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本文在分析IBM—PC/XT微机逻辑原理后,提出了几种只对其逻辑电路稍作改动,即可将其内存容量从256KB或512KB扩至640KB或更多的简单方法。经一年的实践证明此法经济、实用。
After analyzing the logic principles of IBM-PC / XT microcomputer, this paper presents several simple methods to expand its memory capacity from 256KB or 512KB to 640KB or more only by slightly changing its logic circuit. After a year of practice that this method is economical and practical.