--- nono/vm/iocon.h	2026/04/29 17:04:28	1.1
+++ nono/vm/iocon.h	2026/04/29 17:04:32	1.1.1.2
@@ -27,6 +27,9 @@ class IOConDevice
 	void IntFDC();
 
  private:
+	// アドレスデコーダ
+	uint64 Decoder(uint32 addr) const;
+
 	bool hdd_int = false;
 	bool fdc_int = false;
 	bool fdd_int = false;
@@ -38,4 +41,4 @@ class IOConDevice
 	uint8 vector = 0;
 };
 
-extern IOConDevice *gIOCon;
+extern std::unique_ptr<IOConDevice> gIOCon;