如何利用EMS规范使用扩展内存

How to Make Use of the Expanded Memory by EMS

PC计算机上一般都配有若干兆字节的扩展内存,但在MS-DOS控制下没法直接使用.利用EMS规范是在MS-DOS控制下使用扩展内存的最好方法之一.本文介绍了EMS规范、功能和调用格式,给出了用汇编语言写的可直接供C语言调用的使用扩展内存的接口程序及调用该接口程序的C程序实例.

Some mega-bytes of the expanded memory are often attached to PC computers.But it is impossible to make direct use of the expanded memory under the control of the MS-DOS operating system.One of the best uses of the expanded memory is to make use of EMS.This paper presents the EMS specification, funcion and call mode, and shows the interface of using expanded memory, which,written in assembly language is called directly by C language.The paper also provides an example of calling the interface by C language.