Re: the 9-track thread on the HP 7970: Mention has been made that it seems to have an HPIB interface. I ran into the same thing with an HP7974 drive that I acquired from Teltone here in Washington state. However, I also found that the HPIB interface consisted of a removable cage with three cards and its own power supply. Once this subassembly was removed, the drive itself appeared to be a standard Pertec interface. I have yet to actually try it, but a pair of 50-pin card-edge connections sure look like Pertec to me. I will let the group know once I get a chance to actually try it. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Sysop, The Dragon's Cave BBS (Fidonet 1:343/272) (Hamateur: WD6EOS) (E-mail: kyrrin2(a)wizards.net) http://www.wizards.net/technoid "Our science can only describe an object, event, or living thing in our own human terms. It cannot, in any way, define any of them..."