Based on beta bios 1012 for ASUS P4P800 SE. 
Modded by digitalbath on hardwareluxx.de forums in Jun.2021
Huge thanks to Antinomy on HWBot!

!!! THIS BIOS IS UNTESTED, PRECEED WITH CAUTION              !!!
!!! I TAKE NO RESPONSIBILITY FOR ANY DAMAGE THIS BIOS CAUSES !!!
!!! USE AT YOUR OWN RISK                                     !!!

changes made:

unlocked hidden and unlinked options:
* other FSB/Memory Ratio (made by ASUS!)
* CPU B.I.S.T. (???)
* Write to Read Command Delay
* Write Recovery Time
* Write-Read Command Spacing
* Read-Write Command Spacing
* Read Delay
* Dual Channel Organization (Tiled / Linear)
* DRAM Command Per Clock
* ICH DCB Enable (???)
* other options caused BIOS errors

* seperate DRAM menu
* changed defaults: MPS Revision to 1.4 and Full Screen Logo to disabled
