> libusb 1.0 uses WinUSB, which I am not sure is
> available in Windows XP (I guess so, you might find some info in the
> libusb.org website)

It seems it is supported since WinXP SP2:
  http://msdn.microsoft.com/en-us/library/ff540196.aspx
but some specific files need to be installed.
I missed this part... I'll try tomorrow with Windows 7.

> and libusb-win32 has its own device driver, which
> I am sure runs on Windows XP.

Unfortunately, it makes the Cygwin Python interpreter to crash on my machine.

Have you run the tests with a native Python interpreter or with the Cygwin port?
I'd like to stick to the tested configuration for now.

> Anyway, you have to install the device driver for your peripheral.

This is what I did: I've installed the D2XX Windows drivers (latest
release) available from the FTDI web site.
My understanding is that for libusb-1.0 at least, if these original
drivers are installed, there's no need to install another device
driver. I'll double-check

Thanks for your help,
Manu

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