Prioritizing the latency of FPU, it has only 5 stages, and it works at 400 MHz. A FP format specific for HCgorilla is IEEE 754 compatible except the bitwidth representation of FP data. We focus in this article the development of a compact FPU (Floating point number Processing Unit). Considering recent trend of embedded applications like voice recognition, 3D graphics, and image/vision processing, FP hardware is crucial for further enhancing HCgorilla's Java functions. Although it was provided with carefully selected Java byte codes and cipher codes, FP (floating point) expression was omitted due to the restriction of hardware resource. Thus, we exploited the architecture of a hardware cryptography-embedded multimedia mobile processor named HCgorilla by sophisticatedly unifying up-to-date processor techniques. The key to protect huge amount of multimedia data in ubiquitous networks is to introduce safety aware high-performed single VLSI processor systems embedded with cipher process.
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