Smiths Group Plc

James Frederick Moore

Denis Vaughan Weale

John Alun Davies

Peter John Stevens

A processing system has a processor with a memory map identifying locations in a memory where data are stored, data associated with an application being stored at the same location every time an application is run. The processor runs each application during specified processing time slots. A monitor contains information as to the memory locations associated with each application and the time slots during which each application should be run. The monitor also has a register containing a keyword, which is compared with a keyword supplied by the processor when it switches between user mode and supervisory mode so that the monitor denies access to memory locations associated with the other mode.

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Bristol, United Kingdom

James Frederick Moore