Mentor Graphics ModelSim VHDL and Verilog support for specific languages and users can when programming standard ASIC and FPGA libraries in their programs. Mentor Graphics ModelSim software is Windows-based user interface that features a number of new programs to Jesse, simulation, planning, debug and analyze chip FPGA available to the users. This application is one of the most powerful design software and simulation programs VHDL and Verilog , which is used in industry. Language VHDL first time by the Ministry of Defense America to design and characterize high-speed integrated circuits were designed and used in 1987 by the IEEE in standard form available to the public. By ModelSim engineers and designers can test their applications before the hardware, by which simulates the performance of your application to ensure. In ModelSim all windows needed are available, windows such as Source to see the source code, Signals To view signals in the input / output chip, Process To view the processes running, Variables to view it the variables are used.

Features and characteristics of ModelSim:
- Multilingual

- Analysis of FPGA chips

- High performance simulation engine

- Programmer FPGA chips

- Simulation of FPGA chips

- Debugging a cloth

- Option to combine HDL simulator

- VHDL and Verilog design and simulation programs

- TCL