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+/***************************************************************************
+
+ dinvram.h
+
+ Device NVRAM interfaces.
+
+****************************************************************************
+
+ Copyright Aaron Giles
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name 'MAME' nor the names of its contributors may be
+ used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
+ IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
+ INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+
+***************************************************************************/
+
+#pragma once
+
+#ifndef __EMU_H__
+#error Dont include this file directly; include emu.h instead.
+#endif
+
+#ifndef __DINVRAM_H__
+#define __DINVRAM_H__
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+
+// ======================> device_config_nvram_interface
+
+// class representing interface-specific configuration nvram
+class device_config_nvram_interface : public device_config_interface
+{
+public:
+ // construction/destruction
+ device_config_nvram_interface(const machine_config &mconfig, device_config &device);
+ virtual ~device_config_nvram_interface();
+};
+
+
+
+// ======================> device_nvram_interface
+
+// class representing interface-specific live nvram
+class device_nvram_interface : public device_interface
+{
+public:
+ // construction/destruction
+ device_nvram_interface(running_machine &machine, const device_config &config, device_t &device);
+ virtual ~device_nvram_interface();
+
+ // configuration access
+ const device_config_nvram_interface &nvram_config() const { return m_nvram_config; }
+
+ // public accessors... for now
+ void nvram_reset() { nvram_default(); }
+ void nvram_load(mame_file &file) { nvram_read(file); }
+ void nvram_save(mame_file &file) { nvram_write(file); }
+
+protected:
+ // derived class overrides
+ virtual void nvram_default() = 0;
+ virtual void nvram_read(mame_file &file) = 0;
+ virtual void nvram_write(mame_file &file) = 0;
+
+ // configuration
+ const device_config_nvram_interface &m_nvram_config; // reference to our device_config_execute_interface
+};
+
+
+#endif /* __DINVRAM_H__ */