| CAUSE: | You tried to reserve the specified pin, but Compiler cannot reserve the specified pin during compilation because it is not assigned to a location. This message can occur when you manually edit the Compiler Settings File (.csf) to create assignments and do not specify a legal location assignment for a node you assigned to the pin. Altera recommends that you not directly edit the CSF. Instead, you should use either the Device page of the Settings dialog box or the Assignment Organizer command to make assignments. |
| ACTION: | Assign the reserved pin to a legal location. |
See also:
Assigning Pins
Assigning an Entity or Node to a Location
Overview: Making Assignments
Reserving a Pin with the Assignment Organizer
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