How do I make a parameter assignment in the Quartus II Assignment Editor version 10.0 and later?

Due to a problem in the Quartus® II software version 10.0 and 10.1, the option to make a parameter assignment in the Assignment Editor is missing.

To work around this problem, make the parameter assignment with a Tcl command by entering it in the Quartus II Tcl Console window or by including it in the Quartus II Settings File (.qsf). The syntax for a parameter assignment Tcl command is as follows:

set_parameter -name <parameter name> <value> -to "<node name>"

For example, to assign a value of DONT_CARE to the READ_DURING_WRITE_MODE_MIXED_PORTS parameter of the memory instance "meminstA", use the following Tcl command in the Tcl console window or in the .qsf:

set_parameter -name READ_DURING_WRITE_MODE_MIXED_PORTS DONT_CARE -to "meminstA"

Assignment Editor support for parameter assignments is fixed beginning with the Quartus II software version 11.0.