Specifications

CHAPTER 2: DESIGN ENTRY
CREATING A PROJECT
ALTERA CORPORATION INTRODUCTION TO QUARTUS II ■ 37
Using Revisions
You can use revisions to specify, save, and use different groups of settings
and assignments for the design files in a design. Revisions allow you to
compare results using different settings and assignments for the same
design files in a design.
When you create a revision, the Quartus II software creates a separate QSF,
which contains all the settings and assignments related to that revision, and
places it in the top-level directory for the design. You can create a revision
for any entity in a design. You can view the top-level entity for the any
revision in the Revisions dialog box or the current top-level design entity in
the General page of the Settings dialog box (Assignments menu).
The Revisions dialog box (Project menu) allows you to view all the revisions
for the current project, create a revision for a specific design entity, delete a
revision, or set a particular revision as the current revision for compilation,
simulation, or timing analysis. The information in the Revisions dialog box
shows the top-level design entity for a particular revision and the family and
device selected for the revision. A check mark icon indicates the current
revision. Using the Create Revision dialog box, you can create a new
revision (based on an existing revision), enter a description for the revision,
copy the database used to create the revision, and set a revision as the
current revision. You can also select which columns appear in the Revisions
dialog box. See Figure 3.