Thank you for your request for the UNIX operating system. The current version of UNIX requires at least the following equipment: .sp PDP-11/40 (with EIS) or PDP-11/45 CPU KT segmentation option 32K words of core RK or RP disk KW (line or programmable) clock standard DEC console (LA, VT, or LT) .sp In addition, UNIX will support .sp RF disk TM magtape TC DECtape PC paper tape reader/punch DC line adapter DP line adapter DN ACU interface .sp You should send me a complete list of your configuration plus one of the following: .sp 600'-2400' (9 track 800 bpi) magtape RK03/RK05 disk cartridge RP03 disk pack .sp I will be able to send the system and manuals for the system as soon as I hear from you.