--- nono/vm/bankram.h	2026/04/29 17:05:20	1.1
+++ nono/vm/bankram.h	2026/04/29 17:05:24	1.1.1.2
@@ -11,25 +11,26 @@
 #pragma once
 
 #include "device.h"
+#include <array>
 
 class BankRAMDevice : public IODevice
 {
 	using inherited = IODevice;
  public:
 	BankRAMDevice(int objid_, int ram_size_MB);
-	virtual ~BankRAMDevice() override;
+	~BankRAMDevice() override;
 
 	bool Init() override;
 	void ResetHard(bool poweron) override;
 
-	uint64 Read8(uint32 addr) override;
-	uint64 Read16(uint32 addr) override;
-	uint64 Read32(uint32 addr) override;
-	uint64 Write8(uint32 addr, uint32 data) override;
-	uint64 Write16(uint32 addr, uint32 data) override;
-	uint64 Write32(uint32 addr, uint32 data) override;
-	uint64 Peek8(uint32 addr) override;
-	uint64 Poke8(uint32 addr, uint32 data) override;
+	busdata Read8(uint32 addr) override;
+	busdata Read16(uint32 addr) override;
+	busdata Read32(uint32 addr) override;
+	busdata Write8(uint32 addr, uint32 data) override;
+	busdata Write16(uint32 addr, uint32 data) override;
+	busdata Write32(uint32 addr, uint32 data) override;
+	busdata Peek8(uint32 addr) override;
+	bool Poke8(uint32 addr, uint32 data) override;
 
 	// バンクページ取得・設定
 	uint32 GetPage() const { return page; }
@@ -38,6 +39,9 @@ class BankRAMDevice : public IODevice
 	// バンクメモリ容量 [MB]を取得 (負数は扱わない)
 	uint GetSize() const { return ram_size / 1024 / 1024; }
 
+	// アクセス状況の取得とクリア
+	void FetchAccStat(uint8 *buf);
+
  private:
 	// アドレスデコーダ
 	inline uint32 Decoder(uint32 addr) const;
@@ -50,4 +54,11 @@ class BankRAMDevice : public IODevice
 
 	// ページ番号をリニアアドレスにした状態で保持。
 	uint32 pageaddr {};
+
+	// アクセス状況
+	std::array<uint8, 16> accstat_read {};
+	std::array<uint8, 16> accstat_write {};
 };
+
+// GetBankRAMDevice() は用意していない。
+// BankRAMDevice は存在しない場合があるので FindObject() を使うこと。