BramBram (DS-GPS) v1.3 (NDS Application)

Turn your NintendoDS into a GPS device…

Note: The actual download page at http://nds.zoelen.net/ seems to be broken at the moment.

http://blog.dev-scene.com/ashairey/category/ds-gps/

This article is over 2 years old — the linked page may have changed, moved, or been taken over since then.