Rich Alderson wrote:
I don't believe that Mac OS shared any code with
the Lisa.
Bill Atkinson wrote QuickDraw (originally named LisaGraf) in Pascal on
the Lisa, then rewrote it in assembly. The assembly version was used on
the Mac. My vague recollection is that the assembly version also got
used on the Lisa, but I could be wrong about that. If so, it's probably
the only shared code. (Not counting MacWorks.)
Eric