YES, it is Rommie! Thanks!
The file on the site you linked to is corrupt but I found another one. Interesting is that it only seems to be able to do to the ROM that it has dumped from the Mac it's running on. You can't feed it a ROM file from somewhere else.
My intention was to find the easter egg image stored in the IIci ROM. Maybe I'll just have to dig out a real IIci and run it on there.