Artifact Details Title CDC 8500 preliminary reference manual Catalog Number 102734690 Type Document Description Includes preliminary 8500 reference manual; 8000 series instruction codes; 8000 PNP exchange package; and handwritten notes on PPUs, I/O. Date 1970-1972 Publisher Control Data Corporation (CDC) Category Manual Collection Title George A. Michael papers Series Title CDC manuals Credit Gift of George Michael Lot Number X4269.2008