The shadow RAM feature speeds up processing by moving the system and video BIOS into the RAM area of memory.

With 512KB of video RAM, the VGA controller supports standard resolutions up to 640 x 480 in 16 colors and extended resolutions up to 640 x 480 in 256 colors or 1024 x 768 in

16 colors (interlaced or non-interlaced). With 1MB of video memory, the controller supports extended resolutions up to 1024 x 768 in up to 256 colors.

VGA Utilities

Your computer comes with special VGA drivers and utilities for use with the integrated VGA interface. With these drivers, you can take advantage of the extended VGA features such as high resolutions and 132-column text mode when you run popular application programs. Drivers for common applications are described in Chapter 5.

Optional Equipment

You can easily upgrade your computer by installing a wide variety of options, as described in Chapters 3 and 4.

Microprocessor

You can upgrade your system with these microprocessors:

4 8 6 S X / 3 3

4 8 6 D X / 3 3

4 8 6 D X 2 / 5 0

486DX2/66 .

2Introduction