OK, I downloaded linuxbios but I dont have a supported board/chipset (an older acer aspire with an ALI chipset). And of course, acerlabs makes it a policy not to give away their specs.
But there still might be hope. Award bios's exist for other boards with the same chipset (take a look at http://www.wimsbios.com/index.htm?/numbers.shtml for a cross reference).
I got one of those bios files and loaded it in awdbedit. awdbedit lists the chipset registers, or so it seems (click Recognized Items->System BIOS->"Chipset Registers" tab, as well as the "Setup Menu" tab.) Could that be enough info to get a board up and running? The tables look kinda raw, ie no distinction between northbridge/southbdride etc. The "Setup Menu" tab gives a little more detialed description for some registers. Are there any chipset experts out there who could comment on this?