>I have not heard from anyone who knows how to translate the addresses
>which RAMometer reports into which memory stick has the problem. I
>think that first character in the addresses you reported should be a
>1 and not an I.
>
>The digits used above are in base 16 with A - E representing the
>digits from 10 - 15. The Address is the location in your memory
>which has the problem. the expected/read numbers are the numbers
>stored in that Address and the number which came back out of the
>Address. When what comes out does not match what goes in, it's bad.
>
>You clearly have one or more defective RAM DIMMs. How many DIMMs do
>you have? You need to do some testing with the RAM Sandwich method
>to determine which specific DIMM is bad.
>
>You see, RAMometer cannot test the memory which is occupied by the
>operating system. So even if a DIMM passes RAMometer, if that DIMM
>was storing part of the OS, then you don't know that that DIMM was
>good, because a section of the DIMM was not tested.
>
>The OS usually occupies space at the top and bottom of address space,
>so if you put one known good DIMM in A1 and another in A4 (assuming
>this is an x500 or x600 machine) then the DIMM(s) in A2 and A3 should
>get a good test. Leave the B bank empty.
>
>At this point I'm assuming that you don't know if any of your DIMMs
>are good. So what I would do is test just three DIMMs as described
>above at a time until you find a batch of three that will pass more
>than 30 iterations (you really need to run 1500, but this will do for
>now) of RAMometer. You can't be sure the two outer (A1 and A4)
>DIMMs are good, but the one in A2 or A3 is good, if RAMometer passes.
>
>
>Once you find a group of three which passes RAMometer, put a sticker
>on the middle DIMM (the one in A2 or A3) to mark it as good and move
>it to A1. Continue testing with other DIMMs in A4 and A2 or A3
>until you get another set which passes more than 30 iterations. Now
>take the middle DIMM from this batch and mark it with a sticker as
>well. Install it in A4.
>
>You now have two DIMMs which you know are good enough to pass more
>than 30 iterations of RAMometer. By putting them in A1 and A4 they
>will soak up the OS space (provided they're not 8 or 16 MB DIMMs--too
>small) . Now test all the rest of your DIMMs one or two at a time by
>installing them in A2 and/or A3 and running RAMometer again.
>Eventually, you'll get a failure again, and that will be the one that
>is causing your problems.
>
>To really test your RAM you should do the above with 1500 iterations
>of RAMometer (including the part to identify good RAM for the outer
>slots). RAMometer can take as many as 1200 - 1300 iterations to
>find a failure. I haven't heard any reports above 1300 iterations,
>but I like to use 1500 as a margin. Most failures turn up in the
>first 50 iterations though.
>
>Jeff Walther
Thanks Jeff - great to hear it....
Pete
--
PCI-PowerMacs is sponsored by <http://lowendmac.com/> and...
Small Dog Electronics http://www.smalldog.com | Refurbished Drives |
-- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! |
Support Low End Mac <http://lowendmac.com/lists/support.html>
PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml>
--> AOL users, remove "mailto:";
Send list messages to: <mailto:[EMAIL PROTECTED]>
To unsubscribe, email: <mailto:[EMAIL PROTECTED]>
For digest mode, email: <mailto:[EMAIL PROTECTED]>
Subscription questions: <mailto:[EMAIL PROTECTED]>
Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/>
Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
