Four DIP switches for the data to be loaded, one DIP switch for specifying operation (0: Load, 1: Increment), and one push-button for manual clock were connected. The value of the counter was display on 7-segments LED via D7SEGH macro (Figure 0.5).
Figure: Test Circuit for X74-163 (Programmable Counter)
Loading some arbitrary data, and increment from that value were tested.
