8087协处理器CMOS单元库的设计

The Design for CMOS Cell Library of 8087 Math Coprocessor

在对8087协处理器芯片进行剖析的基础上,我们对电路的逻辑进行了提取,分析了电路的功能,并对部分功能进行了仿真验证。将其中的全加器单元NMOS电路改为CMOS电路,本文以此为例,介绍了将NMOS电路改为CMOS电路时,建立CMOS单元库的流程及应注意的问题。

On the base of the analysis of 8087 layout, we abstract the schematic of 8087 math coprocessor, analysis the function of the circuit, and test parts of the function. Alter the full adder cell from NMOS circuit to CMOS circuit. Basing on it, the paper introduces the design flow of converting NMOS circuit into CMOS circuit and some questions of the design.