Before I was going to batch everything I was planning on breaking out the very old Borland Turbo C 3.5 and coding up my own controller.    I used to love playing with the CGA/EGA graphics library it had when I went through high school.   We were the first grade school in California to have IBM PC's, then the first to offer a computer repair class, then the first to have a state certified C++ class.  I actually got a state certification for passing.  I was always taking the simple programs we were supposed to code and turning them into graphical masterpieces.   Such as the old rook traveling through every space on the board in the least amount of moves challenge.  I made a chessboard graphically and everything.   Mind you we were on 386 and 486 machines.

For our final we had to make an app with a class function and implement it as an object for the program to use and manipulate.   I had just found out about _int13 graphics... so I wrote a "LightCycle" class and made a tron arcade game remake.   It was interesting overall to use Mode13 because the simple things we take for granted like plotting a circle;  it quite a different concept when you code it:

Y=w±sqrt(r²+(x-h)²)
For symmetry: W == H == R
but you can mess with them to change the circle's properties.
Its more convoluted in code form for sure.... But I even stumped many of my math teachers on graphing a circle back then =)
If anyone has a DOS and Mode13 capable retro pc around with a VGA card;  I can give you the link to a modified copy of my tron app which is a Nibbles remake.   I suggest a 486DX2-66 or DX4-100.  Anything faster and it can be.....    well, you ll find out.  Be sure to not modify the file at all, and that it is named correctly or it will know.
 http://nomadpaintball.tripod.com/nibbles.zip