Quote Originally Posted by Zucker2k View Post
Couldn't a simple side by side comparison expose the differences between x48 DDr3 (RE) and x48 DDR2 (RF)? Maybe you're looking to go beyond a simple compariosn and replacing instructions/codes/registers that work with DDR3/components in the RE with the less sophisticated RF, you're actually looking to program your own stuff in, and may be tweak performance? I think the RE bios on a RF would be a blast enough.
Unfortunately can't use X48 DDR3 core bios code on X48 DDR2, they are very different with respect to skewing, ordering, strobe timing, and all that. Best I can do is disassemble both side by side and integrate functionality if possible, otherwise try and understand what the instructions are doing ans make them do it another way that works with the differences between the DDR2 and DDR3 memory controller.

I have no doubts that some things will carry between both bios' of the Formula and Extreme and I'm sure if I spend enough time understanding how Asus writes certain bios functions it can be easily done. Thankfully AMI 8.0 core hasn't changed much over the years, so the information available is still correct enough to figure out the minor changes pretty fast.

I've already figured out the 1B module segment pointers for cpu and nb clock skew, also made sense of the static menu arrays for the bios options, wellnearly all i've got that structure but 2bytes unknown right now.