循环冗余校验在SOPC中的自定义指令实现

Realization of the Cyclic Redundancy Check through User-defined Custom Instructions on SOPC

NIOSⅡ软核处理器是Altera公司一款灵活高效的嵌入式处理器,常应用于控制和通信领域。循环冗余校验(CRC)广泛应用于各种数据校验中。本文通过NIOSⅡ的自定义指令,成功地将循环冗余校验并行算法在FPGA上实现。结果表明,加快了专项任务的执行,提高了系统的效率。

Nios II embedded processor is a general-purpose RISC processor core, and is widely used in the field of control and communications. The Cyclic Redundancy Check (CRC) is widely applied in data check. The paper described the implement scheme of CRC parallel algorithmic in Nios II system. The algorithmic was successfully carried out in FPGA through the user-defined custom instructions and made the system efficiency improved.