--- nono/vm/x68kio.h	2026/04/29 17:05:18	1.1.1.1
+++ nono/vm/x68kio.h	2026/04/29 17:05:21	1.1.1.2
@@ -11,6 +11,7 @@
 #pragma once
 
 #include "device.h"
+#include "monitor.h"
 #include <array>
 
 class X68kIODevice : public IOContainerDevice
@@ -33,13 +34,16 @@ class X68kIODevice : public IOContainerD
 	// ブートページを切り替える。
 	void SwitchBootPage(bool isrom);
 
+	// デバイスをセット (Nereid からも呼ばれる)
+	void AddDevice(IODevice *dev, uint devaddr, uint devlen);
+
  protected:
 	IODevice *GetDevice(uint32 addr) const override;
 
  private:
 	IODevice *SearchDevice(uint32 addr) const;
 
-	void AddDevice(IODevice *dev, uint devaddr, uint devlen);
+	DECLARE_MONITOR_CALLBACK(MonitorUpdate);
 
 	std::unique_ptr<IODevice> pADPCM {};
 	std::unique_ptr<IODevice> pAreaSet {};
@@ -52,6 +56,7 @@ class X68kIODevice : public IOContainerD
 	std::unique_ptr<IODevice> pIPLROM1 {};
 	std::unique_ptr<IODevice> pIPLROM2 {};
 	std::unique_ptr<IODevice> pMFP {};
+	std::unique_ptr<IODevice> pNereid {};
 	std::unique_ptr<IODevice> pOPM {};
 	std::unique_ptr<IODevice> pPlaneVRAM {};
 	std::unique_ptr<IODevice> pPluto {};
@@ -66,4 +71,10 @@ class X68kIODevice : public IOContainerD
 	std::unique_ptr<IODevice> pVideoCtlr {};
 
 	std::array<IODevice*, 2048> table {};
+
+	Monitor monitor { this };
 };
+
+static inline X68kIODevice *GetX68kIODevice() {
+	return Object::GetObject<X68kIODevice>(OBJ_X68KIO);
+}