I have

-a combo sound/PS2/VGA card. It has a Winbond chipset.

-two Matrox cards with DB-15/VGA. They have a MGA chipset and are labeled 1996 and 1997 respectively.

-two Diamond Multimedia cards. One has a S3 Trio64 chipset; the other has a Rendition chipset. They are both labeled 1994 and 1997 and are VGA only.

Are these flashable?