Description

Keywords : 3.1i, modular design, top level, floorplan, NGDBuild, ngdbuild, 393, AREA_GROUP, GRP0 

After creating an area group in the top level Floorplan of a modular design and writing out a UCF file, 'INST GRP0 AREA_GROUP = FPAG_GRP0;' appears in the UCF file. This causes an error in NGDBUILD: 

ERROR:NgdBuild: 393 - Could not find INST(S) 'GRP0' in design 'top'. INST entry is 'INST GRP0 AREA_GROUP = FPGA_GRP0;').

Solution

To workaround this issue, the following line needs to be removed or commented out of the UCF file: 

INST GRP0 AREA_GROUP = FPGA_GRP0; 

This line can be commented out with the addition of a #: 

 #INST GRP0 AREA_GROUP = FPGA_GRP0; 

This change is available in the latest 3.1i Service Pack available at: 

http://support.xilinx.com/support/techsup/sw_updates/