Warning (21610): Output port "<port>" in instance "<inst>" of entity "<entity>" does not have a driver. Connecting to the default value "gnd".

Description

Due to a problem in the Quartus® Prime Pro Edition Software version 23.3, you might see this warning despite suppressing the message in your project.

The MESSAGE_DISABLE  assignment does not work for suppressing warning 21610.

Resolution

To work around this problem, use the following assignment to suppress this warning:

set_instance_assignment -name UNCONNECTED_OUTPUT_PORT_MESSAGE_LEVEL OFF -to “<inst|port>”

This problem is fixed beginning with the Quartus® Prime Pro Edition Software version 24.3