Open Source VHDL/Verilog Software

This directory contains the sources of GHDL, the open-source analyzer, compiler, simulator and (experimental) synthesizer for VHDL, a Hardware Description Language (HDL). GHDL is not an interpreter: it allows you to analyze and elaborate sources for generating machine code from your design. Native program execution is the only way for high-speed simulation. Full support for the 1987, 1993, 2002 versions of the IEEE 1076 VHDL standard, and partial for the 2008 and 2019 revisions. By using a code generator (LLVM, GCC or, x86_64/i386 only, a built-in one), it is much faster than any interpreted simulator. It can handle very large designs, such as leon3/grlib. GHDL runs on GNU/Linux, Windows and macOS; on x86, x86_64, armv6/armv7/aarch32, aarch64 and ppc64. You can freely download nightly assets, use OCI images (aka Docker/Podman containers), or try building it on your own machine.

Icarus Verilog is an open source Verilog compiler that supports the IEEE-1364 Verilog HDL including IEEE1364-2005 plus extensions.

The Red Pitaya is a commercial, affordable FPGA board with fast analog inputs and outputs. This makes it useful for quantum optics experiments, in particular as a digital feedback controller for analog systems. Based on the open source software provided by the board manufacturer, PyRPL (Python RedPitaya Lockbox) implements many devices that are needed for optics experiments with the Red Pitaya. PyRPL implements various digital signal processing (DSP) modules (see features below). It allows to arbitrarily interconnect the available DSP modules and retrieve signal values on timescales below 1 ms. The graphical user interface (GUI) provides a realtime display of the various measurement instruments and allows the easy configuration of DSP signal chains and feedback controllers. At the highest abstraction level, arbitrary feedback sequences can be defined to fulfill tasks as complex as approaching and locking a resonance of a high-finesse Fabry-Perot cavity (tested up to finesse=100,000).

Firmware development/ improvement for the digital storage oscilloscope "Welec 2000a- series".

ADMS is a code generator that converts electrical compact device models specified in high-level description language into ready-to-compile c code for the API of spice simulators. Repository migrated to: https://github.com/Qucs/ADMS For checkout do: git clone https://github.com/Qucs/ADMS.git

AWS EC2 FPGA Development Kit is a set of development and runtime tools to develop, simulate, debug, compile and run hardware-accelerated applications on Amazon EC2 F1 instances. It is distributed between this GitHub repository and FPGA Developer AMI - Centos/AL2 provided by AWS with no cost of development tools. After creating an FPGA design (also called CL - Custom logic), developers can create an Amazon FPGA Image (AFI) and easily deploy it to an F1 instance. AFIs are reusable, shareable and can be deployed in a scalable and secure way. Development experience leverages an optimized compiler to allow easy new accelerator development or migration of existing C/C++/openCL, Verilog/VHDL to AWS FPGA instances. Fully custom hardware development experience provides hardware developers with the tools required for developing AFIs for AWS FPGA instances.

GHDL is the leading open source VHDL simulator. *** Now on github.com/tgingold/ghdl *** We have binary distributions for Debian Linux, Mac OSX and Windows. On other systems, getting GHDL from here means downloading the current source package and building GHDL from source. Alternatively you can get the latest source version (warning : occasionally unstable!) by pulling a snapshot from the git repository.

Verilog processor for Notepad++. Current features: - Instantiate a module - Insert registers/wires from a module - Generate a test bench template - Automatically inserts a default header for a test bench - Insert a clocked always block v1.2.0 now supports ANSI and non-ANSI module declarations. To use this plugin, select the module declaration (including parameter and I/O definitions below for non-ANSI) and click SHIFT-CTRL-C. This selects the module and parses its components. After this, all other functions are available.

OpenSOC86 is an open implementation of the x86 architecture in Verilog. The current version only implements the 16-bit part (real mode). The processor is a pipelined architecture clocked at 100 MHz in a Cyclone II speed grade -6. Therefore it can be seen as similar to a 486 in real mode. Several peripherals are also implemented in a somewhat minimalistic way, but enough to be able to boot an IBM PCXT compatible bios and MSDOS 6.22. The current implementation is only proven to boot the bios and DOS in simulation. The system is targeted to run on the DE2-70 board. In order to run the system in hardware a SDRAM and SRAM controller need to be added. These are currently in development.

A programmable signal generator and RF synthesizer for scientific experiments, especially quantum computing and quantum information processing. It includes hardware, firmware, software, and documentation, all under an open source license.

VeriWell is a full Verilog simulator. It supports nearly all of the IEEE1364-1995 standard, as well as PLI 1.0. Yes, VeriWell *is* the same simulator that was sold by Wellspring Solutions in the mid-1990 and was included with the Thomas and Moorby book

BlowfishVHDL - free fully synthesizable Blowfish encryption algorithm hardware implementation.

Official firmware for MSX++ computers and compatibles.

VHDL plugin based on http://sourceforge.net/projects/nppvhdlplugin/ This version is enhanced to include: - Insert Instantiation - Insert Signals - Create Test Bench Framework - Insert Component - Make comments Doxygen compliant - Create New Behavioral/Structural Entity Template - Create New Package File Template - Insert Synchronous Process - Insert Asynchronous Process - Insert a Default Header The default header is set in the vhdlConfig.txt file.

Infra-red Remote Control Sampling using FPGA

The “lpACLib” library contains the VHDL description of accurate and approximate versions of several arithmetic modules (like adders and multiplier of different bit-widths) and accelerators. Moreover, it also provides the corresponding software behavioral models/implementations developed in C and MATLAB to enable quality characterization. Besides our novel designs, it also contains implementations for several state-of-the-art arithmetic modules and their approximate versions. This open-source library facilitates research and development in approximate computing at higher abstraction levels, and to facilitate reproducible research and comparisons. In case of usage, please refer to our publication: Muhammad Shafique, Rehan Hafiz, Semeen Rehman, Walaa El-Harouni, Jörg Henkel, "Cross-Layer Approximate Computing: From Logic to Architectures", Design Automation Conference (DAC), 2016. Contributors: Authors, Vanshika Baoni, M. Abdullah Hanif http://ces.itec.kit.edu/lpACLib.php

The HDL Complexity Tool parses large complex hardware projects' source code to produce useful complexity results. GOALS: 1)Practical, effective and simple 2) Integrates with existing design flows 3) Used on real projects 4) Based on existing research

Video and files download for Visual trading idea to C++ or FPGA HFT Meetup File download sample: test model (Matlab 2014b with Visual Studio 2013 C++ project generated) Powerpoint MATLAB SIMULINK http://quantlabs.net/blog/2015/04/video-and-files-download-for-visual-trading-idea-to-c-or-fpga-hft-meetup/

A command-line application that generates Verilog or VHDL code for an LFSR counter of any value up to 63 bit wide. The code is written in C for Win32 platform

The Affordable BIOS Restoration Tool provides VHDL and C code to recover from failed BIOS upgrades using affordable CPLD's. EEPROM's and Flash chips can be restored with this flash programmer. Interfaces for DIP and tsop packages are being developed.

A arcade snake game purely written in verilog [ no asm or C ]

Controlix is a virtual-circuit based operating system written in RTL.

OpenWebServo is an Open Source Hardware and Software project. Its main goal is to develop a web-controlled servo system. The project includes web application, firmware and hardware design.

OpenVGA is an free and open FPGA-based implementation of a VGA compatible graphics adapter, and utilising low-cost hardware. The project includes the PCB schematic and artwork, Verilog HDL, firmware assembly code, and driver source code.

Attempt to implement DEC PDP-11 minicomputer in Xilinx FPGA