Cyclone V SE Pulldowns on QSPI I/F. Why?

Hi guys.

I found an old adapter board which breaks out the JTAG, QSPI and configuration memory interfaces so that they can be connected to with standard connectors as the board is too small for these connectors to be provided.

There are 200R pulldown resistors on the four QSPI data bus signals and also on the clock signal. 

Has anyone else come across this? Do you know what it is for?

Thanks,

Ian