>I ran Ramometer and came up with 3 error messages after 28 passes.
>
>Memory Error at Address $IDE354EC expected $07FD2ADO but read $07FD2ACO
>Memory Error at Address $IDE414EC expected $003FE2956 but read $003FE296
>Memory Error at Address $IDE364EC expected $003FE2956 but read $003FE296
>
>Unfortunately I have no idea what any of this means.
>
>
>Linda
It means you have at least one bad stick of ram - maybe more - and
now the 8500 heartache begins as you have to individually test each stick
to find the baddy(s). You have found the most probable cause of the 10
error and need to return the bad stick(s) for good ones.
Start with just one stick and run the test again for 1500+ passes -
success means marking the stick ok (then at least you can run the mac
with one stick) and adding another or replacing it with another (I tend
to test one stick at a time as the Umax S900 is so easy to access so I
test the ram for the 8500 in it) - failure means marking it as garbage
and trying the next one - and so on for all the sticks you have....
I think Jeff Walther has another method called the 'sandwich method'
and with luck maybe he'll chime in and remind me - but the bench mark is
still around 1500+ passes per method whichever.
A 128 MB stick has over one billion tiny switches (bits - eight of
which make a byte) set to on or off state (0 or 1 perhaps - or + charge
is substituted with some read/write devices) and if the state of one or
more of these switches cannot be changed the stick is defective. The
references from Ramometer are in hexadecimal base 16 code address but
they add up to the same thing - bad ram. TechToolPro will run a more
sophisticated battery of tests but I've found the results are identical
to Ramometer.
If my maths is bad - I've had a hard day decorating and I'm
tired....the smell of paint etc.
Pete
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