Re: Linus' laptop and Num lock status

[H. Peter Anvin]

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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