V86: x86 virtualization in the browser, recompiling x86 to WASM on the fly

• v86

  153 19,092 9.0 Rust

  x86 PC emulator and x86-to-wasm JIT, running in the browser

> If the title is true, that would be a huge achievement.

Fundamentally it's "just" a JIT that compiles to WASM. It's a ton of effort to build something like that, but I think fundamentally it's not an impossible undertaking.

The JIT seems to be living there, so you can probably explore from there: https://github.com/copy/v86/blob/master/src/rust/jit.rs

WRT speed advantage: compared to what?

• jor1k

  3 1,713 1.8 JavaScript

  Online OR1K Emulator running Linux

If the title is true, that would be a huge achievement. Unfortunately, the page says nothing about how it works and nothing about the speed advantage you get.

For my emulator jor1k [1] I tried something similar years ago [2]. However I haven't continued on this topic because of priority shifts. But the potential speed advantages are astonishing. My proof of context reached more than 1 billion emulated machine instructions per second.

[1] https://github.com/s-macke/jor1k

[2] https://github.com/s-macke/jor1k/wiki/Breaking-the-1-billion...

• SurveyJS

  surveyjs.io sponsored

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• daedalOS

  210 8,072 9.8 JavaScript

  Desktop environment in the browser

This is an awesome project! I've integrated it into my Desktop Environment in the browser so that you can drag on `.iso` & `.img` files and run them directly in the emulator. It also automatically saves states on close into `/Users/Public/Snapshots`. For networking I am using the same WebSocket proxy that v86 uses.

https://github.com/DustinBrett/daedalOS

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