--- nono/vm/sysport.h	2026/04/29 17:04:42	1.1.1.4
+++ nono/vm/sysport.h	2026/04/29 17:04:50	1.1.1.6
@@ -33,17 +33,19 @@ class SysportDevice
 
  public:
 	SysportDevice();
-	~SysportDevice() override;
+	virtual ~SysportDevice() override;
 
 	void ResetHard() override;
 
  protected:
 	// BusIO インタフェース
 	static const uint32 NPORT = 8;
-	uint64 Read(uint32 addr);
-	uint64 Write(uint32 addr, uint32 data);
-	uint64 Peek(uint32 addr);
+	uint64 Read(uint32 offset);
+	uint64 Write(uint32 offset, uint32 data);
+	uint64 Peek(uint32 offset);
 
  private:
 	struct SYSPORT sysport {};
 };
+
+extern std::unique_ptr<SysportDevice> gSysport;