--- nono/vm/fuserom.h	2026/04/29 17:05:17	1.1.1.7
+++ nono/vm/fuserom.h	2026/04/29 17:05:25	1.1.1.8
@@ -20,16 +20,16 @@ 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 offset);
-	uint64 Write(uint32 offset, uint32 data);
-	uint64 Peek(uint32 offset);
+	busdata Read(uint32 offset);
+	busdata Write(uint32 offset, uint32 data);
+	busdata Peek(uint32 offset);
 
  private:
 	// バイトデータで保持しておく