Acrosser AR-B1740 - Manual (Page 25)

Advanced Chipset Features
Security Option
Select whether the password is required every time the system boots or only when you
enter setup.
System The system will not boot and access to Setup will be denied if the correct
password is not entered at the prompt.
Setup The system will boot, but access to Setup will be denied if the correct password is
not entered at the prompt.
Note To disable security, select PASSWORD SETTING at Main Menu and then you will be
asked to enter password. Do not type anything and just press <Enter>, it will
disable security. Once the security is disabled, the system will boot and you can
enter Setup freely.
APIC Mode
Setting it to Enabled is to extend the number of IRQ.
OS Select For DRAM > 64MB
Select the operating system that is running with greater than 64MB of RAM on the system. The
choice: Non-OS2, OS2.
Small Logo(EPA) Show
[Enabled]: If you want to show your logo, please enable it.
[Disabled]: When this item disabled, logo(EPA) will not show on screen.
DRAM Timing Selectable
When synchronous DRAM is installed, the number of clock cycles of CAS latency depends
on DRAM timing.
The choices: By SPD (default), Manual
CAS Latency Time
When synchronous DRAM is installed, the number of clock cycles of CAS latency depends
on the DRAM timing. Do not reset this field from the default value specified by the system
designer.
Active to Precharge Delay
Delay that results when two different rows in a memory chip are addressed one after
another.
DRAM RAS# to CAS# Delay
When RAS is asserted, there must be a small wait before the CAS can be pulled. This setting
controls length of the wait. Like CAS latency, it's a delay before you get your data, so while
your system is faster at a lower setting, it's also more stressful at that setting. Your RAM
may handle it, or it may not.
AR-B1740 User's Manual 2 5