RM Link 480Z in Metal Case

The LINK 480Z was an 8-bit microcomputer produced by Research Machines Limited in Oxford, England, during the early 1980s.

The 480Z used a Z80 microprocessor with up to 256 KB of bank-switched RAM.[1] The system could be used as a stand-alone unit with cassette-based storage and the BASIC programming language run from ROM, or it could boot CP/NOS (a network version of CP/M) over a local area network from a file server. When fitted with an optional external floppy disk drive the system could boot the CP/M operating system directly.

The 480Z was sold mainly to the UK educational market as cassette-based system or as a diskless node which could be connected, via the proprietary CHAIN Network, to a Research Machines 380Z acting as a file server.

The LINK 480Z was packaged as an integrated keyboard and system unit. Early systems were supplied with a black sheet-metal case, however this was quickly replaced by a cream-coloured plastic housing.

Our machine is the earlier metal case machine

Developer Research Machines Limited

Type Personal computer
Release date 1982
Discontinued c. 1985
Media 5-inch floppy disk
Operating system CP/NOS (network) or CP/M (disk)
CPU Z80 at 4 MHz
Memory 256 KB maximum (58 KB directly addressable)
Graphics 640192 pixels, 1 bit per pixel (optional)


Manufacturer: Research Machines
Date: 1982

Other Systems Related To RM Link 480Z in Metal Case:

Item Manufacturer Date
RM Nimbus PC-5200 Accelerator Research Machines Unknown
RM 380Z (Light Blue Case) Research Machines 1978
RM 380Z (Black Case) Research Machines 1978
RM 380Z (with Colour Card) Research Machines 1978
RM LINK 480Z Research Machines 1st January 1981
RM Nimbus PC Research Machines 1985
RM Nimbus AX/2 Research Machines 1986
RM Nimbus VX/2 Research Machines 1986
RM Nimbus NB300 Research Machines June 1991
RM Nimbus NB300 Research Machines June 1991
RM Nimbus PC-486/66 Research Machines 1993

This exhibit has a reference ID of CH31283. Please quote this reference ID in any communication with the Centre for Computing History.


RM Link 480Z in Metal Case

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