On Sat, 31 Mar 2018, Peter Coghlan via cctalk wrote: > I ran the various tests provided by the different jumper settings on my second > 3000 600 and I found that the memTest (no-cache) LongWord Memory Test > (position > 5, J3) failed as well as the tests involving the cache. In an attempt to find > which memory was failing, I swapped around the memory risers. Bizarrely, the > (no-cache) failures went away completely when I swapped around the front two > risers. The failures returned when I swapped them back. This is very odd as > the two risers appear to be identical and seem to be populated with identical > SIMMs.
Have you tried cleaning the pins? The riser connectors are the same style DECstation 5000/200 MS02 memory modules use and I had cases of ECC errors appearing with those which went away once thorougly cleaned with IPA. Lone reseating didn't help. Maciej