"Mike O'Brien" <obrien@rushe.aero.org> writes:
> 	The first version of UNIX ran on a PDP-11/20, which did
> not have an MMU.

It had segments, so it had memory management, although no memory
protection per se.

--
Perry E. Metzger		perry@wasabisystems.com
--
NetBSD: The right OS for your embedded design. http://www.wasabisystems.com/