Originally Posted by Photon
Fred: Of course it wasn't? I'm pretty sure before that, the Xerox Palo Alto had multitasking. And before that, probably some dodgy IBM mainframe had something like multitasking serving multiple terminals and print jobs. (But no WIMP though. The Alto was first with that.)
I am not sayng the Lisa was first, only that the Amiga was not. Though Amiga scored first in the pre-emptive arena. I believe the OS Xerox used was called SmallTalk.