Note to Lord Nightmare: all of the known-to-exist IIgs "Mark Twain" prototypes (the rumored "ROM 04" machines) had standard ROM 03 ROMs (yes someone dumped it and did a binary compare). The differences were purely hardware: more RAM and an on-board SCSI interface.
Ok, i'll fix that comment/label when i convert 2gs to use the bios system. the number comes from a list of apple2 roms including several prototypes which are not dumped. i have no idea what that rom is supposed to be then.
"When life gives you zombies... *CHA-CHIK!* ...you make zombie-ade!"