I got a few requests for a BerryBoot image of PiMAME. I followed the instructions and generated an image that should be compatible. I haven’t had a chance to test it yet since I don’t have a Pi with BerryBoot installed.
You can get the image here: http://sheasilverman.com/rpi/pimame-0.7.6-berryboot.img
This is version 0.7.6.
Please let me know how it works!