MSI 865P Neo Manual page 58

MS-6742 ATX Mainboard
APIC ACPI SCI IRQ
This field is used to enable or disable the APIC (Advanced Programmable
Interrupt Controller). Due to compliance to PC2001 design guide, the system is
able to run in APIC mode. Enabling APIC mode will expand available IRQs
resources for the system. Settings: Enabled and Disabled.
CPU L1 & L2 Cache
Cache memory is additional memory that is much faster than conventional
DRAM (system memory). When the CPU requests data, the system transfers
the requested data from the main DRAM into cache memory, for even faster
access by the CPU. The setting controls the internal cache (also known as L1
or level 1 cache). Setting to WriteBack will speed up the system performance.
System BIOS Cacheable
Selecting Enabled allows caching of the system BIOS ROM at F0000h-FFFFFh,
resulting in better system performance. However, if any program writes to this
memory area, a system error may result. Setting options: Enabled, Disabled.
C000, 32k Shadow
This item specifies how the contents of the adapter ROM named in the item are
handled. Settings are described below:
Option
Disabled
Enabled
Cached
Flash Protection
This function protects the BIOS from accidental corruption by unauthorized
users or computer viruses. When enabled, the BIOS' data cannot be changed
when attempting to update the BIOS with a Flash utility. To successfully update
the BIOS, you'll need to disable this Flash BIOS Protection function.
You should enable this function at all times. The only time when you need to
disable it is when you want to update the BIOS. After updating the BIOS, you
should immediately re-enable it to protect it against viruses. Setting options:
Disabled, Enabled.
3-12
Description
The specified ROM is not copied to RAM.
The contents of specified ROM are copied to RAM
for faster system performance.
The contents of specified ROM are not only copied
to RAM, the contents of the ROM area can be writ-
ten to and read from cache memory.