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In recent years, the automotive industry has seen a rapid increase in the “on-board electronics content” of vehicles. Such technology has given rise to ever increasing levels of safety, comfort and performance in this high production-volume industry. Cost considerations require that most on-board electronics be implemented on fixed-point processors. As companies look to extract more (performance) for less (implementation costs & lead time) the job of designing on-board fixed-point application software is becoming more and more challenging. This paper discusses the use of fixed-point design tools that were recently introduced in the MATRIXx® product family. These tools feature a high-performance fixed-point simulator, and a kit of interactive tools that enable engineers to study signal ranges and overflow/underflow conditions. Tools to perform trade-off studies between performance and fixed-point attributes are also discussed.

The use of the SystemBuild™ environment for modeling a continuous engine coupled with an event based controller is presented in this paper. The example makes use of a recently developed interface between the SystemBuild simulator and pSOSim™, a simulator for embedded tasks based on the pSOS+™ real-time operating system. This integration allows high fidelity simulation of asynchronous and periodic controller tasks running on a real-time embedded kernel in an automotive environment.