Specifications

CHAPTER 2: DESIGN ENTRY

CREATING A PROJECT

ALTERA CORPORATION INTRODUCTION TO QUARTUS II ■ 41

Using Version-Compatible Databases

The Quartus II software allows you to export version-compatible database

files for use in a later version of the Quartus II software, eliminating the need

for a full compilation of the design in the later version of the Quartus II

software. You can export a database at any stage in the design flow, after

running Analysis & Synthesis or the quartus_map executable.

You can use this feature to create and optimize a design and then preserve

the database for Timing Analysis in a future version of the Quartus II

software to ensure that the design still meets the timing requirements with

updated timing models.

To export a database for use in a future version of the Quartus II software,

you can use the Export Database command (Project menu) to select the

directory to export the database. The Quartus II software exports the design

database. You can then use the Import Database command (Project menu)

in a future version of the Quartus II software to select the project folder,

import the design database, and perform timing analysis to verify the timing

requirements of the design.

You can also use the quartus_cdb command-line executable to export or

import design databases. Version-compatible databases are available in

version 4.1 or later versions of the Quartus II software.

Using the quartus_cdb executable

You can import or export version-compatible databases by using the quartus_cdb

executable.

To use the quartus_cdb executable to import or export a database, type one of the

following commands at a command prompt:

quartus_cdb <project> -c <revision> --import_database=<project directory>

quartus_cdb <project> -c <revision> --export_database=<project directory> r

If you want to get help on the quartus_cdb executable, type one of the following

commands at the command prompt:

quartus_cdb -h

quartus_cdb --help r

quartus_cdb --help=<topic name> r