CHAPTER 1 INTRODUCTION
Chapter 1
INTRODUCTION
The A TX BX2 mainboard is a high-performance dual-processor personal
computer mainboard based on the Intel® Pentium® II processor. The Intel
®
Pentium® II processor supports MMXTM(Multimedia Extension) technology .
The mainboard uses the highly integrated Intel® 82440BX chipset to support
the PCI/ISA and Green standards, and to provide the Host/AGP bridge. The
82371EB chipset integrates all system control functions such as ACPI
(Advanced Configuration and Power Interface). The ACPI provides more
Energy Saving Features for the OSPM(OS Direct Power Management)
function. The Intel® 82371EB chipset also improves the IDE transfer rate by
supporting Ultra DMA/33 IDE that transfers data at the rate of 33MB/s.
The mainboard also supports the System Hardware Monitor Controller as an
optional function. This function includes: CPU /power supply/chassis fan
revolution detect, CPU/system voltage monitor, system temperature monitor ,
and chassis intrusion detect(optional).
1-1
CHAPTER 1 INTRODUCTION
1.1 Mainboard Features
CPU
l T wo Slot 1 for Intel
l Supports FSB 66MHz for 233MHz, 266MHz, 300MHz, 333MHz and higher .
®
Pentium® II processor.
FSB 100MHz for 350MHz, 400MHz, 450MHz, 500MHz and higher
Chipset
®
l Intel
82440BX AGP chipset.
Clock Generator
l 66.6MHz/100MHz clocks are supported.
Main Memory
l Supports eight memory banks using four 168-pin unbuffered DIMM
sockets.
l Supports a maximum memory size of 1GB for Registered SDRAM and
512MB for Unbuffered SDRAM.
l Supports ECC(1- bit Error Code Correct) and EC(Multiple-Bit Error Detect)
function.
Slots
l One AGP(Accelerated Graphics Port) slot.
- AGP specification compliant
- AGP 66/133MHz 3.3v device support
l Five 32-bit PCI Bus slots (provides four PCI Master slots and one PCI
Slave slot) and two 16-bit ISA bus slots (one shared slot)
l Supports 3.3v/5v PCI bus Interface.
On-Board IDE
l An IDE controller on the Intel
®
82371EB PCI Chipset provides IDE HDD/
CD-ROM with PIO, Bus Master and Ultra DMA/33 operation modes.
l Can connect up to four IDE devices.
1-2
CHAPTER 1 INTRODUCTION
On-Board Dual Channel Ultra Wide SCSI
l Adaptec
®
7895 Dual Channel Ultra Wide chipset.
On-Board Peripherals
l On-Board Peripherals include:
- 1 floppy port supports 2 FDD with 360K, 720K, 1.2M, 1.44M and
2.88Mbytes.
- 2 serial ports (COMA + COMB) or 1 serial port and 1 IrDA port.
- 1 parallel port supports SPP/EPP/ECP mode
- 2 USB ports
Switching V oltage Regulator
l On-board switching mode DC-DC Step Down Regulator.
l Conforms to Intel VRM ver 8.1 specifications.
l Over-Voltage and Over-Current protection.
BIOS
l The mainboard BIOS provides “Plug & Play” BIOS which detects the
peripheral devices and expansion cards of the board automatically .
l The mainboard provides a Desktop Management Interface(DMI) function
which records your mainboard specifications.
Dimension
l ATX form factor: 30cm(L) x 25cm(W) x 6 layers PCB
Mounting
l 9 mounting holes.
System Hardware Monitor (optional)
l CPU/Power Supply/Chassis Fan Revolution Detect
l CPU Fan Control (the fan will automatically stop when the system enters
suspend mode)
l System Voltage Detect
l CPU Overheat W arning.
l Display Actual Current Voltage
1-3
CHAPTER 1 INTRODUCTION
1.2 Mainboard Layout
PSFAN1
AGP
CFAN2
SLOT 1
JSOR2
JDSCSI
1
3
BATT
FW82443BX
4
JSOUND
6
JWOL1
+
Adaptec
7895
1
JBAT1
JIPWR
JGL1
DIMM 1
JGS1
DIMM 2
DIMM 3
DIMM 4
IDE2
FW82371EB
16-bit Ultra Wide SCSI CH1
16-bit Ultra Wide SCSI CH2
8-bit Ultra SCSI CH2
CSFAN1
FDC
10
JWLED1
1
JFP1
JRMS1
IDE1
JRMS2
18
9
Top: mouse
Bottom:
keyboard
USB
Top: Port 1
Bottom:
Port 2
Top: LPT
Bottom:
COM A
COM B
6
10
Hardware
SW1
1
5
1
Monitor
I/O
APIC
6
IR1
Power Supply
ATX
JSM1
JMDM1
BIOS
CFAN1
JSOR1
SLOT 1
PCI SLOT 1
PCI SLOT 2
PCI SLOT 3
PCI SLOT 4
PCI SLOT 5
ISA SLOT 1
ISA SLOT 2
MS-6120
1-4
CHAPTER 2 HARDWARE INSTALLATION
Chapter 2
HARDWARE INSTALLATION
2.1 Central Processing Unit: CPU
The mainboard operates with Intel® Pentium® II processor with MMX
technology. The mainboard uses a CPU Slot called Slot 1 for easy CPU
installation and a DIP switch (SW1) to set the proper speed for the CPU.
The CPU should always have a Heat Sink and a cooling fan attached to
prevent overheating.
TM
2-1
CHAPTER 2 HARDWARE INSTALLATION
2.1-1 CPU Installation Procedures
There are two kinds of Pentium® II processor that is currently used: the
OEM Pentium® II processor and the Boxed Pentium® II processor. OEM
Pentium® II processor has no Heat Sink, Fan and Heat Sink Support, while
the Boxed Pentium® II processor is provided with Heat Sink w/ fan and Heat
Sink Support.
A. OEM Pentium
Processor
Lock
Pentium® II
Processor
Heat Sink
Support
Top Bar
Heat Sink
Support Base
®
II processor Installation Procedures
Heat Sink
W/Fan
Heat Sink
Support Pin
Notch Hole
Retention
Mechanism
Required Things:
Pentium® II processor - Processor .
*Retention Mechanism(RM) - Plastic Guide that holds the S.E.C. Catridge
in the Slot 1 connector.
*Retention Mechanism Attach Mount(RMAM) - Bolt/Bridge assemblies
inserted up through the bottom of the
motherboard. RM secures to RMAM ( 2
RMAM required per RM ).
*Heat Sink Support Base (HSSBASE) - Plastic support bar mounted to
the mainboard under the ATX heatsink.
(One leg is always bigger than the other one)
2-2
CHAPTER 2 HARDWARE INSTALLATION
*Heat Sink Support Pin (HSSPIN) - Plastic pins inserted through the
HSSBASE to secure it to the mainboard (2
required per Assembly).
*Heat Sink Support T op Bar (HSSTOP) - Plastic bar that clips onto the
HSSBASE through the fins on the ATX
heatsink.
**Heat Sink w/ fan - Heat Sink that can be attached to the Pentium® II
processor with metal clip.
Note: * Provided by MSI mainboard.
** Provided by Special request.
HSSBASE
RM
HSSPIN
RMAM
HSSTOP
2-3
CHAPTER 2 HARDWARE INSTALLATION
Step 1: Insert the Retention Mechanism Attach Mount at the bottom
of the mainboard.
Step 2: Install the Retention Mechanism.
Look for the key on Slot 1, and match it with the Notch Key on the
Retention Mechanism for proper direction. Then, attach the
Retention Mechanism to the Retention Mechanism Attach Mount.
Use a Screwdriver to secure the Retention Mechanism.
Retention
ê
Notch
Key
Mechanism
ê
Key
SLOT1
êê
Retention
Mechanism
Attach Mount
2-4
CHAPTER 2 HARDWARE INSTALLATION
Step 3: Install the Heat Sink Support Base.
Look for the T wo holes across Slot 1, and match it with the Two legs
of the Heat Sink Support Base for the proper direction. T ake note
that one hole/leg is bigger than the other. The Four top pins of the
Heat Sink Support Base should also be oriented towards Slot 1.
pins
Leg
Heat Sink
Support Base
Heat Sink
Support Pin
Push the Heat Sink Support Base onto the mainboard, until you hear
a click sound. Check for a perfect fit.
Step 4: Install the Heat Sink Support Pin.
Push the Heat Sink Support Pins onto the two holes of the Heat Sink
Support Base. Check for a perfect fit. These pins are used to secure
the Heat Sink Support Base.
2-5
CHAPTER 2 HARDWARE INSTALLATION
Step 5: Install the Heat Sink with Fan to the Processor.
Push down the metal clips, so that they are in line with the back of
the Heat Sink. Be careful, so as not detach the metal clips from the
Heat Sink.
Heat Sink w/ Fan
The arrow
â
should be
Heat Sink
Base Holder
Metal Clips
pointing
down.
In case the metal clips are detached from the Heat Sink, re-attach
them. Look for the arrow on the metal clip. This arrow should be
pointing down and aligned with the Heat Sink Support Base Holder.
Attach the Heat Sink to the processor.
Clip Holder
Secure
holes
Clip Holder
Pentium® II processor (Back)
Heat Sink w/ Fan(Back)
Metal Clips Ear
Secure
Posts
Metal Clips Ear
- Look at the back of the Heat Sink and take note of the 2 secure
posts. Insert these 2 Secure posts to the 2 secure holes on the
back of the processor.
- Align the ears of the metal clips with the clip holders on the back of
the processor. Use a screw driver to push the metal clips onto the
clip holders. Check for a perfect fit.
2-6
CHAPTER 2 HARDWARE INSTALLATION
Step 6: Install the Processor.
Unlock the Processor by pushing in the Processor Locks.
è
Insert the Processor like inserting a PCI or an ISA card.
Step 7: Lock the Processor Locks.
Secure the CPU by pulling the Processor Locks out.
ç
ç
è
2-7
CHAPTER 2 HARDWARE INSTALLATION
Step 8: Install the Heat Sink Support T op Bar .
Push the Heat Sink Support Top Bar to the Heat Sink Support Base,
Until you hear a “click” sound. Check for a perfect fit.
Heatsink
Support Top
Bar
The installation is now complete.
2-8
CHAPTER 2 HARDWARE INSTALLATION
B. Boxed Pentium® II processor Installation Procedures
The Boxed Pentium® II processor has a built- in Fan and Heat Sink. It also
has a Heat Sink Support. So if you’re going to use the Boxed processor, all
you need is the Retention Mechanism.
Step 1: Insert the Retention Mechanism Attach Mount at the bottom
of the mainboard.
Step 2: Install the Retention Mechanism.
Look for the key on Slot 1, and match it with the Notch Key on the
Retention Mechanism for proper direction. Then, attach the
Retention Mechanism to the Retention Mechanism Attach Mount.
Use a Screwdriver to secure the Retention Mechanism.
Retention
ê
Mechanism
ê
Notch
Key
Key
SLOT1
êê
Retention
Mechanism
Attach Mount
2-9
CHAPTER 2 HARDWARE INSTALLATION
Step 3: Install the Heat Sink Support Base.
Look for the 2 holes across Slot 1, and match it with the 2 Heat Sink
Support Base. Take note that one hole/base is bigger than the other.
Retention
Mechanism
Notch
Hole
PC-3742
Heat Sink
Support Base
Push the Heat Sink Support Base onto the mainboard, until you hear
a click sound. Check for a perfect fit.
2-10
CHAPTER 2 HARDWARE INSTALLATION
Step 4: Install the Heat Sink Support.
Attach the 2 Heat Sink Supports to the sides of the Processor. These
Heat Sink Supports will fit in any direction, so be sure that the Heat
Sink Support Locks are oriented outwards for the proper direction.
Intel® Boxed
PentiumTM II
Processor
Heat Sink
Support
Heat Sink
Support Lock
PC-3743
2-11
CHAPTER 2 HARDWARE INSTALLATION
Step 5: Unlock the Processor Locks and Heat Sink Support Locks.
Push in the Processor Locks. Open the Heat Sink Support Locks.
Processor
Lock
Heatsink
Support
Lock
Step 6: Insert the Processor like inserting a PCI or an ISA card.
2-12
PC-3744
CHAPTER 2 HARDWARE INSTALLATION
PC-3745
Step 7: Lock the Processor Locks and Heat Sink Support Locks
Secure the CPU by pushing out the Processor Locks. Close the Heat
Sink Support Locks.
The installation is now complete.
2-13
CHAPTER 2 HARDWARE INSTALLATION
2.1-2 CPU Speed Setting: SW1
To adjust the speed of the CPU, you must know the specifications of your
CPU (always ask the vendor for CPU spec.). Then look at T able 2.1 (200 ~
333MHz/300 ~ 500MHz Intel® Pentium® II processor) for setting.
SW1
ON DIP
ON
OFF
1 2 3 4 5 6
Speed Setting
Table 2.1 200 ~ 333MHz/300 ~ 500MHz Intel® Pentium® II processor
CPU SPEED
CORE/BUS RATIO
(FSB 66/100MHz)
200/300MHz
233/350MHz
266/400MHz
300/450MHz
333/500MHz
Note: Switch 5 and 6 by default are off.
ON
1 2 3 4
ON DIP
1 2 3 4
ON DIP
1 2 3 4
ON DIP
1 2 3 4
ON DIP
1 2 3 4
2-14
SW1
DIP
ON
(i.e. x 3)
OFF
ON
(i.e. x 3.5)
OFF
ON
(i.e. x 4)
OFF
ON
(i.e. x 4.5)
OFF
ON
(i.e. x 5)
OFF
CHAPTER 2 HARDWARE INSTALLATION
Note: If user set pin 5 of SW1to “ON”, then the motherboard can set
the 66.6MHz CPU to 100MHz FSB. Divide the CPU speed by the FSB
frequency and get the closest core/ bus ratio then set pins 1 to 4 of
SW1. Though the motherboard provides this function, it is not
recommended because it might cause instability , or unable to power
on. Long term usage may shorten the lifespan of the CPU. Thus, we
strongly discourage the use of this function except for testing
purposes. If this function is used and creates damage, the user will
take whole responsibility.
2.1-3 CPU Terminator
The CPU terminator is used, when only one CPU is installed. Y ou must
always install the CPU terminator on the empty slot. For Example: If you
install the CPU on the 1st slot, then you must install the CPU terminator on
the 2nd slot or vice versa.
CPU T erminator
Important:
T o use dual CPU, it is strongly adviced that same CPU speed and
CPU stepping is used: which means that if you install 233MHz in the
1st CPU slot, then you must also install 233MHz on the 2nd slot.
2-15
CHAPTER 2 HARDWARE INSTALLATION
2.1-4 Fan Power Connectors: CFAN1/CFAN2/CSFAN1/
PSFAN1
These connectors support system cooling fan with +12V. It supports three
pin head connector. When connecting the wire to the connector, always
take note that the red wire is the positive and should be connected to the
+12V, the black wire is Ground and should be connected to GND. If your
mainboard has System Hardware Monitor chipset on-board, you must use a
specially designed fan with speed sensor to take advantage of the CPU fan
speed monitor feature.
SENSOR
+12V
GND
GND
+12V
SENSOR
PSFAN1
SENSOR
+12V
GND
SENSOR
CFAN2
+12V
CSFAN1
GND
CFAN1
CFAN1 : processor fan
CFAN2 : processor fan
PSFAN1 : power supply fan
CSFAN1 : system fan
Note: There are four fan connectors provided by this mainboard. But the
System Hardware Monitor can only monitor up to three fans, so the
PSFAN1 is not supported. For fans with speed sensor, every rotation
of the fan will send out 2 pulses. System Hardware monitor will count
and report the fan rotation speed.
2-16
CHAPTER 2 HARDWARE INSTALLATION
2.2 Clear CMOS Jumper: JBAT1
A battery must be used to retain the mainboard configuration in CMOS
RAM. Y ou must short 1-2 pins of JBAT1 to keep the CMOS data.
1
3
JBAT1
JBAT1
1
3
1
3
Function
Keep Data
Clear Data
Note: Y ou can clear CMOS by shorting 2-3 pin, while the system is of f.
Then, return to 1-2 pin position. T o be able to clear the CMOS, you
need to unplug the power plug of the system, because there’s a 3V
standby power for PIIX4E chipset which is provided by the power
supply. Otherwise, the CMOS will not be cleared.
2-17
CHAPTER 2 HARDWARE INSTALLATION
2.3 Power On Mode Jumper: JIPWR
The mainboard supports two kinds of system boot up: the Boot-Up by
switch and the Immediate Boot-Up. With the Boot-Up by Switch, the system
will boot up only when the power on switch is pressed. For Immediate BootUp, the system will boot up instantly when the power connector is
connected into the system.
JIPWR
A. Factory Default Setting for JIPWR is “short” (Boot-Up by
Switch)
- Power Management Enabled: During Power On, press the power
button switch and the system goes into suspend mode. Press it
more than four seconds and the system will power off.
- Power Management Disabled: During Power On, press the power
switch button and the system will power off.
B. Immediate Boot-Up
The system will boot up instantly when the power connector is
connected into the system.
2-18
CHAPTER 2 HARDWARE INSTALLATION
Table 2.3: Power On Mode Feature
JIPWR
Feature
Select Boot-Up by Swtich
Select Immediate Boot-Up
Note: Short JIPWR, when using Boot-Up by Switch feature. Open JIPWR,
to enable Immediate Boot-Up.
2-19
CHAPTER 2 HARDWARE INSTALLATION
2.4 Memory Installation
2.4-1 Memory Bank Configuration
The mainboard supports a maximum of 1 GB memory for registered DIMM
and 512MB for unbuffered DIMM: It provides four 168-pin DIMMs
(Double In-Line Memory Module) sockets. It supports 8 MB to 256 Mbytes
DIMM memory module.
DIMM2(Bank2 + Bank3)
DIMM1(Bank0 + Bank1)
DIMM4(Bank6 + Bank7)
DIMM3(Bank4 + Bank5)
!
WARNING!
There are two kinds of DIMM specification supported
by this mainboard: PC100 and PC66. If you use
66MHz CPU Bus Frequency, these two DIMM Specs. is
supported. If you use 100 MHz CPU Bus Frequency,
only PC100 DIMM Specs. is supported.
2-20
CHAPTER 2 HARDWARE INSTALLATION
2.4-2 Memory Installation Procedures
A. How to install a DIMM Module
Single Sided DIMM
Double Sided DIMM
1. The DIMM slot has a two Notch Key “VOL T and DRAM”, so the
DIMM memory module can only fit in one direction.
2. Insert the DIMM memory module vertically into the DIMM slot.
Then push it in.
VOLTDRAM
3. The plastic clip at the side of the DIMM slot will automatically
close.
2-21
CHAPTER 2 HARDWARE INSTALLATION
2.4-2 Memory Population Rules
1 . Supports SDRAM.
2. Supports registered/unbuffered DIMM.
3 . To operate properly, at least one 168-pin DIMM module must be in-
stalled.
4. This mainboard supports Table Free memory, so memory can be installed
on DIMM1, DIMM2, DIMM 3, or DIMM 4 in any order.
5. Supports only 3.3 volt DIMM.
6. The DRAM addressing and the size supported by the mainboard is
shown below:
T able 2.4-1 SDRAM Memory Addressing
DRAM
Tech.
16M 1Mx16 ASYM 12 8 8MB x 4 16MBx8
64M 2Mx32 ASYM 12 9 16MBx2 32MBx4
2 bank 2Mx32 ASYM 13 8 16MBx2 32MBx4
64M 2Mx32 ASYM 13 8 16MBx2 32MBx4
4 bank 4Mx16 ASYM 14 8 32MBx4 64MBx8
DRAM
Density &
Width
2Mx8 ASYM 12 9 16MBx8 32MBx16
2Mx8 ASYM 13 8 16MBx8 32MBx16
4Mx4 ASYM 12 10 32MBx16 64MBx32
4Mx4 ASYM 14 8 32MBx16 64MBx32
4Mx16 ASYM 12 10 32MBx4 64MBx8
4Mx16 ASYM 14 8 32MBx4 64MBx8
8Mx8 ASYM 14 9 64MBx8 128MBx16
16Mx4 ASYM 14 10 128MBx16 256MBx32
8Mx8 ASYM 14 9 64MBx8 128MBx16
16Mx4 ASYM 14 10 128MBx16 256MBx32
DRAM
Addressing
Address Size
Row
Column
Single
Side(S)
MB/DIMM
no.
Double
pcs.
Side(D)
no.
pcs.
2-22
CHAPTER 2 HARDWARE INSTALLATION
2.5 Case Connector: JFP1
The Power Switch, Reset Switch, Key Lock, Power LED, Speaker and HDD
LED are all connected to the JFP1 connector block.
Keylock
10
1
2-23
HDD
LED
+
Speaker
14
Power
LED
JFP1
15
+
Power
Switch
Reset
Switch
9
18
CHAPTER 2 HARDWARE INSTALLATION
2.5-1 Power Switch
Connect to a 2-pin push button switch. This switch had the same feature
with JRMS1.
2.5-2 Reset Switch
Reset switch is used to reboot the system rather than turning the power ON/
OFF . A void rebooting while the HDD LED is lit. You can connect the Reset
switch from the system case to this pin.
2.5-3 Keylock
Keylock allows you to disable the keyboard for security purposes. You can
connect the keylock to this pin.
2.5-4 Power LED
The Power LED is always lit while the system power is on. Y ou can connect
the Power LED from the system case to this pin.
2.5-6 Speaker
Speaker from the system case is connected to this pin.
If on-board speaker is available:
Short pin 14-15: On-board speaker Enabled.
Open pin 14-15: On-board speaker Disabled.
2.5-7 HDD LED
HDD LED shows the activity of a hard disk drive. A void turning the power
off while the HDD led is lit. Y ou can connect the HDD LED from the system
case to this pin.
2-24
CHAPTER 2 HARDWARE INSTALLATION
2.6 Floppy Disk Connector: FDC
The mainboard also provides a standard floppy disk connector FDC that
supports 360K, 720K, 1.2M, 1.44M and 2.88M floppy disk types. This
connector support the provided floppy drive ribbon cables.
1
FDC
2-25
CHAPTER 2 HARDWARE INSTALLATION
2.7 Hard Disk Connectors: IDE1 & IDE2
The mainboard has a 32-bit Enhanced PCI IDE Controller that provides PIO
mode 0~4, Bus Master, and Ultra DMA/33 function. It has two HDD connectors IDE1 (primary) and IDE2 (secondary). Y ou can connect up to four hard
disk drives, CD-ROM, 120MB Floppy and other devices to IDE1 and IDE2.
These connectors support the provided IDE hard disk cable.
Secondary IDE Connector
Primary IDE Connector
1
1
IDE1(Primary IDE Connector)
The first hard drive should always be connected to IDE1. IDE1 can
connect a Master and a Slave drive. You must configure second hard
drive to Slave mode by setting the jumper accordingly .
IDE2(Secondary IDE Connector)
IDE2 can also connect a Master and a Slave drive.
2-26
CHAPTER 2 HARDWARE INSTALLATION
2.8 Power Supply
2.8-1 ATX 20-pin Power Connector: JPWR1
This connector supports the power button on-board. Using the ATX power
supply, functions such as Modem Ring Wake-Up and Soft Power Off are
supported by this mainboard.
1
11
ATX
Power Connector
20 10
PIN DEFINITION
PIN SIGNAL
1 3.3V
2 3.3V
3 GND
45V
5 GND
65V
7 GND
8 PW_OK
9 5V_SB
10 12V
Warning: Since the mainboard has the instant power on function, make
sure that all components are installed properly before inserting the power
connector to ensure that no damage will be done.
PIN SIGNAL
11 3.3V
12 -12V
13 GND
14 PS_ON
15 GND
16 GND
17 GND
18 -5V
19 5V
20 5V
2-27
CHAPTER 2 HARDWARE INSTALLATION
2.8-2 Remote Power On/Off Switches: JRMS1/JRMS2
Connect to a 2-pin push button switch. If Instant-on is Enabled, every time
the switch is shorted by pushing it once, the power supply will change its
status from OFF to ON. If Instant-on is Disabled: During ON stage, push
once and the system goes to sleep mode: pushing it more than 4 seconds
will change its status from ON to OFF. If you want to change the setup,
you could go to the BIOS Power Management Setup.
JRMS1
JRMS2
Note: The two switches are provided by the mainboard for your
convenience, so you can use any of them. The two switches have
the same function.
2-28
CHAPTER 2 HARDWARE INSTALLATION
2.9 IrDA Infrared Module Connector: IR1
The mainboard provides two 5-pin infrared (IR) connectors for IR modules.
These connectors are for optional wireless transmitting and receiving
infrared module. You must configure the setting through the BIOS setup to
use the IR function. FIR and Consumer IR are reserved functions for future
Super I/O chipset.
6
NC
NC
NC
CIRRX
NC
10
5
IRTX
GND
IRRX
NC
VCC
1
Note: Future Super I/O (w893977A TF) chip will provide FIR & Consumer
I/O. The IrDA connector support future feature, but it has not yet
been tested.
2-29
CHAPTER 2 HARDWARE INSTALLATION
2.10 Serial Port Connectors: COM A & COM B
The mainboard has two 9-pin male DIN connectors for serial ports COM A
and COM B. These two ports are 16550A high speed communication ports
that send/receive 16 bytes FIFOs. You can attach a mouse or a modem cable
directly into these connectors.
1 2 3 4 5
6 7 8 9
COM A
PIN DEFINITION
COM B
PIN SIGNAL
1 DCD(Data Carry Detect)
2 SIN(Serial In or Receive Data)
3 SOUT(Serial Out or Transmit Data)
4 DTR(Data T erminal Ready)
5 GND
6 DSR(Data Set Ready)
7 RTS(Request T o Send)
8 CTS(Clear T o Send)
9 RI(Ring Indicate)
2-30
CHAPTER 2 HARDWARE INSTALLATION
2.11 Parallel Port Connector: LPT
The mainboard provides a 25 pin female centronic connector for LPT . A
parallel port is a standard printer port that also supports Enhanced Parallel
Port(EPP) and Extended capabilities Parallel Port(ECP). See connector and
pin definition below:
LPT
13 12 11 10 9 8 7 6 5 4 3 2 1
25 24 23 22 21 20 19 18 17 16 15 14
PIN DEFINITION
PIN SIGNAL PIN SIGNAL
1 STROBE 14 AUTO FEED#
2 DAT A0 15 ERR#
3 DATA1 16 INIT#
4 DAT A2 17 SLIN#
5 DATA3 18 GND
6 DATA4 19 GND
7 DATA5 20 GND
8 DATA6 21 GND
9 DATA7 22 GND
10 ACK# 23 G ND
1 1 BUSY 24 G N D
12 PE 25 GND
13 SELECT
2-31
CHAPTER 2 HARDWARE INSTALLATION
2.12 Mouse Connector: JKBMS1
The mainboard provides a standard PS/2® mouse mini DIN connector for
attaching a PS/2® mouse. You can plug a PS/2® mouse directly into this
connector. The connector location and pin definition are shown below:
Pin5
Pin6
NC
Pin4
VCC
Pin2
NC
PS/2® Mouse (6-pin Female)
Mouse Clock
Pin3
GND
Mouse DATA
Pin1
2.13 Keyboard Connector: JKBMS1
The mainboard provides a standard PS/2® keyboard mini DIN connector for
attaching a keyboard. You can plug a keyboard cable directly to this
connector.
PS/2® Keyboard (6-pin Female)
Pin5
KBD Clock
Pin6
NC
Pin4
VCC
Pin2
NC
KBD DATA
Pin1
Pin3
GND
2-32
CHAPTER 2 HARDWARE INSTALLATION
2.14 USB Connector: USB
The mainboard provides a UHCI(Universal Host Controller Interface)
Universal Serial Bus root for attaching USB devices like: keyboard, mouse
and other USB devices. You can plug the USB device directly to this
connector.
USB Port 1
1 2 3 4
USB Port 2
PIN SIGNAL
1 VCC
2 -Data0
3 GND
4 +Data0
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CHAPTER 2 HARDWARE INSTALLATION
2.15 Sleep Switch Connector: JGS1
Attach a power saving switch to JGS1. When the switch is pressed, the
system immediately goes into sleep mode. Press any key and the system
wakes up.
GND
SLEEP#
JGS1
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CHAPTER 2 HARDWARE INSTALLATION
2.16 Sleep LED Connector: JGL1
Connect a 2-pin LED to JGL1. When the system goes into sleep mode, the
LED lights up. It is always lit while the system is in sleep mode.
LED+
LED-
JGL1
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CHAPTER 2 HARDWARE INSTALLATION
2.17 Modem Wake Up Connector: JMDM1
The JMDM1 connector is for used with Modem add-on card that supports
the Modem W ake Up function.
1
JMDM1
5
PIN SIGNAL
1NC
2 GND
3 MDM_WAKEUP
4NC
5 5VSB
Note: Modem wake-up signal is active “low”.
Note: To be able to use this function, you need a power supply that
provide enough power for this feature.
(750 ma power supply with 5V Stand-by)
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CHAPTER 2 HARDWARE INSTALLATION
2.18 Wake-Up on LAN Connector: JWOL1
The JWOL1 connector is for use with LAN add-on cards that supports
W ake Up on LAN function.
1
3
JWOL1
PIN SIGNAL
1 5VSB
2 GND
3 MP_WAKEUP
Note: LAN wake-up signal is active “high”.
Note: To be able to use this function, you need a power supply that
provide enough power for this feature.
(750 ma power supply with 5V Stand-by)
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CHAPTER 2 HARDWARE INSTALLATION
2.19 SB_LinkTM Card Sound Connector: JSOUND
The mainboard provides a distributed DMA connector for PCI sound card
with this feature, such as Creative® PCI 3D sound card.
DMA Grand Signal
GND
NC
1
3
JSOUND
2-38
4
GND
DMA Request Signal
Serial Interrupt Signal
6
CHAPTER 2 HARDWARE INSTALLATION
2.20 CPUs Temperature Sensor: JSOR1/JSOR2
This is used to check the CPU temperature. The JSOR1/JSOR2 is a sensor
that is placed near the processor heatsink. This will monitor the CPU
temperature.
JSOR1
JSOR2
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CHAPTER 2 HARDWARE INSTALLATION
2.21 Two Color Power LED: JWLED1
The JWLED1 is for normal and suspend mode. But this LED produce two
different colors.
LED-
JWLED1
LED+
The use needs to connect a 3-pin 2-color LED. Under different working modes (normal or suspend), the LED will show different
colors. For example if the LED has green and yellow colors, if the
LED shows green color during the normal operation mode, when the
system enters suspend mode, LED color will turn yellow .
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CHAPTER 2 HARDWARE INSTALLATION
2.22 System Manager Jumper: JSM1
The JSM1 is used to select the SMI# source.
3
1
JSM1
JSM1
1
1
Function
3
SMI# source from
I/O APIC (Default)
3
SMI# source from
PIIX4E
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CHAPTER 2 HARDWARE INSTALLATION
2.23 SCSI Connectors
The mainboard provides three SCSI connector.
On-board 16-Bit Ultra Wide SCSI
CH1 connector
On-board 16-Bit Ultra Wide SCSI
CH2 connector
On-board 8-Bit Ultra SCSI
CH2 connector
1
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CHAPTER 2 HARDWARE INSTALLATION
2.24 SCSI Enable/Disable Jumper: JDSCSI
This jumper is used to enable or disable the SCSI chip on-board.
JDSCSI
JDSCSI
Function
Enabled on-board SCSI Controller
Disabled on-board SCSI controller
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CHAPTER 3
AMI® BIOS USERS GUIDE
Chapter 3
AMI® BIOS USER’S GUIDE
The system configuration information and chipset register information is
stored in the CMOS RAM. This information is retained by a battery when
the power is off. Enter the BIOS setup (if needed) to modify this information.
The following pages will describe how to enter BIOS setup, and all about
options.
3-1
CHAPTER 3
AMI® BIOS USERS GUIDE
Enter BIOS Setup
Enter the AMI® setup Program’s Main Menu as follows:
1. Turn on or reboot the system. The following screen appears with
a series of diagnostic check.
AMIBIOS (C) 1996 American Megatrends Inc.
AGIOMS VXXX XXXXXX
Hit <DEL> if you want to run setup
(C) American Megatrends Inc.
61-XXXX-001169-00111111-071592-i82440FX-H
2 . When the “Hit <DEL>” message appears, press <DEL> key to
enter the BIOS setup screen.
3 . After pressing <DEL> key, the BIOS setup screen will appear .
Note: If you don’t want to modify CMOS original setting, then don’t press any
key during the system boot.
3-2
CHAPTER 3
AMIBIOS HIFLEX SETUP UTILITIES - VERSION 1.07
(C) 1996 American Megatrends, Inc. All Rights
Reserved
Standard CMOS Setup
Advanced CMOS Setup
Advanced Chipset Setup
Power Management Setup
PCI/Plug and Play Setup
Peripheral Setup
Hardware Monitor Setup (optional)
Auto-Detect Hard Disks
Change User Password
Change Supervisor Password
Change Language Setting
Auto Configuration with Optimal Settings
Auto Configuration with Fail Safe Settings
Save Settings and Exit
Exit without Saving
Standard CMOS setup for changing time, hard disk type, etc.
AMI® BIOS USERS GUIDE
4 . Use the <Up> and <Down> key to move the highlight scroll up or
down.
5 . Use the <ENTER> key to select the option.
6 . To exit, press <ESC>. T o save and exit, press <F10>.
7 . Press <F1> for help to provide a detailed explanation of each
option.
3-3
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