The BIOS is not the only difference.

http://en.wikipedia....PS_architecture
QUOTE(uberfry @ Aug 21 2005, 04:57 PM)
wtf? MIPS? lol²
I guess no one remembers, but Nintendo named the Mario 64 rabbit "Mips" as a joke:
"Development started by creating the characters and the camera. The first test scenario used to try out controls and physics involved Mario and the rabbit Mips, named for the MIPS processor in the Nintendo 64."
From http://en.wikipedia..../Super_Mario_64
In case you ever get asked on Jeopardy, ha ha.