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.
What hardware it emulates?
Currently DSx86 emulates the following:
* 80186 processor (which is actually a 80286 processor without the protected mode stuff)
* MCGA graphics adapter (a stripped-down VGA with a maximum resolution of 320x200)
* SoundBlaster (including AdLib-compatible FM sounds) sound card
* 83-key US keyboard
Dec 29th, 2009 - v0.01 Alpha Released!
Well, somewhat surprisingly, I found the nastiest bugs in the code yesterday, and now DSx86 seems to be running reasonably well so that I dare release the first alpha version. Please note that it still is very much work-in-progress, so don't expect it to work properly all the time (or even most of the time).
You need to have 4DOS as a command shell, without that you can't do anything with DSx86.