Bidirectional parallel port

I have received a shipment of motherboards that absolutely
refuse to work in bidirectional mode. I have set them to
EPP in CMOS, but they only work as uni-directional ports.

Any workarounds, fixes, ideas?

              Jim Kaufman / Eden Prairie, MN / jmk@hi-key.com
	Director of Software Engineering, Hi-Key Technologies, Inc.
Remember, you're fighting for this woman's honor - which is probably more 
than she ever did.
		-- Groucho Marx