--- nono/vm/scc.h	2026/04/29 17:05:17	1.1.1.10
+++ nono/vm/scc.h	2026/04/29 17:05:28	1.1.1.12
@@ -10,7 +10,6 @@
 
 #pragma once
 
-#include "device.h"
 #include "mpscc.h"
 
 class Keyboard;
@@ -21,28 +20,27 @@ class SCCDevice : public MPSCCDevice
 
  public:
 	SCCDevice();
-	virtual ~SCCDevice() override;
+	~SCCDevice() override;
 
 	bool Init() override;
 	void ResetHard(bool poweron) override;
 
 	// 割り込みアクノリッジ
-	int InterruptAcknowledge();
+	busdata InterruptAcknowledge();
 
  protected:
 	// BusIO インタフェース
-	static const uint32 NPORT = 4;
-	uint64 Read(uint32 offset);
-	uint64 Write(uint32 offset, uint32 data);
-	uint64 Peek(uint32 offset);
+	busdata ReadPort(uint32 offset);
+	busdata WritePort(uint32 offset, uint32 data);
+	busdata PeekPort(uint32 offset);
 
 	void Tx(int ch, uint32 data) override;
 	uint GetHighestInt() const override;
 
  private:
 	// 指定のレジスタ名を返す
-	const char *CRName(const MPSCCChan&, int n) const override;
-	const char *SRName(const MPSCCChan&, int n) const override;
+	const char *CRName(const MPSCCChan&, uint n) const override;
+	const char *SRName(const MPSCCChan&, uint n) const override;
 
 	// WR, RR のほうが通りがいいので結局用意する
 	const char *WRName(const MPSCCChan& chan, int n) const {