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1. Viewpoint: Formal verification with constraints – it doesn’t have to be like tightrope walking

rectifier function

1. Viewpoint: Formal verification with constraints – it doesn’t have to be like tightrope walking

At this point, you don't need to have the CLASSPATH variable set. We will cover that in a later section.

To test out your installation of the Java SDK you need to restart your computer. Do that and then create a simple test program to verify that all is well so far. A simple HelloWorld” program like the following should work just fine.

rectifier function

Listing 3-1:

public class HelloWorld {       // Simple program to make sure compiler is installed ok       public static void main( String args[] ) {             System.out.println( Hello, World!” );       } }

Open a DOS command window.

rectifier function

c:> notepad

Enter the Java program above into the text editor. Save the file and exit the editor. Then compile and run the program:

rectifier function

c:> javac c:> java HelloWorld

If there were no errors from either of the last two commands above, then you are all set to move on to installing the serial port API for Java. If you saw any errors when compiling or running the program, then you should carefully check the program you entered to see that you typed it correctly. Also check to see that you installed the Java Software Development Kit properly.

By making DM commands directly available in the EDA tool environment, the usability and correct use of DM methodology are enhanced. And since the EDA tool is aware of when a user wants to edit a design unit, it can work with the HCM tool to prompt the user to check out the design units when needed.

An HCM system must be seamlessly integrated with the design flow to enable users to work at the design abstractions they need to ensure accuracy of data management and to provide convenient access in the design tools.

The HCM system in use at Integrated Device Technology (IDT) is fully integrated within the Cadence custom design environment and is able to manage data seamlessly. Full integration within the environment and ease of use are keys to deployment and use, and these are achieved by having the functions and menus appear as a natural extension of the tool.

Designs are created hierarchically. Usually, the project is partitioned into modules, and a designer is assigned a module or submodule. Each module in turn comprises several levels of hierarchy.

A library, however, is a flat list of cells, often numbering in the thousands, in which the design hierarchy is not apparent. An individual designer is most interested in the module he or she is developing and in the hierarchy of cells below. For instance, a user looking to work on a module may need to check out not only the module for editing, but also the submodules that figure into the design hierarchy.


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