Specifications

CHAPTER 13: ENGINEERING CHANGE MANAGEMENT
INTRODUCTION
214 ■ INTRODUCTION TO QUARTUS II ALTERA CORPORATION
Introduction
The Quartus
®
II software allows you to make small modifications, often
referred to as engineering change orders (ECO), to a design after a full
compilation. These ECO changes can be made directly to the design
database, rather than to the source code or the Quartus II Settings and
Configuration File (.qsf). Making the ECO change to the design database
allows you to avoid running a full compilation in order to implement the
change. Figure 1 shows the engineering change management design flow.
Figure 1. Engineering Change Management Design Flow
The following steps outline the design flow for engineering change
management in the Quartus II software.
1. After a full compilation, use the Chip Editor to view design placement
and routing details and identify which resources you want to change.
2. Create, move, and/or remove atoms in the Chip Editor.
3. Use the Resource Property Editor to edit internal properties of
resources and to edit or remove connections.
4. Repeat steps 2 and 3 until you have finished making all changes.
5. Use the Check Resource Properties command (Edit menu) to check the
legality of the change for the resource.
6. View the summary and status of your changes in the Change Manager
and control which changes to resource properties are implemented
and/or saved. You can also add comments to help you reference each
change.
Quartus II
Chip Editor
Compiler
Database
Files (.cdb)
From Quartus II
Compiler (full
compilation)
Resource
Property Editor
Change
Manager
to Assembler, EDA
Netlist Writer, or
Timing Analyzer