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AR# 15902

5.1i Incremental Design - Carry logic is not wrapped when it does not fit in an area group during PAR


General Description:

Previously, when a carry chain was too long for an area group, the carry chain was broken up so that the design could be placed and routed. In the initial 5.1i software release, an error is issued and the design is not placed and routed.


This problem is fixed in the latest 5.1i Service Pack, available at:

The first service pack containing the fix is 5.1i Service Pack 1.
AR# 15902
Date Created 09/03/2007
Last Updated 12/08/2011
Status Archive
Type General Article