MB875
Socket 479 Pentium® M with
Intel® 852GM Chipset
Custom Motherboard
for 1U Rackmount
USER’S MANUAL
Version 1.0
ii
MB875 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 M 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.
MB875 User’s Manual iii
Table of Contents
Introduction ....................................................... 1
Product Description ............................................................. 1
Checklist .............................................................................. 2
MB875 Specifications ......................................................... 3
Board Dimensions ............................................................... 4
Installations ....................................................... 5
Installing the CPU ............................................................... 6
Installing the Memory ......................................................... 7
Setting the Jumpers ............................................................. 8
Connectors on MB875 ...................................................... 13
BIOS Setup ....................................................... 21
Drivers Installation ...................................... 44
Intel Chipset Software Intallation Utility .......................... 45
VGA Drivers Installation .................................................. 47
AC97 Codec Audio Driver Installation ............................. 49
Intel PRO LAN Drivers Installation .................................. 50
SATA Drivers Installation ................................................ 51
Appendix ........................................................... 54
A. I/O Port Address Map ................................................... 54
B. Interrupt Request Lines (IRQ) ...................................... 55
C. Watchdog Timer Configuration .................................... 56
D. Digital I/O Sample Code .............................................. 60
The MB875 Motherboard
The MB875 Edge Connectors
iv
MB875 User’s Manual
INTRODUCTION
MB875 User’s Manual 1
Introduction
Product Description
The MB875 is a versatile motherboard with four Gigabit Ethernets that is
designed for SOHO network security applications. Optimized for network
performance, this scalable platform is based on the Intel(R) 852GM chipset
and supports Intel(R) Pentium(R) M / Celeron(R) M processors of up to
2.0GHz speeds with front size bus of 400MHz. System memory can support
up to 2GB of DDR266 DIMM modules.
The MB875 uses the highly efficient Intel(R) 82541PI Ethernet providing
robust Gigabit networking with enhanced power management and consumes
less than 1.0W of power at Gigabit speeds. It supports intensive networking
communication required by firewall or VPN and offers bypass function
support on LAN1 and LAN2 to ensure high network availability.
To provide the best utilization and performance, the platform provides a
number storage interfaces including two IDE ports, two SATA ports, four
USB ports and a CompactFlash socket. One PCI 32-bit/33MHz Golden
Finger and one Mini-PCI slot are available for expansion. Furthermore, it
features status / alarm LED and a factory-default button that can be flexibly
configured to create features for ISVs. The MB875 motherboards are now
available to purchase.
MB875 FEATURES
• Supports Pentium(R) M / Celeron(R) M processors
• Up to 2.0GHz, 400MHz FSB
• DDR DIMM x 2, Max. 2GB
• Integrated VGA for CRT, shared memory
• Integrated four Gigabit Ethernet
• 4 x COM, 4 x USB 2.0 ports, 2 x SATA, CF socket
• 1 x PCI, 1 x Mini PCI slot, Watchdog timer
INTRODUCTION
2
MB875 User’s Manual
Checklist
Your MB875 package should include the items listed below.
• The MB875 Pentium
®
M Mini-ITX motherboard
• This User’s Manual
• 1 CD containing chipset drivers and flash memory utility
• Option Cable
VGA4K
USB2K-4
PK1-2K
PK1K
PS2D
INTRODUCTION
MB875 User’s Manual 3
MB875 Specifications
[
CPU Type
Micro-FCPGA Intel® Pentium® M processor
System Speed
Up to 1.8GHz
CPU Frequency
400 MHz
CPU Socket
Socket 479
Chipset
852GM chipset
BIOS
Award BIOS; support ACPI function
Cache
1MB Level 2 (CPU integrated)
VGA
Intel® 82852GM built-in Intel® extreme Graphics 2
64MB shared with system
LAN
Intel® 82541PI Gigabit LAN controller, LAN1 & LAN2
Bypass
Memory Type
Two DDR DIMM socket, supports up to 2GB DDR 266/333
SDRAM
LPC I/O
Winbond W83627HG: COM1 (RS-232), COM2 (RS-232),
Hardware monitoring
Fintek 81216: COM3/4 (RS-232)
RTC/CMOS
Intel® ICH4 built-in RTC with onboard lithium battery
Keyboard/Mouse
PS/2 Keyboard/Mouse connectors
IDE Interface
Two channels; supports Ultra DMA 33/66/100
USB
4 ports, USB 2.0
Watchdog Timer
256 segments (0, 1, 2,.. 255 sec/min)
Edge Connectors
DB9 (male) x1 for COM1 (console port)
Dual USB stack connector x1 for USB 0, 1
RJ45 (w/ dual status LED) x 4
GPInput Switch x 1
Power LED x 1 (Green x 1 )
HDD Access LED x 1 (Red x 1 )
GPO LED 1/2 x 2 (Green x 1, Red x 1 )
On Board
Pin-Header /
Connectors
SATA connector x2 for SATA HDD
40 pins, 2.54mm, box-header x1 for IDE1
44 pins, 2.0mm, box-header x1 for IDE2
Compact flash type II socket x1 for CF on IDE2 bus
10 pins, 2.54mm, pin-header x1 for PS/2 KB/mouse
2 pins, 2.54mm, pin-header x 1 for Reset button.
Power Connector
ATX power connector
Expansion Slots
PCI (33MHz/32-bit) slot x1
Mini PCI x 1
Board size
TBD
INTRODUCTION
Board Dimensions
4
MB875 User’s Manual
INSTALLATIONS
MB875 User’s Manual 5
Installations
This section provides information on how to use the jumpers and
connectors on the MB875 in order to set up a workable system. The
topics covered are:
Installing the CPU ................................................................................. 6
Installing the Memory ........................................................................... 7
Setting the Jumpers ................................................................................ 8
Connectors on MB875 ......................................................................... 13
INSTALLATIONS
Installing the CPU
The MB875 board supports a Socket 479 processor socket for Intel
®
Pentium
®
M or Celeron® M processors.
The processor socket comes with a screw to secure the processor. As
shown in the left picture below, loosen the screw first before inserting
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, fasten the
screw. Refer to the figures below.
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.
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MB875 User’s Manual
INSTALLATIONS
Installing the Memory
The MB875 board supports one DDR memory sockets for a maximum
total memory of 2GB in DDR memory type. The memory module
capacities supported are 128MB, 256MB, 512MB and 1GB. The
following table lists the supported DDR DIMM configurations. Intel
®
852GM supports configurations defined in the JEDEC DDR DIMM
specification only. Non-JEDEC standard DIMMs such as double-sided
x16 DDR SDRAM DIMMs are not supported.
Installing and Removing Memory Modules
To install the DDR modules, locate the memory slot on the board and
perform the following steps:
1. Hold the DDR module so that the key of the DDR module align with
those on the memory slot.
2. Gently push the DDR module in an upright position until the clips of
the slot close to hold the DDR module in place when the DDR module
touches the bottom of the slot.
3. To remove the DDR module, press the clips with both hands.
LockLock
Lock
Lock
DDR Module
MB875 User’s Manual 7
INSTALLATIONS
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MB875 User’s Manual
Setting the Jumpers
Jumpers are used on MB875 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 MB875 and their respective functions.
Jumper Locations on MB875 .......................................................... 9
JP1: Clear CMOS Contents .......................................................... 10
JP2: Watchdog Timer & LAN1/LAN2 Bypass Settings .............. 10
JP4: Compact Flash Slave/Master ................................................ 10
JP5: Processor Operating Frequency ............................................ 10
JP7: Power ON Setting ................................................................. 12
INSTALLATIONS
Jumper Locations on MB875
Jumpers on MB875 ........................................................................... Page
JP1: Clear CMOS Contents ................................................................. 10
JP2: Watchdog Timer & LAN1/LAN2 Bypass Settings ..................... 10
JP4: Compact Flash Slave/Master ....................................................... 10
JP5: Processor Operating Frequency ................................................... 10
JP7: Power ON Setting ........................................................................ 12
MB875 User’s Manual 9
INSTALLATIONS
JP1: Clear CMOS Contents
Use JP1 to clear the CMOS contents. Note that the ATX-power
connector should be disconnected from the board before clearing
CMOS.
JP1 Setting Function
Pin 1-2
Short/Closed
Normal
Pin 2-3
Short/Closed
Clear CMOS
JP2: Watchdog Timer & LAN1/LAN2 Bypass Settings
JP2 Setting Function
Pin 1-3 & 2-4
Short
Ethernet default: Eth0 & Eth1 None Bypass.
System will bypass LANs upon the timeout
of Watchdog timer
Pin 1/2/3/4
Open
Ethernet default: Eth0 & Eth1 Bypass mode.
System will not bypass LANs upon the
timeout of Watchdog timer
Pin 1-2 & 3-4
Short
System will reboot upon the timeout of
Watchdog timer. (Default)
JP4: Compact Flash Slave/Master
JP4 Compact Flash
Open
Slave
Close
Master
JP5: Processor Operating Frequency
JP5
CPU Operating
Frequency
Open
133MHz
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MB875 User’s Manual
INSTALLATIONS
Close
100MHz (default)
MB875 User’s Manual 11
INSTALLATIONS
JP7: Power ON Setting
JP7 Setting Function
Pin 1-2
Short/Closed
Power on by syste
m
button
Pin 2-3
Short/Closed
Power on by power
supply AC on
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MB875 User’s Manual
INSTALLATIONS
MB875 User’s Manual 13
Connectors on MB875
The connectors on MB875 allows you to connect external devices such
as keyboard, floppy disk drives, hard disk drives, printers, etc. The
following table lists the connectors on MB875 and their respective
functions.
Connector Locations on MB875 ......................................................... 14
J1: VGA CRT Connector .................................................................... 15
J2: COM2 Serial Port .......................................................................... 15
J4: USB Connector .............................................................................. 15
J5: SATA HDD Connector .................................................................. 16
J6: SATA HDD Connector .................................................................. 16
J7: COM3 Serial Port .......................................................................... 16
J8: COM4 Serial Port .......................................................................... 17
J9: Case Open Detect Header .............................................................. 17
J10: ATX Power Connector ................................................................ 17
J11: Keyboard / Mouse Connector ...................................................... 18
J12: Power On & Reset Headers ......................................................... 18
SW1: Digital I/O Input Pin Switch ...................................................... 18
LED1: Digital IO Output LED ............................................................ 18
LED2: HDD / Power LED .................................................................. 18
CN2, CN3, CN4, CN5: LAN Connectors ........................................... 18
CN6: USB Connector .......................................................................... 18
CN7: COM1 Serial Port ...................................................................... 19
FAN1: CPU Fan Power Connector ..................................................... 19
FAN2/FAN3: System Fan Power Connector ...................................... 19
CN8: Compact Flash Connector .......................................................... 19
IDE1, IDE2: Primary and Secondary IDE Connectors ....................... 20
INSTALLATIONS
Connector Locations on MB875
Connectors on MB875 ..................................................................... Page
J1: VGA CRT Connector ..................................................................... 15
J2: COM2 Serial Port ........................................................................... 15
J4: USB Connector .............................................................................. 15
J5: SATA HDD Connector .................................................................. 16
J6: SATA HDD Connector .................................................................. 16
J7: COM3 Serial Port ........................................................................... 16
J8: COM4 Serial Port ........................................................................... 17
J9: Case Open Detect Header .............................................................. 17
J10: ATX Power Connector ................................................................. 17
J11: Keyboard / Mouse Connector ...................................................... 18
J12: Power On & Reset Headers .......................................................... 18
SW1: Digital I/O Input Pin Switch ...................................................... 18
LED1: Digital IO Output LED ............................................................ 18
LED2: HDD / Power LED ................................................................... 18
CN2, CN3, CN4, CN5: LAN Connectors ............................................ 18
CN6: USB Connector .......................................................................... 18
CN7: COM1 Serial Port ....................................................................... 19
FAN1: CPU Fan Power Connector ...................................................... 19
FAN2/FAN3: System Fan Power Connector ....................................... 19
CN8: Compact Flash Connector .......................................................... 19
IDE1, IDE2: Primary and Secondary IDE Connectors ........................ 20
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MB875 User’s Manual
INSTALLATIONS
J1: VGA CRT Connector
Signal Name Pin Pin Signal Name
R 1 2 +5V
G 3 4 GND
B 5 6 NC
NC 7 8 SPD1
GND 9 10 Hsync
GND 11 12 Vsync
GND 13 14 SPCLK
GND 15
J2: COM2 Serial Port
Pin # Signal Name (RS-232)
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 Ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 RI, Ring indicator
10 No Connect.
J4: USB Connector
Signal Name Pin # Pin # Signal Name
Vcc 1 5 Ground
USB2- 2 6 USB3+
USB2+ 3 7 USB3Ground 4 8 Vcc
MB875 User’s Manual 15
INSTALLATIONS
J5: SATA HDD Connector
Pin # Signal Name
1 Ground
2 TX+
3 TX4 Ground
5 RX6 RX+
7 Ground
J6: SATA HDD Connector
Pin # Signal Name
1 Ground
2 TX+
3 TX4 Ground
5 RX6 RX+
7 Ground
J7: COM3 Serial Port
Pin # Signal Name (RS-232)
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 Ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 RI, Ring indicator
10 No Connect.
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MB875 User’s Manual
INSTALLATIONS
J8: COM4 Serial Port
Pin # Signal Name (RS-232)
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 Ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 RI, Ring indicator
10 No Connect.
J9: Case Open Detect Header
Pin # Signal Name
1 Case Open Detect
2 Ground
J10: ATX Power Connector
11 1
20 10
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
MB875 User’s Manual 17
INSTALLATIONS
J11: Keyboard / Mouse Connector
J11 a 10-pin header connector, has functions for both keyboard and
mouse. The following table shows the pin assignm ents of this connector.
Signal Name Pin # Pin # Signal Name
Protect pin 10 5 N.C.
KB clock 9 4 Mouse clock
KB data 8 3 Mouse data
Vcc 7 2 Vcc
Ground 6 1 Ground
J12: Power On & Reset Headers
Pin # Signal Name
1 PS_ON#
2 Ground
Pin # Signal Name
3 RESET#
4 Ground
SW1: Digital I/O Input Pin Switch
LED1: Digital IO Output LED
LED2: HDD / Power LED
Red: HDD LED
Green: Power LED
CN2, CN3, CN4, CN5: LAN Connectors
CN2: LAN1
CN3: LAN2
CN4: LAN3
CN5: LAN4
CN6: USB Connector
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MB875 User’s Manual
INSTALLATIONS
CN7: COM1 Serial Port
CN7 (COM1) is a DB-9 connector.
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
FAN1: CPU Fan Power Connector
FAN1 is a 3-pin header for CPU fan power. The fan must be a 12V
(500mA) fan.
Pin # Signal Name
1 Ground
2 +12V
3 Rotation detection
FAN2/FAN3: System Fan Power Connector
FAN2 is a 3-pin header for system fan power. The fan must be a 12V
(500mA) fan.
Pin # Signal Name
1 Ground
2 +12V
3 Rotation detection
CN8: Compact Flash Connector
CN8 uses the IDE2 channel.
MB875 User’s Manual 19
INSTALLATIONS
IDE1, IDE2: Primary and Secondary IDE Connectors
IDE1
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
p
in
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 connec
t
Address 1 33 34 No connec
t
Address 0 35 36 Address 2
Chip select 0 37 38 Chip select 1
Activit
y
39 40 Ground
IDE2
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 Key
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
Activity 39 40 Ground
Vcc 41 42 Vcc
Ground 43 44 N.C.
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MB875 User’s Manual
BIOS SETUP
MB875 User’s Manual 21
BIOS Setup
This chapter describes the different settings available in the Award
BIOS that comes with the board. The topics covered in this chapter are
as follows:
BIOS Introduction ........................................................................ 22
BIOS Setup ................................................................................... 22
Standard CMOS Setup ................................................................. 24
Advanced BIOS Features ............................................................. 27
Advanced Chipset Features .......................................................... 31
Integrated Peripherals ................................................................... 34
Power Management Setup ............................................................ 37
PNP/PCI Configurations .............................................................. 40
PC Health Status ........................................................................... 41
Frequency/Voltage Control .......................................................... 42
Load Fail-Safe Defaults ................................................................ 43
Load Optimized Defaults ............................................................. 43
Set Supervisor/User Password ...................................................... 43
Save & Exit Setup ........................................................................ 43
Exit Without Saving ..................................................................... 43
BIOS SETUP
22
MB875 User’s Manual
BIOS Introduction
The Award BIOS (Basic Input/Output System) installed in your
computer system’s ROM supports Intel processors. The BIOS provides
critical low-level support for a standard devi ce 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 p ressing the <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
MB875 User’s Manual 23
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
24
MB875 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) Wed, Apr 28, 2004 Item Help
Time (hh:mm:ss) 00 : 00 : 00 Menu Level >
IDE Primary Master None Change the day, month,
Year and century IDE Primary Slave None
IDE Secondary Master None
IDE Secondary Slave None
Video EGA/VGA
Halt On No 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 : 1999 to 2099
To set the date, highlight the “Date” field and use the PageUp/
PageDown or +/- keys to set the current time.
BIOS SETUP
MB875 User’s Manual 25
Time
The time format is:
Hour : 00 to 23
Minute : 00 to 59
Second : 00 to 59
To set the time, highlight the “Time” fi eld 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
LANDING ZONE : Landing zone
SECTOR : Number of sectors
The Access Mode selections are as follows:
CHS (HD < 528MB)
LBA (HD > 528MB and supports
Logical Block Addressing)
Large (for MS-DOS only)
Auto
Remarks: The main board supports two serial ATA ports and are
represented in this setting as IDE Channel 2 / 3 Master.
BIOS SETUP
26
MB875 User’s Manual
Video
This field selects the ty pe of vi deo displ ay card inst alle d in your sy stem .
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
MB875 User’s Manual 27
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
CPU Feature Press Enter ITEM HELP
Hark Disk Boot Priority Press Enter Menu Level >
USB Hard Disk Boot First Disabled
Virus Warning Disabled
CPU L1 and L2 Cache Enabled
Quick Power On Self Test Enabled
First Boot Device USB-FDD
Second Boot Device Hard Disk
Third Boot Device LAN
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
APIC Mode Enabled
MPS Version Control for OS 1.4
OS Select For DRAM>64MB Non-OS2
Console Redirection Enabled
Baud Rate 19200
Agent Connect via NULL
Agent Wait Time (min) 1
Agent After Boot Disabled
Report No FDD For WIN 95 Yes
Small Logo (EPA) Show Disabled
CPU Feature
Press Enter to configure the settings relevant to CPU Feature.
Hard Disk Boot Priority
Press Enter to configure the settings.
USB Hard Disk Boot First
By default, this field is disabled.
Virus Warning
If this option is enabled, an alarm message will be displayed when trying
to write on the boot sector or on the partition table on the disk, which is
typical of the virus.
BIOS SETUP
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MB875 User’s Manual
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. By default, these items are
Enabled.
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.
First/Second/Third Boot Device
These fields determine the drive that the system searches first for an
operating system.
Boot Other Device
These fields allow the system to search for an OS from other devices
other than the ones selected in the First/Second/Third Boot Device.
Swap Floppy Drive
This item allows you to determ ine 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.
BIOS SETUP
MB875 User’s Manual 29
Typematic Rate Setting
When disabled, continually holdin g 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.
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 t he
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 expandability. 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.
BIOS SETUP
30
MB875 User’s Manual
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 requi red 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 system .
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 Disabled.
BIOS SETUP
MB875 User’s Manual 31
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 6
DRAM RAS# to CAS# Delay 3
DRAM RAS# Precharge 3
DRAM Data Integrity Mode Non ECC
MGM Core Frequency Auto Max 266MHz
System BIOS Cacheable Enabled
Video BIOS Cacheable Disabled
Memory Hole at 15M-16M Disabled
Delayed Transaction Enabled
Delay Prior to Thermal 16 Min
AGP Aperture Size (MB) 128
** On-Chip VGA Setting **
On-Chip VGA Enabled
On-Chip Frame Buffer Size 8MB
Boot Display CRT
DRAM Timing Selectable
This option refers to the method by whi ch the DRAM ti ming 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.
BIOS SETUP
32
MB875 User’s Manual
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.
DRAM Data Integrity Mode
Select ECC if your mem ory m odul e supports it . The m em ory control ler
will detect and correct single-bit soft memory errors. The memory
controller will also be able to detect double-bit errors though it will not
be able to correct them. This provides increased data integr ity and
system stability.
MGM Core Frequency
This field sets the frequency of the DRAM memory installed. The
default setting is Auto Max 266MHz.
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.
Delayed Transaction
The chipset has an embedded 32-bit posted writ e buffer to support delay
transactions cycles. Select Enabled to support compliance with PCI
specification version 2.1.
Delay Prior to Thermal
This field activates the C PU therm al functi on after the syst ems boot s for
the set number of minutes. The options are 16Min and 64Min.
BIOS SETUP
MB875 User’s Manual 33
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.
On-Chip VGA
The default setting is Enabled.
On-Chip Frame Buffer Size
The default setting is 8MB. The options available include 1MB, 4MB,
8MB and 16MB.
BIOS SETUP
34
MB875 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
OnChip IDE Device
Press Enter ITEM HELP
Onboard Device
Press Enter Menu Level >
SuperIO Device
Press Enter
Second IO Device
Press Enter
Onboard LAN Boot ROM
Disabled
Phoenix - AwardBIOS CMOS Setup Utility
OnChip IDE Device
On-Chip Primary PCI IDE
Enabled ITEM HELP
IDE Primary Master PIO
Auto Menu Level >
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
IDE HDD Block Mode
Enabled
Phoenix - AwardBIOS CMOS Setup Utility
Onboard Device
Onboard SATA Chip Mode
SATA Mode ITEM HELP
USB Controller
Enabled Menu Level >
USB 2.0 Controller
Enabled
USB Keyboard Support
Disabled
USB Mouse Support
Disabled
Init Display First PCI Slot
Phoenix - AwardBIOS CMOS Setup Utility
SuperIO Device
Onboard FDC Controller Disabled
ITEM HELP
Onboard Serial Port 1 3F8/IRQ4
Menu Level >
Onboard Serial Port 2 2F8/IRQ3
PWRON After PWR Fail On
Phoenix - AwardBIOS CMOS Setup Utility
Second IO Device
Onboard Serial Port 3 3E8
ITEM HELP
Serial Port 3 Use IRQ IRQ11
Menu Level >
Onboard Serial Port 4 2E8
Serial Port 4 Use IRQ IRQ10
BIOS SETUP
MB875 User’s Manual 35
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 (Programm ed Input/Output) allows the B IOS 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.
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.
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 Enabled. In order to use USB 2.0, necessary OS drivers must be
installed first. Please update your system to Windows 2000 SP4 or
Windows XP SP1.
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.
BIOS SETUP
36
MB875 User’s Manual
Init Display First
The default setting is PCI Card.
PWRON After PWR Fail
The setting configures the system power on status when power is
restored to the system after a power failure occurrence. The default
setting is On.
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 Ports
These fields allow you to select the onboard seri al 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 3E8/IRQ11
Serial Port 4 2E8/IRQ10
BIOS SETUP
MB875 User’s Manual 37
Power Management Setup
The Power Management Setup allows you to save energy of y our system
effectively.
Phoenix - AwardBIOS CMOS Setup Utility
Power Management Setup
Power-Supply Type
ATX ITEM HELP
ACPI Function
Enabled
Power Management
User Define Menu Level >
Video Off Method
DPMS
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
Resume by Alarm
Disabled
Date (of Month) Alarm 0
Time (hh:mm:ss) Alarm 0 : 0 : 0
** Reload Global Timer Events **
Primary IDE 0
Disabled
Primary IDE 1
Disabled
Secondary IDE 0
Disabled
Secondary IDE 1
Disabled
FDD, COM, LPT Port
Disabled
PCI PIRQ[A-D] #
Disabled
Power Supply Type
Use this field to select the power supply type used in the system. The
default setting is ATX.
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
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MB875 User’s Manual
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 m ode, 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 Card
By default, this field is disabled.
BIOS SETUP
MB875 User’s Manual 39
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.
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
40
MB875 User’s Manual
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
Reset Configuration Data
Disabled ITEM HELP
Menu Level
Select Yes if you are
using a Plug and Play
capable operating
system Select No if
you need the BIOS to
configure non-boot
devices
Resources Controlled By
Auto (ESCD)
IRQ Resources
Press Enter
PCI/VGA Palette Snoop
Disabled
Reset Configuration Data
This field allows you to determine whether to reset the configuration
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
MB875 User’s Manual 41
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. 45°C/113°F
Menu Level >
CPU Temp 52°C/125°F
CPU FAN Speed 5400 RPM
FAN3 Speed 5463 RPM
FAN2 Speed 5388 RPM
Vcore(V) 1.02 V
Vtt 1.32 V
Vcc3 3.32 V
+5V 4.94 V
+12V 12.03 V
-12V -12.0 V
VBAT 3.21 V
5VSB(V) 4.96 V
Shutdown Temperature 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/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.
Smart Fan Temperature
This field enables or disables the smart fan feature. At a certain
temperature, the fan starts turning. Once the temperature drops to a
certain level, it stops turning again.
BIOS SETUP
42
MB875 User’s Manual
Frequency/Voltage Control
This section shows the user how to configure the processor frequency.
Phoenix - AwardBIOS CMOS Setup Utility
Frequency/Voltage Control
Auto Detect PCI Clk
Disabled ITEM HELP
Spread Spectrum Modulated
Disabled Menu Level >
Auto Detect PCI Clk
This field enables or disables the auto detection of the PCI clock.
Spread Spectrum Modulated
This field sets the value of the spread spectrum. The default setting is
Disabled. This field is for CE testing use only
.
BIOS SETUP
MB875 User’s Manual 43
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 Optimized 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 Password
These two options set the system password. Supervisor Password sets a
password that will be used to protect the system and Setup u tility. 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 prompt s on t he screen. Type t he 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 Setu p utility.
DRIVER INSTALLATION
44
MB875 User’s Manual
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 Chipset Software Intallation Utility錯誤! 尚未定義書籤。
VGA Drivers Installation ................ 錯誤! 尚未定義書籤。
AC97 Codec Audio Driver Installation錯誤! 尚未定義書籤。
Intel PRO LAN Drivers Installation 錯誤! 尚未定義書籤。
SATA Drivers Installation............... 錯誤! 尚未定義書籤。
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
Intel Chipset Software Intallation Utility
The Intel Chipset Drivers should be installed first before the software
drivers to enable Plug & Play INF support for Intel chipset com ponents.
Follow the instructions below to complete the installation under
Windows 98SE/ME/2000/XP.
1. Insert the CD that comes with the board. Click Intel Chipsets and then
Intel(R) 855/852GME Chipset Family Drivers.
2. Click Intel(R) Chipset Software Installation Utility.
MB875 User’s Manual 45
DRIVER INSTALLATION
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.
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.
46
MB875 User’s Manual
DRIVERS INSTALLATION
VGA Drivers Installation
To install the VGA drivers, follow the steps below to proceed with the
installation.
1. Insert the CD that comes with the motherboard. Click Intel Chipsets
and then Intel(R) 855/852GME Chipset Family Drivers.
2. Click Intel(R) 855/852GME Chipset Family Graphics Driver.
3. When the Welcome screen appears, click Next to continue.
MB875 User’s Manual 47
DRIVER INSTALLATION
4. Click Yes to to agree with the license agreement and continue the
installation.
5. Restart the computer as promted and for changes to take effect.
48
MB875 User’s Manual
DRIVERS INSTALLATION
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. Click Intel Chipsets
and then Intel(R) 855/852GME Chipset Family Drivers.
2. Click Realtek AC'97 Codec Audio Driver.
3. When the Welcome screen appears, click Next to continue.
4. Set up has finished installing Realtek AC’97 Audio on your computer.
Finish to restart the computer and for changes to take effect.
MB875 User’s Manual 49
DRIVER INSTALLATION
Intel PRO LAN Drivers Installation
Follow the steps below to complete the installation of the Intel PRO
LAN drivers.
1. Insert the CD that comes with the motherboard. Click LAN Card and
then Intel(R) PRO LAN Drivers.
2. Click Install Base Software to continue.
3. When prompted, please to restart the computer for new settings to take
effect.
50
MB875 User’s Manual
DRIVERS INSTALLATION
SATA Drivers Installation
To install the SATA drivers, follow the steps below to proceed with the
installation.
1. Insert the Windows operating system, go to the Device Manager.
Click the Mass Storage Controller.
MB875 User’s Manual 51
DRIVER INSTALLATION
2. In the Properties window, click Update Driver.
3. Once in the Welcome screen of the Hardware Update Wizard, select
“No, not this time” and click Next.
52
MB875 User’s Manual
DRIVERS INSTALLATION
4. Select “Install from a list or specific location (Advanced)“ and
click Next.
5. Click Browse to find the location of the drivers. Assuming D: is the
drive where the CD drivers is located, the path would be:
D:\Sata\SATA\SIL3512\Non-RAID. Click Next to continue
6. The installation process is now complete. Click Finish to close the
Hardware Update Wizard.
MB875 User’s Manual 53
APPENDIX
54
MB875 User’s Manual
Appendix
A. I/O Port Address Map
Each peripheral device in the system is assigned a set of I/O port
addresses which also becomes the identity of the device. The follo wing
table lists the I/O port addresses used.
Address Device Description
000h - 01Fh DMA Controller #1
020h - 03Fh Interrupt Controller #1
040h - 05Fh Timer
060h - 06Fh Keyboard Controller
070h - 07Fh Real Time Clock, NMI
080h - 09Fh DMA Page Register
0A0h - 0BFh Interrupt Controller #2
0C0h - 0DFh DMA Controller #2
0F0h Clear Math Coprocessor Busy Signal
0F1h Reset Math Coprocessor
1F0h - 1F7h IDE Interface
278 - 27F Parallel Port #2(LPT2)
2F8h - 2FFh Serial Port #2(COM2)
2B0 - 2DF Graphics adapter Controller
378h - 3FFh Parallel Port #1(LPT1)
360 - 36F Network Ports
3B0 - 3BF Monochrome & Printer adapter
3C0 - 3CF EGA adapter
3D0 - 3DF CGA adapter
3F0h - 3F7h Floppy Disk Controller
3F8h - 3FFh Serial Port #1(COM1)
APPENDIX
MB875 User’s Manual 55
B. Interrupt Request Lines (IRQ)
Peripheral devices use interrupt request lines to notify CPU for the
service required. The following tabl e shows the IRQ used by the devices
on board.
Level Function
IRQ0 System Timer Output
IRQ1 Keyboard
IRQ2 Interrupt Cascade
IRQ3 Serial Port #2
IRQ4 Serial Port #1
IRQ5 Reserved
IRQ6 Floppy Disk Controller
IRQ7 Parallel Port #1
IRQ8 Real Time Clock
IRQ9 Reserved
IRQ10 Reserved
IRQ11 Reserved
IRQ12 PS/2 Mouse
IRQ13 80287
IRQ14 Primary IDE
IRQ15 Secondary IDE
APPENDIX
56
MB875 User’s Manual
C. 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
APPENDIX
MB875 User’s Manual 57
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
;[]===============================================
APPENDIX
58
MB875 User’s Manual
; Name : Unlock_Chip
; IN : None
; OUT : None
;[]===============================================
Unlock_Chip Proc Near
Mov dx, 4Eh
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, 4Eh
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, 4Eh
mov al,cl
out dx,al
pop ax
inc dx
out dx,al
ret
Write_Reg Endp
;[]================================================
APPENDIX
MB875 User’s Manual 59
; Name : Read_Reg
; IN : CL - register index
; OUT : AL - Value to read
;[]=================================================
==
Read_Reg Proc Near
Mov al, cl
mov dx, 4Eh
out dx, al
inc dx
in al, dx
ret
Read_Reg Endp
;[]================================================
APPENDIX
60
MB875 User’s Manual
D. Digital I/O Sample Code
Filename: W627hf.h
//=====================================================================
//
// 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.
//
//=====================================================================
#ifndef __W627HF_H
#define __W627HF_H 1
//=====================================================================
#define W627_IOBASE 0x4E
//=====================================================================
#define W627HF_INDEX_PORT (W627_IOBASE+0)
#define W627HF_DATA_PORT (W627_IOBASE+1)
//=====================================================================
#define W627HF_REG_LD 0x07
//=====================================================================
#define W627HF_UNLOCK 0x87
#define W627HF_LOCK 0xAA
//=====================================================================
void Set_W627HF_LD( unsigned char);
void Set_W627HF_Reg( unsigned char, unsigned char);
unsigned char Get_W627HF_Reg( unsigned char);
//=====================================================================
#endif //__W627HF_H
APPENDIX
MB875 User’s Manual 61
Filename: W627hf.cpp
//=====================================================================
//
// 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.
//
//=====================================================================
#include "W627HF.H"
#include <dos.h>
//=====================================================================
void Unlock_W627HF (void);
void Lock_W627HF (void);
//=====================================================================
void Unlock_W627HF (void)
{
outportb(W627HF_INDEX_PORT, W627HF_UNLOCK);
outportb(W627HF_INDEX_PORT, W627HF_UNLOCK);
}
//=====================================================================
void Lock_W627HF (void)
{
outportb(W627HF_INDEX_PORT, W627HF_LOCK);
}
//=====================================================================
void Set_W627HF_LD( unsigned char LD)
{
Unlock_W627HF();
outportb(W627HF_INDEX_PORT, W627HF_REG_LD);
outportb(W627HF_DATA_PORT, LD);
Lock_W627HF();
}
//=====================================================================
void Set_W627HF_Reg( unsigned char REG, unsigned char DATA)
{
Unlock_W627HF();
outportb(W627HF_INDEX_PORT, REG);
outportb(W627HF_DATA_PORT, DATA);
Lock_W627HF();
}
//=====================================================================
unsigned char Get_W627HF_Reg( unsigned char REG)
{
unsigned char Result;
Unlock_W627HF();
outportb(W627HF_INDEX_PORT, REG);
Result = inportb(W627HF_DATA_PORT);
Lock_W627HF();
return Result;
}
//=====================================================================
File of the Main.cpp
APPENDIX
62
MB875 User’s Manual
//=====================================================================
// 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.
//=====================================================================
#include <dos.h>
#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include "W627HF.H"
//=====================================================================
void ClrKbBuf(void);
int main (int argc, char *argv[]);
//=====================================================================
int main (int argc, char *argv[])
{
unsigned char ucDO = 0; //data for digital output
unsigned char ucDI; //data for digital input
unsigned char ucBuf;
Set_W627HF_LD( 0x07); //switch to logic device 7
Set_W627HF_Reg(0xF1, 0x00); //clear
ucDI = Get_W627HF_Reg(0xF1) & 0x0F;
ClrKbBuf();
while(1)
{
ucDO++;
Set_W627HF_Reg(0xF1, ((ucDO & 0x0F) << 4));
ucBuf = Get_W627HF_Reg(0xF1) & 0x0F;
if (ucBuf != ucDI)
{
ucDI = ucBuf;
printf("Digital I/O Input Changed. Current Data is 0x%X\n",ucDI);
}
if (kbhit())
{
getch();
break;
}
delay(500);
}
return 0;
}
//=====================================================================
void ClrKbBuf(void)
{
while(kbhit())
{ getch(); }
}
//---------------------------------------------------------------------------
APPENDIX
MB875 User’s Manual 63
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