本文讨论了25针零调制解调器电缆。
为了设置调试环境，拥有正确的零调制解调器电缆是非常重要的。
It is very important that you have the correct null modem cable with you to set up the debugging environment.
开始之前，请确保已使用零调制解调器电缆将开发计算机和目标计算机连接起来。
Before starting, make sure that you have connected the null modem cable between the development and target machines.
零调制解调器电缆是一种允许在两个串行端口之间发送数据的串行电缆。
A null modem cable is a serial cable that allows data to be sent between two serial ports.
如果您希望使用9针零调制解调器电缆，请参见参考资料部分以了解有关零调制解调器设置的详细信息。
If you want to use 9-pin null modem cabling, see the Resources section for more information about null modem setup.
当您使用零调制解调器电缆在两台计算机之间建立直接串行连接时，您的电缆必须按下面清单1中显示的方式连接。
When you use a null modem to make a direct serial connection between two computers, your cable must be wired, as shown in Listing 1 below.
有一点很重要，那就是要使用零调制解调器电缆，如果您使用普通的串行电缆，目标计算机则期望与串行设备通信，而不是与另一个串行端口通信，这样您就无法调试该计算机。
It is important that you use a null modem cable; if you use a typical serial cable, the target computer expects a serial device and not another serial port, and you cannot debug the computer.
零调制解调器 (Null modem)是一种使用RS-232串行电缆连接两台计算机的通信方式。
Null modem is a communication method to connect two computers directly using a RS-232 serial cable.
零调制解调器 (Null modem)是一种使用RS-232串行电缆连接两台计算机的通信方式。
Null modem is a communication method to connect two computers directly using a RS-232 serial cable.
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