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The Computer Journal 1971 14(2):119-122; doi:10.1093/comjnl/14.2.119
© 1971 by British Computer Society
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Multi-access on the Chilton Atlas

J. C. Baldwin * and R. E. Thomas *

Atlas Computer Laboratory, Chilton, Didcot, UK

Multi-access facilities have been provided on the Chilton Atlas without degradation of throughput by use of a satellite computer. The satellite, an XDS Sigma 2, is attached to the main machine in two distinct ways: directly, by means of a peripheral link (i.e. appearing as a paper tape reader/punch), and indirectly, via a large disc file. A filing system (absent from the Atlas operating system) has been implemented on the Sigma 2 and provision is made for Atlas jobs to be initiated using these files. No real-time interaction is possible with a job running on Atlas, but output from the completed job may be directed back into the filing system for inspection at the user's terminal.

Received March 1970.

* Atlas Computer Laboratory, Chilton, Didcot, Berkshire


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