--- nono/vm/opm.h	2026/04/29 17:05:17	1.1.1.6
+++ nono/vm/opm.h	2026/04/29 17:05:25	1.1.1.7
@@ -25,7 +25,7 @@ class OPMDevice : public IODevice
 
  public:
 	OPMDevice();
-	virtual ~OPMDevice() override;
+	~OPMDevice() override;
 
 	bool Init() override;
 	void ResetHard(bool poweron) override;
@@ -33,9 +33,9 @@ class OPMDevice : public IODevice
  protected:
 	// BusIO インタフェース
 	static const uint32 NPORT = 2;
-	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:
 	bool IsBusy() const;