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---
title: Gemini 801
categories:
- Computers
types:
- Professional Computer
origins:
- United Kingdom
years:
- '1981'
cpus:
- 2 x Zilog Z80A
params:
name: '801'
image: /media/museum/photos/gemini_801_system_1.jpg
company: /companies/gemini
company_name: Gemini
specs:
- label: NAME
value: '801'
- label: MANUFACTURER
value: Gemini
- label: TYPE
value: Professional Computer
- label: ORIGIN
value: United Kingdom
- label: YEAR
value: '1981'
- label: KEYBOARD
value: Full stroke 59 keys
- label: CPU
value: 2 x Zilog Z80A
- label: SPEED
value: 4 MHz
- label: RAM
value: 64 KB
- label: VRAM
value: Unknown
- label: ROM
value: Unknown
- label: TEXT MODES
value: 80 chars x 25 lines
- label: GRAPHIC MODES
value: 512 x 256 dots
- label: COLORS
value: Monochrome
- label: SIZE / WEIGHT
value: Unknown
- label: I/O PORTS
value: 2 x Parallel Centronics, Serial RS232, Cassette tape, Light Pen
- label: BUILT IN MEDIA
value: Two 5''1/4 disk-drives 315 KB each
- label: OS
value: CP/M and MP/M
- label: POWER SUPPLY
value: Built-in power supply unit
- label: PRICE
value: £1420
tabs:
- links
links:
- title: Gemini 80-Bus Resource
url: https://glasstty.com/wiki/index.php/Gemini_80-Bus_Resource
text: THE website to visit for all Gemini information !
- title: NASCOM.info
url: https://nascom.wordpress.com/about/
text: A treasure for all things NASCOM related, included Gemini
- title: The Nascom home page
url: http://www.nascomhomepage.com/
text: All you ever wanted to know about Nascom systems!
comments:
- author: John Newcombe (United Kingdom)
date: Sunday 9th June 2019
text: |-
I am very keen to gather and archive as much Gemini software and documentation as I can. These were great machines, however, very little seems to have been kept over the years.
If you can help me preserve this stuff for future generations, please get in touch via john.newcombe@me.com or this forum.
oc_id: 127
source:
url: https://web.archive.org/web/20230607112058/http://www.old-computers.com/museum/computer.asp?c=127
date: '2023-06-07'
---
Gemini was the company that rose from the ashes of the demise of [Nascom](/museum/lucas-nascom-3/) (at the same time that Lucas bought the Nascom name). The computer was thus designed by the people who initially set up Nascom.
In fact, it tooke advantage of some of the later ideas floated around the Nascom 2. Although it was available as a series of single boards and plug-in modules for the 'kit' enthusiasts, it was mainly sold as a complete unit with typewriter style keyboard and dual floppy disc drive. 64 KB of user RAM was provided as standard and the computer came with two Z80A processors, one driving the video, the other doing all the rest.
Software provided included a CP/M operating system and a 24 KB Microsoft BASIC interpreter
<table> <tr> <td></td> <td>We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.</td> <td></td> </tr> </table>