ModelSim is a multi-language environment by Siemens[1] (previously developed by Mentor Graphics,[2]) for simulation of hardware description languages such as VHDL, Verilog and SystemC, and includes a built-in C debugger.[3][2] ModelSim can be used independently, or in conjunction with Intel Quartus Prime, PSIM,[4] Xilinx ISE or Xilinx Vivado.[5] Simulation is performed using the graphical user interface (GUI), or automatically using scripts.[6]
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