Date: Thu, 21 Jan 1999 12:14:02 -0500 (EST)
From: alejandro gonzalez <agonza24@cs.fiu.edu>
To: Tom Ivar Helbekkmo <tih@Hamartun.Priv.NO>
cc: wkt@cs.adfa.oz.au, pups@minnie.cs.adfa.oz.au
Subject: Re: UNIX V6.TAPE
In-Reply-To: <8667a1ci6r.fsf@barsoom.Hamartun.Priv.NO>
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Thanks a lot. It works now.



*********************************
Alejandro Gonzalez
HPDRC Research Assistant
NASA Regional Application Center
agonza24@cs.fiu.edu
*********************************

On 21 Jan 1999, Tom Ivar Helbekkmo wrote:

> alejandro gonzalez <agonza24@cs.fiu.edu> writes:
> 
> > I have been following these instructions, the problem comes up when
> > I get the '=' prompt. I type: "tmrk", it just freezes.
> 
> You're following the wrong instructions.  :-)  Or, at least, you're
> taking them too literally.  You're trying to use the tape the way it
> would be done on a real machine, but it's much easier to just split it
> into disk images under the host UNIX.  Looking in my V6 directory,
> I've got a text file containing something that I believe Warren wrote,
> in a text file accompanying the tape image:
> 
> "This is a copy of the Sixth Edition distribution tape which was sent
> to me by Ken Wellsch. The file v6.tape.gz is the tape image, with the
> first 100 512-byte tape blocks containing tape bootstrap stuff. Blocks
> 100 - 4099 are the RK05 root image, blocks 4100 - 8099 are the /usr
> RK05 image, and the blocks 8100 - 12099 are the /doc RK05 image."
> 
> So what I did with that tape, for Bob Supnik's PDP-11 simulator, was
> to run these commands under the host UNIX:
> 
> 	% gunzip v6.tape.gz
> 	% dd if=v6.tape of=v6.root.rk05 count=4000 skip=100
> 	% dd if=v6.tape of=v6.usr.rk05 count=4000 skip=4100
> 	% dd if=v6.tape of=v6.doc.rk05 count=4000 skip=8100
> 
> Then, I made a script file for the simulator:
> 
> 	% cat > v6.script
> 	attach rk0 V6.root.rk05
> 	attach rk1 V6.usr.rk05
> 	attach rk2 V6.doc.rk05
> 	boot rk0
> 	^d
> 	%
> 
> ...and finally, I run the resulting system, thus:
> 
> 	% pdp11 v6.script
> 	PDP-11 simulator V2.3
> 	@unix
> 	login:
> 
> I may have had to modify something in the actual UNIX V6 system to
> mount rk1 and rk2 properly -- I don't recall.  You'll figure it out.
> 
> Anyway, the system runs like a charm, and I've successfully rebuilt
> the kernel from sources on it.  Fun!
> 
> Good luck!
> 
> -tih
> -- 
> Popularity is the hallmark of mediocrity.  --Niles Crane, "Frasier"
>