Source: https://spectrum.ieee.org/geek-life/hands-on/build-a-riscv-cpu-from-scratch

Filip Szkandera did, what many of us would like to - he built his own computer from scratch 😳. I mean, from the most basic principles just using 74XX series logic chips. Not only did he achieve his goal, he built a modular and extendable RISC-V compliant machine including a small OS, a C compiler and a few programs.

The compiler was actually made by his friend Jan Vykydal, Filip used it to build a working version of Snake. Hats off! What an achievement.

And the Pineapple One is a beauty from outside. In the inside 9 stackable modules implement all necessary functionality. The machine runs at up to 500 kHz, comes with 512kB of addressable RAM as well as 512kB of separated program memory.

The best: You can build a Pineapple One yourself. You should definitely check the project out on Hackaday.

Well done Filip!