On Tue, 31 Mar 1998, Michael Sokolov wrote:

> Adam Fritzler <afritz@iname.com> wrote:
> > What exactly is a VAXserver 3300?
> 
> A Q-bus MicroVAX-type system with a KA640 CPU. KA640 is almost the same as
> KA650, but it's a bit slower (20 MHz instead of 22 and no 64 KB external cache)
> and it has on-board Ethernet and DSSI controllers. Of course VMS supports all
> of this, but unfortunately all other VAX OSes I know of fall short of this.
> Both 4.3BSD-* and NetBSD treat KA640 as a KA650, ignoring the on-board
> controllers. AFAIK, Ultrix either does the same or doesn't boot on KA640 at
> all.

Yes, Ultix will install on a KA640.  I've had v3.0 on a mVAX 3400.

Tom

> 
> > Is it the same as a MV3300?  How
> > different are they?
> 
> They use different versions of KA640 which in turn differ in one (1) bit in the
> EPROM. This bit tells VMS whether the machine is "multi-user" (MicroVAX) or
> "single-user" (VAXstation or VAXserver). Of course, 4.3BSD-* and NetBSD ignore
> it. If this bit bothers you (e.g., prevents you from using VMS the way you want
> to), take an EPROM burner and change it. KA650 has 2 27512 EPROMs, which
> virtually every EPROM burner should handle, and I assume that KA640 has the
> same.
> 
> > (Please...no month-long discussions about a
> > one-jumper difference need to come from this simple question!)
> 
> I hope that my answer is simple enough. Also note that if the discussions you
> are complaining about hadn't taken place, I wouldn't have this simple answer.
> 
> Sincerely,
> Michael Sokolov
> Phone: 440-449-0299
> ARPA Internet SMTP mail: sokolov@alpha.ces.cwru.edu
> 

--
Thomas Traylor
Thomas.Traylor@mci.com
ttraylor@titan.mcit.com
(719) 535-1269