[lkml]   [2007]   [Feb]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    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.

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2007-02-19 01:29    [W:0.022 / U:21.268 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site