--- nono/vm/newsctlr.h	2026/04/29 17:05:18	1.1.1.1
+++ nono/vm/newsctlr.h	2026/04/29 17:05:43	1.1.1.5
@@ -16,11 +16,15 @@
 
 class DipswDevice;
 class NewsInterrupt;
+class TextScreen;
 
 class NewsCtlrDevice : public IODevice
 {
 	using inherited = IODevice;
 
+	// システムタイマーの周期
+	static const uint64 TIMER_PERIOD	= 10_msec;
+
  public:
 	// LED 種別
 	static const uint LED_GREEN		= 0x01;
@@ -33,11 +37,13 @@ class NewsCtlrDevice : public IODevice
 	bool Init() override;
 	void ResetHard(bool poweron) override;
 
-	uint64 Read8(uint32 addr) override;
-	uint64 Write8(uint32 addr, uint32 data) override;
-	uint64 Peek8(uint32 addr) override;
+	busdata Read(busaddr addr) override;
+	busdata Write(busaddr addr, uint32 data) override;
+	busdata Peek1(uint32 addr) override;
+
+	uint GetLED() const { return led; }
 
-	int GetLED() const { return led; }
+	void MonitorUpdateNewsCtlr(TextScreen& screen, int y);
 
  private:
 	uint8 GetIDROM(uint32 addr) const;
@@ -53,11 +59,17 @@ class NewsCtlrDevice : public IODevice
 	// 256 x 4bit ROM (ここではデータをバイト単位で保持する)
 	std::array<uint8, 128> oidrom {};
 
-	int led {};
+	uint led {};
 	// タイマー
 	bool timer_intr {};
 	bool timer_enable {};
 
+	// システムタイマーが刻んている時刻。
+	uint64 stime {};
+
+	// システムタイマーを実時間に同期する場合 true
+	bool sync_rt {};
+
 	DipswDevice *dipsw {};
 
 	Event timer_event { this };