AlphaStation 200 NVRAM Problem

Peter Coghlan cctalk at
Mon May 2 04:42:21 CDT 2016

> >
> >  One possibility I have in mind is it's something peculiar about DRAM.
> > As you may have been aware DROM code isn't run directly, it's loaded by
> > SROM into DRAM.  If it fails a specific bit pattern at a specific location 
> > some reason, then you might see symptoms like these.  So shuffling DRAM
> > modules might change something here.
> I will give this a go, but it seems unlikely as the machine is able to run
> VMS, and I assume it must be passing at least some basic memory tests.

Perhaps VMS could be working around correctable memory errors that SROM
is not able to cope with?  If this is the case,


should give a clue and there should be further information in the error log.
(I'm not sure how you display that since the functioning of $ ANALYZE /ERROR
got messed up on Alpha some time ago.)

Peter Coghlan.

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