We propose the real-time processing of the multimedia data using a special purpose processor. We introduce a VLIW architecture and the hardware stack to our multimedia processox Our processor (VLIW-Hardware Stack Processor; in short VLIW-HSP) consist of four hardware stack units (HSUs) and one control unit (CU). In this papeqwe discuss the real-time multimedia data processing using VLIW architecture. We show a design of the VLNV-HSP and several pegormance evaluations using the sopware simulator of the VLIW-HSI? The results of these evaluations indicate that the hardware stack achieves typically 20 % speed improvement. We describe a hardware emulator of the VLIW-HSP using Xilinx FPGA which is necessary for the pe@ormance evaluation at application level.

Multimedia data processing is expanding due to speedier networks and bigger storage devices. The authors propose a VLIW hardware‐stack processor (VLIW‐HSP) as a special‐purpose processor for multimedia data processing. The proposed processor uses VLIW architecture for SIMD‐type parallel data processing, and the hardware stack ensures efficient processing of multimedia data. Explained in the following are VLIW‐HSP design and results of performance evaluation using a software simulator. The simulation results suggest that SIMD processing performance increases in nearly direct proportion to the number of ALUs, and the hardware stack offers performance improvement of 10 to 30%. In addition, a system designed for application‐level performance evaluation using FPGA is described. © 1999 Scripta Technica, Syst Comp Jpn, 30(10): 34–40, 1999

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