解决初学者疑惑：VHDL、Verilog，System+ve...

解决初学者疑惑：VHDL、Verilog，System+verilog比较Digital Simulation White Paper

Comparison of VHDL, Verilog and SystemVerilog

Stephen Bailey
Technical Marketing Engineer Model Technology

w w w. m o d e l . c o m

Introduction
As the number of enhancements to various Hardware Description Languages (HDLs) has increased over the past year, so too has the complexity of determining which language is best for a particular design. Many designers and organizations are contemplating whether they should switch from one HDL to another. This paper compares the technical characteristics of three, general-purpose HDLs:

explicitly convert from one data type to another (integer to bit-vector, for example). The creators of VHDL emphasized semantics that were unambiguous and designs that were easily portable from one tool to the next. Hence, race con