Multi-CPU Qbus VAXen

From: Eric Smith <>
Date: Wed Oct 8 16:14:35 2003

"Steven M Jones" <> wrote:
> On a related note, I there's a MicroNote about running multiple
> MicroVAX II CPUs (KA630, M7606) in a single backplane. Up to 4
> in fact (MicroNote #26, on Has anyone on the
> list ever worked with, built, or seen such a beast? Did any
> interesting OS research projects of the time use this feature
> (I'm thinking V or Mach)?

The resulting system does not have shared memory (except for any
Qbus memory), so it isn't generally suitable for operating systems
that support SMP. That's one reason why DEC never officially
supported such configurations.
Received on Wed Oct 08 2003 - 16:14:35 BST

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