ViewPort
  and Simple Sprite colors, 618
  ColorMap, 542
  colors, 543, 553
  display instructions, 555
  display memory, 549
  displaying, 541
  function, 541
  Height, 542
  interlaced, 548
  low-resolution, 553
  modes, 544, 545
  Modes in Release 2, 564
  multiple, 553
  parameters, 542
  Width, 543
  width of and sprite display, 543