According to Nas-Central it has a RDC R3210 CPU. I’ve never heard of that one before. It is compatible to the i486 instruction set. So you should be able to compile stuff for it, if you’ve got the right deps.
Did you setup this firmware mentioned here: http://www.linksysinfo.org/forums/showthread.php?t=57066 ??
What else can you say about the device – I’m currently looking for something to supersede my slug.