---
title: OHIO Scientific Superboard II
categories:
- Computers
types:
- Home Computer
origins:
- U.S.A.
years:
- '1978'
cpus:
- '6502'
params:
  name: Superboard II
  image: /media/museum/photos/ohiosc_superboardii_system_2.jpg
  company: /companies/ohio-scientific
  company_name: OHIO Scientific
  specs:
  - label: NAME
    value: Superboard II
  - label: MANUFACTURER
    value: OHIO Scientific
  - label: TYPE
    value: Home Computer
  - label: ORIGIN
    value: U.S.A.
  - label: YEAR
    value: '1978'
  - label: BUILT IN LANGUAGE
    value: OSI BASIC interpreter
  - label: KEYBOARD
    value: Full stroke 50 keys
  - label: CPU
    value: '6502'
  - label: SPEED
    value: 1 MHz (could be overclocked to 2 MHz)
  - label: CO-PROCESSOR
    value: None
  - label: RAM
    value: 4 KB expandable to 8 KB on board
  - label: VRAM
    value: 1 KB
  - label: ROM
    value: 8 KB (OSI BASIC + Monitor)
  - label: TEXT MODES
    value: 16 to 48 chars. x 16 lines
  - label: GRAPHIC MODES
    value: None, but 128 graphic characters
  - label: COLORS
    value: Monochrome
  - label: SIZE / WEIGHT
    value: unknown
  - label: I/O PORTS
    value: Tape recorder and printer ports
  - label: BUILT IN MEDIA
    value: None
  - label: POWER SUPPLY
    value: External 5V power supply unit
  - label: PRICE
    value: $200 assembled
  tabs:
  - photos
  - adverts
  - links
  - docs
  forum_thread: 841
  photos:
  - title: SYSTEM
    subtitle: ''
    text: |-
      **(1)** 4 KB RAM expansion area. All of the board RAM chips are 2114 (1K \* 4 bits static RAM)\
      **(2)** 4 KB main memory area\
      **(3)** 6502 processor\
      **(4)** Expansion connector (40 pin socket)\
      **(5)** ACIA 6850 chip (Asynchronous Communication Interface Adapter)\
      **(6)** Monitor ROM chip\
      **(7)** BASIC ROM chips\
      **(8)** Video RAM chips (2x2114 not installed)\
      **(9)** Characters generator ROM chip\
      **(10)** Cassette interface connector and circuitry
    image: /media/museum/photos/ohiosc_superboardii_system_1.jpg
  - title: CLOSE UP
    subtitle: ''
    text: ''
    image: /media/museum/photos/ohiosc_superboardii_closeup_1.jpg
  adverts:
  - title: FRENCH AD (JAN. 1980)
    subtitle: ''
    text: '"Right now, your computer for today"'
    image: /media/museum/pubs/ohio_superboard2_pub_electronic-jl_1.jpg
  - title: US ADVERT (SEPT. 1979)
    subtitle: ''
    text: ''
    image: /media/museum/pubs/ohioscientific_superboardii_pub-sept-1979_1.jpg
  links:
  - title: Web Wiz CAPTCHA
    url: http://www.webwizcaptcha.com
    text: ''
  docs:
  - title: SUPERBOARD II / CHALLENGER 1P - USERS MANUAL
    url: null
    cover: /media/museum/docs/couvs/challenger_user-manual.jpg
    text: |-
      **SUPERBOARD II / CHALLENGER 1P - USERS MANUAL**\
      written by Ohio Scientific

       compiled/archived by David Wilson\
       type of document : PDF\
       size : 2,7 MB\
       source : www.old-computers.com
  - title: THE 8K BASIC-IN-ROM - REFERENCE MANUAL
    url: null
    cover: /media/museum/docs/couvs/doc_ohio-scientific_osi-basic.jpg
    text: |-
      **THE 8K BASIC-IN-ROM - REFERENCE MANUAL**\
      written by Ohio Scientific

       compiled/archived by David Wilson\
       type of document : PDF\
       size : 576 KB\
       source : www.old-computers.com
  - title: CHALLENGER 1P - TECHNICAL REPORT
    url: null
    cover: /media/museum/docs/couvs/challenger-1p_technical-report.jpg
    text: |-
      **CHALLENGER 1P - TECHNICAL REPORT**\
      written by Ohio Scientific

       compiled/archived by David Wilson\
       type of document : PDF\
       size : 1,4 MB\
       source : www.old-computers.com
  - title: THE CHALLENGER CHARACTER GRAPHICS REFERENCE MANUAL
    url: null
    cover: /media/museum/docs/couvs/challenger_characters-graphics-reference-manual.jpg
    text: |-
      **THE CHALLENGER CHARACTER GRAPHICS REFERENCE MANUAL**\
      written by Ohio Scientific

       compiled/archived by David Wilson\
       type of document : PDF\
       size : 1,3 MB\
       source : www.old-computers.com
  related:
  - /museum/ohio-scientific-challenger-1p
  - /museum/ohio-scientific-challenger-4p
  - /museum/ohio-scientific-challenger-ii
  - /museum/ohio-scientific-challenger-iii
  oc_id: 860
  source:
    url: https://web.archive.org/web/20230331055939/http://www.old-computers.com/museum/computer.asp?c=860
    date: '2023-03-31'
---

The Superboard II, also called **Model 600**, was quite the same board as the british clone [Compukit UK-101](/museum/compukit-uk-101/).

It came in only ready built version and did not featured neither power regulation on board - User had to build or buy a 5V external power supply - nor RF modulator to display on a standard TV, but only a composite video output.

A 40 pin IC socket allowed an expansion board and OSI bus to be connected, giving access to memory expansion (up to 64 KB) and floppy drive controller.

See in the 'Read more' section a very interesting information about Mike Cheiky, the founder of OSI.