We have a video for our Palm Pre fans today that shows a version of psx4all running on the Palm Pre with Game Boy Advance and the TurboGrafx-16.
The hacker comments that performance on the Palm Pre is actually better than on the iPhone 3GS, and he also hacked access to the keyboard to enable proper game controls.
Obviously there are still a few kinks and bugs being worked out, but this could well lead to big things with Palm pre gaming in the future. So, hit up the extremely short video below and enjoy.