Answers Database
2.1i 4K* Map - Packing error fails to list the comps involved.
Record #7795
Product Family: Software
Product Line: FPGA Implementation
Product Part: map
Product Version: 2.1i
Problem Title:
2.1i 4K* Map - Packing error fails to list the comps involved.
Problem Description:
Urgency: Standard
General Description:
A case has been seen where using the .mfp file results in a pack error that does
not list the components involved.
ERROR:OldMap:532 - Unable to obey design constraints which require the
combination of the following symbols into a single CLB:
There are two resources that require the F function generator. These symbols
share the same LOC parameter.
Solution 1:
The reason no symbols are listed is that none of the symbols getting packed into
the CLB are of a type that can be constrained and get reported on (flops, latches,
carry, RAM, ROM,FMAPs, HMAPs, etc.). These appear to be wide AND gates,
which are not normally allowed to have constraints. Is appears that the Floorplanner
is constraining something it shouldn't.
End of Record #7795 - Last Modified: 10/07/99 12:32 |
