[cctalk] Re: Vintage computing in the San Francisco bay area

[Anders Sandahl via cctalk]

Hi!

It's many interesting things here.

I hope I can pass by Anchor Electronics. When I was looking on the map 
where to find it I noticed that Intel (and it's museum) is just a few 
blocks away.


I think I'll miss Electronics flea market, I have read abut this in 
another context as well. It would have been great fun!


We will miss the observatory's free views.

Well, I have to stay longer the next time.

/Anders

On 2024-06-14 19:32, Curious Marc wrote:
If you happen to be there on the right Sunday, don’t miss the 
electronics flea market!

Electronics Flea Market 
electronicsfleamarket.com 
favicon.ico 


Also if you need old ICs and transistors at 1960’s prices, that odd 
connector or the big old Sprague capacitor there is Anchor Electronics:

Anchor Electronics 
anchor-electronics.com 
favicon.ico 



You could view a lot, bid on it and pick it up at Auction BDI
Hibid 
auctionbdi.hibid.com 




Also take advantage of the clear California skies with telescope 
viewing nights at the Foothill Observatory or at the Chabot Museum, 
or, even better, at the Lick observatory
Foothill College Observatory - Foothill College 


foothill.edu 
favicon.ico 


https://chabotspace.org/events/free-telescope-viewings/
lh_domes_wide.jpg
Public Evening Tours 

lickobservatory.org 





Marc

On Jun 13, 2024, at 12:15 PM, anders--- via cctalk 
 wrote:


Hi,

Soon I will travel to US and San Francisco/San José Area. Any tips 
for vintage computing and surpuls electronics?


CHM is manatory, I'll go there. It would have been nice to see the 
PDP-1 in action, but I suscpect that we will not make it when it's 
demonstrated.


/Anders

Re: Available: Wang 370 book

[Anders Sandahl via cctalk]

It's been taken.

> Hi,
>
> I got a stash of documentation yesterday. Found a book "WANG 370
> calculating system, program library volume 1" which I don't have any use
> for. Looks to be almost unread, it has become a bit yellow and it has a
> small sticker on the front page. Printed in 1968.
>
> Is there anybody that want's it (free pickup in south Sweden or for
> postage fee)?
>
> /Anders
>

Available: Wang 370 book

[Anders Sandahl via cctalk]

Hi,

I got a stash of documentation yesterday. Found a book "WANG 370
calculating system, program library volume 1" which I don't have any use
for. Looks to be almost unread, it has become a bit yellow and it has a
small sticker on the front page. Printed in 1968.

Is there anybody that want's it (free pickup in south Sweden or for
postage fee)?

/Anders

Re: Looking for Limited Function Board

[Anders Sandahl via cctalk]

Hi,

I have looked into my PDP-8/a computers now. The small one have the
limited function board that you want. That is the machine that should be
identical to yours.

In my big PDP-8a/420 I have the same board as you have "have.jpg" but in
another revision (no IDC header connector, just the DIL connector).

The big machine is a core memory machine. I had a quick look at the
schematics, they are not compatible.

/Anders

> Hi Paul
>
> I have put pictures of the boards here:
>
> http://pdp8.se/slask/LFB
>
> have.jpg is the board I have and want.jpg is the one
> I'm looking for.
>
> The identifying numbers are in aproximately the same
> place. But you can clearly see that the "want" board
> is much simplified and if I interpret the
> documentation correctly they are not compatible.
>
> I'm happy to be proven wrong, maybe I should just try
> it.
>
> /P
>
>
> On Tue, Feb 05, 2019 at 07:54:39PM -0600, Paul Anderson via cctalk wrote:
>> Hi Pontus,
>>
>> I looked at my limited function front panels, and they were 54-11507s. I
>> have not looked at any prints. Where did you find the 54-11165 number?
>> Could it be for a Q-bus system?
>>
>> The 50-X is the etched PCB. DEC usually added a 1 to that number to
>> make it complete board.
>>
>> Thanks, Paul
>>
>>
>>
>> On Mon, Feb 4, 2019 at 9:41 PM Paul Anderson  wrote:
>>
>> > I have a few of the limited function and programmers panels. I do not
>> > recall either of them being dependent on particular backplane. I'll
>> try to
>> > pull a few a few later and check the part number on them.
>> >
>> > Remember, a 54-X number can become a 70-X with the addition of
>> a
>> > cable or something simple.
>> >
>> > Paul
>> >
>> > On Mon, Feb 4, 2019 at 12:51 PM Anders Sandahl via cctech <
>> > cct...@classiccmp.org> wrote:
>> >
>> >> > Date: Sun, 3 Feb 2019 22:22:42 +0100
>> >> > From: Pontus Pihlgren 
>> >> > To: "General Discussion: On-Topic and Off-Topic Posts"
>> >> >   
>> >> > Subject: Looking for Limited Function Board
>> >> > Message-ID: <20190203212242.gf24...@update.uu.se>
>> >> > Content-Type: text/plain; charset=us-ascii
>> >> >
>> >> > Hi
>> >> >
>> >> > I'm restoring a PDP-8/a with the help of some
>> >> > friends. The CPU is now passing the MAINDECs I've
>> >> > thrown at it. The memory is a modern semiconductor
>> >> > board my friend Anders Sandahl made.
>> >> >
>> >> > This machine is pieced together from several others
>> >> > and the limited function panel I got does not match
>> >> > the backplane I have.
>> >> >
>> >> > My theory is the DEC simplified the design of the
>> >> > boardto cut costs and simpler design is not
>> >> > compatible. Mine is labeled (on the PCB):
>> >> >
>> >> > "LIMITED FUNCTION BD.
>> >> > 5411507
>> >> > 5011506C-P2"
>> >> >
>> >> > And the one I need is:
>> >> >
>> >> > "LIMITED FUNCTION
>> >> > 5411165
>> >> > 5011167"
>> >> >
>> >> > However, the picture I have of the other is not so
>> >> > good. I may have read the numbera wrong.
>> >> >
>> >> > I would very much like to buy one to finish this
>> >> > project.
>> >> >
>> >> > /P
>> >>
>> >> Får du inget napp så ritar jag upp ett kort till dig, det borde gå
>> att
>> >> flytta över brytarna från det du har. Lite synd att scrappa ett
>> >> originalkort bara, men är man försiktigt så man inte tar sönder det
>> så går
>> >> det ju att återställa...
>> >>
>> >> /A
>> >>
>> >>
>

Re: Looking for Limited Function Board

[Anders Sandahl via cctalk]

> Date: Sun, 3 Feb 2019 22:22:42 +0100
> From: Pontus Pihlgren 
> To: "General Discussion: On-Topic and Off-Topic Posts"
>   
> Subject: Looking for Limited Function Board
> Message-ID: <20190203212242.gf24...@update.uu.se>
> Content-Type: text/plain; charset=us-ascii
>
> Hi
>
> I'm restoring a PDP-8/a with the help of some
> friends. The CPU is now passing the MAINDECs I've
> thrown at it. The memory is a modern semiconductor
> board my friend Anders Sandahl made.
>
> This machine is pieced together from several others
> and the limited function panel I got does not match
> the backplane I have.
>
> My theory is the DEC simplified the design of the
> boardto cut costs and simpler design is not
> compatible. Mine is labeled (on the PCB):
>
> "LIMITED FUNCTION BD.
> 5411507
> 5011506C-P2"
>
> And the one I need is:
>
> "LIMITED FUNCTION
> 5411165
> 5011167"
>
> However, the picture I have of the other is not so
> good. I may have read the numbera wrong.
>
> I would very much like to buy one to finish this
> project.
>
> /P

Får du inget napp så ritar jag upp ett kort till dig, det borde gå att
flytta över brytarna från det du har. Lite synd att scrappa ett
originalkort bara, men är man försiktigt så man inte tar sönder det så går
det ju att återställa...

/A

Re: PDP8/a Initial Power Up (Columbia Valley Maker Space)

[Anders Sandahl via cctalk]

Hi,

Most of the documentation is found here:
http://www.bitsavers.org/pdf/dec/pdp8/pdp8a/

For some basic testing look here:
http://www.bitsavers.org/pdf/dec/pdp8/pdp8a/EK-8A001-OP-002_PDP-8A_Operators_Handbook_Sep76.pdf
in chapter 5.1 (pdf page number 48).

To do basic memory read and write:
Press MD and DISP (memory data register will be displayed on the four digits)
Then press 0200 and LA (load address)
Press 5050 and D-THIS (deposit to memory on this adress, no increment).
Press E-THIS (examine on this memory address, no increment) and you should
get the same result back.

Another good place to be is to post in the DEC category on the VCFED
forum: http://www.vcfed.org/forum/forumdisplay.php?23-DEC

Good luck!

/Anders


> Date: Fri, 02 Nov 2018 08:56:08 -0700
> From: Columbia Valley Maker Space 
> To: cctalk@classiccmp.org
> Subject: PDP8/a Initial Power Up
> Message-ID: <27c485c4ae4ef3a32a0756739e85c...@cvmakerspace.ca>
> Content-Type: text/plain; charset=US-ASCII
>
> Hello everyone - my first post, so be easy on me!
>
> I have just acquired a PDP8/a and a Remex punch tape reader. The unit
> starts up and displays some data on the displays, and that is about all
> I can tell you.
>
> I am going to do some googling about this, but I am looking for basic
> initial tests  something I can enter via the keypad.
>
> I learnt some basic programming in 1978 on a PDP8, but that was the last
> time I touched one, so if you are going to suggest some tests, I need
> complete instructions. I don't know how to modify a memory location, let
> alone enter and check a program. I will pick all this back up very
> quickly and I do use computers in my work a lot - I am also an
> electronic hobby guy and have been for years. My point is I am OK with
> component level measurements, I have a scope and probes, etc.
>
> So there you go - hope to hear back form you guys.
>
> Cheers,
>
> Brian
>
> --
> Brian McIntosh
> Columbia Valley Maker Space Communications Guy
> i...@cvmakerspace.ca
> 250 270 0689

Re: Re: SPACEWAR! Switch Boxes for a PDP-12

[Anders Sandahl via cctalk]

> Date: Mon, 24 Sep 2018 12:26:57 -0600
> From: Eric Smith 
> To: "General Discussion: On-Topic and Off-Topic Posts"
>   
> Subject: Re: SPACEWAR! Switch Boxes for a PDP-12
> Message-ID:
>   
> Content-Type: text/plain; charset="UTF-8"
>
> On Mon, Sep 24, 2018 at 11:23 AM, Robert Feldman via cctalk <
> cctalk@classiccmp.org> wrote:
>
>> >that is what the PDP-1 at CHM has been using for over 10 years
>>
>> https://na.suzohapp.com/products/pushbuttons/58-9166-L
>
>
> Ken Sumrall built the Spacewar control boxes used at the museum, with some
> suggestions from me. We originally intended these to be temporary, and to
> build nicer control boxes later. Since they were intended to be used by
> restoration team members, and possibly museum guests, we wanted them to be
> reliable rather than authentic, and specifically did NOT want these
> temporary boxes to themselves become historical artifacts. We chose
> inexpensive but robust arcade pushbuttons. They can take a beating, and in
> the event that the microswitch does break or wear out, it can easily be
> replaced, though the complete button assembly with microswitch is not
> expensive. The boxes are particle board. We used DE-9 connectors. On the
> PDP-1, hyperspace is invoked by the CW and CCW rotate controls being
> activated simultaneously, so the hyperspace button is wired via series
> diodes to both rotate buttons.
>
> After we built them, Steve Russell pointed out to us that although these
> boxes don't look like at all like the originals, they actually are
> authentic, in the sense that like the originals, these boxes were quickly
> knocked together rather than carefully planned, and are functional rather
> than pretty.
>
> We positioned the individual buttons based on the layout used on one of
> the
> Atari coinop games, "Space Duel" IIRC, on the because Atari had done a
> good
> job of laying them out to be easy to use.
>
> I'm not trying to discourage anyone from trying to make replicas of the
> original Spacewar control boxes, but aside from some grainy photos and a
> brief description, not much detail about them is actually known.
>
> We do not know what controls were used when PDP-1 Spacewar was
> demonstrated
> at the Computer Museum in Boston. We don't think they had the original
> control boxes. Possibly they might have just used the PDP-1 console
> switches, which is quite inconvenient and increases wear on those
> switches.  When we restored the PDP-1, we discovered that some of the
> console switches were flaky, and upon inspection, that they appeared to
> have been replaced multiple times, with suboptimal craftsmanship.
>

I like the ideas with the diodes for hyperspace, I'll steal that right away!

Re: SPACEWAR! Switch Boxes for a PDP-12

[Anders Sandahl via cctalk]

> Date: Sun, 23 Sep 2018 10:46:48 -0400
> From: Michael Thompson 
> To: cctech 
> Subject: SPACEWAR! Switch Boxes for a PDP-12
> Message-ID:
>   
> Content-Type: text/plain; charset="UTF-8"
>
> Visitors to the RICM like to play SPACEWAR! in the PDP-12. Unfortunately
> using the console switches is uncomfortable, not intuitive, and is tough
> on
> the switches. We would like to recreate the switch boxes used on the PDP-1
> to make playing a better experience.
>
> We modified the source
> 
> from D.E. WREGE
> 
> to use the LINC SXL instruction to read the PDP-12 GPIO signals, and
> prototyped two switch boxes using recycled toggle switches. This works
> great, so now we need to make better switch boxes.
>
> This CHM article shows what we want to recreate.
> 
> This article shows a sketch of the switch boxes.
> 
> A generous donor made these boxes for us.
> 
>
> The lever switches are turning our to be difficult to find at a reasonable
> price. We found some NOS SwitchCraft lever switches that looked like the
> sketch and the PDP-1 pictures and were a reasonable price, but our order
> was rejected because they only had one in stock. eBay has Mossman and
> SwitchCraft, but they are either very expensive (more than $50 each), or
> they only have one available.
>
> The switches that we are looking for need to be SPDT, three-position,
> non-locking, center off. (If the switches have more than one pole we can
> remove the extra poles to keep the operational force low.) Before we cave
> in and buy some modern C&K toggle switches, does anyone have a source for
> Mossman or SwitchCraft switches at a reasonable price?
>
> --
> Michael Thompson

Michel,

I did just what you did for being able to play Spacewar! on my PDP-8a (I
have KK8E with EAE, VC8E and the DK8E real time clock). But since the
frontpanel doesn't have proper switches for the switch register I had to
build game hand controls.

I built them just like those that can be spotted in the video from CHM:
https://www.youtube.com/watch?v=1EWQYAfuMYw but smaller.

I just used ordinary arcade style buttons and connected them to the
digital inputs on the DKC8A board and modified the source code for that.

Those hand controls have two switches for rotate left/right, one for fire
and one for acceleration. The last one is for hyper speed but that is
triggered by pressing left/right switches at the same time. I intended to
fix this so it should be triggered by the last button but never came to
it.

Unfortunately I haven't written on my page https://www.pdp-9.net/pdp-8a on
this yet...

/Anders

Re: Updated Spacewar for the PDP-8/I, 8/E, etc....

[Anders Sandahl]

I used Lyle's updated version to show Spacewar on my PDP-8/a during this
weekends retro event "RetroGathering" in Sweden. It works great!

I did two modifications to the code:

1. Use digital IO instead of the switch register so I could use hand
controls to let the audience play the game.

2. Fixed a bug so that timer interrupts is turned on if the DK8-EP
programmable real time clock is used.

/Anders


>
>I just updated D.E. Wrege's Spacewar as follows:
>
>1. Correctly supports slow monitors attached to a VC8/E interface by
>correcting mistakes made in the VC8/E driver code. The code now follows
>DEC's recommended method of waiting on the VC8/E.
>
>2. Starts up with spaceships (as opposed to UFO's) per the original
>Spacewar! by Steve Russell.
>
>3. Now supports the DK8-EC Crystal Clock
>
>Items 1 & 2 were released by me previously - but support for the
>DK8-EC is brand new.
>
>The new source and listing can be picked up via anonymous FTP to
>bickleywest.com and the pdp8_spcwar directory.
>

BASF 8" floppy drive documentation and alignment

[Anders Sandahl]

Hi,

I'm looking after some documentation on the BASF 6104 8" floppy drive. I
really want to know how to align it properly.

I do not have a 8" alignment disc, can it be done without one?

/Anders

Re: Re: DNIX and ABCenix install media disk images.

[Anders Sandahl]

Not that I'm aware of. I can do it, but I don't have daily access to  
the machine so it will take a couple of months.


has the firmware been dumped from this?

On 11/21/16 6:54 AM, Anders Sandahl wrote:




On 11/18/16 12:02 AM, Pontus Pihlgren wrote:

This is great! Thanks Mattis, Jonas and Al.

Somewhere I have an early DNIX system image from a development machine.
I don't know if that is interesting to put on bitsavers as well?


yes, I think so



And I have documentation and software to the Luxor ABC1600 as well.

Temporary link: http://blue.abc80.net/archive/luxor/ABC1600/

Most of it is in Swedish though.

/Anders

Re: DNIX and ABCenix install media disk images.

[Anders Sandahl]

On 11/18/16 12:02 AM, Pontus Pihlgren wrote:

This is great! Thanks Mattis, Jonas and Al.

Somewhere I have an early DNIX system image from a development machine.
I don't know if that is interesting to put on bitsavers as well?


yes, I think so



And I have documentation and software to the Luxor ABC1600 as well.

Temporary link: http://blue.abc80.net/archive/luxor/ABC1600/

Most of it is in Swedish though.

/Anders

Re: VC8E Option

[Anders Sandahl]

>On Thu, Sep 8, 2016 at 11:59 PM, Pontus Pihlgren 

>wrote:

> >
> >Hmm, yes, I think I might actually. What do you have so far?
> >

>
>I don't have much yet, unfortunately; still trying to get my thoughts
>together on how it should be implemented. Mark Pizzolato recommends using
>as much existing display code as possible. I did start an issue for it
>here, though:https://github.com/simh/simh/issues/337
>
>Kyle

I found Phils code when I looked into this yesterday. There also the VR12
emulation in the, now dormant, GreenPea[1] project. I was wondering which
graphics library to use but since both simh and GreenPea uses SDL I guess
that settle that.

I found and read Dougs[2] VC8E summary. Do you have any other docs? A
cursory look on bitsavers didn't give any result.

/P

[1]https://github.com/andysan/greenpea/
[2]http://homepage.cs.uiowa.edu/~jones/pdp8/man/vc8e.html


There is at least schematics on bitsavers: 
http://bitsavers.trailing-edge.com/pdf/dec/pdp8/omnibus/VC8-E_engineering_drawing.pdf

I encourage you to do this, I have a working VC8E if you what me to try 
anything.

/Anders

Re: PDP-8 core memory problems.

[Anders Sandahl]

So what are the other options?
* Trying to repair the unit. Every plane is soldered together with the ones
nearby to convey the X/Y signals. This can probably be undone with a
patience and soldering braid. But what are the chance that the X/Y wires
gets lose then? Are those soldered or welded into place?

Then it would be quite tricky to just identify where it is actually broken.
Any ideas for how to do this? A microscope of course. Any other ideas?
Applying an electrical field between the wire and something else and try to
detect it?

A stereoscopic microscope and a lot of patience is a good staring point.


Repair. If the wire is broken in the mat it is probably not to difficult to
pull out the broken parts. But then the new wire has to be spliced in. What
is t he best technique to do that?
How to push in the new wire in the matrix? I now that Anders was able to do
this with a broken X-wire in a PDP-8/L stack.
I used a pair of tweezers to push the new thread in, one core at a time. 
You should try to change as small part as possible. I just changed the 
thread thru the first 64 cores, then I joined the two threads together 
in the middle of the core plan. I then used nail polish as an isolatur.


I didn't thought I had something to lose to try to repair the existing 
core stack. Without it the computer is really not working at all. I'll 
think you should try to repair it. Start to bring out the core stack 
and  then turn it around for a while until you are brave enough.


I found some pictures on stacks to the 8/L in pieces before I started on 
the internet, that helped me to understand what I had to master.


/Anders

PDP-8 _Introduction_to_Programming_ & _Programming_Languages_(Scanned) Covers Needed

[Anders Sandahl]

>Does anyone have DEC's PDP-8 _Introduction_to_Programming_, Editions 3
>and/or 4 and/or the PDP-8 _Programming_Languages_ handbooks?
>
>If you're not willing to part with your copy, could you scan the front
>covers of these handbooks and tell me which Edition(s) they are from?  >I'm
>especially looking for the front cover that had the "format generator
>program" printed on it in the background.
>
>I'm also looking for DEC's PDP-8 _Programming_Languages_.  If you are not
>willing to part with them, could you scan the front cover and tell me >which
>Edition(s) it/they are from?

I have the second, fourth and fifth edition of "introduction to
programming". The fourth and fifth edition looks the same. I'll send a
scanned cover of fourth edition to Bob.

I'm not willing to part with any of them.

/Anders

Re: WANTED: PDP-8 KE8E Extended arithmetic element

[Anders Sandahl]

>You used to be able to find a set with connector blocks for $200 to $300
>range on EBay.  But I haven't seen any pop up for a couple of years now.
>

There are actually two individual board on eBay now, but the they are a
bit expensive, ~$250 each. The freight change is about $200 to Sweden for
each board (don't now if they combine chipping). I'll guess I have to pay
for customs as well...


>Keep an eye on machines.  These options were found in the variants of E's
>(F and M) and some A's.  You might have to buy another machine in order to
>get this option.
>

If I only could find one...

>Remember that you are looking for what I would classify as a fairly rare
>option on machines that are becoming rare now.  There are not a lot of
>these machines in service anymore.
>
>Good Luck!

Thanks, I know that those things starts to get really rare. I could live
with a broken set.

/Anders

WANTED: PDP-8 KE8E Extended arithmetic element

[Anders Sandahl]

Hi,

I've been looking for a KK8E for some time now. It's the set of two
boards: M8340/M8341. If you have one to sell me please contact me off
list.

I'm also interested in hints that can lead me to one.

I'll give them a good home.

/Anders

AJRLADO diskless controller test

[Anders Sandahl]

Hi,

I tried to run the diskless controller test on my PDP8/A. It fails before
any tests has been executed. I suspect that my RL8A controller is broken.
The CPU tests and the memory tests works fine.

The test stopped @ address 5713 (display shows 5714), MD buff = 7402, AC = 0

Does anybody have the source code to this test? Earlier someone got the
test instructions photographed from microfishie.

The complete story is that the machine worked just fine, booted OS/8. Then
I changed the CPU from KK8A -> KK8E. The KK8E had some problems, but works
fine now. But now the machine doesn't boot OS/8 with any of the CPU's. The
diskless controller test stops at the same location with any CPU.

/Anders

Re: PDP8 MAINDEC ?

[Anders Sandahl]

>Date: Mon, 2 May 2016 12:37:43 +0200
>From: Mattis Lind 
>To: "General Discussion: On-Topic and Off-Topic Posts"
>
>Subject: Re: PDP8 MAINDEC ?

> Selling, trading, giving away. What ever works. Rather than the garbage
> bin. I have no need for multiple copies. Just checking if someone like to
> play with the real paper tapes.

> When it comes to digital copies the plan is to check what is already online
> and then scan / read those that aren't. But it is a long time plan since it
> takes quite a while. Unless you feel like helping out... A page feed
scanner and a couple of thousands of pages.
>
> /Mattis

I can take good care of (some part of) it, a bit depending on which tapes
and documents you have.

/Anders

Re: TU-58

[Anders Sandahl]

Great!

We take it off list from here.

Very nice work on the HP by the way!

/Anders


> Date: Wed, 2 Dec 2015 21:04:55 +0100
> From: Rik Bos 
> To: "General Discussion: On-Topic Posts" 
> Subject: RE: TU-58
> Message-ID: 
> Content-Type: text/plain; charset="utf-8"
>
> Anders,
>
> I can fix them, if you look at my Flickr page you can see some examples of
> new capstans I made.about halfway the site.
> www.flickr.com/hp-fix
> And of the HP3000 ;)
>
> -Rik

Re: TU-58

[Anders Sandahl]

> Date: Wed, 2 Dec 2015 12:40:08 +
> From: Rod Smallwood 
> To: "General Discussion: On-Topic and Off-Topic Posts"
>   
> Subject: TU-58
> Message-ID: <565ee6a8.2030...@btinternet.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Dear List
>   While the silk screeners process the panels I have a
> couple of days for a little project
> I have a TU-58 and yes it had gooey drive wheels.
> Now it no longer has that problem but I have black and gooey fingers.!!!
>
> I know this issue has been addressed before.
> So I think somebody must know where I can get the right tubing to
> replace the degraded stuff.
> The drive hub is 0.42" and the rubber bit was 0.62" o/d
> A UK source would be nice,
>
> Rod
>

I'm also intessted in this. I have a dual TU-58 that belongs to my VAX
11/730 that need new capstan rubber. European source...

/Anders

Available: HP3000 serie 52 parts

[Anders Sandahl]

Hi,

I have a bunch of PCB's from a HP3000 series 52 computer. Is some one
interested in those?

The machine itself was still working when it was taken out of service in
the late 1990's. No guaranties are given though.

The location is in south of Sweden, but I'll guess I can pack them and
send them elsewhere.

There is also a power supply available. A disk station and some kind of a
tape drive, each sitting in a cabinet of their own. Free for pickup.

Don't know more than this, but I can find out more details if anyone is
interested.

/Anders