IIsi ROM SIM gives death chime in my SE/30s — #3 porter: The reason why he put the IIsi ROM into the SE/30 is because the IIsi ROM is 32 bit clean, whereas the SE/30 ROM is not. Without a IIsi or IIfx ROM, an SE/30 requires MODE3… 68kMLA Hardware by LCGuy Wed, 15 Jul 2009 - 11:00