此程式可在DOS下讀寫4G記憶體的範例。

在DOS利用Watcom c++的保护模式4G内存，可以在VESA的640X480X256下直接写屏幕，支持鼠标和汉字点阵显示。-In DOS using Watcom c++ of the protected mode 4G memory, VESA can directly write the 640X480X256 screen, support for mouse and Chinese characters dot matrix display.

dos turbo c big real mode 4g memory dump

存储器的访问，程序可以访问4G字节，工作时不必保护模式。-// 4G Memory Access// This Program Can Access 4G Bytes in DOS Real//Mode,Needn t in Protection Mode It Works.