--- nono/vm/mpu88xx0.h	2026/04/29 17:04:50	1.1.1.7
+++ nono/vm/mpu88xx0.h	2026/04/29 17:04:52	1.1.1.8
@@ -15,10 +15,12 @@ class MPU88xx0Device : public MPUDevice
 {
 	using inherited = MPUDevice;
  public:
-	MPU88xx0Device(uint32 reset_vector);
+	MPU88xx0Device();
 	virtual ~MPU88xx0Device() override;
 
 	bool Init() override;
+	bool PowerOn() override;
+	void ResetHard() override;
 
 	void MonitorUpdate(TextScreen&) override;
 
@@ -48,9 +50,6 @@ class MPU88xx0Device : public MPUDevice
 	m88kcpu *GetCPU() const { return cpu.get(); }
 
  private:
-	// イベントコールバック
-	void Callback(Event& ev);
-
 	std::unique_ptr<m88kcpu> cpu {};
 };