avr8js VS js-dos

Wokwi is free open source and neat with an MIT license https://github.com/wokwi/avr8js https://wokwi.com

What I really want is a modern microcontroller emulator. avr8js is really spectacular. Execute Code provides a great way to run C, C++, and Rust snippets, but running a program on an OS versus on an MCU is very different and code is generally not very portable between them.

We simulate the actual Arduino hardware (based on this avr8js repo) which runs the compiled Arduino code. To compile the code itself, we use Arduino CLI.

Check out something like https://github.com/wokwi/avr8js

Here Uri is tackling a subtle but impactful bug in the AVR simulator. He starts by analyzing a tiny Arduino program that shows the problem: an LED turns off when it shouldn't. Then we dive into the assembly code, and take a look at the implementation of the offending instructions in the simulator's source code. Once we pinned down the bug (pun intended), we create a regression test case and change the simulator's code until the tests are all green again. Enjoy the ride! ▸ GitHub issue with the all details: https://github.com/wokwi/avr8js/issue... ▸ Wokwi online Arduino simulator: https://wokwi.com

I hope you have heard about the Wokwi Arduino Simulator. There is an engine thatthat is open source. You can hop on the discord channel and get more help/support from the community over there. there are a lot of welcoming active people helping out each other.

This is a completely free Arduino simulator based on the AVR8js engine (open-source on GitHub)/

I don't know whether you saw it, but /u/wokwi has actually done a similar thing with https://github.com/wokwi/avr8js in a totally different way - no WASM, an AVR implementation in JavaScript. Total madness but it works!

Funny timing. I actually just built an in-house server this past Friday to host the original Oregon Trail using js-dos because I don't like poking holes in the content filter for sites like archive.org. I didn't worry too much about copyright, as I assumed it was abandonware at this point.

Thanks glad you liked it! It's actually not a port but is running on DOS via https://js-dos.com/, same as Doom and Jazz Jackrabbit. I actually have my 8 favorite Shareware games on my website which can all be played.

https://dustinbrett.com/?app=FileExplorer&url=/Users/Public/...

Maybe something like https://js-dos.com/ for dos and https://www.emulatorjs.com/ for old game consoles?

DOS Emulation via js-dos

Adding emulators is something I always wanted to do and I have plans to add more in 2022. For 2021 I was able to add Virtual x86 (.img/.iso), BoxedWine (.exe/.zip), JS-DOS (.exe/.zip) & Ruffle (.swf/.spl). Most of these emulators utilize WebAssembly to run non-JS code.

It can indeed run some real windows programs via BoxedWine. I've set it up so you can double click an .exe and it will automatically try and run it, although typically if it needs support dll's then they are all in a zip. For example the zip file for Notepad++ 32-bit x86 can directly run in BoxedWine. You just drag the zip file on, right click and select run in BoxedWine. It can also run DOS apps/games via JS-DOS and has similar mappings for exe/zip. Both emulators make use of WASM as do several other apps, such as the x86 emulator shown in the demo video. My main "OS" is only JS/HTML/CSS written in TypeScript with React/Styled Components.