在FPGA上对OC8051 IP核的修改与测试

80C51系列单片机是由不同公司推出的单片机,它们与Intel公司的MCS-51完全兼容,具有相同的指令系统、地址空间和寻址方式。本文在分析一款OC8051IP核的基础上,给出一种仿真调试方案（用于查找与定位原IP核的逻辑错误）,以及具体的修改方法;并基于FPGA完成了修改后IP核的下载测试。测试结果表明,该IP核运行正常,初步满足实际的应用需求。

Modification and Test of 0C8051 IP Core on FPGA

80C51 family microcontrollers are made by different corporations. They are compatible with Intel MCS-51,and have the same instruction set, address space and addressing method.After analyzing an OC8051 IP core, an emulation and debugging scheme is proposed to locate logic errors of the original IP core, and corresponding modifications are given. Test of the modified IP core is based on FPGA,and the result indicates that the modified IP core runs properly and meets the needs of practical applications.