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AR# 21881

7.1i EDK - "ERROR:Bitgen:42 - Unknown setting "4" for option "ConfigRate"."


Keywords: BitGen, base, system, builder, BSB, Spartan-3

Urgency: Standard

General Description:
When I target my embedded project to a Spartan-3E FPGA, the following error occurs during bitstream creation:

"ERROR:Bitgen:42 - Unknown setting "4" for option "ConfigRate". Please consult
the "BitGen" Section in Chapter Twelve of the Development System Reference
Guide for the appropriate command-line options to create a bitstream file or
consult the "Implementation Options" Section of the Design Manager/Flow
Engine Reference/User Guide for Configuration Template Settings.
make: *** [implementation/system.bit] Error 1


XPS is creating an invalid BitGen options file. Valid options for the "ConfigRate" are 6, 3, 12, 25, 50, 100, with the default being 6. To work around this problem:

- Double-click on the "bitgen.ut" file under the Project Files hierarchy, located in the System tab in XPS
- Change the ConfigRate setting from 4 to 6
- Save and close the "bitgen.ut" file
AR# 21881
Date Created 08/08/2005
Last Updated 04/16/2007
Status Archive
Type General Article