问答 #32519 - 11.1 MAP Known Issues - INFO:Map:91 is unnecessarily alarming

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11.1 MAP Known Issues - INFO:Map:91 is unnecessarily alarming

问答编号#	32519
型号	SW-MAP
最后更新日期	2009-04-23 00:00:00.0
记录状态	Active
关键词	INFO:Map:91, RLOC, hierarchy, RPM

疑问描述

Keywords: INFO:Map:91, RLOC, hierarchy, RPM

I am seeing the following message related to some RLOC constraints in my design. I am not too concerned about the RLOC constraints being ignored, but the message seems to be saying that the entire module is being ignored by MAP. Is this true?

INFO:Map:91 - fp_multiplier symbol
"apu_fpu_virtex5_0/apu_fpu_virtex5_0/gen_apu_fpu_dp_hi.netlist/fpu_multiplier
" has an RLOC attribute and will be ignored since it is on a hierarchical
block not directly recognized by map. This may be caused by an error in the
Xilinx library expansion for the symbol or by a third-party vendor
incorrectly expanding the symbol.

解决方案

The message is incorrect and will be corrected in ISE 11.2. The actual problem is that a hierarchy block was found to have an RLOC constraint, but no corresponding symbols with RLOC constraints were found within the hierarchy. For that reason, the RLOC constraint on the hierarchy is ignored. The logic within the hierarchy will otherwise be implemented normally.