according to datasheets, chips 82c435/436 is an ega chipset, while 82c441/442 is a vga chipset.

i have seen some 82c435/436 cards with both 9pin and 15pin header in china, but don't see any ramdacs on the card, so i believed that they are just ega output converted to vga header.

but then i found something like this:
https://wiki.preterhuman.net/STB_VGA_Extra
as you can see, it has a ramdac on it to output analog vga signal. but does it support the 320*200*256color mode? and has anyone tried these cards?