AR# 11836


4.1i Virtex-II MAP - Crash occurs when PAD drives both BUFGMUX and DCM.


Keywords: MAP, crash, error, Dr. Watson, BUFGMUX, DCM

Urgency: Hot

General Description:
MAP crashes while trying to process a design that had a PAD driving both a BUFGMUX and DCM directly. The code attempted to automatically insert an IBUF, but incorrectly did so twice, once for each load.


This problem is fixed in the latest 4.1i Service Pack, available at:
The first service pack containing the fix is 4.1i Service Pack 1.

Meanwhile, MAP will run successfully if an IBUFG is inserted between the PAD and loads.
AR# 11836
Date 08/20/2003
Status Archive
Type General Article
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