--- nono/vm/pedec.h	2026/04/29 17:05:17	1.1.1.7
+++ nono/vm/pedec.h	2026/04/29 17:05:20	1.1.1.8
@@ -55,7 +55,7 @@ class PEDECDevice : public InterruptDevi
 	uint64 Peek(uint32 offset);
 
  private:
-	uint32 GetIntmap(Device *source) const override;
+	uint32 GetIntmap(const Device *source) const override;
 
 	// 割り込みステータスレジスタの値を取得
 	uint32 GetStat() const;