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Modelsim 6.2 Free Download


How to Download and Install ModelSim 6.2 for Free




ModelSim is a popular HDL simulator that supports VHDL, Verilog, and SystemVerilog languages. It is widely used by FPGA designers and verification engineers to test and debug their designs. ModelSim has many features such as code coverage, mixed HDL simulation, and intuitive debug environment.


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ModelSim is a commercial product developed by Siemens EDA (formerly Mentor Graphics). The latest version of ModelSim is Questa, which has some additional features and enhancements. However, ModelSim 6.2 is still a powerful and reliable simulator that can meet the needs of most FPGA projects.


In this article, we will show you how to download and install ModelSim 6.2 for free on Windows or Linux platforms. We will also provide some tips and tricks to make the most of ModelSim 6.2.


Downloading ModelSim 6.2




There are several ways to get ModelSim 6.2 for free, depending on your platform and FPGA vendor. Here are some of the options:



  • If you are using Intel FPGAs, you can download Questa-Intel FPGA Starter Edition (ModelSim) from Intel's FPGA Software Download Center. This is a free version of Questa that works with Intel Quartus Prime Lite Edition Design Software. You can select the QuestaSetup Windows or Linux version from the Individual Files tab on the download page. This version of Questa is compatible with ModelSim 6.2 and has the same look and feel.



  • If you are using Xilinx FPGAs, you can download ModelSim PE Student Edition from Xilinx Support. This is a free version of ModelSim that works with Xilinx ISE Design Suite. You need to register for an account and request a license file from Xilinx to use this version. This version of ModelSim is also compatible with ModelSim 6.2 and has the same look and feel.



  • If you are using other FPGAs or just want to use ModelSim as a standalone simulator, you can download ModelSim PE Evaluation Version from Siemens EDA. This is a free trial version of ModelSim that works for 21 days. You need to fill out a form and request a license file from Siemens EDA to use this version. This version of ModelSim is also compatible with ModelSim 6.2 and has the same look and feel.




Installing ModelSim 6.2




After downloading the appropriate version of ModelSim for your platform and FPGA vendor, you can follow these steps to install it:



  • Run the installer executable or script that you downloaded and follow the instructions on the screen.



  • Select the ModelSim-Intel FPGA Starter Edition, ModelSim PE Student Edition, or ModelSim PE Evaluation Version option when prompted, depending on which version you downloaded.



  • Specify the installation directory and license file location when prompted.



  • Wait for the installation to complete and click Finish.




You have successfully installed ModelSim 6.2 on your computer. You can launch it from the Start menu on Windows or from the terminal on Linux by typing "vsim".


Using ModelSim 6.2




ModelSim 6.2 has a graphical user interface (GUI) that allows you to create projects, edit files, compile sources, run simulations, and view waveforms. You can also use commands in the Transcript window to perform various tasks.


To create a new project in ModelSim 6.2, follow these steps:



  • Select File > New > Project from the menu bar.



  • Specify the project name and location in the New Project dialog box.



  • Add source files to the project by clicking Add Existing File or Add New File buttons.



  • Select the target library and language for each source file in the Project tab.



  • Click OK to create the project.




To edit a source file in ModelSim 6.2, follow these steps:



  • Select File > Open from the menu bar or double-click a file in the Project tab.



  • Make changes to the file in the Editor window.



  • Select File > Save or press Ctrl+S to save the file.




To compile a source file in ModelSim 6.2, follow these steps:



  • Select Compile > Compile from the menu bar or right-click a file in the Project tab and select Compile.



  • Wait for the compilation to finish and check the messages in the Transcript window.




To run a simulation in ModelSim 6.2, follow these steps:



  • Select Simulate > Start Simulation from the menu bar or press Ctrl+R.



  • Select the top-level module or entity from the Design tab in the Start Simulation dialog box.



  • Click OK to start the simulation.



  • Use the buttons in the Simulation toolbar to control the simulation, such as Run, Stop, Restart, Step, etc.



  • Use the commands in the Transcript window to interact with the simulation, such as force, watch, probe, etc.




To view waveforms in ModelSim 6.2, follow these steps:



  • Select View > Wave from the menu bar or press Ctrl+W to open the Wave window.



  • Drag and drop signals from the Objects tab or the Structure tab to the Wave window.



  • Use the buttons in the Wave toolbar to zoom, pan, measure, etc.



  • Use the commands in the Transcript window to manipulate waveforms, such as add wave, delete wave, radix, etc.




Tips and Tricks for ModelSim 6.2




Here are some tips and tricks that can help you use ModelSim 6.2 more effectively:



  • You can use scripts to automate common tasks in ModelSim 6.2, such as compiling sources, running simulations, and generating reports. You can write scripts in Tcl or do files and execute them from the Transcript window or from the command line.



  • You can use code coverage to measure how well your testbench exercises your design. You can enable code coverage by selecting Compile > Compile Options from the menu bar and checking the Code Coverage options. You can view code coverage results by selecting Tools > Code Coverage Viewer from the menu bar.



  • You can use mixed HDL simulation to simulate designs that contain VHDL and Verilog modules. You can compile VHDL and Verilog sources into separate libraries and then link them together during simulation. You can also use SystemVerilog to interface between VHDL and Verilog modules.




Conclusion




ModelSim 6.2 is a powerful and reliable HDL simulator that can help you verify and debug your FPGA designs. You can download and install ModelSim 6.2 for free on Windows or Linux platforms by following this article. You can also use ModelSim 6.2 to create projects, edit files, compile sources, run simulations, and view waveforms. You can also use scripts, code coverage, and mixed HDL simulation to enhance your verification productivity and quality.


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