--- nono/vm/goldfish_timer.h	2026/04/29 17:05:25	1.1.1.1
+++ nono/vm/goldfish_timer.h	2026/04/29 17:05:29	1.1.1.2
@@ -27,9 +27,12 @@ class GFTimerDevice : public IODevice
 	bool Init() override;
 	void ResetHard(bool poweron) override;
 
-	busdata Read32(uint32 addr) override;
-	busdata Write32(uint32 addr, uint32 data) override;
-	busdata Peek8(uint32 addr) override;
+ protected:
+	// BusIO インタフェース
+	static const uint32 NPORT = 0x1000 >> 2;
+	busdata ReadPort(uint32 offset);
+	busdata WritePort(uint32 offset, uint32 data);
+	busdata PeekPort(uint32 offset);
 
  private:
 	DECLARE_MONITOR_CALLBACK(MonitorUpdate);