The Other wrote: > From a Google search on the DS80C320 chip: The Dallas Semiconductor > DS80C320 is an 8051 based High-Speed Micro with 2 DPTRs, WDT, Two > Serial Ports, ... > > From a Google search on the TL16C552FN chip, all that readily > appeared were prices and vendors. <http://focus.ti.com/docs/prod/folders/print/tl16c552.html> We don't know how these chips are connected to the ISA bus. I guess it would be necessary to reverse engineer the Windows drivers. Clemens