CHAPTER 4
AMI
®
BIOS USERS GUIDE
4-8
CPU Serial Number
This option is for Pentium III processor. During Enabled, this will
check the CPU Serial number. Disabled this option if you don’t want the
system to know the Serial number.
Cache Bus ECC
This option is for Pentium
®
II processor. During Enabled, this will
affect the system performance. Disabled this option if you don’t want to
affect the system performance.
System BIOS Cacheable
AMI
®
BIOS always copies the system BIOS from ROM to RAM for
faster execution. Set this option to Enabled to permit the contents of the
F0000h RAM memory segment to be written to and read from cache memory.
The settings are Enabled or Disabled. The Optimal default setting is Ena-
bled. The Fail-Safe default setting is Disabled.
C000, 64K Shadow
These options specify how the contents of the video ROM are
handled. The settings are:
Disabled - the Video ROM is not copied to RAM.
Cached - the contents of the video ROM from C0000h - C7FFFh are
not only copied from ROM to RAM; it can also be written
to or read from cache memory.
Shadow - the Contents of the video ROM from C0000h - C7FFFh are
copied(shadowed) from ROM to RAM for faster execution.
The Optimal and Fail-Safe default setting is Cached.
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