🚀 go-pugleaf

Well I'm no expert on this, and can't help you for detecting a super 
vga, but it doesn't look like anybody's replied so here's some assembly 
that will detect what you want through the BIOS:
Call function $1A of interrupt $10 with AL set to 0, and you will get 07 or $0
$07 or $08 returned in BL if a VGA is active.  You will also get $0A 
or $0B if they have an MCGA.  If you get any other result, or if AL 
is not set to $1A, then check for other cards:

Call INT $10 with AH=$12, BL = $10.  If BL is returned as $10, they 
don't have an EGA, so keep looking...

Call  INT $10 , AH = $0F, and if AL is 7 then they have either a mono 
adapter or a Hercules.

Otherwise they could have anything.  Probably a CGA, but possibly something 
like the built in PCjr graphics.  

Don't count on this working.  I have used it before & it works on standard 
stuff, but it won't detect super vga.  Good luck anyway.

Gary.