Internal Error: Programmable pre-emphasis option is set to 1 for pin dut_mem_mem_par(0)~pad, but setting is not supported by I/O standard SSTL-12 with Slew Rate 0

Description

You may see an error similar to the one shown below when compiling the DDR4 IP in the Quartus® Prime Software versions 18.0 and 18.0.1.

 Internal Error: Programmable pre-emphasis option is set to 1 for pin <signal_name>~pad, but setting is not supported by I/O standard SSTL-12 with Slew Rate 0

The <signal_name> is one of the DDR4 address/command signals.

Resolution

In the Quartus® Prime project .QSF file, enter the following assignment:

set_instance_assignment -name PROGRAMMABLE_PREEMPHASIS 0 -to <signal_name>

Add a similar assignment for each affected DDR4 signal.