[Agp.cooper] saw a vintage 4Kx4 bit RAM chip and decided that it needed a CPU design to match. The TTL design fits on two boards and has a functional front panel. This custom CPU project has a few … ...

The 32-bit version of the Raspberry Pi OS image isn't going away, and it remains supported on both 32- and 64-bit Pi devices for anyone who prefers or needs it—old Pi and Pi 2 boards with 32-bit ...