Specifications

CHAPTER 3: CONSTRAINT ENTRY
ASSIGNING DESIGN PARTITIONS
62 ■ INTRODUCTION TO QUARTUS II ALTERA CORPORATION
Assigning Design Partitions
If you want to use the incremental compilation or incremental synthesis
features, you can designate separate hierarchical sections of your design as
design partitions on which you can perform Analysis & Synthesis or a full
compilation incrementally, without affecting the rest of the project. For more
information about incremental compilation and incremental synthesis, see
the following sections:
■ “Top-Down Incremental Compilation Flow” on page 30 in Chapter 1,
“Design Flow.”
■ “Performing Incremental Synthesis” on page 86 in Chapter 4,
“Synthesis.”
■ “Performing a Full Incremental Compilation” on page 92 in Chapter 5,
“Place & Route.”
You can assign partitions in your design for use with incremental synthesis
or full incremental compilation. Both the Project Navigator and the Design
Partitions window allow you to assign design partitions.
Assigning Design Partitions in the
Project Navigator
In the Hierarchy tab of the Project Navigator, you can specify a selected
instance of an entity as a design partition by using the Set as Design
Partition command (right button pop-up menu). When you specify the first
partition for the project, you are asked whether you want to use incremental
synthesis only or full incremental compilation, or whether you want to leave
this feature currently disabled.
If you want to make a LogicLock
™
assignment for a partition, you can drag
the partition from the Project Navigator window directly to the LogicLock
Regions window or to a LogicLock region in the Timing Closure floorplan.