Toshiba Tecra A8 manual Display Controller and Modes, Display controller, Video modes

Appendix B

Display Controller and Modes

Display controller

The display controller interprets software commands into hardware commands that turn particular parts on the screen on or off.

■15.4" WXGA, 1280 horizontal × 800 vertical pixels

Because of the LCD’s increased resolution, lines may appear broken in DOS mode.

A high-resolution external monitor connected to the computer can display up to 2,048 horizontal and 1,536 vertical pixels at up to 16M 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.

Video modes

The computer supports video modes defined in the tables below. If your application offers a selection of mode numbers that do not match the numbers on the table, select a mode based on mode type, resolution, character matrix, number of colors and refresh rates. Also, if your software supports both graphics and text modes, the screen display may appear to operate faster using a text mode.

User’s Manual B-1