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From The Research Machines RML380Z and 480Z wiki and file archive
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The Research Machines 380Z (often called the RML 380Z or RM 380Z) was an early 8-bit microcomputer produced by Research Machines Limited in Oxford, England, from 1978 to 1985.
The 480Z also used a Z80 microprocessor with up to 256KB of bank-switched RAM. 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.
Disk images of games, utilities and applications.
