Floating point processing unit integrated circuit and method of a risc processor
A processing unit and integrated circuit technology, applied in machine execution devices, concurrent instruction execution, etc., can solve problems such as many logic modifications, reduced instruction execution performance, and poor generality of integration methods, achieving wide selectivity and design logic changes. Small, floating point integrated structure for clear effect
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[0051] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.
[0052] The present invention aims at a processor with a seven-stage pipeline (instruction fetching stage, decoding stage, register access stage, execution stage, memory access stage, exception processing stage and data write-back stage), in order to make fixed-point instructions and floating-point instructions run efficiently.
[0053] First, if figure 1 As shown, on the basis of the seven-stage fixed-point pipeline, the instruction fetch stage, the decoding stage, the register access stage, the execution stage, the memory access stage, the exception handling stage, and the data write-back stage, the other six stages except the instruction fetch stage are added. The floating-point pipeline includes the decoding stage, register access stage, execution stage, memory access stage, exception hand...
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