--- nono/vm/dmac.h	2026/04/29 17:05:33	1.1.1.15
+++ nono/vm/dmac.h	2026/04/29 17:05:51	1.1.1.17
@@ -12,7 +12,6 @@
 
 #include "device.h"
 #include "bus.h"
-#include "event.h"
 #include "fixedqueue.h"
 #include <array>
 
@@ -20,6 +19,7 @@ class ADPCMDevice;
 class FDCDevice;
 class InterruptDevice;
 class MainbusDevice;
+class Syncer;
 
 struct DMAC
 {
@@ -301,6 +301,9 @@ class DMACDevice : public IODevice
 	void WriteCCR(DMACChan *chan, uint32 data, uint8 up);
 	void WriteGCR(uint8 data);
 
+	// ACT ビットの状態を変更
+	void ChangeACT(DMACChan *, bool);
+
 	// 割り込み信号線の状態を変更
 	void ChangeInterrupt();
 
@@ -310,8 +313,8 @@ class DMACDevice : public IODevice
 	DMACChan *SelectChannel();
 
 	// 転送イベントコールバック
-	void StartCallback(Event& ev);
-	void TransferCallback(Event& ev);
+	void StartCallback(Event *);
+	void TransferCallback(Event *);
 
 	// ログ出力
 	void TransferLog(DMACChan *, uint op, busaddr addr, busdata r, uint64 data);
@@ -336,8 +339,9 @@ class DMACDevice : public IODevice
 	FDCDevice *fdc {};
 	InterruptDevice *interrupt {};
 	MainbusDevice *mainbus {};
+	Syncer *syncer {};
 
-	Event event { this };
+	Event *event {};
 
 	Monitor *monitor {};