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This paper describes the MetaCore system which i s a n ASIPApplication-Speci c Instruction set Processor development system targeted for DSP applications. The goal of MetaCore system is to o er an e cient design methodology meeting speci cations given as a combination of performance, cost and design turnaround time.MetaCore system consists of two major design stages: design exploration and design generation. In the design exploration stage, MetaCore system accepts a set of benchmark programs and a formal speci cation of ISAInstruction Set Architecture, and estimates the hardware cost and performance for each hardware con guration being explored. Once a hardware con guration is chosen, the system helps generate a VLSI processor design in the form of HDL along with the application program development tools such as C compiler, assembler and instruction set simulator. Flags ALUAddr. Reg. AGU Address ALUAddress ALU

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