Saturday, April 1, 2017

Data General Nova 4 Manuals

Manuals which came with two Data General Nova 4 systems.  Drawings will require a B size scanner.

Saturday, March 4, 2017

A604F Flip Chip Module DEC 2 Bit D-A Converter

The A604 revision F is a 2 bit D-A converter

Difference from Revision E on Vince Slyngstad's site is a date of 2/68, and a bit of trace going off the edge of the board from what is probably one of the grounds.

Will verify the components and etch and update.

Vince's A logic page is here.

Monday, December 19, 2016

One Inch TV sets

I have two 1" tv sets in the collection, one Sinclair, and one Panasonic Travelvision.

Panasonic Travelvision

This youtube video shows a panasonic like the one I have.

1982 Panasonic Travelvision

 Sinclair TV

A bit of information from another site.

Model: Micro Vision MTV1 MTV1A - Sinclair Radionics Ltd.
Modern plastics (no Bakelite or Catalin) 
Very small Portable or Pocket Set (Handheld) < 8 inch. 
Sinclair MTV1 (MTV1A);
First European pocket b/w TV set, 2" Telefunken CRT;
Multistandard electronic VHF-/UHF tuner with standards CCIR B/C/G/M-(USA)/I-(UK); 
Built in accucells + extern 6 V/12 V. Telescopic antenna and UHF dipol.
There were a sticker with FTZ number and "MTV1A" type in german language on MTV1 labeled units - technical differences unknown (probably disconnected ext. antenna in?). 
Price first year of sale  $400.00

Sunday, November 20, 2016

Friday, November 18, 2016

Data General Nova 3 CPU board

Nova 3 CPU board from Nova 3 system

overall view of the board

View of an grouping of 24 pin chips
 The 4 chips with 2 16 pin DIPs between them are 74S181 4 bit ALU's so this is a '181 processor for math

Grouping of pals on right side of board

right side edge card connector.  shows some more pals

Grouping of 8 pin dips on the left side, top of photo is left edge card

ECO tag on the bottom of the board

IC's between the 8 pin grouping mentioned on left side of board, and the ALU photo

Datum controller 4091 for Diablo 30 on Data General Nova (3)

The Datum controller in the DG Nova 3 was a Datum 4091 optioned for the Diablo 30 drive.

Looks like acquiring one of those, or an emulator may be in order to gen up a working system.

Option sticker

Part number 4091-NDC

Datum logo on component side etch

Clipping about the Datum controllers from Computer World

Bitsavers link to Datum catalog mentioning the controller subsystem.