What is "Update CPU microcode" about??

Discussion in 'Asus' started by Ben Miller, Jul 26, 2003.

  1. Ben Miller

    Ben Miller Guest

    I've come accross this in new bios releases' version history Read Me's
    from ASUS recently:

    "Update CPU microcode"

    What is this supposed to mean? Does it pertain to the microcode in a
    Pentium for e.g.?? (Didn't know a cpu microcode was anything but
    circuit-coded!! - then again, I did my processor architecture courses
    back in the '80s... :-( ).

    Ben Miller, Jul 26, 2003
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  2. Pentium Pro and later Intel CPUs have uploadable microcode. When a new
    processor (stepping) is released, the BIOS needs to be updated in order
    to have the necessary microcode patches (which can contain workarounds
    for errata and the like). On a side note, Windows 2000 and later M$
    operating systems have a microcode update device that loads the
    microcode if not done by the BIOS.

    Stephan Grossklass, Jul 26, 2003
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  3. Given that the microcode must be re-uploaded on each bootup, I'd say
    volatile. You may be able to find something at developer.intel.com.

    Stephan Grossklass, Jul 27, 2003
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