--- nono/vm/mfp.h	2026/04/29 17:04:52	1.1.1.8
+++ nono/vm/mfp.h	2026/04/29 17:04:55	1.1.1.9
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "device.h"
+#include "monitor.h"
 #include "scheduler.h"
 
 struct MFP
@@ -175,8 +176,7 @@ struct MFP
 	uint16 udr;
 };
 
-class MFPDevice
-	: public IODevice
+class MFPDevice : public IODevice
 {
 	using inherited = IODevice;
 
@@ -187,7 +187,6 @@ class MFPDevice
 	virtual ~MFPDevice() override;
 
 	void ResetHard() override;
-	void MonitorUpdate(TextScreen&) override;
 
 	// 割り込みアクノリッジ
 	int InterruptAcknowledge();
@@ -239,9 +238,13 @@ class MFPDevice
 	// 割り込み信号線の状態を変える
 	void ChangeInterrupt();
 
+	DECLARE_MONITOR_CALLBACK(MonitorUpdate);
+
 	struct MFP mfp {};
 	Event event[4] {};
-	Event key_event {};
+	Event key_event { this };
+
+	Monitor monitor { this };
 
 	static const char *intrname[];
 	static const char *gpipname[];