Answers Database
1.5i Map - FATAL_ERROR:xvkma:xvkmapper.c:1691:1.113 - Cannot satisfy LOC/RLOC constraint
Record #5824
Product Family: Software
Product Line: FPGA Implementation
Product Part: map
Product Version: 1.5is1
Problem Title:
1.5i Map - FATAL_ERROR:xvkma:xvkmapper.c:1691:1.113 - Cannot satisfy LOC/RLOC constraint
Problem Description:
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.
Solution 1:
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)
End of Record #5824 - Last Modified: 05/18/99 13:36 |
