32位桶式移位寄存器FPGA实现

32-bits barrel shifter implementation with FPGA

桶式移位寄存器是CPU中常用的一个部件,在集成电路设计中通常用晶体管实现。随着FPGA的性能的提高和推广,许多用户开始用FPGA实现微处理器的功能,其中桶式移位寄存器的设计对系统的性能有较大的影响。本文提出了三种桶式32移位寄存器的设计和实现方法,给出了实现结果。

P, arrel shifter is an important unit of CPU, which is implemented in transistors in integrated circuit. With the development of FPGA, many customers implement microprocessors with FPGA, the barrel shifters is a key factor to the performance of microprocessor. The paper presents three methods to implement a 32 - bits barrel shifter with eight functions and the results are also given in the paper.