is my port of the SNES9X Super Nintendo emulator to the BeagleBoard-xM and BeagleBone Black ARM SBCs. My goal is to turn these boards into a stand-alone appliance/console, so there is quite a bit more to it than just the emulator itself. While the RPi has its share of emulators, the extra processing power of the BBB target really brings some of the old SNES games to life in a way that the RPi can't manage.
I've been developing this software for over a year now, and the latest version has added in GPIO input support on the BBB target so that you can use the BeagleSNES to develop your own handheld game consoles or custom controllers. The prebuilt images of BeagleSNES are 4GB images that can be copied onto a microSD card. Flash the prebuilt image to the microSD and you're ready to get started. Source code for the bootloader, kernel, and emulator/GUI are all available for download, and there is also a (pretty detailed) manual that describes how to set the system up and how all the parts and pieces of it work.