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本文介绍一种微机数据交换系统。该系统参考OSf基本模式设计,适合目前国内IBM—PC/XT微机通信状况。系统在假脱机方式下通信,软件设计上大量采用中断窃权的办法。文章还针对PC机执行双用户/双任务工作时,容易发生磁盘瓶颈效应的现象,介绍了解决磁盘I/O瓶颈效应的方法。 系统采用半双工制式异步串行通信,速率为50～9600bit/S任选。网络结构采用全通型〔无线、有线〕、总线型〔有线〕或辐射型〔报线〕。用户根据需要可进行选址和全址通信,以实现微机远程磁盘文件拷贝。
This article describes a computer data exchange system. The system reference OSf basic model design, suitable for the current domestic IBM-PC / XT microcomputer communication status. The system communicates in a spooled mode, a lot of ways to interrupt the theft of theft are used in software design. The article also aims at the phenomenon that disk bottleneck is easy to occur when performing dual-user / dual-task work on a PC, and a method for solving the bottleneck effect of disk I / O is introduced. The system uses half-duplex asynchronous serial communication, the rate of 50 ~ 9600bit / S optional. The network structure using all-pass type [wireless, wired], bus type [wired] or radiation [reported]. Users can be based on the site selection and full site communication, in order to achieve computer remote disk file copy.