The display controller is a hardware controller that formats information for the screen to display. For example, it interprets a software command to turn a particular pel on or off into hardware commands that address the specific pixels required to execute the software command.
The T2150CD series computers’ display controller is an advanced Video Graphics Array (VGA) that provides Super VGA (SVGA) support for the internal LCD and external monitors. The LCD panel displays up to 640 horizontal and 480 vertical pixels, which render 25 lines of standard text 80 characters wide. The T2150CDT displays up to 64K colors and the T2150CDS displays up to 256 colors. A
The advanced display controller lets you run
The T2150CD series is equipped with a local video bus for superior performance of your display. The T2150CD series computers can display on both the internal LCD and external CRT at the same time. You also have the option of displaying on the LCD only or on the CRT only.
The software utilities that come with the T2150CD series computer provide drivers that accelerate Windows graphics and improve performance for both the internal display and an external monitor. Refer to Chapter 10, Toshiba Utilities and Drivers, for information on installling the drivers.
Video RAM
The T2150CD series provides 1MB of RAM for video display.
Video Modes
The video mode is controlled by the display controller, which uses industry standard rules to govern the screen resolution and the maximum number of colors that can be displayed on screen. These standard rules are called video modes.
Software written for a given video mode will run on any computer that supports the mode. An application’s video mode depends on the screen resolution required, the number of colors used, the font size and whether it runs in text or graphics mode.
The T2150CD series computers’ display controller supports all VGA and SVGA modes.
There are two basic types of video modes: text mode and graphics mode. Refer to the
