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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
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---
title: Amstrad NC 100
categories:
- Computers
types:
- Portable
origins:
- United Kingdom
years:
- '1992'
cpus:
- Z80
params:
name: NC 100
company: /companies/amstrad
company_name: Amstrad
specs:
- label: NAME
value: NC 100
- label: MANUFACTURER
value: Amstrad
- label: TYPE
value: Portable
- label: ORIGIN
value: United Kingdom
- label: YEAR
value: August 1992
- label: BUILT IN LANGUAGE
value: BBC Basic
- label: KEYBOARD
value: Full-stroke 64 keys
- label: CPU
value: Z80
- label: CO-PROCESSOR
value: NEC custom chip (various I/O and memory management)
- label: RAM
value: 64 KB
- label: ROM
value: Unknown
- label: TEXT MODES
value: 80 char x 8 lines
- label: GRAPHIC MODES
value: 480 x 64 pixels
- label: COLORS
value: bluish grey LCD
- label: SOUND
value: Beeper
- label: SIZE / WEIGHT
value: 29,5(W) x 21(D) x 2,8(H) cm. / 1 Kg
- label: I/O PORTS
value: Parallel Centronics, Serial RS-232
- label: BUILT IN MEDIA
value: 1 MB PCMCIA slot
- label: OS
value: BBC BASIC, word processor, diary, calculator, address book, serial terminal in ROM
- label: POWER SUPPLY
value: External 7.5V AC adaptor or batteries
- label: PRICE
value: £199
tabs:
- photos
- emulators
- links
- docs
photos:
- title: NC-100
subtitle: ''
text: Here a German version (QWERTZ keyboard)
image: null
- title: MAIN MENU
subtitle: ''
text: |-
Each firmware application can be called by using a combination of coloured keys:\
• Word processor (Yellow + Red)\
• Calculator (Yellow + Green)\
• Calendar/Diary (Yellow + Blue)\
Or by Ctrl keys:\
• BBC BASIC (Ctrl-B)\
• Games (Ctrl-G)
image: null
- title: BOTH SIDES
subtitle: ''
text: |-
On left side, LCD contrast adjustment,\
On right side, PCMCIA card slot.
image: null
- title: REAR CONNECTORS
subtitle: ''
text: |-
From left to right:\
• Jack for a 6V external AC adaptor\
• Serial RS232 DB9 connector\
• Parallel printer DB25 connector.
image: null
- title: UNDERNEATH
subtitle: ''
text: |-
**(1)** RAM backup battery housing (CR-2032)\
**(2)** Main battery housing (4 x AA size)\
**(3)** Removable stands which allow the NC-100 to be used in tilted position\
**(4)** Firmware 256 KB ROM chip. Can be easily replaced. Normally covered with a plastic lid.
image: null
- title: INSIDE
subtitle: ''
text: |-
The main board occupies one half of the case area, the keyboard occupies the second half. The board was made by Nakajima in Japan. The LCD display was made by Sanyo.
**(1)** AA battery housing\
**(2)** PCMCIA card slot\
**(3)** CMOS, 6MHz version of the Zilog Z80 processor\
**(4)** Keyboard connectors\
**(5)** Real time clock chip\
**(6)** Custom chip, made by NEC, in charge of memory management, keyboard and various I/O\
**(7)** LCD display connector\
**(8)** I/O chip (Parallel to Serial converter)\
**(9)** 2 32K x 8-bit CMOS chips (43257) hold the 64 KB main RAM\
**(10)** Loudspeaker connector\
**(11)** The 256K ROM chip is mounted to face the bottom side of the case\
**(12)** External power supply jack and power push-button\
**(13)** Beeper\
**(14)** LCD Contrast knob
image: null
- title: NC-100, 150 BAG
subtitle: ''
text: ''
image: null
emulators:
- title: nc100em
url: http://rus.members.beeb.net/nc100em.html
platform: Unix / Linux
text: nc100em is an Amstrad NC100 emulator. It also has NC200 support, but this is less complete.
- title: MESS
url: http://www.mess.org
platform: Multiplatform
text: MESS emulates the NC100, among other things.
links:
- title: 8bit-micro.com - Amstrad NC100 Page
url: http://www.8bit-micro.com/amstrad-nc100.htm
text: Additional information on the Amstrad NC100 - Display Upgrade
- title: Amstrad Computer Site / NC100/150/200 page
url: http://web.ukonline.co.uk/cliff.lawson/notepad.htm
text: Useful information there, to help you diagnose why your NC system doesn't work anymore
- title: Amstrad NC200 Notebook Page
url: http://www.cpmspectre.pwp.blueyonder.co.uk/nc200/nc200idx.htm
text: Some software to download
- title: NC100 Yahoo Group
url: http://de.groups.yahoo.com/group/NC100/
text: Discussion group devoted to the Amstrad NC serie
- title: Tim's Amstrad NC users' site
url: http://www.ncus.org.uk/intro.htm
text: Tech info, downloads, software and much more!
- title: ZCN
url: http://www.ibiblio.org/pub/packages/zcn/
text: ZCN is a free operating system for the Amstrad NC100 (Notepad) and NC200 (Notebook).
docs:
- title: AMSTRAD NC-100 - USER MANUAL
url: null
cover: null
text: |-
**AMSTRAD NC-100 - USER MANUAL**\
written by Amstrad
 compiled/archived by Charles Da Silva\
 type of document : PDF\
 source : [Amstrad.CPC](http://amstrad.cpc.free.fr/)
comments:
- author: Karl Cross (United Kingdom)
date: Saturday 15th January 2022
text: 'This website really is ace. Recently came to own one of these machines. A fascinating piece of history. Quite practical as a distraction free writing machine. One query: Does anyone know which printers it is compatible with?'
- author: David Simkin (Australia)
date: Sunday 13rd March 2016
text: |-
I purchased an NC100 in 1992 for $A399 to type menus for my restaurant. I later purchased a 512K memory card for $189!\
The Australian flyer proudly boasts "In 10 seconds flat, anyone can use it" and was promoted as the "Amstrad Notepad".
- author: Dirk Hillbrecht (Germany)
date: Saturday 1st November 2008
text: |-
I purchased an NC 100 around 1994 for 200,- DM (approx. 100,- EUR) in a local electronic store. It served me for more than two years in my studies where I used it to type the lectures directly into the system. With all my classmates writing by hand this was really exotic back those days. I used kind of a "simplified" LaTeX notation which I converted into "real" LaTeX on my computer at home using some scripts in a Linux environment. this setup allowed me to type even complex mathematical formulas almost error-free in realtime!
I still have the device and while not using it any more today, I will keep it - it was my first "Laptop"...
- author: Brian K. Hahn (USA)
date: Monday 24th May 2004
text: |-
The Amstrad NC-100 is closely related to the Tandy WP2 in that both have have mainboard manufactured by Citizen CBM Division.\
As a collector, I recently aquired an NC100. I found the display rather dim, but everything else about the unit was impressive. I have since aquired Citizen Hi-Contrast displays for the NC100. I upgraded my unit and it looks great and very crisp. If anyone is interested I can do the same for them.\
Please visit my Amstrad NC100 page at: http://www.8bit-micro.com/amstrad-nc100.htm
oc_id: 753
source:
url: https://web.archive.org/web/20230608212536/http://www.old-computers.com/museum/computer.asp?c=753
date: '2023-06-08'
---
By 1992, once fast-growing Amstrad was struggling. Its reputation as a PC maker had been undermined by a batch of dodgy Seagate disk drives at the same time that bigger-name vendors were engaged in a price war, squeezing Amstrad out of the market.
The NC 100, [NC 150](/museum/amstrad-nc-150/) and [NC 200](/museum/amstrad-nc-200/) were three products that its founder Alan Sugar was hoping would help revive the company's fortunes.
Cutting edge, they were not. Both were based on old eight-bit Zilog Z80 microprocessors. Curiously, both machines came with a BBC Basic interpreter on which users could develop their own applications.
The NC 100 was a £199 notebook computer the size of a piece of A4 paper, with a full size keyboard and a "letterbox" screen at the top, offering 80 columns by 8 lines.
It had an RS232 serial port and a Centronics parallel port for printer and communications. Built-in were 64 kilobytes of memory, expandable to 1 megabyte with the addition of an add-on memory card.
"If you can't use this new computer in five minutes, you'll get your money back," boasted the company in its launch advertising. For ease of use, it had four colour-coded keys giving instant access to a number of built-in applications, including a word processor, calculator, diary and address book.
At a time when an entry-level lap-top computer cost more than £2,000 and the sub-notebook had not been invented, the NC100 and NC200 offered a good value alternative for those with basic computing needs, such as word processing on the move.
All the NC computers were made in Japan by Nakajima. The company also sold its own version of the NC-100, called [ES-210](/museum/nakajima-es-210/).
Thanks to **Graeme Burton** for information about NC series computers.