So I was browsing github earlier today, I noticed someone had a fork of rockbox on their github. I checked it out and noticed an app called infoNES. I thought, "That's strange, I thought rockbox didn't have an nes emulator." I downloaded the entire repository, but it refused to compile. Eventually I decided to grab the latest rockbox version and add infoNES to the latest version myself. I compiled it and to my surprise, a working NES emulator was the result.
Note to whoever wants to compile it themselves: I couldn't get the .rock to play on the version I got off of the official installer (Which confuses me because I compiled the latest version's source code). After copying the entire new .rockbox folder, it worked.
Here's some proof of it working:
Here's a link to the github page that has infoNES:https://github.com/theunamedguy/rockbox
The devs at rockbox should implement this into the main installer, so everyone can get this without compiling it themselves.
For anyone who wants instructions on how to get/do this, shoot me a PM or wait until someone adds this to rockbox.
I tested this on a new Sansa Clip Zip, and I can try it on an iPod 5g if necessary.
EDIT: I realise now he has a profile here.http://forums.rockbox.org/index.php?action=profile;u=60045