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AR# 2051

5.2.1 XNFPREP - Errors 7822, 7854 from constraints file TIMESPEC

Description

Keywords: .cst, xmake, tnm, xact-performance, constraint

Urgency: standard

General Description:
When creating a constraints file with a "timespec" line in it, XNFPREP errors 7822, 7854 may occur.

Solution

The diagnosis given in the error message should be checked first. The correct syntax for a TIMESPEC in a .cst file is:

timespec="TS01=FROM:abc:TO:xyz=40";

This goes on a line by itself in a regular ASCII text file.
If you have the proper syntax, and the TNMs exist (abc, xyz in this example), then the problem may be that you have spaces in the TIMESPEC line. The following line may cause problems because of spaces:

timespec="TS01=FROM: abc :TO:xyz = 40";

Refer to (Xilinx Solution 1331) for more information on TIMESPECs in constraints files.
AR# 2051
Date Created 08/31/2007
Last Updated 03/22/2000
Status Archive
Type ??????