KZQSA and disks, was Re: MicroVax II question

From: Jochen Kunz <jkunz_at_unixag-kl.fh-kl.de>
Date: Wed Jan 7 03:40:05 2004

On Tue, 6 Jan 2004 21:08:15 +0100 (MET)
"Fred N. van Kempen" <waltje_at_pdp11.nl> wrote:

> such as the KZQSA. Which, if memory serves me right, was just an NCR
> 5340 or 5380 atop a Qbus bus interface..
Maybe I should have written somthing like this in my first mail.
AFAIK the KZQSA is "dump", it doesn't support (T)MSCP and has no
embedded processor like the KFQSA or RQDXn. It is only of use in a VAX
4000 QBus machine, as only this machines have the needed ROM code for
booting from it. So this thing is of no real use on a PDP-11 or an older
VAX and it doesn't fit into a BA23 or BA123. (Even when you remove the
SBox handle. The connectors are to big for the smaler card spaceing in a
BA23 or BA123.) It may be possible to attach and use tapes, CDROMs and
even disks to it. But DEC intended it as tape or CDROM controler, not
for disks.
-- 
tsch??,
       Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
Received on Wed Jan 07 2004 - 03:40:05 GMT

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