I just updated the 800 version download to fix handling of config files.

The zip file also contains an optimized config.cfg file which you can put into the ID1 directory along with pak files (if you already have your own config you dont need this).

You can get this to work with pak files on a memory card. Just put the sdlquake executable on internal memory, create a quake directory on memory card, create an ID1 subdirectory in that directory, and put config.cfg and pak files in that id1 directory. Then launch the program with a command like this :

./sdlquake -winsize 800 480 -fullscreen -basedir /media/mmc2/quake/

(substitute mmc1 for mmc2 if you chose that card... for me internal is mmc2)