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[ The PC Guide | Systems and Components Reference Guide | Motherboard and System Devices | System BIOS | BIOS Settings | Advanced Features ] Video BIOS Shadow This parameter, when enabled, turns on BIOS ROM shadowing for the block of memory normally used for standard VGA video ROM code, which is C0000 to C7FFF (32K). See here for a full description of what ROM shadowing does; in short, it speeds up your system by copying the contents of your video BIOS code from the slow ROM in which it resides into faster RAM. The default for this setting depends on the particular system a great deal.. Enabling it will increase performance. Disable it if it causes system problems, particularly those related to the video subsystem.
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Note: On some systems the
video BIOS shadow setting is named for the address range the video BIOS occupies,
C0000-C7FFFh, instead of being specifically called "Video BIOS Shadow".
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