via http://www.emucr.com/

nullDC-Naomi SVN r141 is compiled. nullDC-Naomi is an open source NAOMI Arcade System Emulator. It will NOT run Dreamcast games.

nullDC-Naomi SVN Changelog:
r141
Missing return statement in ioctl code !
Fix issue 432 (thanks for reporting !)

http://www.mediafire.com/?64ok9ikzij5koiz