I’ve been working on this site and the following changes have been made:

10 November 2017

  • Info on G811 Processor board corrected updated.
  • Added some detail of the SIMON boot EPROM. (Updated 11/11/17 and 12/11/17)

3 November 2017

  • Added more info on NASBUS & 80-BUS

31 October 2017

  • Added GM832 SVC hardware manual. (Thanks Steve!)
  • Added GM821 Parallel keyboard.
  • Added info on the NASBUS.

23 October 2017

  • Added more info, including circuit (thanks Steve!) on the GM811 processor card.
  • Added info on RP/M (thanks again Steve! πŸ™‚ )

1 July 2017

  • Added GM808 EPROM programmer

16 June 2017

  • Updated the Nascom-1 page with more photographs.
  • Additional photo added to RAM-B Board.
  • Manual added for the Henelec Prom-Prog.

13 June 2017

  • GM860 EPROM Programmer added.
  • New photos for Henelec EPROM programmer.
  • Better copy of Nascom 8A supply manual.

12 June 2017

  • New photos for Nascom-1, Nascom-2 & Nascom-IO board.
  • New photo & update to G812 IVC card.
  • New photo for G848 serial card.
  • Henelec EPROM programmer info updated.
  • Bigger pictures in Notes on Video Systems

11 June 2017

  • Updated G833 info.
  • Minor updates to the History section.
  • Updates to The Hobbit info.

9 June 2017

  • Added EPROM & FPCS boards
  • Many photos replaced with better quality ones.
  • Started a library of various manuals.

8 June 2017

  • Henrys Radio Nascom-1 brochure added.
  • Much more info about the Nascom keyboard.
  • Restored a lot of Gemini specific pages to this site that had gone missing in the move 6 years ago. πŸ™‚
  • Added a link to 80bus regarding info on Gemini cards.
  • More info on the 80-Bus added.

Found thisΒ link to youtube about a GM925 computer – one that I didn’t know about. It is built using the GM813 processor, GM832 SVC card and GM849 FD drive card.

Added this page. πŸ™‚