Using VHDL in vivado I was able to create successful circular cordic. But when I made my AXI full and run it in SDK. TeamViewer/JoinME Like app for Mac, Windows, OSX. Change ethernet mac 105, program change ethernet mac 105, change ethernet mac. To be able to simulate, Vivado needs a Wrapper over the block diagram. This wrapper is a file that connect the output/input port of your block diagram to the physical pin described in the constraint file. Take the following VHDL program as an example. TWO is declared as a signal in Process_A and a constant 2 is assigned to it. In Process_B, it is multiplied by signal B and the result is stored in.
HDL simulators are software packages that compile and simulate expressions written in one of the hardware description languages.
History[edit]
HDL simulation software has come a long way since its early origin as a single proprietary product offered by one company. Today, simulators are available from many vendors at various prices, including free ones. For desktop/personal use, Aldec, Mentor, LogicSim, SynaptiCAD,TarangEDA and others offer tool-suites under US$5000 for the Windows 2000/XP platform. The suites bundle the simulator engine with a complete development environment: text editor, waveform viewer, and RTL-level browser. Additionally, limited-functionality editions of the Aldec and ModelSim simulator are downloadable free of charge, from their respective OEM partners (Microsemi, Altera, Lattice Semiconductor, Xilinx, etc.) For those desiring open-source software, there is Icarus Verilog, GHDL among others.
Beyond the desktop level, enterprise-level simulators offer faster simulation runtime, more robust support for mixed-language (VHDL and Verilog) simulation, and most importantly, are validated for timing-accurate (SDF-annotated) gate-level simulation. The last point is critical for the ASIC tapeout process, when a design database is released to manufacturing. (semiconductor foundries stipulate the usage of tools chosen from an approved list, in order for the customer's design to receive signoff status. Although the customer is not required to perform any signoff checking, the tremendous cost of a wafer order has generally ensured thorough design validation on the part of the customer.) The three major signoff-grade simulators include Cadence Incisive Enterprise Simulator, Mentor ModelSim/SE, and Synopsys VCS. Pricing is not openly published, but all three vendors charge $25,000-$100,000 USD per seat, 1-year time-based license.
FPGA vendors do not require expensive enterprise simulators for their design flow. In fact, most vendors include an OEM version of a third-party HDL simulator in their design suite. The bundled simulator is taken from an entry-level or low-capacity edition, and bundled with the FPGA vendor's device libraries. For designs targeting high-capacity FPGA, a standalone simulator is recommended, as the OEM-version may lack the capacity or speed to effectively handle large designs.
Below is a list of various HDL simulators.
Commercial simulators[edit]
| Simulator name | Author/company | Languages | Description |
|---|---|---|---|
| Active-HDL/Riviera-PRO | Aldec | VHDL-1987,-1993,-2002,-2008,V1995,V2001,V2005,SV2009 | A simulator with complete design environment aimed at FPGA-applications. Aldec licenses Active-HDL to FPGA-vendors, and the underlying engine can be found in the design-suites of those vendors. While ActiveHDL is a low-cost product, Aldec also offers a more expensive, higher-performance simulator called 'Riviera-PRO'. With advanced debugging capabilities, it is aimed at the verification of large FPGA and ASIC devices using formal verification methodologies such as assertion based verification. |
| Aeolus-DS | Huada Empyrean Software Co.,Ltd | V2001 | Aeolus-DS is a part of Aeolus simulator which is designed to simulate mixed signal circuit. Aeolus-DS supports pure Verilog simulation. |
| CVC | Tachyon Design Automation | V2001, V2005 | CVC is a Verilog HDL compiled simulator. CVC has the ability to simulate in either interpreted or compiled mode. |
| HiLo | Teradyne | Used in 1980s. | |
| Incisive Enterprise Simulator ('big 3') | Cadence Design Systems | VHDL-1987,-1993,-2002,-2008, V2001, SV2005, SV2009, SV2012 | Cadence initially acquired Gateway Design, thereby acquiring Verilog-XL. In response to competition from faster simulators, Cadence developed its own compiled-language simulator, NC-Verilog. The modern version of the NCsim family, called Incisive Enterprise Simulator, includes Verilog, VHDL, and SystemVerilog support. It also provides support for the e verification language, and a fast SystemC simulation kernel. |
| ISE Simulator | Xilinx | VHDL-93, V2001 | Xilinx's simulator comes bundled with the ISE Design Suite. ISE Simulator (ISim) provides support for mixed-mode language simulation including, but not limited to, simulation of designs targeted for Xilinx's FPGAs and CPLDs. |
| Metrics Cloud Simulator | Metrics Technologies | SV2012 | SystemVerilog simulator used on the Metrics cloud platform. Includes all the standard features of a modern SystemVerilog simulator including debug, APIs, language and testbench support. |
| ModelSim and Questa ('big 3') | Mentor Graphics | VHDL-1987,-1993,-2002,-2008, V2001, SV2005, SV2009, SV2012 | The original Modeltech (VHDL) simulator was the first mixed-language simulator capable of simulating VHDL and Verilog design entities together. In 2003, ModelSim 5.8 was the first simulator to begin supporting features of the Accellera SystemVerilog 3.0 standard.[1] In 2005 Mentor introduced Questa to provide high performance Verilog and SystemVerilog simulation and expand Verification capabilities to more advanced methodologies such as Assertion Based Verification and Functional Coverage. Today Questa is the leading high performance SystemVerilog and Mixed simulator supporting a full suite of methodologies including industry standard OVM and UVM. ModelSim is still the leading simulator for FPGA design. |
| MPSim | Axiom Design Automation | V2001, V2005, SV2005, SV2009 | MPsim is a fast compiled simulator with full support for Verilog, SystemVerilog and SystemC. It includes Designer, integrated Verilog and SystemVerilog debugging environment and has built-in support for multi-cpu simulation. |
| PureSpeed | Frontline | V1995 | The first Verilog simulator available on the Windows OS. The simulator had a cycle-based counterpart called 'CycleDrive'. FrontLine was sold to Avant! in 1998, which was later acquired by Synopsys in 2002. Synopsys discontinued Purespeed in favor of its well-established VCS simulator. |
| Quartus II Simulator (Qsim) | Altera | VHDL-1993, V2001, SV2005 | Altera's simulator bundled with the Quartus II design software in release 11.1 and later. Supports Verilog, VHDL and AHDL. |
| SILOS | Silvaco | IEEE-1364-2001 | As one of the low-cost interpreted Verilog simulators, Silos III, from SimuCad, enjoyed great popularity in the 1990s. With Silvaco's acquisition of SimuCad, Silos is part of the Silvaco EDA tool suite. |
| SIMILI VHDL | Symphony EDA | VHDL-1993 | Another low-cost VHDL simulator with graphical user interface and integrated waveform viewer. Their web site was not updated for quite some time now. You can no longer purchase the software. The free version does work but you have to request a license via email. |
| SMASH | Dolphin Integration | V1995, V2001, VHDL-1993 | SMASH is a mixed-signal, multi-language simulator for IC or PCB designs. It uses SPICE syntax for analog descriptions, Verilog-HDL and VHDL for digital, Verilog-A/AMS, VHDL-AMS and ABCD (a combination of SPICE and C) for analog behavioral, and C for DSP algorithms. |
| Speedsim | Cadence Design Systems | V1995 | Cycle based simulator originally developed at DEC. The DEC developers spun off to form Quickturn Design Systems. Quickturn was later acquired by Cadence, who discontinued the product in 2005. Speedsim featured an innovative slotted bit-slice architecture that supported simulation of up to 32 tests in parallel. |
| Super-FinSim | Fintronic | V2001 | This simulator is available on multi-platform, claiming IEEE 1364-2001 compliance. |
| TEGAS/Texsim | TEGAS/CALMA/GE | TDL (Tegas Design Language) | First described in 1972 paper, used in 1980s by ASIC vendors such as LSI Logic, GE. |
| VCS ('big 3') | Synopsys | VHDL-1987,-1993,-2002,-2008, V2001, SV2005, SV2009, SV2012 | Originally developed by John Sanguinetti, Peter Eichenberger and Michael McNamara under the startup company Chronologic Simulation, which was acquired by ViewLogic Systems in 1994. ViewLogic was subsequently acquired by Synopsys in 1997. VCS has been in continuous active development, and pioneered compiled-code simulation, native testbench and SystemVerilog support, and unified compiler technologies. Today, VCS provides comprehensive support for all functional verification methodologies and languages (including VHDL, Verilog, SystemVerilog, Verilog AMS, SystemC, and C/C++), and advanced simulation technologies including native low power, x-propagation, unreachability analysis, and fine-grained parallelism. |
| Verilogger Extreme, Verilogger Pro | SynaptiCAD | V2001,V1995 | Verilogger Pro is a low-cost interpreted simulator based on Elliot Mednick's VeriWell code base. Verilogger Extreme is a newer, compiled-code simulator that is Verilog-2001 compliant and much faster than Pro. |
| Verilog-XL | Cadence Design Systems | V1995 | 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. Cadence recommends Incisive Enterprise Simulator for new design projects, as XL no longer receives active development. Nevertheless, XL continues to find use in companies with large codebases of legacy Verilog. Many early Verilog codebases will only simulate properly in Verilog-XL, due to variation in language implementation of other simulators. |
| Veritak | Sugawara Systems | V2001 | It is low-cost and Windows-based only. It boasts a built-in waveform viewer and fast execution. |
| Vivado Simulator | Xilinx | VHDL-93, V2001 | Xilinx's Vivado Simulator comes as part of the Vivado design suite. It is a compiled-language simulator that supports mixed language, TCL scripts, encrypted IP and enhanced verification. Vivado is targeted at Xilinx's larger FPGAs, and is slowly replacing ISE as their mainline tool chain. As of mid 2014, Vivado covered Xilinx's mid scale and large FPGAs, and ISE covered the mid scale and smaller FPGAs and all CPLDs. |
| Z01X | WinterLogic (acquired by Synopsys 2016) | V2001,SV2005 | Developed as a fault simulator but can also be used as a logic simulator. |
Some non-free commercial simulators (such as ModelSim) are available in student, or evaluation/demo editions. These editions generally have many features disabled, arbitrary limits on simulation design size, but are offered free of charge.
Free and open-source simulators[edit]
| Simulator name | License | Author/company | Supported languages | Description |
|---|---|---|---|---|
| GPL Cver | GPL | Pragmatic C Software | V1995, minimal V2001 | This is a GPL open-source simulator. It is a pure simulator. This simulator is not fully IEEE 1364-2001 compliant. It does not support generate and constant functions. |
| Icarus Verilog | GPL2+ | Stephen Williams | V1995, V2001, V2005, limited SV2005/SV2009 | Also known as iverilog. Good support for Verilog 2005, including generate statements and constant functions. |
| LIFTING | A. Bosio, G. Di Natale (LIRMM) | V1995 | LIFTING (LIRMM Fault Simulator) is an open-source simulator able to perform both logic and fault simulation for single/multiple stuck-at faults and single event upset (SEU) on digital circuits described in Verilog. | |
| OSS CVC | Perl style artistic license | Tachyon Design Automation | V2001, V2005 | CVC is a Verilog HDL compiled simulator. CVC has the ability to simulate in either interpreted or compiled mode. Source code is available under a Perl style artistic license. |
| TkGate | GPL2+ | Jeffery P. Hansen | V1995 | Event driven digital circuit editor and simulator with tcl/tk GUI based on Verilog. Includes Verilog simulator Verga. |
| Verilator | GPL3 | Veripool | Synthesizable V1995, V2001, V2005, SV2005, SV2009, SV2012, SV2017 | This is a very high speed open-source simulator that compiles synthesizable Verilog to multithreaded C++/SystemC. |
| Verilog Behavioral Simulator (VBS) | GPL | Lay H. Tho and Jimen Ching | V1995 | Supports functions, tasks and module instantiation. Still lacks a lot of features, but this release has enough for a VLSI student to use and learn Verilog. Supports only behavioral constructs of Verilog and minimal simulation constructs such as 'initial' statements. |
| VeriWell | GPL2 | Elliot Mednick | V1995 | This simulator used to be commercial, but has recently become GPL open-source. Compliance with 1364 is not well documented. It is not fully compliant with IEEE 1364-1995. |
| ISOTEL Mixed Signal & Domain | GPL | ngspice and Yosys communities, and Isotel | V2005 | Open-source mixed signal ngspice simulator in combination with verilog synthesis software called Yosys and Isotel extension for embedded C/C++ (or other) co-simulation. |
| Simulator name | License | Author/company | Supported languages | Description |
|---|---|---|---|---|
| GHDL | GPL2+ | Tristan Gingold | VHDL-1987, VHDL-1993, VHDL-2002, partial VHDL-2008 | GHDL is a complete VHDL simulator, using the GCC technology. |
| Icarus Verilog | GPL2+ | Maciej Sumiński Stephen Williams | VHDL preprocessor added that converts VHDL to Verilog | |
| nvc | GPL3 | Nick Gasson | VHDL-1993 |
Key[edit]
| Tag | Description |
|---|---|
| V1995 | IEEE 1364-1995 Verilog |
| V2001 | IEEE 1364-2001 Verilog |
| V2005 | IEEE 1364-2005 Verilog |
| SV2005 | IEEE 1800-2005 SystemVerilog |
| SV2009 | IEEE 1800-2009 SystemVerilog |
| SV2012 | IEEE 1800-2012 SystemVerilog |
| SV2017 | IEEE 1800-2017 SystemVerilog |
| VHDL-1987 | IEEE 1076-1987 VHDL |
| VHDL-1993 | IEEE 1076-1993 VHDL |
| VHDL-2002 | IEEE 1076-2002 VHDL |
| VHDL-2008 | IEEE 1076-2008 VHDL |
See also[edit]
References[edit]
- ^http://www.sutherland-hdl.com/papers/2004-Mentor-U2U-presentation_SystemVerilog_and_ModelSim.pdf
i just wrote a simple VHDL program. I saved the file as a .vhd file. Then I compiled it with
and then built and executable file with
And finally tried to run it with
What happened is that I now have a work-obj93.cf file that is visible and two other files, namely .. and . that are somehow invisible.
Can someone tell how exactly I can test a vhdl program on my Mac? Maybe in in combination with GTKWave.
Ciro Santilli 新疆改造中心996ICU六四事件4 Answers
That as they say is a big ask!
There's a version of ghdl for OS X running on Intel processors for versions 10.5, 10.6,10.7 and 10.8 available from ghdl.free.fr (can be downloaded at GHDL for Mac OS X). It's the mcode version (like on Windows), which means it doesn't produce object codes or a standalone executable of a VHDL model with the consequence you can't bind foreign objects (subprograms) to the model.
The elaborated model only exists in memory at run time and the -e elaborate command is superfluous other than an entry in the working library .cf file. In an mcode version of ghdl the -r run command also elaborates. All you are going to see is the work-obj93.cf file for the working directory and any .cf files for pre-analyzed libraries, by default these will show up in /usr/local/ghdl/libraries, the executable ghdl found in /usr/local/bin links to /usr/local/ghdl/translate/ghdldrv/ghdl_mcode, and /usr/local/ghdl is a stripped down tree resulting from the compilation of the ghdl_mcode version.
This version is derived from svn129 (following the ghdl-0.29 release), and contains an i386 binary.
The documentation for ghdl is found in /usr/local/ghdl/doc/, there's the ghdl man page which is linked elsewhere, ghdl.html and ghdl.texi which are the ghdl manual and not linked elsewhere. In ghdl.html you could search for every occurrence of 'Windows' to find reference to the mcode version. As an oversight I didn't think to amend the ghdl manual to include the word mcode wherever Windows appeared and release modified manual.
Where ever 'Windows' appears it should be read as 'Windows or other mcode version'.
In the ghdl manual see 1.3 What is GHDL?, (The Windows(TM) version of GHDL is not based on GCC but on an internal code generator). Also 2.1 The hello world program:
To illustrate the large purpose of VHDL, here is a commented VHDL 'Hello world' program.
Suppose this program is contained in the file hello.vhdl. First, you have to compile the file; this is called analysis of a design file in VHDL terms.
This command creates or updates a file work-obj93.cf, which describes the library ‘work’. On GNU/Linux, this command generates a file hello.o, which is the object file corresponding to your VHDL program. The object file is not created on Windows.
Then, you have to build an executable file.
The ‘-e’ option means elaborate. With this option, GHDL creates code in order to elaborate a design, with the ‘hello’ entity at the top of the hierarchy.
On GNU/Linux, the result is an executable program called hello which can be run:
or directly:
On Windows, no file is created. The simulation is launched using this command:
The result of the simulation appears on the screen:
Saving the source code for the hello_world command to the file hello.vhdl and executing the commands:
david_koontz@Macbook: ghdl -a hello.vhdl
david_koontz@Macbook: ghdl -e hello_world
david_koontz@Macbook: ghdl -r hello_world
Yields:
Hello world!
on standard output (the TTY session in your terminal window).
You'll end up with a work-obj93.cf library configuration file in the current working directory and no other output files. You'll also want to understand the implications of the -r run command (section 3.1.3), with no optional secondary unit passed on the command line VHDL defaults to the last compiled architecture.
Obtaining Tony Bybell's gtkwave gtkwave.app, the documentation is found in /Applications/gtkwave.app/Contents/Resources/doc, both a source .odt file and a PDF file. (You can select an application in the Applications folder and 'Show Package Contents' to navigate to the doc directory).
There's a waveform format unique to ghdl called ghw, which can be invoked with the run command option '--wave=.ghw'. See ghdl manual 4.1 Simulation options. Also see the vcd options in that directory should you choose to use VCD instead.
You should also limit the run time duration with a guard timer should your test bench provide a free running clock. VHDL will only stop executing when either ther are no more scheduled signal updates or execution time maxes out. This is a run command option along the lines of '--stop-time=587200ns'.
The OS X gtkwave.app is sensitive to two file types with extensions .ghw and .gtkw, the first the ghdl waveform dump file, the second gtkwave's configuration file with an OS X suffix allowing invocation of gtkwave by clicking on the gtkw file. The configuration file has to be saved after setting up your wave form display in gtkwave before it exists. See the gtkwave manual. A ghw file can be clicked on and gtkwave has a set of rules used to search for the applicable gtkw file.
There are a couple of advantages to using the ghw file format. The automatic invocation of the gtkwave app by clicking on files is one. Another is that ghdl saves all signal transactions to it's ghw dump file. You can always select more in gtkwave to display more information. While this can be a disadvantage in large models the ghw format allows any type or subtype enumeration literal display.
Joining the GHDL discuss list and posting a question is a good way to attract ghdl expertise attention. (And yes the certificate for gna.org is expired or otherwise invalid). Tony Bybell provides an email contact on the gtkwave web page but exigencies of paid employment limit his availability.
Elaborating the use of ghdl and gtkwave with an example.
The original poster asked for some real examples with command line values. There's a however poor GHDL/GTKWave Tutorial (PDF, 234 KB) that contains an example and used VCD.
I'll list the command lines for a GHDL Waveform format version:
david_koontz@Macbook: ghdl -a CarryRipple.vhd
david_koontz@Macbook: ghdl -a CarryRipple_tb.vhd
Vhdl Program Like Vivado For Mac Os
david_koontz@Macbook: ghdl -e carryRipple_tb
david_koontz@Macbook: ghdl -r carryRipple_tb --wave=carryRipple_tb.ghw
invoking gtkwave.app can either be done by clicking on the resulting carryRipple_tb.ghw or by using OS X's open command:
david_koontz@Macbook: open -a gtkwave carryRipple_tb.ghw
Gtkwave's SST window (upper left) will display top, expand by clicking the + box. Do the same for the revealed carryripple_tb. Click a. In the signals window select a[3:0] and hit the insert button. Repeat for b.
In the SST window select U0 and then in the signals window select cin hit the insert button then the same for cout.
In the SST window select s, and in the signals window select s[3:0] and hit insert.
And yes getting the source for the two VHDL files from the 'tutorial' was painful. I didn't do it.
You might also note the assignment of 'X' to Cin at 60 ns in the gtkwave display, I did it to show the last values assigned in the testbench.
I wouldn't claim it's a good tutorial, but you're getting what you paid for here. Doing better would have been a bigger ask.
The test bench (carryRipple_tb.vhd) provides stimulous to drive the model (CarryRipple.vhd) during simulation. The model quits executing after the last signal event so no stop time need be passed to the run command ( e.g. --stop-time=587200ns).
There's also a five part GHDL/GTKWave Tutorial on Youtube by Chad Kersey. The resolution isn't so good and it's Linux centric. Part 0 is about installing the two tools. The only real difference in my example is using the ghw waveform format. Most browsers will allow you to see the gtkwave window shot below at full size.
added
There's a recent answer showing a demonstration with a Toggle Flip Flop, showing an error in the original VHDL code, and three possible fixes. It uses configuration declarations to run the various fixed versions. See how to avoid delay in the output of simple process statement in VHDL.
Vivado For Mac
A New Mac OS X gcc version of GHDL
There's a new version of ghdl available from ghdl-updates / Builds / ghdl-0.31 / OSX, a gcc version that includes the mcode verison.
It's only known to run on OS X 10.9 but I think it would run OS X 10.8 if Xcode and it's command line tools were installed - the gcc version currently depends on /usr/bin/as and /usr/bin/ld, which are part of the essentials package installing OS X 10.9 and available by installing Xcode command line tools on OS X 10.8.
Once this version of ghdl is installed, in a terminal you can
Scroll down to Starting with GHDL, hitting carriage return. Scroll down to The hello world program (carriage return), A full adder (carriage return), or Starting with a design (carriage return). The first one is a VHDL hello world program, the second one is a one bit adder with a test bench. The Starting with a design leads you to a download link and directions for a DLX processor simulation.
I'm planning to develop a 10.6 - 10.9 gcc version of ghdl that doesn't depend on Xcode for 10.6 - 10.8, and runs on 10.9. It'll likely be version 0.32 of ghdl.
Xilinx Vivado Mac
Tony Bybell's gtkwave.app runs on OS X 10.6 - 10.9 and is available along with it's manual from the GTKWave SourceForge page. The latest version of the application can be downloaded from this link on Sourceforge - gtkwave.zip.
There are several ghdl/gtkwave tutorials available on YouTube, although none are OS X specific, try googling.
ghdl has it's own gtkwave format, GHW which is VHDL friendly and allows you to peer into complex composite types. ghdl-0.33 will likely include support for Tony Bybell's FSB format as well.
The more adventuresome can build ghdl from scratch on OS X, see Instructions for building ghdl-0.31 with gcc4.8.2 on OS X 10.9. Building with gcc4.9.1 would require the ghdl-0.32 release available from the Mercurial archive found here. When released version ghdl-0.32 binaries will also be available from Sourceforge.
The Sourceforge site ghdl-updates is the location for on going ghdl development activity by the author of ghdl, Tristan Gingold.
In addition to joining the ghdl discussion list or perusing it's archives you can file bug reports on the ghdl-updates Tickets page, where you view both open and closed issues.
The development future for ghdl is bright. Future releases are expected to focus on IEEE Std 1076-2008 compliance for the near future. There's also development toward using ghdl as an llvm front end as well as a purely interpretive version to supplant ghdl-mcode.
It's possible with binary releases of ghdl and gtkwave to separate user from developer.
user1155120user1155120I don't know if this is exactly relevant to this discussion. However, I am excited that I managed to install GHDL on my Mac, El Capitan today. I downloaded the latest GHDL version from ghdl.free.fr for mac and everything installed okay. I did get a message saying that the object files were a newer format or something along those lines. Still, my vhdl code compiled.
I did have an issue trying to compile a test bench for said vhdl code. When I compiled them separately I got error messages. When I compiled them together, that is
Xilinx Vivado 2018.2
everything worked as you would expect it to.
worked and so did
So maybe there was an issue with how the vhdl was compiled. In my case, unlike in Ubuntu, I had to analyze code.vhdl and code_tb.vhdl together. Perhaps this may be useful to future readers.
Install Xilinx Vivado
I use UMHDL on my MacOS High Sierra and it works like a charm.
Was tricky to bind GHDL and GTKWave to UMHDL although but i got it.