--- nono/vm/nereid.h	2026/04/29 17:05:21	1.1.1.1
+++ nono/vm/nereid.h	2026/04/29 17:05:25	1.1.1.2
@@ -29,15 +29,18 @@ class NereidDevice : public IODevice
 
 	bool Create() override;
 
-	uint64 Read8(uint32 addr) override;
-	uint64 Read16(uint32 addr) override;
-	uint64 Write8(uint32 addr, uint32 data) override;
-	uint64 Write16(uint32 addr, uint32 data) override;
-	uint64 Peek8(uint32 addr) override;
+	busdata Read8(uint32 addr) override;
+	busdata Read16(uint32 addr) override;
+	busdata Write8(uint32 addr, uint32 data) override;
+	busdata Write16(uint32 addr, uint32 data) override;
+	busdata Peek8(uint32 addr) override;
 
 	// Nereid が1枚でもささっていれば true。
 	bool IsInstalled() const;
 
+	// Board デバイス取得。
+	NereidBoardDevice *GetBoard(int id) const { return boards[id].get(); }
+
  private:
 	inline uint32 Decoder(uint32 addr) const;
 	DECLARE_MONITOR_CALLBACK(MonitorUpdate);
@@ -61,11 +64,11 @@ class NereidBoardDevice : public IODevic
 
 	bool Create() override;
 
-	uint64 Read8(uint32 addr) override;
-	uint64 Read16(uint32 addr) override;
-	uint64 Write8(uint32 addr, uint32 data) override;
-	uint64 Write16(uint32 addr, uint32 data) override;
-	uint64 Peek8(uint32 addr) override;
+	busdata Read8(uint32 addr) override;
+	busdata Read16(uint32 addr) override;
+	busdata Write8(uint32 addr, uint32 data) override;
+	busdata Write16(uint32 addr, uint32 data) override;
+	busdata Peek8(uint32 addr) override;
 
 	// ネットワークが有効なら true を返す
 	bool IsNetEnable() const { return (bool)net; }