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+/**********************************************************************
+
+ OKI MSM5832 Real Time Clock/Calendar emulation
+
+ Copyright MESS Team.
+ Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************
+ _____ _____
+ Vdd 1 |* \_/ | 18 HOLD
+ WRITE 2 | | 17 _XT
+ READ 3 | | 16 XT
+ A0 4 | | 15 +- 30 ADJ
+ A1 5 | MSM5832 | 14 TEST
+ A2 6 | | 13 GND
+ A3 7 | | 12 D3
+ CS 8 | | 11 D2
+ D0 9 |_____________| 10 D1
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __MSM5832__
+#define __MSM5832__
+
+#include "emu.h"
+
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_MSM5832_ADD(_tag, _clock) \
+ MCFG_DEVICE_ADD(_tag, MSM5832, _clock)
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> msm5832_device
+
+class msm5832_device : public device_t,
+ public device_rtc_interface
+{
+public:
+ // construction/destruction
+ msm5832_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ DECLARE_READ8_MEMBER( data_r );
+ DECLARE_WRITE8_MEMBER( data_w );
+
+ void address_w(UINT8 data);
+
+ DECLARE_WRITE_LINE_MEMBER( adj_w );
+ DECLARE_WRITE_LINE_MEMBER( test_w );
+ DECLARE_WRITE_LINE_MEMBER( hold_w );
+
+ DECLARE_WRITE_LINE_MEMBER( read_w );
+ DECLARE_WRITE_LINE_MEMBER( write_w );
+ DECLARE_WRITE_LINE_MEMBER( cs_w );
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+ virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
+
+ // 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);
+
+private:
+ static const device_timer_id TIMER_CLOCK = 0;
+
+ inline int read_counter(int counter);
+ inline void write_counter(int counter, int value);
+
+ UINT8 m_reg[13]; // registers
+
+ int m_hold; // counter hold
+ int m_address; // address
+
+ int m_read;
+ int m_write;
+ int m_cs;
+
+ // timers
+ emu_timer *m_clock_timer;
+};
+
+
+// device type definition
+extern const device_type MSM5832;
+
+
+
+#endif