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Advanced SetupCBI/CGI Technical Reference
Chassis Plans 5-9
accessed more rapidly than ROM and the data bus is wider to RAM. The default setting
for the video BIOS segments is Cached.
Other 16KB ROM segments may be shadowed in the memory area from C800H to
E000H, depending upon preferences and system requirements. The ROM area that is not
used by ISA adapter cards is allocated to PCI adapter cards.
The Setup screen displays the system option:
XXXX,16K Shadow Cached
where XXXX is the base address of the segment of memory to be shadowed.
Three options are available:
• Select Enabled to write the contents of the specified ROM area to the same
address in system memory (RAM) for faster execution.
• Select Cached to write the contents of the specified ROM area to the same
address in system memory (RAM), if an adapter ROM is using the ROM
area. This also indicates that the contents of the RAM area can be read from
and written to cache memory.
• Select Disabled if you do not want to copy the specified ROM area to
RAM. The contents of the video ROM cannot be read from or written to
cache memory.
Saving and Exiting
When you have made all desired changes to Advanced CMOS Setup, press <Esc> to
return to the AMIBIOS Setup Main Menu screen.
You may make changes to other Setup options before exiting from AMIBIOS Setup.
You may save the changes you have just made or you may exit from Setup without
saving your changes.