Atari800 is an emulator for the 800, 800XL, 130XE and 5200 models of the Atari personal computer.
It can be used on console, FrameBuffer or X11.
See http://atari800.sourceforge.net/ for further informations.
Wiz-ATARI is a port of the PSP version to GP2X Wiz.
Many new features have been added such as cheat codes and save states with thumbnail images etc ...
How to use it ? Everything is in the README.txt file.
Sources are included, and this package is under the GNU public license,
read COPYING.txt file for more information about it.