Answers Database

Flow Engine M1: Using a user-modified PCF file


Record #2315

Product Family:  Software

Product Line:  FPGA Core

Problem Title:
Flow Engine M1: Using a user-modified PCF file


Problem Description:
Keywords: modify, PCF, overwrite

Urgency: Standard

General Description:
PCF files are always regenerated during the Map stage when implementing a
design under Flow Engine.  This means that you cannot modify your PCF
file, then create a new revision in Design Manager so that it uses the
new PCF file.  Flow Engine also does not offer the ability from the GUI
to specify a user-modified PCF; it always uses the default filename.


Solution 1:

The PCF file must be modified (or substituted) after the Map stage but
before the Place&Route stage.

1. In Flow Engine, select Options->Stop After.	Set Map as the stop-after
   point, and click OK.

2. Run the implementation flow as usual.  Implementation will stop after
   Map is completed.

3. Modify the PCF file as required.  The PCF file is located at:

      <work_dir>/<version>/<rev>/<design>.pcf

   underneath the design directory.  For example:

      xproj/ver1/rev1/calc.pcf

4. Run the implementation again to complete the design flow.



End of Record #2315