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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.

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