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Galaxy 1

The Gemini Galaxy range of computers were of "all British" origin, being manufactured by Gemini Microcomputers Ltd., Amersham, Bucks.

the Galaxy systems were built around the 80-BUS, specifically designed for the Z80 microprocessor. They had two Z80A processors, one acting as the CPU and the other running the 'programmable' video card (Called the IVC).

The video card memory was composed of: 2 KB Monitor ROM (SIMON), 2KB User workspace RAM (it was capable of holding user routines), 2 KB Screen RAM, 2KB character generator ROM, 2KB character generator RAM (programmable fonts). Numerous cards were available, like IEEE488 interface card, SASI floppy drive controller or colour graphics card.

YEAR      1983
KEYBOARD      Full stroke keyboard with numeric keypad
CPU      Zilog Z80A
CO-PROCESSOR      second Zilog Z80A running the 'programmable' video card (Called the IVC).
RAM      64 KB dynamic
VRAM      2 KB
ROM      2 KB Phantom Bootstrap ROM
TEXT MODES      80 x 25
GRAPHIC MODES      160 x 75
COLORS      Unknown
I/O PORTS      Centronics, RS232, Light Pen, Tape
BUILT IN MEDIA      Two 5.25'' disk-drives
OS      CP/M 2.2 and MP/M

Thanks to for the specification

Our model Galaxy 1 together with the keyboards has a serial number of 00196.

Manufacturer: Gemini
Date: 1983

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Magazines RELATED to Galaxy 1 in our Library

Item Manufacturer Date
Computer Age - September 1980 Computer Age Sep 1980
Personal Computer World - October 1982 Oct 1982
Practical Computing - July 1983 Jul 1983
Windfall July 1983 Windfall Jul 1983
CRASH - No 72 January 1990 Jan 1990
Personal Computer World - May 1995 May 1995
Edge - Issue 159 - February 2006 Future Publishing Feb 2006
Edge - Issue 174 - April 2007 Future Publishing Apr 2007
NGamer - May 2007 Future Publishing May 2007
Edge - Issue 180 - October 2007 Future Publishing Oct 2007
NGamer - December 2007 Future Publishing Dec 2007
NGamer - Christmas 2007 Future Publishing Dec 2007
Edge - Issue 183 - Christmas 2007 Future Publishing Dec 2007
NGamer - February 2008 Future Publishing Feb 2008
Edge - Issue 185 - February 2008 Future Publishing Feb 2008
Edge - Issue 191 - August 2008 Future Publishing Aug 2008
Edge - Issue 204 - August 2009 Future Publishing Aug 2009
Edge - Issue 206 - October 2009 Future Publishing Oct 2009
Edge - Issue 213 - April 2010 Future Publishing Apr 2010
Edge - Issue 215 - June 2010 Future Publishing Jun 2010

Other Systems Related To Galaxy 1:

Item Manufacturer Date
Enigma - Galaxy 2 Computer Gemini Microcomputers 1983

This exhibit has a reference ID of CH11357. Please quote this reference ID in any communication with the Centre for Computing History.


Galaxy 1

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