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AR# 23699

LogiCORE Multiplier v9.0 - Why does my non-Virtex-5 block RAM/ROM-based Constant Coefficient Multiplier (CCM) give incorrect output results in post-MAP simulation, post-PAR simulation, and hardware?

Description

Why does my non-Virtex-5 block RAM/ROM-based Constant Coefficient Multiplier (CCM) give incorrect output results in post-MAP simulation, post-PAR simulation, and hardware?

Solution

This problem is fixed in ISE 8.1 Service Pack 2. 

 

Until then, the way to work around this problem is to use the Distributed Memory or Embedded Multiplier option for the Constant Coefficient Multiplier (CCM).

AR# 23699
Date Created 09/04/2007
Last Updated 05/20/2014
Status Archive
Type General Article