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目前,计算机使用的测试语言尚未达到国际标准化,编程格式也不完全统一.因此,常用的计算机,特别是国内使用的几种主要机型,都未带IEC—IB接口,给组建各式自动测试系统带来一定的困难.本文的目的在于,探讨用8位并行输入/输出接口芯片,实现Z80系统对IEC—IB的接口功能.这种接口技术可使用于国内常用的一些Z—80微型机或单板机,也可用Z80—CPU、PIO等数片集成电路芯片组成简单的硬件逻辑设备.
At present, the test language used in computers has not yet reached the international standardization, programming format is not completely unified.Therefore, commonly used computers, especially the use of several major domestic models, did not bring IEC-IB interface to the formation of various types of automatic test System brings some difficulties.The purpose of this paper is to explore the use of 8-bit parallel input / output interface chip to achieve Z80 system IEC-IB interface functions.This interface technology can be used in some of the commonly used Z-80 micro-computer Or single-board machine, but also can be used Z80-CPU, PIO chip integrated circuit chip composed of simple hardware logic devices.