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:Google for Ralf Brown's Interrupt List.Jean Delvare wrote:Still, the information printed by hwinfo is correct, I've tested itOn x86, the BIOS led state can be read from byte 0x97 the BIOS RAM. ThePerhaps that's what Suse does, but the proper address is 0x417.
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.
0x497 is the rarely-used LPT2 timeout counter.
myself. Is there some publicly available documentation about the x86
BIOS RAM mapping?
I didn't find the BIOS data areas/tables in Ralph's web pages...