Walter, Are you doing anything special with teh Table Instructions in the 17C42. We are looking at putting some I/O devices and RAM in the external map and want to use those instructions to access it. Perhaps a PEEK and a POKE built in? Thanks, John. PS. You mentioned on the phone a while back about some amazing upgrades that were in the works. How is it going? Pioneers are the ones, face down in the mud, with arrows in their backs. Automation Artisans Inc. Ph. 1-250-544-4950 PO Box 20002 Fax 1-250-544-4954 Sidney, BC CANADA V8L 5C9