AR# 1442: XEPLD 6.x: Unexpected error detected, please report to Xilinx with reference "epldinst.cc40."
XEPLD 6.x: Unexpected error detected, please report to Xilinx with reference "epldinst.cc40."
When fitting a 7300 design with the 6.x XACTStep tools, the partioner/optimizer fails with:
Unexpected error detetected, please report to xilinx with reference "epldinst.cc:40", and no other error messages.
This is a bug in the EPLD tools that will not be fixed for 6.0.0/6.0.1. It is typically caused by an OBUF driving internal logic. The BUG is that the tools should itemize the DRC instead of simply issuing this cryptic code.
Search the design for such violations, and fix them in the design entry point.