tests/fig28-lutff-pair/golden.pb_type.xml

<?xml version='1.0' encoding='utf-8'?>
<pb_type xmlns:xi="http://www.w3.org/2001/XInclude" name="PAIR" num_pb="1">
  <clock name="CLK" num_pins="1"/>
  <input name="I" num_pins="4"/>
  <output name="O" num_pins="1"/>
  <pb_type name="ff" num_pb="1">
    <xi:include href="ff/ff.pb_type.xml" xpointer="xpointer(pb_type/child::node())"/>
  </pb_type>
  <pb_type name="lut" num_pb="1">
    <xi:include href="lut/lut4.pb_type.xml" xpointer="xpointer(pb_type/child::node())"/>
  </pb_type>
  <interconnect>
    <direct>
      <port name="CLK" type="input"/>
      <port from="ff" name="CLK" type="output"/>
    </direct>
    <direct>
      <port from="lut" name="O" type="input"/>
      <port from="ff" name="D" type="output"/>
      <pack_pattern name="LUT2FF" type="pack">
        <port from="lut" name="O" type="input"/>
        <port from="ff" name="D" type="output"/>
      </pack_pattern>
    </direct>
    <direct>
      <port name="I[0]" type="input"/>
      <port from="lut" name="I[0]" type="output"/>
    </direct>
    <direct>
      <port name="I[1]" type="input"/>
      <port from="lut" name="I[1]" type="output"/>
    </direct>
    <direct>
      <port name="I[2]" type="input"/>
      <port from="lut" name="I[2]" type="output"/>
    </direct>
    <direct>
      <port name="I[3]" type="input"/>
      <port from="lut" name="I[3]" type="output"/>
    </direct>
    <mux name="mux">
      <port from="lut" name="O" type="input">
        <metadata>
          <meta name="fasm_mux">L</meta>
        </metadata>
      </port>
      <port from="ff" name="Q" type="input">
        <metadata>
          <meta name="fasm_mux">F</meta>
        </metadata>
      </port>
      <port name="O" type="output"/>
      <metadata>
        <meta name="type">bel</meta>
        <meta name="subtype">routing</meta>
      </metadata>
    </mux>
  </interconnect>
</pb_type>