摘要
本文介绍了Super AT微机异步通信适配器的核心INS8250异步通信控制器的内部寄存器格式内容的设置和应用,中断向量的计算。并叙述了Super AT微机的RS—232C接口与STD—BuS工业控制机的TP STD8802板上的RS—423A接口的异步串行通讯的编程方法。
This paper introduces the installation and application of the internalregister's formal content of INS 8250 asynchronous communication controlunit, which is a central part of super AT microcomputer' s asychronous com-munication adapter. The calculation of the interruption vector it also discu-ssed. It also relates the programming method of asynchronous serial commu-nication between super AT microcomputer's RS-232C interface and STD--BUSindustrial unit RS-423A interface on TP STD 8802 board.
