440E/LX AT
MAINBOARD
HARDWARE SETUP
3-1
3.
HARDWARE SETUP
Before you can start to install this mainboard, some hardware settings is required to
make sure it will work perfectly with the component which you are going to install in
your PC system. To configure this mainboard is a simple task, only a few jumpers,
connectors, cables and sockets needs to be selected and configured. (For the detailed
locations of each component please refer to page 1-2 “ mainboard layout” )
3.1
INSTALLING THE DRAM MODULES
This mainboard supports 168-pin DIMM sockets, each DIMM can be single-bank or
double-bank It supports two types of DRAM memory and they are either the Extended
Data Out (EDO) or Synchronous (SDRAM) memory. (Both Symmetrical and
Asymmetrical DRAM addressing are supported.) Please note the DIMM modules
suggested on the mainboard must be 3.3V, un-buffered and DRAMs‘ speed must be
either 60ns or 50ns,.
This mainboard has the new technology called SPD (Serial Presence Detect) designed
in the DRAM subsystem. SPD will be available in the future and it is designed to make
system more stabile and compatible. If the DIMM module with this technology is
populated on the mainboard, the system BIOS will gather some information (such as
DRAM type, size, access timing ... etc.) stored in the DIMM module and then BIOS
will determine what operating parameters will be used for the individual populated
DIMM module automatically.
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DIMM 1 ( BANK1+ BANK2 )
DIMM 2 ( BANK2 + BANK3 )
DRAM Subsystem Diagram
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