> From: Jeff Walther <[EMAIL PROTECTED]> > Subject: Re: [PCI] Number of starts for my 7600 today... > > At 15:30 -0400 08/13/2005, PCI PowerMacs wrote: > >> Date: Sat, 13 Aug 2005 11:08:45 +1000 >> From: David Elmo <[EMAIL PROTECTED]> > >> Today, 15 starts. But Gauge Pro in a spare moment when I have a break, has >> come up with a memory error, which might explain all this nonsense that has >> been going on for so long. "Memory Error at address $01FF4AB4 but read >> $05FF4AB4" I don't suppose anyone can say how i can usefully use this notice >> to pinpoint the chip concerned? If the following gets all unwrapped, I am >> sorry. >> > Do you remember how many iterations before the failure appeared? > Some memory defects are obvious (memory cell stuck at 1 or stuck at > 0) and some are subtle (requires certain pattern of data in > surrounding cells to trigger problem in defective cell). The obvious > defects are usually detected within a few score iterations. The > subtle defects require up to 1300 iterations to detect. > > To reliably test your memory, you need to use the RAM Sandwich > method. This involves testing with three DIMMs at a time. Put known
snip > > Jeff Walther Thanks Jeff for this, I appreciate it. As it happens, Gauge Pro picked it at the 6th iteration on the last occasion (but not at all on previous occasions where my patience ran out). I have had faults in the past where I have had to go over 1200. As I explained to Glen in another reply, I have solved the severe prob by yanking all out and reseating in a different box. I did my own quick and dirty method of testing each stick by seeing if it, on its very own, (no other stick in any other slot) would boot the machine and enable opening of apps and restart and shutdown. This is quick enough but not the best. I have a test rig in a back room and it can test sticks over longer periods and yes, according to many of the algorithms you have so soundly explained. I must use it! And build a set of trusted Dimms... Today it was pleasure to turn on my machine and watch it boot first up like I always was used to till the last few months... David Elmo -- 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/> iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com
