--- nono/vm/sysclk.h	2026/04/29 17:04:42	1.1.1.4
+++ nono/vm/sysclk.h	2026/04/29 17:04:50	1.1.1.6
@@ -15,7 +15,7 @@ class SysClkDevice
 	using inherited = IODevice;
  public:
 	SysClkDevice();
-	~SysClkDevice() override;
+	virtual ~SysClkDevice() override;
 
 	bool Init() override;
 	bool PowerOn() override;
@@ -23,9 +23,9 @@ class SysClkDevice
  protected:
 	// BusIO インタフェース
 	static const uint32 NPORT = 1;
-	uint64 Read(uint32);
-	uint64 Write(uint32, uint32);
-	uint64 Peek(uint32);
+	uint64 Read(uint32 offset);
+	uint64 Write(uint32 offset, uint32 data);
+	uint64 Peek(uint32 offset);
 
  private:
 	// イベントコールバック
@@ -40,3 +40,5 @@ class SysClkDevice
 	// 割り込みイベント
 	Event event {};
 };
+
+extern std::unique_ptr<SysClkDevice> gSysClk;