Foxconn BLACKOPS User Manual page 39

► Gate A20 Option
This feature determines how Gate A20 is used to address memory above 1MB. When this
option is set to Fast, the motherboard chipset controls the operation of Gate A20. But when
set to Normal, a pin in the keyboard controller controls Gate A20. Setting Gate A20 to Fast
improves memory access speed and thus, overall system speed, especially with OS/2 and
Windows. This is because OS/2 and Windows enter and leave protected mode via the BIOS
a lot so Gate A20 needs to switch often from enabled to disabled and back again. Setting this
feature to Fast improves memory access performance above 1MB because the chipset is
much faster in switching Gate A20 than the keyboard controller. It is recommended that you
set it to Fast for faster memory accesses.
► Security Option
When it is set to "Setup", a password is required to enter the CMOS Setup screen; When it
is set to "System", a password is required not only to enter CMOS Setup, but also to start up
your PC.
► APIC Mode (Advanced Programmable Interrupt Controller)
This item is used to enable or disable APIC function.
APIC interrupt subsystems can have as many IRQs as are required in a specific machine.
APICs are beneficial for the following reasons :
• APICs can contribute to resolving resource conflicts in the PC platform.
• Windows operating systems have been designed with APICs in mind.
• APICs are necessary for enabling new features in the PCI specification.
► MPS Version Control for OS
This feature is only applicable to multiprocessor motherboards as it specifies the version of the
MPS that the motherboard will use. The MPS is a specification by which PC manufacturers
design and build Intel architecture systems with two or more processors. MPS 1.1 was the
original specification. MPS version 1.4 adds extended configuration tables for improved
support of multiple PCI bus configurations and greater expandability in the future. In addition,
MPS 1.4 introduces support for a secondary PCI bus without requiring a PCI bridge.
If your operating system comes with support for MPS 1.4, you should keep the setting as
the default 1.4. You also need to enable MPS 1.4 support if you need to make use of the
secondary PCI bus on a motherboard that doesn't come with a PCI bridge.
You should only leave it as 1.1 only if you are running an older operating system that only
supports MPS 1.1.
► OS Select for DRAM>64MB
This item is only required if you have installed more that 64MB of memory and you are running
the OS/2 operating system.
► Delay For HDD (Secs)
This item allows you to select the delay for detecting ATA/ATAPI devices while booting. Time
out value: 0~15s.
► Full Screen Logo Show
This item allows you to enable or disable full screen logo show.
► Small Logo(EPA) Show
This item allows you to enable or disable the EPA logo.
► Summary Screen Show
This item allows you to enable or disable the summary screen show.
(Multi-Processor Specification)
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