yann64andClaude Opus 5.5
b274874139
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
84 lines
2.7 KiB
Markdown
84 lines
2.7 KiB
Markdown
---
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title: IMSAI PCS 80
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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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- '1977'
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cpus:
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- Intel 8080 - IMSAI PCS 80
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params:
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name: PCS 80
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image: /media/museum/photos/imsai0.jpg
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company: /companies/imsai
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company_name: IMSAI
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specs:
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- label: NAME
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value: PCS 80
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- label: MANUFACTURER
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value: IMSAI
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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: '1977'
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- label: BUILT IN LANGUAGE
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value: None
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- label: KEYBOARD
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value: Video terminal
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- label: CPU
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value: Intel 8080 - IMSAI PCS 80/30 came with
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- label: SPEED
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value: 3 MHz
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- label: RAM
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value: 2.25 KB (up to 64 KB thanks to RAM boards, there are 4K, 16K, 32K and 64K memory expansion boards).
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- label: ROM
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value: 3 KB (Including monitor)
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- label: TEXT MODES
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value: 12x40, 12x80, 24x40 and 24x80 (128 characters of either 5x7 or 7x10 dot matirx fonts)
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- label: I/O PORTS
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value: Serial ports (2) - Parallel Port (1) - Monitor - S100 Bus (8 expansion slots)
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- label: OS
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value: 8K DOS based upon CP/M
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- label: POWER SUPPLY
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value: built-in 28AMP power supply unit
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- label: PERIPHERALS
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value: Floppy drives inteface, Single or dual 8'' drives in a separate housing same size as main frame unit
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tabs:
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- photos
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forum_thread: 346
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photos:
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- title: THE PCS-80 COMPONENTS
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subtitle: ''
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text: ''
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image: /media/museum/photos/imsai_pcs80_components_1.jpg
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- title: THE PCS 80 MODEL 15
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subtitle: ''
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text: ''
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image: /media/museum/photos/imsai_pcs80_model15_1.jpg
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- title: THE PCS-80 MODEL 30
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subtitle: ''
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text: ''
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image: /media/museum/photos/imsai_pcs80_mod30_1.jpg
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oc_id: 342
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source:
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url: https://web.archive.org/web/20230608155226/http://www.old-computers.com/museum/computer.asp?c=342
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date: '2023-06-08'
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---
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The PCS 80 came with a lot of peripherals: line and character printers, CRT terminals, intelligent keyboards, ACR storage, 8" and 5.25" floppy disks and with several languages: TTY BASIC with OS, 4K, 8K and 12K BASIC, audio cassette BASIC with OS, & a scientifically oriented disk BASIC and level 2 Fortran IV compiler.
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**Greg Bober** stil have an extended working configuration including:\
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• External 5.25" quad density 380Kb Micropolis floppy with BASIC,\
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• Faster memory & "I" tempgrade CPU, speed could goto 7MHz,\
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• 58K 10MHz RAM,\
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• Custom boot operating system,\
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• 64K of extended RAM/ported PROM containing the DOS & BASIC operating system to have 1 second versus 30 second floppy boot up,\
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• Extrernal 12" monitor since 24x80 is hard to see on tiny screen,\
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• Spare parts.\
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Numerous photos of his system may be seen [here](http://www.smallscalerailway.com/PCS80%20IMSAI.htm).
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