Data General Nova, Eclipse, MV and AV

Welcome

Welcome to my Data General Corporation (DGC) Preservation and Restoration site. The aim of this site is to preserve and restore systems that were designed and built by Data General Corp and whilst doing so provide as much information on those systems, peripherals, software and documentation as possible. If you are considering scrapping or sending anything Data General (DG) related for disposal to a salvage or recycling please consider sending it for preservation instead. You can contact me here if you have any Data General Systems, Peripherals, Displays, Documents, Manuals, Cables, Terminals, Parts, Spares, Floppys or Tapes you wish to dispose of.

Data General Systems were used across the world – Not only were they sold directly to end users by Data General themselves but they were also embedded into many industrial, military and commercial systems by OEM’s. I cut my electronics teeth using Data General systems (read more in about section) and I have very fond memories of these systems which is why I recently decided to buy and restore my first system which happens to be an MV/9800 – one of the last 15″ form machines made by Data General.

The site is very much work in progress so check back often to see how the projects are progressing.

Latest News
Data General DTOS Rev 8.1
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DG DTOS way back when……..

Data General DTOS 8.1 on cassette. Here is a blast from the past – anyone remember loading DTOS from cassette tape? This is way before my time but I suspect this was the next stage on from Paper Tape before 9 Track Mag Tape became prevalent. VIP John (USA) has very kindly entrusted me with

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Data General Intergrated Circuis VLSI
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Data General Corp VLSI Ident

This Data General Corporation Integrated Circuit is used on an Intelligent Lan Controller (ILC) board which came with my Eclipse MV/9800 the PCB also has an Intel 82586 IEEE 802.3 co-processor. Does anyone recognise the 48pin DIP labeled A01 and have any information on it and/or the PCB? The PCB part number is 005-039526 –

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Reaching Out

With lock-down in place here in the UK restoration work has stalled as systems are either at my place of work or in storage both of which I am unable to attend. So in order to stem the withdraw symptoms I have been continuing work on an extender for the Nova/Eclipse bus. I am about

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Data General Desktop DG20
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Voyage en France

A recent day trip to France has returned (for restoration and preservation) and following items: Data General MV2000DC Mk 1 Data General MV2000DC Mk 2 Data General Desktop Model 20 Along with: Circa 150 DG Floppy Disks Circa 150 DG Tapes for MV2000 inc Microcode for MV1000, MV1400 and MV2000 Various DG20 Spares (PCB’s, Disks,

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AViiON Software CD SCM
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DG AViiON Software Part 2

More AViiON related media arrived this morning including: AViiON SCM Update Media Rev 17.00 Prom 4.4.0 (CD)AViiON ix86 In-Service Diagnostics Rev 8.0 (CD)AViiON m88k In-Service Diagnostics Rev 8.0 (CD)AViiON System Diagnostics Rev 12.40 (CD)DG/UX Release 4.20MU05 Documentation (CD)DG/UX OS with X for Intel Release 4.20MU05 (CD)DG/UX Maintenance Update 5.4R3.00.MU05 (Tape)DG/UX OS with X for 88k

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Data General MPT/100 Main Board
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DG MPT/100 – Update 1

I have finally found the time to start work on the restoration of the MPT/100. I have removed the Main PCB and started the long process of component inspection, cleaning and component testing. The picture shows the area previously covered by the brightness potentiometer and its mounting hardware. This was the first component to be

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Data General Floppy Disks
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DG One Floppys

Brian contacted me recently after stumbling across my site. His father (Roland Quillia) was with DG for over 20 years (70’s – 90’s) and mainly oversaw the Westboro and Southboro Facilities in Massachusetts but had responsibility across the US. Brian has fond memories of being inside the DG headquarters many times.  He has also very kindly

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AViiON Diagnostics
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DG AViiON Software

Suprise delivery this week from the guy I acquired the AViiON 5500 from, he found a keyboard, some further documentation and two tapes one for DG/UX 5.4.2 and AViiON Diagnostics Rev 13 (12.60).  You can take a look at the inside of this machine and follow its restoration by clicking here.

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Data General PCB Delivery
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The Shed

Having had another batch of Data General PCB’s delivered today I thought it best to start to take stock of what I have ‘in the shed’ just in case something is of interest to someone but more importantly to ensure I don’t acquire something I already have (my memory is not what it used to

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Data General Desktop Generation
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Data General Desktop

Another new project has landed today – a Data General Desktop.  Having had a quick look inside it appears to be a DG10/SP model with Winchester, Floppy and Tape. I believe it is capable of running CP/M, RDOS or AOS.  You can take a look at the inside of this machine and follow its restoration

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Data General AViiON AV5500
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DG AViiON AV5500

When I embarked on this hobby I made a pact with myself to stick to the ‘proprietary‘ Data General CPU’s e.g. the native Nova/Eclipse and MV machines, however recently I stumbled across an Motorola 88110 based AViiON server and intrigue got the better of me when the owner confirmed that it had a full set of

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Data General microNova I/O Cable and Terminator
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DG microNova I/O

One thing that has genuinely surprised me is how much ex Data General people want to help with physical items for a restoration and with how much information they remember about kit they worked on many years ago! VIP Alexandre made contact with me completely out of the blue and offered to send me the

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Dg Fiche Set
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Data General Microfiche

As well as the Pharaoh (Data General One) VIP John (USA) also very kindly gifted me a complete set of Data General Microfiche covering up to the early MV’s along with their peripherals. This is an incredibly useful source of technical information and will be very well looked after.  Because of this I have invested

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Data General Pharaoh Manual
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Data General One (Pepi II)

DHL delivered a very nice surprise to me today courtesy of VIP John (USA). John has very kindly entrusted me with his Data General Pharaoh (DG Model One 2-T) from his days with Data General Field Engineering. I have given it the name Pepi II. This example is in pristine cosmetic condition and has clearly

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Data General Field Engineering Password
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SCP FE Passwords

Both my MV/9800 and MV/9600 CPU’s have a Field Engineering (FE) SCP command which allow access to the Error Log for the PCB. So if a PCB fails a self-test (as my MV/9800 does) the only way to obtain detailed information about the error is to access the log. In addition the FE area also

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DG MPT Desktop Schematics
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Data General MPT Schematics

I am pleased to report that I have managed to obtain a set of schematics for the MPT series Desktops. VIP Lothar located a section on the MPT in his fiche collection and I was able to have these converted to PDF. This will make any repair on the MPT much easier and in addition

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crater en masse
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Crater en masse

I had a call a couple of days ago to say that the Data General 6220 5Mb Winchester Chassis was ready at the shot blasters. On collection I was amazed to see just how much damage the rust had done to the chassis. With all of the oxidant removed the chassis revealed a lunar type environment

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Data General Dasher Emulator
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Data General Dasher Emulator

I came across this Dasher emulator ‘DasherG’ which has been written by Stephen Merrony and is available on GitHub; https://github.com/SMerrony/DasherG  I have switched to this emulator as it will allow me to provide much better quality screenshots and video for this site rather then taking photographs of my D464 console screen! Steve is a great guy

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Recent Visitor Comments
  • Jos Dreesen Voyage en France - I have an DG MP/200 and am looking for schematics etc… Powersupply is tested OK, but no prompt comes up,…
  • admin Reaching Out - Hi Lothar, Yes you are right; I must have been tired that night 🙂 I have made pads for the…
  • Lothar Schroeder Reaching Out - Hi Sean, if your picture shows the top side of the extender, the backplane description ‘A’ and ‘B’ has to…
  • admin Voyage en France - Thanks for your comment Michel, perhaps my DG20 was one of them? You don’t have a spare PSU in a…
  • Michel Voyage en France - De 1985 à 1986 j’ai utilisé un MP 200 qui a été Upgradé en S20 de 1986 à 1995 j’ai…
  • HULL Patrick Voyage en France - Je suis heureux de savoir que les matériels sont arrivés à bon port. Et aussi ravi de la compétence et…
  • Jojo Terminator? - IMG_2484. Isn’t that the same as the SCSI coupler/terminator used by Apple in their docking station for the Duo?
Data General (DG) History

Data General Corporation (DGC) was founded by several engineers from Digital Equipment Corporation who were frustrated with DEC’s management and left to form their own company. The chief founders were Edson de Castro, Henry Burkhardt III, and Richard Sogge of Digital Equipment (DEC), and Herbert Richman of Fairchild Semiconductor. The company was founded in Hudson, Massachusetts in 1968.

Edson de Castro was the chief engineer in charge of the PDP-8, DEC’s line of inexpensive computers that created the minicomputer market. It was designed specifically to be used in laboratory equipment settings; as the technology improved, it was reduced in size to fit into a 19-inch rack. Many PDP-8s still operated decades later. De Castro, convinced he could do one better, began work on his new 16-bit design.The result was released in 1969 as the Nova.

To read more visit the Wikipedia page (where the above text was found). The Wikipedia page for Data General can be found here

de-Castro President Data General with DG MPT
Edson de Castro with DG MPT desktop in background

Data General Advertising: 

Data General Systems manufactured between 1969 and 1999: 

Nova, SuperNova, Nova 1200, Nova 800, Nova 840, Nova 2, Nova 3, microNOVA, Nova 4, Eclipse S140, Eclipse S100, Eclipse S200, Eclipse C300 Eclipse S230 Eclipse C330, Eclipse S130, Eclipse S250, Eclipse C350, Eclipse C150, Eclipse S130, Eclipse M600, Eclipse S/20 (microECLIPSE), Eclipse CS20, Eclipse CS40, Eclipse CS60, Eclipse S120, Eclipse S280, Eclipse C380, Eclipse DG500, Eclipse MV/8000 (Eagle), Eclipse MV/6000, Eclipse MV/4000, Eclipse MV/10000, Eclipse MV/2000, Eclipse MV/7500, Eclipse MV/2500, Eclipse MV/20000, Eclipse MV/7800, Eclipse MV/15000, Eclipse MV/40000, Eclipse MV/1000, Eclipse MV/1800, Eclipse MV/3000, Eclipse MV/5000, Eclipse MV/30000, Eclipse MV9600, Eclipse MV/60000, Eclipse MV9800, Clariion Disk subsystems and Motorola and Intel based Aviion systems before being sold to EMC in 1999.

These systems ran various operating systems, high level languages and applications including:
DOS, RTOS, RDOS, DTOS, DG/DOS, MP/OS, AOS, AOS/VS, AOS/VS II, MV/UX, DG/UX, XODIAC, TCP/IP, FORTRAN IV, FORTRAN V, FORTRAN 77, COBOL, INTERACTIVE COBOL, BUSINESS BASIC, EXTENDED BASIC, MP/BASIC, MP/PASCAL, SP/PASCAL, DG/L, RPG II, PL/I, DG/DBMS, DG/SQL and CEO.

datageneral.uk

This site was created to help preserve the history of Data General Systems by acquiring (thru salvage, gifting, purchasing or trading) and restoring those systems. In doing so we can hopefully create an informative reference for each item that we acquire for future reference, from complete systems, peripherals, PCB’s, spares all the way down to the cables used to connect items together.

We are based in Oxfordshire, United Kingdom and are able to advise of the best course of action should you have a Data General System or associated equipment or software that requires disposal. We can also advise on and provide data destruction on those systems whilst retaining (where possible) the physical hardware for preservation. We can also (where required) physically remove disk storage for destruction or provide data destruction certificates.  Please use the Contact page in the menu above or click HERE

This site (datageneral.uk) is unrelated to any entity who may have previously or currently owns any Data General Trademark or Copyright. The information on this site is made available for enthusiasts use only.

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