Why do I get a DSPS-11 DRC error when trying to generate my bitstream with CARRYINSEL[2:0] set to 010 and OPMODEREG set to 0000000?
When OPMODE is 1001000 (MACC), it is necessary to set OPMODEREG to 1.
This is a valid DRC error. Please modify the OPMODEREG value accordingly.
If you see this error with a different OPMODE value, this is a known issue prior to Vivado 2015.2.
Please upgrade your design to the latest Vivado version.