IBM A20i 2255, Руководство пользователя

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40 Updating the computer configuration
Boot Up Floppy Seek
This setting determines whether or not the computer will check for the presence of a diskette
drive at startup.
Boot Up NumLock Status
This setting determines the default state of the numeric keypad. By default, the system boots
up with NumLock on.
On The numeric keypad provides numeric functions.
Off The numeric keypad provides arrow-key, Home, PgUp, PgDn, End, Insert, and Delete
functions.
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 Mbytes. Initially, the gate A20 was handled via a pin on the
keyboard. Today, while keyboards still provide this support, it is more common, and much
faster, for the system chipset to provide support for gate A20.
Normal keyboard
Fast
chipset
Typematic Rate Setting
This setting determines whether or not the typematic (repeat) function is enabled. If the
typematic function is enabled and a key is held down, the key will repeat after a brief delay. If
the typematic function is disabled, the key will not repeat when held brief delay. If the
typematic function is disabled, the key will not repeat when held.
Enabled
Enable typematic rate (repeat)
Disabled Disable typematic rate (no repeat)
Typematic Rate (Chars/Sec)
When the typematic rate is enabled, you can select the rate at which the keys are repeated.
Typematic Delay (Msec)
When the typematic rate is enabled, you can select the delay between when the key was first
depressed and when the acceleration begins.
Halt When Error occurence
This option allows system halt when POST error occur. Select "Enabled" system will halt and
"Disabled" system will halt for 5 seconds then POST continue
s
.
Halt On
Use this setting to determine under what conditions the power-on self test (POST) will halt
when errors are detected.
ALL errors
System halts in case of any errors
No errors System won’t halt in case of any errors
ALL, But keyboard System halts except for the keyboard error
ALL, But diskette
System halts except for the diskette error
ALL, But disk/key System halts except for the diskette or keyboard error