| 摘要 |
A first microprocessor having a PH1/PH2 pipeline structure is designed. The first microprocessor undergoes a design cycle including microarchitecture, design (e.g. logic design, circuit design, and layout work), verification, qualification, and volume manufacture. Subsequently, a second microprocessor is derived from the first microprocessor by replacing the PH1 and PH2 latches with edge triggered flip flops connected to a clock line which is operable at approximately twice the frequency of the clock signals used in the PH1/PH2 pipeline. A minimal design effort may be employed to produce the second microprocessor. The microarchitecture of the second microprocessor is quite similar to the microarchitecture of the first microprocessor. Still further, much of the design, verification, and qualification work performed for the first microprocessor may be reused for the second microprocessor.
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