problem with 88 MB memory configuration on UDB

Eric Smith (eric@goonsquad.spies.com)
Mon, 23 Sep 1996 11:24:37 -0700 (PDT)

I recently upgraded one of my UDBs from the original 24 MB configuration
to 88 MB (a pair of 12 MB SIMMs and a pair of 32 MB SIMMs).

When I set the memory size to 88 MB in Milo (2.0.0), Linux started reported
accesses to non-existent memory. Not bad ECC, but non-existent memory. I'd
never seen that message before.

I reduced the memory size specified to Milo to 80 MB, and everything has
worked fine. I haven't tried other sizes yet.

I don't believe this could be caused by bad SIMMs. Bad SIMMs could return
bogus data that would be flagged as ECC errors, but they couldn't prevent
the memory controller from completing the cycle.

Cheers,
Eric