--- nono/vm/ram.h	2026/04/29 17:04:28	1.1.1.1
+++ nono/vm/ram.h	2026/04/29 17:05:09	1.1.1.9
@@ -1,31 +1,61 @@
 //
 // nono
-// Copyright (C) 2018 isaki@NetBSD.org
+// Copyright (C) 2020 nono project
+// Licensed under nono-license.txt
+//
+
+//
+// メインメモリ
 //
 
 #pragma once
 
 #include "device.h"
 
-class RAMDevice
-	: public IODevice
+class RAMDevice : public IODevice
 {
-	typedef IODevice inherited;
+	using inherited = IODevice;
  public:
 	RAMDevice();
-	virtual ~RAMDevice();
+	virtual ~RAMDevice() override;
+
+	bool Init() override;
+	void ResetHard(bool poweron) override;
+
+	uint64 Read8(uint32 addr) override;
+	uint64 Read16(uint32 addr) override;
+	uint64 Read32(uint32 addr) override;
+	uint64 Write8(uint32 addr, uint32 data) override;
+	uint64 Write16(uint32 addr, uint32 data) override;
+	uint64 Write32(uint32 addr, uint32 data) override;
+	uint64 Peek8(uint32 addr) override;
+
+	// RAM 容量(バイト単位)を取得
+	int GetSize() const	{ return ram_size; }
+	// RAM 容量(MB単位)を取得
+	int GetSizeMB() const { return (uint)ram_size / 1024 / 1024; }
+
+	// アクセスウェイトを設定
+	void SetWait(uint32 wait);
+
+	// ホストの filepath をロードする
+	uint32 LoadFile(const char *filepath);
+	// file, filesize で示されるバッファをロードする
+	uint32 LoadFile(const char *name, const uint8 *file, size_t filesize);
+
+ private:
+	uint32 LoadGzFile(const char *filepath, const uint8 *file, size_t filesize);
+	uint32 Load_aout(const char *name, const uint8 *file, size_t filesize);
+	uint32 Load_elf32(const char *name, const uint8 *file, size_t filesize);
+	bool Load_elf32_exec(const char *name, const uint8 *file, size_t filesize);
+	uint32 Load_elf32_rel(const char *name, const uint8 *file, size_t filesize);
 
-	virtual bool Init();
+	// RAM 容量(バイト単位)。ram[] の確保したバイト数
+	int ram_size {};
 
-	virtual uint64 Read8(uint32 addr);
-	virtual uint64 Read16(uint32 addr);
-	virtual uint64 Read32(uint32 addr);
-	virtual uint64 Write8(uint32 addr, uint32 data);
-	virtual uint64 Write16(uint32 addr, uint32 data);
-	virtual uint64 Write32(uint32 addr, uint32 data);
-	virtual uint64 Peek8(uint32 addr);
+	uint32 read_wait {};
+	uint32 write_wait {};
 };
 
-extern uint8 *ram;
-extern int ram_size;
+extern std::unique_ptr<uint8[]> mainram;
 extern RAMDevice *gRAM;