pkoning at equallogic.com
Thu Aug 25 15:29:02 CDT 2005
>>>>> "Joe" == Joe R <rigdonj at cfl.rr.com> writes:
Joe> I picked one of these up a while back and stumbled across it
Joe> yesterday. It's a model TU80 IIRC. Does anyone have
Joe> anyexperience with them? I've never seen or heard of one in
Joe> actual use but I know it's supposed to be useable on the PDP-8
Joe> so I may try to hand it on my -8 if they're any good (and I can
Joe> find the right interface card). What kind of cassette tapes do
Joe> they use and how hard are they to find and format?
It wouldn't be a TU80, that's a half inch 9 track streaming tape drive
(predecessor of the TU81/TA81). Its controller speaks the TS11
programming interface (ugh).
What you describe sounds like a TA11. That's probably really the
controller name; I'm not sure what the drive is called. The 1976
PDP-11 peripherals handbook lists the TA11 (it's on Bitsavers).
The description says that it uses "proprietary DEC Philips-type
cassettes". What that proprietariness consists of is not clear; it
may mean that is has digital tape (square loop) as opposed to audio
tape in the cassette. Quite possibly a plain old audio cassette may
work (ferrite type -- but if that fails then chrome tape might be
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