论文部分内容阅读
IEC-625(IEEE-488)接口是电子计算机作联机应用时的一种重要标准接口形式。为国产DJS-130计算机配置IEC-625接口将解决国内发展自动测试的急需,同时为DJS-130计算机开辟了广泛的应用新领域。 本文讨论了DJS-130计算机的IEC-625接口设计中的若干关键问题及其解决办法,包括数传方式、输入输出操作、中断方式及中断处理、接口功能配置、接口本地消息的产生、接口的操作与扩充BASIC语言的关系等。 本文所讨论的问题及其解决,对于其他类型的小型、微型计算机同类接口的设计也具有参考价值。
The IEC-625 (IEEE-488) interface is an important standard interface form for on-line applications of electronic computers. Configuring the IEC-625 interface for domestic DJS-130 computers will solve the urgent need of automatic test development in China and open up a wide range of new application fields for the DJS-130 computer. This article discusses some key issues and solutions in the IEC-625 interface design of DJS-130 computer, including data transmission mode, input / output operation, interrupt mode and interrupt handling, interface function configuration, interface local message generation, interface Operation and expansion of BASIC language relations. The issues discussed in this article and their solution, for other types of small, micro-computer interface of similar design also has reference value.