Air 486SH, Руководство пользователя, Страница: 23 / 39

· Keyboard
(Installed / Not Installed): Default is "Installed". "Not
Installed" allows your system to operate without keyboard.
After all selections have been done, press <
Esc
> key to exit this section.
ADVANCED CMOS SETUP
"ADVANCED CMOS SETUP" lists some system features that allows you
to fine tune your system setup.
· Typematic Rate Programming
: Choose Enabled or Disabled. Enable
this option to adjust the keystroke repeat rate. Adjust the rate via
Typematic Rate Delay and Typematic Rate.
· Typematic Rate Delay
: Choose the delay between holding down a
key and when the character begins repeating. Default is
500milliseconds.
· Typematic Rate
: Choose the rate a character keeps repeating.
Default is 15 characters per second.
· Above 1MB Memory Test
: Default is "Disabled" to speed up power-on
initialization process and the BIOS will only test the extended
memory every 32K locations only to determine the on-board memory
size.
· Memory Test Tick Sound
: Default is "Enabled" for the ticking sound
during memory test.
· Memory Parity Error Check
: Default is "Enabled" to test for
transmission errors in data read from memory.
· Hard Disk Type 47 RAM Area
: The BIOS uses this area to store
extended information, such as user definable drive type 47.
There are two options:
Default option is
0:300
in lower system RAM
DOS 1KB
in the top 1KB of the 640KB DOS base memory
· System Boot Up NumLock
: When the computer boots, it selects the
numeric values rather than the cursor control functions on the
numeric keypad of IBM compatible keyboards. Most extended
486SH System Board User's Manual Page 23