This paper analyze the working procedure of this type of Video Blaster, and by using extended memory, cature the image data in DOS envioriment from it.

• 分析了视霸卡的工作过程，用对扩展内存编程的方法，解决了在DOS环境下取得了视霸卡中的图象数据，图像清晰，无任何失真。