Joat has added more information to his homebrew Nintendo DS(TM) technical reference. Changes/Additions:

I’ve added some information on the Wireless MultiBoot protocol, wireless basics, and packet capture formats. The Timers page has also been updated with some introductory information. Chishm has put up some information on how to displaythings on the screen borders in GBA Mode. Various other small additions, corrections, and tweaks.

http://www.bottledlight.com/ds/