Digit-Serial Computation
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Most of reconfigurable processors are adopting bit-parallel computation. On executing a program on such a reconfigurable processor, since bit-parallel computation require more hardware than bit-serial one, programs are often divided into several configuration and executed sequentially, which cause large overhead on performance. To solve the problem, we have developed a reconfigurable processor based on bit-serial operation, which can execute more operations in a reconfigurable part enough to prevent such a division of configuration and keep the chip area small. This paper shows that a reconfigurable processor based on bit-serial computation achieves higher performance than the traditional one based on bit-parallel computation under the condition of same chip area, by the evaluation using median filter as benchmark program.