quicklogic/pp3/primitives/bidir/bidir_cell.model.xml

<models xmlns:xi="http://www.w3.org/2001/XInclude">
  <model name="BIDIR_CELL">
    <input_ports>
      <port name="I_EN" combinational_sink_ports="I_DAT"/>
      <port name="I_PAD_$inp" combinational_sink_ports="I_DAT"/>
      <port name="O_DAT" combinational_sink_ports="O_PAD_$out"/>
      <port name="O_EN" combinational_sink_ports="O_PAD_$out"/>
    </input_ports>
    <output_ports>
      <port name="I_DAT"/>
      <port name="O_PAD_$out"/>
    </output_ports>
  </model>
</models>