8251芯片功能的vhdl描述，可以在Quartus下综合

微机接口课程设计实验报告,实验一：8255动态LED数码显示实验,实验二：8251串行接口实验,附程序清单-Computer Interface Designed curriculum experimental reports, one experiment: 8255 Dynamic LED digital display experiment two: 8251 serial interface experiments, attached to the list of procedures