What all do you guys use for testing memory?

I have a few assorted diagnostic-type programs on hand here,  but many of
them are pretty dated and won't test large amounts of memory at all.  One I
can recall seemed to only go up to 16M or so.  And none of them are
terribly thorough about it.

I've been getting more and more frustrated with the stuff happening on this
machine I've been trying to do things with,  and need to verify that the
ram is either good or not.  I have a 486 here with dos/win3 on it and can
use that as a test fixture if need be.

The sizes I have on hand here are range from 4M to 32M per stick.

Any suggestions?

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