I have no idea about this but thought some of you guys that have been in tech since the beginning might enjoy this article.
Open-Source z386 Brings Intel 80386 Microcode Back to Life
z386 is an open-source 80386-class FPGA CPU core that uses recovered Intel 386 microcode to run DOS and protected-mode software.
z386, an open-source FPGA CPU core that recreates a once-legendary Intel 80386-class processor (i386) using recovered original microcode, has reached the point where it can boot DOS, run protected-mode software, and play classic games such as Doom and Cannon Fodder.