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From: dlm@iheds.UUCP (Daryl Monge)
Newsgroups: net.micro.atari
Subject: Re: Unix without an MMU
Message-ID: <481@iheds.UUCP>
Date: Mon, 6-Jan-86 10:27:33 EST
Article-I.D.: iheds.481
Posted: Mon Jan  6 10:27:33 1986
Date-Received: Tue, 7-Jan-86 04:22:43 EST
References: <12173015456.10.MRC@PANDA>
Organization: AT&T Bell Laboratories
Lines: 21

> If you have multiple processes running in a non-memory managed
> system, you are restricted to one of the following:
>  . each process absolute-assembled into a different partition of
>    memory (ala DEC RSX-11)

Not altogether true.  If you process activator can handle relocation
information in an executable file, you can have multiple processes without
memory management.  I see no reason why UNIX would not run.

Still, I agree with the opinion that it is much preferable to run with
an MMU for protection.  It is cheaper to add an MMU than to spend alot
of development time getting around its ommision.

Rumor has it that the TT is the correction for this.


Daryl Monge
AT&T
Bell Labs, Naperville, Ill

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