TL;DR
Nagy Krisztián has revived an Intel 286 CPU by creating a simulated system using a Raspberry Pi Pico. With just 68 pins to manage, the project involved wiring the CPU to the microcontroller, which emulates the other components the 286 expects to communicate with. The setup includes a PLCC-68 socket, an adapter PCB, a breadboard, and MCP23S17 logic expanders to increase I/O capability.