快速滚动和移动的虚拟屏幕

FICTITIOUS SCREEN SCROLLING AND MOVING QUICKLY

本文提出了一种虚拟屏幕的设计方法并研究了适合于虚拟屏幕的滚动和移动技术。在程序设计中，对ＶＧＡ显示卡的寄存器和显存直接进行操作和控制，以保证在虚拟屏幕上建立图形，并实现虚拟屏幕的快速滚动和移动。

The paper puts forward a preliminary plan of fictitious screen and studies the technology fitting for the scrolling and moving of the fictitious screen. In order to scroll and move graphy on the screen quickly, the program operates and controls the register and memory of the VGA card directly.