Obsolete Documentation
http://demo.tudos.org/dsweeper_tutorial.html
Why device drivers in user space; different possibilities for getting device drivers; DDE's origins and rationale.
http://wiki.tudos.org/DDE/DDEKit, http://os.inf.tu-dresden.de/pipermail/l4-hackers/2009/004291.html
Structural overview of the components.
Discussion
DDE essentially is a glue layer to embed Linux device drivers into another environement. In the DDE case, this other environment is a user-space task -- compared to the GNU Mach kernel having a in-kernel Linux 2.0 device drivers glue code (cf. paper by Goel et al.).