Some links to help get you start coding for the DC:
-Installing the Cygwin Environment
-DC Programming Tutorial for Newbs
-BlueCrab's Development Build Script (KOS 1.2.0)
-Ragnorak's Development Subversion Build Script (KOS 1.2.x, 1.3.x)
-BlackAura's Build Script (KOS 1.2.0)
-BlackAura's Tutorials (2D Graphic)
-Developing For DC Using Dev-C++
-DCKnowledgeBase++
-Making a DCDev Environment by Dee Roc
-Dreamcast Programming by Marcus Comstedt
-DC Freedev by Propeller
-Writting software for the DC using free tools by atani
-DC Development ISO
Thanks to providing links:
Storminator16, Dr._Zoidberg, speud, BlackAura, Propeller
if you know of any more usefull links please post them hear and i will add them to the list