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ModelSim
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<p>ModelSim is a multi-language environment by <a href="/facts/Siemens/coa80TQn">Siemens</a> (previously developed by <a href="/facts/Mentor_Graphics/EAs59CSJ">Mentor Graphics</a>,) for simulation of <a href="/facts/Hardware_description_language/g19KvKCu">hardware description languages</a> such as <a href="/facts/VHDL/H6Exdjfs">VHDL</a>, <a href="/facts/Verilog/efVqbKXg">Verilog</a> and <a href="/facts/SystemC/SEqgs3ka">SystemC</a>, and includes a built-in C debugger. ModelSim can be used independently, or in conjunction with <a href="/facts/Altera_Quartus/28K9Nq7M">Intel Quartus Prime</a>, <a href="/facts/PSIM_Software/Vnwgaeku">PSIM</a>, <a href="/facts/Xilinx_ISE/nSxjgE83">Xilinx ISE</a> or <a href="/facts/Xilinx_Vivado/2LzP1HBd">Xilinx Vivado</a>. Simulation is performed using the <a href="/facts/Graphical_user_interface/wBlQFWDP">graphical user interface</a> (GUI), or automatically using scripts. </p>