_regs_t m_rtc;
rtc_regs_t m_hold;
devcb_resolved_write_line m_out_int_func;
};
// device type definition
extern const device_type msm6242;
#endif /* __MSM6242DEV_H__ */
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