Abit BX6 User Manual page 37

Introduction of BIOS
Video BIOS Shadow:
This option is used to define whether the BIOS on the video card uses shadow
feature or not. You should set this option to Enabled, otherwise the display
performance of the system will greatly decrease.
Shadowing address ranges (C8000-CBFFF Shadow):
This option allows you to decide if the memory block (BIOS) of an interface
card at the address C8000-CBFFF uses the shadow feature or not. If you have
no interface card using this memory block, don't enable this option.
Shadowing address ranges (CC000-CFFFF Shadow):
This option allows you to decide if the memory block (BIOS) of an interface
card at the address CC000-CFFFF uses the shadow feature or not. If you have
no interface card using this memory block, don't enable this option.
Shadowing address ranges (D0000-D3FFF Shadow):
This option allows you to decide if the memory block (BIOS) of an interface
card at the address D0000-D3FFF uses the shadow feature or not. If you have
no interface card using this memory block, don't enable this option.
Shadowing address ranges (D4000-D7FFF Shadow):
This option allows you to decide if the memory block (BIOS) of an interface
card at the address D4000-D7FFF uses the shadow feature or not. If you have
no interface card using this memory block, don't enable this option.
Shadowing address ranges (D8000-DBFFF Shadow):
This option allows you to decide if the memory block (BIOS) of an interface
card at the address D8000-DBFFF uses the shadow feature or not. If you have
no interface card using this memory block, don't enable this option.
Shadowing address ranges (DC000-DFFFF Shadow):
This option allows you to decide if the memory block (BIOS) of an interface
card at the address DC000-DFFFF uses the shadow feature or not. If you have
no interface card using this memory block, don't enable this option.
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