https://www.hackster.io/janost/ibm-pc-xt-emulator-on-an-esp8266-42abcc
IBM PC-XT Emulator on an ESP8266 - Hackster.io
This is a PC-XT Emulator running on a standalone Wemos D1 Mini with disk and 80x25 CGA NTSC video output. Find this and other hardware projects on Hackster.io.
ibm pc xtemulatoresp8266hacksterio