For 504 BIOS,

Added N/2 divider, I checked with my 8400ES, it works
400Strap added, it works and I boot into windows, but I want opening memset, but bluescreen
CPU voltage damper becomes Loadline calibration, still works
ram timings summary showing on top looks like P5E series style

now blending with 500X8.5, DDR1200 CL5-5-5-9, seems still work good!!!

need to push it more higher to see it would still be good!?