Answers Database
M1 Map - WARNING:x4kma:423: Signals drive closed FMAPs. Set XIL_MAP_OPEN_FMAPS
Record #6224
Problem Title:
M1 Map - WARNING:x4kma:423: Signals drive closed FMAPs. Set XIL_MAP_OPEN_FMAPS
Problem Description:
Urgency: Standard
General Description:
WARNING:x4kma:423 - The following signals, driven by buffers or
logic that reduced to a buffer, drive closed FMAPs. You may open
all closed FMAPs by setting the environment variable
XIL_MAP_OPEN_FMAPS.
Solution 1:
This warning is saying that there is some logic that has been reduced
to a buffer (nothing) that could be merged into a particular FMAP, but
the FMAP is closed. So there will be an extra level of logic that could
be avoided had the FMAP been open.
"Closed" indicates that the software cannot add or remove logic from
the function specified by the MAP symbol.
A workaround is to set the XIL_MAP_OPEN_FMAPS environment
variable, which will set all FMAPs to open.
Reference the libraries guide for more information regarding the
MAP attribute:
http://toolbox.xilinx.com/docsan/data/alliance/lib/lib12_5.htm#X12681
End of Record #6224 - Last Modified: 05/18/99 13:34 |
