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The original Verilog simulator, Gateway Design's Verilog-XL was the first (and only, for a time) Verilog simulator to be qualified for ASIC (validation) sign-off. After its acquisition by Cadence Design Systems, Verilog-XL changed very little over the years, retaining an interpreted language engine, and freezing language-support at Verilog-1995.
Unified linker / elaborator for Verilog, VHDL, and SystemC libraries. Generates a simulation object file referred to as a snapshot image. NC Sim ncsim Unified simulation engine for Verilog, VHDL, and SystemC. Loads snapshot images generated by NC Elaborator. This tool can be run in GUI mode or batch command-line mode.
Spectre is a SPICE-class circuit simulator owned and distributed by the software company Cadence Design Systems. It provides the basic SPICE analyses and component models. It also supports the Verilog-A modeling language. Spectre comes in enhanced versions that also support RF simulation and mixed-signal simulation (AMS Designer).
VHDL, Verilog (only pure digital simulations) [9] Qt GUI; uses own SPICE-incompatible simulator Qucsator for analog Qucs-S [1] various contributors: 2024 Fork of Qucs that supports SPICE-compatible simulator backends: Ngspice, Xyce, SpiceOpus, Qucsator InfineonSpice [10] Infineon Technologies: 2024 Windows, Wine: Analog SPICE Simulation SapWin
VHDL analyzer, compiler, and simulator. [12] Icarus Verilog *BSD, Linux, Mac: GPL-2.0-or-later: Verilog simulator Verilator: Posix: LGPL-3.0-only or Artistic-2.0: Verilator is the fastest free Verilog HDL simulator. It compiles synthesizable Verilog into cycle accurate C++ or SystemC code following 2-state
Verilog was later submitted to IEEE and became IEEE Standard 1364-1995, commonly referred to as Verilog-95. In the same time frame Cadence initiated the creation of Verilog-A to put standards support behind its analog simulator Spectre. Verilog-A was never intended to be a standalone language and is a subset of Verilog-AMS which encompassed ...
Cadence Design Systems later acquired Gateway Design Automation for the rights to Verilog-XL, the HDL simulator that would become the de facto standard of Verilog simulators for the next decade. The introduction of logic synthesis for HDLs pushed HDLs from the background into the foreground of digital design.
In 2019, Cadence introduced its Spectre X parallel circuit simulator, so that users could distribute time- and frequency-domain simulations across hundreds of CPUs for speed. [45] Cadence also developed AWR, a radio frequency to millimeter wave design environment for designing 5G/wireless products. AWR is used for communications, aerospace and ...