Spacewar PDP1 Source Code

There is no one PDP-1 Source code it turns out.

It's complicated. Check here. https://www.masswerk.at/spacewar/sources/

Check out a real deep dive into the source code and by default the PDP-1 https://www.masswerk.at/spacewar/inside/

This awesome work is all courtesy of Norbert Landsteiner of mass:werk https://www.masswerk.at/info.php

Explore the site, there's also a Space War emulator and a re-implementation in javascript.