--- nono/vm/rp5c15.h	2026/04/29 17:04:45	1.1.1.6
+++ nono/vm/rp5c15.h	2026/04/29 17:04:55	1.1.1.9
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "device.h"
+#include "monitor.h"
 #include "rtc.h"
 
 struct RP5C15
@@ -108,9 +109,7 @@ class RP5C15Device : public RTCDevice
 	RP5C15Device();
 	virtual ~RP5C15Device() override;
 
-	bool InitRTC() override;
-
-	void MonitorUpdate(TextScreen&) override;
+	bool Init() override;
 
 	// 32Hz クロック入力
 	void ClockIn() override;
@@ -118,14 +117,16 @@ class RP5C15Device : public RTCDevice
  protected:
 	// BusIO インタフェース
 	static const uint32 NPORT = 16;
-	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:
 	// レジスタを更新
 	void UpdateReg(uint32);
 
+	DECLARE_MONITOR_CALLBACK(MonitorUpdate);
+
 	// レジスタ
 	RP5C15 reg {};
 
@@ -137,4 +138,6 @@ class RP5C15Device : public RTCDevice
 	bool clkout {};
 	// ALARM 端子の状態 (true なら 'H')
 	bool alarmout {};
+
+	Monitor monitor { this };
 };