Bero has updated his site with this news concerning his ports of Quake 2 etc to the Dreamcast Console:

fix Compatibility update script. everyone can post now.
upload prebuild gcc-3.1.1 and binutils-2.12 for cygwin enviroment. files area
upload Quake and Quake II PC demo version.

Check his sourceforge site out at this address http://dcquake.sourceforge.net/