Acrosser Technology AR-B1662 User manual

AR-B1662 User’s Guide
1
AR-B1662
VIA Processor for VIA PLE133T with
VGA(CRT/LCD), SDRAM PC133, 4 LAN,
Compact Flash
User’ s Guide
Edition: 1.0
Book Number: AR-B1662-03.0220

AR-B1662 User’s Guide
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Table of Contents
0. PREFACE.............................................................................................................................................................. 3
0.1 COPYRIGHT NOTICE AND DISCLAIMER.....................................................................................................................................3
0.2 WELCOME TO THE AR-B1662 CPU BOARD................................................................................................................................3
0.3 BEFORE YOU USE THIS GUIDE...................................................................................................................................................3
0.4 RETURNING YOUR BOARD FOR SERVICE.................................................................................................................................3
0.5 TECHNICAL SUPPORT AND USER COMMENTS........................................................................................................................3
0.6 ORGANIZATION.............................................................................................................................................................................4
0.7 STATIC ELECTRICITY PRECAUTIONS ........................................................................................................................................4
1. INTRODUCTION.......................................................................................................................................................... 5
1.1 SPECIFICATIONS..........................................................................................................................................................................6
1.2 PACKING LIST................................................................................................................................................................................6
2. SETTING UP SYSTEM................................................................................................................................................ 7
2.1 AR-B1662 OVERVIEW....................................................................................................................................................................7
2.2 SYSTEM SETTINGS.......................................................................................................................................................................7
2.2.1 Keyboard & Mouse Connector (KB1)...........................................................................................................................................8
2.2.2 SDRAM SOCKET 144 PIN (DIMM1)............................................................................................................................................8
2.2.3 Hard Disk (IDE) Connector (IDE1) ...............................................................................................................................................9
2.2.4 FDD Port Connector (FDD1)........................................................................................................................................................9
2.2.5 CRT Connector (VGA1)..............................................................................................................................................................10
2.2.6 USB Connector (USB1)..............................................................................................................................................................10
2.2.7 LCD Header (LCD1)...................................................................................................................................................................11
2.2.8 Serial Port (COM1, COM2).........................................................................................................................................................12
2.2.9 Fan Power Connector (JFAN1, JFAN2).....................................................................................................................................12
2.2.10 Internal Buzzer (U7) .................................................................................................................................................................12
2.2.11 Power/HD LED (LED11)...........................................................................................................................................................12
2.2.12 LAN LED (LED4, LED5, LED6, LED7).....................................................................................................................................13
2.2.13 Ethernet RJ-45 Connector (LAN1, LAN2, LAN3, LAN4) ..........................................................................................................13
2.2.14 Reset Button (RST1)................................................................................................................................................................13
2.2.15 Power Button (PWBTN1)..........................................................................................................................................................13
2.2.16 Power Connector (PWR2)........................................................................................................................................................13
2.2.17 Support Riser Card (J8)............................................................................................................................................................14
2.2.18 GPIO Port (CN1) ......................................................................................................................................................................14
2.2.19 Mini PCI Slot (PCI2) .................................................................................................................................................................14
2.2.20 Compact Flash Slot (CF1)........................................................................................................................................................15
2.2.21 CF Master/Slave Mode Select (J102).......................................................................................................................................15
2.2.22 Clear CMOS Jumper (J103).....................................................................................................................................................15
3. CRT/LCD FLAT PANEL DISPLAY............................................................................................................................ 16
3.1 CRT CONNECTOR (CRT1)..........................................................................................................................................................16
3.2 LCD FLAT PANEL DISPLAYS (OPTIONAL) ................................................................................................................................16
4. WATCHDOG TIMER ................................................................................................................................................. 17
4.1 WATCHDOG TIMER SETTING ....................................................................................................................................................17
4.2 WATCHDOG TIMER TRIGGER....................................................................................................................................................17
5. BIOS CONSOLE........................................................................................................................................................ 18
5.1 BIOS SETUP OVERVIEW.............................................................................................................................................................18
5.2 STANDARD CMOS SETUP..........................................................................................................................................................19
5.3 ADVANCED CMOS SETUP..........................................................................................................................................................20
5.4 ADVANCED CHIPSET SETUP.....................................................................................................................................................23
5.5 POWER MANAGEMENT..............................................................................................................................................................24
5.6 PCI/PLUG AND PLAY...................................................................................................................................................................25
5.7 PERIPHERAL SETUP...................................................................................................................................................................26
5.8 AUTO-DETECT HARD DISKS......................................................................................................................................................27
5.9 PASSWORD SETTING.................................................................................................................................................................27
5.10 LOAD DEFAULT SETTING.........................................................................................................................................................27
5.10.1 Auto Configuration with Optimal Setting...................................................................................................................................27
5.10.2 Auto Configuration with Fail Safe Setting.................................................................................................................................27
5.11 BIOS EXIT...................................................................................................................................................................................27
5.12 BIOS UPDATE ............................................................................................................................................................................28
APPENDIX A. I/O & MEMORY MAP............................................................................................................................. 29
APPENDIX B. INTERRUPT REQUEST (IRQ)............................................................................................................... 30

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0. PREFACE
0.1 COPYRIGHT NOTICE AND DISCLAIMER
This document is copyrighted, 2003, by Acrosser Technology Co., Ltd. All rights are reserved. No part of this
manual may be reproduced, copied, transcribed, stored in a retrieval system, or translated into any language or
computer language in any form or by any means, such as electronic, mechanical, magnetic, optical, chemical,
manual or other means without the prior written permission or original manufacturer.
Acrosser Technology assumes no responsibility or warranty with respect to the content in this manual and
specifically disclaims any implied warranty of merchantability or fitness for any particular purpose. Furthermore,
Acrosser Technology reserves the right to make improvements to the products described in this manual at any
times without notice. Such revisions will be posted on the Internet (WWW.ACROSSER.COM) as soon as possible.
Possession, use, or copy of the software described in this publication is authorized only pursuant to valid written
license from Acrosser or an authorized sub licensor.
ACKNOWLEDGEMENTS
Acrosser, AMI, IBM PC/AT, VIA, Windows 95, Windows 98, Windows ME, Windows 2000, Windows XP,
MS-DOS…are registered trademarks.
All other trademarks and registered trademarks are the property of their respective owners.
0.2 WELCOME TO THE AR-B1662 CPU BOARD
This guide introduces the Acrosser AR-B1662 CPU Board.
Use information provided in this manual describes this card’s functions and features. It also helps you start, set up
and operate your AR-B1662. General system information can also be found in this publication.
0.3 BEFORE YOU USE THIS GUIDE
Please refer to the Chapter 2, “System Setting,” in this guide, if you have not already installed this AR-B1662.
Check the packing list before you install and make sure the accessories are completely included.
AR-B1662 CD provides the newest information regarding the CPU card. Please refer to the files of the
enclosed utility CD. It contains the modification and hardware & software information, and adding the
description or modification of product function after manual printed.
0.4 RETURNING YOUR BOARD FOR SERVICE
If your board requires any services, contact the distributor or sales representative from whom you purchased the
product for service information. If you need to ship your board to us for service, be sure it is packed in a protective
carton. We recommend that you keep the original shipping container for this purpose.
You can help assure efficient servicing for your product by following these guidelines:
1. Include your name, address, daytime telephone, facsimile number and E-mail.
2. A description of the system configuration and/or software at the time of malfunction.
3. A brief description of the problem occurred.
0.5 TECHNICAL SUPPORT AND USER COMMENTS
Users comments are always welcome as they assist us in improving the quality of our products and the readability
of our publications. They create a very important part of the input used for product enhancement and revision.
We may use and distribute any of the information you provide in any way appropriate without incurring any
obligation. You may, of course, continue to use the information you provide.
If you have any suggestions for improving particular sections or if you find any errors on it, please send your
comments to Acrosser Technology Co., Ltd. or your local sales representative and indicate the manual title and
book number.
Internet electronic mail to: [e-mail]
[email protected]w

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0.6 ORGANIZATION
This information for users covers the following topics (see the Table of Contents for a detailed listing):
Chapter 1, “Introduction”, provides specifications and packing list.
Chapter 2, “Setting Up System”, describes how to adjust the jumpers and the connector settings.
Chapter 3,“CRT/LCD Flat Panel Display”, describes the configuration and installation procedure for using LCD and
CRT displays.
Chapter 4, “Watchdog Timer”, describes watchdog timer setting and trigger.
Chapter 5, “BIOS Console”, provides the BIOS settings options.
Appendix A, Memory & I/O Map
Appendix B, Interrupt Request (IRQ)
0.7 STATIC ELECTRICITY PRECAUTIONS
Before removing the board from its anti-static bag, read this section about static electricity precautions.
Static electricity is a constant danger to computer systems. The charge that can build up in your body may be
more than sufficient to damage integrated circuits on any PC board. It is, therefore, important to observe basic
precautions whenever you use or handle computer components. Although areas with humid climates are much
less prone to static build-up, it is always best to safeguard against accidents that may result in expensive repairs.
The following measures should be sufficient to protect your equipment from static discharge:
 Touch a grounded metal object to discharge the static electricity in your body (or ideally, wear a grounded
wrist strap).
 When unpacking and handling the board or other system components, place all materials on an anti-static
surface.
 Be careful not to touch the components on the board, especially the “golden finger” connectors on the
bottom of the board.

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1. INTRODUCTION
Welcome to the AR-B1662 Single Board Computer. The AR-B1662 board is Low power VIA Eden series
Processors with the VIA ® advanced chipset Apollo PLE133T (VT8601T and VT82C686B). This product is
designed for the system manufacturers, integrators, or VARs that want to provide all the performance, reliability,
and quality at a reasonable price.
In addition, the AR-B1662 provides on chip VGA. The VGA, which provides up to Ture Color (32 bit) 1024x768, or
High Color (16 bit) 1280x1024 resolution. The VGA memory is share main memory (2M, 4M, or 8M). AR-B1662
also has 24-bit LCD function in the system.
The AR-B1662 is loaded with special on-board features that rival full-size systems. It has four networks controller
on board, uses National Semiconductor 83816 LAN controller, a fully integrated 10/100BASE-TX solution with high
performance networking functions. CompactFlash™. The AR-B1662 also includes one 144-pin SO-DIMM sockets
for up to 512 MB total on-board memory. The AR-B1662 has two on-board serial ports; COM1 with
RS232C,COM2 with RS232C, one USB connectors for 2 USB ports, watchdog timer and tough industrial grade
construction. All these features make the AR-B1662 a very "system integrator friendly" solution, perfect for
handling applications in the harshest unmanned environments.
VIA Eden
10/100M
39SF020
RJ-45
RJ-45
83816
IDE PORT1
CPLD
BIOS
NT82C686B
South Bridge
83816
Keyboard
83816
RJ-45
10/100M
ISA BUS
RJ-45
LCD
2 Port USB
CRT
10/100M
Serial Port x2
CF CARD
GPIO
2S
100-133MHZ
SODIMM
x 1
Arbiter
PCI BUS
PLE133T
Chipset
NT8601T
North Bridge
PROCESSOR
PS/2 Mouse
MINIPCI x 1
PCI SLOT x 1
or
RISER PCI *2
10/100M
83816
AR-B1662 System Block Diagram

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1.1 SPECIFICATIONS
 CPU: On-board VIA Processor Eden 667 MHz Process<EBGA>
 DMA channels: 7
 Interrupt levels: 15
 Chipset: VIA ® Apollo PLE133T ( VT8601T Integrated 2D / 3D graphics accelerator and VT82C686B)
 RAM memory: Supports SDRAM PC133, on-board 144-pin SO-DIMM up to 512MB SDRAM memory
module
 VGA Controller: Embedded VGA controller, Screen Resolution: up to Ture Color(32 bit)1024x768, or High
Color(16 bit) 1280x1024.
 Display Interface: CRT – D-SUB 15-pin female connector
LCD – for 24 bit TFT LCD Panel, 2x22x2.00mm pin-header connector
 Ultra ATA/33/66/100 IDE Interface: One PCI Enhance IDE channel. The south bridge VT82C686B supports
Ultra ATA/33IDE interface. To support Ultra ATA66/100 Hard disk, a specified cable must be available.
 Floppy disk drive interface: 2.88 MB, 1.44MB, 1.2MB, 720KB, or 360KB floppy disk drive.
 C. F.: Supports Compact Flash Type I interface
 Series ports: On-board one D-SUB 9-pin male connector for COM1 with RS-232C.On-board one
2x5x2.00mm pin-header connector for COM2 with RS-232C.
 USB port: On-board one USB connector for 2 USB ports.
 Watchdog timer: Software programmable 1~63sec.
 Ethernet: On-board Four National Semiconductor 83816, supports 10/100Mbps Base-T with RJ-45
connector built-in LED
 K/B & Mouse: On-board PS/2 Keyboard and Mouse connector
 GP I/O: On-board 2x10x2.00mm pin-header connector for 8-bit input and 8-bit output, TTL level
 Power Req.: +5V 4A and +12V 1A maximum
 PC Board: 8 layers, EMI considered
 Dimensions: 203 mm x 146 mm
 Operating Temperature: 0°~ 60℃
1.2 PACKING LIST
These accessories are included with the system. Before you begin installing your AR-B1662 board, please make
sure that the following items have been included inside the AR-B1662 package.
 The quick setup manual
 1 AR-B1662 CPU board
 1 Hard disk drive adapter cable for 2.5” hard disk
 1 Floppy disk drive adapter cable
 1 Software utility CD
 1 RS-232 and 1 PS/2 Mouse & Keyboard interface cable mounted on bracket
 1 VGA cable
 1 Mini Dim power adapter & cable

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2. SETTING UP SYSTEM
This chapter describes how to install the AR-B1662. At first, the layout of AR-B1662 is shown, and the unpacking
information that you should be careful is described.
 Overview
 System Settings
2.1 AR-B1662 OVERVIEW
ㄟ
TOP PLACEMENT
BOTTOM PLACEMENT
2.2 SYSTEM SETTINGS
Jumper pins allow you to set specific system parameters. Set them by changing the pin location of the jumper

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blocks. (A jumper block is a small plastic-encased conductor that slips over the pins.) To change a jumper
setting, remove the jumper from its current location with your fingers or small needle-nosed pliers. Place the
jumper over the two pins designated for the desired setting. Press the jumper evenly onto the pins. Be careful
not to bend the pins.
We will show the locations of the AR-B1662 jumper pins, and the factory-default settings.
CAUTION: Do not touch any electronic components unless you are safely grounded. Wear a grounded wrist
strap or touch an exposed metal part of the system unit chassis. The static discharges from your fingers can
permanently damage electronic components.
2.2.1 Keyboard & Mouse Connector (KB1)
The KB1 is a 6-pin pin header keyboard & Mouse connector. This keyboard & Mouse connector is PS/2 type
connector. This connector is also for a standard IBM-compatible keyboard when used with the included PS/2
keyboard & Mouse adapter cable.
2.2.2 SDRAM SOCKET 144 PIN (DIMM1)
It can assemble 16/32/64/128/256/512MB 144 pin DIMM Module Memory. When you set up 144-pin DIMM Module
Memory, AR-B1662 will auto-detect DRAM, and adopt correct save in order to make memory work till the best
situation.
Caution: Set up 144-pin DIMM Module Memory, please insert into slot vertical, if the direction is wrong and it leads
to failure, please confirm the direction is right.
DRAM Configuration (DIMM1)
11144
144 pin SO-DIMM
Pin # Signal Name
1 MOUSE DATA
2 KB DATA
3 GND
4 VCC
5 MOUSE CLOCK
1
66 KB CLOCK
KB

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2.2.3 Hard Disk (IDE) Connector (IDE1)
※44 Pin Hard Disk Connector (IDE1)
The on-board 44-pin mini-pitched IDE interface is used to let user support either a 3.5" HDD with 44 to 40pin
adapter cable.
1 43
2 44
Pin Signal Pin Signal
1 -RESET 2 GROUND
3 DATA 7 4 DATA 8
5 DATA 6 6 DATA 9
7 DATA 5 8 DATA 10
9 DATA 4 10 DATA 11
11 DATA 3 12 DATA 12
13 DATA 2 14 DATA 13
15 DATA 1 16 DATA 14
17 DATA 0 18 DATA 15
19 GROUND 20 NOT USED
21 IDEDREQ 22 GROUND
23 -IOW A 24 GROUND
25 -IOR A 26 GROUND
27 IDEIORDYA 28 GROUND
29 -DACKA 30 GROUND
31 AINT 32 GROUND
33 SA 1 34 Not Used
35 SA 0 36 SA 2
37 CS 0 38 CS 1
39 HD LED A 40 GROUND
41 VCC 42 VCC
43 GROUND 44 Not Used
2.2.4 FDD Port Connector (FDD1)
The AR-B1662 provides a 34-pin header type connector for supporting up to two floppy disk drives. To enable or
disable the floppy disk controller, please use the BIOS Setup program.
1 33
2 34
Pin Signal Pin Signal
1-33(odd) GROUND 18 -DIRECTION
2 DRVEN 0 20 -STEP OUTPUT PULSE
4 NOT USED 22 -WRITE DATA
6 DRVEN 1 24 -WRITE ENABLE
8 -INDEX 26 -TRACK 0
10 -MOTOR ENABLE 0 28 -WRITE PROTECT
12 -DRIVE SELECT 1 30 -READ DATA
14 -DRIVE SELECT 0 32 -SIDE 1 SELECT
16 -MOTOR ENABLE 1 34 DISK CHANGE

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2.2.5 CRT Connector (VGA1)
VGA1 is a standard 10 pin header connector commonly used for VGA.
1 9
2 10
2.2.6 USB Connector (USB1)
The Universal Serial Bus (USB) controller is USB V1.1 and Universal HCI V1.1 compliant. The Universal Serial
Bus (USB) standard is a low-to-medium speed interface for the connection of PC peripherals, which gives
complete Plug & Play, and hot attach/detach for up to 127 external devices.
USB is a leading edge technology that allows the user to quickly and easily add a wide range of peripheral devices
from printers to keyboards and telephony devices to fax/modems. Universal Host Controller Interface (UHCI) and
future support for the Open Host Controller Interface (OHCI) ensure USB compatibility and usability well into the
future.
The CPU board supports two Universal Serial Bus ports. If the USB ports are installed, the USB Controller line in
the Integrated Peripherals section of the CMOS Setup utility must be set to “Enabled”. USB ports may also require
Operating System support for USB devices.
 USB1
1 2 3 4
5 6 7 8 1.VCC
2.DATA0+
3.DATA0-
4.GND
5.VCC
6.DATA1+
7.DATA1-
8.GND
Pin # Signal Name Pin # Signal Name
1 RED 6 AGND
2 AGND 7 V.S
3 GREEN 8 DDCD
4 GND 9 H.S
5 BLUE 10 DDCK

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2.2.7 LCD Header (LCD1)
1 43
2 44
LCD1 Voltage Select (J1)
 (LCD1) Bit VOLTAGE SELECT
1
3
5
2
4
6
Pin # Signal Name Pin # Signal Name
1 GND 23 G6
2 FPSCLK 24 G7
3 GND 25 R0
4 HSYNC 26 R1
5 VSYNC 27 GND
6 GND 28 R2
7 B0 29 R3
8 B1 30 R4
9 B2 31 R5
10 B3 32 R6
11 B4 33 R7
12 B5 34 GND
13 GND 35 LCDVDD
14 B6 36 LCDVDD
15 B7 37 +12V
16 G0 38 +12V
17 G1 39 GND
18 G2 40 GND
19 G3 41 FPEN
20 GND 42 DE
21 G4 43 VBIASEN
22 G5 44 VDDEN
Jumper Voltage
1-3
2-4 VCC 3
3-5
4-6 VCC (Factory Preset)

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2.2.8 Serial Port (COM1, COM2)
 AR-B1662 is equipped with two serial ports. COM1 is a standard RS-232 interface.
 COM2 use an adapter cable to interface with external equipment.
A. COM1
USEDRS232
COM1
9
8
7
6
5
4
3
21
B. COM2
USED RS232
1
2
9
10
1.DCD
2.DSR
3.RX
4.RTS
5.TX
6.CTS
7.DTR
9.GND
8.RI
2.2.9 Fan Power Connector (JFAN1, JFAN2)
JFAN1, JFAN2 is 3-pin header for the CPU fan. The fan must be a 12V fan.
321
1. GND
2. +12V
3. Fan Speed
2.2.10 Internal Buzzer (U7)
1+ 2-
2.2.11 Power/HD LED (LED11)
1
2
1: Power LED
2: HDD LED
Power LED: External LED connector for Watchdog status indication.
HDD LED (IDE1): External LED connector for primary IDE channel.

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2.2.12 LAN LED (LED4, LED5, LED6, LED7)
1
3
2 2:10M
1:100M
3:ACTIVE
2.2.13 Ethernet RJ-45 Connector (LAN1, LAN2, LAN3, LAN4)
The system supports onboard network connectivity. To utilize this function, install the network driver from the
utility diskette, and connect the cable to the following RJ-45 header.
1
8
PIN (CN8) FUNCTION
1 TPTX+
2 TPTX -
3 TPRX+
4 Not Used
5 Not Used
6 TPRX-
7 Not Used
8 Not Used
2.2.14 Reset Button (RST1)
SW
SW PUSHBUTTON
12
2.2.15 Power Button (PWBTN1)
SW
SW PUSHBUTTON
12
2.2.16 Power Connector (PWR2)
The PWR2 is a 4-pin mini dim power connector.
3
8
5
6
PWR3
KB-PS/2MINIDING6F_D90
35
68
GNDGND
+5V+12V

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1 2 3
2.2.17 Support Riser Card (J8)
This 3-pins jumper will decide the BUS1 support a PCI CARD or a Riser Card (such AR-B1550).
2.2.18 GPIO Port (CN1)
19
20
1
2
Users could test GPIO function under ‘Debug’ program as follow:
C:>debug
O 78 01H
Generally, the CN2 Pin2 will be High Level, others output pin are Low Level.
I 78
FC
Generally, suppose that CN2’s Pin1 and Pin3 are High Level then will show “FC”
2.2.19 Mini PCI Slot (PCI2)
On board one mini PCI slot (PCI2)
Jumper Function
1-2 For Riser Card
2-3 Factory Preset
PIN Signal PIN Signal
1 GPIO 2 GPO0
3 GPI1 4 GPO1
5 GPI2 6 GPO2
7 GPI3 8 GPO3
9 GPI4 10 GPO4
11 GPI5 12 GPO5
13 GPI6 14 GPO6
15 GPI7 16 GPO7
17 NONE 18 NONE
19 VCC5 20 GND

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2.2.20 Compact Flash Slot (CF1)
Pin assignment is showed below.
2.2.21 CF Master/Slave Mode Select (J102)
This 2-pins jumper will decide the CF operating in master/slave mode.
2.2.22 Clear CMOS Jumper (J103)
1 2 3
Jumper Function
Open (Factory Preset) Slave
Short Master
Jumper Function
1-2 Clear Data
2-3 Keep Data (Factory Preset)

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3. CRT/LCD FLAT PANEL DISPLAY
This chapter describes the configuration and installation procedures for LCD & CRT displays. The following topics
are covered:
 CRT Connector
 LCD Flat Panel Displays
※DON’T SUPPORT EXTERNAL VGA CARD
3.1 CRT CONNECTOR (CRT1)
The AR-B1662 supports CRT color monitors. It uses an onboard VGA chipset and you can use the VGA RAM
2.4 or 8 MB. For different VGA display modes, your monitor must possess certain characteristics (the right drivers)
to display the mode you want.
To connect to a CRT monitor, an adapter cable has to be connected to the VGA connector. VGA is used to
connect with a VGA monitor when you are using the on-board VGA controller as a display adapter. Pin assignments
for the VGA connector are as follows:
1 9
2 10
CRT1: CRT Connector
3.2 LCD FLAT PANEL DISPLAYS (OPTIONAL)
AR-B1662 needs different BIOS with LCD module when Connecting AR-B1662 to different LCD resolution. It does
not contain LCD module default. Please visit our web site (www.acrosser.com) or contact with our technical
support department ([e-mail]) for supports of LCD connecting.
Pi
n # Signal
Name Pin # Signal Name
1 RED 6 AGND
2 AGND 7 V.S
3 GREEN 8 DDCD
4 GND 9 H.S
5 BLUE 10 DDCK

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4. WATCHDOG TIMER
This section describes the use of Watchdog Timer, including disable, enable, and trigger. AR-B1662 is equipped
with a programmable time-out period watchdog timer that occupies I/O port 443H. Users can use simple program to
enable the watchdog timer. Once you enable the watchdog timer, the program should trigger it every time before it
times out. Watchdog Timer will generate a response (system or IRQ) due to system fails to trigger or disable
watchdog timer before preset timer, times out.
Watchdog
Register
Time Base
Counter and
Compartor
RESET
Enable(D7)
Time Factor
(D0-D5)
Write and
Trigger
Watchdog Block Diagram
4.1 WATCHDOG TIMER SETTING
The watchdog timer is a circuit that maybe be used from your program software to detect crash or hang up.
The Watchdog timer is automatically disabled after reset. Once you enabled the watchdog timer, your program
should trigger the watchdog timer every time before it times out. After you trigger the watchdog timer, the timer will
be set to zero and start to count again. If your program fails to trigger the watchdog timer before times out, it will
generate a reset pulse to reset the system or trigger the IRQ 9 signal in order to tell your system that the watchdog
time is out.
Please refer to the following table in order to properly program Watchdog function
D7 D6 D5 D4 D3 D2 D1 D0
1 Enable Reset
0 Disable IRQ 9
Timeperiod
Users could test watchdog function under ‘Debug’ program as follows:
C:>debug
 O 443 C8H
Generally, watchdog function would reset system after 8 seconds
 O 443 0H
Disable watchdog function
C:>debug
 O 443 88H
Generally, watchdog function would generate IRQ 9 after 8 seconds
 O 443 0H
Disable watchdog function
4.2 WATCHDOG TIMER TRIGGER
After you enable the watchdog timer, your program must write the same factor as triggering to the watchdog timer
at least once during every time-out period. You can change the time-out period by writing another timer factor to the
watchdog register at any time, and you must trigger the watchdog during every new time-out period in next trigger.

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5. BIOS CONSOLE
This chapter describes the AR-B1662 BIOS menu displays and explains how to perform common tasks needed to
get up and running, and presents detailed explanations of the elements found in each of the BIOS menus. The
following topics are covered:
 BIOS Setup Overview
 Standard CMOS Setup
 Advanced CMOS Setup
 Advanced Chipset Setup
 Power Management Setup
 PCI/Plug and Play Setup
 Peripheral Setup
 Hardware Monitor Setup
 Auto-Detect Hard Disks
 Change User Password
 Auto configuration with Optimal Settings
 Auto configuration with Fail Save Settings
 Save Settings and Exit
 Exit Without Saving
5.1 BIOS SETUP OVERVIEW
The BIOS is a program used to initialize and set up the I/O system of the computer, which includes the ISA bus
and connected devices such as the video display, diskette drive, and the keyboard.
The BIOS provides a menu-based interface to the console subsystem. The console subsystem contains special
software, called firmware that interacts directly with the hardware components and facilitates interaction between
the system hardware and the operating system.
The BIOS default values ensure that the system will function at its normal capability. In the worst situation the user
may have corrupted the original settings set by the manufacturer.
After the computer is turned on, the BIOS will perform diagnostics on the system and display the size of the
memory that is being tested. Press the [Del] key to enter the BIOS Setup program, and then the main menu will
show on the screen.
The BIOS Setup main menu includes some options. Use the [Up/Down] arrow key to highlight the option that you
wish to modify, and then press the [Enter] key to select the option and configure the functions.
Setup Main Menu

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CAUTION:
1. AR-B1662 BIOS the factory-default setting is used to the <Auto Configuration with Optimal Settings>.
Acrosser recommends using the BIOS default setting, unless you are very familiar with the setting function, or
you can contact the technical support engineer.
2. If the BIOS settings are lost, the CMOS will detect the <Auto Configuration with Fail Safe Settings> to boot the
operation system, this option will reduce the performance of the system. Acrosser recommends choosing the
<Auto Configuration with Optimal Setting> in the main menu. This option gives best-case values that should
optimize system performance.
3. The BIOS settings are described in detail in this section.
5.2 STANDARD CMOS SETUP
The <Standard CMOS Setup> option allows you to record some basic system hardware configuration and set the
system clock and error handling. If the CPU board is already installed in a working system, you will not need to
select this option anymore.
Standard CMOS Setup
Date & Time Setup
Highlight the <Date> field and then press the [Page Up] /[Page Down] or [+]/[-] keys to set the current date.
Follow the month, day and year format.
Highlight the <Time> field and then press the [Page Up] /[Page Down] or [+]/[-] keys to set the current date.
Follow the hour, minute and second format.
The user can bypass the date and time prompts by creating an AUTOEXEC.BAT file. For information on how to
create this file, please refer to the MS-DOS manual.
Hard Disk Setup
The BIOS supports various types for user settings, The BIOS supports < Pri Master>, < Pri Slave>so the user can
install up to two hard disks. For the master and slave jumpers, please refer to the hard disk’s installation
descriptions and the hard disk jumper settings in section three of this manual.
<Sec Master>, <Sec Slave> is reserved to Compact Flash, user can set CF in master mode or slave mode by J102
You can select <AUTO> under the <TYPE> and <MODE> fields. This will enable auto detection of your IDE
drives during boot-up. This will allow you to change your hard drives (with the power off) and then power on
without having to reconfigure your hard drive type. If you use older hard disk drives, which do not support this
feature, then you must configure the hard disk drive in the standard method as described above by the <USER>
option.

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Floppy Setup
The <Standard CMOS Setup> option records the types of floppy disk drives installed in the system.
To enter the configuration value for a particular drive, highlight its corresponding field and then select the drive type
using the left-or right-arrow key.
Boot Sector Virus Protection
This option protects the boot sector and partition table of your hard disk against accidental modifications. Any
attempt to write to them will cause the system to halt and display a warning message. If this occurs, you can
either allow the operation to continue or use a bootable virus-free floppy disk to reboot and investigate your system.
The default setting is <Disabled>. This setting is recommended because it conflicts with new operating systems.
Installation of new operating systems requires that you disable this to prevent write errors.
5.3 ADVANCED CMOS SETUP
The <Advanced CMOS Setup> option consists of configuration entries that allow you to improve your system
performance, or let you set up some system features according to your preference. Some entries here are
required by the CPU board’s design to remain in their default settings.