yann64andClaude Opus 5.5
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1,289 discussions, 9,527 archived comments; pages no longer carry the comments themselves. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
122 lines
3.5 KiB
Markdown
122 lines
3.5 KiB
Markdown
---
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title: Litton - Monroe OC-8820
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categories:
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- Computers
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types:
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- Professional Computer
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origins:
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- U.S.A.
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years:
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- '1982'
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cpus:
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- Z80
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params:
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name: OC-8820
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image: /media/museum/photos/monroe_8820_system_s2.jpg
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company: /companies/litton-monroe
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company_name: Litton - Monroe
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specs:
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- label: NAME
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value: OC-8820
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- label: MANUFACTURER
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value: Litton - Monroe
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- label: TYPE
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value: Professional 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: '1982'
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- label: BUILT IN LANGUAGE
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value: The Monroe BASIC was an extended version of the BASIC used in the Luxor ABC80/ABC800 computers.
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- label: KEYBOARD
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value: Typewriter type, 93 keys with numeric keypad & function keys
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- label: CPU
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value: Z80
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- label: SPEED
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value: Unknown
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- label: RAM
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value: 128 to 256 KB
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- label: VRAM
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value: 16 KB
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- label: ROM
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value: Unknown
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- label: TEXT MODES
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value: 80 columns x 25 lines
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- label: GRAPHIC MODES
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value: None
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- label: COLORS
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value: Monochrome amber
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- label: SOUND
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value: Unknown
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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: 1 parallel and 1 serial port
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- label: BUILT IN MEDIA
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value: 2 x 300 KB 5.25 floppy-disk drives
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- label: OS
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value: Proprietary Monroe OS called OS8MT (MT for multi-tasking), CP/M
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- label: POWER SUPPLY
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value: Built-in PSU
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- label: PERIPHERALS
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value: 10 MB hard-disk unit
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- label: PRICE
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value: about $3,000
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tabs:
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- photos
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- adverts
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- hardware
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forum_thread: 1048
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photos:
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- title: FRONT VIEW
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subtitle: ''
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text: Thanks to **Chris Kelepouris**
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image: /media/museum/photos/monroe_8820_system_s1.jpg
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- title: KEYBOARD CLOSE-UP
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subtitle: ''
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text: Thanks to **Bob Heptig** for all the following pictures.
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image: /media/museum/photos/monroe_8820_keyboard_s1.jpg
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- title: 'OPENED #1'
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subtitle: ''
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text: ''
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image: /media/museum/photos/monroe_8820_inside_s1.jpg
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- title: 'OPENED #2'
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subtitle: ''
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text: ''
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image: /media/museum/photos/monroe_8820_opened_s1.jpg
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- title: INSIDE
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subtitle: ''
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text: Main board and FDD controller card.
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image: /media/museum/photos/monroe_8820_electronics_s1.jpg
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- title: MONROE ORIGINAL DISKETTES
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subtitle: ''
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text: ''
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image: /media/museum/photos/monroe_8820_diskettes_s1.jpg
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adverts:
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- title: MONROE ADVERT, FEB. 1983
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subtitle: ''
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text: ''
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image: /media/museum/pubs/monroe_8820_pub0283_s1.jpg
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hardware:
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- title: 10 MB HDD UNIT
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subtitle: ''
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text: Thanks to **Chris Kelepouris**, the proud owner of an OC-8820
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image: /media/museum/hardware/monroe_8820_hddunit_s1.jpg
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- title: INSIDE THE HDD UNIT
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subtitle: ''
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text: ''
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image: /media/museum/hardware/monroe_8820_hddunit_s2.jpg
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oc_id: 1078
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source:
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url: https://web.archive.org/web/20230608081221/http://www.old-computers.com/museum/computer.asp?c=1078
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date: '2023-06-08'
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---
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The Monroe OC-8820 was an all-in one Z80 based system featuring 128 to 256 KB of RAM, a monochrome CRT and a dual 5.25" 300 KB floppy disk drive.
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It used its own multitask operating system, but a CP/M OS could be acquired separately along with a specific Monroe BASIC interpreter, Dbase II, Wordstar and a spreadsheet (probably CalcStar). Even under CP/M, You could run the a Spreadsheet report and still run Wordstar.
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A 10 MB hard-disk drive unit was also available.
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The Monroe computer family also had a color graphics model, but we have no information about it.
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