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

1. v86

   1 167 20,575 9.5 JavaScript

   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?

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3. jor1k

   2 3 1,753 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...

4. daedalOS

   3 214 11,110 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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