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AR# 4606

1.5i 4K MAP: ERROR:x4kma:387 - Unable to obey design constraints


Keywords: Map, floorplanner, mfp , fp, constraints,

Urgency: Standard

Description: ERROR:x4kma:387 - Unable to obey design constraints which require the combination of the following symbols into a single CLB: FMAP symbol "FMAP_149" (output signal=hdlc_tx_C168) There are more than two combinational outputs required. These symbols share the same LOC parameter.


This general error indicates that map was unable to follow
some CLB packing instructions. One possible cause for this
error is a known problem where map will pull FMAPs into
CLBs because they drive the HMAP, without checking for
conflicts. This behavior can be disabled by setting the
following environment variable:

setenv XIL_MAP_NO_FMAP_PACK 1 (Work Stations)

AR# 4606
Date Created 09/14/1998
Last Updated 03/27/2000
Status Archive
Type General Article