NORD-1 Serial 47: Difference between revisions

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(Updated some information and added more pictures)
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[[Image:Nord-1 snr-47 Door open.jpg |300px | thumb | [[NORD-1]] with the door open. ]]
[[Image:Nord-1 snr-47 Door open.jpg |300px | thumb | [[NORD-1]] with the door open. ]]


The system is equipped with 24 kword of core memory and 8 TTY interfaces. There seems to be an interface to an SMD cartridge disk too.
The system is equipped with
* 32 kword of core memory
* 9 TTY interfaces
* A cartridge disk interface
* An I/O channel (connectors I/O channel data in, I/O channel data out, I/O channel control)
* Asynchronous modem
* Centronics printer interface
* Facit punch 4070 interface
* Digitronics tape reader interface


Some cards seems to be missing and minor damages
Some cards seems to be missing and minor damages
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   -- 26 : 185,7 Data ch. M data out
   -- 26 : 185,7 Data ch. M data out
     There are one more of card 185 in the machine, so no problem to reproduce.
     There are one more of card 185 in the machine, so no problem to reproduce.
There are a few power supplies missing too but two remains. Probably easy to reproduce.
  Some switches are broken on the front panel.
  Some switches are broken on the front panel.
==Core memory==
[[Image:Nord-1 snr-47 Core memory rack.jpg |300px | thumb | Core memory ]]
The core memory was made by '''Cambridge Memories INC, Newton, Massachusetts''' or '''CMI''', the model name is EXPANDACORE 18. The memory have two or four channels in to it so it is possible to build a multi CPU machine by connecting two (or maybe more) to the same memory to pass messages between them.
The core memory is built up from modules. One rack can hold four controllers and eight memory planes of 4 kword each. It looks like the original configuration only came with 24 kword but later on two additional memory planes were added.


==Current status==
==Current status==
Line 42: Line 54:
Image:Nord-1 snr-47 At home.jpg |Finally at home after a 1000 km journey.
Image:Nord-1 snr-47 At home.jpg |Finally at home after a 1000 km journey.
Image:Nord-1 snr-47 teletype.jpg |ASR33 terminal that came with the machine.
Image:Nord-1 snr-47 teletype.jpg |ASR33 terminal that came with the machine.
Image:Nord-1 snr-47 Interface connectors.jpg |Connectors with name plate.
Image:Nord-1 snr-47 Core memory rack.jpg |The core memory rack.
Image:Nord-1 snr-47 Wiring loom Back of CPU.jpg |Wiring loom back of the CPU, shelf C and D.
Image:Nord-1 snr-47 Front Small PS.jpg |Front of small power supplies.
Image:Nord-1 snr-47 Back Small PS.jpg |Back of small power supplies.
Image:Nord-1 snr-47 Power Supplies.jpg |Main power supplies.
</gallery>
</gallery>


[[Category:Individual_systems]]
[[Category:Individual_systems]]

Revision as of 10:29, 3 July 2016

NORD-1 Serial number 47 was given to me by the school in Gjövik, Norway in the summer of 2016. I think it's been at the school for all of it's life since the only inventory labels on it is from the school. The only documentation surviving is the lists of cards on the inside of the front door. They give a date of summer 1972 as the build date.

NORD-1 with the door open.

The system is equipped with

  • 32 kword of core memory
  • 9 TTY interfaces
  • A cartridge disk interface
  • An I/O channel (connectors I/O channel data in, I/O channel data out, I/O channel control)
  • Asynchronous modem
  • Centronics printer interface
  • Facit punch 4070 interface
  • Digitronics tape reader interface

Some cards seems to be missing and minor damages 

Shelf D :
* Missing cards on position 27 and 28.
 -- 27 : 113 I Card reader contr.
   I have no drawings or extra cards of this one, can be hard to reproduce.
 -- 28 : 179 Punch buffer
   There is a drawing of this card in the manuals I got from Tingo,
   it should be possible to reproduce.
Shelf E :
* Missing card on position 20.
 -- 20 : 195 Duplex start stop buffer for TTY 6
   There are several cards of this type in the machine, so no problem to reproduce.
Shelf F :
* Missing cards on position 25 and 26.
 -- 25 : 185,8 Data ch. M data in
 -- 26 : 185,7 Data ch. M data out
   There are one more of card 185 in the machine, so no problem to reproduce.
Some switches are broken on the front panel.

Core memory

Core memory

The core memory was made by Cambridge Memories INC, Newton, Massachusetts or CMI, the model name is EXPANDACORE 18. The memory have two or four channels in to it so it is possible to build a multi CPU machine by connecting two (or maybe more) to the same memory to pass messages between them. The core memory is built up from modules. One rack can hold four controllers and eight memory planes of 4 kword each. It looks like the original configuration only came with 24 kword but later on two additional memory planes were added.

Current status

The system resides in the ND-Collection in Umeå. It is not operational yet but there is good hope that I will be able to restore it to running status.

Plans

The system will be put in working order some time in the future. First it will be documented.

Gallery

  • Picking up a NORD-1 in Gjövik.

  • The front door opened.

  • Front panel with broken switches.

  • Logo in cast aluminum.

  • Serial number plate.

  • Early logo before the name change to Norsk Data AS.

  • Wiring loom at the back of shelf E and F.

  • Top of core memory, thin core wires behind the resistors.

  • Finally at home after a 1000 km journey.

  • ASR33 terminal that came with the machine.

  • Connectors with name plate.

  • The core memory rack.

  • Wiring loom back of the CPU, shelf C and D.

  • Front of small power supplies.

  • Back of small power supplies.

  • Main power supplies.

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