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17 articles filed under Systems Programming, newest first.
Chapter 1 · Operating Systems
Stop treating the OS as a black box. Discover why building an AArch64 kernel from scratch on ARM is the ultimate systems programming challenge for 2026. From silicon to shell, we go all the way down.
11 min Beginner
Operating Systems
A bare-metal journey from a powered-on AArch64 CPU to a working interactive shell. Thirteen chapters of writing a kernel from scratch, covering the bootloader, MMU, interrupts, allocator, processes, syscalls, filesystem and a Rust no_std module, all running on QEMU's virt machine.
3 min Intermediate
Chapter 7 · Computer Architecture
Learn how CPUs communicate with devices through memory-mapped I/O, interrupts, DMA, PCIe, multicore systems, GPUs, and modern system-on-chip designs.
35 min Intermediate
Chapter 5 · Computer Architecture
Learn how the computer memory hierarchy works, including CPU registers, L1/L2/L3 cache, RAM, SSDs, virtual memory, TLBs, and page faults.
33 min Intermediate
Programming
Write, assemble, and link your first x86-64 assembly Hello World program using NASM, Docker, and Linux syscalls. Supports x86-64 & Apple Silicon.
14 min Beginner