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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

content/museum/holborn-9100.md

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+---
+title: HOLBORN 9100
+categories:
+- Computers
+types:
+- Professional Computer
+origins:
+- Netherlands
+years:
+- '1981'
+cpus:
+- Z80-A
+params:
+  name: '9100'
+  company: /companies/holborn
+  company_name: HOLBORN
+  specs:
+  - label: NAME
+    value: '9100'
+  - label: MANUFACTURER
+    value: Holborn
+  - label: TYPE
+    value: Professional Computer
+  - label: ORIGIN
+    value: Netherlands
+  - label: YEAR
+    value: '1981'
+  - label: BUILT IN LANGUAGE
+    value: None
+  - label: KEYBOARD
+    value: Full-stroke keyboard with numeric keypad and function keys
+  - label: CPU
+    value: Z80-A
+  - label: SPEED
+    value: 4 Mhz.
+  - label: RAM
+    value: 72 KB expandable to 220 KB
+  - label: ROM
+    value: unknown
+  - label: TEXT MODES
+    value: unknown
+  - label: GRAPHIC MODES
+    value: unknown
+  - label: COLORS
+    value: Monochrome
+  - label: SOUND
+    value: unknown
+  - label: BUILT IN MEDIA
+    value: 2 x 8'' 1.2 MB floppy disc drives. Optional 30 MB hard disk
+  - label: OS
+    value: Holborn OS or CP/M
+  - label: POWER SUPPLY
+    value: Built-in power supply unit
+  - label: PRICE
+    value: About $10,000 for a full-sized version
+  tabs:
+  - adverts
+  - links
+  adverts:
+  - title: HOMO-COMPUTERUS
+    subtitle: ''
+    text: |-
+      This image is from a brochure of a Dutch exhibition called "The office of the future"
+
+      Courtesy of the **Computer museum of the University of Amsterdam**
+    image: null
+  links:
+  - title: Allard's Computer Museum Groningen
+    url: http://www.computermuseumgroningen.nl/holborn/holborn.html
+    text: More detailed info here with good pictures
+  comments:
+  - author: Neil macPherson (UK)
+    date: Saturday 27th February 2021
+    text: The info text states that the Holborn 9100 had 64k ram and needed to use bank switching,this is not true because 64k ram is the maximum amount of memory that an 8 bit proccessor can access.
+  - author: Yan
+    date: Monday 2nd December 2019
+    text: The monitor design looks like something coming out from an early 1970s sci-fi movie. It''s kind of scary for me.
+  - author: Allard (Groningen The Netherlands)
+    date: Tuesday 24th January 2006
+    text: |-
+      For more pictures and details see the url
+
+      Greetings,
+
+      Allard
+  - author: linkman (Slovak republic)
+    date: Thursday 21st April 2005
+    text: heh nice design of monitor
+  oc_id: 749
+  source:
+    url: https://web.archive.org/web/20230529195224/http://www.old-computers.com/museum/computer.asp?c=749
+    date: '2023-05-29'
+---
+
+The Holborn System 9100/9200 computer was a Dutch product ("born in Holland") consisting of a science-fiction style desk-top display/keyboard unit, a processor box with two or four 8" floppy drives and a printer. The processor was a Z80 with 64 KB of address space.
+
+There were two versions : the larger one used a proprietary multi-user operating system, one feature of which was the use of a lightpen for much the same purposes as today's mouse. The smaller machine used CP/M without lightpen interaction. The computer was mainly sold to small companies for administration and bookkeeping purposes.
+
+The machine's hardware was designed by H.A. Polak, the console by Vos Industrial Designers. The disks and the system electronics were in a separate refrigator-sized housing (a desktop box for the smaller system); the console shown in the picture mainly contains a converted MicroBee terminal.
+
+The Holborn company was founded in 1979, it's head office was in Holten (Hol born). The company has been active until 1983, when it bankrupted. Like most manufacturers of computer systems of original design around the world, it hasn't survived the competition of IBM and the IBM-PC-clone builders. About 200 machines were sold, 50 of them of the larger variety.
+
+Thanks to the [Computer museum of the University of Amsterdam](http://www.science.uva.nl/faculteit/museum/) for text and pictures.
+
+<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>