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4. BIOS Setup
4.4.12 C000 Shadow (64K)
These options specify how the 64 KB of video ROM at C0000h is treated. The settings are:
Setting
Description
Disabled
The contents of the video ROM are not copied to RAM.
Enabled
The contents of the video ROM area from C0000h – C7FFFh are copied
(shadowed) from ROM to RAM for faster execution.
Cached
The contents of the video ROM area from C0000h – C7FFFh are copied
from ROM to RAM and can be written to or read from cache memory.
4.4.13 D000 Shadow (64K)
These options enable shadowing of the contents of the ROM area named in the option. The
ROM area not used by ISA adapter cards is allocated to PCI adapter cards. The settings are:
Setting
Description
Disabled
The contents of the video ROM are not copied to RAM.
Cached
The contents of the video ROM area from C0000h – C7FFFh are copied
from ROM to RAM and can be written to or read from cache memory.
Enabled
The contents of the video ROM area from C0000h – C7FFFh are copied
(shadowed) from ROM to RAM for faster execution.