[TUHS] TK50, was: Re: Ultrix Tape: Block Size?

Tom Ivar Helbekkmo tih at hamartun.priv.no
Thu Oct 18 17:48:22 AEST 2018

I wrote:

> I'll have to open up my PDP-11/83 tonight.  Its TK50 will stream while
> writing, as long as what's being written can be read reasonably fast
> from (RQDX3/RD54) disk.  The TQK controller is sitting right up at the
> top end of the Q-bus, to get high priority -- but I don't know if it's a
> TQK70.  I've really just assumed it's a TQK50 without thinking too much
> about it...

Turns out it's an M7546; a TQK50.  I guess I'll get streaming writes
more often with an M7559 (TQK70) than I do at the moment, then.  :)

Most people who graduate with CS degrees don't understand the significance
of Lisp.  Lisp is the most important idea in computer science.  --Alan Kay

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