Hi, All I'm back at the grind trying to find a few OS's The first is for my TEK DPO (WP 1210 Digitial processing scope ) this is a 7704a scope with a P7001 Digital processor that connects to a DEC PDP 11/05 . It runs on TEK Basic (8" floppy or DEC tape}.. The official name is "TEK SPS Basic V02" There is also a system test disk. I also need a TEK 4010 Terminal to finish it off. If anyone in the Seattle area has one. The second is a Pertec Mini ?? coax system 4010 Don't know much about it other than it used coax to the dumb terminals instead of Serial.. (1/4 " Tape) The third is a OMS Zues 4 I beleive it ran cpm or mpm (5 1/4 disk) The forth is a Altos 5 CPM or MPM (5 1/4 Disk) I can handle most image files. Or would gladly pay for a Disk or tape. If I missed somewhere online, point me in the right direction Thanks, for reading this Jerry Jerry Wright JLC inc 800.292.6370 PST g-wright at att.net