UNIX V6.TAPE
alejandro gonzalez
agonza24 at cs.fiu.edu
Fri Jan 22 03:14:02 AEST 1999
Thanks a lot. It works now.
*********************************
Alejandro Gonzalez
HPDRC Research Assistant
NASA Regional Application Center
agonza24 at cs.fiu.edu
*********************************
On 21 Jan 1999, Tom Ivar Helbekkmo wrote:
> alejandro gonzalez <agonza24 at 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"
>
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