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From: peter@sugar.UUCP (Peter da Silva)
Newsgroups: comp.arch,comp.unix.wizards,comp.os.misc
Subject: Re: Shared libraries (Was: Re: Big Programs Hurt Performance)
Message-ID: <881@sugar.UUCP>
Date: Fri, 16-Oct-87 06:48:06 EDT
Article-I.D.: sugar.881
Posted: Fri Oct 16 06:48:06 1987
Date-Received: Sun, 18-Oct-87 03:07:32 EDT
References: <8714@utzoo.UUCP> <286@usl> <73@usl-pc.UUCP>
Organization: Sugar Land UNIX - Houston, TX
Lines: 12
Summary: But...
Xref: mnetor comp.arch:2659 comp.unix.wizards:4955 comp.os.misc:301

> DEC machines of PDP design included versions that did not include
> MMUs. ...  UNIX ran on these machines. ...  It had features between V6
> and V7 and the only real stripping of the OS was the removal of account
> "groups" (/etc/group, newgrp, chgrp, etc.).

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).
-- 
-- Peter da Silva  `-_-'  ...!hoptoad!academ!uhnix1!sugar!peter
-- Disclaimer: These U aren't mere opinions... these are *values*.