I suggest the text below to be added to http://www.netbsd.org/Ports,
section #suggested-other.  Since there seems to be some interest in
a port, perhaps a port-pdp10 mailing list could be created?  If so,
please change the contact address below.

<li><a href="http://pdp10.nocrew.org/">DEC PDP-10</a><br>
    "PDP-10" is the commonly used name for the processor architecture
    used in the DECsystem-10 and DECSYSTEM-20 mainframes.  The first
    version of the architecture, with an 18-bit address space, would
    not be suitable for a port.  However, a later version of the
    architecture extended the address space to 30-bits.  A NetBSD port
    should be possible as soon as the
    <a href="http://pdp10.nocrew.org/gcc/">PDP-10 GCC port</a> is
    ready.  It wouldn't require access to a real machine to start
    development since the
    <a href="http://klh10.trailing-edge.com/">KLH10</a> emulator
    supports the extended architecture.
    <p>
    Contact: <a href="mailto:netbsd-ports@netbsd.org">netbsd-ports@netbsd.org</a>.
    <p>