forums.ps2dev.org

I have the 1G stick of these, and it works great, with the adapter i can use the duo in all my Sony digital cameras , my PC's and in my Sony TV wich all have a Memorystick slot but doest have a memorystick duo slot.

so it is a must have :D

I dont know much about Developement, I googled for some PSP SDK and found this ;)

http://www.metrowerks.com/MW/Develop/Games/PSP.htm

And

http://www.snsys.com/PSP/ProView-LE.htm