Full content from the completed page crawl (media download still running)
6,654 pages: 1,289 machines, 702 software, 460 companies, 64 history, 17 articles, 59 fun. 4,336 media files so far; references to files not downloaded yet are left out. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
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Claude Opus 5.5
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title: OHIO Scientific Superboard II
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categories:
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- Computers
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types:
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- Home Computer
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origins:
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- U.S.A.
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years:
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- '1978'
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cpus:
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- '6502'
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params:
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name: Superboard II
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company: /companies/ohio-scientific
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company_name: OHIO Scientific
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specs:
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- label: NAME
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value: Superboard II
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- label: MANUFACTURER
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value: OHIO Scientific
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- label: TYPE
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value: Home Computer
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- label: ORIGIN
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value: U.S.A.
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- label: YEAR
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value: '1978'
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- label: BUILT IN LANGUAGE
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value: OSI BASIC interpreter
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- label: KEYBOARD
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value: Full stroke 50 keys
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- label: CPU
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value: '6502'
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- label: SPEED
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value: 1 MHz (could be overclocked to 2 MHz)
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- label: CO-PROCESSOR
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value: None
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- label: RAM
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value: 4 KB expandable to 8 KB on board
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- label: VRAM
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value: 1 KB
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- label: ROM
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value: 8 KB (OSI BASIC + Monitor)
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- label: TEXT MODES
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value: 16 to 48 chars. x 16 lines
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- label: GRAPHIC MODES
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value: None, but 128 graphic characters
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- label: COLORS
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value: Monochrome
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- label: SIZE / WEIGHT
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value: unknown
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- label: I/O PORTS
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value: Tape recorder and printer ports
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- label: BUILT IN MEDIA
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value: None
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- label: POWER SUPPLY
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value: External 5V power supply unit
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- label: PRICE
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value: $200 assembled
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tabs:
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- photos
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- adverts
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- links
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- docs
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photos:
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- title: SYSTEM
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subtitle: ''
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text: |-
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**(1)** 4 KB RAM expansion area. All of the board RAM chips are 2114 (1K \* 4 bits static RAM)\
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**(2)** 4 KB main memory area\
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**(3)** 6502 processor\
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**(4)** Expansion connector (40 pin socket)\
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**(5)** ACIA 6850 chip (Asynchronous Communication Interface Adapter)\
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**(6)** Monitor ROM chip\
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**(7)** BASIC ROM chips\
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**(8)** Video RAM chips (2x2114 not installed)\
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**(9)** Characters generator ROM chip\
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**(10)** Cassette interface connector and circuitry
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image: null
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- title: CLOSE UP
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subtitle: ''
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text: ''
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image: null
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adverts:
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- title: FRENCH AD (JAN. 1980)
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subtitle: ''
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text: '"Right now, your computer for today"'
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image: null
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- title: US ADVERT (SEPT. 1979)
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subtitle: ''
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text: ''
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image: null
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links:
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- title: Web Wiz CAPTCHA
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url: http://www.webwizcaptcha.com
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text: ''
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docs:
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- title: SUPERBOARD II / CHALLENGER 1P - USERS MANUAL
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url: null
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cover: null
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text: |-
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**SUPERBOARD II / CHALLENGER 1P - USERS MANUAL**\
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written by Ohio Scientific
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compiled/archived by David Wilson\
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type of document : PDF\
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size : 2,7 MB\
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source : www.old-computers.com
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- title: THE 8K BASIC-IN-ROM - REFERENCE MANUAL
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url: null
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cover: null
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text: |-
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**THE 8K BASIC-IN-ROM - REFERENCE MANUAL**\
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written by Ohio Scientific
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compiled/archived by David Wilson\
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type of document : PDF\
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size : 576 KB\
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source : www.old-computers.com
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- title: CHALLENGER 1P - TECHNICAL REPORT
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url: null
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cover: null
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text: |-
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**CHALLENGER 1P - TECHNICAL REPORT**\
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written by Ohio Scientific
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compiled/archived by David Wilson\
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type of document : PDF\
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size : 1,4 MB\
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source : www.old-computers.com
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- title: THE CHALLENGER CHARACTER GRAPHICS REFERENCE MANUAL
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url: null
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cover: null
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text: |-
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**THE CHALLENGER CHARACTER GRAPHICS REFERENCE MANUAL**\
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written by Ohio Scientific
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compiled/archived by David Wilson\
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type of document : PDF\
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size : 1,3 MB\
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source : www.old-computers.com
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comments:
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- author: Terry Shingara (Harrisburg, PA, USA)
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date: Thursday 26th March 2020
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text: Does anyone know where I can get the pin headers to plug into the superboard II
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- author: Myk Dormer (United Kingdom)
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date: Monday 25th June 2018
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text: |-
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Also a Superboard II owner, a machine I fondly remember.\
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After a couple of years the masked roms developed a thermal fault (only worked when cold) but the documentation was so good that (even as a teenager) I was able to clone the whole machine onto a home made card-frame of veroboards (with the errant ROMs copied onto an eprom).\
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That machine probably taught me more than the engineering degree I later took :)
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- author: Russ
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date: Sunday 20th May 2018
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text: I still have mine, I got it when I was in college but I don''t remember what year, maybe 77 or 1978?
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- author: jeff (Australia)
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date: Wednesday 17th May 2017
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text: I have my original Superboard II on the wall in the shed. It no longer works due to Mr Rat releaving him self on the pcb. I had the hand soldered 64x40 character, 512x320 pixel graphics option. i have the work notes to go the mod somewhere. i will have a mint condition C1P and Orange ''green screen'' CRT $-)
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- author: Andy B (Australia)
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date: Wednesday 12th April 2017
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text: My first computer. Learned to code in BASIC and 6502 machine code. Wrote a ''snake'' type game and high-speed machine-code line drawing routines so that I could animate a rotating cube in real time. I expanded the memory to 12K by piggy-backing 2114 chips on top of the ones on the board and wiring up the chip $ pin to the address decoder chip. Good Times. Best story though is the night I brought it home from the store. It had been wrapped in tin foil - protection from static shock - so I though I''d just leave it sitting on the foil when I switched it on. Not a great idea. Fortunately, just blew the on-board fuse so I was back up and running in a few minutes.
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- author: Ben Grimer
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date: Thursday 9th March 2017
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text: I used to play games on this with my brother and write rudimentary basic programs. I played hectic and new York taxi (and became one of the elite !).
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- author: Peter Ledger (Oldham England)
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date: Wednesday 23rd January 2013
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text: I have just dragged my superboard II out of storage and intend getting it up and running again. I spent many happy hours programming ms basic with this dinosaur and hope to do so again
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- author: Richard Scales (England)
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date: Tuesday 6th November 2012
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text: I got one of these in 1979 and spent many many hours doing all kinds of things with it, programming basic and 6502 assembler as well as building memory boards and a disk controller. It has not been switched on for decades but it is still kept safe for a really rainy day!
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- author: Paul (Canada)
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date: Monday 3rd January 2011
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text: I bought a Supper Board II in 1979 and built a power supply and TV interface for it. I programmed it in Basic and Assembly Language for several years..learned a lot from that Computer. I also used a Compac 386 for a few years traveling with it.
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- author: Andy Pagin (London UK)
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date: Monday 22nd March 2010
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text: |-
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I wrote my first ever program on one of these in about 1982.
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print "Hello World"
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Been a pro-developer ever since.
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- author: Andy (England)
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date: Wednesday 6th December 2006
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text: I worked on these in the early 80s. I threw mine out about 10 years ago and now regret it. Does anyone have one they'd like to give me? I'm suffering from severe nostalgia.
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related:
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- /museum/ohio-scientific-challenger-1p
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- /museum/ohio-scientific-challenger-4p
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- /museum/ohio-scientific-challenger-ii
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- /museum/ohio-scientific-challenger-iii
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oc_id: 860
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source:
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url: https://web.archive.org/web/20230331055939/http://www.old-computers.com/museum/computer.asp?c=860
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date: '2023-03-31'
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---
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The Superboard II, also called **Model 600**, was quite the same board as the british clone [Compukit UK-101](/museum/compukit-uk-101/).
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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.
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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.
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See in the 'Read more' section a very interesting information about Mike Cheiky, the founder of OSI.
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