网络安全隔离卡的工作原理是:利用PCI总线的扩展ROM机制，在隔离卡上

网络安全隔离卡的工作原理是:利用PCI总线的扩展ROM机制，在隔离卡上嵌入扩展程序，开机后，扩展程序先取得控制权，出现选择内外网的图形界面。当扩展ROM接收到用户的选择后，通过读取当前的网络状态，如果与选择的不匹配，则通过端口向物理隔离模块发出切换选择，由继电器实现硬盘以及内外网的切换。如果匹配，则将控制权交给选中的硬盘引导程序，启动操作系统，进入相应的网络环境[4]。

結果 (英文) 1:

Network security separate works are: using PCI bus extension ROM mechanism embedded on the quarantine tab Extender after startup, extension program to gain control, select graphical interface for internal and external network appears. When the extension ROM after receiving the user's choice, by reading the current network status, if does not match selected are sent to physical isolation module through port switch selection, hard disks, as well as internal and external network implemented by a relay switch. If it matches, then transfers control to select the hard disk boot program, boot the operating system, enter the appropriate network environment [4].

結果 (英文) 2:

Network security isolation card works is: the use of PCI bus expansion ROM mechanism embedded in the isolation card expansion program, boot, extensions to obtain control, there graphical interface to select the external network. When the extended ROM receives the user's choice, by reading the current network status, if the selection does not match, then toggle through the port issued to physical isolation modules, hard drives and external network switch is implemented by the relay. If they match, then the control to select the hard disk boot program, start the operating system, enter the appropriate network environment [4].

結果 (英文) 3:

The working principle of network security isolation card is: using the extended ROM mechanism of PCI bus, the expansion program, in isolation card embedded boot, to extend the program first obtains control, choice of inside and outside network graphic interface. When the expansion ROM receives the user's selection, by reading the current state of the network, if with no matching selection, through the port to the physical segregation module sends out the switch selection, by the relay to realize hard disk and switch inner and outer net. If the match, it transfers control to the selected disk boot program, start the operating system, into the corresponding [4] network environment.