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wtf is topaz?

machdyne/topaz — explained in plain English

Analysis updated 2026-05-18

13CAudience · developerComplexity · 5/5Setup · hard

TL;DR

Open hardware design files, PCB layouts, and firmware for Topaz, a headless RISC-V based computer.

Mindmap

mindmap
  root((Topaz Computer))
    What it does
      Headless RISC-V computer
      Custom ASIC module
      Open hardware archive
    Tech stack
      C firmware
      KIAN-V RV32 SOC
      RISC-V
    Use cases
      Study the schematics
      Build your own unit
      Reuse the SOC design
    Audience
      Hardware engineers
      Embedded developers

Code map

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filefunction / class

Why would anyone build with this?

REASON 1

Study or replicate the schematics and PCB layout for a RISC-V based headless computer.

REASON 2

Build and flash your own Topaz computer using the provided firmware and design files.

REASON 3

Reuse the open source KIAN-V RV32 SOC design referenced by this project in another hardware project.

What's in the stack?

CRISC-V

How it stacks up

machdyne/topazcosmicvi/papers-for-windowsgonefunctorz/ariel
Stars131313
LanguageCCC
Setup difficultyhardhardhard
Complexity5/54/55/5
Audiencedeveloperdeveloperresearcher

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · hard Time to first run · 1day+

Requires sourcing physical components and fabricating or ordering a custom PCB since this is a hardware project, not software.

Design files and firmware are released under an open hardware license, except for one bundled library that uses the standard permissive MIT license.

Wtf does this do

Topaz is a piece of computer hardware, not a piece of software you install and run on your own machine. The repository describes it as a headless computer, meaning it has no built in screen or keyboard, built around a custom chip module. That chip module is based on an open source system on a chip design called KIAN-V, which itself implements the RV32 variant of the RISC-V processor architecture. What this repository actually contains is the engineering material behind that device: circuit schematics, printed circuit board layouts, the firmware that runs on the hardware, and accompanying documentation. It functions as the open source design archive for the Topaz product rather than as a downloadable application. The README itself is short and does not go into detail about how to build, flash, or operate the device. For a fuller picture, including specifications and how to buy one, the maintainers point to a dedicated product page on the machdyne website rather than documenting everything inside the repository. Because this is a hardware project, using it in practice would mean sourcing the ASIC module and any other components referenced in the schematics, assembling or ordering the printed circuit board, and flashing the provided firmware onto the board yourself, none of which is something you can do from a terminal alone. Licensing is split: the schematics, PCB layouts, firmware, and documentation as a whole are released under the Lone Dynamics Open License, except for one included library, ch32fun, which keeps its own separate MIT license.

Yoink these prompts

Prompt 1
Explain what the KIAN-V RV32 SOC is and how the Topaz computer uses it.
Prompt 2
Walk me through what I'd need to source and assemble to build a Topaz computer from these schematics.
Prompt 3
Summarize the licensing terms that apply to the Topaz repository's schematics, firmware, and the ch32fun library.
Prompt 4
Help me find the Topaz product page for more specifications beyond what's in this repository.

Frequently asked questions

wtf is topaz?

Open hardware design files, PCB layouts, and firmware for Topaz, a headless RISC-V based computer.

What language is topaz written in?

Mainly C. The stack also includes C, RISC-V.

What license does topaz use?

Design files and firmware are released under an open hardware license, except for one bundled library that uses the standard permissive MIT license.

How hard is topaz to set up?

Setup difficulty is rated hard, with roughly 1day+ to a first successful run.

Who is topaz for?

Mainly developer.

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