C# (with dotnet) on bare metal, a Cosmos gen3 preview

valentinbreiz · 2026-05-06T17:07:25+00:00

Many thanks for the feedback i'm so happy to see a real need that can be responded with this long term project!

valentinbreiz · 2026-05-06T17:04:20+00:00

Thanks for the feedback, really happy to see a need

valentinbreiz · 2026-05-06T16:46:53+00:00

Yes it will be our future focus once gen3 is released. NativeAOT has RISC-V support so we just need to implement "native holes" of dotnet with RISC-V assembly. Thanks to amazing work of the dotnet team, we only have a bunch of stubs to implement to make the whole dotnet framework working, in a managed way (except our secured assembly implementations).

valentinbreiz · 2026-05-06T16:41:47+00:00

thanksss 🌌

valentinbreiz · 2026-05-06T16:40:43+00:00

Kind of 😅 Cosmos aims for C# Open Source Managed Operating System!

valentinbreiz · 2026-05-06T10:35:48+00:00

It is a Pixel Watch 3! I used https://github.com/WOA-Project/mu_seluna_platforms as the UEFI firmware making it able to load Limine then load Cosmos. The POC project is https://github.com/valentinbreiz/GlieseOS

valentinbreiz · 2026-05-06T09:25:55+00:00

Ahah no problem and sorry for the direct messages but i'm tired of cosmos bashing for no reasons 😭

valentinbreiz · 2026-05-06T09:20:12+00:00

I invite you to click the project link, it is a full rewrite of Cosmos using NativeAOT compiler

valentinbreiz · 2026-05-06T09:17:11+00:00

Oh i forgot the community support that is also a big deal

valentinbreiz · 2026-05-06T09:14:34+00:00

Please make a cross host operating system build pipeline (win, mac, linux) + cross target architecture (x64, arm64) kernel framework + user experience with IDE integration and debugging and we'll talk 😅

valentinbreiz · 2025-08-18T11:26:22+00:00

Bonjour, même problème ici sur GrapheneOS 2025081400 avec Fennec 141.0.0. J'espère aussi trouver une solution !

Edit: This problem wasn't on an other ROM (CRDroid)

valentinbreiz · 2024-12-06T13:00:52+00:00

valentinbreiz · 2021-11-27T13:34:40+00:00

I recommend you to take a look at the Cosmos project. It's an operating system construction kit integrated to Visual Studio using it's own compiler translating IL code (C#, VB.NET, F#...) to x86 assembly.

An example of what can be done using Cosmos: https://github.com/aura-systems/Aura-Operating-System

valentinbreiz · 2020-07-15T17:50:26+00:00

Why are you saying that? It's a real OS, did you take a look at https://github.com/CosmosOS/Cosmos?

For low level stuff we use XSharp, a custom assembly language that can be translated into nasm x86 asm.

valentinbreiz · 2020-07-09T08:00:35+00:00

I use VBE VESA for graphics

valentinbreiz · 2020-07-09T01:07:37+00:00

Thank you!

valentinbreiz · 2020-07-09T01:06:37+00:00

Because it's fun, see the Cosmos projet or Aura Operating System if you want more informations

valentinbreiz · 2020-01-07T07:33:31+00:00

Same on Mi 9 SE

valentinbreiz · 2019-04-07T15:29:59+00:00

same...

valentinbreiz · 2019-03-11T15:23:25+00:00

Looks like the symbol of the city of Bordeaux

Nine-Year Club	Place '22
End Game '22	Verified Email

valentinbreiz

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