--- nono/debugger/branchhistory.h	2026/04/29 17:05:16	1.1.1.4
+++ nono/debugger/branchhistory.h	2026/04/29 17:05:28	1.1.1.7
@@ -43,8 +43,8 @@ class BranchHistory : public Object
 	static const uint64 BottomToTop	= (1ULL << 63);	// 新しい方を下に
 
  public:
-	BranchHistory(int objid_);
-	virtual ~BranchHistory() override;
+	explicit BranchHistory(uint objid_);
+	~BranchHistory() override;
 
 	// 初期化
 	void Clear();
@@ -103,8 +103,14 @@ class BranchHistory_m680x0 : public Bran
 {
 	using inherited = BranchHistory;
  public:
-	BranchHistory_m680x0(int objid_);
-	virtual ~BranchHistory_m680x0() override;
+	// inst の分岐種別
+	static const uint32 Normal		= 0x00000000;	// 通常分岐
+	static const uint32 VectorJump	= 0x40000000;	// ベクタによる分岐
+	static const uint32 IOCSCall	= 0x80000000;	// IOCS コール
+	static const uint32 Exception	= 0xc0000000;	// 例外発生
+ public:
+	explicit BranchHistory_m680x0(uint objid_);
+	~BranchHistory_m680x0() override;
 
 	std::string FormatEntry(const BranchEntry& e) override;
 };
@@ -117,8 +123,8 @@ class BranchHistory_m88xx0 : public Bran
 {
 	using inherited = BranchHistory;
  public:
-	BranchHistory_m88xx0(int objid_);
-	virtual ~BranchHistory_m88xx0() override;
+	explicit BranchHistory_m88xx0(uint objid_);
+	~BranchHistory_m88xx0() override;
 
 	std::string FormatEntry(const BranchEntry& e) override;
 };
@@ -130,8 +136,8 @@ class BranchHistory_hd64180 : public Bra
 {
 	using inherited = BranchHistory;
  public:
-	BranchHistory_hd64180(int objid_);
-	virtual ~BranchHistory_hd64180() override;
+	explicit BranchHistory_hd64180(uint objid_);
+	~BranchHistory_hd64180() override;
 
 	std::string FormatHeader() const override;
 	std::string FormatEntry(const BranchEntry& e) override;