--- nono/vm/dmac.h	2026/04/29 17:04:44	1.1.1.6
+++ nono/vm/dmac.h	2026/04/29 17:04:55	1.1.1.8
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "device.h"
+#include "monitor.h"
 #include "scheduler.h"
 
 struct DMAC
@@ -167,8 +168,7 @@ struct DMAC
 	uint8 gcr;
 };
 
-class DMACDevice
-	: public IODevice
+class DMACDevice : public IODevice
 {
 	using inherited = IODevice;
 
@@ -179,7 +179,6 @@ class DMACDevice
 	virtual ~DMACDevice() override;
 
 	void ResetHard() override;
-	void MonitorUpdate(TextScreen&) override;
 
 	// 転送
 	void StartTransfer(DMAC::Channel *chan);
@@ -194,11 +193,12 @@ class DMACDevice
  protected:
 	// BusIO インタフェース
 	static const uint NPORT = 256;
-	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:
+	DECLARE_MONITOR_CALLBACK(MonitorUpdate);
 	void MonitorReg4(TextScreen&,
 		int x, int y, uint32 reg, const char * const *names);
 
@@ -208,6 +208,8 @@ class DMACDevice
 	struct DMAC dmac {};
 	Event event[4] {};
 
+	Monitor monitor { this };
+
 	static const char * const errnames[];
 };