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-rw-r--r--trunk/src/emu/machine/timekpr.h160
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diff --git a/trunk/src/emu/machine/timekpr.h b/trunk/src/emu/machine/timekpr.h
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+/***************************************************************************
+
+ timekpr.h
+
+ Various ST Microelectronics timekeeper SRAM implementations:
+ - M48T02
+ - M48T35
+ - M48T37
+ - M48T58
+ - MK48T08
+
+***************************************************************************/
+
+#pragma once
+
+#ifndef __TIMEKPR_H__
+#define __TIMEKPR_H__
+
+#include "emu.h"
+#include "devhelpr.h"
+
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_M48T02_ADD(_tag) \
+ MCFG_DEVICE_ADD(_tag, M48T02, 0)
+
+#define MCFG_M48T35_ADD(_tag) \
+ MCFG_DEVICE_ADD(_tag, M48T35, 0)
+
+#define MCFG_M48T37_ADD(_tag) \
+ MCFG_DEVICE_ADD(_tag, M48T37, 0)
+
+#define MCFG_M48T58_ADD(_tag) \
+ MCFG_DEVICE_ADD(_tag, M48T58, 0)
+
+#define MCFG_MK48T08_ADD(_tag) \
+ MCFG_DEVICE_ADD(_tag, MK48T08, 0)
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+
+// ======================> timekeeper_config
+
+struct timekeeper_config
+{
+ const UINT8 *m_data;
+};
+
+
+// ======================> timekeeper_device
+
+class timekeeper_device : public device_t,
+ public device_nvram_interface
+{
+protected:
+ // construction/destruction
+ timekeeper_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock);
+
+public:
+ void write(UINT16 offset, UINT8 data);
+ UINT8 read(UINT16 offset);
+
+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_nvram_interface overrides
+ virtual void nvram_default();
+ virtual void nvram_read(emu_file &file);
+ virtual void nvram_write(emu_file &file);
+
+private:
+ void counters_to_ram();
+ void counters_from_ram();
+
+ // internal state
+ UINT8 m_control;
+ UINT8 m_seconds;
+ UINT8 m_minutes;
+ UINT8 m_hours;
+ UINT8 m_day;
+ UINT8 m_date;
+ UINT8 m_month;
+ UINT8 m_year;
+ UINT8 m_century;
+
+ UINT8 *m_data;
+ UINT8 *m_default_data;
+
+protected:
+ int m_size;
+ int m_offset_control;
+ int m_offset_seconds;
+ int m_offset_minutes;
+ int m_offset_hours;
+ int m_offset_day;
+ int m_offset_date;
+ int m_offset_month;
+ int m_offset_year;
+ int m_offset_century;
+ int m_offset_flags;
+};
+
+class m48t02_device : public timekeeper_device
+{
+public:
+ m48t02_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+};
+
+class m48t35_device : public timekeeper_device
+{
+public:
+ m48t35_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+};
+
+class m48t37_device : public timekeeper_device
+{
+public:
+ m48t37_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+};
+
+class m48t58_device : public timekeeper_device
+{
+public:
+ m48t58_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+};
+
+class mk48t08_device : public timekeeper_device
+{
+public:
+ mk48t08_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+};
+
+// device type definition
+extern const device_type M48T02;
+extern const device_type M48T35;
+extern const device_type M48T37;
+extern const device_type M48T58;
+extern const device_type MK48T08;
+
+
+
+//**************************************************************************
+// READ/WRITE HANDLERS
+//**************************************************************************
+
+WRITE8_DEVICE_HANDLER( timekeeper_w );
+READ8_DEVICE_HANDLER( timekeeper_r );
+
+#endif // __TIMEKPR_H__