iverilog是verilog仿真综合工具，能够将verilog源代码编译为不同的目标文件-Icarus Verilog is a Verilog simulation and synthesis tool. It operates as a compiler, compiling source code writen in Verilog (IEEE-1364) into some target format

verilog-a 建模，在Cadence 中建立一个二级运放的VerilogA行为级模型，并进行建立时间等等仿真，以及对S/H电路的建模和仿真。 -verilog-a model in Cadence to create a secondary op amp VerilogA behavioral model and the simulation set-up time, etc., as well as S/H circuit modeling and simulation.