显卡Framebuffer驱动实现framebuffer只是一个提供显示内存和显示芯片寄存器从物理内存映射到进程地址空间的设备。-Framebuffer graphics framebuffer driver implementation is only a display memory and display chip registers mapped to the process from the physical memory address space of the device.

配置寄存器，在QNX下使用，教你如何使用QNX做内存映射-Configuration register under the QNX, teach you how to use the QNX do memory-mapped