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This paper describes how the ASSERT Virtual Machine, a dedicated execution platform that guarantees a predictable real-time behaviour, can be used to develop real-time embedded distributed systems with high-integrity requirements. The concept of virtual machine-level software components is developed, and sample programming patterns are provided. Components are used in the framework of the ASSERT development process, and are based on the Ravenscar Computational Model, a concurrent tasking model which can be statically analysed for a correct real-time behaviour. The current architecture of the ASSERT virtual machine is described in detail, and experience gained with its use in the last few years is provided.
Date of Conference: 13-16 Sept. 2010