TK50 flavours

From: <(>
Date: Sun Aug 8 16:48:04 1999

   From: "r. 'bear' stricklin" <>

> Is a TK50-D not a SCSI device? It sure bears only about a fifth of a
> superficial resemblance to one.
> If not what is it used with?

   The -FA and -GA models have a SCSI controller board (TZK50) with the
drive, in the box which is about 12.5 inch (32 cm) wide.

   Assuming that the "-D" is the one which is about two-thirds as wide,
it is just the raw drive with its ribbon cable going to a (largely idle)
50-pin D connector (as I recall). It connects to a suitable controler,
such as the Q-bus TQK50 or the UNIBUS TUK50. I believe that it was most
commonly used with big-old UNIBUS machines like the VAX-11/7xx, which
had no convenient place for an internally mounted TK50 drive, whereas
most Q-bus systems did.

   Nowadays, the most common use for one is probably as a safe place to
keep a spare drive, in case the drive in one's -FA or -GA fails.


   Steven M. Schweda (+1) 651-645-9249 (voice, home)
   1630 Marshall Avenue #8 (+1) 612-754-2636 (voice, work)
   Saint Paul MN 55104-6225 (+1) 612-754-6302 (facsimile, work) (work)
Received on Sun Aug 08 1999 - 16:48:04 BST

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:31:49 BST