基于保护模式下的地铁列车司机显示单元仿真系统

Simulation System of Train Driver Display Unit Based on Protection Mode

介绍了一种在DOS下的32位C/C++保护模式软件开发环境DJGPP的技术特点和应用场合,并通过DJGPP实现了DOS环境下司机显示单元(DDU)仿真系统的开发。结合地铁列车DDU系统的特点,具体说明DJGPP在地铁列车DDU系统仿真中的应用,特别对DDU显示单元和网络通讯的仿真作了详细的分析。分析结果显示,其不仅有效突破DOS传统内存的束缚,同时结合图形/声音编程序库Allegro,可以很好地实现地铁DDU显示单元的仿真,同时为DDU显示单元的国产化提供一条有效途径。

The technical character and application of a nonproprietary environment DJGPP for developing the 32 - bit protected mode software are in C/C ＋ ＋ under DOS, then a subway train DDU emulating system is developed by DJGPP. By combining the character of train DDU system, this paper specities the application for the subway train DDU simulating system, analyses the simulation of display unit and network communication of DDU system in details.