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From: mike@blia.BLI.COM (Mike Ubell)
Newsgroups: comp.unix.wizards
Subject: Re: Squeezing more memory into a process on a pdp 11/73 - HELP !
Message-ID: <1416@blia.BLI.COM>
Date: Tue, 6-Jan-87 16:06:24 EST
Article-I.D.: blia.1416
Posted: Tue Jan  6 16:06:24 1987
Date-Received: Wed, 7-Jan-87 22:35:45 EST
References: <1116@natmlab.dms.oz>
Organization: Britton Lee, Los Gatos, CA
Lines: 10
Keywords: memory pdp 11/73 help fruit orange
Summary: V7 Unix almost supports text overlays this may help extend your process space, but if you are looking for more data space, sorry.

In article <1116@natmlab.dms.oz>, theo@natmlab.dms.oz (Theo ten Brummelaar) writes:
> .....I am doing a fair amount
> of image processing work and would dearly love to know a way
> to squeeze more memory into a single process (I have 1.5M all together).
> 

V7 (PDP11) Unix had some support for process text overlays.  Of course
none of it was documented and we were unable to determine the intentions
of ld and had to rewrite it for our needs.  As I recall we had to modify
adb and put a hook or two in the kernel to debug the stuff nicely.