---
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
  forum_thread: 140
  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!
  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>