Force speed on Net.ether2100?

We are having startup problems on a crossover connected QNX 4.25 system
and several (but only one connection at a time!) embedded NT systems on
different hardware. The NT and QNX systems are powered up simultaneously
and are able to ping themselves, but not each other. We believe this is a
speed/duplex negotiation problem and have read various reports that
autoconfiguration is unreliable and that the configuration should be
accomplished manually. I do not see in the Net.ether2100 switches or tech
note a way to accomplish manual configuration. Is there a way to set the
speed and duplex modes manually?
David McMillan
Oak Ridge National Laboratory