Answers Database
A1.5/F1.5 CPLD - Signature/User Code always generates "sign" when not using default option.
Record #4770
Product Family: Software
Product Line: CPLD Implementation
Product Part: hprep6
Product Version: 1.5
Problem Title:
A1.5/F1.5 CPLD - Signature/User Code always generates "sign" when not using default option.
Problem Description:
Urgency: Standard
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.
http://support.xilinx.com/support/techsup/sw_updates/
Solution 2:
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.
End of Record #4770 - Last Modified: 12/28/99 15:50 | 
