This repository is dedicated to Xbox 360 patches (PowerPC VMX128 instructions)
- Rainbow Six Vegas (rainbow_six_vegas.s)
- Rainbow Six Vegas 2 (rainbow_six_vegas_2.s)
The patches contain most comments I could work out, mostly just for research.
Checkout this document for some of the basic instructions : http://www.ds.ewi.tudelft.nl/vakken/in1006/instruction-set/
You will need XePatcher, you can grab it from my here : https://www.staticpi.net/?page_id=16
To apply patches simply follow the readme.