Acrosser AR-B1550 User Manual

AR-B1550

INDUSTRIAL GRADE

CPU BOARD

User’ s Guide

Edition: 1.32

Book Number: AR-B1550-05.06.30

AR-B1550 User’s Guide

Table of Contents

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

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

0.2 WELCOME TO THE AR-B1550 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 ........................................................................................................................................................................... 5

1.3 FEATURES................................................................................................................................................................................. 5

2. SYSTEM CONTROLLER..............................................................................................................................................6

2.1 MICROPROCESSOR ................................................................................................................................................................. 6

2.2 DMA CONTROLLER................................................................................................................................................................... 6

2.3 KEYBOARD CONTROLLER....................................................................................................................................................... 7

2.4 INTERRUPT CONTROLLER ...................................................................................................................................................... 7

2.4.1 I/O Port Address Map........................................................................................................................................................... 7

2.4.2 Real-Time Clock and Non-Volatile RAM............................................................................................................................... 8

2.4.3 Timer.................................................................................................................................................................................... 9

2.5 SERIAL PORT............................................................................................................................................................................ 9

2.6 PARALLEL PORT......................................................................................................................................................................12

3. SETTING UP THE SYSTEM.......................................................................................................................................14

3.1 OVERVIEW................................................................................................................................................................................14

3.2 SYSTEM SETTING....................................................................................................................................................................14

3.2.1 Hard Disk (IDE) Connector (CN4)........................................................................................................................................15

3.2.2 Network Setting (CN1, CN2, CN3).......................................................................................................................................15

3.2.3 Reset Header (J1)...............................................................................................................................................................16

3.2.4 Power Connector (J3)..........................................................................................................................................................16

3.2.5 CPU Select..........................................................................................................................................................................16

3.2.6 CRT Connector (CN7).........................................................................................................................................................17

3.2.7 LED Header (J4) .................................................................................................................................................................17

3.2.8 USB Connector(CN6)-Reserved..........................................................................................................................................17

3.2.9 Ethernet LAN Jumper (JP3).................................................................................................................................................17

3.2.10 PC104 Connector (CN5)....................................................................................................................................................17

3.2.11 Test Jumper (JP4).............................................................................................................................................................18

3.2.12 PS/2 Connector (CN5).......................................................................................................................................................19

3.2.13 Parallel Port Connector (CN2)...........................................................................................................................................19

3.2.14 IR. Header (J2)..................................................................................................................................................................20

3.2.15 Ext.Batt (CN6)...................................................................................................................................................................20

3.2.16 Battery Jumper (JP1).........................................................................................................................................................20

3.2.17 Watchdog Trigger (J1)-Reversed.......................................................................................................................................20

3.2.18 COM1, COM2 (CN3, CN4)................................................................................................................................................20

3.2.19 PC104 CONNECTOR (CN1).............................................................................................................................................21

4. INSTALLATION..........................................................................................................................................................22

4.1 OVERVIEW................................................................................................................................................................................22

4.2 UTILITY DISKETTE ...................................................................................................................................................................22

4.2.1 Driver Installation.................................................................................................................................................................22

5. BIOS CONSOLE.........................................................................................................................................................24

5.1 BIOS SETUP OVERVIEW..........................................................................................................................................................24

5.2 STANDARD CMOS SETUP.......................................................................................................................................................24

5.3 BIOS FEATURES SETUP..........................................................................................................................................................26

5.4 CHIPSET FEATURES SETUP...................................................................................................................................................28

5.5 POWER MANAGEMENT...........................................................................................................................................................29

5.6 PNP/PCI CONFIGURATION......................................................................................................................................................30

5.6.1 LOAD DEFAULT SETTING.....................................................................................................................................................30

5.6.2 Load BIOS Defaults.............................................................................................................................................................30

5.6.3 Load Setup Defaults............................................................................................................................................................30

5.7 INTEGRATED PERIPHERALS ..................................................................................................................................................31

Multiple Monitor Support ..................................................................................................................................................................32

Video Memory Size..........................................................................................................................................................................32

5.8 PASSWORD SETTING..............................................................................................................................................................32

5.8.1 Setting Password ................................................................................................................................................................32

5.8.2 Password Checking.............................................................................................................................................................32

5.9 IDE HDD AUTO DETECTION....................................................................................................................................................32

5.10 BIOS EXIT ...............................................................................................................................................................................32

1

AR-B1550 User’s Guide

5.10.1 Save & Exit Setup .............................................................................................................................................................32

5.10.2 Exit Without Saving...........................................................................................................................................................32

APPENDIX A. ADDRESS MAPPING..........................................................................................................................33

IOAddressMap…….………………………………………………………………………………………………………....33

MeMoryMap……………………………………………………………………………………………………………… ...… 34

Appendix b. INTERRUPT REQUEST (IRQ)……………………..……………………………………………………………..35

2

AR-B1550 User’s Guide

0.PREFACE

0.1 COPYRIGHT NOTICE AND DISCLAIMER

September 2000

Acrosser Technology makes no representations or warranties with respect to the contents hereof and specifically
disclaims any implied warranties of merchantability or fitness for any particular purpose. Furthermore, Acrosser
Technology reserves the right to revise this publication and to make changes from time to time in the contents
hereof without obligation of Acrosser Technology to notify any person of such revisions or changes. Changes will
be posted on the Internet (WWW.ACROSSER.COM) as soon as possible, but there is obligation on the part of
Acrosser to this fact.
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 sublicensor.
(C) Copyright Acrosser Technology Co., Ltd., 2000. All rights Reserved.
No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated
into any language or computer language, in any form or any means, electronic, mechanical, magnetic, optical,
chemical, manual or otherwise, without the prior written consent of Acrosser Technology.
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-B1550 CPU BOARD

This guide introduces the Acrosser AR-B1550 CPU board.
The following information describes this card’s functions, features, and how to start, set up and operate your AR­B1550. General system information can also be found here.

0.3 BEFORE YOU USE THIS GUIDE

If you have not already installed this AR-B1550, refer to the Chapter 3, “Setting Up The System” in this guide.
Check the packing list, make sure the accessories are complete.
The AR-B1550 diskette provides the newest information about the card. Please refer to the files of the
enclosed utility diskette. It contains the modification, hardware & software information, and it has updates to
product functions that may not be mentioned here.

0.4 RETURNING YOUR BOARD FOR SERVICE

If your board requires servicing, contact the dealer 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 of 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. And a brief description of the symptoms.

0.5 TECHNICAL SUPPORT AND USER COMMENTS

User’s comments are always welcome as they assist us in improving the usefulness of our products and the
understanding of our publications. They form a very important part of the input used for product enhancement
and revision.
We may use and distribute any of the information you supply in any way we believe appropriate without incurring
any obligation. You may, of course, continue to use the information you supply.
If you have suggestions for improving particular sections or if you find any errors, please indicate the manual title
and book number.
Please send your comments to Acrosser Technology Co., Ltd. or your local sales representative.
Internet electronic mail to: [e-mail]
Check our FAQ sheet for quick fixes to known technical problems.

3

AR-B1550 User’s Guide

0.6 ORGANIZATION

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

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

4

AR-B1550 User’s Guide

1. OVERVIEW

This is a AR-B1550 Pentium Grade Firewall CPU Board with Ethernet, DOM.
This chapter provides an overview of your system features and capabilities. The following topics are covered:

l Specification
l Packing List
l Features

1.1 SPECIFICATION

l CPU : NS GEODE GX1/GXLV
l Chipset:Cyrix CS5530
l RAM Memory:Onboard 32MB/64MB/128MB SDRAM
l Flash Disk:Supports one socket for DiskOnModule
l Ethernet:3 x 10M/100M-Base2 with RJ-45 connector (PCI BUS)
l BIOS:AMI or AWARD flash BIOS
l RTC:BQ3287MT Chips (RESERVED)
l Speaker:Supports external speaker
l LED Indicator:Power, HD and LAN LEDs
l Jumper:3 x 2 Jumper select base clock and CPU clock multiplier
l Power Connector:One 8-pin 2.5mm JST
l Power Req.:5V, 2.5A
l PC Board:6 layers,EMI considered
l Dimensions:145 mm x 102 mm

1.2 PACKING LIST

Some accessories are included with the system. Before you begin installing your AR-B1550 board, take a moment
to make sure that the following items have been included inside the AR-B1550 package.

l The quick setup manual
l 1 AR-B1550 all-in-one single CPU board
l AR-B9459 I/O Board (extension card)
l Software utility diskettes.

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.

l CPU NS GEODE GX1/GXLV
l Cyrix CS5530 Chipset
l Onboard 32MB/64MB SDRAM
l Supports DOM Flash Disk
l 3 x 10/100M-Base2 Ethernet
l AMI or AWARD flash BIOS
l Power Req.: 5V, 2.5A
l Dimensions: 145 mm x 102 mm

5

AR-B1550 User’s Guide

2. SYSTEM CONTROLLER

This chapter describes the main structure of the AR-B1550 CPU board. The following topics are covered:

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

2.1 MICROPROCESSOR

The AR-B1550 uses the NS GEODE GX1/GXLV CPU (or other GXM CPUs), 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-B1550 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

6

AR-B1550 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-B1550 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

CTRL2

IRQ0
IRQ1

IRQ2

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

2.4.1 I/O Port Address Map

Hex Range

000-01F DMA controller 1
020-021 Interrupt controller 1
022-023 Cyrix CS5530
040-04F Timer 1

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)
IRQ11:LAN adapters(based on PCI INT routing)
IRQ12:Reserved for PS/2 mouse
IRQ13:Math.Co-processor
IRQ14:Hard disk adapter
IRQ15:LAN adapters(based on PCI INT routing

Interrupt Controller

Device

7

AR-B1550 User’s Guide

Hex Range

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
218-21A EMS register 1

278-27F Parallel printer port (depends on setup assignment)

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)

I/O Port Address Map

Device

2.4.2 Real-Time Clock and Non-Volatile RAM

The AR-B1550 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:

8

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

AR-B1550 User’s Guide

2.4.3 Timer

The AR-B1550 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.

2.5 SERIAL PORT

The ACEs (Asynchronous Communication Elements ACE1 to ACE4) are used to convert parallel data to a serial
format on the transmit side and 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.

Provisions are also included to use this 16x clock to drive the receiver logic. Also included in the ACE a completed
MODEM control capability, and a processor interrupt system that may be software tailored to the computing time

9

AR-B1550 User’s Guide

WLS1

WLS0

Word Length

required to handle the communications link.

The following table is a summary of each ACE accessible register

DLAB Port Address

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

(5) Line Control Register (LCR)

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

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)

Register

10

(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)

AR-B1550 User’s Guide

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

11

AR-B1550 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:

1234567 0

X X X

-ERROR
SLCT
PE

-ACK

-BUSY

Printer Status Buffer

NOTE: X presents not used.

12

AR-B1550 User’s Guide

line during printing, or when the

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

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

be active for approximately 5

X X 1 2 3 4 5 6 7 0

STROBE

AUTO FD XT

INIT SLDC IN

IRQ ENABLE

DIR(write only)

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

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

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

print
accept data.

Bit 6:

character and is ready to accept another. Normally, this signal will

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:

Bit’s Definition

NOTE: X presents not used.

Bit 5:

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

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

13

AR-B1550 User’s Guide

3. SETTING UP THE SYSTEM

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

l Overview
l System Setting

3.1 OVERVIEW

AR-B1550 Pentium Grade Firewall CPU Board with Ehternet , DOM. 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.

B

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.

14

AR-B1550 User’s Guide

1

2 44

43

3.2.1 Hard Disk (IDE) Connector (CN4)

A 44-pin header type connector (CN4) is provided to interface with up to two embedded hard disk drives (IDE AT
bus). This interface, through a 44-pin cable, allows the user to connect up to two drives in a “daisy chain” fashion.
To enable or disable the hard disk controller, please use the BIOS Setup program, which is explained further in
chapter 5. The following table illustrates the pin assignments of the hard disk drive’s 44-pin connector.

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 (IDE) Connector

3.2.2 Network Setting (CN1, CN2, CN3)

The CN1, CN2 & CN3 RJ-45 header 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

18

18

15

AR-B1550 User’s Guide

3.2.3 Reset Header (J1)

The J1 is used to connect to an external reset switch. Shorting these two pins will reset the system.

1 Reset+
2 Reset-

12

3.2.4 Power Connector (J3)

The J3 is an 8-pin power connector. It’s the standard connectors on all Acrosser boards.

J3

1 8

1 GND
2 VCC
3 VCC
4 GND

5 GND
6 12V
7 REVERSED
8 REVERSED

3.2.5 CPU Select

(1) CPU Clock Multiplier Select (JP1)

JP1

4 6

1-2 3-4 5-6 Multiplier

CLOSE CLOSE CLOSE 4X
CLOSE CLOSE OPEN 10X Factory Preset
CLOSE OPEN CLOSE 9X
CLOSE OPEN OPEN 5X

OPEN CLOSE CLOSE Reserved
OPEN CLOSE OPEN 6X
OPEN OPEN CLOSE 7X
OPEN OPEN OPEN Reserved

(2) CPU Base Clock Select (JP2)

JP2

1-2 3-4 PCI Clock Note

ON ON 25MHz

OFF ON 33.3MHz

ON OFF 30MHz Factory Preset

(3) CPU Logic Core Voltage Select (SW2)

1 325

4

3

JP2: CPU Base Clock

JP1: CPU Clock Multiplier

2

1

Note

16

1 2 3 4 5 6 Voltage

1 2

J2

4

6

OFF ON ON OFF ON OFF
OFF ON OFF ON ON OFF
OFF ON ON ON ON OFF
OFF ON OFF OFF OFF OFF

ON OFF ON OFF OFF OFF
ON OFF OFF ON OFF OFF

SW2: CPU Logic Core Voltage Select

(4) CPU Cooling Fan Power Header (J2) - reserved

3.2.6 CRT Connector (CN7)

CN7

2

1

10

9

1 +12V
2 GND

1. Red 6. AGND

2. AGND 7. V.S

3. Green 8. DDCD

4. GND 9. H.S

5. Blue

10.DDCK

AR-B1550 User’s Guide

1.6V

1.8V

2.0V

2.2V

2.5V

2.9V

3.2.7 LED Header (J4)

J4

1 325

3.2.8 USB Connector(CN6)-Reserved

CN6

2

1

10

9

3.2.9 Ethernet LAN Jumper (JP3)

JP3

56
34

12

1-2 Close (Ethernet-1ON) Open (Ethernet-1 OFF)
3-4 Close (Ethernet-2ON) Open (Ethernet-2 OFF)
5-6 Close (Ethernet-3ON) Open (Ethernet-3 OFF)

JP3: Ethernet LAN Jumper Setting
Factory Preset : 1-2 , 3-4 , 5-6 (ON)

1.BEEP+

2.BEEP-

3.HDLED+

1.USBVCC1

2.USBVCC2

3.USBD1F-

4.USBD2F-

4.HDLED-

5.POWLED+

6.POWLED-

5.USBD1F+

6.USBD2F+

7.8.GND

9.10.AGND

3.2.10 PC104 Connector (CN5)

2

1

64-Pin PC/104 Connector

64

63

17

AR-B1550 User’s Guide

-

IOCHCK

---

SD6

---

SD5

---

SD4

-

--

SD3

--

-

SD2

---

SD1

-

--

SD0

--

-

IOCHRDY

---

AEN

---

SA19

---

SA18

---

SA17

---

SA16

---

SA15

---

SA14

---

SA13

---

SA12

---

SA11

---

SA10

--- A1

A2 A3 A4 A5 A6 A7 A8 A9

A10

A11 A12

A13

A14 A15

A16

A17 A18

A19

A20

A21 A22

A23

A24 A25

A26

A27 A28

A29

A30 A31

A32

---

GND

---

RSTDRV

-

--

+5 VDC

---

IRQ9

---

+3 VDC

--

-

DREQ2

---

IRQ1

---

GND

---

/RTCCS

---

-IOW

---

--

DACK3

--

-

DREQ3

---

IRQ7

SA9

-

--

SA8

---

SA7

---

SA6

---

SA5

---

SA4

---

SA3

---

SA2

-

--

SA1

---

SA0

---

GND

---

B1 B2 B3 B4 B5 B6 B7 B8 B9

B10

B11 B12

B13

B14 B15

B16

B17 B18

B19

B20

B21 B22

B23

B24 B25

B26

B27 B28

B29

B30 B31

B32

---

IRQ6

---

IRQ5

---

IRQ4

-

--

IRQ3

--- -

DACK2

---

TC

---

BALE

---

+5 VDC

---

24M

---

GND

3.2.11 Test Jumper (JP4)

CLOSE OPEN

1-2 PC104 10th pin=VCC3V
3-4 PC104 14th pin=IRQ1 RESERVED
5-6 PC104 18th pin=IR12 RESERVED

JP4: Test Jumper Setting

Factory Preset : 1-2 (CLOSE)

1 2

JP4

---

/IRQ8

--

- IRQ12

--- RTCALE

--- -

IOR

-

-- -DACK1

-

-- -REFRESH

-

-- BUSCLK

56
34

12

RESERVED

18

AR-B1550 User’s Guide

1-MOUSE DATA

CN5

NOTE: ALL OF THE FOLLWING CONNECTORS AND JUMPERS ARE

INCLUDED IN THE AR-B9459 I/O BOARD

The AR-B9459 I/O Board is a 3.5 ” Function Extension board, It’s included in the packing list of AR-B1550, This
section provided hardware’s setting, the connector’s location, and the pin assignment of it.

External System Location

3.2.12 PS/2 Connector (CN5)

Connecting the provided adapter cable between the CN5 connector and the keyboard/Mouse. The pin
assignments of the CN5 connector are as follows:

2-KB DATA
3-GND

16

4-VCC

5-MOUSE CLOCK
6-KB CLOCK

3.2.13 Parallel Port Connector (CN2)

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

1

CN8

14

13

26

19

AR-B1550 User’s Guide

PIN Signal PIN Signal

1 -Strobe 14 -Auto Form Feed
2 Data 0 15 -Error
3 Data 1 16 -Initialize
4 Data 2 17 -Printer Select In
5 Data 3 18 Ground
6 Data 4 19 Ground
7 Data 5 20 Ground
8 Data 6 21 Ground

9 Data 7 22 Ground
10
11
12
13

-Acknowledge 23 Ground
Busy 24 Ground

Paper 25 Ground

Printer Select 26 Not Used

Parallel Port Pin Assignments

3.2.14 IR. Header (J2)

The Infra-red Header pins assignments are as follow:

J2

15 1-VCC

2-NOT USED
3-IRRX
4-GND
5-IRTX

3.2.15 Ext.Batt (CN6)

CN6

1-EXBAT
2-GND

1

3.2.16 Battery Jumper (JP1)

JP1

1
3

External Battery On-Board Battery

3.2.17 Watchdog Trigger (J1)-Reversed

1-2 2-3

JP1: Battery Setting

JI

1

1-WDTO
2-GND

3.2.18 COM1, COM2 (CN3, CN4)

COM

9

10

20

1- DCD 2- DSR

1

3- RX 4- RTS

2

5- TX 6- CTS
7- DTR 8- RI
9- GND

3.2.19 PC104 CONNECTOR (CN1)

SD6

---

SD5

---

SD4

-

--

SD3

--

-

SD2

---

SD1

-

--

SD0

--

-

IOCHRDY

---

AEN

---

SA15

---

SA14

---

SA13

---

SA12

---

SA11

---

SA10

--- A1 A2

A3 A4 A5 A6

A7 A8

A9

A10

A11 A12 A13 A14

A15

A16 A17

A18

A19 A20 A21

A22 A23

A24

A25

A26 A27 A28 A29

A30

A31 A32

---

GND

---

RSTDRV

-

--

+5 VDC

---

IRQ9

---

DREQ2

---

IRQ1

---

--

---

GND

---

-IOW

---

--

DACK3

--

-

DREQ3

-

---

IRQ7

SA9

-

--

SA8

---

SA7

---

SA6

---

SA5

---

SA4

---

SA3

---

SA2

-

--

SA1

---

SA0

---

GND

--- B1 B2

B3 B4 B5 B6

B7 B8

B9

B

10

B11 B12 B13 B14

B15

B16 B17

B18

B19 B20 B21

B22 B23

B24

B25

B26 B27 B28 B29

B30

B31 B32

---

IRQ6 ---

IRQ5

-

--

IRQ3

---

DACK2

---

TC

---

+5 VDC

---

24M

---

GND

2

AR-B1550 User’s Guide

64

1

64-Pin PC/104 Connector

63

1 2

/IRQ8

- IRQ12

--- -IOR

-- -DACK1

--- IRQ4

21

AR-B1550 User’s Guide

Connect all necessary cables. Make sure that the HDC; serial and parallel cables are connected to

a power source to

n off the power and read the hardware description carefully

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

4. INSTALLATION

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

l Overview
l Utility Diskettes

4.1 OVERVIEW

This chapter provides information for you to set up a working system based on the AR-B1550 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-B1550 CPU board is turned off.

pin 1 of the related connector (not upside down).

Connect the hard disk flat cables from the CPU board to the drives. Connect
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, tur
again.

service.

4.2 UTILITY DISKETTE

The AR-B1550 provides three utility diskettes.

4.2.1 Driver Installation

The AR-B1550 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 1st step: Decompress the zip files included in the diskettes to your hard disk.

The 2nd step: Execute the corresponding files to setup the system.

The files list and descriptions are as follow:

22

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

drivers in Windows 9X

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
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

AR-B1550 User’s Guide

Disk 1

Disk 2

Disk 3

23

AR-B1550 User’s Guide

5. BIOS CONSOLE

This chapter describes the AR-B1550 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:

l BIOS Setup Overview
l Standard CMOS Setup
l BIOS Features Setup
l Chipset Features Set
l PNP/PCI Configuration
l Load Default Setting
l Integrated Peripherals
l Password Setting
l IDE HDD Auto Detection
l 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-B1550 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.

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.

24

AR-B1550 User’s Guide

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> CYLS. HEADS PRECOMP LANDZONE SECTORS MODE
Drive C : 0 ( 0Mb) 0 0 0 0 0 AUTO
Drive D: 0 ( 0Mb) 0 0 0 0 0 AUTO

Drive A: None
Drive B: None

Video: EGA/VGA
Halt On: All, But Keyboard

Esc: Quit
F1: Help

????: Select Item
(Shift) F2: Change Color

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

Total Memory: 30208K

PU/PD/+/-: Modify

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>, <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”.

.

25

AR-B1550 User’s Guide

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

EGA/VGA

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
OS Select For DRAM>64MB

Report No FDD For Win95

: Enabled

: Enabled
: C, CDROM,A

: On
: High
: Fast
: Disabled
: Enabled
: 30
: 250
: Setup
: Disabled
: Non-OS2
: Yes

Video BIOS Shadow

Cyrix 6x86/MII CPUID

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

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-B 9625’s GXM Cyrix CPU has an
internal cache and will automatically be set to <enabled>.

: Enabled

: Enabled

????: Select Item
PU/PD/+/-: Modify
(Shift) F2: Change Color

26

AR-B1550 User’s Guide

The system will not boot and access to Setup will de denied if the correct password is not entered

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

To disable security, select PASSWORD SETTING at Main Menu and then you will be asked to enter

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 a 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 these 2 items and the default is controlled by the
keyboard.

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

at the prompt.

Setup

the prompt.

Note:

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.

27

AR-B1550 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

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

????: Select Item
PU/PD/+/-: Modify
(Shift) F2: Color

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.

28

AR-B1550 User’s Guide

5.5 POWER MANAGEMENT

This section is designed to configure peripheral features.

ROM PCI/ISA BIOS (2A434AVA)

POWER MANAGEMENT SETUP

AWARD SOFTWARE, INC.

Power Management

** PM Timers **
Doze Mode
Standby Mode
HDD Power Down
MODEM Use IRQ

Throttle Duty Cycle

: Disabled

: Disabled
: Disabled
: Disabled
: NA

: 33.3%

IRQ1 (KeyBoard)
IRQ3 (COM 2)
IRQ4 (COM 1)
IRQ5 (LPT 2)
IRQ6 (Floppy Disk)
IRQ7 (LPT 1)
IRQ9 (IRQ2 Redir)
IRQ10 (Reserved)
IRQ11 (Reserved)
IRQ12 (PS/2 Mouse)
IRQ13 (Coprocessor)
IRQ14 (Hard Disk)
IRQ15 (Reserved)

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

????: Select Item
PU/PD/+/-: Modify
(Shift) F2: Change Color

Figure 6-5 BIOS: Peripheral Setup

Power Management

The option determines how much power consumption is needed for the system after selecting the below items.

Doze Mode

Defines the continuous idle time before the system enters Doze Mode.

Standby Mode

Defines the continuous idle time before the system enters Standby Mode. If any item defined is enabled & active
Standby timer will be reloaded.

HDD Power Down

This option specifies the power management states that the hard disk drive enters after the specified period of display
inactivity has expired.

IRQ

These options enable event monitoring. When the computer is in a power saving mode, activity on the named interrupt
request line is monitored by BIOS. When any activity occurs, the computer enters Full On mode.

: NO
: OFF
: OFF
: OFF
: OFF
: OFF
: OFF
: OFF
: OFF
: OFF
: OFF
: OFF
: OFF

29

AR-B1550 User’s Guide

5.6 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

PCI IRQ Actived By

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

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.

: Level

????: Select Item
PU/PD/+/-: Modify
(Shift) F2: Color

5.6.1 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.

5.6.2 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)?

5.6.3 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)?

30

AR-B1550 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

Multiple Monitor Support
Video Memory Size
GXLV Status
CRT Resolution

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

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 effect 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

This 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).

: No Onboard
: 2.5M
: Enabled
: 800X600

????: Select Item
PU/PD/+/-: Modify
(Shift) F2: Color

31

AR-B1550 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>.

Video Memory Size

Video Memory Size 4MB For Windows2000.

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) ?

32

AR-B1550 User’s Guide

Windows Installation Notice:

1. While AR-B1550/9459 does not have floppy disk function, 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 futher assistance.

APPENDIX A. ADDRESS MAPPING

IO ADDRESS MAP

I/O MAP ASSIGNMENT
0x0022-0x003F PCI bus
0x0044-0x0047 PCI bus
0x004C-0x006F PCI bus
0x0072-0x007F PCI bus
0x0090-0x0091 PCI bus
0x0093-0x009F PCI bus
0x00A2-0x00BF PCI bus
0x00E0-0x00EF PCI bus
0x0100-0x0CF7 PCI bus
0x0D00-0xFFFF PCI bus
0xE000-0xE0FF Realtek RTL8139(A) PCI Fast

Ethernet Adapter
0x0A79-0x0A79 ISAPNP Read Data Port
0x0279-0x0279 ISAPNP Read Data Port
0x0274-0x0277 ISAPNP Read Data Port
0xF000-0xF00F Standard Dual Channel PCI

IDE Controller
0x01F0-0x01F7 Primary IDE Channel
0x03F6-0x03F6 Primary IDE Channel
0x0170-0x0177 Secondary IDE Channel
0x0376-0x0376 Secondary IDE Channel
0x03B0-0x03BB National Semiconductor

Corporation Win2K Graphics

Driver
0x03C0-0x03DF National Semiconductor

Corporation Win2K Graphics

Driver
0xE400-0xE4FF Realtek RTL8139(A) PCI Fast

Ethernet Adapter
0xE800-0xE8FF Realtek RTL8139(A) PCI Fast

Ethernet Adapter
0x0020-0x0021 Programmable interrupt

controller
0x00A0-0x00A1 Programmable interrupt

controller
0x0040-0x0043 System timer
0x0000-0x000F Direct memory access

controller
0x0081-0x0083 Direct memory access

controller
0x0087-0x0087 Direct memory access

controller

33

AR-B1550 User’s Guide

MEMORY MAP:

0x0089-0x008B Direct memory access

controller
0x008F-0x0091 Direct memory access

controller
0x00C0-0x00DF Direct memory access

controller
0x0060-0x0060 PC/AT Enhanced PS/2

Keyboard (101/102-Key)
0x0064-0x0064 PC/AT Enhanced PS/2

Keyboard (101/102-Key)
0x0378-0x037F Printer Port (LPT1)
0x03F8-0x03FF Communications Port (COM1)
0x02F8-0x02FF Communications Port (COM2)
0x03F2-0x03F5 Standard floppy disk controller
0x03F7-0x03F7 Standard floppy disk controller
0x0061-0x0061 System speaker
0x0070-0x0071 System CMOS/real time clock
0x00F0-0x00FF Numeric data processor

0xA0000-0xBFFFF PCI bus
0xA0000-0xBFFFF National Semiconductor

Corporation Win2K Graphics

Driver
0xC8000-0xDFFFF PCI bus
0x3C00000-0xFFFEFFFF PCI bus
0xD0000000-0xD00000FF Realtek RTL8139(A) PCI Fast

Ethernet Adapter
0x40012000-0x400120FF Other PCI Bridge Device
0x40800000-0x40FFFFFF National Semiconductor

Corporation Win2K Graphics

Driver
0xD0004000-0xD00040FF Realtek RTL8139(A) PCI Fast

Ethernet Adapter
0xD0005000-0xD00050FF Realtek RTL8139(A) PCI Fast

Ethernet Adapter
0x0000-0x9FFFF System board
0x40010000-0x40010FFF System board
0x40008000-0x4000FFFF System board
0x40018000-0x407FFFFF System board
0x41000000-0x41017FFF System board
0xFFFC0000-0xFFFFFFFF System board
0xFEE00000-0xFEE0FFFF System board
0x100000-0x3BFFFFF System board
0xE0000-0xEFFFF Motherboard resources
0xF0000-0xF3FFF Motherboard resources
0xF4000-0xF7FFF Motherboard resources
0xF8000-0xFBFFF Motherboard resources
0xFC000-0xFFFFF Motherboard resources

34

APPENDIX B. INTERRUPT REQUEST (IRQ)

SETTING HARDWARE USING THE SETTING

01 PC/AT Enhanced PS/2 Keyboard

(101/102-Key)
02 N/A
03 Communications Port (COM2)
04 Communications Port (COM1)
05 N/A
06 Standard floppy disk controller
07 N/A
08 System CMOS/real time clock
09 Realtek RTL8139(A) PCI Fast Ethernet

Adapter
10 Realtek RTL8139(A) PCI Fast Ethernet

Adapter
11 Realtek RTL8139(A) PCI Fast Ethernet

Adapter
12 Logitech PS/2 Port Mouse
13 Numeric data processor
14 Primary IDE Channel
15 N/A

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

AR-B1550 User’s Guide

35