BBN TC2000
An MC88100 emulator running nX — BBN's 4.3 BSD for the Butterfly TC2000 —
booted from a 1989 install tape, compiled to WebAssembly.
Source code
What you are looking at
Pressing Boot the machine downloads the kernel and the tape's UFS
filesystem, then starts the emulator at the kernel's entry
point. All of the [nx] messages are coming from the actual
kernel, exactly as it would have been seen on a real TC2000 in 1989.
When the kernel reaches the point where the swapper goes idle, the emulator
starts /bin/sh off the tape as a genuine nX process, and routes
the terminal to it.
Things to try at the # prompt
ls /bin— what shipped on the install tape.ls /usr/games— collection of games from another tape, which I combined into this boot image.dfandls -l /dev
date— 1989, as configuredgrep vt100 /etc/termcap- Ctrl+D — halt the machine