Modded by Tzk on hardwareluxx.de & HWbot.org forums in Feb.2021
Huge thanks to pinczakko, tictac and polygon of rebelshaven forums
digitalbath on HWLuxx and Infrared on HWBot

!!! I TAKE NO RESPONSIBILITY FOR ANY DAMAGE THIS BIOS CAUSES !!!
!!! USE AT YOUR OWN RISK                                     !!!
!!! THIS BIOS IS UNTESTED. MAKE SURE YOU GOT A BACKUP PLAN IN CASE YOU BRICK YOUR BOARD !!!

7dpxdwp-FIX.f6:

This bios sets PCI configuration register to fix bluescreens when using newer ATI cards like X800 or HD3850.
This is done through an additional ISA option ROM integrated into the bios. 
If you want to make adjustments yourself, use FlatAssembler (FASMW) to compile the option rom source.

The fix was made according to some Linux kernel fixes (in quirks.c) and sets the following register:

B0:D0:F0:4Ch -> bit 1 and 2 to 1b
B0:D0:F0:84h -> bit 23 to 1b and bit 3 to 0b

4C bit 1: PCI_OR_EN | If 1, enable PCI Ordering Rules Compliance
4C bit 2: PCI_DT_En | If 1, enable Delayed Transactions

84 bit 23: Tgt_Latency | If 1, enable PCI Maximum Target Latency Rule. Bit 3 must be zero when 23 = 1.
84 bit 3: Target latency timer disable | If 1, disable AMD-762 system controller target latency timer on AGP and PCI

