I was reading another forum and I found this http://www.assemblergames.com/forums/showthread.php?52419-Saturn-CD-Block-ROM-dumped which indicates that someone has been able to dump the internal ROM from the SH-1 of the Sega Saturn. Last I heard, this was something sent for decapping but wasn't decapped (forget if it was problems getting the data out or if it just didn't get done before the decapping work stopped).
Does this dump mean decapping is no longer necessary for the Saturn chips? (and if so how come its not in MESS?)