Hi: if you have a look at this
post header, don't you think guys visiting the Programming forum will be likelier to understand what it is about and, therefor, to provide a solution for it?
If I judge according to my experience, the hardware forum, in spite of its name, is more for things at the "high level", like printers, scanners, video monitors and the like. While this, although just belonging to a video card, speaks, in the first place, about text mode, a thing barely used in the community and about such a technicality as low-high intensity. Regards.