https://web.archive.org/web/20230315024557/http://www.columbia.edu/~em36/ntvdmx64.html https://web.archive.org/web/20230315024557/http://www.columb... Or just

https://web.archive.org/web/20230315024557/http://www.columbia.edu/~em36/ntvdmx64.html https://web.archive.org/web/20230315024557/http://www.columb... Or just run dosbox for full and isolated emulation. Full circle, there's also djgpp and openwatcom for semi-modern retro development. https://www.delorie.com/djgpp https://www.delorie.com/djgpp https://openwatcom.org https://openwatcom.org I collect retro compilers, programming books, software, and hardware.