This post won't solve your request.
I was just wondering what kind of software you plan to design. Do you build a game ?
I may be interested in an easy usable code in C to get a full screen display on a ST in low resolution (16 colors is enough) compatible with a GEM application. My aim is to display a map as big as possible on screen and scroll it for hidden parts. I am still in an "evaluation process" to determine if I could design what I have on my minds...