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From: guy%gorodish@Sun.COM (Guy Harris)
Newsgroups: comp.arch,comp.unix.wizards,comp.os.misc
Subject: Re: "fork" with no MMU (was Re: Shared libraries (Was: ...)
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Date: Sat, 17-Oct-87 16:22:24 EDT
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Posted: Sat Oct 17 16:22:24 1987
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> So tell me... how did they implement fork() without an MMU? Did they do
> addres fixups on running code, or did they require all code be relocatable
> (not an unreasonable request on the PDP-11, by the way, and one place where
> the 11 has the 68000 beat hollow).

Neither.  They only kept one process in memory at a time, using swapping to do
context switches.
	Guy Harris
	{ihnp4, decvax, seismo, decwrl, ...}!sun!guy
	guy@sun.com