电网规划软件包中逻辑屏显示技术的开发和应用

Development and Application of Logic Screen Display Technology

在电力系统应用软件图形开发中,面临着如何充分利用EGA/VGA/TVGA提供的资源,在微机屏幕上绘制各种复杂的电力系统电气接线图,或显示大规模区域电网的地理接线图的问题。介绍了EGA/VGA/TVGA的硬件结构及其主要端口寄存器和控制寄存器的访问方法,并提供了可实现大于物理屏的逻辑屏和解决屏幕滚动中出现的抖动问题的解决方案。该程序通过在电网规划软件包的应用,表明了此方法是有效的。

The paper presents a program for obtaining a logic screen which is larger than the physical screen for the EGA/VGA/TVGA hardware structures, and introduces a smoothly scrolling screen, which presents an effective, rapid and smooth scrolling imagine for the power systems software imagines development.