MB820
Socket 478 Pentium® 4
Intel® 875P Chipset
Industrial Motherboard
USER’S MANUAL
Version 1.1
ii MB820 User’s Manual
Acknowledgments
Award is a registered trademark of Award Software International,
Inc.
PS/2 is a trademark of International Business Machines
Corporation.
Intel and Pentium 4 are registered trademarks of Intel
Corporation.
Microsoft Windows is a registered trademark of Microsoft
Corporation.
Winbond is a registered trademark of Winbond Electronics
Corporation.
All other product names or trademarks are properties of their
respective owners.
MB820 User’s Manual iii
Table of Contents
Introduction.......................................................1
Checklist..............................................................................1
Product Description.............................................................2
Specifications......................................................................3
Board Dimensions...............................................................4
Installations.......................................................5
Installing the CPU...............................................................6
ATX Power Installation ......................................................7
Installing the Memory.........................................................7
Setting the Jumpers .............................................................8
Connectors on MB820 ......................................................13
Watchdog Timer Configuration........................................25
BIOS Setup.......................................................29
Drivers Installation......................................51
Intel 875P Chipset Software Intallation Utility.................52
Realtek AC97 Codec Audio Driver Installation................55
Intel PRO LAN Drivers Installation..................................56
VGA Drivers Installation ..................................................57
iv MB820 User’s Manual
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INTRODUCTION
MB820 User’s Manual 1
Introduction
Checklist
Your MB820 Pentium
®
4 motherboard package should include the items
listed below:
• The MB820 motherboard
• This User’s Manual
• 1 Backplate
• 2 IDE Cable
• 1 Floppy Cable
• 2 SATA Cable
• 1 Dual-Serial-Port Cable
• 1 CD containing the following:
• Chipset Drivers
• Flash Memory Utility
INSTALLATIONS
2 MB820 User’s Manual
Product Description
The MB820 Pentium
®
4 motherboard incorporates the Intel 875P chipset
that can utilize a single PGA478 processor of up to 3.2GHz or higher
and supports FSB frequency of 400/533/800Mhz (100Mhz, 133Mhz,
and 200Mhz HCLK respectively).
The 875P chipset is designed for use with the Pentium
®
4 processor with
512-KB L2 cache on 0.13 micron process. The integrated MCH
component provides the CPU interface, DDR interface, AGP interface,
Hub Interface and AGP 8X graphics interface.
Four DDR memory sockets supports DDR 400/333/266 SDRAM
DIMM modules of up to 4GB in capacity. ECC is also supported.
The board also comes optional with either integrated 10/100MB LAN
support or an Intel
®
82547GI Gigabit LAN controller. Two Serial ATA
connectors offer 1.5 Gigabits/sec data throughput speed - faster than the
most advanced parallel ATA.
Expansion is provided by four PCI slots, two ISA slots and one AGP8X
interface. Other advanced features include six USB 2.0 ports, IrDA
interface, PCI to ISA bridge, digital I/O, four serial ports, watchdog
timer and audio function. Dimensions of the board are 12” by 9.5” in an
ATX form factor.
INTRODUCTION
MB820 User’s Manual 3
Specifications
Product Name MB820
CPU Support Intel® Pentium® 4
CPU Voltage 0.8375V~1.6V (VRD 10)
System Speed 2.26G~3.2GHz
CPU Operating
Frequency
533MHz / 800MHz
Green /APM APM1.2
CPU Socket Socket 478
Chipset
Intel® 875P Chipset
MCH: 82875P 1005-pin FC-BGA, ICH5: 82801ER
460-pin MBGA, FWH
BIOS Award BIOS; Supports ACPI
Cache 256K (Celeron) / 512K(Pentium® 4) Level 2 cache
VGA SMI 712 2D Graphics Controller (PCI interface)
supports CRT display
Embedded 2MB display memory
AGP port AGP 8X interface
LAN ICH5 integrated LAN controller (10/100Mb) + Phy
82562EZ or one Intel® (1) Gigabit LAN controller
82547EI/GI (CSA port)
Audio ICH5 built-in Sound controller + AC97 Codec ALC650
(5.1 channel)
Memory type
Four (4) x DDR sockets; supports 2.5V DDR400/333
SDRAM DIMM module (support dual channel); Max.
capacity - 4GB; supports ECC function
LPC I/O Winbond W83627HF: IrDAx1, LPTx1, COM1
(RS-232), COM2 (RS-232/ RS422/RS485), FDC
2.88MB, Hardware monitoring (3 thermal inputs, 8
voltage monitor inputs, VID0-4, 1 chassis open
detection, 3 fan headers)
RTC/CMOS Built in ICH5
Battery Lithium battery
Keyboard Controller Built in Winbond 83627HF
IDE ICH5 built-in, IDE1, IDE2 (Ultra DMA 33/66/100)
Serial ATA connector Two (2) ports
D-type connectors PS/2 mouse, PS/2 keyboard, VGA (CRT), RJ-45,
Sound, USBx6
Power Connector ATX 12V
Expansion Slots 1 AGP slot, 4 PCI slots, 2 ISA slots
PCI to ISA Bridge Winbond W83628F with W83629D
Secondary Super I/O Winbond 83877 (COM3, COM4 RS-232)
USB Six (6) ports on board, USB 2.0 compliant
Digital I/O 4 In, 4 Out
SSD Interface DiskOnChip socket supports up to 512MB capacity
Watchdog Timer Supports 256 segments (0,1,2…255. sec/min)
System Voltages +5V, +12V, -12V, 5VSB, -5V, 3.3V
Board Size 12” x 9.5” (ATX form factor)
Other Features IrDA interface, Modem Wakeup, LAN Wakeup
INSTALLATIONS
4 MB820 User’s Manual
Board Dimensions
INSTALLATIONS
MB820 User’s Manual 5
Installations
This section provides information on how to use the jumpers and
connectors on the MB820 in order to set up a workable system. The
topics covered are:
Installing the CPU...............................................................6
ATX Power Installation ......................................................7
Installing the Memory.........................................................7
Setting the Jumpers .............................................................8
Connectors on MB820 ......................................................13
Watchdog Timer Configuration........................................25
INSTALLATIONS
6 MB820 User’s Manual
Installing the CPU
The MB820 motherboard supports a Socket 478 processor socket for
Intel
®
Pentium® 4 processors.
The Socket 478 processor socket comes with a lever to secure the
processor. Raise this lever to about a 90° angle to allow the insertion of
the processor. Place the processor into the socket by making sure the
notch on the corner of the CPU corresponds with the notch on the inside
of the socket. Once the processor has slide into the socket, return the
lever to the lock position. Refer to the figures below.
After you have installed the processor into the socket, check if the
jumpers for the CPU type and speed are correct.
NOTE:
Ensure that the CPU heat sink and the CPU top surface are in
total contact to avoid CPU overheating problem that would
cause your system to hang or be unstable.
INSTALLATIONS
MB820 User’s Manual 7
ATX Power Installation
The system power is provided to the motherboard with the ATXP1 and
ATXP2 ATX power connectors. ATXP2 is a 4-pin 12V power
connector. ATXP1 is to be connected to a standard ATX power
connector.
Installing the Memory
The MB820 motherboard supports four DDR memory sockets for a
maximum total memory of 4GB in DDR memory type. You can install
unbuffered & ECC DDR DIMMs. It supports DDR266 when installed
with CPUs that have clock speeds of 400MHz. It supports DDR266/333
when installed with CPUs that have clock speeds of 533MHz. It supports
DDR266/320/400 when installed with CPUs that have clock speeds of
800MHz. The board provides dual channel functionality for its DIMM
slots. DIMM1/2is for one channel and DIMM3/4 is for another channel.
Enabling dual channels can increase data access rates by putting two
similar-size DDR modules into two same-color DIMM slots.
Basically, the system memory interface has the following features:
Supports two 64-bit wide DDR data channels
Available bandwidth up to 3.2GB/s (DDR400) for single-channel
mode and 6.4GB/s (DDR400) in dual-channel mode.
Supports ECC DIMMs.
Supports 128Mb, 256Mb, 512Mb, 1Gb DDR technologies.
Supports only x8, x16, DDR devices with four banks
Registered DIMMs not supported
Supports opportunistic refresh
Up to 16 simultaneously open pages (four per row, four rows
maximum)
INSTALLATIONS
8 MB820 User’s Manual
Setting the Jumpers
Jumpers are used on MB820 to select various settings and features
according to your needs and applications. Contact your supplier if you
have doubts about the best configuration for your needs. The following
lists the connectors on MB820 and their respective functions.
Jumper Locations on MB820..........................................................9
JP1: RS232/422/485 (COM2) Selection....................................... 10
JP2: COM1 RS232 +5V/+12V Power Setting..............................10
JP3: COM2 RS232 +5V/+12V Power Setting..............................10
JP4: Clear CMOS Contents ..........................................................11
JP5: COM3 RS232 +5V/+12V Power Setting..............................11
JP6: COM4 RS232 +5V/+12V Power Setting..............................11
JP7: DiskOnChip Address Select ................................................. 12
JP8: Onboard VGA Enable/Disable ............................................. 12
INSTALLATIONS
MB820 User’s Manual 9
Jumper Locations on MB820
Jumper Locations on MB820 ...........................................................Page
JP1: RS232/422/485 (COM2) Selection.............................................. 10
JP2: COM1 RS232 +5V/+12V Power Setting .................................... 10
JP3: COM2 RS232 +5V/+12V Power Setting .................................... 10
JP4: Clear CMOS Contents................................................................. 11
JP5: COM3 RS232 +5V/+12V Power Setting .................................... 11
JP6: COM4 RS232 +5V/+12V Power Setting .................................... 11
JP7: DiskOnChip Address Select........................................................ 12
JP8: Onboard VGA Enable/Disable.................................................... 12
INSTALLATIONS
10 MB820 User’s Manual
JP1: RS232/422/485 (COM2) Selection
COM1 is fixed for RS-232 use only.
J3, COM2 is selectable for RS232, RS-422 and RS-485.
The following table describes the jumper settings for COM2 selection.
COM2
Function
RS-232 RS-422 RS-485
Jumper
Setting
(pin closed)
Short:
1-2
9-11
10-12
15-17
16-18
Short:
3-4
7-9
8-10
13-15
14-16
Short:
5-6
7-9
8-10
13-15
14-16
JP2: COM1 RS232 +5V/+12V Power Setting
JP2 Setting Function
Pin 1-2
Short/Closed
+12V
Pin 3-4
Short/Closed
Normal
Pin 5-6
Short/Closed
+5V
JP3: COM2 RS232 +5V/+12V Power Setting
JP3 Setting Function
Pin 1-2
Short/Closed
+12V
Pin 3-4
Short/Closed
Normal
Pin 5-6
Short/Closed
+5V
INSTALLATIONS
MB820 User’s Manual 11
JP4: Clear CMOS Contents
Use JP4, a 3-pin header, to clear the CMOS contents. Note that the
ATX-power connector should be disconnected from the motherboard
before clearing CMOS.
JP4 Setting Function
Pin 1-2
Short/Closed
Normal
Pin 2-3
Short/Closed
Clear CMOS
JP5: COM3 RS232 +5V/+12V Power Setting
JP5 Setting Function
Pin 1-2
Short/Closed
+12V
Pin 3-4
Short/Closed
Normal
Pin 5-6
Short/Closed
+5V
JP6: COM4 RS232 +5V/+12V Power Setting
JP6 Setting Function
Pin 1-2
Short/Closed
+12V
Pin 3-4
Short/Closed
Normal
Pin 5-6
Short/Closed
+5V
INSTALLATIONS
12 MB820 User’s Manual
JP7: DiskOnChip Address Select
JP7 Address
D0000-D7FFF
D8000-DFFFF (default)
JP8: Onboard VGA Enable/Disable
Use JP8 to enable or disable the onboard VGA controller.
JP8 Setting Onboard VGA
Pin 1-2
Short/Closed
Enabled
Pin 2-3
Short/Closed
Disabled
INSTALLATIONS
MB820 User’s Manual 13
[
Connectors on MB820
The connectors on MB820 allows you to connect external devices such
as keyboard, floppy disk drives, hard disk drives, printers, etc. The
following table lists the connectors on MB820 and their respective
functions.
Connector Locations on MB820 .................................................. 14
ATXP1: ATX Power Supply Connector...................................... 15
ATXP2: ATX 12V Power Connector .......................................... 15
DIMM1, DIMM2: DDR Channel A Connectors.......................... 15
DIMM3, DIMM4: DDR Channel B Connectors.......................... 15
AGP1: AGP Slot .......................................................................... 15
PCI1, PCI2, PCI3, PCI4: PCI Slots.............................................. 15
SL1, SL2: ISA Slots..................................................................... 15
CN1: PS/2 Keyboard and PS/2 Mouse Connectors...................... 16
CN2: 4-port USB Connector........................................................ 16
CN3, J3: Serial Ports.................................................................... 16
CN4: Parallel Port Connector....................................................... 17
CN6: VGA CRT Connector ......................................................... 17
CN7: USB and LAN RJ45 Connectors........................................ 18
CN8: Audio Connector................................................................. 18
J1: IrDA Connector...................................................................... 18
J4: CD-In Audio Connector ......................................................... 18
J5, J6: Serial ATA (SATA) Connectors....................................... 19
J8, J10: COM3 and COM4 Serial Ports Connector...................... 19
J9: Wake On LAN Connector ...................................................... 19
J11: Digital I/O Connector (4 in, 4 out) ....................................... 20
J12: System Function Connector.................................................. 20
J13: USB Connector..................................................................... 20
FAN1: CPU Fan Power Connector .............................................. 22
FAN2: VGA Fan Power Connector ............................................. 22
FAN3: Chassis Fan Power Connector.......................................... 22
FDD1: Floppy Drive Connector................................................... 23
IDE, IDE2: Primary and Secondary IDE Connectors .................. 24
INSTALLATIONS
14 MB820 User’s Manual
Connector Locations on MB820
Connectors on MB820.......................................................................................................................................Page
ATXP1: ATX Power Supply Connector................................................................................................................15
ATXP2: ATX 12V Power Connector....................................................................................................................15
CN1: PS/2 Keyboard and PS/2 Mouse Connectors...............................................................................................16
CN2: 4-port USB Connector..................................................................................................................................16
CN3, J3: Serial Ports..............................................................................................................................................16
CN4: Parallel Port Connector ................................................................................................................................17
CN6: VGA CRT Connector...................................................................................................................................17
CN7: USB and LAN RJ45 Connectors..................................................................................................................18
CN8: Audio Connector ..........................................................................................................................................18
J1: IrDA Connector................................................................................................................................................18
J4: CD-In Audio Connector...................................................................................................................................18
J5, J6: Serial ATA (SATA) Connectors ................................................................................................................19
J8, J10: COM3 and COM4 Serial Ports Connector...............................................................................................19
J9: Wake On LAN Connector................................................................................................................................19
J11: Digital I/O Connector (4 in, 4 out).................................................................................................................20
J12: System Function Connector...........................................................................................................................20
J13: USB Connector ..............................................................................................................................................20
FAN1: CPU Fan Power Connector........................................................................................................................22
FAN2: VGA Fan Power Connector.......................................................................................................................22
FAN3: Chassis Fan Power Connector ...................................................................................................................22
FDD1: Floppy Drive Connector.............................................................................................................................23
IDE, IDE2: Primary and Secondary IDE Connectors ............................................................................................24
INSTALLATIONS
MB820 User’s Manual 15
ATXP1: ATX Power Supply Connector
ATXP1 is a 20-pin ATX power supply connector. Refer to the following
table for the pin out assignments.
Signal Name Pin # Pin # Signal Name
3.3V 11 1 3.3V
-12V 12 2 3.3V
Ground 13 3 Ground
PS-ON 14 4 +5V
Ground 15 5 Ground
Ground 16 6 +5V
Ground 17 7 Ground
-5V 18 8 Power good
+5V 19 9 5VSB
+5V 20 10 +12V
11 1
20 10
ATXP2: ATX 12V Power Connector
Pin # Signal Name
1 Ground
2 Ground
3 +12V
4 +12V
DIMM1, DIMM2: DDR Channel A Connectors
DIMM1 and DIMM2 are the first DDR channel connectors that must be
use together at one time in order for the system to function properly.
DIMM3, DIMM4: DDR Channel B Connectors
DIMM3 and DIMM4 are the second DDR channel connectors that must
be use together at one time in order for the system to function properly.
AGP1: AGP Slot
PCI1, PCI2, PCI3, PCI4: PCI Slots
SL1, SL2: ISA Slots
INSTALLATIONS
16 MB820 User’s Manual
CN1: PS/2 Keyboard and PS/2 Mouse Connectors
PS/2 Mouse
PS/2 Keyboard
Signal Name
Keyboard Mouse Signal Name
Keyboard data 1 1 Mouse data
N.C. 2 2 N.C.
GND 3 3 GND
5V 4 4 5V
Keyboard clock 5 5 Mouse clock
N.C. 6 6 N.C.
CN2: 4-port USB Connector
CN2 is a USB connector consisting of four ports stacked vertically.
Pin Signal Name
1 Ground
2 USB+
3 USB-
CN2
4 Vcc
CN3, J3: Serial Ports
CN3 (COM1) is a DB-9 connector, while J3 is a COM2 pin-header
connector. COM2 is optionally available as a DB-9 connector (CN5).
COM1 COM2
Signal Name Pin # Pin # Signal Name
DCD, Data carrier detect 1 6 DSR, Data set ready
RXD, Receive data 2 7 RTS, Request to send
TXD, Transmit data 3 8 CTS, Clear to send
DTR, Data terminal ready 4 9 RI, Ring indicator
GND, ground 5 10 Not Used
INSTALLATIONS
MB820 User’s Manual 17
CN4: Parallel Port Connector
CN4 is a DB-25 external connector situated on top of the VGA and serial
ports. The following table describes the pin-out assignments of this
connector.
CN4 Parallel Port
Signal Name Pin # Pin # Signal Name
Line printer strobe 1 14 AutoFeed
PD0, parallel data 0 2 15 Error
PD1, parallel data 1 3 16 Initialize
PD2, parallel data 2 4 17 Select
PD3, parallel data 3 5 18 Ground
PD4, parallel data 4 6 19 Ground
PD5, parallel data 5 7 20 Ground
PD6, parallel data 6 8 21 Ground
PD7, parallel data 7 9 22 Ground
ACK, acknowledge 10 23 Ground
Busy 11 24 Ground
Paper empty 12 25 Ground
Select 13 N/A N/A
CN6: VGA CRT Connector
CN6 is a DB-15 VGA connector located beside the COM1 port. The
following table shows the pin-out assignments of this connector.
Signal Name Pin # Pin # Signal Name
Red 1 2 Green
Blue 3 4 N.C.
GND 5 6 GND
GND 7 8 GND
N.C. 9 10 GND
N.C. 11 12 N.C.
HSYNC 13 14 VSYNC
NC 15
INSTALLATIONS
18 MB820 User’s Manual
CN7: USB and LAN RJ45 Connectors
CN7 consists of an RJ-45 connector (top) and two stacked USB ports.
Refer to the section below for their respective pin assignments.
Pin # Signal Name
1 Vcc
2 USB3 USB+
USB0
USB1
4 Ground
CN8: Audio Connector
CN8 is a 3-jack audio connector beside the
USB/RJ45 combo connector.
J1: IrDA Connector
J1 is used for an optional IrDA connector for wireless communication.
Pin # Signal Name
1 +5V
2 No connect
3 Ir RX
4 Ground
5 Ir TX
J4: CD-In Audio Connector
Pin # Signal Name
1 CD Audio R
2 Ground
3 Ground
4 CD Audio L
INSTALLATIONS
MB820 User’s Manual 19
J5, J6: Serial ATA (SATA) Connectors
The SATA connectors support serial ATA 150. Each connector can only
use one serial ATA hard disk. J6 is port 1 and J5 is port 2.
J8, J10: COM3 and COM4 Serial Ports Connector
J8 and J10 are both 10-pin headers, as the COM3 and COM4 serial port
pin headers supporting RS232.
Pin # Signal Name
1 DCD
2 RX
3 TX
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
10 NC
J9: Wake On LAN Connector
J9 is a 3-pin header for the Wake On LAN function on the motherboard.
The following table shows the pin out assignments of this connector.
Wake On LAN will function properly only with an ATX power supply
with 5VSB that has 1A.
Pin # Signal Name
1 +5VSB
2 Ground
3 LAN Wakeup
INSTALLATIONS
20 MB820 User’s Manual
J11: Digital I/O Connector (4 in, 4 out)
This 12-pin Digital I/O connector supports TTL levels and is used to
control external devices requiring ON/OFF circuitry.
Signal Name Pin # Pin # Signal Name
IN0 1 7 +5V
IN1 2 8 OUT0
IN2 3 9 Ground
IN3 4 10 OUT1
GROUND 5 11 +12V
OUT2 6 12 OUT3
J12: System Function Connector
J12 provides connectors for system indicators that provide light
indication of the computer activities and switches to change the
computer status. J12 is a 20-pin header that provides interfaces for the
following functions.
Hard Disk Drive LED
Reset Switch
Not Defined
ATX Power On Switch
SMI / Hardware Switch
Power LED
Speaker
Speaker: Pins 1 - 4
This connector provides an interface to a speaker for audio
tone generation. An 8-ohm speaker is recommended.
Pin # Signal Name
1 Speaker out
2 No connect
3 Ground
4 +5V
INSTALLATIONS
MB820 User’s Manual 21
Power LED: Pins 11 - 15
The power LED indicates the status of the main power
switch.
Pin # Signal Name
11 Power LED
12 No connect
13 Ground
14 No connect
15 Ground
SMI/Hardware Switch: Pins 6 and 16
This connector supports the "Green Switch" on the control
panel, which, when pressed, will force the system into the
power-saving mode immediately.
Pin #
Signal Name
6 SMI
16 Ground
ATX Power ON Switch: Pins 7 and 17
This 2-pin connector is an “ATX Power Supply On/Off
Switch” on the system that connects to the power switch on
the case. When pressed, the power switch will force the
system to power on. When pressed again, it will force the
system to power off.
Reset Switch: Pins 9 and 19
The reset switch allows the user to reset the system without
turning the main power switch off and then on again.
Orientation is not required when making a connection to
this header.
INSTALLATIONS
22 MB820 User’s Manual
Hard Disk Drive LED Connector: Pins 10 and 20
This connector connects to the hard drive activity LED on
control panel. This LED will flash when the HDD is being
accessed.
Pin # Signal Name
10 HDD Active
20 5V
J13: USB Connector
The following table shows the pin outs of the USB pin header connector.
Signal Name Pin Pin Signal Name
Vcc 1 5 Ground
D- 2 6 D +
D + 3 7 D -
J13
Ground 4 8 Vcc
FAN1: CPU Fan Power Connector
Pin # Signal Name
1 Ground
2 +12V
3 Rotation detection
FAN2: VGA Fan Power Connector
Pin # Signal Name
1 Ground
2 +12V
3 Rotation detection
FAN3: Chassis Fan Power Connector
Pin # Signal Name
1 Ground
2 +12V
3 Rotation detection
INSTALLATIONS
MB820 User’s Manual 23
FDD1: Floppy Drive Connector
Signal Name Pin # Pin # Signal Name
Ground 1 2 RM/LC
Ground 3 4 No connect
Ground 5 6 No connect
Ground 7 8 Index
Ground 9 10 Motor enable 0
Ground 11 12 Drive select 1
Ground 13 14 Drive select 0
Ground 15 16 Motor enable 1
Ground 17 18 Direction
Ground 19 20 Step
Ground 21 22 Write data
Ground 23 24 Write gate
Ground 25 26 Track 00
Ground 27 28 Write protect
Ground 29 30 Read data
Ground 31 32 Side 1 select
FDD1
Ground 33 34 Diskette change
INSTALLATIONS
24 MB820 User’s Manual
IDE, IDE2: Primary and Secondary IDE Connectors
Signal Name Pin # Pin # Signal Name
Reset IDE 1 2 Ground
Host data 7 3 4 Host data 8
Host data 6 5 6 Host data 9
Host data 5 7 8 Host data 10
Host data 4 9 10 Host data 11
Host data 3 11 12 Host data 12
Host data 2 13 14 Host data 13
Host data 1 15 16 Host data 14
Host data 0 17 18 Host data 15
Ground 19 20 Protect pin
DRQ0 21 22 Ground
Host IOW 23 24 Ground
Host IOR 25 26 Ground
IOCHRDY 27 28 Host ALE
DACK0 29 30 Ground
IRQ14 31 32 No connect
Address 1 33 34 No connect
Address 0 35 36 Address 2
Chip select 0 37 38 Chip select 1
IDE1
Activity 39 40 Ground
Signal Name Pin # Pin # Signal Name
Reset IDE 1 2 Ground
Host data 7 3 4 Host data 8
Host data 6 5 6 Host data 9
Host data 5 7 8 Host data 10
Host data 4 9 10 Host data 11
Host data 3 11 12 Host data 12
Host data 2 13 14 Host data 13
Host data 1 15 16 Host data 14
Host data 0 17 18 Host data 15
Ground 19 20 Protect pin
DRQ1 21 22 Ground
Host IOW 23 24 Ground
Host IOR 25 26 Ground
IOCHRDY 27 28 Host ALE
DACK1 29 30 Ground
IRQ15 31 32 No connect
Address 1 33 34 No connect
Address 0 35 36 Address 2
Chip select 0 37 38 Chip select 1
IDE2
Activity 39 40 Ground
INSTALLATIONS
MB820 User’s Manual 25
Watchdog Timer Configuration
The WDT is used to generate a variety of output signals after a user
programmable count. The WDT is suitable for use in the prevention of
system lock-up, such as when software becomes trapped in a deadlock.
Under these sort of circumstances, the timer will count to zero and the
selected outputs will be driven. Under normal circumstance, the user
will restart the WDT at regular intervals before the timer counts to zero.
SAMPLE CODE:
This code and information is provided "as is" without warranty of any
kind, either expressed or implied, including but not limited to the
implied warranties of merchantability and/or fitness for a particular
purpose.
;[]================================================
; Name : Enable_And_Set_Watchdog
; IN : AL - 1sec ~ 255sec
; OUT : None
;[]================================================
Enable_And_Set_Watchdog Proc Near
push ax ;save time interval
call Unlock_Chip
mov cl, 2Bh
call Read_Reg
and al, NOT 10h
call Write_Reg ;set GP24 as WDTO
mov cl, 07h
mov al, 08h
call Write_Reg ;switch to LD8
INSTALLATIONS
26 MB820 User’s Manual
mov cl, 0F5h
call Read_Reg
and al, NOT 08h
call Write_Reg ;set count mode as second
pop ax
mov cl, 0F6h
call Write_Reg ;set watchdog timer
mov al, 01h
mov cl, 30h
call Write_Reg ;watchdog enabled
call Lock_Chip
ret
Enable_And_Set_Watchdog Endp
;[]===============================================
; Name : Disable_Watchdog
; IN : None
; OUT : None
;[]===============================================
Disable_Watchdog Proc Near
call Unlock_Chip
mov cl, 07h
mov al, 08h
call Write_Reg ;switch to LD8
xor al, al
mov cl, 0F6h
call Write_Reg ;clear watchdog timer
xor al, al
mov cl, 30h
call Write_Reg ;watchdog disabled
call Lock_Chip
ret
Disable_Watchdog Endp
;[]===============================================
INSTALLATIONS
MB820 User’s Manual 27
; Name : Unlock_Chip
; IN : None
; OUT : None
;[]===============================================
Unlock_Chip Proc Near
mov dx, 2Eh
mov al, 87h
out dx, al
out dx, al
ret
Unlock_Chip Endp
;[]================================================
; Name : Lock_Chip
; IN : None
; OUT : None
;[]================================================
Unlock_Chip Proc Near
mov dx, 2Eh
mov al, 0AAh
out dx, al
ret
Unlock_Chip Endp
;[]================================================
; Name : Write_Reg
; IN : CL - register index
; AL - Value to write
; OUT : None
;[]================================================
Write_Reg Proc Near
push ax
mov dx, 2Eh
mov al,cl
out dx,al
pop ax
inc dx
out dx,al
ret
Write_Reg Endp
;[]================================================
INSTALLATIONS
28 MB820 User’s Manual
; Name : Read_Reg
; IN : CL - register index
; OUT : AL - Value to read
;[]=================================================
==
Read_Reg Proc Near
mov al, cl
mov dx, 2Eh
out dx, al
inc dx
in al, dx
ret
Read_Reg Endp
;[]================================================
BIOS SETUP
MB820 User’s Manual 29
BIOS Setup
This chapter describes the different settings available in the Award
BIOS that comes with the motherboard. The topics covered in this
chapter are as follows:
BIOS Introduction..................................................................... 30
BIOS Setup................................................................................. 30
Standard CMOS Setup.............................................................. 32
Advanced BIOS Features......................................................... 35
Advanced Chipset Features...................................................... 38
Integrated Peripherals ............................................................... 40
Power Management Setup........................................................ 44
PNP/PCI Configurations........................................................... 47
PC Health Status........................................................................ 48
Frequency/Voltage Control...................................................... 49
Load Fail-Safe Defaults............................................................ 50
Load Setup Defaults.................................................................. 50
Set Supervisor/User Password................................................. 50
Save & Exit Setup ..................................................................... 50
Exit Without Saving.................................................................. 50
BIOS SETUP
30 MB820 User’s Manual
BIOS Introduction
The Award BIOS (Basic Input/Output System) installed in your
computer system’s ROM supports Intel
®
Pentium® 4 processors. The
BIOS provides critical low-level support for a standard device such as
disk drives, serial ports and parallel ports. It also adds virus and
password protection as well as special support for detailed fine-tuning of
the chipset controlling the entire system.
BIOS Setup
The Award BIOS provides a Setup utility program for specifying the
system configurations and settings. The BIOS ROM of the system stores
the Setup utility. When you turn on the computer, the Award BIOS is
immediately activated. Pressing the <Del> key immediately allows you
to enter the Setup utility. If you are a little bit late pressing th e <Del>
key, POST (Power On Self Test) will continue with its test routines, thus
preventing you from invoking the Setup. If you still wish to enter Setup,
restart the system by pressing the ”Reset” button or simultaneously
pressing the <Ctrl>, <Alt> and <Delete> keys. You can also restart by
turning the system Off and back On again. The following message will
appear on the screen:
Press <DEL> to Enter Setup
In general, you press the arrow keys to highlight items, <Enter> to
select, the <PgUp> and <PgDn> keys to change entries, <F1> for help
and <Esc> to quit.
When you enter the Setup utility, the Main Menu screen will appear on
the screen. The Main Menu allows you to select from various setup
functions and exit choices.
BIOS SETUP
MB820 User’s Manual 31
Phoenix - AwardBIOS CMOS Setup Utility
Standard CMOS Features Frequency/Voltage Control
Advanced BIOS Features Load Fail-Safe Defaults
Advanced Chipset Features Load Optimized Defaults
Integrated Peripherals Set Supervisor Password
Power Management Setup Set User Password
PnP/PCI Configurations Save & Exit Setup
PC Health Status Exit Without Saving
ESC : Quit Ç È Æ Å : Select Item
F10 : Save & Exit Setup
Time, Date, Hard Disk Type…
The section below the setup items of the Main Menu displays the control
keys for this menu. At the bottom of the Main Menu just below the
control keys section, there is another section, which displays information
on the currently highlighted item in the list.
Note:
If the system cannot boot after making and saving system
changes with Setup, the Award BIOS supports an override to
the CMOS settings that resets your system to its default.
Warning:
It is strongly recommended that you avoid making any
changes to the chipset defaults. These defaults have been
carefully chosen by both Award and your system
manufacturer to provide the absolute maximum performance
and reliability. Changing the defaults could cause the system
to become unstable and crash in some cases.
BIOS SETUP
32 MB820 User’s Manual
Standard CMOS Setup
“Standard CMOS Setup” choice allows you to record some basic
hardware configurations in your computer system and set the system
clock and error handling. If the motherboard is already installed in a
working system, you will not need to select this option. You will need to
run the Standard CMOS option, however, if you change your system
hardware configurations, the onboard battery fails, or the configuration
stored in the CMOS memory was lost or damaged.
Phoenix - AwardBIOS CMOS Setup Utility
Standard CMOS Features
Date (mm:dd:yy) Thu, May 21, 2001 Item Help
Time (hh:mm:ss) 00 : 00 : 00 Menu Level
IDE Channel 0 Master None Change the day, month,
IDE Channel 0 Slave None Year and century
IDE Channel 1 Master None
IDE Channel 1 Slave None
IDE Channel 2 Master None
IDE Channel 3 Master None
Drive A 1.44M, 3.5 in.
Drive B None
Video EGA/VGA
Halt On All Errors
Base Memory 640K
Extended Memory 129024K
Total Memory 130048K
At the bottom of the menu are the control keys for use on this menu. If
you need any help in each item field, you can press the <F1> key. It will
display the relevant information to help you. The memory display at the
lower right-hand side of the menu is read-only. It will adjust
automatically according to the memory changed. The following
describes each item of this menu.
Date
The date format is:
Day : Sun to Sat
Month : 1 to 12
Date : 1 to 31
Year : 1994 to 2079
To set the date, highlight the “Date” field and use the PageUp/
PageDown or +/- keys to set the current time.
BIOS SETUP
MB820 User’s Manual 33
Time
The time format is:
Hour : 00 to 23
Minute : 00 to 59
Second : 00 to 59
To set the time, highlight the “Time” field and use the <PgUp>/ <PgDn>
or +/- keys to set the current time.
IDE Primary HDDs / IDE Secondary HDDs
The onboard PCI IDE connectors provide Primary and Secondary
channels for connecting up to four IDE hard disks or other IDE devices.
Each channel can support up to two hard disks; the first is the “Master”
and the second is the “Slave”.
Press <Enter> to configure the hard disk. The selections include Auto,
Manual, and None. Select ‘Manual’ to define the drive information
manually. You will be asked to enter the following items.
CYLS : Number of cylinders
HEAD : Number of read/write heads
PRECOMP : Write precompensation
LANDZ : Landing zone
SECTOR : Number of sectors
The Access Mode selections are as follows:
Auto
Normal (HD < 528MB)
Large (for MS-DOS only)
LBA (HD > 528MB and supports
Logical Block Addressing)
Remarks: The main board supports two serial ATA ports and are
represented in this setting as IDE Channel 2 / 3 Master.
Drive A / Drive B
These fields identify the types of floppy disk drive A or drive B that has
been installed in the computer. The available specifications are:
360KB
5.25 in.
1.2MB
5.25 in.
720KB
3.5 in.
1.44MB
3.5 in.
2.88MB
3.5 in.
BIOS SETUP
34 MB820 User’s Manual
Video
This field selects the type of video displa y card instal led i n your syst em .
You can choose the following video display cards:
EGA/VGA For EGA, VGA, SEGA, SVGA
or PGA monitor adapters. (default)
CGA 40 Power up in 40 column mode.
CGA 80 Power up in 80 column mode.
MONO For Hercules or MDA adapters.
Halt On
This field determines whether or not the system will halt if an error is
detected during power up.
No errors The system boot will not be halted for any error
that may be detected.
All errors Whenever the BIOS detects a non-fatal error,
the system will stop and you will be prompted.
All, But Keyboard The system boot will not be halted for a
keyboard error; it will stop for all other errors
All, But Diskette The system boot will not be halted for a disk
error; it will stop for all other errors.
All, But Disk/Key The system boot will not be halted for a key-
board or disk error; it will stop for all others.
BIOS SETUP
MB820 User’s Manual 35
Advanced BIOS Features
This section allows you to configure and improve your system and
allows you to set up some system features according to your preference.
Phoenix - AwardBIOS CMOS Setup Utility
Advanced BIOS Features
Hard Disk Boot Priority Press Enter ITEM HELP
CPU L1 and L2 Cache Enabled Menu Level
Hyper-threading Technology Enabled
Quick Power On Self Test Enabled
First Boot Device Floppy
Second Boot Device Hard Disk
Third Boot Device CD-ROM
Boot Other Device Enabled
Swap Floppy Drive Disabled
Boot Up Floppy Seek Disabled
Boot Up Numlock Status On
Gate A20 Option Fast
Typematic Rate Setting Disabled
Typematic Rate (chars/Sec) 6
Typematic Delay (Msec) 250
Security Option Setup
Select Hard Disk Boot Device
Priority
APIC Mode Enabled
MPS Version Control for OS 1.4
OS Select For DRAM>64MB Non-OS2
Report No FDD For WIN 95 Yes
Small Logo (EPA) Show Enabled
Hard Disk Boot Priority
This item allows you to set the priority for hard disk boot. When you press enter,
the selections shows the current hard disks used in your system as well as the
“Bootable Add-in Card” that is relevant to other boot sources media such as
SCSI cards and LAN cards.
CPU L1 and L2 Cache
Cache memory is additional memory that is much faster than conventional
DRAM (system memory). CPUs from 486-type on up contain internal cache
memory, and most, but not all, modern PCs have additional (external) cache
memory. When the CPU requests data, the system transfers the requested data
from the main DRAM into cache memory, for even faster access by the CPU.
These items allow you to enable (speed up memory access) or disable the cache
function. By default, these items are Enabled.
Hyper-Threading Technology
This feature is enabled when your processor supports Hyper-Threading
Technology. Otherwise, this field will be hidden.
Quick Power On Self Test
When enabled, this field speeds up the Power On Self Test (POST) after
the system is turned on. If it is set to Enabled, BIOS will skip some
items.
BIOS SETUP
36 MB820 User’s Manual
First/Second/Third Boot Device
These fields determine the drive that the system searches first for an
operating system. The options available include Floppy, LS120, Hard
Disk, CDROM, ZIP100, USB-FDD, USB-CDROM and Disable.
Boot Other Device
These fields allow the system to search for an operating system from
other devices other than the ones selected in the First/Second/Third Boot
Device.
Swap Floppy Drive
This item allows you to determine whether or not to enable Swap Floppy
Drive. When enabled, the BIOS swaps floppy drive assignments so that
Drive A becomes Drive B, and Drive B becomes Drive A. By default,
this field is set to Disabled.
Boot Up Floppy Seek
This feature controls whether the BIOS checks for a floppy drive while
booting up. If it cannot detect one (either due to improper configuration
or its absence), it will flash an error message.
Boot Up NumLock Status
This allows you to activate the NumLock function after you power up
the system.
Gate A20 Option
This field allows you to select how Gate A20 is worked. Gate A20 is a
device used to address memory above 1 MB.
Typematic Rate Setting
When disabled, continually holding down a key on your keyboard will
generate only one instance. When enabled, you can set the two typematic
controls listed next. By default, this field is set to Disabled.
Typematic Rate (Chars/Sec)
When the typematic rate is enabled, the system registers repeated
keystrokes speeds. Settings are from 6 to 30 characters per second.
Typematic Delay (Msec)
When the typematic rate is enabled, this item allows you to set the time
interval for displaying the first and second characters. By default, this
item is set to 250msec.
BIOS SETUP
MB820 User’s Manual 37
Security Option
This field allows you to limit access to the System and Setup. The default
value is Setup. When you select System, the system prompts for the User
Password every time you boot up. When you select Setup, the system
always boots up and prompts for the Supervisor Password only when the
Setup utility is called up.
APIC Mode
APIC stands for Advanced Programmable Interrupt Controller. The
default setting is Enabled.
MPS Version Control for OS
This option is specifies the MPS (Multiprocessor Specification) version
for your operating system. MPS version 1.4 added extended
configuration tables to improve support for multiple PCI bus
configurations and improve future expandab ility. The default setting is
1.4.
OS Select for DRAM > 64MB
This option allows the system to access greater than 64MB of DRAM
memory when used with OS/2 that depends on certain BIOS calls to
access memory. The default setting is Non-OS/2.
Report No FDD For WIN 95
If you are using Windows 95/98 without a floppy disk drive, select
Enabled to release IRQ6. This is required to pass Windows 95/98's SCT
test. You should also disable the Onboard FDC Controller in the
Integrated Peripherals screen when there's no floppy drive in the syst em.
If you set this feature to Disabled, the BIOS will not report the missing
floppy drive to Win95/98.
Small Logo (EPA) Show
The EPA logo appears at the right side of the monitor screen when the
system is boot up. The default setting is Enabled.
BIOS SETUP
38 MB820 User’s Manual
Advanced Chipset Features
This Setup menu controls the configuration of the chipset.
Phoenix - AwardBIOS CMOS Setup Utility
Advanced Chipset Features
DRAM Timing Selectable By SPD ITEM HELP
CAS Latency Time 2.5 Menu Level
Active to Precharge Delay 7
DRAM RAS# to CAS# Delay 3
DRAM RAS# Precharge 3
Memory Frequency For Auto
System BIOS Cacheable Enabled
Video BIOS Cacheable Enabled
Memory Hole at 15M-16M Disabled
Delay Prior to Thermal 16 Min
AGP Aperture Size (MB) 128
Init Display First PCI Slot
DRAM Data Integrity Mode Non-ECC
DRAM Timing Selectable
This option refers to the method by which the DRAM t iming i s selected.
The default is By SPD.
CAS Latency Time
You can configure CAS latency time in HCLKs as 2 or 2.5 or 3. The
system board designer should set the values in this field, depending on
the DRAM installed. Do not change the values in this field unless you
change specifications of the installed DRAM or the installed CPU.
Active to Precharge Delay
The default setting for the Active to Precharge Delay is 7.
DRAM RAS# to CAS# Delay
This option allows you to insert a delay between the RAS (Row Address
Strobe) and CAS (Column Address Strobe) signals. This delay occurs
when the SDRAM is written to, read from or refreshed. Reducing the
delay improves the performance of the SDRAM.
DRAM RAS# Precharge
This option sets the number of cycles required for the RAS to
accumulate its charge before the SDRAM refreshes. The default setting
for the Active to Precharge Delay is 3.
BIOS SETUP
MB820 User’s Manual 39
Memory Frequency For
This field sets the frequency of the DRAM memory installed. The
default setting is Auto. The other settings are DDR266, DDR333,
DDR320 and DDR400.
System BIOS Cacheable
The setting of Enabled allows caching of the system BIOS ROM at
F000h-FFFFFh, resulting in better system performance. However, if
any program writes to this memory area, a system error may result.
Video BIOS Cacheable
The Setting Enabled allows caching of the video BIOS ROM at
C0000h-F7FFFh, resulting in better video performance. However, if
any program writes to this memory area, a system error may result.
Memory Hole At 15M-16M
In order to improve performance, certain space in memory can be
reserved for ISA cards. This memory must be mapped into the memory
space below 16 MB. The choices are Enabled and Disabled.
Delay Prior to Thermal
This field activates the CPU therma l function after t he system s boots for
the set number of minutes. The options are 16Min and 64Min.
AGP Aperture Size
The field sets aperture size of the graphics. The aperture is a portion of
the PCI memory address range dedicated for graphics memory address
space. Host cycles that hit the aperture range are forwarded to the AGP
without any translation. The default setting is 128M.
Init Display First
This field allows the system to initialize first the VGA on chip or the
display card on the PCI Slot.
DRAM Data Integrity Mode
This BIOS feature controls the ECC feature of the memory controller.
ECC, which stands for Error Checking and Correction, enables the
memory controller to detect and correct single-bit soft memory errors.
The memory controller will also be able to detect double-bit errors
although it will not be able to correct them. This provides increased data
integrity and system stability. However, this feature can only be enabled
if you are using special ECC memory modules.
BIOS SETUP
40 MB820 User’s Manual
Integrated Peripherals
This section sets configurations for your hard disk and other integrated
peripherals. The first screen shows three main items for user to select.
Once an item selected, a submenu appears. Details follow.
Phoenix - AwardBIOS CMOS Setup Utility
Integrated Peripherals
On-Chip Primary IDE Device
Press Enter ITEM HELP
Onboard Device
Press Enter Menu Level
SuperIO Device
Press Enter
Phoenix - AwardBIOS CMOS Setup Utility
OnChip IDE Device
IDE Block Mode
Enabled ITEM HELP
IDE DMA transfer access
Enabled Menu Level
On-Chip Primary PCI IDE
Enabled
IDE Primary Master PIO
Auto
IDE Primary Slave PIO
Auto
IDE Primary Master UDMA
Auto
IDE Primary Slave UDMA
Auto
On-Chip Secondary PCI IDE
Enabled
IDE Secondary Master PIO
Auto
IDE Secondary Slave PIO
Auto
IDE Secondary Master UDMA
Auto
IDE Secondary Slave UDMA
Auto
*** On-Chip Serial ATA Setting ***
SATA Mode
IDE
On-Chip Serial ATA
Auto
Serial ATA Port0 Mode
SATA0 master
If your IDE hard drive supports
block mode select Enabled for
automatic detection of the
optimal number of block
read/writes per sector the drive
can support
Serial ATA Port1 Mode SATA1 master
Phoenix - AwardBIOS CMOS Setup Utility
Onboard Device
USB Controller
Enabled ITEM HELP
USB 2.0 Controller
Disabled Menu Level
USB Keyboard Support
Disabled
USB Mouse Support
Disabled
AC97 Audio Auto
LAN Controller Enabled
BIOS SETUP
MB820 User’s Manual 41
Phoenix - AwardBIOS CMOS Setup Utility
SuperIO Device
Onboard FDC Controller Enabled
ITEM HELP
Onboard Serial Port 1 3F8/IRQ4
Menu Level
Onboard Serial Port 2 2F8/IRQ3
UART Mode Select Normal
RxD , TxD Active Hi, Lo
IR Transmission Delay Enabled
UR2 Duplex Mode Half
Use IR Pins IR-Rx2Tx2
Onboard Parallel Port 378/IRQ7
Parallel Port Mode SPP
EPP Mode Select EPP1.7
ECP Mode Use DMA 3
Onboard Serial Port 3 3E8H
Serial Port 3 Use IRQ IRQ5
Onboard Serial Port 4 Disabled
Serial Port 4 Use IRQ IRQ10
Chip Select Pin Disabled
IDE HDD Block Mode
This field allows your hard disk controller to use the fast block mode to
transfer data to and from your hard disk drive.
IDE DMA Transfer Access
Allows IDE transfer to be done in DMA mode
OnChip Primary/Secondary PCI IDE
The integrated peripheral controller contains an IDE interface with
support for two IDE channels. Select Enabled to activate each channel
separately.
IDE Primary/Secondary Master/Slave PIO
These fields allow your system hard disk controller to work faster.
Rather than have the BIOS issue a series of commands that transfer to or
from the disk drive, PIO (Programmed Input/ Output) allows the BIOS to
communicate with the controller and CPU directly.
The system supports five modes, numbered from 0 (default) to 4, which
primarily differ in timing. When Auto is selected, the BIOS will select
the best available mode.
IDE Primary/Secondary Master/Slave UDMA
These fields allow your system to improve disk I/O throughput to
33Mb/sec with the Ultra DMA/33 feature. The options are Auto and
Disabled.
BIOS SETUP
42 MB820 User’s Manual
On-Chip Serial ATA
The default setting of Auto allows the Serial ATA drive to be enabled,
when the system detects one.
USB Controller
The options for this field are Enabled and Disabled. By default, this field
is set to Enabled.
USB 2.0 Controller
The options for this field are Enabled and Disabled. By default, this field
is set to Disabled. In order to use USB 2.0, necessary OS drivers must be
installed first.
USB Keyboard Support
The options for this field are Enabled and Disabled. By default, this field
is set to Disabled.
USB Mouse Support
The options for this field are Enabled and Disabled. By default, this field
is set to Disabled.
AC97 Audio
The default setting of the AC97 Audio is Auto.
LAN Controller
The default setting of the LAN controller is Enabled.
Onboard FDC Controller
Select Enabled if your system has a floppy disk controller (FDC)
installed on the motherboard and you wish to use it. If you install an
add-in FDC or the system has no floppy drive, select Disabled in this
field. This option allows you to select the onboard FDD port.
Onboard Serial/Parallel Port
These fields allow you to select the onboard serial and parallel ports and
their addresses. The default values for these ports are:
Serial Port 1 3F8/IRQ4
Serial Port 2 2F8/IRQ3
Serial Port 3 3E8H/IRQ5
Serial Port 4 Disabled
Parallel Port 378H/IRQ7
BIOS SETUP
MB820 User’s Manual 43
UART Mode Select
This field determines the UART 2 mode in your computer. The default
value is Normal. Other options include IrDA and ASKIR.
Parallel Port Mode
This field allows you to determine parallel port mode function.
SPP Standard Printer Port
EPP Enhanced Parallel Port
ECP Extended Capabilities Port
Chip Select Pin
This item is used in conjunction with the digital I/O function.
BIOS SETUP
44 MB820 User’s Manual
Power Management Setup
The Power Management Setup allows you to save energy of your system
effectively.
Phoenix - AwardBIOS CMOS Setup Utility
Power Management Setup
ACPI Function
Enabled ITEM HELP
Power Management
User Define Menu Level
Video Off Method
V/H SYNC+Blank
Video Off In Suspend
Yes
Suspend Type
Stop Grant
Modem Use IRQ
3
Suspend Mode
Disabled
HDD Power Down
Disabled
Soft-Off by PWR-BTTN
Instant-Off
CPU THRM-Throttling
50%
Wake-Up by PCI Card
Disabled
Power On by Ring
Disabled
Wake Up on Lan
Disabled
Resume by Alarm
Disabled
Date (of Month) Alarm 0
Time (hh:mm:ss) Alarm 0 : 0 : 0
** Reload Global Timer Events **
Primary IDE 0
Enabled
Primary IDE 1
Enabled
Secondary IDE 0
Enabled
Secondary IDE 1
Enabled
FDD, COM, LPT Port
Enabled
PCI PIRQ[A-D] #
Enabled
ACPI Function
Enable this function to support ACPI (Advance Configuration and
Power Interface).
Power Management
This field allows you to select the type of power saving management
modes. There are four selections for Power Management.
Min. Power Saving Minimum power management
Max. Power Saving Maximum power management.
User Define Each of the ranges is from 1 min. to
1hr. Except for HDD Power Down
which ranges from 1 min. to 15 min.
BIOS SETUP
MB820 User’s Manual 45
Video Off Method
This field defines the Video Off features. There are three options.
V/H SYNC + Blank Default setting, blank the screen and turn
off vertical and horizontal scanning.
DPMS Allows BIOS to control the video display.
Blank Screen Writes blanks to the video buffer.
Video Off In Suspend
When enabled, the video is off in suspend mode. The default setting is
Yes.
Suspend Type
The default setting for the Suspend Type field is Stop Grant.
Modem Use IRQ
This field sets the IRQ used by the Modem. By default, the setting is 3.
Suspend Mode
When enabled, and after the set time of system inactivity, all devices
except the CPU will be shut off.
HDD Power Down
When enabled, and after the set time of system inactivity, the hard disk
drive will be powered down while all other devices remain active.
Soft-Off by PWRBTN
This field defines the power-off mode when using an ATX power
supply. The Instant Off mode allows powering off immediately upon
pressing the power button. In the Delay 4 Sec mode, the system powers
off when the power button is pressed for more than four seconds or
enters the suspend mode when pressed for less than 4 seconds.
CPU THRM-Throttling
When the system enters Doze mode, the CPU clock runs onl y part of the
time. You may select the percent of time that the clock runs.
Wake-Up by PCI Cards
Enable this field to allow wake up function through a PCI card.
BIOS SETUP
46 MB820 User’s Manual
Power On by Ring
This field enables or disables the power on of the system through the
modem connected to the serial port or LAN.
Wake Up On LAN
Enable this field to allow wake up function through the onboard LAN.
Resume by Alarm
This field enables or disables the resumption of the system operation.
When enabled, the user is allowed to set the Date and Time.
Reload Global Timer Events
The HDD, FDD, COM, LPT Ports, and PCI PIRQ are I/O events that can
prevent the system from entering a power saving mode or can awaken
the system from such a mode. When an I/O device wants to gain the
attention of the operating system, it signals this by causing an IRQ to
occur. When the operating system is ready to respond to the request, it
interrupts itself and performs the service.
BIOS SETUP
MB820 User’s Manual 47
PNP/PCI Configurations
This option configures the PCI bus system. All PCI bus systems on the
system use INT#, thus all installed PCI cards must be set to this value.
Phoenix - AwardBIOS CMOS Setup Utility
PnP/PCI Configurations
PNP OS Install
No ITEM HELP
Reset Configuration Data
Disabled
Resources Controlled By
Auto (ESCD)
IRQ Resources
Press Enter
DMA Resources
Press Enter
PCI/VGA Palette Snoop
Disabled
INT Pin 1 Assignment
Auto
INT Pin 2 Assignment
Auto
INT Pin 3 Assignment
Auto
INT Pin 4 Assignment
Auto
INT Pin 5 Assignment
Auto
INT Pin 6 Assignment
Auto
INT Pin 7 Assignment
Auto
INT Pin 8 Assignment
Auto
Menu Level
Default is Disabled.
Select Enabled to reset
Extended System
Configuration Data
(ESCD) when you exit
Setup if you have
installed a new add-on
and the system
reconfiguration has
caused such a serious
conflict that the OS
cannot boot
PNP OS Install
Enable the PNP OS Install option if it is supported by the operating
system installed. The default value is No.
Reset Configuration Data
This field allows you to determine whether to reset the config uration
data or not. The default value is Disabled.
Resources Controlled by
This PnP BIOS can configure all of the boot and compatible devices
automatically with the use of a use a PnP operating system such as
Windows 95.
PCI/VGA Palette Snoop
Some non-standard VGA display cards may not show colors properly.
This field allows you to set whether or not MPEG ISA/VESA VGA
cards can work with PCI/VGA. When this field is enabled, a PCI/VGA
can work with an MPEG ISA/VESA VGA card. When this field is
disabled, a PCI/VGA cannot work with an MPEG ISA/VESA card.
BIOS SETUP
48 MB820 User’s Manual
PC Health Status
This section shows the parameters in determining the PC Health Status.
These parameters include temperatures, fan speeds and voltages.
Phoenix - AwardBIOS CMOS Setup Utility
PC Health Status
CPU Warning Temperature Disabled
ITEM HELP
System Temp.
CPU Temp
CPU FAN Speed (FAN1)
System FAN Speed (FAN3)
Chassis FAN Speed (FAN2)
Vcore (V)
Menu Level
+3.3V
+5V
+12V
-12V
VBAT
5VSB(V)
Shutdown Temperature Disabled
CPU Fan Failure Warning Disabled
Sys. FAN Failure Warning Disabled
Cha. FAN Failure Warning Disabled
CPU Warning Temperature
This field allows the user to set the temperature so that when the
temperature is reached, the system sounds a warning. This function can
help prevent damage to the system that is caused by overheating.
Temperatures/Fan Speeds/Voltages
These fields are the parameters of the hardware monitoring function
feature of the motherboard. The values are read-only values as
monitored by the system and show the PC health status.
Shutdown Temperature
This field allows the user to set the temperature by which the system
automatically shuts down once the threshold temperature is reached.
This function can help prevent damage to the system that is caused by
overheating.
CPU/System/Chassis Fan Failure Warning
When enabled, this field lets the system sounds an audible warning to
the user that the CPU fan or chassis fan has malfunctioned.
BIOS SETUP
MB820 User’s Manual 49
Frequency/Voltage Control
This section shows the user how to configure the processor frequency.
Phoenix - AwardBIOS CMOS Setup Utility
Frequency/Voltage Control
Auto Detect DIMM/PCI Clk
Disabled ITEM HELP
Spread Spectrum
Disabled
Menu Level
Auto Detect DIMM/PCI Clk
This field enables or disables the auto detection of the PCI clock.
Spread Spectrum
This field sets the value of the spread spectrum. The default setting is
Disabled. This field is for CE testing use only
.
BIOS SETUP
50 MB820 User’s Manual
Load Fail-Safe Defaults
This option allows you to load the troubleshooting default values
permanently stored in the BIOS ROM. These default settings are
non-optimal and disable all high-performance features.
Load Setup Defaults
This option allows you to load the default values to your system
configuration. These default settings are optimal and enable all high
performance features.
Set Supervisor/User Password
These two options set the system password. Supervisor Password sets a
password that will be used to protect the system and Setup utility. User
Password sets a password that will be used exclusively on the system. To
specify a password, highlight the type you want and press <Enter>. The
Enter Password: message prompts on the screen. Type the password, up
to eight characters in length, and press <Enter>. The system confirms
your password by asking you to type it again. After setting a password,
the screen automatically returns to the main screen.
To disable a password, just press the <Enter> key when you are
prompted to enter the password. A message will confirm the password to
be disabled. Once the password is disabled, the system will boot and you
can enter Setup freely.
Save & Exit Setup
This option allows you to determine whether or not to accept the
modifications. If you type “Y”, you will quit the setup utility and save all
changes into the CMOS memory. If you type “N”, you will return to
Setup utility.
Exit Without Saving
Select this option to exit the Setup utility without saving the changes you
have made in this session. Typing “Y” will quit the Setup utility without
saving the modifications. Typing “N” will return you to Setup utility.
DRIVERS INSTALLATION
MB820 User’s Manual 51
Drivers Installation
This section describes the installation procedures for software and
drivers under the Windows 98SE, Windows ME, Windows 2000 and
Windows XP. The software and drivers are included with the
motherboard. If you find the items missing, please contact the vendor
where you made the purchase. The contents of this section include the
following:
Intel® 875P Chipset Software Intallation Utility ...............52
Realtek AC97 Codec Audio Driver Installation................55
Intel® PRO LAN Drivers Installation ................................56
VGA Drivers Installation ..................................................57
IMPORTANT NOTE:
After installing your Windows operating system (Windows
98SE/ME/2000/XP), you must install first the Intel
®
Chipset Software
Installation Utility before proceeding with the drivers installation.
DRIVERS INSTALLATION
52 MB820 User’s Manual
Intel 875P Chipset Software Intallation Utility
The Intel
®
875P Chipset Drivers should be installed first before the
software drivers to enable Plug & Play INF support for Intel
®
chipset
components. Follow the instructions below to complete the installation
under Windows 98SE/ME/2000/XP.
1. Insert the CD that comes with the motherboard and the screen below
would appear. Click Intel Chipsets and then Intel(R) 875P Chipset
Drivers.
2. Click Intel(R) Chipset Software Intallation Utility.
[
DRIVERS INSTALLATION
MB820 User’s Manual 53
3. When the Welcome screen appears, click Next to continue.
4. Click Yes to accept the software license agreement and proceed with
the installation process.
DRIVERS INSTALLATION
54 MB820 User’s Manual
5. On Readme Information screen, click Next to continue the
installation.
6. The Setup process is now complete. Click Finish to restart the
computer and for changes to take effect. When the computer has
restarted, the system will be able to find some devices. Restart your
computer when prompted.
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MB820 User’s Manual 55
Realtek AC97 Codec Audio Driver Installation
Follow the steps below to install the Realtek AC97 Codec Audio
Drivers.
1. Insert the CD that comes with the motherboard and the screen below
would appear. Click Intel(R) Chipsets, then Intel(R) 875P Chipset
Family Drivers. Click Realtek AC97 Codec Audio Drivers to start
installation.
2. Click Finish to restart the computer and for changes to take effect. .
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56 MB820 User’s Manual
Intel PRO LAN Drivers Installation
The Intel
®
PRO LAN drivers support both Intel® PRO/100 and
PRO/1000 drivers. Follow the steps below to complete the installation.
1. Insert the CD that comes with the motherboard and the screen below
would appear. Click on LAN Card on the left side to make the LAN
drivers selection. Click on Intel(R) PRO LAN Drivers.
2. Click Install Software to continue.
3. When prompted, click Restart to restart the computer for new setti ngs
to take effect.
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MB820 User’s Manual 57
VGA Drivers Installation
To install the SMI VGA drivers (SMI SM712), follow the steps below to
proceed with the installation.
1. Insert the CD that comes with the MB820 and the screen below would
appear. Click VGA Card on the left side.
2. On the right side of the screen, click on SMI712 VGA Driver.
DRIVERS INSTALLATION
58 MB820 User’s Manual
3. A Welcome screen would then appear. Click Next to start copying of
files needed for the driver installation.
4. After file copying is done, restart the computer when prompted for
changes to take effect.
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