I have found the 200W31DS on V-D.com as well but all it does is download a software onto your computer that only scans hardware and download according drivers you can't download the file you actually want.
DriverGuide only seems to have NT4.0 drivers and unfortunately modern Macronix helpdesk people could only point me in that direction.
Archive.org seems to have the download pages from macronix.com archived between 2001 and 2003 but it does not have the files archived as they have very draconian download links 😒
I'm kind of stuck. This is such a great DOS card, Windows 3.1 and OS2 drivers would have been amazing for me 🙁
I've done some FTP searches to no avail.
Do you happen to know of people who've made backups of driver FTPs from back in the days? Maybe it could be on a public/private retro stuff FTP of some kind?
I really hope these drivers haven't been lost to time..
Retronautics: A digital gallery of my retro computers, hardware and projects.