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AR# 12752

XST - "ERROR:Xst:624 - Could not find instance <inst_my_sub> of cell <my_sub> in <top>"


Keywords: 5.1i, 4.1i, incremental synthesis

Urgency: Standard

General Description:
When I use incremental synthesis in XST, the following error occurs:

"ERROR:Xst:624 - Could not find instance <inst_my_sub> of cell <my_sub> in <top>"


This error occurs either because your design was run in non-incremental synthesis mode and was then changed to run in incremental mode, or because the decomposition of your design changed.

To avoid this error, delete all versions of the NGC file that were previously generated by XST.

If the above suggestion still doesn't solve the problem please open a webcase with Xilinx Technical support at http://www.xilinx.com/support/clearexpress/websupport.htm
AR# 12752
Date Created 08/29/2007
Last Updated 10/21/2008
Status Archive
Type General Article