I have a 16-bit ISA card labelled "Arnet 30500404 Copyright 1993 Arnet Corp. Made in USA". It has 2 HD-15 female connectors labelled Line1 and Line2, a bunch of discrete logic, 6 PALs and a Hitachi HD64570CP 2-port Serial Communications Adapter chip. A google search tells me only that it might have been an S/570 adapter, but I have no idea what S/570 was (the most common hit seems to be for a scanning electron microscope?) and if I can trust the one parts dealer that seems to have one to know what it actually is :-) Anyone know what this board does? Anyone want it? Alexey