Acrosser AR-B1551 User Manual

AR-B1551

INDUSTRIAL GRADE

CPU BOARD

User’ s Guide

Edition: 1.32

Book Number: AR-B1551-02.0807

AR-B1551 User’s Guide

Table of Contents

0. PREFACE ......................................................................................................................................3

0.1 COPYRIGHT NOTICE AND DISCLAIMER......................................................................................................................................3

0.2 WELCOME TO THE AR-B1551 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. OVERVIEW...................................................................................................................................5

1.1 SPECIFICATION..............................................................................................................................................................................5

1.2 PACKING LIST.................................................................................................................................................................................6

1.3 FEATURES ......................................................................................................................................................................................6

2. SYSTEM CONTROLLER ............................................................................................................7

2.1 MICROPROCESSOR.......................................................................................................................................................................7

2.2 DMA CONTROLLER ........................................................................................................................................................................7

2.3 KEYBOARD CONTROLLER ............................................................................................................................................................8

2.4 INTERRUPT CONTROLLER ...........................................................................................................................................................8

2.4.1 I/O Port Address Map ................................................................................................................................................................9

2.4.2 Real-Time Clock and Non-Volatile RAM .................................................................................................................................10

2.4.3 Timer .......................................................................................................................................................................................10

2.5 SERIAL PORT................................................................................................................................................................................11

2.6 PARALLEL PORT ..........................................................................................................................................................................13

3. SETTING UP THE SYSTEM .....................................................................................................15

3.1 OVERVIEW ....................................................................................................................................................................................15

3.2 SYSTEM SETTING ........................................................................................................................................................................15

3.2.1 Hard Disk (IDE) Connector......................................................................................................................................................16

3.2.2 FDD Port Connector (FDD) .....................................................................................................................................................16

3.2.3 Network Setting (LAN1)...........................................................................................................................................................17

3.2.4 PS/2 KB/Mouse Connector (KM).............................................................................................................................................17

3.2.5 Compact Flash Connector (CF1)................................................................................................................................................17

3.2.6 Reset Header (RST)................................................................................................................................................................18

3.2.7 Power Connector (PWR4, PWR8)...........................................................................................................................................18

3.2.8 CRT Connector (CRT).............................................................................................................................................................18

3.2.9 LCD Supported Voltage Select (JP2) ......................................................................................................................................19

3.2.10 LCD Panel Display Connector (LCD1) ..................................................................................................................................19

3.2.11 LED Header (LED1) ..............................................................................................................................................................19

3.2.12 USB Connector(USB1)..........................................................................................................................................................20

3.2.13 PC104 Connector ..................................................................................................................................................................20

3.2.14 Parallel Port Connector (LPT) ...............................................................................................................................................21

3.2.15 IR. Header (IR) ......................................................................................................................................................................22

3.2.16 Ext. Battery (JP5) ..................................................................................................................................................................22

3.2.17 Battery Jumper (JP1).............................................................................................................................................................22

3.2.18 COM1, COM2 (COM1, COM2 ).............................................................................................................................................22

3.2.19 Touch Screen Connector (T.S.1 & T.S.2)..............................................................................................................................23

3.2.20 D.O.C. Memory Address Select (JP4)...................................................................................................................................23

3.2.21 26-Pin Audio Connector (AUDIO1)........................................................................................................................................24

3.2.22 LVDS Connector (LVDS1).....................................................................................................................................................24

3.2.23 LVDS Supported Voltage Select (JP3)..................................................................................................................................24

3.3 WATCHDOG TIMER ......................................................................................................................................................................25

3.3.1 Watchdog Timer Setting ..........................................................................................................................................................25

3.3.2 Watchdog Timer Trigger..........................................................................................................................................................26

4. INSTALLATION.........................................................................................................................27

4.1 OVERVIEW ....................................................................................................................................................................................27

4.2 UTILITY DISKETTE........................................................................................................................................................................27

4.2.1 Driver Installation.....................................................................................................................................................................27

5. BIOS CONSOLE.........................................................................................................................29

5.1 BIOS SETUP OVERVIEW..............................................................................................................................................................29

5.2 STANDARD CMOS SETUP ...........................................................................................................................................................30

5.3 BIOS FEATURES SETUP..............................................................................................................................................................31

5.4 CHIPSET FEATURES SETUP.......................................................................................................................................................33

5.5 PNP/PCI CONFIGURATION ..........................................................................................................................................................34

5.6 LOAD DEFAULT SETTING............................................................................................................................................................34

5.6.1 Load BIOS Defaults.................................................................................................................................................................34

5.6.2 Load Setup Defaults ................................................................................................................................................................34

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AR-B1551 User’s Guide

5.7 INTEGRATED PERIPHERALS ......................................................................................................................................................35

5.8 PASSWORD SETTING ..................................................................................................................................................................36

5.8.1 Setting Password.....................................................................................................................................................................36

5.8.2 Password Checking.................................................................................................................................................................36

5.9 IDE HDD AUTO DETECTION ........................................................................................................................................................36

5.10 BIOS EXIT ....................................................................................................................................................................................36

5.10.1 Save & Exit Setup..................................................................................................................................................................36

5.10.2 Exit Without Saving ...............................................................................................................................................................36

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AR-B1551 User’s Guide

0.PREFACE

0.1 COPYRIGHT NOTICE AND DISCLAIMER

April 2001

This document is copyrighted, 2001, 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 of original manufacturer.
Acrosser Technology assumes no responsibility or warranty with respect to the contents in this manual and
specifically disclaims any implied warranties 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
Possession, use, or copying of the software described in this publication is authorized only pursuant to a valid
written license from Acrosser or an authorized sub licensor.

ACKNOWLEDGEMENTS

Acrosser, AMI, IBM PC/AT, ALI, Windows 3.1, MS-DOS, …are registered trademarks.
All other trademarks and registered trademarks are the property of their respective holders.

0.2 WELCOME TO THE AR-B1551 CPU BOARD

This guide introduces the Acrosser AR-B1551 CPU board.
The information provided in this manual describes this card’s functions and features. It also helps you start, set up
and operate your AR-B1551. General system information can also be found in this publication.

) as soon as possible.

0.3 BEFORE YOU USE THIS GUIDE

Please refer to the Chapter 3, “Setting Up The System” in this guide, if you have not already installed AR-B1551.
Check the packing list before you install and make sure the accessories are completely included.

The AR-B1551 CD provides the newest information regarding the CPU card. Please refer to the files of the
enclosed utility CD. It contains the modification, hardware & software information, and it has updated to product

functions that may not be mentioned here.

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 packaging for this purpose.

You can assure efficient servicing for your product by following these guidelines:

1. Include your name, address, daytime telephone and facsimile numbers and E-mail.

2. A description of the system configuration and/or software at the time is malfunction,

3. A brief description of the problem occurred.

0.5 TECHNICAL SUPPORT AND USER COMMENTS

User’s 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.
In any case, we believe that information that you provide in anyway 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]

Check our FAQ sheet for quick fixes to known technical problems.

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AR-B1551 User’s Guide

0.6 ORGANIZATION

This manual covers the following topics (see the Table of Contents for a detailed listing):

 Chapter 1, “Overview”, provides an overview of the system features and packing list.
 Chapter 2, “System Controller” describes the major structure.
 Chapter 3, “Setting Up the System”, describes how to adjust the jumper, and the connector’s settings.
 Chapter 4, “Installation”, describes setup procedures including information on the utility diskette.
 Chapter 5, “BIOS Console”, provides the BIOS options settings.

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. Therefore, it is 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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AR-B1551 User’s Guide

1. OVERVIEW

This is a AR-B1551 Pentium Grade CPU Board with VGA, Ethernet, SSD, LCD, Audio.
This chapter provides an overview of your system features and capabilities. The following topics are covered:



Specification



Packing List



Features

1.1 SPECIFICATION



CPU: Cyrix GX1 BGA 300MHz.



Chipset: Cyrix CS5530A.



RAM Memory: Support 1xSODIMM socket ,28MB maximum.



SSD: Compact Flash Interface X 1.



Watchdog: Sofeware programmable 1~63sec.



VGA Display: GX1 UMA.

CRT-with HDB 15-pin connector.

LCD with 2.0 mm 44-pin Header.
LVDS Interface with 2mm 26-pin Header.



Ethernet: RTL8139C chipset, supports 10/100M baseT with RJ-45 connector built-in LED.



Audio: CS5530A on-chip AC97 compatible audio with 2mm 26-pin Box Header on board.



Super I/O: Winbond 83977TF

1 EIDE (Ultra DMA33)– with one 2.00 mm 44-pin connector
1 FDC – with 2.54 mm 34-pin connector.
1 Parallel – with 2.54 mm 26-pin connector (supports SPP/EPP/ECP mode).
1 RS-232C – with DB-9 connector located at the bracket.
1 RS-232C/RS485 /IrDA/Touch Screen – with 2.54 mm 10-pin connector

RS-232C is selectable by jumper and use the same connector.
IrDA with 2.54mm 5-pin header.

Touch Screen uses 2.0mm 3-pin JST connector.



USN: A specific Universal Serial Number is attached for hardware identification (accomplished by
Dallas DS2401 Silicon Serial Number).



BIOS: Flash BIOS Award.



Keyboard/Mouse: PS/2 compatible 6-pin mini-DIN connector located at bracket.



USB: Built-in 2 ports USB interface with 2.54mm 10-pin headers.



RTC: Chipset included, Supports ACPI function with 10 years data retention.



Speaker: Supports on-board buzzer.



LED Indicators: Power LED, LAN LED at LAN Port.



Expansion Bus: PC/104.



Power Connector: One 8-pin 2.5mm JST, 4-pin 5.08mm wafer connector.



Power Req.: +5V-3.0A maximum and 12V –0.5A maximum.



CE Design-in: Add EMI components to COM ports, Parallel port, CRT, USB, Keyboard, and PS/2
mouse.



PC Board: 8 layers, EMI considered. Especially in switching power layout.



Dimensions: 145 mm x 102 mm (5.7” x 4”).

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AR-B1551 User’s Guide

1.2 PACKING LIST

Some accessories are included with the system. Before you begin installing your AR-B1551 board, take a moment
to make sure that the following items have been included inside the AR-B1551 package.



The quick setup manual



1 AR-B1551 all-in-one single CPU board



1 Hard disk drive interface cable



1 Floppy interface cable



1 Audio Adapter cable



1 LPT cable



Acrosser’s AR-B9425 audio card



Software Utility CD

1.3 FEATURES

The system provides a number of special features that enhance its reliability, ensure its long-term availability, and
improve its expansion capabilities, as well as its hardware structure.



CPU NS GEODE GX1



Cyrix CS5530A Chipset



1xSODIMM



Supports DOC Flash Disk



Audio (AC97)



10/100M-Base Ethernet



Compact Flash (optional)



AWARD Flash BIOS



Power Req.: +5V-3.0A maximum and 12V –0.5A maximum.



Dimensions: 145 mm x 102 mm (5.7”x4”).

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AR-B1551 User’s Guide

2. SYSTEM CONTROLLER

This chapter describes the main structure of the AR-B1551 CPU board. The following topics are covered:

 Microprocessors
 DMA Controller
 Keyboard Controller
 Interrupt Controller
 Serial Port
 Parallel Port

2.1 MICROPROCESSOR

The AR-B1551 uses the NS GEODE GX1 CPU, it is an advanced 32-bit x86 compatible processor offering high
performance, fully accelerated 2D graphics, a 64-synchronous DRAM controller and a PCI bus controller, all on a
single chip. This latest generation of the MediaGX processor enables a new class of premium performance
notebook/desktop, and IPC computer designs.
The MediaGX MMX enhanced processor companion chips provide advanced video and audio functions and permit
direct interface to memory. This high-performance 64-bit processor is x86 instruction set compatible and supports
MMX technology.
This processor is the latest member of the NS MediaGX family, offering high performance, fully accelerated 2D
graphics, synchronous memory interface and a PCI bus controller, all on a single chip. As described in separate
manuals, the CS5520 and the CS5530 I/O Companion chips fully enable the features of the MediaGX processor
with MMX support. These features include full VGA and VESA video, 16-bit stereo sound, IDE interface, ISA
interface, SMM power management, and AT compatibility logic. In addition, the newer CS5530 provides an Ultra
DMA/33 interface, MPEG2 assist, and is AC97 Version 2.0 audio compliant.
In addition to the advanced CPU features, the MediaGX processor integrates a host of functions, which are
typically implemented with external components. A full-function graphics accelerator provides pixel processing and
rendering functions.
The NS MediaGX MMX-Enhanced Processor represents a new generation of x86-compatible 64-bit
microprocessors with sixth-generation features. The decoupled load/store unit (within the memory management
unit) allows multiple instructions in a single clock cycle. Other features include single-cycle execution, single-cycle
instruction decode, 16KB write-back cache, and clock rates up to 266MHz. These features are possible by the use
of advanced-process technologies and superpipelining.

2.2 DMA CONTROLLER

The equivalent of two 8237A DMA controllers are implemented on the AR-B1551 board. Each controller is a four­channel DMA device that will generate the memory addresses and control signals necessary to transfer
information directly between a peripheral device and memory. This allows high-speed information transfer with less
CPU intervention. The two DMA controllers are internally cascaded to provide four DMA channels for transfers to
8-bit peripherals (DMA1) and three channels for transfers to 16-bit peripherals (DMA2). DMA2 channel 0 provides
the cascade interconnection between the two DMA devices, thereby maintaining IBM PC/AT compatibility.

The Following is the system information for the DMA channels:

Slave with four 8-bit chnls Master with three 16-bit chnls

DMA Controller 1 DMA Controller 2

Channel 0: Spare Channel 4(0): Cascade for controller 1

Channel 1: IBM SDLC Channel 5(1): Spare

Channel 2: Diskette adapter Channel 6(2): Spare

Channel 3: Spare Channel 7(3): Spare

DMA Channel Controller

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AR-B1551 User’s Guide

2.3 KEYBOARD CONTROLLER

The 8042 processor is programmed to support the keyboard serial interface. The keyboard controller receives
serial data from the keyboard, checks its parity, translates scan codes, and presents it to the system as a byte data
in its output buffer. The controller can interrupt the system when data is placed in its output buffer, or wait for the
system to poll its status register to determine when data is available.

Data can be written to the keyboard by writing data to the output buffer of the keyboard controller.

Each byte of data is sent to the keyboard controller in a series with an odd parity bit automatically inserted. The
keyboard controller is required to acknowledge all data transmissions. Therefore, another byte of data will not be
sent to keyboard controller until acknowledgment is received for the previous byte sent. The “output buffer full”
interruption may be used for both send and receive routines.

2.4 INTERRUPT CONTROLLER

The equivalent of two 8259 Programmable Interrupt Controllers (PIC) are included on the AR-B1551 board. They
accept requests from peripherals, resolve priorities on pending interrupts in service, issue interrupt requests to the
CPU, and provide vectors which are used as acceptance indices by the CPU to determine which interrupt service
routine to execute. These two controllers are cascaded with the second controller representing IRQ8 to IRQ15,
which is rerouted through IRQ2 on the first controller.

The following is the system information of interrupt levels:

Interrupt Level Description

NMI Parity check
CTRL1
IRQ0
IRQ1

IRQ2

CTRL2

System timer interrupt from timer 8254

keyboard output buffer full
Rerouting to IRQ8 to IRQ15

IRQ8:Real time clock
IRQ9:Reserved
IRQ10:LAN adapters(based on PCI INT routing)
IRQ12:Reserved for PS/2 mouse
IRQ13:Math.Co-processor
IRQ14:Hard disk adapter
IRQ15:Hard disk adapter

IRQ3 Serial port(depends on setup assignment)
IRQ4 Serial port(depends on setup assignment)
IRQ5 Reserved
IRQ6 Reserved for floppy disk adapter
IRQ7 Parallel port 1

Interrupt Controller

8

2.4.1 I/O Port Address Map

Hex Range Device

000-01F DMA controller 1
020-021 Interrupt controller 1
022-023 Cyrix CS5530
040-04F Timer 1
050-05F Timer 2
060-06F 8042 keyboard/controller
070-071 Real-time clock (RTC), non-maskable interrupt (NMI)
080-09F DMA page registers

0A0-0A1 Interrupt controller 2

0C0-0DF DMA controller 2

0F0 Clear Math Co-processor
0F1 Reset Math Co-processor

0F8-0FF Math Co-processor

170-178 Reserved for Fixed disk 1

1F0-1F8 Fixed disk 0

201 Reserved for Game port

208-20A EMS register 0

210-213 SSD

214 WatchDog
218-21A EMS register 1
278-27F Parallel printer port (depends on setup assignment)

290-293 SSD

2E8-2EF Serial port (depends on setup assignment)

2F8-2FF Serial port (depends on setup assignment)

300-31F Prototype card/streaming type adapter
320-33F Reserved
378-37F Parallel printer port (depends on setup assignment)
380-38F SDLC, bisynchronous

3A0-3AF Bisynchronous
3B0-3BF Monochrome display and printer port 3 (LPT 3)
3C0-3CF EGA/VGA adapter
3D0-3DF Color/graphics monitor adapter
3E8-3EF Serial port 3 (depends on setup assignment)

3F0-3F7 Reserved for diskette controller
3F8-3FF Serial port (depends on setup assignment)

AR-B1551 User’s Guide

I/O Port Address Map

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AR-B1551 User’s Guide

2.4.2 Real-Time Clock and Non-Volatile RAM

The AR-B1551 contains a real-time clock compartment that maintains the date and time in addition to storing
configuration information about the computer system. It contains 14 bytes of clock and control registers and
114 bytes of general purpose RAM. Because of the use of CMOS technology, it consumes very little power
and can be maintained for long periods of time using an internal Lithium battery. The contents of each byte in
the CMOS RAM are listed as follows:

Address Description

00 Seconds
01 Second alarm
02 Minutes
03 Minute alarm
04 Hours
05 Hour alarm
06 Day of week
07 Date of month
08 Month
09 Year
0A Status register A

0B Status register B
0C Status register C
0D Status register D
0E Diagnostic status byte
0F Shutdown status byte

10 Diskette drive type byte, drive A and B

11 Fixed disk type byte, drive C

12 Fixed disk type byte, drive D

13 Reserved

14 Equipment byte

15 Low base memory byte

16 High base memory byte

17 Low expansion memory byte

18 High expansion memory byte

19-2D Reserved
2E-2F 2-byte CMOS checksum

30 Low actual expansion memory byte

31 High actual expansion memory byte

32 Date century byte

33 Information flags (set during power on)

34-7F Reserved for system BIOS

Real-Time Clock & Non-Volatile RAM

2.4.3 Timer

The AR-B1551 provides three programmable timers, each with a timing frequency of 1.19 MHz.

Timer 0 The output of this timer is tied to interrupt request 0. (IRQ 0)

Timer 1 This timer is used to trigger memory refresh cycles.

Timer 2 This timer provides the speaker tone.

Application programs can load different counts into this timer to generate various sound frequencies.

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AR-B1551 User’s Guide

2.5 SERIAL PORT

The ACEs (Asynchronous Communication Elements ACE1 to ACE4) are not only used to convert parallel data to a
serial format on the transmit side but also used to convert serial data to parallel on the receiver side. The serial
format, in order of transmission and reception, is a start bit, followed by five to eight data bits, a parity bit (if
programmed) and one, 1.5 (in a five-bit format only) or two stop bits (in a 6,7, or 8-bit format). The ACEs are
capable of handling divisors of 1 to 65535, and produce a 16x clock for driving the internal transmitter logic.

The provision is not only included the use of this 16x clock to drive the receiver logic. But also included in the ACE
as a completed MODEM control capability, and a processor interrupt system that may be software tailored to the
computing time required to handle the communications link.

The following table is a summary of each ACE accessible register

DLAB Port Address Register

Receiver buffer (read) 0 base + 0
Transmitter holding register (write)

0 base + 1 Interrupt enable
X base + 2 Interrupt identification (read only)
X base + 3 Line control
X base + 4 MODEM control
X base + 5 Line status
X base + 6 MODEM status
X base + 7 Scratched register

1 base + 0 Divisor latch (least significant byte)

1 base + 1 Divisor latch (most significant byte)

ACE Accessible Registers

(1) Receiver Buffer Register (RBR)

Bit 0-7: Received data byte (Read Only)

(2) Transmitter Holding Register (THR)

Bit 0-7: Transmitter holding data byte (Write Only)

(3) Interrupt Enable Register (IER)

Bit 0: Enable Received Data Available Interrupt (ERBFI)
Bit 1: Enable Transmitter Holding Empty Interrupt (ETBEI)
Bit 2: Enable Receiver Line Status Interrupt (ELSI)
Bit 3: Enable MODEM Status Interrupt (EDSSI)
Bit 4: Must be 0
Bit 5: Must be 0
Bit 6: Must be 0
Bit 7: Must be 0

(4) Interrupt Identification Register (IIR)

Bit 0: “0” if Interrupt Pending
Bit 1: Interrupt ID Bit 0
Bit 2: Interrupt ID Bit 1
Bit 3: Must be 0
Bit 4: Must be 0
Bit 5: Must be 0
Bit 6: Must be 0
Bit 7: Must be 0

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AR-B1551 User’s Guide

(5) Line Control Register (LCR)

Bit 0: Word Length Select Bit 0 (WLS0)
Bit 1: Word Length Select Bit 1 (WLS1)

WLS1 WLS0 Word Length

0 0 5 Bits
0 1 6 Bits
1 0 7 Bits

1 1 8 Bits
Bit 2: Number of Stop Bit (STB)
Bit 3: Parity Enable (PEN)
Bit 4: Even Parity Select (EPS)
Bit 5: Stick Parity
Bit 6: Set Break
Bit 7: Divisor Latch Access Bit (DLAB)

(6) MODEM Control Register (MCR)

Bit 0: Data Terminal Ready (DTR)
Bit 1: Request to Send (RTS)
Bit 2: Out 1 (OUT 1)
Bit 3: Out 2 (OUT 2)
Bit 4: Loop
Bit 5: Must be 0
Bit 6: Must be 0
Bit 7: Must be 0

(7) Line Status Register (LSR)

Bit 0: Data Ready (DR)
Bit 1: Overrun Error (OR)
Bit 2: Parity Error (PE)
Bit 3: Framing Error (FE)
Bit 4: Break Interrupt (BI)
Bit 5: Transmitter Holding Register Empty (THRE)
Bit 6: Transmitter Shift Register Empty (TSRE)
Bit 7: Must be 0

(8) MODEM Status Register (MSR)

Bit 0: Delta Clear to Send (DCTS)
Bit 1: Delta Data Set Ready (DDSR)
Bit 2: Training Edge Ring Indicator (TERI)
Bit 3: Delta Receive Line Signal Detect (DSLSD)
Bit 4: Clear to Send (CTS)
Bit 5: Data Set Ready (DSR)
Bit 6: Ring Indicator (RI)
Bit 7: Received Line Signal Detect (RSLD)

(9) Divisor Latch (LS, MS)

LS MS

Bit 0: Bit 0 Bit 8
Bit 1: Bit 1 Bit 9
Bit 2: Bit 2 Bit 10
Bit 3: Bit 3 Bit 11
Bit 4: Bit 4 Bit 12
Bit 5: Bit 5 Bit 13
Bit 6: Bit 6 Bit 14
Bit 7: Bit 7 Bit 15

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AR-B1551 User’s Guide

Desired Baud Rate Divisor Used to Generate 16x Clock

300 384

600 192
1200 96
1800 64
2400 48
3600 32
4800 24
9600 12

14400 8
19200 6
28800 4
38400 3
57600 2

115200 1

Serial Port Divisor Latch

2.6 PARALLEL PORT

(1) Register Address

Port Address Read/Write Register

base + 0 Write Output data
base + 0 Read Input data
base + 1 Read Printer status buffer
base + 2 Write Printer control latch

Registers’ Address

(2) Printer Interface Logic

The parallel port of the W83977F-A is for attaching various devices that accept eight bits of parallel data at
standard TTL level.

(3) Data Swapper

The system microprocessor can read the contents of the printer’s Data Latch through the Data Swapper by reading
the Data Swapper address.

(4) Printer Status Buffer

The system microprocessor can read the printer status by reading the address of the Printer Status Buffer. The bit
definitions are described as follows:

12345670

XXX

NOTE: X presents not used.

Printer Status Buffer

-ERROR
SLCT
PE

-ACK

-BUSY

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AR-B1551 User’s Guide

A

Bit 7: This signal may become active during data entry, when the printer is off-line during printing, or when the

print head is changing position or in an error state. When Bit 7 is active, the printer is busy and cannot
accept data.

Bit 6: This bit represents the current state of the printer’s ACK signal. A0 means the printer has received the

character and is ready to accept another. Normally, this signal will be active for approximately 5
microseconds before receiving a BUSY message stops.

Bit 5: A1 means the printer has detected the end of the paper.

Bit 4: A1 means the printer is selected.

Bit 3: A0 means the printer has encountered an error condition.

(5) Printer Control Latch & Printer Control Swapper

The system microprocessor can read the contents of the printer control latch by reading the address of printer
control swapper. Bit definitions are as follows:

7

X X

5

6

3

4

1

2

0

STROBE

INIT
SLDC IN

IRQ ENABLE

DIR(write only)

Bit’s Definition

NOTE: X presents not used.

Direction control bit. When logic 1, the output buffers in the parallel port are disabled allowing data driven

Bit 5:

from external sources to be read; when logic 0, they work as a printer port. This bit is writing only.

Bit 4: A1 in this position allows an interrupt to occur when ACK changes from low state to high state.

Bit 3: A1 in this bit position selects the printer.

Bit 2: A0 starts the printer (50 microseconds pulse, minimum).

Bit 1: A1 causes the printer to line-feed after a line is printed.

Bit 0: A0.5 microsecond minimum highly active pulse clocks data into the printer. Valid data must be present for

a minimum of 0.5 microseconds before and after the strobe pulse.

UTO FD XT

14

AR-B1551 User’s Guide

3. SETTING UP THE SYSTEM

This section describes pin assignments for the system’s external connectors and the jumper settings.

 Overview
 System Setting

3.1 OVERVIEW

AR-B1551 is a Pentium Grade CPU Board with Ethernet, DOC, SSD, and Compact Flash (optional) functions. This
section provides the hardware’s jumper settings, the connectors’ locations, and the pin assignments. The #1 pin
assignments have all been designed on the right side of the board with a “block” indication on the diagram.

External System Location

3.2 SYSTEM SETTING

Jumper pins allow you to set specific system parameters. Set them by changing the pin location of jumper 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.

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.

15

AR-B1551 User’s Guide

3.2.1 Hard Disk (IDE) Connector

44-Pin Hard Disk (IDE) Connector (IDE1)

AR-B1551 also provides IDE interface 44-pin connector to connect with the hard disk device.

2

44

1

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

Hard Disk (IDE1) Connector

43

3.2.2 FDD Port Connector (FDD)

The AR-B1551 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.

33

34

Figure 0-1 CN3: FDD Port connector

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 GATE

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

Table 0-1 FDD Pin Assignment

16

1

2

AR-B1551 User’s Guide

3.2.3 Network Setting (LAN1)

The LAN1 RJ-45&LED headers are the standard network headers. The following table is the pin assignment.

18

PIN (CN12) FUNCTION

1 TPTX+
2 TPTX ­3 TPRX+
4 Not Used
5 Not Used
6 TPRX ­7 Not Used
8 Not Used

RJ-45 Pin Assignment

3.2.4 PS/2 KB/Mouse Connector (KM)

To use the PS/2 interface, the connector for the PS/2 KB/mouse is a Mini-DIN 6-pin connector. This adapter cable
is mounted on a bracket and is included in your AR-B1551 package. Pin assignments for the PS/2 port connector
are as follows:

1

2

3

5

4

6

1 KBDAT

2 MSDAT
3 GND
4 VCC
5 KBCLK
6 MSCLK

KM

6 Pin Mini-DIN

3.2.5 Compact Flash Connector (CF1)

-CFCD1
SD11
SD12
SD13
SD14
SD15

-CFCS1

-VS1

-IOR

-IOW

-CFWE
IRQ15

VCC
GND

Not Used

-CFRST

-IORDY

Not Used

-CFREG

-DASP

-PDIAG

SD10

GND --- -CFCD2

SD8
SD9

26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

CF1

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21

22
23
24
25

--- GND

--- SD3

--- SD4

--- SD5

--- SD6

--- SD7

--- -CFCS0

--- GND

--- GND

--- GND

--- GND

--- GND

---

--- GND

--- GND

--- GND

--- GND

--- SA2

--- SA1

--- SA0

--- SD0

--- SD1

--- SD2

--- -IO16

17

AR-B1551 User’s Guide

3.2.6 Reset Header (RST)

The RST is a reset switch. Shorting these two pins will reset the system.

SW2

1

2

SW PUSHBUTTON

3.2.7 Power Connector (PWR4, PWR8)

(1) 8-Pin Power Connector (PWR8)

PWR8 is an 8-pin power connector. You can directly connect the power supply to the onboard power connector for
stand-alone applications.

1 GND
2 +5 VDC
3 +5 VDC

1234

5678

4 GND
5 GND
6 +12 VDC
7 -12 VDC
8 -5 VDC

Figure 0-2 PWR8: 8-Pin Power Connector

(2) 4-Pin Power Connector (PWR4)

3.2.8 CRT Connector (CRT)

1 +12 VDC

2 GND

3 GND

4 +5 VDC

CN5

Figure 0-3 PWR4: 4-Pin Power Connector

CRT (CRT Connector)

1

2

3

4

5

11

15

10

CRT: CRT Connector

1 Red
2 Green
3 Blue
13 Horizontial
14 Vertical Sync
4, 9, & 11 Not used
5 & 10 Ground
6, 7 & 8 AGND
12 DDC DATA
15 DDC CLOCK

18

3.2.9 LCD Supported Voltage Select (JP2)

456

AR-B1551 User’s Guide

6

123

12345

5V3.3V

Factory Preset

Figure 0-4 JP2: LCD Supported Voltage Select

3.2.10 LCD Panel Display Connector (LCD1)

Attach a display panel connector to this 44-pin connector with pin assignments as shown below:

2

1

Figure 0-5 LCD1: LCD Display Connector

Pin Signal Pin Signal

1 GND 2 SHFCLK
3 GND 4 LP
5 FLM 6 GND
7 NC 8 NC

9 P0 (B0)(LSB) 10 P1 (B1)
11 P2 (B2) 12 P3 (B3)
13 GND 14 P4 (B4)
15 P5 (B5)(MSB) 16 NC
17 NC 18 P6 (G0)(LSB)
19 P7 (G1) 20 GND
21 P8 (G2) 22 P9 (G3)
23 P10 (G4) 24 P11 (G5)(MSB)
25 NC 26 NC
27 GND 28 P12 (R0)(LSB)
29 P13 (R1) 30 P14 (R2)
31 P15 (R3) 32 P16 (R4)
33 P17 (R5)(MSB) 34 GND
35 VCC 36 VCC
37 +12V 38 +12V
39 GND 40 GND
41 DE 42 ENABLK
43 GND 44 VEE

Table 0-2 LCD Display Pin Assignment

3.2.11 LED Header (LED1)

LED1

46

1325

1.HDLED+

2.HDLED-

3.CFLED+

4.CFLED-

5.P/WLED+

6.P/WLED-

19

AR-B1551 User’s Guide

A

A

A

A

A

A

A

A

A

3.2.12 USB Connector(USB1)

USB1

2 4 6 8 10

1 3 5 7 9

Pin Description Pin Description

1 USB1V 2 USB2V
3 USBD1F- 4 USBD2F­5 USBD1F+ 6 USBD2F+
7 GND 8 GND
9 CASE 10 CASE

3.2.13 PC104 Connector

(1) 64-Pin PC/104 Connector Bus A & B (PC1A)

2

1

-IOCHCK
SD7 --­SD6 --­SD5 --­SD4 --­SD3 --­SD2 --­SD1 --­SD0 ---

IOCHRDY-

AEN
SA19
SA18
SA17
SA16
SA15
SA14
SA13
SA12
SA11
SA10
SA9 --­SA8 --­SA7 --­SA6 --­SA5 --­SA4 --­SA3 --­SA2 --­SA1 --­SA0 --­GND

64-Pin PC/104 Connector

A1
A2
A3
A4
A5

6
7

8
A9
A10
A11
A12
A13
A14

15

16

17
A18
A19
A20
A21
A22
A23

24

25
A26
A27
A28
A29
A30
A31

32

Figure PC1A: 64-Pin PC/104 Connector Bus A & B

PC1A

1 2

B1

--- GND

B2

--- RSTDRV

B3

--- +5 VDC

B4

--- IRQ9

B5

--- -5 VDC

B6

--- DRQ2

B7

--- -12 VDC

B8

--- -ZWS

B9

--- +12

B10

--- KEY

B11

--- -SMEMW

B12

--- -SMEMR

B13

--- -IOW

B14

--- -IOR

B15

--- -DACK3

B16

--- DRQ3

B17

--- -DACK1

B18

--- DRQ1

B19

--- -REFRESH

B20

--- BUSCLK

B21

--- IRQ7

B22

--- IRQ6

B23

--- IRQ5

B24

--- IRQ4

B25

--- IRQ3

B26

--- -DACK2

B27

--- TC

B28

--- BALE

B29

--- +5

--- OSC

B30

--- GND

B31

--- GND

B32

64

63

20

(2) 40-Pin PC/104 Connector Bus C & D (PC1B)

1

2

40 Pin PC/104 Connector

PC1B

AR-B1551 User’s Guide

39

40

GND

SBHE

LA23
LA22
LA21
LA20
LA19
LA18
LA17

-MEMR

-MEMW
SD8
SD9

SD10
SD11
SD12
SD13
SD14
SD15

KEY

Figure PC1B: 40-Pin PC/104 Connector Bus C & D

C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20

D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20

3.2.14 Parallel Port Connector (LPT)

The connector for the parallel port is a 26 pins female connector.

25

26

Parallel Port Connector

CN8 DB-25 Signal CN8 DB-25 Signal

1 1 -Strobe 2 14 -Auto Form Feed
3 2 Data 0 4 15 -Error
5 3 Data 1 6 16 -Initialize
7 4 Data 2 8 17 -Printer Select In

9 5 Data 3 10 18 Ground
11 6 Data 4 12 19 Ground
13 7 Data 5 14 20 Ground
15 8 Data 6 16 21 Ground
17 9 Data 7 18 22 Ground
19 10 -Acknowledge 20 23 Ground
21 11 Busy 22 24 Ground
23 12 Paper 24 25 Ground
25 13 Printer Select 26 -- Not Used

Parallel Port Pin Assignments

D1

--- GND

D2

--- -MEMCS16

D3

--- -IOCS16

D4

--- IRQ10

D5

--- IRQ11

D6

--- IRQ12

D7

--- IRQ15

D8

--- IRQ14

D9

--- -DACK0

--- DRQ0

--- -DACK5

--- DRQ5

--- -DACK6

--- DRQ6

--- -DACK7

--- DRQ7

--- +5 VDC

--- -MASTER

--- GND

--- GND

1

2

21

AR-B1551 User’s Guide

3.2.15 IR. Header (IR)

The Infra-red Header pins assignments are as follow:

1 5 1 VCC

IR

3.2.16 Ext. Battery (JP5)

JP5

3.2.17 Battery Jumper (JP1)

JP1

1-2 2-3

External Battery On-Board Battery

2 NOT USED

3 IRRX

4 GND

5 IRTX

JP1: Battery Setting

1

1

1 EXBAT (3.6V)

2 GND

1 EXBAT

2 VCC

3 INTVBAT

3.2.18 COM1, COM2 (COM1, COM2 )

COM1 (COM1)

2

3

1

6

7
8

Table 0-3 RS-232 Connector Pin Assignment

4

5

Figure 0-6 COM1 & COM2: RS-232 Connector

CN5 CN6 Signal CN5 DB6 Signal

1 1 /DCD 6 6 /CTS

2 2 /DSR 7 7 /DTR

3 3 RXD 8 8 /RI

4 4 /RTS 9 9 GND

5 5 TXD 10 -- GND

9

COM2 (COM2)

7

9

10

8

1

3

5

6

2

4

22

AR-B1551 User’s Guide

A

A

(1) RS-232/RS-485 Select for COM2 (P1 & P3)

The P1&P3 jumper is used to choose between the use of the on-board RS-232 or RS-485 for the COM2.

P1 1

2

P3

3

B

C

RS-232

Factory Preset

Figure 3-10 P1 & P3: RS-232/RS-485 Select for COM2

(2) RS-485 Terminator Select (JP6)

When there is only one line the setting should be left off, but if you are using multiple blocks on a single line
this should be set to “ON” in order to properly terminate the connection for better transmission of data

1
2

OFF

Figure 0-7 JP6: RS-485 Terminator Select

Factory Preset

1

2

3

B

C

1

RS-485

2

ON

3.2.19 Touch Screen Connector (T.S.1 & T.S.2)

1 RXDF
2 TXDF
3 CGND

Figure 0-8 T.S.1&T.S.2: Touch Screen Connector

3.2.20 D.O.C. Memory Address Select (JP4)

This section provides the information about how to use the D.O.C. (DiskOnChip). There divided two parts:
hardware setting and software configuration.

Step 1:

Step 2:

Step 3:

Use JP4 to select the correct D.O.C. memory address.

Insert programmed DiskOnChip into sockets U22 setting as DOC.

Line up and insert the AR-B1551 card into slot of your computer.

1

2

OFF

Factory Preset

Figure 0-9 JP4: D.O.C. Memory Address Select

JP4 Address Note

OFF C8000 Factory Preset

ON D0000

Table 0-4 D.O.C. Memory Address

1

2

ON

23

AR-B1551 User’s Guide

3.2.21 26-Pin Audio Connector (AUDIO1)

25

26

Audio Connector

CN9 Signal CN9 Signal

1 CDINL 2 LININL
3 CDINR 4 LININR
5 VCC 6 NC
7 LINOUTL 8 MICIN

9 LINOUTR 10 PCBEEP
11 GNDAUD 12 GND
13 NC 14 NC
15 GNDAUD 16 GND
17 NC 18 NC
19 NC 20 NC
21 NC 22 NC
23 NC 24 NC
25 GNDAUD 26 GND

Table 0-5 Audio Connector Pin Assignment

1

2

3.2.22 LVDS Connector (LVDS1)

13 1

26 14

LVDS1 Signal LVDS1 Signal

1 TXOUT0- 14 GND

2 TXOUT0+ 15 GND

3 TXOUT1- 16 VTX5

4 TXOUT1+ 17 VTX5

5 TXOUT2- 18 NC

6 TXOUT2+ 19 GND

7 TXCLK- 20 GND

8 TXCLK+ 21 VTX12

9 TXOUT3- 22 VTX12
10 TXOUT3+ 23 GND
11 VTKBP 24 NC
12 VTX5 25 NC
13 VTX5 26 NC

3.2.23 LVDS Supported Voltage Select (JP3)

24

4

2

6

1

3

5

5V

Factory Preset

2

1

3.3V

4

6

3

5

AR-B1551 User’s Guide

3.3 WATCHDOG TIMER

This section describes how to use the Watchdog Timer disabled, enabled, and trigger. The AR-B1570 is equipped
with a programmable time-out period watchdog timer that occupies I/O post 214H. User can use the program to
enable the watchdog timer. Once you enable the watchdog timer, the program should trigger it every time before it
times out. And because of the system hang up, your program fails to trigger and disable the timer before it times
out. It will generate a reset signal to reset the system. The time-out period can be programmed to be 0 to 63
seconds.

Enable(D7)

Time Base

Time Factor

(D0-D5)

Write and

Trigger

Watchdog

Register

Counter and

Compartor

RESET

Watchdog Block Diagram

3.3.1 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, it will be set to zero
and start to count again. If your program fails to trigger the watchdog timer before time 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

Time period

25

AR-B1551 User’s Guide

Users could test watchdog function under ‘Debug’ program as follow:

C:>debug
 O 214 C8H

Generally, watchdog function would

reset system after 8 seconds
 O 214 0H
Disable watchdog function

C:>debug
 O 214 88H

Generally, watchdog function would

generate IRQ 9 after 8 seconds
 O 214 0H
Disable watchdog function

3.3.2 Watchdog Timer Trigger

After you enable the watchdog timer, your program must write the same factor as enabling to the watchdog register

at least once every time-out period to its previous setting. 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 before the new time-out period
in next trigger.

26

AR-B1551 User’s Guide

4. INSTALLATION

This chapter describes the installation procedure. The following topics are covered:

 Overview
 Utility Diskettes

4.1 OVERVIEW

This chapter provides information for you to set up a working system based on the AR-B1551 CPU board. Please
carefully read the details of the CPU board’s hardware descriptions before installation. Pay special attention to the
jumper settings, switch settings and cable connections.

Follow steps listed below for proper installation:

Step 1:

Step 2:

Step 3:

Step 4:

Step 5:

Step 6:

Step 7:

Step 8:

Step 9:

Step 10:

Read the CPU board’s hardware description in this manual.

Set jumpers.

Make sure that the power supply connected to your AR-B1551 CPU board is turned off.

Connect all necessary cables. Make sure that the HDC; serial and parallel cables are connected to
pin 1 of the related connector (not upside down).

Connect the hard disk flat cables from the CPU board to the drives. Connect a power source to
drive.

Plug the keyboard into the keyboard connector.

Turn on the power.

Configure your system with the BIOS Setup program (section 5) then re-boot your system.

If the CPU board does not work, turn off the power and read the hardware description carefully
again.

If the CPU board still does not perform properly, return the board to your dealer for immediate
service.

4.2 UTILITY DISKETTE

The AR-B1551 provides CD.

4.2.1 Driver Installation

The AR-B1551 provides LAN function drivers for the WIN95, WIN98, WIN2000, WINCE, LINUX, and NT. The
driver can auto-setup in the specified mode. The user must first decompress the compressed file.

The 1

The 2

st

step: Decompress the zip files included in the CD to your hard disk.

nd

step: Execute the corresponding files to setup the system.

27

AR-B1551 User’s Guide

The files list and descriptions are as follow:

README.TXT 391 09-22-00 11:17 README.TXT

Files

Descriptions

Files

Descriptions

Files 8139SW.EXE

Description

GEODEW~1 <DIR> 09-22-00 10:53 Geode win9x
WINCED~1 <DIR> 09-22-00 10:53 WinCE driver

1. GEODE win9x
Includes auto-execution program that will setup/install Geode Media drivers in Windows 9X
environment.

2. WinCE driver
Includes the GxM drivers needed in Win CE environment.

NT4~1 0DR <DIR> 09-22-00 10:53 NT4.0 driver
LINUXD~1 <DIR> 09-22-00 10:53 Linux driver
WIN200~1 <DIR> 09-22-00 10:53 Win2000 driver
README.TXT 1,611 04-23-99 11:48 README.TXT

1. NT4.0 driver
Includes the GxM drivers needed in NT4.0 environment.

2. Linux driver
Includes the GxM drivers needed in Linux environment.

3. Win2000 driver
Includes the GxM drivers needed in Win2000 environment.

An auto extract file that includes:

1. Device drivers of RTL8139A for various operating systems

2. LAN Configuration EEPROM programmer

3. Diagnostic and modification program for RTL8139

Disk 1

Disk 2

Disk 3

28

AR-B1551 User’s Guide

5. BIOS CONSOLE

This chapter describes the AR-B1551 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
 BIOS Features Setup
 Chipset Features Set
 PNP/PCI Configuration
 Load Default Setting
 Integrated Peripherals
 Password Setting
 IDE HDD Auto Detection
 BIOS Exit

5.1 BIOS SETUP OVERVIEW

Once you enter Award BIOS CMOS Setup Utility by holding the “Delete” button during boot-up, the Main Menu
will appear on the screen. The Main Menu allows you to select from various setup functions and two exit choices.
Use arrow keys to select among the items and press <Enter> to accept or enter the sub-menu.

ROM PCI/ISA BIOS (2A434AVF)

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

STANDARD CMOS SETUP

BIOS FEATURES SETUP

CHIPSET FEATURES SETUP

PNP/PCI CONFIGURATION

LOAD BIOS DEFAULTS

LOAD SETUP DEFAULTS

INTEGRATED PERIPHERALS

SUPERVISOR PASSWORD

USER PASSWORD

IDE HDD AUTO DETECTION

SAVE & EXIT SETUP

EXIT WITHOUT SAVING

Esc: Quit

F10: Save & Exit Setup

Time, Date, Hard Disk Type…

↑↓→←: Select Item

(Shift) F2: Change Color

BIOS Setup Main Menu

CAUTION: 1. AR-B1551 BIOS the factory-default setting is used to the <LOAD BIOS DEFAULTS> 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 <LOAD SETUP DEFAULTS> to boot the
operation system, this option will reduce the performance of the system. Acrosser recommends
choosing the <LOAD BIOS DEFAULTS> 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.

29

AR-B1551 User’s Guide

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.

ROM PCI/ISA BIOS (2A434AVF)

STANDARD CMOS SETUP

AWARD SOFTWARE, INC.

Date (mm:dd:yyyy): Tue, Mar 16, 2000
Time (hh:mm:ss): 16:39:30

<type>
Drive C : 0 ( 0Mb)
Drive D: 0 ( 0Mb)

Drive A: None
Drive B: None

Video: EGA/VGA

Halt On: All, But Keyboard

Esc: Quit

F1: Help

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>, <Sec Master>
and <Sec 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.
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 by choosing the HDD type, which should be
noted directly on the HDD.

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.

Video

This option selects the type of adapter used for the primary system monitor that must match your video display
card and monitor. Although secondary monitors are supported, you do not have to select the type in Setup.

You have two ways to boot up the system:

1. When VGA as primary and monochrome as secondary, the selection of the video type is “ VGA Mode”.

2 When monochrome as primary and VGA as secondary, the selection of the video type is “Monochrome Mode”.

CYLS. HEADS PRECOMP LANDZONE SECTORS MODE

0 0 0 0 0 AUTO

0 0 0 0 0 AUTO

Base Memory: 640K
Extended Memory: 29184K
Other Memory: 384K

Total Memory: 30208K

↑↓→←: Select Item

(Shift) F2: Change Color

PU/PD/+/-: Modify

Standard CMOS Setup

30

AR-B1551 User’s Guide

r

.

EGA/VGA Enhanced Graphics Adapter/Video Graphics Array. For EGA, VGA, SEGA, or PGA monito

adapters
CGA 40 Color Graphics Adapter, power up in 40 column mode
CGA 80 Color Graphics Adapter, power up in 80 column mode

MONO Monochrome adapter, includes high resolution monochrome adapters

Halt On

This option determines whether the computer will stop if an error is detected during power up.

No errors The system boot will not be stopped for any error that may be detected.

All errors Whenever the BIOS detects a non-fatal error the system will be stopped and you will be prompted.

All, But Keyboard The system boot will not stop for a keyboard error, it will stop for all other errors.

All, But Diskette The system boot will not stop for a disk error, it will stop for all other errors.

All, But Disk/Key The system boot will not stop for a keyboard or disk error, it will stop for all other errors.

5.3 BIOS FEATURES SETUP

The <BIOS FEATURES 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 for optimal performance.

It is suggested that you leave the settings on the factory default unless you are well versed in BIOS features.

ROM PCI/ISA BIOS (2A434AVF)

BIOS FEATURES SETUP

AWARD SOFTWARE, INC.

CPU Internal Cache

Quick Power On Self Test
Boot Sequence

Boot Up NumLock Status
Boot Up System Speed
Gate A20 Option
Memory Parity Check
Typematic Rate Setting
Typematic Rate (Chars/Sec)
Typematic Delay (Msec)
Security Option
PCI/VGA Palette Snoop

: Enabled

: Enabled
: C, CDROM,A

: On
: High
: Fast
: Disabled
: Enabled
: 30
: 250
: Setup
: Disabled

BIOS Features Setup

CPU Internal Cache/External Cache

The two functions speed up memory access. However, it depends on CPU/chipset design. If your CPU is without
Internal cache then this item <CPU Internal Cache> will not be show. The AR-B1551’s GX1 Cyrix CPU has an
internal cache and will automatically be set to <enabled>.

Video BIOS Shadow

Cyrix 6x86/MII CPUID

Esc: Quit
F1: Help
F5: Old Values
F6: Load BIOS Defaults
F7: Load Setup Defaults

↑↓→←: Select Item
PU/PD/+/-: Modify
(Shift) F2: Change Color

: Enabled

: Enabled

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AR-B1551 User’s Guide

r

Quick Power On Self Test

This option speeds up Power On Self Test (POST) after you power on the computer. If it is set to Enable, BIOS
will shorten or skip some items’ checks during POST.

Boot Sequence

The option determines which drive computer searches first for the disk operating system.

Boot Up NumLock Status

This item is used to activate the NumLock function upon system boot. If the setting is on, after a boot, the
NumLock light is lit, and the user can use the number keys.

Boot Up System Speed

This item is used to choose the boot-up speed of system. The choices provided are <LOW> and <HIGH>.

Gate A20 Option

This item is chosen as <Normal>, the A20 signal is controlled by keyboard controller or chipset hardware. The
selection is “Fast” means the A20 signal is controlled by Port 92 or a chipset specific method.

Memory Parity Check

An approach that generates and checks parity on each memory transfer and provides an interrupt if an error is

found. This item is to <Disabled> or <Enabled>

this function.

Typematic Rate Setting

To enable typematic rate and typematic delay programming. If you disable the typematic rate and typematic delay
programming, the system BIOS will use the default value of the keyboard controls these 2 items and the default.

Typematic Rate (Chars/Sec)

Typematic Rate sets the rate at which characters on the screen repeat when a key is pressed and held down. The
settings are 6, 8, 10, 12, 15, 20, 24, or 30 characters per second.

Typematic Delay (Msec)

The number selected indicates the time period between two identical characters appearing on screen.

Security Option

The option allows the user to limit access to the System and Setup, or just to Setup.

System The system will not boot and accesses to Setup will de denied if the correct password is not

entered at the prompt.

Setup The system will boot, but access to Setup will be denied if the correct password is not entered at

the prompt.

Note:

To disable security, select PASSWORD SETTING at Main Menu and then you will be asked to ente
password. Do not type anything and just press <Enter>, it will disable security. Once the security
is disabled, the system will boot and you can enter Setup freely.

PCI/VGA Palette Snoop

This option must be set to Enabled if any ISA adapter card installed in the computer requires VGA palette snooping.

Video BIOS Shadow

ROM Shadow copies Video BIOS code from slower ROM to faster RAM. Video BIOS can then execute from RAM.
This makes your system faster.

Cyrix 6x86/MII CPUID

The option is to determine whether or not to use the function of controlling or accessing the Cyrix 6x86/MII CPUID.

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AR-B1551 User’s Guide

5.4 CHIPSET FEATURES SETUP

This option controls the configuration of the board’s chipset. Control keys for this screen are the same as for the
previous screen. This selection is automatic.

ROM PCI/ISA BIOS (2A434AVF)

CHIPSET FEATURES SETUP

AWARD SOFTWARE, INC.

SDRAM CAS latency Time
SDRAM Clock Ratio Div By

16-bit I/O Recovery (CLK)
8-bit I/O Recovery (CLK)

: 3 T
: 4

: 5
: 5

Chipset Features Setup

SDRAM CAS latency Time

This item is to setup the SDRAM CAS# signal latency time, the smaller value you set it, the higher efficiency you
will get.

SDRAM Clock Ratio Div By

This item is to determine the SDRAM Clock Ratio.

16-Bit I/O Cycle Recovery Time
8-Bit I/O Cycle Recovery Time

These options specify the length of the delay (in BUSCLK) inserted between consecutive 8-bit/16-bit I/O operations.

Esc: Quit
F1: Help
F5: Old Values
F6: Load BIOS Defaults
F7: Load Setup Defaults

↑↓→←: Select Item
PU/PD/+/-: Modify
(Shift) F2: Color

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AR-B1551 User’s Guide

5.5 PNP/PCI CONFIGURATION

ROM PCI/ISA BIOS (2A434AVF)

PNP/PCI CONFIGURATION

AWARD SOFTWARE, INC.

PNP OS Installed
Resources Controlled By
Reset Configuration Rate

: NO
: Auto
: Disabled

PNP/PCI CONFIGURATION

PNP OS Installed

This item is to choose whether or not installing the PNP(Plug & Play) operation system.

Resources Controlled By

The available choices are <Auto>&<Manual>. To choose <Auto>the resources will be under the control of

system automatically. If <Manual> chosen , the following items will be listed.

<IRQ (3,4,5,7,9,10,11,12,14,15)> Setting these items one by one will clear up the conflict between NON-PNP

ISA extension cards and PNP system.

<DMA(0,1,3,5,6,7)> These items are used for the PNP ISA(PCI) cards or NON-PNP old ISA cards which use

DMA channel to enable them work normally.

Reset Configuration Data

This item is used to <enable> the function of Reset Configuration Data or not.

PCI IRQ Actived By

This item is to determine the active mode.

PCI IRQ Actived By

Esc: Quit
F1: Help
F5: Old Values
F6: Load BIOS Defaults
F7: Load Setup Defaults

: Level

↑↓→←: Select Item
PU/PD/+/-: Modify
(Shift) F2: Color

5.6 LOAD DEFAULT SETTING

This section permits the user to select a group of settings for all BIOS Setup options. Not only can you use these
items to quickly set system configuration parameters, you can choose a group of settings that have a better chance
of working when the system is having configuration related problems.

5.6.1 Load BIOS Defaults

User can load the optimal default settings for the BIOS. The <LOAD BIOS DEFAULTS> uses best-case values
that should optimize system performance. If CMOS RAM is corrupted, the optimal settings are loaded
automatically.

Load high performance settings (Y/N)?

5.6.2 Load Setup Defaults

User can load the <LOAD SETUP DEFAULTS> Setup option settings by selecting the Fail-Safe item from the
Default section of the BIOS Setup main menu.
The Fail-Safe settings provide far from optimal system performance, but are the most stable settings. Use this
option as a diagnostic aid if the system is behaving erratically.

Load failsafe settings (Y/N)?

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AR-B1551 User’s Guide

5.7 INTEGRATED PERIPHERALS

This section is designed to configure the peripheral features.

ROM PCI/ISA BIOS (2A434AVF)

INTEGRATED PERIPHERALS

AWARD SOFTWARE, INC.

IDE HDD Block Mode
Primary IDE Channel

Master Drive PIO Mode
Slave Drive PIO Mode

IDE Primary Master UDMA
IDE Primary Slave UDMA

KBC input clock

Onboard Serial Port 1
Onboard Serial Port 2
Onboard IR Controller

Onboard Parallel Port
Parallel Port Mode

: Enabled
: Enabled
: Auto
: Auto

: Disabled
: Disabled

: 8 MHz

: 3F8/IRQ4
: 2F8/IRQ3
: Disabled

378/IRQ7
SPP

Integrated Peripherals

IDE HDD Block Mode

This option allows your hard disk controller to use the fast block mode to transfer data to and from your hard disk
drive (HDD).

Enabled IDE controller uses block mode.

Disabled IDE controller uses standard mode.

IDE PIO

IDE hard drive controllers can support up to two separate hard drives. These drives have a master/slave
relationship, which is determined by the cabling configuration used to attach them to the controller. Your system
supports one IDE controller – a primary and a secondary – so you have the ability to install up to four separate
hard disks.
PIO means Programmed Input/Output. Rather than have the BIOS issue a series of commands to affect a transfer
to or from the disk drive, PIO allows the BIOS to tell the controller what it wants and then let the controller and the
CPU perform the complete task by themselves. This is simpler and more efficient (and faster). Your system
supports five modes, numbered from 0 to 4, which primarily differ in timing. When Auto is selected, the BIOS will
select the best available mode.

KBC input clock

This item it to chose the input clock of Keyboard Controller

OnBoard Serial Port 1 & 2

These options are used to select the port address of the on-board serial port A. The options are 3F8H, 2F8H,
3E8H, 2E8H, Auto and Disable. Port 1 is COM A, Port 2 is Com D and so on. Port four can be set to be IrDA
(Choose Auto) if the IrDA device has been connected.

OnBoard Parallel Port

This option is used to select the port address of the on-board parallel port. The options are 378H, 278H, 3BCH,
and Disabled.

Parallel Port Mode

This option specifies the parallel port Mode. The settings are Printer or Extended (Bi-direction).

Multiple Monitor Support

Video Memory Size

Esc: Quit
F1: Help
F5: Old Values
F6: Load BIOS Defaults
F7: Load Setup Defaults

:
: No Onboard

: 2.5M

↑↓→←: Select Item
PU/PD/+/-: Modify
(Shift) F2: Color

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AR-B1551 User’s Guide

Multiple Monitor Support

This is to determine the highest priority that the monitor supports. <PCI First> is the default setting. The other two
choices are <No Onboard> and <M/B First>.

5.8 PASSWORD SETTING

This BIOS Setup has an optional password feature. The system can be configured so that all users must enter a
password every time the system boots or when BIOS Setup is executed.

5.8.1 Setting Password

Select the appropriate password icon from the Security section of the BIOS Setup main menu. Enter the password
and press [Enter]. The screen does not display the characters entered. After the new password is entered, retype
the new password as prompted and press [Enter].

If the password confirmation is incorrect, an error message appears. If the new password is entered without error,
press [Esc] to return to the BIOS Main Menu. The password is stored in CMOS RAM after BIOS is completed.
The next time the system boots, the prompt for the password function is present and is enabled.

Enter new supervisor password:

5.8.2 Password Checking

The password check option is enabled in Advanced Setup by choosing either Always (the password prompt
appears every time the system is powered on) or Setup (the password prompt appears only when BIOS is run).

The password is stored in CMOS RAM. User can enter a password by typing with the keyboard. Enter a 1-6
character password. The password does not appear on the screen when typed. Make sure you write it down.

5.9 IDE HDD AUTO DETECTION

This option detects the parameters of an IDE hard disk drive, and automatically enters them into the Standard
CMOS Setup screen.

5.10 BIOS EXIT

This section is used to exit the BIOS main menu in two types of situation. After making your changes, you can
either save them or exit the BIOS menu and without saving the new values.

5.10.1 Save & Exit Setup

This item set in the <Standard CMOS Setup>, <BIOS Features Setup>, <Chipset Features Setup>, <Power
Management Setup>, <Integrated Peripherals> and the new password (if it has been changed) will be stored in the
CMOS. The CMOS checksum is calculated and written into the CMOS.

As you select this function, the following message will appear at the center of the screen to assist you in saving
data to CMOS and Exit the Setup.

Save current settings and exit (Y/N) ?

5.10.2 Exit Without Saving

When you select this option, the following message will appear at the center of the screen to help to abandon all
Data and Exit Setup.

Quit without saving (Y/N) ?

Windows Installation Notice:

1. The proper way to setup the Windows system is to copy all the drivers needed to your hard disk or CD-ROM and to
execute them from the related devices.

2. Please refer to BIOS setup section in this manual for booting from CD-ROM

3. If you find any difficulty in the operating systems installation, please contact our technical support for further

assistance.

Note:

If the content in Setting is inconsistent with CD-ROM. Please refer to the Setting as priority.

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