A practical guide to building an AI inference server from retired enterprise GPUs. Four Tesla P40s, 96GB of VRAM, $2,500 all-in, and the benchmarks to prove it was worth it.
JokelaOS is an x86 kernel written from scratch: no forks, no libc. Pure C and NASM assembly targeting i686, with a network stack, preemptive multitasking, paging, Ring 3 user mode, syscalls, and an interactive shell. A deep technical walkthrough of what it takes to go from a Multiboot header to a functioning operating system.
Eric Raymond's 1997 essay argued that decentralized, bazaar-style development would outcompete centralized cathedral models. Nearly three decades later, the bazaar won, but not the way Raymond imagined. The cathedral came back wearing bazaar clothes, and the efficiency gains from free infrastructure created more software, not less. What happened, and what it means.
Certain processors (the Z80, 68000, 6502, 8051) have survived for four decades and counting while thousands of competitors vanished. This isn't nostalgia. It's a story about ISA simplicity, second-sourcing, toolchain inertia, and why the economics of "good enough" beat the engineering of "better" nearly every time.
Part one of a two-part series on designing a custom dual-Z80 RetroShield PCB. This piece covers the design process: choosing a shared-bus architecture, creating new schematic symbols, modifying the PCB layout programmatically, autorouting with Freerouting, and generating production Gerber files, all done over SSH without touching a GUI.
If AI follows a Jevons trajectory (and five pieces in this series argue that it does), the investment question isn't whether demand will expand, but where the expansion creates bottlenecks. This piece maps the Jevons framework onto concrete investment layers: energy, physical infrastructure, custom silicon, and the application tier. It also addresses the most common objection (that GPU diminishing returns cap the expansion) and explains why multiple overlapping cost curves make the case stronger, not weaker.
