OS in 1000 Lines: A Minimalist Tour of a RISC-V Kernel

Join us for a hands-on tour of a compact, 1,000-line operating system built for RISC-V. We unpack how it boots with OpenSBI, runs a tiny kernel, and exposes multitasking, paging, system calls, a basic file system, and a shell—deliberately omitting heavyweight features like interrupts. Along the way we demystify CPU modes, inline assembly, and how QEMU’s debugging tools bring this lean OS to life.

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