Reviving the UCSD p-System: A Cross-Platform Compilation Legend

The author revisits the UCSD p-System, a cross-platform operating system and compiler from the 1970s. It achieved portability across diverse machines (from PDP-11 to Apple II) through its p-machine virtual machine. The author shares personal experiences using Apple Pascal and UCSD Pascal in high school and plans to rebuild a p-machine emulator in Rust, continuing its legacy and addressing issues with missing documentation and outdated compiler dependencies in existing tools.