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Microprocessor without Interlocked Pipeline Stages : FOLDOC | Microprocessor without Interlocked Pipeline Stages (MIPS) A project at Stanford University intended to simplify processor design by eliminating hardware {interlocks} between the five pipeline stages. This means that only single execution cycle instructions can access the thirty two 32-bit general registers, so that the compiler can schedule them to avoid conflicts. This also means that LOAD/STORE and branch instructions have a one-cycle delay to account for. However, because of the importance of multiply and divide instructions, a special HI/LO pair of multiply/divide registers exist which do have hardware interlocks, since these take several cycles to execute and complicate instruction scheduling. The project eventually lead to the commercial MIPS R2000 processor. (1995-02-09)
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