9.9 VGA-Compatible Most VGA-compatible display-adapter cards and main-adapter chips use additional memory to enhance their performance. When Windows is running in 386 enhanced mode and is configured for VGA, Windows detects most of these cards and automatically excludes the additional memory. However, if you have an enhanced VGA that Windows does not recognize, you must exclude the additional memory yourself by adding the following line to the [386Enh] section of the SYSTEM.INI file: emmexclude=C400-C7FF For more information about modifying the SYSTEM.INI file, see the SYSINI.WRI online document. .