Here is my first program for Nintendo DS. Guess what ? It's a PandaForth port, featuring a virtual keyboard.
All the work has been done using the Dualis emulator, but hasn't been tested on hardware yet.
PF4NDS
Download it here. Full source code provided.

EDIT : Unfortunately, it does NOT work on hardware... Well, when I'll get my PassMe, I'll be able to fix it. I would like to thank Darkain, that spent some time helping me with debugging. I think I'm now very close to a working version.