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-rw-r--r--src/devices/machine/ds1215.h77
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diff --git a/src/devices/machine/ds1215.h b/src/devices/machine/ds1215.h
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+// license:BSD-3-Clause
+// copyright-holders:Patrick Mackinlay
+
+#ifndef MAME_MACHINE_DS1215_H
+#define MAME_MACHINE_DS1215_H
+
+#pragma once
+
+#include "dirtc.h"
+
+class ds1215_device_base
+ : public device_t
+ , public device_nvram_interface
+ , public device_rtc_interface
+{
+public:
+ auto ceo() { return m_ceo.bind(); }
+
+ bool ceo_r() { return !m_ceo_state; }
+
+protected:
+ ds1215_device_base(machine_config const &mconfig, device_type type, char const *tag, device_t *owner, u32 clock);
+
+ // device_t implementation
+ virtual void device_start() override ATTR_COLD;
+ virtual void device_reset() override ATTR_COLD;
+
+ // device_nvram_interface implementation
+ virtual bool nvram_read(util::read_stream &file) override;
+ virtual bool nvram_write(util::write_stream &file) override;
+ virtual void nvram_default() override;
+
+ // device_rtc_interface implementation
+ virtual bool rtc_feature_y2k() const override { return false; }
+ virtual bool rtc_feature_leap_year() const override { return true; }
+ virtual void rtc_clock_updated(int year, int month, int day, int day_of_week, int hour, int minute, int second) override;
+
+ u8 read_bit();
+ void write_bit(u8 data);
+
+private:
+ void timer(s32 param);
+ void update_ceo();
+
+ devcb_write_line m_ceo;
+ emu_timer *m_timer;
+
+ // internal state
+ u8 m_mode;
+ u8 m_count;
+ u8 m_reg[8];
+ bool m_ceo_state;
+};
+
+class ds1215_device : public ds1215_device_base
+{
+public:
+ ds1215_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock = 32'768);
+ ~ds1215_device() {}
+
+ u8 read();
+ void write(u8 data);
+};
+
+class ds1216e_device : public ds1215_device_base
+{
+public:
+ ds1216e_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock = 32'768);
+ ~ds1216e_device() {}
+
+ u8 read(offs_t offset);
+};
+
+DECLARE_DEVICE_TYPE(DS1215, ds1215_device)
+DECLARE_DEVICE_TYPE(DS1216E, ds1216e_device)
+
+#endif // MAME_MACHINE_DS1215_H