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Motherboard schematic
Posted: Tue Jun 21, 2011 10:55 am
by logicman112
Is it possible to write BIOS code which controls all the hardware components of a motherboard without having the schematic of that motherboard?
Re: Motherboard schematic
Posted: Wed Jun 22, 2011 6:39 pm
by edwin
Nope, otherwise there would be one universal bios for all boards.
Re: Motherboard schematic
Posted: Wed Jun 22, 2011 8:27 pm
by cp
well, the answer isn't a simple yes or no.
if you still have the board up and running with its original bios, you can extract a lot of information from the running board without having access the the actual schematics. to the extend a lot of manufacturers used the chipset maker's advice on motherboard layout. so infact a lot of boards have a very very similar design. however they vary very much in details.
anyway: go and check
coreboot. there you'll find plenty of sourcecode for initializing motherboard components (and ways to configure it to make it work despite those differences).
