I have an example from ALTERA about PCIe. The device it used is 5CGTFD9E5F35C7 and compiled successfully. But when I changed the device to 5CGTFD5F5M11C7 ,it failed. I think this example is suitable for all CYCLONE V GT device, no matter the pins it has or something else ,but why it compile fialed. So I want know the reason and how to deal with it. Thanks for your answer.The annex is the error report list by quartus.