--- nono/vm/tas.h	2026/04/29 17:05:18	1.1.1.7
+++ nono/vm/tas.h	2026/04/29 17:05:25	1.1.1.8
@@ -18,16 +18,16 @@ class TASDevice : public IODevice
 	using inherited = IODevice;
  public:
 	TASDevice();
-	virtual ~TASDevice() override;
+	~TASDevice() override;
 
 	void ResetHard(bool poweron) override;
 
  protected:
 	// BusIO インタフェース
 	static const uint32 NPORT = 1;
-	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:
 	std::atomic<uint8> tas {};	// bit 7 のみ有効。