--- nono/vm/sio.h	2026/04/29 17:04:56	1.1.1.7
+++ nono/vm/sio.h	2026/04/29 17:05:07	1.1.1.8
@@ -26,6 +26,8 @@ class SIODevice : public uPD7201Device
 	static const uint32 NPORT = 4;
 	uint64 Peek(uint32 offset);
 
+	void Tx(int ch, uint32 data) override;
+
  private:
 	void Interrupt() override;
 };