Opening a VAX2000

From: Ethan Dicks <>
Date: Thu Mar 18 22:29:38 2004

On Thu, Mar 18, 2004 at 07:43:43PM -0800, Michael Sokolov wrote:
> Ethan Dicks <> wrote:
> > For the unaware, the difference between a VAXstation 2000 and a
> > MicroVAX 2000 is the plastic badge on the front, sometimes an
> > add-on framebuffer in the VS2000, and the position of a jumper
> > that identifies the CPU type as one vs the other (KA610 vs KA620?)
> No, it's KA410-A vs. KA410-B, though I don't remember which is which.

Ah... that's it.
> KA610 is MicroVAX I.

> KA620 is something I've heard about, but never figured out exactly what it was.

I was thinking that the uVAX was "below" a KA630, but forgot it was KA4xx... I
just threw out the KA620 number. My memory fault.

> The jumper (readable via the CFGTST_MULTU bit in the Configuration and Test
> Register) tells the firmware and OS how to talk to the console. If MULTU=1,
> send/receive ASCII to/from SLU port 0 at 9600 baud. If MULTU=0, set SLU port 0
> to 4800 baud instead, except LK201 keycodes instead of ASCII coming from it, and
> output must be scribbled on the bitmap display.

Cool. I never knew the specifics, just the consequences.
> MS (right in the process of coding MV/VS 2000 & 3100 support for Quasijarus)

Neat. Hopefully memory won't be an issue. These things (as I'm sure you know
well) don't take much, but neither does a uVAX-II (KA630). Well... it's plenty
for the software of the day (and plenty for ASCII-based consoles).


Ethan Dicks, A-130-S      Current South Pole Weather at 19-Mar-2004 17:19 Z
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Received on Thu Mar 18 2004 - 22:29:38 GMT

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