摘要
本文利用一片８２５５Ａ，完成了ＡＰＰＬＥⅡ机与ＴＰ８０１单板机之间的并行双向数据通讯．文中重点讨论了调试过程中遇到的硬件问题及具体的解决办法．
This paper completes parallel double data communication between the Apple Ⅱ and the TP801 using a 8255A.The problem of hardware during debugging and the resolving method is discussed, and the realization processing of double data communication is given, too.
