--- nono/host/hostcom.h	2026/04/29 17:05:47	1.1.1.6
+++ nono/host/hostcom.h	2026/04/29 17:06:02	1.1.1.8
@@ -46,7 +46,7 @@ class HostCOMDevice : public HostDevice
 	uint32 Rx();
 
 	// ドライバ名を返す。
-	const std::string GetDriverName();
+	const std::string& GetDriverName();
 
  private:
 	bool SelectDriver(bool startup) override;
@@ -58,7 +58,7 @@ class HostCOMDevice : public HostDevice
 	int Read() override;
 	void Write() override;
 
-	DECLARE_MONITOR_CALLBACK(MonitorUpdate);
+	DECLARE_MONITOR_SCREEN(MonitorScreen);
 
 	// キュー
 	COMQueue txq {};