2600.emu is an Atari VCS emulator emulator written in C++. It uses the emulation backend from Stella and is built on top of the Imagine engine. The source is released under the GPLv3 license. Ported to Pandora by Rakashazi. This one is NOT the port made by ptitSeb.

http://repo.openpandora.org/?page=detail&app=com.explusalpha.A2600Emu