Motorola MVME2400 User Manual
Page 167
http://www.mcg.mot.com/literature
GL-13
G
L
O
S
S
A
R
Y
XGA
EXtended Graphics Array. An improved IBM VGA monitor
standard that provides at least 256 simultaneous colors and a screen
resolution of 1024 x 768 pixels.
Y Signal
Luminance. This determines the brightness of each spot (pixel) on a
CRT screen either color or B/W systems, but not the color.