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...
---
~Randy
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