Running a Minecraft Server and more on a 1960s UNIVAC Computer
Summary
This post documents a retrocomputing project to run modern software—including a Minecraft server—on a 1960s UNIVAC 1219B. It covers building emulators, toolchains, and fuzz tests, plus the surprising role of AI-assisted tooling (Claude Code) in optimizing the emulator. The piece highlights hardware quirks like 18-bit words and ones’ complement arithmetic, and culminates in a successful PPP/IP/TCP webserver and Minecraft connection over a serial link.