EGA and VGA Adapter SCREEN Mode, Monochrome Monitor Only
SCREEN 10: 640 x 350 graphics, monochrome monitor only
  - 80 x 25 or 80 x 43 text format, 8 x 14 or 8 x 8 character box size
  - 128K page size, page range is 0 (128K) or 0-1 (256K)
  - Up to 9 pseudocolors assigned to 4 attributes