Advanced Chipset Features - Delta Components Fanless Box PC 31xx series Manual

CPU L1, L2 and L3 Cache
Cache memory is an additional memory that is much faster than conventional DRAM (system
memory). This BIOS feature is used to enable or disable the processor's Level 1, Level 2 and
Level 3 cache. Naturally, the default and recommended setting is Enabled.
Note: This field will be available only if your CPU supports this function.
First/Second/Third Boot Device
BIOS attempts to load the operating system from the devices in the sequence selected. The
available choices are: Floppy, HDD-0, SCSI, CDROM, HDD-1, HDD-2, HDD-3, USB-FDD,
USBZIP, USB-CDROM, USB-HDD, LAN, and Disabled.
Boot Up NumLock Status
Toggle between On or Off to control the state of the NumLock key when the system boot. If
On, the numeric keypad is in numeric mode. If Off, the numeric keypad is in cursor control
mode.
Gate A20 Option
Gate A20 refers to the way the system addresses memory above 1MB (extended memory).
This feature enables you to select whether the chipset or the keyboard controller should
control Gate A20. The options are:
♦ Normal: A pin in the keyboard controller controls Gate A20
♦ Fast : Let system chipsets control Gate A20. The fast setting improves system speed,
particularly with OS/2 and windows.
Security Option
Enables you to select whether the password is required every time the system boots or only
when you enter Setup.
♦ System: The system will not boot and access to Setup will be denied if the correct
password is not entered at the prompt.
♦ Setup: The system will boot, but access to Setup will be denied if the correct password
is not entered at setup.

4.9 Advanced Chipset Features

Since the features in this section are related to the chipset in the CPU board and all are
optimized, you are not recommended to change the default settings in the setup table, unless
you understand the chipset features.
This section allows you to configure the system based on the specific features of the installed
chipset. This chipset manage bus speeds and access to system memory resources, such as
DRAM and the external cache. It also coordinates communications between the conventional
ISA bus and the PCI bus. The default settings have been chosen because they provide the best
operating conditions for your system. The only time you might consider making any changes
would be if you discovered that data was being lost while using your system.
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