LINK 480Z

LINK 480Z
Later model LINK 480Z with plastic case
DeveloperResearch Machines Limited
TypePersonal computer
Release date1982
Discontinuedc. 1985
Operating systemCP/NOS (network), CP/M (disk), BASIC
CPUZ80 @ 4 MHz
Memory256 KB maximum (58 KB directly addressable)
Removable storageCassette tape, 5¼-inch floppy disk
DisplayComposite monitor or TV: 40×24 or 80×24 character monochrome text display
(Optional interface) Composite video, TTL RGB monitor: 640×192 pixels, 1 bit per pixel; 320×192 pixels, 2 bits per pixel; 160×96 pixels, 4 bits per pixel; 256 different intensities (composite video) or one of 8 colours (TTL RGB output).
ConnectivityCHAIN Network (optional)

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.

  1. ^ Research Machines Limited (1983). "Hardware Specification". LINK 480Z Information File (PDF). pp. 2.1–2.3. PN 10939. Retrieved 2008-02-21.