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DOS环境下的应用程序使用的是640kB字节的常规内存,但640kB的内存容量往往不能满足实时性高、数据量大的数据采集系统的要求,从而对扩展内存的申请、使用成为实现这一应用的必须。该文说明了扩展内存的使用规范,并结合“平轮探测系统”的数据采集模块的开发来演示它的应用。
DOS environment applications use 640kB bytes of conventional memory, but the memory capacity of 640kB often can not meet the requirements of real-time high data volume data acquisition system, thus expanding the application of memory to use to achieve this Application must be. This paper describes the use of extended memory specifications, and combined with the “flat wheel detection system” data acquisition module development to demonstrate its application.