Quartus II Settings File Reference Manual - Altera

Chapter 4: Analysis & Synthesis Assignments 4–97
IMPLEMENT_AS_OUTPUT_OF_LOGIC_CELL
IMPLEMENT_AS_OUTPUT_OF_LOGIC_CELL
Type
Implements the output of a primitive in a logic cell. You can apply this option to a
logic function that would not ordinarily be implemented in a logic cell, typically a
combinatorial function such as an AND2 gate. Implementing the output of a primitive
a logic cell makes it possible to observe its output in simulation and timing analysis.
However, because an additional logic cell is used, overall device utilization will
increase. This option does not insert an additional logic cell on a function that is
already implemented in a logic cell, such as a flipflop. This option is ignored if it is
applied to anything other than a primitive.
This option can be assigned to an individual node only.
Boolean
Device Support
This setting can be used in projects targeting any Altera device family.
Syntax
set_instance_assignment -name IMPLEMENT_AS_OUTPUT_OF_LOGIC_CELL -to -
entity
Example
set_instance_assignment -name implement_as_output_of_logic_cell on -to foo
June 2012 Altera Corporation Quartus Settings File
Reference Manual