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Appendix B
Display Controller and
Modes
Display controller
The display controller interprets software commands into hardware commands that
turn particular pels on or off.
The controller is an advanced Video Graphics Array (VGA) that provides Super
VGA (SVGA) and Extended Graphics Array (XGA) support for the internal LCD and
external monitors. The displays up to 1024 x 768 (XGA). The controller also sup-
ports simultaneous display on the internal LCD and on an external monitor.
A high-resolution external monitor connected to the computer can display up to
1600 horizontal and 1200 vertical pixels and up to 64K colors.
The display controller also controls the video mode, which uses industry standard
rules to govern the screen resolution and the maximum number of colors that can be
displayed on screen.
Software written for a given video mode will run on any computer that supports the
mode.
The computer's display controller supports all VGA and SVGA modes, the most
widely used industry standards.
B-1
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