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/**********************************************************************
OKI MSM58321RS Real Time Clock/Calendar emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************
_____ _____
CS2 1 |* \_/ | 16 Vdd
WRITE 2 | | 15 XT
READ 3 | | 14 _XT
D0 4 | MSM58321 | 13 CS1
D1 5 | RTC58321 | 12 TEST
D2 6 | | 11 STOP
D3 7 | | 10 _BUSY
GND 8 |_____________| 9 ADDRESS WRITE
**********************************************************************/
#pragma once
#ifndef __MSM58321__
#define __MSM58321__
#include "emu.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_MSM58321_ADD(_tag, _clock, _config) \
MCFG_DEVICE_ADD(_tag, MSM58321, _clock) \
MCFG_DEVICE_CONFIG(_config)
#define MSM58321_INTERFACE(name) \
const msm58321_interface (name) =
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> msm58321_interface
struct msm58321_interface
{
devcb_write_line m_out_busy_cb;
};
// ======================> msm58321_device
class msm58321_device : public device_t,
public device_rtc_interface,
public msm58321_interface
{
public:
// construction/destruction
msm58321_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
DECLARE_READ8_MEMBER( read );
DECLARE_WRITE8_MEMBER( write );
DECLARE_WRITE_LINE_MEMBER( cs1_w );
DECLARE_WRITE_LINE_MEMBER( cs2_w );
DECLARE_WRITE_LINE_MEMBER( read_w );
DECLARE_WRITE_LINE_MEMBER( write_w );
DECLARE_WRITE_LINE_MEMBER( address_write_w );
DECLARE_WRITE_LINE_MEMBER( stop_w );
DECLARE_WRITE_LINE_MEMBER( test_w );
DECLARE_READ_LINE_MEMBER( busy_r );
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_start();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
// device_rtc_interface overrides
virtual void rtc_set_time(int year, int month, int day, int day_of_week, int hour, int minute, int second);
virtual bool rtc_is_year_2000_compliant() { return false; }
private:
static const device_timer_id TIMER_CLOCK = 0;
static const device_timer_id TIMER_BUSY = 1;
inline int read_counter(int counter);
inline void write_counter(int counter, int value);
inline void advance_seconds();
inline void advance_minutes();
devcb_resolved_write_line m_out_busy_func;
int m_cs1; // chip select 1
int m_cs2; // chip select 2
int m_busy; // busy flag
int m_read; // read data
int m_write; // write data
int m_address_write; // write address
UINT8 m_reg[13]; // registers
UINT8 m_latch; // data latch (not present in real chip)
UINT8 m_address; // address latch
// timers
emu_timer *m_clock_timer;
emu_timer *m_busy_timer;
};
// device type definition
extern const device_type MSM58321;
#endif
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