Video Adapter Test Program - by Aaron Johnson

This program uses portions of code from John Bridges' VGAKIT, and
Bob Berry's VIDEOID

This program will attempt to test the various video modes of your video
adapter.  Basically it will set the mode, then draw moving lines on your
screen until you press the ESC key.  Pressing SPACE will reset the lines.

You can run this program three ways:

VIDEO A - will attempt to identify your adapter and tell you the
          kind of VGA card & how much memory you have, and what video
          modes it thinks you can use.  It will then attempt to call
          the highest 256-color mode and the highest 16-color mode
          available, with the above mentioned drawing routine.
          if you don't have a VGA card, it will only identify the adapter

VIDEO M#- where # is the mode # (base 10) to pass to register AX. The program
          will tell you what resolution the mode # results in.

VIDEO # - will attempt to set a mode based on an internal mode list.
          # is a number taken from the following video mode list:

           0.  CGA  320 x 200 x   4           1.  CGA  640 x 200 x   2
           2.  EGA  320 x 200 x  16           3.  EGA  640 x 350 x   2
           4.  EGA  640 x 350 x  16           5. MCGA  320 x 200 x 256
           6.  VGA  640 x 480 x   2           7.  VGA  640 x 480 x  16
           8. EEGA  800 x 600 x  16           9. EEGA 1024 x 768 x  16
          10. SVGA  640 x 400 x 256          11. SVGA  640 x 480 x 256
          12. SVGA  800 x 600 x 256          13. SVGA 1024 x 768 x 256
          14. *VGA  320 x 400 x 256          15. *VGA  320 x 480 x 256
          16. *VGA  360 x 480 x 256          17. *VGA  376 x 564 x 256
          18. *VGA  400 x 564 x 256          19. *VGA  400 x 600 x 256
          20. *VGA  704 x 528 x  16          21. *VGA  720 x 540 x  16
          22. *VGA  736 x 552 x  16          23. *VGA  752 x 564 x  16
          24. *VGA  768 x 576 x  16          25. *VGA  784 x 588 x  16
          26. *VGA  800 x 600 x  16

       * Register Compatible VGA Adapters ONLY!