<models xmlns:xi="http://www.w3.org/2001/XInclude">
  <model name="CBLOCK">
    <input_ports>
      <port combinational_sink_ports="COUT O" name="CIN"/>
      <port combinational_sink_ports="COUT O" name="I"/>
    </input_ports>
    <output_ports>
      <port name="COUT"/>
      <port name="O"/>
    </output_ports>
  </model>
</models>