Scanned more docs related to the the UNIVAC 1219, also known by the US Navy as the MK 152 Computer. MK 152 Computer Repertoire of Instructions Reference Card http://www.vintagecomputer.net/univac/1219/UNIVAC_MK%20152%20Computer%20Inst ruction%20Set.pdf Toggle in program to print addresses set by the bootstrap loader (or any block of memory) http://www.vintagecomputer.net/univac/1219/UNIVAC_1219_Print_Addresses_Boots trap.pdf UNIVAC 1219 / MK 152 Bootstrap Loader http://www.vintagecomputer.net/univac/1219/UNIVAC_1219_Bootstrap.pdf Brochure scan and Duane Craps' 1219 emulator: http://vintagecomputer.net/univac/1219/ Bill