When I instantiate my ML403 EDK project inside of ISE, I receive the following error message:
ERROR:Place:850 - Delay element
_v4_phy_dq_iob.v4_dq_io b/dq_q1" has been placed at ILOGIC_X0Y60, however, the delay controller that calibrates this element has not been
used. If a delay controller has been instantiated and a location constraint has been applied to it, please constraint this delay element to the same region. If a delay controller has not been instantiated, please instantiate one. Please refer to the usage document to use the delay controller efficiently.
This problem has been fixed in the latest 10.1 Service Pack available at:
The first service pack containing the fix is 10.1 Service Pack 3.