--- nono/vm/fdc.h	2026/04/29 17:04:35	1.1.1.2
+++ nono/vm/fdc.h	2026/04/29 17:04:44	1.1.1.4
@@ -109,7 +109,7 @@ class FDCDevice
 
  public:
 	FDCDevice();
-	~FDCDevice() override;
+	virtual ~FDCDevice() override;
 
 	void ResetHard() override;
 
@@ -133,7 +133,7 @@ class FDCDevice
 	struct FDC fdc {};
 	struct FDD fdd[4] {};
 
-	void Callback(int);
+	void Callback(Event& ev);
 
 	void Interrupt();
 
@@ -145,3 +145,5 @@ class FDCDevice
 	// コマンド名一覧
 	static const char *cmdnames_str[];
 };
+
+extern std::unique_ptr<FDCDevice> gFDC;