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To meet the demands of emerging new multimedia and communications applications, Intel has extended its instruction set architecture with MMX Technology. The incorporation of SIMD extensions into an existing instruction set and the enhancement of an existing microprocessor are discussed. The goals, technology, and tradeoffs in the definition of the instruction set architecture are discussed. The first processor to implement these new instructions, the Pentium Processor with MMX Technology, is also described. Its pipeline is discussed as well as the specific tradeoffs in optimizing it for multimedia operation.
Bob Dreyer helped lead the architecture definition for MMX(TM) Technology. Prior to that he managed the Intel486(TM) architecture group and was one of the original architects of the Pentium(R) processor. Bob holds a B.S.E. in Electrical Engineering and Computer Science from Princeton University and has been with Intel for 9 years. He presently leads a group in Intel's Microcomputer Research Labs working on algorithms for emerging applications where he is interested in information management and visual datamining.