xn with manually specified routing

gistfile1.xml

<?xml version="1.0" encoding="UTF-8"?>
<Network xmlns="http://www.xmos.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xmos.com http://www.xmos.com">
  <Type>Board</Type>
  <Name>XDSP</Name>
  <Declarations>
    <Declaration>tileref tile[2]</Declaration>
  </Declarations>
  <Packages>
    <Package id="USB" Type="XS1-LnA-64-TQ48">
      <Nodes>
        <Node id="USB" Type="XS1-L8A-64" InPackageId="0" oscillator="13Mhz" systemfrequency="500MHz" referencefrequency="100MHz" RoutingId="0">
          <Boot>
            <Source Location="SPI:bootFlash"/>
            <Bootee NodeId="AUDIO" Tile="0"/>
          </Boot>
          <Tile Number="0" Reference="tile[0]">
            <Port Location="XS1_PORT_1A" Name="PORT_SPI_MISO"/>
            <Port Location="XS1_PORT_1B" Name="PORT_SPI_SS"/>
            <Port Location="XS1_PORT_1C" Name="PORT_SPI_CLK"/>
            <Port Location="XS1_PORT_1D" Name="PORT_SPI_MOSI"/>
          </Tile>
          <RoutingTable>
            <Bits>
              <Bit number="15" direction="0"/>
            </Bits>
            <Links>
              <Link name="X0LC" direction="0"/>
            </Links>
          </RoutingTable>
        </Node>
      </Nodes>
    </Package>
    <Package id="AUDIO" Type="XS1-LnA-64-LQ64">
      <Nodes>
        <Node id="AUDIO" Type="XS1-L8A-64" InPackageId="0" oscillator="12288KHz" systemfrequency="500MHz" referencefrequency="100MHz" RoutingId="32768">
          <Boot>
            <Source Location="LINK"/>
          </Boot>
          <Tile Number="0" Reference="tile[1]"/>
          <RoutingTable>
            <Bits>
              <Bit number="15" direction="0"/>
            </Bits>
            <Links>
              <Link name="X0LB" direction="0"/>
            </Links>
          </RoutingTable>
        </Node>
      </Nodes>
    </Package>
  </Packages>
  <Links>
    <Link Encoding="2wire" Delays="6,6">
      <LinkEndpoint NodeId="USB" Link="X0LC"/>
      <LinkEndpoint NodeId="AUDIO" Link="X0LB"/>
    </Link>
  </Links>
  <ExternalDevices>
    <Device Nodeid="USB" Tile="0" Name="bootFlash" Class="SPIFlash" Type="AT25DF041A">
      <Attribute Name="PORT_SPI_MISO" Value="PORT_SPI_MISO"/>
      <Attribute Name="PORT_SPI_SS" Value="PORT_SPI_SS"/>
      <Attribute Name="PORT_SPI_CLK" Value="PORT_SPI_CLK"/>
      <Attribute Name="PORT_SPI_MOSI" Value="PORT_SPI_MOSI"/>
    </Device>
  </ExternalDevices>
  <JTAGChain>
    <JTAGDevice Nodeid="USB" Position="0"/>
    <JTAGDevice Nodeid="AUDIO" Position="1"/>
  </JTAGChain>
</Network>