Verilog is a Hardware Description Language (HDL). It is a language used for describing a digital system such as a network switch, a microprocessor, a memory, or a flip-flop. We can describe any digital hardware by using HDL at any level. Designs described in HDL are independent of technology, very easy for designing and debugging, and are normally more useful than schematics, particularly for large circuits.
Verilog is basically a structural and behavior language and defines four abstraction levels to implement modules. With respect to the external environment, the module is viewed as identical irrespective of abstraction levels. But internal module implementation differs based on abstraction as described below.
Gate level – The module implementation is similar to the gate-level design description in terms of logic gates and interconnections between them.
Dataflow level – The module implementation depends on data flow specification i.e. how data flows and processes in the design circuit.
Switch level – The module implementation requires switch level knowledge to implement a design in terms of storage nodes, switches. This is the lowest level of abstraction.
Behavior level – The module implementation is similar to C language programming that includes algorithmic level implementation without worrying about hardware implementation details.
Here are some of the key features of the Verilog programming language:
Verilog is case sensitive.
In verilog, Keywords are defined in lower case.
In Verilog, Most of the syntax is adopted from "C" language.
Verilog can be used to model a digital circuit at Algorithm, RTL, Gate and Switch level.
There is no concept of the package in Verilog.
It also supports advanced simulation features like TEXTIO, PLI, and UDPs.
To choose a Region follow the below step:
1. Sign in to the AWS Management Console.
2. Choose a service to go to that service's console.
3. In the navigation bar, choose the name of the currently displayed Region. Then choose the Region to which you want to switch.
Step instructions for how to assess and monitor the health and proper function of the application:
1. Navigate to your Amazon EC2 console and verify that you're in the correct region.
2. Choose Instance and select your launched instance.
3. Select the server to display your metadata page and choose the Status checks tab at the bottom of the page to review if your status checks passed or failed.
To verify the installation, follow the below instructions
Step 1. Connect to SSH:
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
In the navigation pane, choose Instances.
Select the instance and choose Connect.
Choose SSH Client.
Copy the SSH command and paste it into the terminal.
ssh ubuntu@publicIP -i [Path of key pair file]
If it shows an access denied message run the following command, then run the above command again to connect via ssh.
chmod 400 [Path of key pair file]
Once launched in the Amazon EC2 Service, please connect to the instance via an SSH client using the ec2-user with the key pair associated at launch. Once connected as the ec2-user user, you will be able to sudo to the root user
Step 2. Verify the installation:
Follow the steps to verify the Verilog installation
1. Login with ssh
2. Type the below command to check the version
3. To check the version :
How to use Verilog in the terminal:
1. After connecting with ssh write the below command:
sudo nano helloworld.v
2. Paste the following code into the file:
3. After that use the below command :
iverilog -o helloworld helloworld.v
The output "Hello, World" should appear in your terminal. That's it! You have successfully printed "Hello, World" using Verilog in the terminal.
4. After using the above command then verify written the below command mentioned below image:
To monitor and assess application functions:-
a. Navigate to your Amazon EC2 console and verify that you're in the correct region.
b. Choose Instances and select your launched instance.
c. Select the server to display your metadata page and choose the Status checks tab at the bottom of the page to review if your status checks passed or failed.
For detailed information about managing and requesting increased service please visit: https://docs.aws.amazon.com/general/latest/gr/aws_service_limits.html