--- nono/vm/adpcm.h	2026/04/29 17:05:18	1.1.1.2
+++ nono/vm/adpcm.h	2026/04/29 17:05:25	1.1.1.3
@@ -30,7 +30,7 @@ class ADPCMDevice : public IODevice
 
  public:
 	ADPCMDevice();
-	virtual ~ADPCMDevice() override;
+	~ADPCMDevice() override;
 
 	bool Init() override;
 	void ResetHard(bool poweron) override;
@@ -45,9 +45,9 @@ class ADPCMDevice : 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:
 	void StartPlay();