>The claim I have heard is that there is a a CPU instruction to turn off the
> serial number, but not one to turn
>it on. Ie, the only way to turn it on again is to reset the processor (which
> means you have to
>reboot the system). Thus, once the bios has turned it off, it is off for the
> remainder of
>that bootup no matter what any program does
Thank you - that's more information than I'd been given in the past on this
particular issue. Knowing how chip builders like to create orthogonal
instruction sets, I assumed that if there was a command to turn the option
off, there would be a similar command to turn it on - and you know what they
say about "assume" :-)
Quote:>(Note that I have not studied the 686 instruction set to verify this.
Obviously, there's always the chance that such a feature is there, but
undocumented, unless you get to go through the design of the chip and ensure
that there is no path other than resetting the chip that could cause it to
enable the sending of the ID. However, I'd say that's pretty unlikely, and if
such an issue were to be discovered, would be publicised pretty widely.
[Note that answers to questions in newsgroups are not generally
invitations to contact me personally for help in the future.]
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