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    SubjectRe: Linus' laptop and Num lock status
    Randy Dunlap wrote:
    > On Sun, 18 Feb 2007 09:32:15 -0800 H. Peter Anvin wrote:
    >
    >> Jean Delvare wrote:
    >>> On Thu, 15 Feb 2007 06:34:35 -0800, H. Peter Anvin wrote:
    >>>> Jean Delvare wrote:
    >>>>> On x86, the BIOS led state can be read from byte 0x97 the BIOS RAM. The
    >>>>> BIOS RAM is mapped at 0x400 so all we need to do is to one byte from
    >>>>> RAM (offset 0x497). This is how Suse's hwinfo does.
    >>>> Perhaps that's what Suse does, but the proper address is 0x417.
    >>>>
    >>>> 0x497 is the rarely-used LPT2 timeout counter.
    >>> Still, the information printed by hwinfo is correct, I've tested it
    >>> myself. Is there some publicly available documentation about the x86
    >>> BIOS RAM mapping?
    >>>
    >> Google for Ralf Brown's Interrupt List.
    >
    > (Ralph)
    >
    > I didn't find the BIOS data areas/tables in Ralph's web pages...
    >

    It's called memory.lst in the Interrupt List.

    -hpa
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