基于UART的物理隔离卡自举程序的开发

Development of bootstrap program for UART-based physical isolation card

本文介绍了基于UART的物理隔离卡的基本原理,重点说明如何开发和安装主引导扇区MBR中的自举程序,使得开机出现内外网选择提示,根据用户的不同选择,配合隔离卡实现内外网的切换,并给出了BIOS环境下内外网选择界面中汉字显示的解决方案。

This paper introduces the basic principle of UART-based physical isolation card, and especially illuminates how to develop and install the bootstrap program in MBR of hard disk. Two options, i.e. inner net and Internet should appear in the screen for choice at the time of bootstrap,the user can select different option to switch between inner net and Internet by the isolation card. Furthermore,the solution to Chinese characters display in BIOS configuration is provided.