189w ago - This weekend
d2project has made available the source code for two Nintendo Wii mod-chips, namely the D2CKey and D2Pro Mod-Chip.
To quote: "This is the official open source repository for d2ckey and d2pro. VHDL, MN102 drivecode, and Gamecube configuration / update discs is hosted here.
All code is licensed under GPL v3. If you are interested in contributing to this or similar projects please contact the project owner."
Cool news indeed, and below are the related downloads, as follows:
D2Pro 5/6 Wire VHDL Source Code /
D2Pro 15/13 Wire Source Code /
D2Ckey VHDL Source Code (A3PXXX Version) /
Update/Configuration Disc Sources /
D2Pro Drivecode Source v1.5 (MN102 Assembler)
now u cant use jailbreak key dongle , and plz change the eboot and param iso file of ur all game to original eboot, after that u can play the game , b...
Might as well be here 
They are a great learning tool to better understand how the drive works.
I wished i haved a little bit more time or a good teacher.
But i think you coud put nearly every grogramm on this.
I for my self started with to study Wii Hombrew Sources.And i learned a lot from it.Still need to better inform my self about C+/C++.Than i would be able to writte the one or the other app.
wish i knew what to do with the souce code..
THX Boss i wished i haved more time to study this thingy
I have an extensive archive of mod-chip source codes since the 12c508 PSX days here... Of course if you don't collect them then it probably won't be of interest to you.