DSx86 is a PC/DOS emulator for Nintendo DS written by Patrick Aalto. It’s purpose is to allow you to run old DOS games on your Nintendo DS game console. Some of the older games run quite good and bring back memories.
* Improved “Jitter” mode screen scaling quality, courtesy of “sverx”.
Thanks to http://www.nintendomax.com/viewtopic.php?t=14002&f=19 for the news.