How to efficiently implement dynamic circuit specialization systems
ACM Transactions on Design Automation of Electronic Systems (TODAES)
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Parameterizable configurations are regular FPGA configurations in which some of the configuration bits are expressed as Boolean functions of a set of parameters. These configurations can be rapidly transformed to a specialized configuration by evaluating the Boolean functions for a specific set of parameter values and are therefore ideal for use in run-time reconfigurable systems. To accommodate the use of parameterizable configurations in commercial FPGAs, the concept of the Parameterizable Bitstream was introduced. In this paper, we introduce a hardware implementation that evaluates the Parameterizable Bitstream based on a stack machine architecture. We enabled fast generation of specialized configurations with a significant reduction in resources (80%) in comparison to the MicroBlaze soft processor when it is used as a configuration generation engine.