Now that we can finally see more close up what the internal workings of an Entrex Data/Scope keyboard look like, we can see the manufacture and at least one of the model numbers:
KEY TRONIC CORPORATION
065-01159-
And then the stamped 003 after that. Not sure how significant that is, but since it's stamped and the other numbers are etched directly into the board, it seems like those last 3 digits can change easily, where the previous digits are the true model number "set in stone" for this board.
Let's see what insights the experts over on Deskthority.com have on this...
Seeking To Preserve Entrex 180, 280, 380, 480, 580 & Nixdorf 620 Systems & Data/Scope Keystation Terminals
Sunday, June 9, 2019
Thursday, June 6, 2019
Entrex Data/Scope in Atari 400 800 XL XE catalog - ZiMAG
I came across this advertisement for ZiMAG magnetic media (clearly quite vintage early 80s) at
And on PAGE 10 (or 11, depending on if you count the front cover as page 1), we clearly see an Entrex Data/Scope! What's that doing in there? Well...let's take a closer look...
And on PAGE 10 (or 11, depending on if you count the front cover as page 1), we clearly see an Entrex Data/Scope! What's that doing in there? Well...let's take a closer look...
Firstly, the chassis cover is painted this very nice dark charcoal color, which matches the advertisement colors very nicely. I've never seen one in charcoal before, only white and off-white (or yellowed with age). I've seen red, but then again, it could be for exactly the same "display only" reason that I suspect here. Here's why I say this:
It sure looks like the blue and white keys have been all painted black, and that a few red and black keys have been moved around a bit. (Note that only a few black keys show the white lettering, but most are just plain black).
For example, the HELP! key should be on the top of the right (atop the right vertical row), but instead, it is on the extreme left middle of the main key group, which should be a red RESET key instead of the black HELP! key.
It sure looks to me like this keyboard has been modified for the aesthetics of the advertisement, rather than functionality. Still, VERY nice job...from first glance, it is quite an attractive piece in this context.
What I'm more interested in, is the code on the screen. Looks like standard line basic to me...was it really displayed on this Entrex, or superimposed there? It appears a bit too close to the top edge to be on a CRT, and they were all black & white screens, displaying only 480 characters (12 rows of 40), which is WAY larger letters than what se see here... BUT, who knows?
Wednesday, June 5, 2019
Entrex Data/Scopes (Keystations) spotted in Germany
We JUST found TWO Entrex Data Scopes on eBay.de from March & April 2018...in GERMANY!
And they SOLD! And we missed them...
Haben Sie eine dieser Data/Scope Keystations gekauft? Bitte kontaktieren Sie uns, wenn Sie es getan haben!
Did you buy one of these Data/Scope Keystations? Please contact us if you did!
March 5, 2018 222852550966 (archived by me)
(original auction, now removed, was at http://bit.ly/312R6Xc )
AND
April 28, 2018 222930393667 (archived by me)
(original auction, now removed, was at http://bit.ly/31bKSob )
On first guess, one might think that these two auctions are one single Keystation, listed twice. However, while each of them are remarkably similar, a closer inspection of the labels and serial numbers indicate that they are, indeed, two distinctly separate Keystations.
So, how did we miss these? I guess we failed to learn how to set up eBay alerts in GERMANY...that's why...ebay.de only, NOT reported on ebay.com!
And they SOLD! And we missed them...
Haben Sie eine dieser Data/Scope Keystations gekauft? Bitte kontaktieren Sie uns, wenn Sie es getan haben!
Did you buy one of these Data/Scope Keystations? Please contact us if you did!
March 5, 2018 222852550966 (archived by me)
(original auction, now removed, was at http://bit.ly/312R6Xc )
AND
April 28, 2018 222930393667 (archived by me)
(original auction, now removed, was at http://bit.ly/31bKSob )
On first guess, one might think that these two auctions are one single Keystation, listed twice. However, while each of them are remarkably similar, a closer inspection of the labels and serial numbers indicate that they are, indeed, two distinctly separate Keystations.
So, how did we miss these? I guess we failed to learn how to set up eBay alerts in GERMANY...that's why...ebay.de only, NOT reported on ebay.com!
Auction 222852550966 (serial # 220123)
Saturday, June 1, 2019
Pertec T7840
And hats off to Al Kossow at bitsavers.org
Even though this particular model can't be found at
Al knew that he had seen this tape transport as a [rebranded] Burroughs Series 9491 Magnetic Tape Unit, so he was able to provide the exact correct manual! Thank you, Al!
Years later, we map the pinout from the 100884_T6x40-T6x60_Sep78 manual on bitsavers
(because there are no detailed T7x40 manuals there yet, so this seems to match!)
-------------------------------------------------------------------------------------------
Archival of someone else's tape archive process:
https://hackaday.io/project/133859/gallery#f4a5a1568797bfc70b0d1fa9469f09c8
https://drive.google.com/drive/folders/10xKa6q84BujQPtLeVs6Y-TdBVcJkQtI0?usp=sharing
http://www.vcfed.org/forum/showthread.php?17430-Pertec-ISA-interface-card&p=152911#post152911
https://museo.freaknet.org/en/recupero-dati-nastri-magnetici-del-computer-polacco-mera-400/
https://drive.google.com/drive/folders/10xKa6q84BujQPtLeVs6Y-TdBVcJkQtI0?usp=sharing
http://www.vcfed.org/forum/showthread.php?17430-Pertec-ISA-interface-card&p=152911#post152911
https://museo.freaknet.org/en/recupero-dati-nastri-magnetici-del-computer-polacco-mera-400/
https://ecma-international.org/wp-content/uploads/ECMA-62_1st_edition_january_1980.pdf
https://github.com/jakubfi/ninetracklab
https://github.com/jakubfi/ninetracklab
Tuesday, May 14, 2019
Backplane "Mapper" (DG Nova, DCC D-116 & Entrex 480/Nixdorf 620)
This is a crazy project that I'm just muddling my way through with sheer ignorance and determination.
I want to test every connection in every slot of the backplane of Dominique's Entrex 480/Nixdorf 620, since it is the only known surviving system of its kind in existence, and then reverse engineer the thing from the center outward.
So, here's the backplane "adapter board" design (version 2)
Click to download the Gerber files version 3 by Alberto Medrano
Order this at 1.2mm thickness, NOT 1.6mm default. I did my first round at 1.6mm default, and the board was too thick to fit into the backplane card edge connectors.
And here's my concept schematic on how I'm going to use an Arduino (I know...can't I do better??!!!) to test each and every connection in each slot I plug the set into.
Yes, there are so many things wrong with it...I know...
Here's the Gerber files of my latest version by Alberto Medrano
And for the first time, I'm going to try to order these from JLCPBC
This is what I'm comparing against, and these are the only backplane schematics/charts that I have for any Entrex 480/Nixdorf620, DSS-116 or Data General NOVA system. Can anyone else find more on bitsavers, or elsewhere?
I want to test every connection in every slot of the backplane of Dominique's Entrex 480/Nixdorf 620, since it is the only known surviving system of its kind in existence, and then reverse engineer the thing from the center outward.
So, here's the backplane "adapter board" design (version 2)
Click to download the Gerber files version 3 by Alberto Medrano
Yes, there are so many things wrong with it...I know...
Here's the Gerber files of my latest version by Alberto Medrano
And for the first time, I'm going to try to order these from JLCPBC
This is what I'm comparing against, and these are the only backplane schematics/charts that I have for any Entrex 480/Nixdorf620, DSS-116 or Data General NOVA system. Can anyone else find more on bitsavers, or elsewhere?
Wednesday, May 8, 2019
Digital Computer Controls - D-116 16-Bit Computer Handbook - 1972
Well, since the Entrex 480 / Nixdorf 620 system clearly has a D-116 as it's processor, it seems that acquiring this manual was a priority...so we did!
Vintage Digital Computer controls - D-116 16-Bit Computer Handbook - 1972
For comparison, Dominique's Nixdorf 620 processor label
Saturday, March 23, 2019
DCC-116 Nova 800/1200 Clone on YouTube - with DG Nova ALL
https://youtu.be/E_1ExBFGtYE?t=872
And The Woz...discusses DG Nova
And I'm PRETTY sure that the THIS is the instruction set section that WOZ is talking about at 0:45, right in the context of what probably is the very same full brochure he is referring to...
Thursday, March 14, 2019
Nixdorf DSS 620 Service Manuals
eBay Seller vitesse1000 reports on 2019-02-26:
He was the seller of these 2 auctions. (And I was the buyer, of course...)
He was the seller of these 2 auctions. (And I was the buyer, of course...)
Nixdorf DSS 620 Computer Service Manual - Entrex Key-to-Disc
The use of Nixdorf 620 systems in [European] lottery coupon processing
The seller of these fantastic service manuals has provided his history working with these systems. We are all thankful that he remembers this, saved these images, and especially, the service manuals...thank you Brian!
Here is his own story, in his own words:
--------------------------------------------------------------------------------------------------------------------------
In the second
half of the last century, many European countries introduced national or
regional lotteries in order to raise funds to benefit good causes and
charities.
Coupons were
available to buy by the general public at agent locations such as tobacconists,
newsagents and other local stores. Each coupon had a unique machine-readable (magnetic
or optical fonts) serial number in a range of layouts depending on the games
offered by the lottery operator – could be simple games of chance e.g.
selecting 5 numbers out of 45, 6 numbers out of 49 etc. or based on skill and
knowledge such as predicting the results of soccer matches.
All of the
completed lottery coupons were returned to each lottery organisation’s central
processing centre by the selling agents on a weekly basis. At the centre the coupons
were microfilmed for security before passing through high speed document reader
/ sorters (up to 30 coupons per second / 108,000 per hour) in order to capture
the betting mark and serial number data of all the punters’ coupons, which was
then written to magnetic tapes.
Any coupons
with read errors, such as not enough or too many marks, missing or invalid (e.g.
failed check sum) serial numbers, were physically segregated by the reader /
sorter equipment.
The Nixdorf 620
Key to Disc systems were used for a range of processes but mainly to access the
rejected coupon data records from the magnetic tapes, load them to disc to
facilitate the manual correction / verification of the data by operators
visually checking each rejected coupon.
The corrected
data records were then merged with the previously correctly read data to
produce a master record of all coupons entering the pool that week. After the
drawing of the lucky balls for a straight lottery or the completion of the
soccer matches, the master record was then processed to produce winners lists
for the different classes of win and the printing of payout cheques to be sent
to the winners.
In the early 1970’s,
I was involved with the installation and commissioning of the reader / sorter
equipment and the Nixdorf 620 systems at the French lottery’s new computer
centre situated in the grounds of a chateau not far from Paris Charles de
Gaulle Airport. This lottery was originally setup to support French war injured
soldiers but subsequently became the French national lottery. Its data
processing operations were modeled on those of the highly successful Nordwestlotto,
based in the German state of Nordrhein-Westfalen.
Although I was
never directly involved with the German equipment, they also used Nixdorf 620’s
(and later 8870/6’s) for reject coupon correction / verification.
At around the
same time, the Massachusetts State Lottery introduced similar machine-readable
coupons and high speed reader / sorters. They would also have had a need for
reject coupon processing. Maybe they used the Entrex system???
The below images provide some visual reference to the above text.
Click each to enlarge, or click the "see maximum size" hyperlink below each image
620 installation at French lottery – 2 of the 3 main system racks and
printers
Wednesday, March 13, 2019
The Rest of All of Dominique's Pictures
Well, until I get them better sorted anyway, so please forgive the random order here.
Let's compare also with http://actingmachines.com/ovni.html
Sunday, January 27, 2019
Vintage Rare Entrex DG 8K Core Stack Memory Wincor Nixdorf Siemens Computer
This is probably and "archive of an archive". An eBay auction from years gone by, archived by "Worthpoint".
Based on context, I suspect that this was from one and the same seller who currently has a very similar board on eBay, and has for the past year or so: NRS1 (Richard DuBois).
I archive this here to keep this rare stuff documented somewhere, before it all disappears into obscurity:
Entrex 8K Core Memory Board from: 1971
8K Core Stack on 16 bit Memory Board
Nice Piece of Vintage Computer History!
This board measures 15" X 15"
A copy of the NOVA 16K Memory made by Data General
Pulled from a Entrex/Nixdorf 480 Computer Mini Computer
Entrex was bought out by Nixdorf Computer and Nixdorf was
merged to Siemens Nixdorf Informations systems than later split off to
Fujitsu Siemens Computers and later known as
Wincor Nixdorf .
44 YEAR OLD CORE MEMORY !!!
Collectors or Teaching Item
Sold As Is * No Returns * Not for use
You'll receive the item pictured - only have one!
Monday, January 7, 2019
Entrex Data/Scope Keystation Connector: Winchester Electronics MRE14S and MRS14P
Well, we finally figured out what this bizarre connector was, and to my astonishment,
they aren't quite as rare as I thought!
Winchester MRE14
Winchester MRS14
Continental 14-20
Gorn GM-14
GMCT Connector
Positronic GM14
Winchester MRE14
Winchester MRS14
Continental 14-20
Gorn GM-14
GMCT Connector
Positronic GM14
What a bizarre plug!
Here's where the cord comes out of the back of the Keystation. (I believe that this id-tag is for the Keystation's power supply, instead of for the terminal itself.)
Here's the back of the machine, where it plugs into:
And the backside of the boards that hold those female "sockets":
And how it connects on the inside of the "keystation" terminal
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