Answers Database
1.5i SP2 Virtex Map - Crash during map.
Record #6728
Product Family: Software
Product Line: FPGA Implementation
Product Part: map
Product Version: 1.5is2
Problem Title:
1.5i SP2 Virtex Map - Crash during map.
Problem Description:
A case has been seen where map crashes on a Virtex design in 1.5i SP2.
The problem is related to the packing of carry chains.
Solution 1:
A work around for this case is to set the environment variable
"XVKMA_NO_CARRY_CHAIN_PACK" which disables the map stage
that leads to the crash. The workaround will cause increase in # of slices
and possibly slower timing.
The problem is fixed in version 2.1i which is set to begin shipping at the end of June.
End of Record #6728 - Last Modified: 06/14/99 10:48 | 
