Hi All, Apologies in advance for my naivety. I am starting out with a build for an ASUS M2N-SLI Deluxe board. This uses the nForce MCP55 chipset, with a supported southbridge and LPC flash chip for the BIOS. Original product specifications can be found here: http://www.asus.com.au/product.aspx?P_ID=szSFtrap7crpBaQE
First, I am wondering how to go about adding a backup flash chip to this board. I don't wish to remove the whole flash chip if I don't need to. I was thinking of attaching a device and simply de-soldering the OE pin of the original chip.
Secondly, what tables change between motherboards that I would need to identify? I gather that the memory map and the PIRQ information changes, but I'm not sure what else does.
I have ordered a port 80 debug card, and I have a machine I can use for serial console monitoring of the BIOS. Any help beyond the developers manual is appreciated.
Thank you, Michael Cassaniti