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-rw-r--r--trunk/src/emu/machine/rtc9701.h110
1 files changed, 110 insertions, 0 deletions
diff --git a/trunk/src/emu/machine/rtc9701.h b/trunk/src/emu/machine/rtc9701.h
new file mode 100644
index 00000000000..9c5b96be74c
--- /dev/null
+++ b/trunk/src/emu/machine/rtc9701.h
@@ -0,0 +1,110 @@
+/***************************************************************************
+
+ rtc9701.h
+
+ Serial rtc9701s.
+
+***************************************************************************/
+
+#pragma once
+
+#ifndef __rtc9701DEV_H__
+#define __rtc9701DEV_H__
+
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_RTC9701_ADD(_tag) \
+ MCFG_DEVICE_ADD(_tag, rtc9701, XTAL_32_768kHz) \
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+
+typedef enum
+{
+ RTC9701_CMD_WAIT = 0,
+ RTC9701_RTC_READ,
+ RTC9701_RTC_WRITE,
+ RTC9701_EEPROM_READ,
+ RTC9701_EEPROM_WRITE,
+ RTC9701_AFTER_WRITE_ENABLE,
+
+} rtc9701_state_t;
+
+typedef struct
+{
+ UINT8 sec, min, hour, day, wday, month, year;
+} rtc_regs_t;
+
+
+// ======================> rtc9701_device
+
+class rtc9701_device : public device_t,
+ public device_nvram_interface
+{
+public:
+ // construction/destruction
+ rtc9701_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+
+ // I/O operations
+ DECLARE_WRITE_LINE_MEMBER( write_bit );
+ DECLARE_READ_LINE_MEMBER( read_bit );
+ DECLARE_WRITE_LINE_MEMBER( set_cs_line );
+ DECLARE_WRITE_LINE_MEMBER( set_clock_line );
+ void timer_callback();
+
+protected:
+ // device-level overrides
+ virtual void device_validity_check(validity_checker &valid) const;
+ virtual void device_start();
+ virtual void device_reset();
+
+ // device_nvram_interface overrides
+ virtual void nvram_default();
+ virtual void nvram_read(emu_file &file);
+ virtual void nvram_write(emu_file &file);
+ inline UINT8 rtc_read(UINT8 offset);
+ inline void rtc_write(UINT8 offset,UINT8 data);
+
+ static TIMER_CALLBACK( rtc_inc_callback );
+
+ int m_latch;
+ int m_reset_line;
+ int m_clock_line;
+
+
+ rtc9701_state_t rtc_state;
+ int cmd_stream_pos;
+ int current_cmd;
+
+ int rtc9701_address_pos;
+ int rtc9701_current_address;
+
+ UINT16 rtc9701_current_data;
+ int rtc9701_data_pos;
+
+ UINT16 rtc9701_data[0x100];
+
+ rtc_regs_t m_rtc;
+};
+
+
+// device type definition
+extern const device_type rtc9701;
+
+
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+
+
+#endif