80-Bus

Gemini 80-Bus Resource

Resources have Moved!

All disk images, software, firmware, magazines, documentation and articles have now been incorporated into the Gemini GIT repository located at https://github.com/johnnewcombe/gemini. Each folder in the repository should have a README file describing what is there.

Enjoy!

Articles

The following is a list of articles that may be of particular use to the Gemini owner. Please note that the complete set of IMC News, 80-Bus News and Scorpio are available within the above mentioned repository.

Computer Press

  • Personal Computer World (Oct 1982)
    • Gemini Galaxy 1
  • Practical Computing (Nov 1982)
    • Galaxy 1
  • Computing Today (April 1983)
    • Gemini Galaxy System Review
  • Practical Computing (Jul 1983)
    • Galaxy 3
  • Personal Computer World (May 1986)
    • Galaxy Enigma

INMC 80 News

  • INMC 80 News (Issue 5)
    • Video Routine – Software for the Gemini Video Card Page 59
    • (More INMC Articles to be added shortly)

80 Bus News

  • 80-Bus News (Volume 1, Issue 4)
    • Gemini Multiboard Advert Page 27
    • Gemini GM822 RTC Review Page 29
    • Remote Terminals and the Galaxy Page 45
  • 80-Bus News (Volume 2, Issue 1)
    • Interrupt System of the Z80 Page 6
    • Understanding CP/M – Customising your BIOS Page 20
    • MAP 80 Ram board Page 29
    • RP/M, MAP256, SYS, Virtual DIR (R Beal Column) Page 37
    • 80-Bus + UCSD Page 50
  • 80-Bus News (Volume 2, Issue 2)
    • A Change of Tactics (CPZ, 40-80 conversion and more) Page 11
    • Gemini Multinet (Random Rumours) Page 51
  • 80-Bus News (Volume 2, Issue 3)
    • Wordstar for the Gemini IVC Page 11
    • 80-Bus Port Map Page 26
    • Large RAM Systems Using the MAP Card Page 37
    • Serial Interface Problems Made Easy Page 38
    • GM812 IVC Hardware Bug Page 50
  • 80-Bus News (Volume 2, Issue 4)
    • Colour Cards Page 5
    • SYS is Dead, Long Live? Page 20
    • 80-Bus IO Map Part 2 Page 21
    • RAM Disks Page 35
  • 80-Bus News (Volume 2, Issue 5)
    • Review of the Gemini Galaxy 2 Page 39
  • 80-Bus News (Volume 2, Issue 6)
    • Disk Drive Compatibility Page 14
    • Installing an 8 inch Drive with the GM829 Page 29
    • Video Output Stages Page 44
    • Mixed 5.25 inch and 8 inch Drives on the GM829 Page 45
  • 80-Bus News (Volume 3, Issue 1)
    • CCPZ and BDOSZ Page 9
    • SVC Board Page 20
    • GM809, GM829 Compatibility/Upgrading (using 8 inch mode on 5.25 inch drives) Page 35
    • Review of Compass, ZAP and Raven Assemblers Page 48
    • GM888 8080 Board Page 51
  • 80-Bus News (Volume 3, Issue 2)
    • Gemini GM860 EPROM Programmer Review Page 31
    • An insight into the Gemini IVC and SVC Part 1 Page 43
  • 80-Bus News (Volume 3, Issue 3)
    • Gempen/DiskPen a Review of the New Improved Version Page 4
    • An insight into the Gemini IVC and SVC Part 2 Page 16
    • The 80-Bus 800 Series Page 38
  • 80-Bus News (Volume 3, Issue 4)
    • Henry’s CCPZ, BDOSZ and Utility Disks Page 22
  • 80-Bus News (Volume 3, Issue 5)
    • Giant Intelligent Print Buffer for Gemini CPU Cards Page 9
    • GSX The Graphics interface Page 19
    • Lost Characters in CP/M Page 28
    • Gemini Cursor Page 31
  • 80-Bus News (Volume 3, Issue 6)
    • RP/M Version 2.3 Page 9
    • Interrupt Driven Printer for Gemini 2 Page 38
    • Put a Real Time Clock in your CBIOS Page 43
  • 80-Bus News (Volume 4, Issue 1)
    • An IVC Problem Page 4
    • Disk Skew and Deblocking (part of the DH Bits article) Page 9
    • Review of the Prestel Terminal Program Page 26
  • 80-Bus News (Volume 4, Issue 2)
    • The Gemini GM870 Modem Page 21
    • Gemini Bios Version 3.2 Page 25

Scorpio News

  • Scorpio News (Volume 1, Issue 1)
    • Disk Formats and CP/M Disk Routines Part 1 Page 25
    • Review of the 2Mb Upgrage for the Gemini GM833 Page 37
    • Prestel on Pluto Page 39
    • Review of the MAP-80 Video/Floppy Controller Page 42
    • Making CP/M More Friendly (CCPZ, ZCPR2, BDOSZ, CBIOS) Page 51
  • Scorpio News (Volume 1, Issue 2)
    • The ZCPR3 System PArt 1 Page 20
    • Disk Formats and CP/M Disk Routines Part 2 Page 40
    • MAP-80 Multipurpose Interface Review Page 44
    • GM809 Fast Steper Page 46
  • Scorpio News (Volume 1, Issue 3)
    • SVC Graphpac, Alias GM575 Page 8
    • Gemini Maintenance Memorandum Page 10
    • Disk Formats and CP/M Disk Routines Part 3 Page 11
    • The ZCPR3 System Part 2 Page 25
    • A Visit to IO Research Page 37
    • Upgrading a GM813 to 246K Page 42

Magazines

The complete set of IMC News, 80-Bus News and Scorpio are available below.

Links

At the moment this is just a list of my Gemini related bookmarks, I will sort these out and add some descriptions soon…