It seems that someone has been able to hook an IDE harddrive and ISA
Ethernet controller to the DC.  They even have the Serial port, Parrell
port, and CD-ROM port (Don't ask what the CD-ROM port is, I don't know)
PIN-OUTs.

AND for you X-Windows programmers, it seems he has some registers from
the Power-VR chip.

Here is the site:

http://members.nbci.com/_bitmaster_/dc-index.html