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AR# 36200

12.1 ISIM - WARNING:HDLCompiler:746 - RAMB36E1.vhd Line 3202: Range is empty (null range)


When I compile a design for simulation using ISim, I see several warnings messages associated with the RAMB36E1 module:

Compiling architecture rb36_internal_vhdl_v of entity rb36_internal_vhdl [\RB36_INTERNAL_VHDL(36,0,0,false...]

WARNING:HDLCompiler:746 - "/vhdl/src/unisims/primitive/RAMB36E1.vhd" Line 3202: Range is empty (null range)

Can these warnings be ignored?


The warnings may be ignored. Future versions of the ISE Simulator will not report these warnings.

AR# 36200
Date Created 06/14/2010
Last Updated 07/27/2010
Status Active
Type General Article
  • ISE Design Suite - 12.1
  • ISE Design Suite - 12.2