[rescue] howto make multiple main boards work on a Sun Sparc 670/MP

[Bill Bradford]

Of course you cant do multiple CPU boards *with expansion cards*.

The 4/6x0 boards are complete self-contained systems-on-a-card.

Bill

On Fri, Jun 15, 2001 at 08:50:40AM -0400, Joshua D. Boyd wrote:
> What about, say Sun3 and Sun4 in the same case, both with their own
> expansion boards (say, main board and 2 memory boards for Sun4, and
> Mainboard, memoryboard, and SCSI board for Sun3, with a CG2 that could be
> used by either).
> 
> --
> Joshua Boyd
> 
> On Fri, 15 Jun 2001, Dave McGuire wrote:
> 
> > 
> >   Untrue.  While they WILL be completely separate systems, they will
> > happily coexist in the same unmodified backplane if configured
> > properly.  There are a bunch of them running a block up the street
> > from where I'm sitting.
> > 
> >           -Dave McGuire
> > 
> > On June 14, Kevin Loch wrote:
> > > Not only do they not work together as one system, you cannot
> > > use them in the same chassis without gutting the VME interconnects.
> > > 
> > > KL
> > > 
> > > Rob wrote:
> > > > 
> > > > Hi,
> > > > 
> > > > I recently picked up a Sun 670/MP, and a spare cpu board, and it would be
> > > > really nifty if I could get them to both work at the same time.  From talking
> > > > to Wise People, it would seem that  I can't get them to work as one computer
> > > > with shared resources: is that correct?  If I read the FAQ correctly, I am
> > > > talking about two fully populated (4cpu, 128 mb) 501-1899 boards, but I can't
> > > > find the number on the boards to confirm the model number.
> > > > 
> > > > If that is the case, I read in a different FAQ something about being able to
> > > > make them work as multiple independent computers.  Unfortunately, all it says
> > > > about *how* to do this is it would be 'tricky'.  This is from
> > > > http://www.sunhelp.org/faq/sunref2.html , "Miscellaneous Questions and
> > > > Answers" #9 .   Does anyone have any information about how to do this?
> > > > 
> > > > I apologize if this is a common question.  I tried looking through the
> > > > archives, but if there is a search feature, I couldn't find it.
> > > > 
> > > > TIA,
> > > > 
> > > > - Rob
> > > > .
> > > > 
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> 
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-- 
Bill Bradford
mrbill at mrbill.net
Austin, TX