| CAUSE: | In a Component Configuration or Component Instantiation Statement at the specified location in a VHDL Design File (.vhd), you specified a component. However, you did not declare the component in a Component Declaration. You must declare a component before you can use it. |
| ACTION: | In the Component Configuration or Component Instantiation Statement, use a component that you already declared in a Component Declaration. Or, use a Component Declaration to declare the component that is in the Component Configuration or Component Instantiation Statement. However, do not define a component with the name you used in the Component Configuration or Component Instantiation Statement if you already used the name for a different construct. |
See also:
Sections 1.3.2, 4.5, and 9.6 of the IEEE Std 1076-1993 IEEE Standard VHDL Language Reference Manual
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