Opening a VAX2000

From: Michael Sokolov <msokolov_at_ivan.Harhan.ORG>
Date: Thu Mar 18 21:43:43 2004

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.

KA610 is MicroVAX I.

KA620 is something I've heard about, but never figured out exactly what it was.
It was some kind of slightly hobbled KA630, wasn't it? Maybe a KA630 w/o FPU?
Does anyone know? I'm quite curious, as that's a gap in my VAX knowledge and
such gaps bother me. :-)

> The firmware is the same, as is the default behavior
> when loading VMS

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.

MS (right in the process of coding MV/VS 2000 & 3100 support for Quasijarus)
Received on Thu Mar 18 2004 - 21:43:43 GMT

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