Intel SBC-455 Disabled, Enabled, Shadow

Chapter 3 AMI WinBIOS setup 45
C000,16 KB Shadow D000,16KB Shadow
C400,16 KB Shadow D400,16KB Shadow
C800,16 KB Shadow D800,16KB Shadow
CC00,16 KB Shadow DC00,16KB Shadow
These options control the location of the contents of the 16KB of
ROM beginning at the specified memory location. If no adapter
ROM is using the named ROM area, this area is made available to
the local bus. The settings are:
E000,64KB Shadow
Setting Description
Shadow The contents of C 0000h - C3FFFh are written to the
same address in system memory (RAM) for faster
execution.
Enabled The contents of the named ROM area are written to
the same address in system memory (RAM) for
faster execution, if an adapter ROM will be using the
named ROM area. Also, the contents of the RAM
area can be read from and written to cache memory.
Disabled The video ROM is not copied to RAM. The contents
of the video ROM cannot be read from or written to
cache memory.