When validating a Fixed Pinout in the MIG GUI you may see the following error message:
"Error: All Mask ports should be allocated in single bank."
Check that you have all Data Mask pins located into a single bank, but also check that each Data Mask pin is placed into the same byte lane as their corresponding data pins.
DM should be located in the same byte lane as either DQ[8:0] or DQ[17:9] and DM should be located in the same byte lane as DQ[26:18] or DQ[35:27] for a x18 device.
Additional explanation of this pin-out violation will be provided in a future release.
04/03/2013 - Updated to include link to 54025
10/16/2012 - Initial release