MicroVAX 3

From: Clint Wolff <vaxman_at_oldy.crwolff.com>
Date: Mon Sep 6 16:16:46 1999

I'm using a KA650 in a MicroVAX II cabinet w/no problems. I forget
the magic name for it, it is the 1' x 2' x 2.5' cabinet on wheels.

I just pulled the KA630 and RAM out, put the KA650 (w/ new RAM) in,
plugged in the old cab kit and it ran fine (except having to
recompile Ultrix to recognize the new CPU). The VMS FAQ says the
same cab kit was used with the KA630, KA650, and KA655 boards.

You did use the KA650 RAM didn't you? I believe the PMI connectors
don't line up very well if you goof.

I also recall something about a problem with certain older 3rd party
boards. IIRC the QBus interface chip on the KA650 had a bug in it
(that DEC refused to acknowledge... Deliberate bug perhaps) that
caused problems with 3rd party boards, specifically the TSV05 tape
controller, but might be more.

But, to answer your question, no, I don't know of a writeup on the
KA650 POST numbers... Sorry....


PS I have a working system here running Ultrix... If you want to
send me your boards, I can swap them with mine and see if one is

On Sun, 5 Sep 1999, Zane H. Healy wrote:

> I've got a KA650 and RAM boards thanks to my last haul, I believe it's the
> kind they sold to upgrade a MicroVAX II to a MicroVAX III. Anyway I'm
> wondering if they needed their own Cab Kit, or can use the MV2 Cab Kit.
> I pulled the board set out of the BA123, and swapped it with a MV2 board
> set in a Sigma Rack mount chassis, unfortunatly the system seems to be
> having problems. Another thought would be the RQDX3 revision as I didn't
> swap them.
> Also is there a writeup anywhere on what the various tests are as it counts
> down?
> Zane
> | Zane H. Healy | UNIX Systems Adminstrator |
> | healyzh_at_aracnet.com (primary) | Linux Enthusiast |
> | healyzh_at_holonet.net (alternate) | Classic Computer Collector |
> +----------------------------------+----------------------------+
> | Empire of the Petal Throne and Traveller Role Playing, |
> | and Zane's Computer Museum. |
> | http://www.aracnet.com/~healyzh/ |
Received on Mon Sep 06 1999 - 16:16:46 BST

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