USB的prefix是COM,Order是0..<br />而三串口的注册表项里,prefix是COM,Order是0,都是一样的,三串口的注册表项如下:<br />[HKEY_LOCAL_MACHINEDriversBuiltInSER2440]<br /> "DeviceArrayIndex"=dword:0<br /> "Irq"=dword:03<br /> "IoBase"=dword:50000000<br /> "IoLen"=dword:2C<br /> "Prefix"="COM"<br /> "Dll"="SER2440.Dll"<br /> "Order"=dword:0<br /> "Index"=dword:1<br /> "Priority"=dword:0<br /> "Port"="COM1:"<br /> "DeviceType"=dword:0 <br /> "FriendlyName"="Serial Cable on COM1"<br /> "Tsp"="Unimodem.dll"<br /> "DevConfig"=hex: 10,00, 00,00, 05,00,00,00, 10,01,00,00, 00,4B,00,00, 00,00, 08, 00, 00, 00,00,00,00<br /><br />[HKEY_LOCAL_MACHINEDriversBuiltInSER2440_2]<br /> "DeviceArrayIndex"=dword:1<br /> "Irq"=dword:17<br /> "IoBase"=dword:50004000<br /> "IoLen"=dword:2C<br /> "Prefix"="COM"<br /> "Dll"="SER2440.Dll"<br /> "Order"=dword:0<br /> "Index"=dword:2<br /> "Priority"=dword:0<br /> "Port"="COM2:"<br /> "DeviceType"=dword:0 <br /> "FriendlyName"="Serial Cable on COM2"<br /> "DevConfig"=hex: 10,00, 00,00, 05,00,00,00, 10,01,00,00, 00,4B,00,00, 00,00, 08, 00, 00, 00,00,00,00<br /><br />[HKEY_LOCAL_MACHINEDriversBuiltInSER2440_3]<br /> "DeviceArrayIndex"=dword:2<br /> "Irq"=dword:09<br /> "IoBase"=dword:50008000<br /> "IoLen"=dword:2C<br /> "Prefix"="COM"<br /> "Dll"="SER2440.Dll"<br /> "Order"=dword:0<br /> "Index"=dword:3<br /> "Priority"=dword:0<br /> "Port"="COM3:"<br /> "DeviceType"=dword:0 <br /> "FriendlyName"="Serial Cable on COM3"<br /> "DevConfig"=hex: 10,00, 00,00, 05,00,00,00, 10,01,00,00, 00,4B,00,00, 00,00, 08, 00, 00, 00,00,00,00
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