Yabause

Yabause (Yet Another Buggy And Uncomplete Saturn Emulator / Yet Another Beautiful And Under-rated Saturn Emulator) is a Sega Saturn emulator under GNU GPL. It currently runs on FreeBSD, GNU/Linux, Mac OS X, Windows, Dreamcast, PSP and Wii.

Yabause support booting games using Saturn cds or iso files.

System requirements: 

sometimes a BIOS