We are in the process of replacing the HP 300 series machine with a standard PC, IEEE488(gpib) pci card. What we are looking for, is any information on what commands and addresses are used by the Sheffield MP 20, to be able to talk to it and set it up. Sheffield people said this would be the place,if there was someone that had converted from the Rocky Mountain Basic or had programming information on how to talk to the MP 20 using the standard IEEE488 interface. Any help would be great, Thank You, Roger O. Kremers