Dynamic Code Overlay of SDF-Modeled Programs on Low-End Embedded Systems

Provided by: edaa
Topic: Storage
Format: PDF
In this paper, the authors propose a dynamic code overlay technique of Synchronous Data-Flow (SDF) - modeled program for low-end embedded systems which lack MMU-support. With this technique, the system can utilize expensive SRAM memory more efficiently by using flash memory as code storage. SRAM is divided into several regions called overlay slots. A data-flow block or a cluster of data-flow blocks is loaded into the corresponding overlay slot on demand at run-time. Which blocks are clustered together and which overlay slots are allocated to the clusters are statically decided by the clustering and placement algorithm.

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