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.
A. I/O Port Address Map...................................................55
B. Interrupt Request Lines (IRQ)......................................56
MB893 User’s Manual iii
The MB893 Server Motherboard
iv
MB893 User’s Manual
Introduction
Checklist
Your MB893 Pentium
listed below:
• The MB893 motherboard
• This User’s Manual
• 1 IDE cable (40 pin 2.54mm) (optional)
• 1 IDE cable (44 pin 2.0mm) (optional)
• 2 SATA cable (optional)
• ID370 front side bridge board (optional)
• IP320 backplane bridge board (optional)
• 1 CD containing the following: (optional)
• Chipset Drivers
• Flash Memory Utility
®
4 motherboard package should include the items
INTRODUCTION
MB893 User’s Manual 1
INSTALLATIONS
Product Description
The MB893 LGA 775 Pentium
i915GV chipset that can utilize a single LGA775 processor of up to
3.8GHz or higher and supports FSB frequency of 533/800MHz
(133MHz, and 200MHz HCLK respectively).
The i915GV chipset is designed for use with the Pentium
with 1M Level 2 (CPU integrated) cache. The integrated MCH
component provides the CPU interface, DDR interface and Hub
Interface.
Four DDR memory sockets supports DDR 400/333 SDRAM DIMM
modules of up to 4GB in capacity.
The board is designed with four Marvell 88E8053 PCI Express Gigabit
LAN single controllers and two Intel
controllers. ICH6 supports only one primary IDE interface for UDMA
33/66/100 .Two Serial ATA connectors offer 1.5 Gigabits/sec data
throughput speed - faster than the most advanced parallel ATA.
On board expansion is provided by one Mini PCI socket. Additional
expansion is provided by two PCI slot if the board is used with the IP320
backplane bridge board. Other advanced features include two USB 2.0
ports…etc. Dimensions of the board are 12.6” by 7.2”.
®
4 motherboard incorporates the Intel®
®
4 processor
®
82541PI PCI Gigabit LAN single
2
MB893 User’s Manual
INTRODUCTION
Specifications
Product Name MB893
CPU Support Intel® Pentium® 4
CPU Voltage 0.8375V~1.6V (VRD 10.1)
System Speed
CPU Operating
Frequency
Green /APM APM1.2
CPU Socket LGA 775
Chipset
BIOS Award BIOS; Supports ACPI
Cache 1M Level 2 (CPU integrated)
VGA Grantsdale built-in, supports CRT by 2x6 pin header
Gigabit LAN
Memory Type
LPC I/O W83627HF: COM1, 2(RS232),
Secondary Super I/O Fintek F81216, supports COM3
RTC/CMOS Built in ICH6
Battery Lithium battery
IDE
Serial ATA Connector Two SATA ports
RJ45 Connectors Six RJ-45
USB Connectors ICH6 built in USB Version 2.0, support 4 ports
COM Connectors 3 ports (D-type CN. x 1 port & pin header x 2 port)
Power Connector ATX 24-pin
Expansion Slots
Backplane Bridge Board
Front Side Bridge Board
LAN bypass Function PCI Express Gigabit CN7, 10 RJ45 support Relay
Watchdog Timer Supports 256 segments (0,1,2…255. sec/min)
System Voltages +5V, +12V, -12V, 5VSB, -5V, 3.3V
Hardware Monitoring Voltage, Temperature, Smart fan
Board Size 12.6” x 7.2”(318 mm x 183mm)
Intel 82541 Gigabit controllers with RJ-45 interface
x 2 (PCI-32)
Marvell 8053 Gigabit controllers with RJ-45 interface
x 4 (PCI Express x 1)
CN7 &CN10 LAN Port support hardware by-pass
Dual Channel memory architecture
4 x 184-pin DIMM sockets support
unbufferred non-ECC 400/333 MHz DDR
memory modules. M a x. 4GB DDR 333/400
The ICH6 supports only one primary IDE interface
and can be either IDE1 (40-pin/2.5mm pitch) or IDE2
(44-pin/2.0mm pitch)
(D-type CN. x 2 port & pin header x 2 port)
1 x Mini PCI socket
With PCI BUS Gold finger (PICMG REV: 2.0 Spec.)
connect to Backplane bridge board IP320
32bit/33MHz PCI-32 slots x 2
With 40 pin 2mm connector to connect ID370
Front side bridge board
Switch by pass function.
MB893 User’s Manual 3
INSTALLATIONS
Board Dimensions
4
MB893 User’s Manual
INSTALLATIONS
Installations
This section provides information on how to use the jumpers and
connectors on the MB893 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 MB893......................................................................... 12
The MB893 motherboard supports an LGA 775 processor socket for
Intel® Pentium® 4 processors.
The LGA 775 processor socket comes with a lever to secure the
processor. Refer to the pictures below, from left to right, on how to place
the processor into the CPU socket. Please note that the cover of the
LGA775 socket must always be installed during transport to avoid
damage to the socket.
6
MB893 User’s Manual
INSTALLATIONS
ATX Power Installation
The system power is provided to the motherboard with the ATX1 and
ATX_12V1 power connectors. ATX1 is a 24-pin power connector and
ATX_12V1 is an 8-pin 12V power connector.
Note: The power supply 5VSB voltage must be at least 2A.
Installing the Memory
The MB893 motherboard supports four DDR memory sockets for a
maximum total memory of 4GB in DDR memory type. It supports
DDR333 when installed with CPUs that have clock speeds of 533MHz.
It supports DDR400 when installed with CPUs that have clock speeds of
800MHz. The board provides dual channel functionality for its DIMM
slots. DIMM1, 2 is for one channel and DIMM3, 4 is for another
channel.
Basically, the system memory interface has the following features:
Supports two 64-bit wide DDR data channels
Available bandwidth of up to 3.2GB/s (DDR400) for single-channel
mode and 6.4GB/s (DDR400) in dual-channel mode
Supports 128Mb, 256Mb, 512Mb and 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)
MB893 User’s Manual 7
INSTALLATIONS
Setting the Jumpers
Jumpers are used on MB893 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 MB893 and their respective functions.
Jumper Locations on MB893..........................................................9
Jumper Locations on MB893 ...........................................................Page
c JP2: Compact Flash Master/Slave Select........................................ 10
d JP3: Clear CMOS Contents............................................................. 10
e JP4: CN7 & CN10 LAN By-pass Function Setting........................ 10
f JP5: COM2 (J6) Tx/Rx Signal Setting (Reserved)......................... 10
g JP6: Case Open Connector (Reserved)........................................... 11
h JP7: IDE1, IDE2 UDMA Cable Detect Setting.............................. 11
MB893 User’s Manual 9
INSTALLATIONS
g
JP2: Compact Flash Master/Slave Select
JP2 Setting Compact Flash
OpenSlave
ClosedMaster
JP3: Clear CMOS Contents
JP3 Setting Function
Pin 1-2
Short/Closed
Pin 2-3
Short/Closed
Normal
Clear CMOS
JP4: CN7 & CN10 LAN By-pass Function Setting
[
JP4 Setting Function
Pin 1-2&3-4
OPEN
Pin 1-2&3-4
Short/Closed
(Default)
System will bypass
LANs upon the
timeout of watchdo
timer
System will
reboot upon the
timeout of
watchdog timer.
JP5: COM2 (J6) Tx/Rx Signal Setting (Reserved)
JP5 Setting COM2 (J6)
Pin 1-3&2-4
Short/Closed
TTL
Pin 3-5&4-6
Short/Closed
(Default)
Important Note: Should the two jumper clips or the jumper itself (JP5) be
missing, this means that the default setting is fixed as RS232.
10
MB893 User’s Manual
RS232
JP6: Case Open Connector (Reserved)
JP7: IDE1, IDE2 UDMA Cable Detect Setting
JP7 Setting Function
Pin 1-2
(Default)
Pin 2-3
Short/Closed
Short/Closed
UDMA by cable
UDMA33 Only
INSTALLATIONS
detect
MB893 User’s Manual 11
INSTALLATIONS
[
Connectors on MB893
The connectors on MB893 allows you to connect external devices such
as keyboard, floppy disk drives, hard disk drives, printers, etc. The
following table lists the connectors on MB893 and their respective
functions.
Connector Locations on MB893 .......................................................... 13
ATX1: ATX Power Supply Connector................................................ 14
ATX_12V1: ATX 12V Power Connector...........................................14
CN2/3/5/6/7/10 are the Gigabit LAN RJ45 connectors on MB893.
CN2/3: Intel 82541 Gigabit controllers (PCI-32)
CN5/6/7/10: Marvell 8053 Gigabit controllers (PCI Express x 1)
CN7/10: Support hardware by-pass
The ICH6 supports only one Primary IDE interface and can be either
IDE1 or IDE2 based on the user’s selection.
Signal NamePin # 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
IDE1
Address 1 33 34 No connect
Address 0 35 36 Address 2
Chip select 0 37 38 Chip select 1
Activity 39 40 Ground
MB893 User’s Manual 19
INSTALLATIONS
IDE2: Primary IDE Connectors (44-pin 2.0mm)
The ICH6 supports only one Primary IDE interface and can be either
IDE1 or IDE2 based on the user’s selection.
Signal NamePin # 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.
20
MB893 User’s Manual
INSTALLATIONS
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 sorts 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
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
;[]===============================================
; Name : Disable_Watchdog
; IN : None
; OUT : None
;[]===============================================
Disable_Watchdog Proc Near
call Unlock_Chip
xor al, al
mov cl, 30h
call Write_Reg ;watchdog disabled
call Lock_Chip
ret
Disable_Watchdog Endp
;[]===============================================
; 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
22
MB893 User’s Manual
INSTALLATIONS
;[]================================================
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
;[]================================================
; 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
;[]================================================
MB893 User’s Manual 23
INSTALLATIONS
This page is intentionally left blank.
24
MB893 User’s Manual
BIOS SETUP
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:
Set Supervisor/User Password........................................................ 48
Save & Exit Setup............................................................................. 48
Exit Without Saving......................................................................... 48
MB893 User’s Manual 25
BIOS SETUP
BIOS Introduction
The Award BIOS (Basic Input/Output System) installed in your
computer system’s ROM supports Intel
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 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.
®
Pentium® 4 processors. The
26
MB893 User’s Manual
BIOS SETUP
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
Phoenix - AwardBIOS CMOS Setup Utility
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.
MB893 User’s Manual 27
BIOS SETUP
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 board 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.
Date (mm:dd:yy) Thu, Dec 16, 2004 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
Drive A 1.44M, 3.5 in.
Drive B None
Video EGA/VGA
Halt On All Errors , But Keyboard
Base Memory 640K
Extended Memory 515072K
Total Memory 516096K
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.
Phoenix - AwardBIOS CMOS Setup Utility
Standard CMOS Features
28
MB893 User’s Manual
BIOS SETUP
Time
The time format is:
Minute : 00 to 59
Second : 00 to 59
Hour : 00 to 23
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.
Capacity :Capacity/size of the hard disk drive
Cylinder : 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
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.
MB893 User’s Manual 29
BIOS SETUP
Video
This field selects the type of video displ ay card i nstall ed 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.
30
MB893 User’s Manual
BIOS SETUP
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.
CPU Feature
Hard Disk Boot Priority
Virus Warning Disabled Menu Level
CPU L1 and L2 Cache
Hyper-Threading Technology
Quick Power On Self Test Enabled
First Boot Device Floppy
Second Boot Device Hard Disk
Third Boot Device CDROM
Boot Other Device
Swap Floppy Drive
Boot Up Floppy Seek
Boot Up Numlock Status
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
Report No FDD For WIN 95
Console Redirection Enable
Baud Rate 19200
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 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.
Virus Warning
This item protects the boot sector and partition table of your hard disk
against accidental modifications. If an attempt is made, the BIOS will
halt the system and display a warning message. If this occurs, you can
either allow the operation to continue or run an anti-virus program to
locate and remove the problem.
Phoenix - AwardBIOS CMOS Setup Utility
Advanced BIOS Features
Press Enter
Press Enter
Enabled
Enabled
Enabled
Disabled
Disabled
On
Non-OS2
Yes
ITEM HELP
Allows you choose
the VIRUS warning
feature for IDE Hard
Disk boot sector
protection. If this
function is enabled
and someone
attempt to write data
into this area, BIOS
will show a warning
message on screen
and alarm beep
MB893 User’s Manual 31
BIOS SETUP
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
Hyper-Threading Technology enables two logical processors on a single
physical processor by replicating, partitioning, and sharing the resources
within the Intel NetBurst microarchitecture pipeline.
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. The options available include Floppy, LS/ZIP,
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 determi ne 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.
32
MB893 User’s Manual
BIOS SETUP
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 A2 0 is a
device used to address memory above 1 MB.
Typematic Rate Setting
When disabled, continually holding dow n 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 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 expand ability. The default setting is
1.4.
MB893 User’s Manual 33
BIOS SETUP
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.
Console Redirection
Set the Console Redirection from COM port to UNIX t erm inal on BIOS
boot up. By default, the setting is enabled.
Baud Rate
The default value of the Baud Rate is 19200.
Agent Connect Via
By default, this item is set to NULL.
Agent Wait Time (min)
By default, the Agent Wait Time is set to 1 minute.
Agent After Boot
By default, this field is disabled.
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 SC T
test. You should also disable the Onboard FDC Controller in the
Integrated Peripherals screen when there's no floppy drive in the sy stem.
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.
34
MB893 User’s Manual
BIOS SETUP
Advanced Chipset Features
This Setup menu controls the configuration of the chipset.
DRAM Timing Selectable By SPD ITEM HELP
CAS Latency Time Auto Menu Level
DRAM RAS# to CAS# Delay Auto
DRAM RAS# Precharge Auto
Precharge Delay Auto
SLP_S4# Assertion Width
System Memory Frequency Auto
System BIOS Cacheable Enabled
Video BIOS Cacheable Enabled
Memory Hole at 15M-16M Disabled
PCI Express Root Press Enter
On-Chip Video Memory Press Enter
On-Chip Frame Buffer Size
Memory
DVMT Version DVMT 3.0
FIXED Memory Size 64MB
DVMT Memory Size 64MB
Boot Display Auto
DRAM Timing Selectable
This option refers to the method by which the DRAM timi ng is 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.
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 Auto.
Precharge Delay
The default setting for the Precharge Delay is Auto.
Phoenix - AwardBIOS CMOS Setup Utility
Advanced Chipset Features
8MB
MB893 User’s Manual 35
BIOS SETUP
System Memory Frequency
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
On-Chip Frame Buffer Size Memory
Allow user to select the amount of system memory pre-allocated by the
internal graphics device.
Fixed Memory Size
Specify the size of system memory to allocate for video memory.
DVMT Memory Size
Specify the size of DVMT memory to allocate for video memory.
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MB893 User’s Manual
Integrated Peripherals
OnChip IDE Device
Onboard Device
SuperIO Device
2nd SuperIO Device
IDE HDD Block Mode
IDE DMA transfer access
On-Chip Primary PCI IDE
IDE Primary Master PIO
IDE Primary Slave PIO
IDE Primary Master UDMA
IDE Primary Slave UDMA
On-Chip Secondary PCI IDE
IDE Secondary Master PIO
IDE Secondary Slave PIO
IDE Secondary Master UDMA
IDE Secondary Slave UDMA
*** On-Chip Serial ATA Setting ***
SATA Mode
On-Chip Serial ATA
Serial ATA Port0 Mode
Serial ATA Port1 Mode SATA1 master
Phoenix - AwardBIOS CMOS Setup Utility
Integrated Peripherals
Press Enter ITEM HELP
Press Enter Menu Level
Press Enter
Press Enter
Phoenix - AwardBIOS CMOS Setup Utility
OnChip IDE Device
Enabled
Enabled
Enabled Menu Level
Auto
Auto
Auto
Auto
Enabled
Auto
Auto
Auto
Auto
IDE
Auto
SATA0 master
Phoenix - AwardBIOS CMOS Setup Utility
Onboard Device
USB Controller
USB 2.0 Controller
USB Keyboard Support
USB Mouse Support
Azalia/AC97 Audio Select Auto
Phoenix - AwardBIOS CMOS Setup Utility
POWER ON Function
KB Power ON Password Enter
Hot Key Power ON Ctrl-F1
Onboard FDC Controller Enabled
Onboard Serial Port 1 3F8/IRQ4
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
PWRON After PWR-Fail Off
SuperIO Device
BUTTON ONLY
BIOS SETUP
ITEM HELP
Enabled ITEM HELP
Enabled Menu Level
Disabled
Disabled
Menu Level >
ITEM HELP
MB893 User’s Manual 37
BIOS SETUP
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
Use this field to enable or disable IDE DMA transfer access.
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.
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
SATA Mode
The setting choices for the SATA Mode are IDE, RAID and AHCI
Mode. Select [IDE] if you want to have SATA function as IDE.
Select [AHCI] for Advanced Host Controller Interface (AHCI) feature,
with improved SATA performance with native command queuing &
native hot plug. Select [RAID] to use SATA as RAID function. RAID
function is supported on the board if it uses ICH6R. Otherwise, it is not
supported.
On-Chip Serial ATA
The default setting of Auto allows the Serial ATA drive to be enabled,
when the system detects one.
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MB893 User’s Manual
BIOS SETUP
PATA IDE Mode
This item allows you to select the parallel ATA channel. Setting options
are Primary and Secondary.
SATA Port
This feature allows users to view the SATA port as primary or secondary
channel.
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.
Azalia/AC97 Audio Select
The default setting of the AC97 Audio is Auto.
Power ON Function
This field is related to how the system is powered on – such as with th e
use of conventional power button, keyboard or hot keys. The default is
BUTTON ONLY.
KB Power ON Password
This field allows users to set the password when keyboard power on is
the mode of the Power ON function.
Hot Key Power ON
This field sets certain keys, also known as hot keys, on the keyboard that
can be used as a ‘switch’ to power on the system.
MB893 User’s Manual 39
BIOS SETUP
Onboard FDC Controller
Select Enabled if your system has a floppy disk controller (FDC)
installed on the board and you wish t o 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 port s and
their addresses. The default values for these ports are:
Serial Port 1 3F8/IRQ4
Serial Port 2 2F8/IRQ3
Serial Port 3 2F0/IRQ11
Serial Port 4 2E0/IRQ10
Parallel Port 378H/IRQ7
UART Mode Select
This field determines the UART 2 mode in your computer. The default
value is Normal. Other options include IrDA and ASKIR.
PWRON After PWR-Fail
This field sets the system power status whether on or off when power
returns to the system from a power failure situation.
40
MB893 User’s Manual
BIOS SETUP
Power Management Setup
The Power Management Setup allows you to save energy of your system
effectively.
ACPI Function
Power Management
Video Off Method
Video Off In Suspend
Suspend Type
Modem Use IRQ
Suspend Mode
HDD Power Down
Soft-Off by PWR-BTTN
CPU THRM-Throttling
Wake-Up by PCI Card
Power On by Ring
Wake Up On LAN
Resume by Alarm
Date (of Month) Alarm 0
Time (hh:mm:ss) Alarm 0 : 0 : 0
** Reload Global Timer Events **
Primary IDE 0
Primary IDE 1
Secondary IDE 0
Secondary IDE 1
FDD, COM, LPT Port
PCI PIRQ[A-D] #
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
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
DPMS Allows BIOS to control the video display.
Blank Screen Writes blanks to the video buffer.
Phoenix - AwardBIOS CMOS Setup Utility
Power Management Setup
Enabled ITEM HELP
User Define
V/H SYNC+Blank
Yes
Stop Grant
3
Disabled
Disabled
1hr. Except for HDD Power Down
which ranges from 1 min. to 15 min.
off vertical and horizontal scanning.
MB893 User’s Manual 41
BIOS SETUP
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.
Wake-Up by PCI Cards
Enable this field to allow wake up function through a PCI Ethernet card.
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 M arvell
Gigabit Ethernet.
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.
42
MB893 User’s Manual
BIOS SETUP
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.
MB893 User’s Manual 43
BIOS SETUP
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.
PNP OS Installed
Reset Configuration Data
Resources Controlled By
IRQ Resources
DMA Resources
PCI/VGA Palette Snoop
INT Pin 1 Assignment
INT Pin 2 Assignment
INT Pin 3 Assignment
INT Pin 4 Assignment
INT Pin 5 Assignment
INT Pin 6 Assignment
INT Pin 7 Assignment
INT Pin 8 Assignment
** PCI Express relative items **
Maximum Payload Size 4096
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 conf iguration
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 OS 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.
Maximum Payload Size
PCI/VGA cannot work with an MPEG ISA/VESA card.
Phoenix - AwardBIOS CMOS Setup Utility
PnP/PCI Configurations
No ITEM HELP
Disabled
Auto (ESCD)
Press Enter
Press Enter
Disabled
Auto
Auto
Auto
Auto
Auto
Auto
Auto
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
44
MB893 User’s Manual
BIOS SETUP
PC Health Status
This section shows the parameters in determining the PC Health Status.
These parameters include temperatures, fan speeds and voltages.
CPU Warning Temperature
System Temp
CPU Temp 42°C/107°F
CPU FAN Speed (CPU_FAN1/2) 5400 RPM
System FAN Speed (FAN1) 5463 RPM
System FAN Speed (FAN2) 5388 RPM
Vcore(V) 1.02 V
+3.3V 3.32 V
+5 V 4.94 V
+12 V
-12 V
VBAT (V)
5VSB (V)
Shutdown Temperature Disabled
Current CPUFAN1 Speed
Current CPUFAN2 Speed
Current CPUFAN3 Speed
Current CPUSYS1 Speed
1st Smart Fan II Temperature
Level2 Temperature
2nd Smart Fan II Temperature
Level2 Temperature
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.
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.
Temperatures/Fan Speeds/Voltages
These fields are the parameters of the hardware monitoring function
feature of the board. The values are read-only values as monitored by the
system and show the PC health status.
CPU/Chassis Fan Failure Warning
When enabled, this field lets the system sounds a ‘siren’ audible warning
to the user that the CPU fan or chassis fan has malfunctioned.
Phoenix - AwardBIOS CMOS Setup Utility
PC Health Status
80°C/176°F
28°C/82°F
12.03 V
-12.44 V
3.21V
5.15V
ITEM HELP
MB893 User’s Manual 45
BIOS SETUP
1st Smart Fan II Temperature (SYS_FAN1 connector)
Enable or Disable the first phase Smart FAN functionality of
SYS_FAN1 connector.
Configuration option: [30℃] [35℃] [40℃] [45℃] [50℃] [55℃]
[60℃]
If the value is set, the fan turns to 25% duty cycle when the temperature
of CPU reach to the value.
The default value is Disabled.
2nd Smart Fan II Temperature (CPU_FAN1 / CPU_FAN2 /
CPU_FAN3 connectors)
Enable or Disable the first phase Smart FAN functionality of
CPU_FAN1/CPU_FAN2/CPU_FAN3 connectors.
Configuration option: [30℃] [35℃] [40℃] [45℃] [50℃] [55℃]
[60℃]
If the value is set, the fan turns to 25% duty cycle when the temperature
of CPU reach to the value. The default value is Enabled.
Level2 Temperature
Set the second phase Smart FAN functionality.
Configuration option: [5℃] [10℃] [15℃]
If both the value and the Smart Fan II Temperature are set, the fan
turns to 50% duty cycle when the temperature of CPU reach to ( first
phase + second phase temperature).
The third phase Smart FAN functionality:
If the temperature of CPU is over (first phase + second phase
temperature + 10℃), the fan turns to 75% duty cycle.
The final phase Smart FAN functionality:
If the temperature of CPU is over (first phase + second phase
temperature + 20℃), the fan turns to 100% duty cycle.
46
MB893 User’s Manual
BIOS SETUP
Frequency/Voltage Control
This section shows the user how to configure the processor frequency.
CPU Clock Ratio
Auto Detect PCI Clk
Spread Spectrum
CPU Clock Ratio
The CPU Ratio, also known as the CPU bus speed multiplier, can be
configured through this field. The default setting is 8X. This parameter
can be used in conjunction with the above field to change the processor’s
speed.
Auto Detect 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
Phoenix - AwardBIOS CMOS Setup Utility
Frequency/Voltage Control
14X
Disabled
Disabled Menu Level
ITEM HELP
.
MB893 User’s Manual 47
BIOS SETUP
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.
48
MB893 User’s Manual
DRIVERS INSTALLATION
Drivers Installation
This section describes the installation procedures for software and
drivers under the Windows 2000 and Windows XP. The software and
drivers are included with the board. If you find the items missi ng, please
contact the vendor where you made the purchase. The contents of this
section include the following:
Marvell 88E8053 LAN Drivers Installation......................52
INTEL PRO LAN Drivers Installation .............................52
IMPORTANT NOTE:
After installing your Windows operating system (Windows 2000/XP),
you must install first the Intel Chipset Software Installation Utility
before proceeding with the drivers installation.
MB893 User’s Manual 49
DRIVERS INSTALLATION
Intel 915G Chipset Software Intallation Utility
The Intel 915G 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 2000/XP. (Before installed Intel Chipset Software
Intallation Utility,Please update your system to Windows 2000 SP4 or
Windows XP SP1A)
1. Insert the CD that comes with the board and the screen below would
appear. Click Intel Chipset Software Intallation Utility.
2. When the Welcome screen appears, click Next to continue.
3. Click Yes to accept the software license agreement and proceed with
the installation process.
4. On Readme Information screen, click Next to continue the
installation.
5. 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.
50
MB893 User’s Manual
DRIVERS INSTALLATION
Intel 915G Chipset Graphics Driver
The Intel 915G Chipset Family Graphics Drivers come in the CD with
the motherboard. Follow the instructions below to complete the
installation under Windows 2000/XP.
1. Insert the CD that comes with the board and the screen below would
appear. Click Intel 915G Chipset Family Graphics Driver.
2. When the Welcome screen appears, click Next to continue.
3. Click Yes to accept the software license agreement and proceed with
the installation process.
4. 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.
MB893 User’s Manual 51
DRIVERS INSTALLATION
Marvell 88E8053 LAN Drivers Installation
Follow the steps below to start installing the Marvell 88E8053 PCI
Express Gigabit LAN drivers.
1. Insert the CD that comes with the board. In the initial screen, click on
LAN Card on the left side.
2. When the Welcome screen appears, click Next to start the drivers
instalation.
3. Click Finish to complete the setup and for changes to take effect.
52
MB893 User’s Manual
DRIVERS INSTALLATION
Intel PRO LAN Drivers Installation
Follow the steps below to install the Ethernet/LAN drivers in Windows 2000/XP.
1. Insert the CD that comes with MB893. On the initial screen, click
LAN Card on the left side and the screen below would appear.
2. Click Intel(R) PRO LAN Drivers. Follow the instructions accordingly
to finish the Ethernet driver installation.
MB893 User’s Manual 53
DRIVERS INSTALLATION
This page is intentionally left blank.
54
MB893 User’s Manual
APPENDIX
Appendix
A. I/O Port Address Map
Each peripheral device in the system is assigned a set of I/O port
addresses that also becomes the identity of the device. The followin g
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
278h - 27Fh Parallel Port #2(LPT2)
2F8h - 2FFh Serial Port #2(COM2)
2B0h - 2DFh Graphics adapter Controller
378h - 3FFh Parallel Port #1(LPT1)
360h - 36Fh Network Ports
3B0h - 3BFh Monochrome & Printer adapter
3C0h - 3CFh EGA adapter
3D0h - 3DFh CGA adapter
3F0h - 3F7h Floppy Disk Controller
3F8h - 3FFh Serial Port #1(COM1)
MB893 User’s Manual 55
APPENDIX
B. Interrupt Request Lines (IRQ)
Peripheral devices use interrupt request lines to notify CPU for the
service required. The following table shows the IRQ used by t he 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
56
MB893 User’s Manual
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