Keywords: MIG, Spartan6, Error:MAP:168, ise_flow.bat, S6
The Spartan-6 FPGA MCB MIG design includes a script file, ise_flow.bat, in the output 'par' directory to run the design through implementation using command line. This script file is missing the -w switch in the MAP command which causes an error if the design has already run:
ERROR:Map:168 - Output file "example_top_map.ncd" already exists. Please
specify -w to overwrite.
ERROR:Map:151 - Problem encountered parsing the command line.
The -w switch overwrites existing files from previous runs. Because this switch is missing, MAP will not execute.
Updating the ise_flow.bat parameters with MIG v3.2
1. MIG generates the ise_flow.bat file in the output "mig_31\example_design\par" and "mig_31\user_design\par" directories.
Go to either of these directories.
2. Open the ise_flow.bat and edit the file. You will need to go to line 12 that starts with "map".
3. Insert "-w" into the line after the "-detail" comment.
4. Save the file, and you should be able to re-run the file.
This issue will be resolved in the next release of MIG in ISE 11.4.