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.

Release notes:

This version only has one minor fix, the direct file reading to EGA VRAM has been implemented. This allows Rockford to run, and fixes the graphics corruption problems in Heimdall when talking to other characters.

Thanks to http://www.nintendomax.com/viewtopic.php?t=13304&f=19 for the news.