Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!unisoft!peritek!dig
From: dig@peritek.UUCP (Dave Gotwisner)
Newsgroups: comp.misc
Subject: Re: vi-like
Message-ID: <577@peritek.UUCP>
Date: 25 Mar 89 07:26:50 GMT
References: <12406@dartvax.Dartmouth.EDU> <958@starfish.Convergent.COM> <302@scr1.UUCP>
Organization: Peritek Corp., Oakland, CA
Lines: 23

In article <302@scr1.UUCP>, pechter@scr1.UUCP writes:
> In article <560@peritek.UUCP> dig@peritek.UUCP writes:
> 
> < Description of v6 Unix and early vi cut here>
> >restricted originally to 64K for code+data 'cause it also originally ran on
> >non-separate I/D machines), even EDT on the 11 uses overlays.
> 
> Well Ked (kind of the father of EDT) runs on my PDT11/150 with only 62kb of
> memory available for the o/s and all tasks.

There may only be 62Kb available, but most 11 operating systems rely VERY
heavily on disk overlays.  The versions of EDT and KED and K52 (which is a
VT-52 version of KED running on RT-11 all are overlayed.  Yes they fit in
62Kb, in fact, RT-11FB limits you to something like 40Kb (more or less,
depending upon what handlers you have loaded), and my guess is that
KED will run in less than 32KB, but it is overlayed.  UNIX did not
support overlays at the time VI was written.
-- 
------------------------------------------------------------------------------
Dave Gotwisner					UUCP:  ...!unisoft!peritek!dig
Peritek Corporation				       ...!vsi1!peritek!dig
5550 Redwood Road
Oakland, CA 94619				Phone: 1-415-531-6500