--- nono/vm/fuserom.h	2026/04/29 17:04:44	1.1.1.4
+++ nono/vm/fuserom.h	2026/04/29 17:05:29	1.1.1.9
@@ -4,9 +4,14 @@
 // Licensed under nono-license.txt
 //
 
+//
+// FuseROM
+//
+
 #pragma once
 
 #include "device.h"
+#include <array>
 
 class FuseROMDevice : public IODevice
 {
@@ -16,18 +21,25 @@ class FuseROMDevice : public IODevice
 	static const uint32 SRCBYTES = 128;
  public:
 	FuseROMDevice();
-	virtual ~FuseROMDevice() override;
+	~FuseROMDevice() override;
 
 	bool Init() override;
 
  protected:
 	// BusIO インタフェース
 	static const uint32 NPORT = SRCBYTES * 2;	// XXX 未調査
-	uint64 Read(uint32 addr);
-	uint64 Write(uint32 addr, uint32 data);
-	uint64 Peek(uint32 addr);
+	busdata ReadPort(uint32 offset);
+	busdata WritePort(uint32 offset, uint32 data);
+	busdata PeekPort(uint32 offset);
+	bool PokePort(uint32 offset, uint32 data);
 
  private:
+	uint8 GetByte(uint32 offset) const;
+
 	// バイトデータで保持しておく
-	uint8 src[SRCBYTES] {};
+	std::array<uint8, SRCBYTES> src {};
 };
+
+static inline FuseROMDevice *GetFuseROMDevice() {
+	return Object::GetObject<FuseROMDevice>(OBJ_FUSEROM);
+}