--- nono/vm/dmac.h	2026/04/29 17:05:51	1.1.1.17
+++ nono/vm/dmac.h	2026/04/29 17:05:55	1.1.1.18
@@ -105,9 +105,10 @@ struct DMAC
 	static const uint32 SIZE_16BIT = 1;			// 16bit
 	static const uint32 SIZE_32BIT = 2;			// 32bit
 	static const uint32 SIZE_8BIT_UNPK = 3;		// 8bit UnPacked
-	static const uint32 CHAIN_NOCHAIN = 0;		// Chain operation is disabled
+	static const uint32 CHAIN_DISABLED = 0;		// Chain operation is disabled
+	static const uint32 CHAIN_reserved = 1;		// (Undefined, reserved)
 	static const uint32 CHAIN_ARRAY = 2;		// Array Chaining
-	static const uint32 CHAIN_LINK = 3;			// Linked Array Chaining
+	static const uint32 CHAIN_LINKARRAY = 3;	// Linked Array Chaining
 	static const uint32 REQG_AUTO_LIM = 0;		// Auto Request (Limited)
 	static const uint32 REQG_AUTO_MAX = 1;		// AUto Request (Max)
 	static const uint32 REQG_EXTERNAL = 2;		// External Request
@@ -145,9 +146,13 @@ struct DMAC
 };
 
 // 各チャンネル
-class DMACChan
+class DMACChan : public Device
 {
+	using inherited = Device;
  public:
+	DMACChan(int ch_, const char *desc_);
+	~DMACChan() override;
+
 	// 二次変数など
 	int ch;				// チャンネル番号
 	const char *desc;	// チャンネルの用途(モニタ表示用)
@@ -310,6 +315,8 @@ class DMACDevice : public IODevice
 	// 転送
 	void StartTransfer(DMACChan *chan);
 	void AbortTransfer(DMACChan *chan);
+	std::string MakeStartLog(DMACChan *chan);
+	bool LoadLinkArray(DMACChan *chan);
 	DMACChan *SelectChannel();
 
 	// 転送イベントコールバック
@@ -328,8 +335,13 @@ class DMACDevice : public IODevice
 	void AssertACK(DMACChan *);
 	void NegateACK(DMACChan *);
 
+	// メインメモリアクセス
+	busdata ReadMem(busaddr addr);
+	busdata ReadMem4(busaddr addr);
+	busdata WriteMem(busaddr addr, uint32 data);
+
 	// レジスタ
-	std::array<DMACChan, 4> channel {};
+	std::array<std::unique_ptr<DMACChan>, 4> channels {};
 	uint8 gcr;
 
 	// ユーザ空間制御