μψ(muPSI)-a microcomputer simulation language with computer control capabilities

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Abstract
muPSI is a block-oriented, continuous system, simulation language implemented on a microcomputer with a Z80 processor, 56K RAM and twin floppy discs. It retains all the facilities of its minicomputer parent language PSI, together with additional features for implementation of computer control schemes, Intermachine communication is feasible via analogue channels and also provides for real-time clock facilities and hand-shake protocol for machine synchronisation. A version is also available which allows for multiprocessor communication via serial RS232 digital linkage. The use of muPSI is illustrated via a stand-alone benchmark problem involving the cardio-vascular system, and a self-tuning computer control example involving naval frigate manoeuvring. The language offers extensive simulation facilities using a desk-top microcomputer system, and should be useful as an educational tool as well as in research and development projects.

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