This message written: Thursday, 13 November 2003 18:23:56 PST

Have been working to get a successful upgrade of an 8500 with an XLR8 
Carrier Zif and an Apple G3 ZIF Processor.

Carrier, ZIF and XLR8 software installation went well.

However, I stuffed in a bunch of ram collected from a 7600 and this 8500 
to make a total of 272 MB, with 3 ea 64MB DIMMs and 5 ea 16MB DIMMs. 

When booted (OS 9.1) the machine will often hang just as extensions load. 
With a couple of 3 finger salutes it will usually boot to the desktop. 
Running an application works for a few minutes and then the system will 
either crash or hang.

I opened the case and shuffled the DIMMs around and now the problem seems 
to "wait" longer. Opening applications so that memory usage exceeds about 
64MB frequently causes the crash/hang problem.

I strongly suspect that one of the DIMMs is bad. Now, in order to 
minimize the number of times I have to remove the logic board (I am 
really beginning to despise that design!), is there a way to narrow the 
search for the bad DIMM? What is the sequence in which RAM is "used?" 
That is, which RAM slot/bank is used first?

Help!?

Ken

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