Mentor Graphics QuestaSim 2021.1 | 689.3 mb Mentor, a Siemens business, is pleased to announce the availability of QuestaSim 2021.1 comprehensive platform for verification complex designs. Questa is built on a core simulation and debug engine providing the industry's most complete native support of Verilog, SystemVerilog, VHDL, SystemC, PSL and UPF. Mentor Graphics QuestaSim 2020.1 | 677.3 mb Mentor, a Siemens business, is pleased to announce the availability of QuestaSim 2020.1 comprehensive platform for verification complex designs. Questa is built on a core simulation and debug engine providing the industry's most complete native support of Verilog, SystemVerilog, VHDL, SystemC, PSL and UPF. |