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AR# 13034

ModelSim (MXE, SE, PE) - "WARNING[1]: .vhd(#): No default binding for component: ''."

Description

When I compile a VHDL design that contains instantiated primitives, the following warning occurs:

"WARNING[1]: <design>.vhd(#): No default binding for component: "<primitive>". (No entity named "<primitive>" was found.)"

When I load the design, the following warning occurs:

"** Warning: Component <name> is not bound."

Solution

When you instantiate primitives in a VHDL file, you must also add the following library statement to the file:

library UNISIM;

use UNISIM.VCOMPONENTS.ALL;

This error can also occur if the ISE Simulation libraries are not compiled or mapped correctly.

This error can also occur if the instantiation does not match the component declaration of the primitive. In this case, the error message will include information on which pins are missing.

AR# 13034
Date Created 08/29/2007
Last Updated 12/15/2012
Status Active
Type General Article