10.1 Floorplan Editor - Dragging and dropping a level of hierarchy is generating incorrect constraints

AR#	31531	Search For Another Answer
Topic	SW-Floorplan_Editor
Last Updated	09/03/2008
Status	Active

Description

Keywords: RAMB16, RAMB32

When I drag and drop a level of hierarchy from Floorplan Editor into the design, a single location is added for FIFOs and block RAMs.

Here is an example of a constraint that Floorplan Editor creates:

AREA_GROUP "AG_example" RANGE = SLICE_X17Y245:SLICE_X12Y240,FIFO16_X1Y30;

Solution

The tools are expecting a range and are receiving a single location.

To work around this issue, manually edit the UCF to read:

AREA_GROUP "AG_example" RANGE = SLICE_X17Y245:SLICE_X12Y240,FIFO16_X1Y30:FIFO16_X1Y30;

This issue is scheduled to be fixed in Service Pack 3 for ISE 10.1.