Acrosser Technology AR-B1991 User manual

User’s Guide
AR-B1991
Pentium LGA775 High Performance 3D
Gaming Motherboard
Edition: 1.01
Book Number: AR-B1991-2007/1/5

User’s Guide
AR-B1991 2
@Copyright 2005
All Rights Reserved.
Manual first edition Apr 11, 2006
The information in this document is subject to change without prior
notice in order to improve reliability, design and function and does not
represent a commitment on the part of the manufacturer.
In no event will the manufacturer be liable for direct, indirect, special,
incidental, or consequential damages arising out of the use or inability to
use the product or documentation, even if advised of the possibility of
such damages.
This document contains proprietary information protected by copyright.
All rights are reserved. No part of this manual may be reproduced by
any mechanical, electronic, or other means in any form without prior
written permission of the manufacturer.
Trademarks
The Board is registered trademarks X-Fire Acrosser, IBM PC is a
registered trademark of International Business Machines Corporation.
Pentium is a registered trademark of Intel Technologies, Inc. Award is
registered trademarks of Award Software International, Inc. Other
product names mentioned herein are used for identification purposes
only and may be trademarks and/or registered trademarks of their
respective companies.

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Contents
Contents................................................................ 3
Introduction............................................................. 5
1.1 Specifications:....................................................................... 5
1.2 What You Have..................................................................... 7
Installation .............................................................. 8
2.1 System Board Layout............................................................ 8
2.2 Jumper & Header DESCRIPTION...................................... 10
Connection(AR-B1991)....................................... 12
Award BIOS Setup................................................ 14
4.1 Introduction ......................................................................... 14
4.2 Starting Setup ..................................................................... 14
4.3 Using Setup......................................................................... 15
4.4 Main Menu .......................................................................... 16
4.5 Advanced BIOS Features ................................................... 19
4.6 PnP/PCI Configuration Setup ............................................. 21
4.7 PnP/PCI Configuration Setup ............................................. 22
4.8 Peripheral............................................................................ 23
4.9 PC Health............................................................................ 25

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4.10 Boot…. ................................................................................ 26
4.11 Exit Selecting ...................................................................... 27

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1
Introduction
1.1 Specifications:
CPU : Intel LGA775 CPU.
Chipset : Intel 945G and ICH7.
RAM memory : Two DDR2 DIMM Socket support to 2GB.
Display Controller : Intel 945G Supports non-interlaced CRT monitors.
IDE Interface : One 44pin 2.0mm IDE channel.
Compact Flash TM interface : Supports Two Compact Flash TM Type II socket
for Compact Flash Disk Share with IDE.
Series ports : Six high-speed 16C550 compatible UART ports.
USB port : Support Six USB 2.0 compatible ports(four connector,two pin
heater).
Audio Connector : Supports Line-in, Line-out.
PS/2 Mouse/Keyboard Connector
Watchdog timer : Time setting form 1 to 255 second / minute System Reset
generate when CPU did not periodically trigger the timer.
REALTEK LAN Controller : 1 port REARTEK 8100C 10/100BASE-TX,1 port
8110S-32 10/100/1000BASE-TX.Connected to your LAN through RJ45
connector.
Dimension : 310mm(W) X 200mm(L).
Operating Temperature : -10°~ 55°C ( CPU needs Cooler ).

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AR-B1991 6
Trusted Platform Module(TPM1.2)
The basis of Trusted Computing is the Trusted Platform Module,or TPM.The
TPM is a small piece of silicon affixed in a device. It securely stores digital
keys,certificates and passwords and is more difficult to attack virtually or
physically.
INFINEON’S TPM Security Solution provides a comprehensive hardware and
software solution for safer computing targeted for today’s notebook and
desktop architectures.The Infineon TPM Management software enables the
easy use of the most important trusted computing functions such as
authentication,data integrity,system integrity,confidentiality,and availability.
The detail of the TPM functions and installation please refer to following web-
address and driver CD folder “Infineon TPM”
http://www.infineon.com

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1.2 What You Have
In addition to this User's Manual, the board package includes the
following items:
System board (AR-B1991)
User’s Manual
Drive CD

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AR-B1991 8
2
Installation
This chapter describes how to install system. At first, the layout
of board is shown, and the unpacking information that you should be
careful is described. The jumpers and switches setting for the board
configuration.
2.1 System Board Layout
Top Placement

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Bottom Placement

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AR-B1991 10
2.2 Jumper & Header DESCRIPTION
CCMOS1 : CMOS reset pin header.
Default setting : 1-2 short
JP7(for CON1) & JP8(for CON2) : Select CF Master/Slave mode.
Default setting : JP7 open, JP8 open
FPIO2 : HDD LED, Reset, PSON Connector.
FPUSB1 : USB4, 5(FPUSB1) Connector.
CCMOS1 DESCRIPTION
1-2 Normal Operation
2-3 Reset CMOS
JP7 DESCRIPTION
Short Master
Open Slave
JP8 DESCRIPTION
Short Master
Open Slave
PIN DESCRIPTION PIN DESCRIPTION
1 HDD LED+ 2 REV
3 HDD LED- 4 REV
5 RESET-(GND) 6 PSON- (GND)
7 RESET+ 8 PSON+
9 NC 10 NC
PIN DESCRIPTION PIN DESCRIPTION
1 VCC 2 VCC
3 DATA-(port4) 4 DATA-(port5)
5 DATA+(port4) 6 DATA+(port5)
7 GND 8 GND
9 NC 10 NC

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FAN1, 2, SYSFAN: Fan Connector.
CPUFAN: Fan Connector.
JP17 : Selection COM1 is RS232 or RS422/485
Default setting : 1-2 short
JP14,JP15 : Selection COM1(CN16 pin 2,3 and pin 6,7) signals
are RS232 or RS422/485.
Default setting : JP14(1-3,2-4 short),JP15(1-3,2-4 short)
FPIO1 : IR Connector.
PIN DESCRIPTION
1 GND
2 FAN+ (12V)
3 FANSP
PIN DESCRIPTION
1 GND
2 FAN+ (12V)
3 FANSP
4 Control
JP17 DESCRIPTION
1-2 RS232
3-4,5-6 RS422
5-6 RS485
JP14 JP15 DESCRIPTION
1-3,2-4 1-3,2-4 COM1=RS232
3-5,4-6 3-5,4-6 PIN 2,3/6,7=RS422
3-5,4-6 Don’t care PIN 2,3=RS485
PIN DESCRIPTION PIN DESCRIPTION
1 NC 2 NC
3 VCC 4 GND
5 TX 6 RX

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3
Connection(AR-B1991)
COM2 : RS-232 Serial port (2.0mmPin Header).
SATA1,3 : Serial ATA Port .
CN16 : COM1,COM3~6 Connector .
PIN DESCRIPTION PIN DESCRIPTION
1 DCD 2 RX
3 TX 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
9 RI 10 NC
PIN DESCRIPTION
1 GND
2 TX+
3 TX-
4 GND
5 RX+
6 RX-
7 GND

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Mouse, Keyboard, VGA, Line Out/In, Mic, Lan2(Giga
port),Lan1(10/100Mb port), USB Connector.
PIN DESCRIPTION PIN DESCRIPTION
1 DCD1 2 RX1
3 TX1 4 DTR1
5 DSR1 6 RTS1
7 CTS1 8 RI1
9 DCD3 10 RX3
11 TX3 12 DTR3
13 DSR3 14 RTS3
15 GND 16 CTS3
17 RI3 18 DCD4
19 RX4 20 TX4
21 DTR4 22 DSR4
23 RTS4 24 GND
25 CTS4 26 RI4
27 DCD5 28 RX5
29 TX5 30 DTR5
31 DSR5 32 RTS5
33 GND 34 CTS5
35 RI5 36 DCD6
37 RX6 38 TX6
39 DTR6 40 DSR6
41 RTS6 42 GND
43 CTS6 44 RI6

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4
Award BIOS Setup
4.1 Introduction
This chapter discusses the Setup program built into the BIOS. The
Setup program allows users to configure the system. This configuration
is then stored in battery-backed CMOS RAM so that it retains the Setup
information while the power is off.
4.2 Starting Setup
The BIOS is immediately active when you turn on the computer. While
the BIOS is in control, the Setup program can be activated in one of two
ways:
1. By pressing <Del> immediately after switching the system on, or
2. By pressing the <Del> key when the following message appears
briefly at the bottom of the screen during the POST (Power On Self-
Test).
Press DEL to enter SETUP.
If the message disappears before you respond and you still wish to enter
Setup, restart the system to try again by turning it OFF then ON or
pressing the "RESET" button on the system case. You may also restart
by simultaneously pressing <Ctrl>, <Alt>, and <Delete> keys. If you do
not press the keys at the correct time and the system does not boot, an
error message will be displayed and you will again be asked to...
PRESS F1 TO CONTINUE, DEL TO ENTER SETUP

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4.3 Using Setup
In general, you can use the arrow keys to highlight items, press <Enter>
to select, use the PageUp and PageDown keys to change entries, press
<F1> for help and press <Esc> to quit. The following table provides
more details about how to navigate in the Setup program using the
keyboard.
Key Function
Up Arrow Move to the previous item
Down
Arrow Move to the next item
Left Arrow Move to the item on the left (menu bar)
Right Arrow Move to the item on the right (menu bar)
Esc Main Menu: Quit without saving changes
Submenus: Exit Current page to the next higher level
menu
Move Enter Move to the item you desired
PgUp key Increase the numeric value or make changes
PgDn key Decrease the numeric value or make changes
+ key Increase the numeric value or make changes
- key Decrease the numeric value or make changes
Esc key Exit Menu -- Quit and not save changes into CMOS
Status Page Setup Menu and Option Page Setup
Menu -- Exit current page and return to Main Menu
F1 key General help on Setup navigation keys
F5 key Load previous values from CMOS
F6 key Load the fail-safe defaults from BIOS default table
F7 key Load the optimized defaults
F10 key Save all the CMOS changes and exit

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4.4 Main Menu
The items in Standard CMOS Setup Menu are divided into 10 categories.
Each category includes no, one or more than one setup items. Use the
arrow keys to highlight the item and then use the <PgUp> or <PgDn>
keys to select the value you want in each item.
Figure 1: The Main Menu
Main Menu Selections
Item Options DESCRIPTION
Date MM DD YYYY Set the system date.
Time HH : MM : SS Set the system time
IDE Master Options are in its sub
menu
(described in Table 3)
Press <Enter> to enter
the sub menu of detailed
options
IDE Slave Options are in its sub
menu
(described in Table 3)
Press <Enter> to enter
the sub menu of detailed
options
Halt On All Errors
No Errors Select the situation in which
y
ou want the BIOS

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All, but Keyboard
All, but Diskette
All, but Disk/Key
to stop the POST
process and notify you
Base Memory N/A Displays the amount of
conventional memory
detected during boot up
Extended Memory N/A Displays the amount of
extended memory
detected during boot up
Total Memory N/A Displays the total
memory available in the
system
Table 1 Main Menu Selections
IDE Adapters
The IDE adapters control the hard disk drive. Use a separate sub menu
to configure each hard disk drive.
Figure 2 shows the IDE primary master sub menu.
IDE HDD Auto-Detection[Press Enter]
IDE Primary Master[Auto]
Access Mode [Auto]
C a p a c i t y 0 M B
Cylinder0
H e a d 0
P r e c o m p 0
Landing Zone0
S e c t o r 0
Figure 2 IDE Primary Master sub menu
Use the legend keys to navigate through this menu and exit to
the main menu. Use Table 2 to configure the hard disk.

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Item Options DESCRIPTION
IDE HDD Auto-detection Press Enter Press Enter to auto-detect
the HDD on this channel. If
detection is successful, it fills
the remaining fields on this
menu.
IDE Primary Master None
Auto
Manual
Selecting ‘manual’ lets you
set the remaining fields on
this screen. Selects the type
of fixed disk. "User Type"
will let you select the number
of cylinders, heads, etc.
Note: PRECOMP=65535
means NONE !
Capacity Auto Display
your disk drive
size
Disk drive capacity
(Approximated). Note that
this size is usually slightly
greater than the size of a
formatted disk given by a
disk checking program.
Access Mode CHS
LBA
Large
Auto
Choose the access mode for
this hard disk
Table 2 Hard disk selections

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4.5 Advanced BIOS Features
This section allows you to configure your system for basic operation.
Figure 3 Advanced menu
Hyper-Threading Technology
“Enabled” for Windows XP and Linux 2.4.x(OS optimized for Hyper
Threading Technology )and “Disable” for other OS(OS not optimized for
Hyper Threading Technology)
Quick Power On Self Test
This category speeds up Power On Self Test (POST) after you power up
the computer. If it is set to Enable, BIOS will shorten or skip some check
items during POST.
Enabled Enable quick POST
Disabled Normal POST

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Full Screen LOGO Show
This item allows you to enable or disable show full screen LOGO.
The Choice: Enabled, Disabled.
APIC Mode
This item allows use Advanced Programmable Interrupt Controller
feature. The Choice: Enabled, Disabled.
USB Keyboard Support
This item allows you to enable or disable USB keyboard support.
The Choice: Enabled, Disabled.
PS/2 Mouse Function
Disabled-prevents any installed PS/2 mouse from functioning but frees
up IRQ12.Enabled-allows the operating system to determine whether to
enable or disable the mouse. Choice: Enabled, Disabled.
PEG/Onchip VGA Control
This item allows you to choice use VGA Care or Onboard VGA or Auto
detect each of the device.
PEG Force X1
This item is force VGA Care slot can use X1 PCI-E device.
Choice: Enabled, Disabled.
Init Display first
This item choice which one is first display.
Choice: PCI Slot, PCI Ex
On-Chip Frame Buffer Size
This item is setting OnBoard Frame Buffer Size.
Choice: 8M, 1M
DVMT Mode
This item allows you to choise use fixed or dynamic share memory.
Choice: Fixed, DVMT, BOTH
DMVT/FIXED Memory Size
This item is choise how many big size if you select DVMT Mode is Fixed.
Choice: 64MB, 128MB, 224MB.