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Reducing the impact of task overruns in resource-constrained embedded systems in which a time-triggered software architecture is employed

When tasks in a safety-critical embedded system exceed their theoretically-predicted worst-case execution time, the impact on system behaviour may be catastrophic. This paper describes a novel solution to the problem of such "task overruns". The work described in the paper led directly to a significant development in processor design at TTE Systems Ltd (a spin-out company from the University of Leicester). A hardware implementation of the approach has been commercialised in the TTE32 range of products and applied in safety-critical systems.

Further information can be provided by Alan Lamb (former Chair of the TTE Board of Directors): a.lamb@tte-systems.com