Chapter 1 
Setting options: On, Off. 
Gate A20 Option 
This item is to set the Gate A20 status. A20 refers to the first 64KB of extended 
memory. When Fast is selected, the Gate A20 is controlled by Port92 or chipset 
specific method resulting in faster system performance. When Normal is 
selected, A20 is controlled by a keyboard controller or chipset hardware. 
Typematic Rate Setting 
This item is used to enable or disable the typematic rate setting including 
Typematic Rate & Typematic Delay. 
Typematic Rate (Chars/Sec) 
After Typematic Rate Setting is enabled, this item allows you to set the rate 
(characters/second) at which the keys are accelerated. Settings: 6, 8,10, 
12,15, 20, 24, 30. 
Typematic Delay (Msec) 
This item allows you to select the delay between when the key was first 
pressed and when the acceleration begins. Settings: 250, 500, 750,1000. 
Security Option 
This specifies the type of BIOS password protection that is implemented. Set-
tings are described below: 
Option 
Description 
Setup 
The password prompt appears only when end users try to 
run Setup. 
System  A password prompt appears every time when the com-
puter is powered on or when end users try to run Setup. 
APICMode 
This field is used to enable or disable the APIC (Advanced Programmable 
Interrupt Controller). Due to compliance to PC2001 design guide, the system 
is able to run in APIC mode. Enabling APIC mode will expand available IRQs 
resources for the system. Settings: Enabled, Disabled. 
MPS Version Control For OS 
This field allows you to select which MPS (Multi-Processor Specification) 
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