Pulse: a New VHDL Simulator
Pulse is a new open-source VHDL simulator written in C++ that offers a complete toolchain including a compiler and text-based waveform output. The project is currently in development and supports only basic IEEE packages and types due to the complexity of the VHDL language. Future updates plan to add generics, enhanced simulation capabilities, and mixed-language support with Verilog.
- ▪Pulse is an open-source VHDL simulator written in C++ under the MIT license.
- ▪The toolchain includes a compiler and a text-based user interface for waveform output to ensure cross-platform compatibility.
- ▪Current limitations include support only for basic IEEE packages and types, with default values not yet supported.
- ▪The project roadmap includes adding generics, additional types, and mixed-language support with Verilog.
- ▪The only dependencies required for Pulse are a C++20 capable compiler and CMake.
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| Canonical URL | https://hackaday.com/2026/09/14/pulse-a-new-vhdl-simulator/ |
| Publication time | Mon, 14 Sep 2026 18:00:00 +0000 |
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Pulse: A New VHDL Simulator No comments by: Maya Posch September 14, 2026 Title: Copy Short Link: Copy With VHDL being arguably more deterministic and bullet-proof than Verilog, it’s good to see another open source VHDL simulator joining the fray that is not a variation of ghdl. Written by [Óscar Grimal] in C++ with an MIT license, the Pulse project is a still in progress package that provides the entire toolchain, from the compiler to the requisite waveform output. This waveform output is provided in the form of a text-based user interface (TUI), which at the very least helps a lot with making it cross-platform compatible. As dependencies only a C++20 capable compiler and CMake are indicated.
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