Definitions for "MCGA"
MultiColour Graphics Array. A standard for a computer's display which has a definition of up to 640 x 200 dots (pixels) in monochrome and 320 x 200 in 256 colours from a choice of 262,144.
This is a graphics standard prior to VGA, which allows 320x200 resolutions with 256 colors, or 640x400 resolutions with 2 colors. It is a bit better than CGA.
a video mode that provides CGA support with 640x480x2 and 320x200x256 video modes.