If LabWindows/CVI does not have direct access to this port, then would it have access to the Parallel Port Communications Driver: NTPORT.OCX from www.uct.on.ca/ many thanks, Lloyd Weida senior test develop. engineer.
the utility library in CVI has the inp and outp to access the PC's I/O ports. You can probably find examples on the web on how to program the registers of the parallel port controller.