Once again sun-managers proved unbeatable when it comes to supplying
the desired information.
I have arranged this summary as a digest to let people familiar with
that format have an easy access.
Subject: Xkernel [firstname.lastname@example.org]
Xkernel does what you want.
(It is a beta version, but it is as stable as 1.4)
Subject: Re: Using Sun 3/50 as X-terminals [email@example.com]
I have a lot more sun-mgrs stuff (another 600 lines) saved
on the Xkernel, but this should be the best starting point:
From: Seth Robertson <firstname.lastname@example.org>
Date: Thu, 31 Jan 91 22:49:04 -0500
Subject: help with Xkernel and xdm
Being the author of Xkernel, I am probably qualified to
help anyone who needs help with Xkernel. I'm mailing
Gary the xdm instructions which will be a part of Xkernel
v2.0 which will come out ``any day now'' :-(
(Xkernel, in case someone does not know, transforms a
Sun 3/50 (or any Sun) into a superfast X terminal by getting
rid of the overhead of a normally running system.
Xkernel instructions are available for anonymous ftp from
sol.ctr.columbia.edu A slight change is needed for SunOS
4.1.x (and you should mail me for it if you do not
get version 2.0)
Brent Chivers McLean, VA email@example.com
Subject: Re: Using Sun 3/50 as X-terminals [firstname.lastname@example.org]
Here's a list of ftp sites for Xkernel...it works quite nicely on a 3/50
archie> prog Xkernel
# matches / % database searched: 7 /100%
Host ftp.uu.net (184.108.40.206)
Last updated 07:26 16 Aug 1992
DIRECTORY rwxr-xr-x 512 Jul 29 21:14 Xkernel
Host unix.hensa.ac.uk (220.127.116.11)
Last updated 17:42 7 Aug 1992
DIRECTORY rwxr-xr-x 512 Aug 1 21:33 Xkernel
DIRECTORY rwxr-xr-x 512 Jul 22 16:24 Xkernel
Host src.doc.ic.ac.uk (18.104.22.168)
Last updated 09:48 4 Aug 1992
DIRECTORY rwxr-xr-x 512 Jun 7 00:59 Xkernel
Host sol.ctr.columbia.edu (22.214.171.124)
Last updated 05:06 3 Aug 1992
DIRECTORY rwxr-xr-x 512 Jan 27 1992 Xkernel
Host pprg.eece.unm.edu (126.96.36.199)
Last updated 14:57 31 Jul 1992
DIRECTORY rwxr-xr-x 512 Jun 21 12:54 Xkernel
Host metro.ucc.su.oz.au (188.8.131.52)
Last updated 06:18 27 Jul 1992
DIRECTORY rwxr-xr-x 512 May 6 10:34 Xkernel
Hope this helps
Subject: Re: Using Sun 3/50 as X-terminals [email@example.com]
In list.sun-managers you write:
Ask archie for "Xkernel".
But you don't really need it. Just replace the "getty" line in /etc/ttytab
for the console with one that invokes the X server.
John DiMarco firstname.lastname@example.org
Computing Disciplines Facility Systems Manager email@example.com
University of Toronto EA201B,(416)978-1928
Subject: Re: Using Sun 3/50 as X-terminals [firstname.lastname@example.org]
Here is a copy of an old message from Seth Robertson at Columbia
nynex s & t, inc
X-From: Seth Robertson <email@example.com>
X-Date: Fri, 18 Oct 91 16:24:58 EDT
The official home of Xkernel is ftp.ctr.columbia.edu in /Xkernel
If I ever get some time I will make Xkernel version 1.5 which would
contain an integrated R5 server with instructions and FAQ about it
(and about a font server)
However, since I am moving my entire department's computers to a new
building starting in December, I wouldn't hold my breath. If you want
to try the experimental R5 server (which I am using, BTW) you can get
it from the above host.
Subject: Re: Using Sun 3/50 as X-terminals [firstname.lastname@example.org]
Here is what you need.
06 Host sol.ctr.columbia.edu
Directory drwxr-xr-x 00000512 1992 Jan 27 00:00:00 GMT Xkernel
Rob Montjoy - Rob.Montjoy@UC.Edu
Computer Engineer - montjoy@ucbeh.BITNET
University of Cincinnati - email@example.com
Electrical and Computer Engineering - uunet!uceng!rmontjoy
Standards are illusions of many faces.
Subject: Re: Using Sun 3/50 as X-terminals [firstname.lastname@example.org]
Hope this helps
Xkernel turns a Sun computer into an Xterminal. Currently, the only
machine you might want to do this with is a Sun 3/50, but any computer
should receive a signifigant speedup.
The 3/50 as an Xterminal has many advantages:
1) It is blindingly fast. Quantitative measurements are not available
since the Sun clock is so bad that both before and after the Sun
was able to respond within the clock granularity. However,
qualitativly, on display instensive programs like xmaze and xtank,
a 3/50 running Xkernel was able to outperform a diskfull 4/60 when
the job was running from the same machine. The entire power of the
MC68020 is devoted to only running Xsun and doing kernel
operations. None of the normal overhead present with SunOS is
2) It saves lots of space. You only need a total of 1.7 MB (plus the
X11 font files that you would need for normal X11 operation) for
**ANY** number of machines running the Xkernel. Compaired to >> 20 MB
per normal diskless 3/50s...
WHAT DO I DO?
After you have the software, read README, README.also, THEORY, and FAQ.
Then follow the instructions in INSTALL.
All normal xterminal restrictions apply.
In case you hadn't figured it out, the computer can do NOTHING except
run the X server process.
Xkernel is Copyright (c) 1991 by Seth Robertson. All rights are
route.c is Copyright (c) 1983 Regents of the University of California.
All rights reserved.
XDM.INSTRUCTIONS is Copyright (c) 1991 by Frank Peters. All
See COPYRIGHT for more details.
Seth Robertson, email@example.com
Mark Shoulson, firstname.lastname@example.org
Xkernel is available for anonymous ftp from ftp.ctr.columbia.edu
[184.108.40.206] in /Xkernel/Xkernel.shar (/Xkernel is a symlink to the
latest version of Xkernel)
Changes from version 1.0:
Xlogin replaced with Xdm instructions (thanks to fwp1@Ra.MsState.Edu)
init replaced with a shell script (suggestion from der Mouse)
route.c source included by request for people who want to route
Xsun in a separate file to save space.
SunOS 4.1 fix (/etc/protocols)
Documentation cleaned up.
Changes from version 1.2:
Access control disabling done right
console i/o redirection fixed (thanks to email@example.com)
Documentation cleaned up more
init cleaned up and tested
Kernel messages to /dev/console turned off (See FAQ)
Changes from version 1.3:
Xdm and XDMCP explained, hopefully correctly.
Random documentation changes.
If you already have a working version of Xkernel, you do not need to
install this new version unless you really want to. The only real
improvement is Xlogin being replaced with XDM and being able to turn
off console messages.
WHAT THIS IS NOT
Do not confuse this with x-kernel, the public domain(?) protocol
testing kernel available from cs.arizona.edu
WHY DID I DO THIS?
As computers get faster and bigger, so do applications. The question
then is what do you do with the equipment you have already purchased
but is now outdated? A good example of this is the Sun 3/50. A
fairly minimal SunOS kernel and runtime configuration, requires 5 MB
of memory. Since the 3/50 is limited to 4 MB (without expensive
modifications by 3rd party vendors to allow SIMMS) one can easily see
that a problem exists. Anyone who has tried to do work on a 3/50 can
easily attest to how slow it gets, especially when you try to run
memory hogs like emacs, Sunview, X11, or Frame Maker.
So what's the solution? Well, as you might have guessed, I think one
might be Xkernel.
FOR LAZY PEOPLE
If you are feeling lazy and trustful, you can ftp
/Xkernel/4LAZY.sun3.tar.Z or /Xkernel/4LAZY.sun2.tar.Z
from sol.ctr.columbia.edu. This contains the complete
/export/root/Xkernel directory will precompiled vmunix, route, and
Xsun binaries. You will still need to modify the appropriate files
(such as hosts, fstab, etc...) though
(The sun 2 (and possibly other) versions will appear whenever I find
someone on the Internet with a working Sun 2 who can give me the
compiled versions vmunix, route, and Xsun)
Thanks go to:
Maria Barnum <firstname.lastname@example.org>
Frank Peters <fwp1@Ra.MsState.Edu>
Jean Huens <email@example.com>
der Mouse <firstname.lastname@example.org>
Scott S. Bertilson <email@example.com>
and to my other Beta testers and anyone else I forgot. (If I forgot
you, drop me a line)
Subject: Re: Using Sun 3/50 as X-terminals [firstname.lastname@example.org]
Ask archie about xkernal (xkernel) or look on sol.ctr.columbia.edu
Subject: Re: Using Sun 3/50 as X-terminals [email@example.com]
I got this one. The Xkernel can be found through
anonymous ftp, I think from ftp.uu.net and/or wuarchive.wustl.edu.
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Date: Tue, 28 Jul 92 16:32:03 BST
Subject: SUMMARY: xkernel by email
Thanks to all those who replied, particularly those who offered to email
me a copy. I eventually gave up trying to get a copy from an info-server
accepted a copy from firstname.lastname@example.org. Thank you Chris. Unfortunately I
went and deleted the shar file after unpacking it and the resultant stuff
has since been munged around by our local Xpert so as to be unforwardable
any meaningful way by me. anon ftp access instructions are in the faq.
Xkernel turns your Sun 3 into an Xterminal by doing the following:
Strip the kernel right down and strip all the unnecessary stuff from the
Replace init with a bourne script which sets up minimal devices and runs
a statically linked Xsun.
Create the swap file with mkfile -n. SunOS only uses the swapfile when it
tries to swap. xkernelling the sun keeps it skinned down enough that it
never does, thus root and swap can be mounted ro by any number of machines.
Run xdm on the server system.
The best contact for any and all info on this nifty configuration is
Seth Robertson <email@example.com>
who is the author of Xkernel.
My opinion: It is FAST. My window manager is a bit screwed up, but that is
because our local Xpert has the xdm xresources wrong. Unless you know
a lot about X, prepare to learn if you use this software. It isn't quite
plug and play. It IS worth the effort.
Alastair Young Systems Supervisor (SMTS) _ _ Ariel NH
European CAD Developments Limited aka EuCAD )/___ (_) Red Hunter
EuCAD/Cadence mail: alastair +44-31-225-3434 __/(___)_*##/c "Aspencade"
Full Email Address: firstname.lastname@example.org / /\\|| \ / \ If in doubt
9 Wemyss Place, Edinburgh, Scotland EH3 6DH \__/ ----'\__/~~~ Paint it RED
==== === ==== =======================+===========================
= = = = Gustavo Vegas email@example.com
=== = === Systems Analyst Concordia University
= = = = Dept. of E&CE Montreal, Canada
==== === ==== =======================+===========================
Subject: Re: Using Sun 3/50 as X-terminals [firstname.lastname@example.org]
----> On Tue, 18 Aug 92 12:27:25 +0200, email@example.com (Rene Jul-Hansen) said:
Rene> a while ago somebody asked for a kernel which allowed you to boot
Rene> Sun 3/50's as an ordinary X-terminal. Unfortunately I lost my
Rene> notes on that. Could somebody please repost where I could get such
Rene> a kernel.
I have a copy of version 1.4 available for ftp in
pub/X11/contrib/Xkernel.1.4.shar on mucket.vast.unsw.edu.au
Kevin Elphinstone Email: firstname.lastname@example.org
VLSI and Systems Technology Lab, Phone: +61 2 697 4897
Computer Science and Engineering, Fax: +61 2 313 7987
University of New South Wales, P.O. Box 1, Kensington 2033, Australia.
Subject: Re: Using Sun 3/50 as X-terminals [email@example.com]
>>Followup-To: firstname.lastname@example.org (Rene Jul-Hansen)
Try ftp.ctr.columbia.ede (anon ftp). We run Xkernel and it works fine.
| Name: Stephen P. Braham | Perversion: Quantum Cosmologist|
| Hangout: UBC physics | Signature: Euclidean |
| Vancouver, BC |--------------------------------+
| Canada | E-mail: email@example.com |
Subject: Re: Using Sun 3/50 as X-terminals [firstname.lastname@example.org]
[ Regarding "Using Sun 3/50 as X-terminals", kalli!fourx!bk.dk!rjh97@fourx.Aus.Sun.COM writes on Aug 18: ]
It's called Xkernel, and it is available from most FTP sites. SunOZ
even sells old 3/50's for Xterminals with it!
l & h,
|| Rene' Jul-Hansen || Phone : +45-42-800-500 ext 2595 ||
|| Bruel & Kjaer || FAX : +45-42-801-405 ||
|| Test Systems || ||
|| DK-2850 Naerum || E-mail : email@example.com or ||
|| DENMARK || firstname.lastname@example.org ||
| Fear not tomorrow - tomorrow will look after itself |
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