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Experiments around SPARC LEON-2 for MPEG encoding

Auteur(s) : P. Guironnet de Massas, P. Amblard

Doc. Source: International Conference Mixed Design of Integrated Circuits and Systems (MIXDES’06)

Publisher : Tech. Univ. Lodz, Lodz, Poland

Pages : 285-289

In this paper, we will present a modified implementation of the SPARC_ V8 architecture with multimedia oriented instructions. The purpose of the global project is to improve video compression performances without designing a dedicated co-processor or using an expensive System on Chip. In this project we investigate the complexity of modifying a standard processor. We implemented 12 new instructions and use some of them to optimize an algorithm of ’Sum of Absolute Difference’. The result was a performance increase by 70% in the execution of this algorithm, allowing us to expect 30% speedup in the execution of a MPEG video compression. The area increase of the integer unit is about 18% and the clock frequency is not significantly modified in a LEON-2 implementing 5 from 12 of the new instructions.