Files
yann64andClaude Opus 5.5 b274874139 All machines linked to their forum thread (full comment import)
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
2026-10-13 17:26:43 +02:00

6.6 KiB

title, categories, types, origins, years, cpus, params
title categories types origins years cpus params
Lucas Nascom 1
Computers
Home Computer
United Kingdom
1978
Z80
name image logo company company_name specs tabs forum_thread photos adverts hardware emulators links related oc_id source
Nascom 1 /media/museum/photos/lucas_nascom1_system_1.jpg /media/museum/logos/lucas_nascom1_logo.gif /companies/lucas Lucas
label value
NAME Nascom 1
label value
MANUFACTURER Lucas
label value
TYPE Home Computer
label value
ORIGIN United Kingdom
label value
YEAR 1978
label value
BUILT IN LANGUAGE Monitor
label value
KEYBOARD Full stroke 47 keys
label value
CPU Z80
label value
SPEED 1 or 2 MHz.
label value
CO-PROCESSOR None
label value
RAM 1 KB
label value
VRAM 1 KB
label value
ROM 1 or 2 KB
label value
TEXT MODES 48 chars. x 16 lines
label value
GRAPHIC MODES None
label value
COLORS Monochrome
label value
SOUND Unknown
label value
SIZE / WEIGHT 30.5 (L) x 19.2 (W) cm. (8 x 12 in)
label value
I/O PORTS TV-UHF video interface, selectable serial port (Tape recorder or RS232 or Teletype current loop)
label value
BUILT IN MEDIA Cassette tape
label value
OS Monitor in ROM
label value
POWER SUPPLY Separate power supply unit (sold as option)
label value
PERIPHERALS Memory boards and various I/O interfaces
label value
PRICE £199 in kit form
photos
adverts
hardware
emulators
links
795
title subtitle text image
LARGE VIEW Taken from a Nascom brochure /media/museum/photos/lucas_nascom1_system_2.jpg
title subtitle text image
NASCOM 1 BROCHURE /media/museum/pubs/lucas_nascom1_brochure_s1.jpg
title subtitle text image
IEEE488 CARD Made by EV Computing Ltd. /media/museum/hardware/lucas_nascom2_ieee488board_1.jpg
title subtitle text image
ROM CARD This card can be fitted with 2708 (1 KB) or 2716 (2 KB) EPROM chips, giving up to 32 KB of ROM area. The card also provides a special socket (bottom left) for the 8K Microsoft BASIC interpreter ROM. /media/museum/hardware/lucas_nascom2_romboard_1.jpg
title subtitle text image
ROM/RAM MEMORY CARD Features 32 KB RAM (16 x 4116) and 8 KB ROM (4 x 2708) /media/museum/hardware/lucas_nascom2_memoryboard_1.jpg
title subtitle text image
48 KB RAM CARD This card holds 3 banks of 16 KB 4116 RAM chips. /media/museum/hardware/lucas_nascom2_48kramboard_1.jpg
title subtitle text image
COLOR GRAPHICS CARD The PLUTO color graphics card offered a maximum resolution of 768 x 576 pixels with 8 colours. It featured an Intel 8088 processor, 192 KB of RAM (3 planes of 64 KB) and could be connected to any RGB TTL or composite colour or monochrome monitor. /media/museum/hardware/lucas_nascom2_plutographcard_1.jpg
title subtitle text image
I/O CARD This card provides support for six 8-bit parallel ports, one serial port (not installed here), and one counter/timer control unit. The card was supplied with empty sockets. Each device could be acquired separately. /media/museum/hardware/lucas_nascom2_iocard_1.jpg
title subtitle text image
FDD CONTROLLER CARD Floppy disk drive controller card along with its genuine Lucas box. /media/museum/hardware/lucas_nascom2_fdboard_s1.jpg
title subtitle text image
BUS CARD EXTENDER This card allowed to check any Nascom card without it being directly inserted into the Nascom bus. /media/museum/hardware/lucas_nascom2_busextender_s1.jpg
title url platform text
Nascom 1 emulator http://members.aol.com/mk14emu/nascom.htm MS DOS This emulator, written by Paul Robson, supports all the hardware of the standard Nascom 1
title url platform text
MESS http://www.mess.org Windows MESS also emulates Nascom computers !
title url platform text
Nasemu http://www.myplace.nu/nascom/nasemu.htm Windows This Nascom-2 emulator is a work in progress. It is an attempt to fully emulate a Nascom-2 computer.
title url platform text
Nascom 2 / 3 Java Emulator http://www.nascomhomepage.com/#Virtual%20Nascom Other platform Java emulator written by Richard Espley is available.
title url platform text
Virtual Nascom http://www.nascomhomepage.com/#Virtual%20Nascom Multiplatform Nascom emulator for Unix/X11 and DOS
title url text
All things Nascom, Gemini and MAP-80 HTTP://WWW.80BUS.COM A complete archive for 80 BUS Systems
title url text
MIXTEL - Nascom.info http://www.mixtel.pwp.blueyonder.co.uk/nascgem/index.html Great Nascom history and info
title url text
Nascom Nostalgia http://www.myplace.nu/nascom/ Excellent ressource with info, software and documentations
title url text
The Nascom Home Page http://www.nascomhomepage.com/ Wow, you want to go there. Info, links ,software, documentations and more !
/museum/lucas-nascom-2
/museum/lucas-nascom-3
814
url date
https://web.archive.org/web/20230530214032/http://www.old-computers.com/museum/computer.asp?c=814 2023-05-30

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.