> > > > 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, $ SHOW ERROR 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.) Regards, Peter Coghlan.
