--- nono/vm/mk48t02.h	2026/04/29 17:04:42	1.1.1.5
+++ nono/vm/mk48t02.h	2026/04/29 17:04:50	1.1.1.7
@@ -54,7 +54,7 @@ class MK48T02Device : public RTCDevice
 	using inherited = RTCDevice;
  public:
 	MK48T02Device();
-	~MK48T02Device() override;
+	virtual ~MK48T02Device() override;
 
 	bool Init() override;
 	bool InitRTC() override;
@@ -70,9 +70,10 @@ class MK48T02Device : public RTCDevice
 
 	// BusIO インタフェース
 	// (内蔵 ROM からのアクセス用に特別に public にしてある)
-	uint64 Read(uint32 addr);
-	uint64 Write(uint32 addr, uint32 data);
-	uint64 Peek(uint32 addr);
+	uint64 Read(uint32 offset);
+	uint64 Write(uint32 offset, uint32 data);
+	uint64 Peek(uint32 offset);
+
  protected:
 	// BusIO インタフェース
 	static const uint32 NPORT = 2048;