http://www.consolevision.com/members.../tut_reset.htm

Random Dreamcast Resetting Fix, with pictures.
I just did it to mine, and it appears to have done the trick.



http://www.consolevision.com/members...trollerfix.htm

From the same site- controller board resistor fix. Looks a bit trickier than the reset fix, but probably worth it to play soul calibur again

Looks pretty reliable, even if the username is odd (to say the least).