Messages in this thread | | | Date | Fri, 16 May 2008 17:22:07 +0200 | From | Michelle Konzack <> | Subject | Re: Hardware designt to prevent Damages... [WAS: [patch 23/37] i2c-piix4: Blacklist two mainboards] |
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Hello Jean,
Thank you for explanation.
OK, if I understand I2C right, there are more or less reserved addresses for each type of chip if I understand it right, but I have only an incomplete list of it. (gotten from the NXP website where the Tech- Support is very helpful. Same for Dallas/Maxim)
Do you know, where I can get a full list of it?
Thanks, Greetings and nice Day Michelle Konzack Tamay Dogan Network Debian GNU/Linux Consultant
Am 2008-05-15 20:49:55, schrieb Jean Delvare: > In this particular case, the CPU was apparently damaged as the result > of accidental memory over-voltage. It is worth noting though that said > CPU had gone through intensive overclocking session beforehand, and > this might explain the death. Other CPUs are known to have gone through > the same experience and are still working. > > So, to clear up any misunderstanding: the CPU damage did not occur > because we used some odd CPU instruction sequence or anything like > that. The damage came to the CPU from other hardware on the board. > > To be a bit more technical, the design mistake (I think) that was made > by the designers of the motherboard in question, was to use an > I2C/SMBus chip on a PC motherboard, which uses SMBus receive byte and > SMBus send byte for control, and which lives at an I2C address which is > very common amongst hardware monitoring chip. The 4th factor being, of > course, that improperly programming the chip in question can result in > hardware damage. If only 3 of these 4 factors had been present, most > probably there would have been no issue in practice. But with all 4 > factors, bad things just had to happen. And it's not just Linux, users > had similar problems running hardware monitoring tools under Windows > too. ------------------------ END OF REPLIED MESSAGE ------------------------
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