Software Functional Overview 3-9
System Status LED (Main system side)
Indicator
Function Description
IDE LED
Turns on while accessing the HDD
Device Bay LED
Turns on while accessing the FDD
Caps Lock LED
Turns on when CapsLock is active
Scroll Lock LED
Turns on when Scroll Lock is active
Num Lock LED
Turns on when NumLock is active
Customer ID Support
It is required for the BIOS to include the machine ID at location FFF40h, and
twelve bytes at location FFF42h for storing the BIOS version number in ASCII.
Twelve bytes consist of three parts of this version, i.e. System BIOS (jjjj), Video
BIOS (kkkk) and PIC (llll). This version displays on the screen as jjjj-kkkk-llll.
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Machine ID: FFF40h...FFF41h
43h, 4Dh (for Tillamook)
43h, 4Eh (for Pentium-II)
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BIOS version: FFF42h...FFF4Dh = jjjjkkkkllll
(BIOS-VGA-PIC version in ASCII)
The Machine ID and BIOS version is in shadow RAM. (Not in ROM)
Hot Keys Definition
All hot keys must be active at all times under all operating systems.
Hot Keys by Internal Keyboard
Hot Key
Function
Handler
Fn + F3
Toggle Display
(LCD/CRT/Simul)
BIOS Handler
Fn + F4
Stand By
BIOS Handler
Fn + F5
Display Stretch
BIOS Handler
Fn + F6
System Speaker On/Off
BIOS Handler
Fn + F7
Power Management Level*
BIOS Handler
Fn + F8
Brightness Increase
Controlled by M38867
Fn + F9
Brightness Decrease
Controlled by M38867
Fn + F10
Contrast Increase
Controlled by M38867
Fn + F11
Contrast Decrease
Controlled by M38867
Fn + Suspend Button
Save to Disk
BIOS Handler