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.
PSPATARI is a port on PSP of the version 2.0.2 (April 08 2006) of Atari800 from Petr Stehlik.
GP2X-Atari is a port on GP2X of the PSP version 1.0.7.
How to use it ? Everything is in the README.txt file.
This is the first version but should be the last version (only if major bugs are found).
You can download it on my blog http://zx81.zx81.free.fr or on http://archive.gp2x.de