COSYMA: a software-oriented approach to hardware/software codesign
Journal of Computer and Software Engineering - Special issue: hardware-software codesign
Multiple-process behavioral synthesis for mixed hardware-software systems
ISSS '95 Proceedings of the 8th international symposium on System synthesis
The Chinook hardware/software co-synthesis system
ISSS '95 Proceedings of the 8th international symposium on System synthesis
Behavioral synthesis: digital system design using the synopsys behavioral compiler
Behavioral synthesis: digital system design using the synopsys behavioral compiler
Synthesis from mixed specifications
EURO-DAC '96/EURO-VHDL '96 Proceedings of the conference on European design automation
Co-Synthesis of Hardware and Software for Digital Embedded Systems
Co-Synthesis of Hardware and Software for Digital Embedded Systems
The Interplay of Run-Time Estimation and Granularity in HW/SW Partitioning
CODES '96 Proceedings of the 4th International Workshop on Hardware/Software Co-Design
Analysis and synthesis of concurrent digital circuits using control-flow expressions
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
A tool for performance estimation of networked embedded end-systems
DAC '98 Proceedings of the 35th annual Design Automation Conference
Methods for evaluating and covering the design space during early design development
Integration, the VLSI Journal
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Embedded systems are typically implemented as a set of communicating components some of which are implemented in hardware and some of which are implemented in software. Usually many software components share a processor. A real-time operating system (RTOS) is used to enable sharing and provide a communication mechanism between components. Commercial RTOSs are available for many popular micro-controllers. Using them provides significant reduction in design time and often leads to better structured and more maintainable systems. However, since they have to be quite general, they are not efficient enough for many applications, either in memory usage or in run times. Thus, it is often the case that RTOSs are hand coded by an expert for a particular application. This approach is obviously slow, expensive and error-prone.In this paper we propose an alternative where a RTOS is automatically generated based on a high-level description of the system. RTOSs created in our approach offer an ease of use comparable to commercial RTOSs, and yet since they are generated for a specific example, they can be optimized based on the same information used to optimize hand-written code. We have implemented our approach within POLIS, a system for HW/SW co-design of embedded system. To evaluate the POLIS-generated RTOS we have developed a prototyping environment which we use to compare POLIS against a commercial operating system.