diff --git a/Components/6526/6526.hpp b/Components/6526/6526.hpp
index 4845368d7..5dc8299d6 100644
--- a/Components/6526/6526.hpp
+++ b/Components/6526/6526.hpp
@@ -12,6 +12,7 @@
 #include <cstdint>
 
 #include "Implementation/6526Storage.hpp"
+#include "../Serial/Line.hpp"
 
 namespace MOS {
 namespace MOS6526 {
@@ -63,6 +64,13 @@ template <typename PortHandlerT, Personality personality> class MOS6526:
 		/// Sets the current state of the CNT input.
 		void set_cnt_input(bool active);
 
+		/// Provides the serial input bit.
+		Serial::Line serial_input;
+
+		/// Optionally sets CNT to automatically toggle based on the events
+		/// generated by @c serial_input.
+		void set_cnt_tied_to_input(bool);
+
 		/// Sets the current state of the FLG input.
 		void set_flag_input(bool low);