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The USB SERIAL emulation driver is provided with two sample instalation files (.inf files)
During the installation phase, only one should be provided to the system :
- The PhSerUsbMdm.inf installs the driver in the MODEM class
- The PhSerUsbPort.inf installs the driver in the PORT class (virtual COM port)

The modem is a WINMODEM. MODEM parameters provided in [PhSerUsb.AddReg] and [MfgAddReg] can be adjusted depending on the functionalities of the USB device. See Windows DDK "writting a MODEM inf file" section for more information about these fields.


The USB device identification is configured in the [Models] section for PhSerUsbMdm.inf and in the [PHILOG.Mfg] section for PhSerUsbPort.inf
The exact USB vendor Id and USB product ID of your device must be set in replacement of the current values specified in the file (USB\VID_xxx&PID_yyyy fields).
The MI_zz value specify the USB device interface implementing the serial emulation. Thus the sample .inf files are designed for a device implementing two virtual COM ports.

If your device is not a multifunction device, the '&MI_zz ' part should be supressed.

the text between % % is used to associate caracters strings that will be displpayed in the device manager. The strings are defined in the [Strings] section at the end of the .inf file.
Both sring identifier (text between %%) and string can be modified to match device description.


