FATAL_ERROR:xvkma:xvkmapper.c:1691:1.113 - Cannot satisfy LOC/RLOC constraint on comp $I30/$1I79/$I30/I7 Process will terminate. Please call Xilinx support.
A case has been seen where map can not pack a configuration where a CYMUX drives an FMAP equivalent to a 2 input XOR.
This is a problem with XORCY conversion code, the user has a FMAP which after simplification (constant pushing, etc), becomes a 2 input XOR gate, which happens to have one of the input driven by a CYMUX. We convert it to XORCY and thus prevent it from being packed into the desired slice.
This problem can be worked around by seeting the following environment variable which forced the use of a different carry merge algorithm:
setenv XVKMAP_OLD_CARRY_MERGE 1 (work stations) set XVKMAP_OLD_CARRY_MERGE=1 (PCs)