%T Modelling Real\-Time Behaviour of Parallel Transputer Systems under Failure Conditions %A Peter R. Croll, P. M. Griffiths %E Patrick Nixon %B Proceedings of WoTUG\-18: Transputer and occam Developments %X This paper describes work concerning the modelling of transputer The aims and problems of designing real\-time systems are introduced. The key features of the model which are relevant to reliability are discussed. Algorithms for scheduling parallel and mono\-processor real\-time system are explained. Coloured Petri\-nets in general are introduced, and then the key features of the CASE tool Design/CPN are covered. Details of how the model has been implemented, and how the model behaves are given. Conclusions from the work so far are presented, and the outstanding areas of work are discussed.