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AR# 8818

3.1i XST - WARNING: (DM__0025). Unknown property "maxfanout". Ignoring.


Keywords: XST, attribute, maxfanout, max_fanout, DM__0025, warning

Urgency: Standard

General Description:
When using the "maxfanout" attribute in a synthesis constraint file, I receive the following warning:

WARNING: (DM__0025). Unknown property "maxfanout". Ignoring.


This is an inconsistency error. The attribute in ISE 3.1i is "max_fanout."

However, if you are running XST in command-line mode, then the attribute is "maxfanout."

Furthermore, if you wish to put this constraint in the HDL code, the constraint is "max_fanout."

NOTE: This problem is fixed in the 4.1i software release.
AR# 8818
Date Created 03/15/2000
Last Updated 08/20/2002
Status Archive
Type General Article