Date: Thu, 14 Oct 1999 11:36:52 -0700 (PDT)
From: "Steven M. Schultz" <sms@moe.2bsd.com>
Message-Id: <199910141836.LAA21478@moe.2bsd.com>
To: wilko@yedi.iaf.nl, wkt@cs.adfa.edu.au
Subject: Re: vtserver
Cc: kbd@ndx.net, pups@minnie.cs.adfa.edu.au
Sender: owner-pups@minnie.cs.adfa.edu.au
Precedence: bulk

Hi -

> From: Wilko Bulte <wilko@yedi.iaf.nl>

	I will be doing some more research on this when I get home from
	work tonight.

> I once had Ultrix-11 3.1 running on a dual RK05 11/34. What I'd call a
> very minimal system ;-) But it ran

	That is because DEC put the extra effort into supporting non-split I/D
	machines.  The "stock" V7 really wanted a 11/70.  In fact there was a
	chapter in the back of one of the manuals/books detailing what it took
	to get V7 running on an 11/40 (it was a non-trivial project).

	Several things conspire against V7 and later on 11/34 (or 35, 40, 60,
	etc).  The two most notable ones are the limited address space,  
	everything (drivers, data structures, general kernel code) must fit 
	in 56kb instead of 120kb - (8kb reserved for the I/O page) and lack 
	of instruction restart on MMU faults.

	I'll take a look at the V7 layout later but my memory is that it
	wanted an 11/70.

	Steven Schultz