Allow old Diablo II versions to work with new MPQ files from the D2 Blizzard Installer

[FearedBliss]

Code: Select all

This change allows you to play old Diablo II versions between 1.08 and 1.13d using
the new Blizzard MPQ files that are provided in the 1.12+ installer.

Instructions
--------------
1. Search for pattern "68 83 00 10 85"
2. Find the reference where there is a JNE above that line and where that block is surrounded by a call to Ordinal's 552 and 461.
3. Change that JNE to a JMP.

Note: Versions 1.07 and below and 1.14 and above automatically work with the new installer. This is for 1.08 to 1.13d.
1.07 and below are not affected by the new installer. Only 1.08 -> 1.13d.

Offsets
------------
1.13d = 2D591
1.10f = 15B9B
1.10[bs] = 15AFB
1.08 & 1.09b = 1674B

For a more technical description of what happened, please read the following post or watch the video:

https://www.diabloii.net/forums/threads ... st-8827207

[devurandom]

Good Find
Thanks!