Quartus® Prime Standard Edition User Guide: Design Compilation

ID 683283
Date 10/22/2021
Document Table of Contents Importing LogicLock Assignments

LogicLock regions are set to a fixed size when imported. If you instantiate multiple instances of a subdesign in the top-level design, the imported LogicLock regions are set to a Floating location. Otherwise, they are set to a Fixed location. You can change the location of LogicLock regions after they are imported, or change them to a Floating location to allow the software to place each region but keep the relative locations of nodes within the region wherever possible. To preserve changes made to a partition after compilation, use the Post-Fit netlist type.

The LogicLock Member State assignment is set to Locked to signify that it is a preserved region.

LogicLock back-annotation and node location data is not imported because the .qxp contains all of the relevant placement information. Altera strongly recommends that you do not add to or delete members from an imported LogicLock region.