Yoshihiro has released a new beta of his Nintendo DS emulator that runs on the Sony PSP.

Changes:

Removed vertical screen mode but I’ve added the screen swap.
Added language support now working.
GU support added.
Very nice speed up; now many games are really playable.
Fixed when nds games freeze your psp.
Source code added for psp; still not cleaned

Thanks to http://www.tehskeen.com/forums/showthread.php?threadid=13690 for the news.

http://www.pspgen.com/forums/dsonpsp-beta-5-by-yoshihiro-t179060.html