B.Korousic, J.E.Cooling, P.Kolbezen.
Predictable hard real-time scheduling.
Proc. 4th EUROMICRO Workshop on Real-Time Systems, pp.196-201, Athens, Greece, June 1992.

The essential feature of hard real-time systems is that the embedded computer must deliver its results correctly and on-time - otherwise malfunction may result. To assure software constructions of such systems a support of a real-time operating system is needed. We present a task scheduling and mutual exclusion protocol as one of real-time operating system structuring mechanisms. The protocol is applicable to aperiodic tasks having specific priority and timing characteristics.