Back in 1998 (actually more like from summer 1997 until summer 1998,
i.e., the 1997-98 school year), before I started Quasijarus Project,
I was searching the World high and low for a copy of the 4.3BSD tape
set. That was before PUPS got its momentum with getting the $100
"Ancient UNIX" license deal from SCO, and more importantly, getting
people interested in preserving and working with Original UNIX, and
at that time the entire world was basically in a conspiracy of
anathema against original Bell/Berkeley UNIX, everyone just wanted
it to stay buried in its grave and not come up.
Getting a copy of the 4.3BSD tape set seemed next to impossible.
www.berkeley.edu was shockingly silent about the fact that Berkeley
UNIX aka BSD, UC Berkeley's greatest accomplishment in all of its
history, ever existed, much less saying how to order a tape. Finally
I found a phone number and a couple of E-mail addresses for some
office at UCB that was apparently kept for sending out tapes after
CSRG itself was gutted. The office was basically a voice mailbox and
a couple of E-mail addresses, with the two people who were actually
supposed to get those E-mail and voice messages being away somewhere
in San Francisco and taking a few weeks to answer inquiries.
Finally they got back to me and told me to send a check for $2400 for
4.4BSD and $1000 for 4.3BSD. Ouch! And of course some murky business
At that time, however, I attended Case Western Reserve University (CWRU)
and had a semi-staff relationship with their computer science department.
I realised that the university must have had a UNIX source license from
back in The Days, and most probably had the actual 4.3BSD tapes at some
point as well, especially given that the old-timers told me that they
were indeed running 11/780s before. But again the conspiracy of anathema
was working: everyone had completely forgotten about it, and no one on
the entire campus even knew that the university had a UNIX source license
(and old-timers confirmed that indeed there was one).
When spring 1998 came around, PUPS was making its debut with the $100
license deal from SCO. I didn't care so much about license stuff, but
it meant a resurgence of interest in Original UNIX and a community of
people involved with it, something that was completely lacking only a
few months prior. I wanted access to the PUPS archive, and I wanted to
use the university's license rather than fork over $100 for a personal
one. The only issue was *finding* that license. Then I got a bright
idea: since the license agreement was between CWRU and AT&T, there must
have been copies of it on both sides. If CWRU had chosen to forget
about the license they once paid big money for, how about if I dig up a
copy of the license agreement from AT&T side? So I asked SCO's Dion
Johnson about it, and lo and behold, a few days later a copy of CWRU's
original UNIX license agreement shows up in my box in the computer science
department mail room! Warren Toomey got another copy and soon I got an
overseas fax from him with passwords for his PUPS Archive! Whoo-hoo!
But I still needed 4.3BSD. It wasn't in Warren's archive since they
were still PDP-only at that time, and me holding a copy of my school's
AT&T UNIX license agreement didn't help convince anyone I knew who
might have had 4.3BSD tapes to share them with me.
In late 1997 I got myself an office at CWRU, it was the CES department's
computer junkyard room. I was quite happy, a room full of classic
computers was the best office I could get. It was actually two rooms,
411 and 412. Only 411 was accessible from the hallway, the entrance to
412 was inside 411. Both rooms were filled with classic computer gear,
but 411 was a little less full and actually had some room for a desk and
was usable as an office. 412, on the other hand, was *completely* filled
with classic computer gear (mostly Sun 3) and it was difficult for a
person to make it through to the end of the room. At the very end of
room 412 (the end opposite the entrance door from 411) there was
something that looked like a plastic curtain or plastic window blinds.
The architecture of that building was really intriguing, the kind one
finds only on good old university campuses, and I couldn't really tell
if there was supposed to be a window there or not. I just never gave
it much thought, and it was too difficult to climb over all that Sun 3
gear in the way to see exactly what it was.
On a shelf in room 411 there were some magtape reels, and I thought
that if they ever had 4.3BSD tapes, they ought to be there. But I
looked through all the tapes I could see and 4.3BSD wasn't there. Bummer.
Then one day in summer 1998 I came to work in the morning, went up
the stairs to my beloved Computer Engineering and Science department
4th floor, went to the end of the hallway to my office, and got in.
I turned on the lights and per my usual habit, peeked all over the
room to make sure all the fun classic computers were still there.
And lo and behold, at the very end of room 412, where I previously
saw those plastic curtains or window blinds or whatever, I now saw
two racks full of magtapes! It turned out that the plastic "curtains"
were actually vertically sliding doors (kinda like garage doors) of
two huge magtape cabinets! Another staff member must have had a need
to get some old magtape and didn't close the cabinet after he was done.
With trembling hands, I raced there and started looking through all
the tapes. And sure enough, in a few minutes I found all 3 tapes of
the 4.3BSD 1600 BPI distribution.
I spent pretty much the whole year prior to that moment searching the
World high and low for 4.3BSD tapes when they were sitting the whole
time in my own office! Now that's a "Duh!" moment.
I haven't got ULTRIX/VAX V3.0C, but:
V3.1 (disk image only)
I'd like to have the missing versions, too.
More ULTRIX-Manuals would be VERY interesting as well.
(I scanned the ones at bitsavers.com)
What type of VAX do you want to run ULTRIX on?
Yes, you read that correctly.
I have in my possession a TK-50 tape for the PDP-11 system which contains none other than
OS/2 operating system.
Many people have claimed this never existed. But I have the tape!
I had done a directory dump of it and can supply it.
One other person who's checked the directory listing has said it is authentic.
I'm not sure what to do with it, and I believe IBM made OS/2 open source, so technically it should be "free"
of it's chains
maybe someone can turn it into something useful, or just run it and have the most unique PDP on the planet, I don't know... whatever :)
anyhow, it's a really weird bit of computing history, and I'd hate for it to be lost. it should be in a museum :)
Use fowl language with Chicktionary. Click here to start playing!
A few weeks ago, some people in here were talking about putting network
cards in IBM PCs or XTs or something...
As it happens, I ran across a box of 3com 3c503 network cards (AUI and
10BaseT ports, 8 bit ISA card).
If anyone wants one, lemme know, I'm asking $5+shipping, and I'll have
the box with me at Dayton if you want to harass me about them, then.
Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
Hopefully, this request is clear enough to be understood. Both the
software and the hardware portion of the questions are independently
important, so please answer one aspect even if you can't help with
Over the past 30 years of using PDP-11 software (RT-11 over 95%)
and hardware, I have never had occasion to use a Unibus system with
more than 256 KB of memory (such as a PDP-11/34).
I would appreciate help in understanding the Unibus Map hardware which
(if I understand its purpose correctly) is to convert 18 bit addresses given
to a Unibus controller into 22 bit addresses for real physical memory for
systems like a PDP-11/84 and perform DMA from / to the hard drive.
Also helpful would be an explanation of the related software used under
RT-11 along with exactly where the Unibus Map hardware is located
on a real DEC system (on the CPU board I presume) since the identical
CPU board is used for both the Qbus and the Unibus with both the
PDP-11/84 and the PDP-11/94.
DO NOT READ THE FOLLOWING if you don't use RT-11!!!!!!!
By way of context, I have successfully modified the HD0: device driver
originally written by John Wilson which obviously executes ONLY under
E11. Last week, John mentioned in a private e-mail that it is possible to
direct the HD0: "controller" (all references to hardware in quotes refers
to E11 software) to ignore the "Unibus Map hardware". Since I execute
under E11 using Qbus emulation in order to stay totally compatible with
the real DEC PDP-11/23, PDP-11/73 and PDP-11/83 systems (all Qbus
and all with 4 MB of physical memory) which I have available for comparison
testing, user buffers in physical memory above 256 KB are often a situation
which can't be avoided.
Consequently, it had always been a high priority to have a 22 bit device
for HD0: under E11 BECAUSE HD0: is TWICE as fast as MSCP (DUX.SYS
device driver). In addition, I have also been able to write code that
overhead of using the HD0: device driver which makes HD0: FOUR times as
fast as MSCP and also allows for direct access of 2 TB of disk space via a
32 bit block number. Since I have an immediate application for a data base
of 32 GB (I have a disk drive of 160 GB, so 32 GB is only 20% of its
although under RT-11 15 years ago in 1992, 32 GB would have been only a
dream), the code which I have written will actually be used quite soon.
However, I would very much like the HD0: device driver to be able to execute
under both "Qbus" and "Unibus" hardware. And while I can test the code for
a "Qbus" and for a "Unibus" without a "Unibus Map", I am not clear about
what is required for a "Unibus" with a "Unibus Map" such as a PDP-11/84
running under RT-11.
Megan are you still watching the list? Allison, if you can't answer,
but Megan help? Is anyone else familiar enough with the "Unibus Map" that
you can suggest what RT-11 actually needs to do with the "Unibus Map"?
A solution is to check the "hardware" configuration and refuse to allow the
HD0: device driver to LOAD or .Fetch if the modified version is not
executing under "Qbus hardware".
By the way, if anyone who is thinking of a controller for the Qbus which is
able to use SATA drives, I would be happy to modify an RT-11 device
driver to an HD0: type device that is able to handle drives up to 2 TB
in the same manner that DU(X).SYS can handle drives up to 8 GB.
If you attempted to send a reply and the original e-mail
address has been discontinued due a high volume of junk
e-mail, then the semi-permanent e-mail address can be
obtained by replacing the four characters preceding the
'at' with the four digits of the current year.
I'm trying to use simh to create an RT-11 bootable RX50 disk and am
following some instructions posted by Megan Gentry a while ago. I've
created the disk image but am having trouble making it bootable. The
copy/boot command claims it can't find the RT-11 image but it is
clearly on the floppy (du0). Any idea what's going wrong?
RT11XM.SYS 106P 20-Dec-85 DU .SYS 8P 20-Dec-85
TT .SYS 2P 20-Dec-85 PIP .SAV 30P 20-Dec-85
DUP .SAV 47P 20-Dec-85 DIR .SAV 19P 20-Dec-85
RESORC.SAV 25P 20-Dec-85 EDIT .SAV 19P 20-Dec-85
MACRO .SAV 61P 20-Dec-85 CREF .SAV 6P 20-Dec-85
LINK .SAV 49P 20-Dec-85 LIBR .SAV 24P 20-Dec-85
FILEX .SAV 22P 20-Dec-85 HELP .SAV 132P 20-Dec-85
BATCH .SAV 26P 20-Dec-85 FORMAT.SAV 24P 20-Dec-85
SETUP .SAV 41P 20-Dec-85 SPEED .SAV 4P 20-Dec-85
DATIME.SAV 4P 20-Dec-85 LET .SAV 5P 20-Dec-85
SPLIT .SAV 3P 20-Dec-85 CONFIG.SAV 7P 20-Dec-85
SWAP .SYS 27P 20-Dec-85
23 Files, 691 Blocks
95 Free blocks
.copy/boot du0:rt11xm.sys du0:
?DUP-F-File not found DU0:RT11XM.SYS
>Subject: TU-58s (was Re: Some progress with my PDP-11/73 system)
> From: "Ethan Dicks" <ethan.dicks at gmail.com>
> Date: Wed, 11 Apr 2007 21:54:24 -0500
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>On 4/11/07, Jerome H. Fine <jhfinedp3k at compsys.to> wrote:
>> But I once had a project that
>> used a real DEC TU-58. Not the fastest "random"
>> access device!!!!!!!!!!!!!!!!!!
>They work better as "sequential" access devices - being long and thin
>and travelling in one dimension, go figure. We used to optimize file
>order on our console TU58s to speed up the boot times on our 11/725s
>and 11/730s. Since the file order doesn't change, one just builds a
>TU58 with EXCHANGE with each file following the other. The console's
>8-bit-micro must cache the directory block, since the tape didn't whip
>back to the start between each file.
>Using unaltered console tapes from DEC resulted in, IIRC, about 15
>minutes from turning the key to booting the hard disk. Replacing that
>tape with one of our own devising shortened that pre-boot time to well
>under 3 minutes.
>I'd hate to rely on a TU-58 and no other block-addressable media on a
>PDP-11, though. I survived a PDP-8 with a TD8E and TU56, but it was
>somewhat tedious (cool to watch, though). TU-58s weren't as cool,
So happens one of my "small" pdp-11s uses a Tu58. the system is a BA-11V
with an 11/23 256k of ram, DLV11J and MRV11 rom(boot). Takes 10 minutes
to boot, setup VM: then copy key files to and reboot. After that it's
pretty decent even if I have to access a file on tape.
Everytime I runs it with a bunch of kids of the current PC generations
they go gaga and comment on how slow then I explain the amount of ram and
storage then they are amazed it can be a functional machine with so little.
They can't imagine a useful machine with 32kW of ram and 256kb of storage.
On the flip side I've used that same Tu58 to bring up iron that had no
removable storage. It's slow but very dependable.
heres a link to some lead solder
On 10/2/07, Zane H. Healy <healyzh at aracnet.com> wrote:
> At 11:37 PM +0100 10/1/07, Tony Duell wrote:
> >For the first part, I'd offer to do it for you, but it would be illegal
> >to do so. Owing to our totally daft laws, (a) I'd have to use lead-free
> >solder, which I don't have, don't trust, and am not set up to use and
> How hard is it to work with lead-free solder, and is it becoming a
> problem to get traditional solder in the US? I've been meaning to
> pick up a few rolls. As I'm still using a roll purchased in the 80's
> from Rat Shack for building a couple things for my VIC-20, I haven't
> been going through it that fast. Though I seem to be using it more
> often now than.
> >it has been said that if an enthusiast (specifically a model engineer,
> >but it would apply here too) does jobs for others, then his workshop
> >becomes a workplace and is covered by all the daft health-and-safety
> >rules that I have no desire to get involved with, and which quite
> >honestly, would stop me from getting on with things.
> Does it count as a job if you don't take payment?
> | Zane H. Healy | UNIX Systems Administrator |
> | healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
> | MONK::HEALYZH (DECnet) | Classic Computer Collector |
> | Empire of the Petal Throne and Traveller Role Playing, |
> | PDP-10 Emulation and Zane's Computer Museum. |
> | http://www.aracnet.com/~healyzh/ |
Have a working Intel Above Board Plus 8 with 2MB RAM and would like to
populate it to the full 8MB. It will take 120ns or faster 1mbit chips
-- but where can one find that kind of thing nowadays? Are those still
commercially available or am I going to have to scavenge them from
Manual lists acceptable part numbers like:
...etc but google searches haven't been very fruitful (that is, the
pages returned when I search for IC part numbers don't return vendors
with plain pricing/availability info).
I just want a few tubes of these to populate the board, I'm not looking
for a box of 'em :-) Any pointers?
Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/
Help our electronic games project: http://www.mobygames.com/
Or check out some trippy MindCandy at http://www.mindcandydvd.com/
A child borne of the home computer wars: http://trixter.wordpress.com/