At 17:08 -0400 04/27/2002, Nancy Haitz wrote:

>I guess I will pull the RAM from the c600 and test everything in the
>9600, as it has more RAM slots, which will go faster.  After I check our
>old stuff, I can start testing the new chips I purchased.

The 9600 has twelve DIMM sockets.  In this case you can put a known 
good DIMM in A1 and the other in A6.   This will let you test up to 
four at a time in A2 - A5.  However, if you have a failure, you won't 
know which of the four is the culprit.  That's where those addresses 
that RAMometer reports would come in handy, if any of us knew how to 
translate those addresses into physical sticks of RAM.

If you don't know if any of your DIMMs are good, try the RAM sandwich 
with a few combinations of DIMMs that you suspect are good.  If a RAM 
sandwich passes the test, then the DIMM(s) in the middle are good, 
but you still don't know about the ones on the outside.   Then you 
can use the ones that passed in the middle as your known good DIMMs 
in future tests.

Note that the exact converse is not true.  If a RAM sandwich fails, 
you don't know that it was the DIMMs in middle that caused the 
failure.  It could have been the portion of the "bread" which is not 
occupied by the OS.   This only applies when you don't have any known 
good DIMMs.   Once you have established that a couple of your DIMMs 
are error free, you use them as the bread, and presume that any 
failures are in the meat, because you *know* that the bread is error 
free.

Jeff Walther

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