General Description: When you specify a Signature under the Programming tab in the Implementation options dialog, you get this message:
hprep6 -i fe_temp -r jed -a -l christes.log -n signature_str
Programming File Generator: version M1.5.19 (c) Copyright 1989-1997 Xilinx Inc. All rights reserved. Signature length is limited to 4 characters, using 'sign'.
Solution
1
The workaround is to leave the default "Use <design name>" option and change the actual name of the project. The signature will then be the first 4 characters of the project name.
This is a software error which has been fixed in the latest 1.5 service pack currently available on our website.
Another workaround: * Run the flow engine all the way through * Go back one step * Use the command line: hprep6 -i fe_temp -r jed -a -l logfile.log -n test
This will use the 4 characters: test as your signature.