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On 2026-05-10 @levelsio connected @pieter's Windows 3.11 PC (1993) to @ryolu_'s…

Brief

@levelsio demonstrates that @pieter's Windows 3.11 PC (1993) is now networked with @ryolu_'s Ryos X Web OS, enabling real‑time chat between a browser‑emulated PC and an Apple running MacOS 7.1 (1992). The stack uses WebAssembly/JS emulators → emulated COM1 modem → TCP/IP over WebSockets → PPP daemon → reverse‑engineered America Online server, and messages arrive in milliseconds; planned additions include Atari ST, Amiga, Apple II and Windows XP (32‑bit).

Why it matters

On 2026-05-10 @levelsio connected @pieter's Windows 3.11 PC (1993) to @ryolu_'s Ryos X Web OS, demoing in-browser chat between pieter.com's Windows 3.11 and dialtone.live Apple running MacOS 7.1 (1992).

Key details

  • The connection pipeline runs emulators in WebAssembly/JS → an emulated modem on COM1 → emulated TCP/IP over WebSockets → a PPP daemon → the real internet → a reverse‑engineered America Online server → back, with messages arriving in milliseconds.
  • @levelsio plans to add Atari ST, Amiga, Apple II and Windows XP to the networked retro‑computer project, noting Windows XP is difficult because it is 32‑bit.
Source evidence

💾 @pieter's Windows 3.11 PC is now connected to another retro computer on the web

It's @ryolu_'s Ryos X, a MacOS X inspired Web OS where you can listen music, watch videos, play games, browse the web and now chat with people on my retro PC too

My dream with this project was to connect it to other retro computers on the web so they can all participate as first class citizens on the internet eventhough they're all old computers running in your browser, and that's happening now 😊

My dreams to see in the browser AND connected to the real internet:
- Atari ST (we had one as kids for awhile)
- Amiga (never had one, but heard a lot about it)
- Apple II (every SF guy has this one at home)
- Windows XP (I wanna do it but it's hard cause 32-bit)

Video

@levelsio (@levelsio)

💬 Here's the demo of pieter.com's PC running Windows 3.11 (from 1993) talking to dialtone.live Apple Computer running MacOS 7.1 (from 1992) both running inside your browser

It's crazy how fast the messages arrive, I'd have expected some delay because of the layers it has to go through

It goes from a PC/Mac emulator inside WebAssembly in JS sending it via an emulated modem on COM1 port with emulated TCP/IP over WebSockets then routed via a PPP daemon to the real internet and to the reverse engineered America Online server and then back again to the other computer like that

But everything happens in literally milliseconds

Modern day computing and the internet is truly insanely fast 😊

Video

— https://nitter.net/levelsio/status/2005007436793438542#m