BCM QS750, Руководство пользователя

Страница: 38 / 50

38
4. BIOS Setup
4.4.11 Boot Up NumLock Status
Toggle between On or off to control the state of the NumLock key when the system boots.
When toggled on , the numeric keypad generates numbers instead of controlling cursor
operations.
4.4.12 Gate A20 Option
This entry allows you to select how the gate A20 is handled. The gate A20 is a device used
to address memory above 1 Megabytes. Initially, the gate A20 was handled via a pin on the
keyboard. Today, while keyboards still support this function, it is more common and much
faster that the system chipset supports.
4.4.13 Typematic Rate Setting
When Disabled , the following two items (Typematic Rate and Typematic Delay) are
irrelevant. Keystrokes repeat at a rate determined by the keyboard controller in your system.
When
Enabled , you can select a typematic a\rate and typematic delay.
4.4.14 Typematic Rate (Chars/Sec)
When the typematic rate setting is enabled, you can select a typematic rate (the rate at which
character repeats when you hold down a key) of 6,8,10,12,15,20,24, or 30 characters per
second.
4.4.15 Typematic Delay (Msec)
When the typematic rate setting is enabled, you can select a typematic delay (the delay
before keystrokes begin to repeat) of 250, 500, 750 or 1000 milliseconds.
4.4.16 Security Option
If you have set a password, select whether the password is required every time the System
boots, or only when you enter Setup.
4.4.17 OS Select for DRAM>64MB
Select OS2 only if you are running OS/2 operating system with greater than 64MB of RAM
on your system.
4.4.18 Shadow
Software that resides in a read-only memory (ROM) chip on a device is called firmware . The
Award BIOS permits shadowing of firmware such as the system BIOS, video BIOS, and
similar operating instructions that come with some expansion peripherals, such as, for
example, a SCSI adaptor.