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Reducing the size of a program is a major goal in modern embedded systems. Large code occupies more space in the Chip and also causes higher power consumption because of increased memory traffic. In this paper, a revised architecture is proposed for embedded processors by replacing the Load-store Architecture with Register-Memory Architecture for selected instructions. Analysis of RISC object code for Embedded Applications, using an offline tool developed by the authors, establishes the scope for a new class of processor exclusively for embedded applications. The authors have used this tool to simulate Register-Memory Architecture for MIPS processor. Based on the results, MIPS processor's instruction set is enhanced with 12 new instructions of Register-Memory Architecture.
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