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-rw-r--r--src/mame/msx/msx_s1985.h44
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diff --git a/src/mame/msx/msx_s1985.h b/src/mame/msx/msx_s1985.h
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+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol
+#ifndef MAME_MSX_MSX_S1985_H
+#define MAME_MSX_MSX_S1985_H
+
+#pragma once
+
+#include "msx_switched.h"
+
+
+DECLARE_DEVICE_TYPE(MSX_S1985, msx_s1985_device)
+
+
+class msx_s1985_device : public device_t,
+ public msx_switched_interface,
+ public device_nvram_interface
+{
+public:
+ msx_s1985_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+ // msx_switched_interface overrides
+ virtual u8 switched_read(offs_t offset) override;
+ virtual void switched_write(offs_t offset, u8 data) override;
+
+protected:
+ // device-level overrides
+ virtual void device_start() override ATTR_COLD;
+
+ // device_nvram_interface overrides
+ virtual void nvram_default() override;
+ virtual bool nvram_read(util::read_stream &file) override;
+ virtual bool nvram_write(util::write_stream &file) override;
+
+private:
+ static constexpr u8 MANUFACTURER_ID = 0xfe;
+ bool m_selected;
+ u8 m_backup_ram_address;
+ u8 m_backup_ram[0x10];
+ u8 m_color1;
+ u8 m_color2;
+ u8 m_pattern;
+};
+
+#endif // MAME_MSX_MSX_S1985_H