DSx86 v0.21 Beta is released. DSx86 is a PC emulator for Nintendo DS. It's purpose is to allow you to run old DOS games on your Nintendo DS game console.

DSx86 v0.21 Beta Changelog:
This is a fix version, after the somewhat buggy version 0.20. Most games
that did not work in 0.20 (but worked in prior versions) should now run
again, and this version also runs Windows 3.0. The D-Pad mouse behaviour
was changed to scroll the screen when near screen border. The internal
refactoring continues, which has made this version somewhat slower than
the previous version.

Download: DSx86.nds
Download: DSx86.ini
Download: DSx86_LW2.nds
Source:Here