AOpen AX6L User Manual

Chapter 1
Overview
The AX6L is a new generation Pentium II based system board that utilizes Intel
82440LX chipset on ATX PCI/ISA platform. This chipset is designed for
Pentium II CPU, and supports new architectures such as high speed AGP
graphic port, SDRAM, Ultra DMA/33, Bus master IDE and USB port. It has
four Dual in-line Memory Module (DIMM) that allow to mix 3V EDO and
SDRAM memory and expand up to a maximum of 1GB. There is no second
level cache onboard, since the cache is on the Pentium II CPU card
(connector SLOT1). Also, AX6L uses 2M bit Flash ROM BIOS to reserve for
future new functions.
Not only above features, AX6L implements most advanced technology such as
user-friendly Jumper-less configuration, CMOS and RTC battery-less backup,
Synchronous switching regulator, CPU thermal protection, CPU fan
monitoring, System voltage monitoring, Over current protection, Modem Wake
Up and Suspend to Hard Drive.
Jumper-less Design
Pentium II VID signal and SMbus clock generator provide CPU voltage auto-
detection and allows user to set CPU frequency through CMOS setup, no
jumper or switch is needed. The correct CPU information is saved into
EEPROM, with these technologies, the disadvantages of Pentium base
jumper-less design are eliminated. There will be no worry of wrong CPU
voltage detection and no need to re-open the housing if CMOS battery loss.
The only jumper left is to clear CMOS, which is a safety hook if you forget the
password.
Battery-less Motherboard
AX6L implements EEPROM and special circuit (patent applied) that allows you
to save your current CPU and CMOS Setup configurations without the need of
battery. The RTC (real time clock) can also keep running as long as power
cord is plugged. If you lose your CMOS data by accident, you can just reload
the CMOS configurations from EEPROM and the system will recover as usual.
1-1