--- nono/vm/upd7201.h	2026/04/29 17:04:36	1.1.1.3
+++ nono/vm/upd7201.h	2026/04/29 17:04:39	1.1.1.4
@@ -219,7 +219,7 @@ class uPD7201Device
 	uPD7201Device();
 	~uPD7201Device() override;
 
-	bool MonitorUpdate() override;
+	void MonitorUpdate(TextScreen&) override;
 
 	// 受信
 	bool Rx(int ch, uint32 data);
@@ -247,6 +247,7 @@ class uPD7201Device
 	uint8 ReadSR0(const struct SIO::channel *chan) const;
 	uint8 ReadSR1(const struct SIO::channel *chan) const;
 
-	void MonitorUpdateCh(int ch, int xbase, int ybase);
-	void MonitorReg(int, int, uint32 reg, const char * const *names);
+	void MonitorUpdateCh(TextScreen&, int ch, int xbase, int ybase);
+	void MonitorReg(TextScreen&,
+		int, int, uint32 reg, const char * const *names);
 };