11.1 EDK - How do I change implementation options in EDK?

AR#	21791	Search For Another Answer
Topic	EDK-XPS
Last Updated	04/25/2009
Status	Active

Description

Keywords: fast_runtime

How do I modify implementation options in the design?

Solution

To change implementation options for NGDBuild, MAP, Post MAP TRACE, PAR, and Post PAR TRACE, go to the System tab in XPS. Under "Project Files" is a subtitle named "Implementation Options File: etc\fast_runtime.opt". Open this file and insert the additional option in the desired section.

By default, the implementation option settings for the MAP section look similar to the following:

Program map
-o <design>_map.ncd; # Output Mapped ncd file
-pr b; # Pack internal FF/latches into IOBs
#-fp <design>.mfp; # Floorplan file
<inputdir><design>.ngd; # Input NGD file
<inputdir><design>.pcf; # Physical constraints file
END Program map

For example, to add a CLB packing factor of "5" during the MAP stage, modify the above section as follows:

Program map
-o <design>_map.ncd; # Output Mapped ncd file
-pr b; # Pack internal FF/latches into IOBs
-c 5; # CLB Packing Factor: 5 <---------------
#-fp <design>.mfp; # Floorplan file
<inputdir><design>.ngd; # Input NGD file
<inputdir><design>.pcf; # Physical constraints file
END Program map

For incremental design, add the guide file switch "-gf system.ncd" in the PAR section of the implementations options file as described above.