Click Here to visit our Sponsor
The Latest News ! The History of Computing The Magazine Forums Collectors corner Have Fun there ! Buy books and goodies
  Click here to loginLogin Click here to print the pagePrinter ViewClick here to send a link to this page to a friendTell a FriendTell us what you think about this pageRate this PageMistake ? You have mr info ? Click here !Add Info     Search     Click here use the advanced search engine

Tandy
Radio
Shack

TRS-80
Model
100
/
102
Browse console museumBrowse pong museum









 

Pixel adventurer goodies !

see details
MZ-700 goodies !

see details
Commodore 64 goodies !

see details
H.E.R.O. goodies !

see details
Odyssey 2 / Videopac Select Game prompt goodies !

see details
Back to the roots goodies !

see details
www.old-computers.com logo goodies !

see details
Oric Atmos goodies !

see details
Space Invaders - Retro Gamer goodies !

see details
I love my Oric-1 goodies !

see details
Camputers Lynx logo goodies !

see details
Odyssey 2 / Videopac sprites goodies !

see details
Atari ST bomb icons goodies !

see details
1kb memory only...sorry goodies !

see details
Apple II goodies !

see details
Space Invaders goodies !

see details
READY prompt goodies !

see details
Amstrad CPC-464 goodies !

see details
Horace is not dead goodies !

see details
Commodore VIC-20 goodies !

see details
MSX Retro Gamer goodies !

see details
Amiga Workbench goodies !

see details
Atari ST bee icon goodies !

see details
Commodore 64 boot screen goodies !

see details
Destroy all humanoids ! goodies !

see details
ZX Spectrum goodies !

see details







L > LUCAS  > Nascom 1     


LUCAS   Lucas
Nascom 1

The Nascom 1 was the most popular British made computer kit in the U.K. It was an affordable single board Z80 based computer with a keyboard attached by cable. It came as a kit or ready-built.

Why Nascom? Because the idea of a low cost computer intended for U.K. hobbysts was originated by an American company called Nasco. However, the board was designed in the U.K. by Shelton Instruments Ltd that, later, also designed and sold the Sig-Net

The minimum configuration featured 2 KB RAM and 1 KB ROM monitor, but the Nascom could be gradually extended into a system that was powerful enough to compete with many home computers of the time, Pet, Apple or Tandy.

Actually, the RAM area was divided into two parts: 1 KB for user program and data and 1 KB for storing characters displayed to the television. The ROM monitor provided basic functions: enter program and data, display memory content and processor registers, save and load programs from a tape recorder.

A whole range of peripherals and expansions were available from independant suppliers, as well as a vast range of software and many user groups. Several magazines dedicated to the Nascom and its relatives, the Gemini computers, were published. Many languages were available including BASIC, PASCAL, C, FORTH, etc.

ShareThis


 

I remember building one of these while at college learning to become a TV engineer. It got me interested in computers and led to me working for the same college (I''m still there after 24 years!). We had 8 of these which we used for microprocessor $ control systems courses. They were mounted in 2U rack cases and expanded to 16K. I was so impressed with them that I built one for myself. The one problem I had was with the siting of the keyboard cable which would produce spurious characters until re-routed away from the power supply. I still fondly remember programming in assembler on these machines.

          
Monday 26th November 2012
Paul Thomas (UK)

$$ Was I only only person to make use of the 8 bytes of "spare" ram at the end of each display line?

No, I remember that well. Often these days, when writing some code and allocating Mbs to a memory array without a thought I think back to those days when every byte counted.

          
Thursday 27th September 2012
Nick Burnard (UK) (UK)

Like Frank Burgum, I bought mine from Henry''s Radio, although a little later in december 1979.
Mine too grew$ 64kb of ram, and a 20mA loop 110 baud teletype printer! It was a great system at the time, and only having memory from $0c80 to $fff and a stack that went down from $fff made things interesting to say the least! It made developing code an artform. Was I only only person to make use of the 8 bytes of "spare" ram at the end of each display line?

          
Monday 2nd July 2012
Jim Franklin (England)
Jim Franklin''s homepage

 

NAME  Nascom 1
MANUFACTURER  Lucas
TYPE  Home Computer
ORIGIN  United Kingdom
YEAR  1978
BUILT IN LANGUAGE  Monitor
KEYBOARD  Full stroke 47 keys
CPU  Z80
SPEED  1 or 2 MHz.
CO-PROCESSOR  None
RAM  1 KB
VRAM  1 KB
ROM  1 or 2 KB
TEXT MODES  48 chars. x 16 lines
GRAPHIC MODES  None
COLOrsc  Monochrome
SOUND  Unknown
SIZE / WEIGHT  30.5 (L) x 19.2 (W) cm. (8 x 12 in)
I/O PORTS  TV-UHF video interface, selectable serial port (Tape recorder or RS232 or Teletype current loop)
BUILT IN MEDIA  Cassette tape
OS  Monitor in ROM
POWER SUPPLY  Separate power supply unit (sold as option)
PERIPHERALS  Memory boards and various I/O interfaces
PRICE  £199 in kit form





Google
 
Web www.old-computersc.com


 

More pictures
Adverts
Hardware Info
Emulators
Internet Links
Documentations
Mini-Forum

Click here to go to the top of the page   
Contact us | members | about old-computers.com | donate old-systems | FAQ
OLD-COMPUTERS.COM is hosted by - NYI (New York Internet) -