AR# 6958

Synopsys Design/FPGA Compiler: Cannot find a valid implementation for module 'xdw_comp_uns'. (SYNH-14)

Description

Keywords: xdw_comp_uns, Design Compiler, FPGA Compiler, Virtex, designware, SYNH-14

Urgency: Standard

General Description:
When inferring a comparator when synthesizing with Synopsys' Design Compiler or FPGA Compiler and targetting a Virtex device, the following error may occur:

Error: Cannot find a valid implementation for module 'xdw_comp_uns'. (SYNH-14)

There is due to a problem with the Xilinx Designware component xdw_comp_uns for Virtex.
Design/FPGA Compiler will not be able to finish successfully whenever it infers that component.

Solution

At this time, there is no workaround. This will be patched in a future service pack for the 2.1i software release.

FPGA Compiler II / FPGA Express do not exhibit this problem.
AR# 6958
Date 04/25/2007
Status Archive
Type General Article