AR-B1782 INDUSTRIAL GRADE CPU BOARD User’ s Guide

AR-B1782 

INDUSTRIAL GRADE 

CPU BOARD 

User’ s Guide 

Edition: 1.01 

Book Number: AR-B1782-02.0920

AR-B1782 User’s Guide 

Table of Contents 

0.PREFACE..................................................................................................................................................................... 2 

0.1 COPYRIGHT NOTICE AND DISCLAIMER..................................................................................................................................2 

0.2 WELCOME TO THE AR-B1782 CPU BOARD.............................................................................................................................2 

0.3 BEFORE YOU USE THIS GUIDE ...............................................................................................................................................2 

0.4 RETURNING YOUR BOARD FOR SERVICE .............................................................................................................................2 

0.5 TECHNICAL SUPPORT AND USER COMMENTS .....................................................................................................................2 

0.6 ORGANIZATION.........................................................................................................................................................................3 

0.7 STATIC ELECTRICITY PRECAUTIONS .....................................................................................................................................3 

1. INTRODUCTION.......................................................................................................................................................... 4 

1.1 CHECK LIST...............................................................................................................................................................................4 

1.2 PRODUCT SPECIFICATION ......................................................................................................................................................5 

1.3 SYSTEM ARCHITECTURE.........................................................................................................................................................6 

2. HARDWARE CONFIGURATION SETTING ................................................................................................................ 7 

2.1 JUMPERS...................................................................................................................................................................................7 

2.1.1 RTC CMOS Clear Jumper Setting (JP1)...............................................................................................................................7 

2.1.2 Disk-On-Chip Memory address Space Selection (JP2).........................................................................................................8 

2.1.3 Watch-Dog Timer Jumper Setting (JP4, JP3) .......................................................................................................................8 

2.2 CONNECTORS...........................................................................................................................................................................9 

2.2.1 Front Panel interface (J1) ...................................................................................................................................................10 

2.2.2 Power Connector (J4).........................................................................................................................................................10 

2.2.3 ATX12V Power Connector (J5)...........................................................................................................................................11 

2.2.4 Parallel Port (J8).................................................................................................................................................................11 

2.2.5 COM1 Serial Interface (J15) ...............................................................................................................................................11 

2.2.6 COM2 Interface (J11) .........................................................................................................................................................12 

2.2.7 CD-ROM Audio in (J12)......................................................................................................................................................12 

2.2.8 ATX power button interface (J13) .......................................................................................................................................12 

2.2.9 External USB (J14).............................................................................................................................................................12 

2.2.10 CPU/System FAN (J9/J23) ...............................................................................................................................................13 

2.2.11 Standard IrDA (J10)..........................................................................................................................................................13 

2.2.12 Ethernet RJ-45 Connector (J16) .......................................................................................................................................14 

2.2.13 ATX power controller (J21) ...............................................................................................................................................14 

2.2.14 External keyboard (J24)....................................................................................................................................................14 

2.2.15 Proprietary PCI interface #1 / #2(J22/J17) ........................................................................................................................15 

2.2.16 PS/2 Keyboard & Mouse (J26) .........................................................................................................................................16 

2.2.17 Hard Disk (IDE) Connector (J2/J7) ...................................................................................................................................16 

2.2.16 FDD Port Connector (J3) ..................................................................................................................................................17 

2.2.17 VGA Interface (J20)..........................................................................................................................................................17 

3. SYSTEM INSTALLATION ......................................................................................................................................... 18 

3.1 CPU ..........................................................................................................................................................................................18 

3.2 MAIN MEMORY ........................................................................................................................................................................18 

3.3 M-SYSTEM FLASH DISK..........................................................................................................................................................18 

3.4 INSTALLING THE SINGLE BOARD COMPUTER.....................................................................................................................19 

3.4.1 SIS 650 Integrated Graphic Controller ................................................................................................................................19 

3.4.2 SIS 961 Integrated Ethernet Controller...............................................................................................................................19 

3.4.3 Drivers Support ..................................................................................................................................................................20 

3.5 WATCH-DOG TIMER PROGRAMMING ...................................................................................................................................20 

4. BIOS SETUP INFORMATION ................................................................................................................................... 21 

4.1 ENTERING SETUP...................................................................................................................................................................21 

4.2 MAIN MENU..............................................................................................................................................................................21 

4.3 CMOS SETUP REFERENCE TABLE........................................................................................................................................22 

4.4 ADVANCED CMOS SETUP DEFAULTS...................................................................................................................................22 

4.5 ADVANCED CHIPSET SETUP DEFAULTS..............................................................................................................................23 

4.6 POWER MANAGEMENT SETUP DEFAULTS ..........................................................................................................................23 

4.7 PCI / PLUG AND PLAY SETUP DEFAULTS.............................................................................................................................24 

4.8 PERIPHERAL SETUP DEFAULTS ...........................................................................................................................................25 

4.9 STANDARD CMOS SETUP MENU...........................................................................................................................................25 

4.10 ADVANCED CMOS SETUP MENU.........................................................................................................................................26 

4.11 ADVANCED CHIPSET SETUP MENU....................................................................................................................................27 

4.12 POWER MANAGEMENT SETUP MENU ................................................................................................................................27 

4.13 PCI/PLUG AND PLAY SETUP ................................................................................................................................................28 

4.14 PERIPHERAL SETUP.............................................................................................................................................................29 

4.15 HARDWARE MONITOR SETUP.............................................................................................................................................30 

4.16 BIOS POST CHECK POINT LIST ...........................................................................................................................................30 

JUMPER/CONNECTOR QUICK REFERENCE ............................................................................................................ 34 

1


0.PREFACE 

0.1 COPYRIGHT NOTICE AND DISCLAIMER 

This document is copyrighted, 2002, by Acrosser Technology Co., Ltd. All rights are reserved. No part of this 

manual may be reproduced, copied, transcribed, stored in a retrieval system, or translated into any language or 

computer language in any form or by any means, such as electronic, mechanical, magnetic, optical, chemical, 

manual or other means without the prior written permission or original manufacturer. 

Acrosser Technology assumes no responsibility or warranty with respect to the content in this manual and 

specifically disclaims any implied warranty of merchantability or fitness for any particular purpose. Furthermore, 

Acrosser Technology reserves the right to make improvements to the products described in this manual at any 

times without notice. Such revisions will be posted on the Internet (WWW.ACROSSER.COM) as soon as possible. 

Possession, use, or copy of the software described in this publication is authorized only pursuant to valid written 

license from Acrosser or an authorized sub licensor. 

ACKNOWLEDGEMENTS 

Acrosser, AMI, IBM PC/AT, ALI, Windows 3.1, MS-DOS…are registered trademarks. 

All other trademarks and registered trademarks are the property of their respective owners. 

0.2 WELCOME TO THE AR-B1782 CPU BOARD 

This guide introduces the Acrosser AR-B1782 CPU Board. 

Use information provided in this manual describes this card’s functions and features. It also helps you start, set up 

and operate your AR-B1782. General system information can also be found in this publication. 

0.3 BEFORE YOU USE THIS GUIDE 

Please refer to the Chapter 3, “Setting System,” in this guide, if you have not already installed this AR-B1782. 

Check the packing list before you install and make sure the accessories are completely included. 

AR-B1782 CD provides the newest information regarding the CPU card. Please refer to the README.DOC file 

of the enclosed utility diskette. It contains the modification and hardware & software information, and adding the 

description or modification of product function after manual printed. 

0.4 RETURNING YOUR BOARD FOR SERVICE 

If your board requires any services, contact the distributor or sales representative from whom you purchased the 

product for service information. If you need to ship your board to us for service, be sure it is packed in a protective 

carton. We recommend that you keep the original shipping container for this purpose. 

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

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

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

3. A brief description of the problem occurred. 

0.5 TECHNICAL SUPPORT AND USER COMMENTS 

Users comments are always welcome as they assist us in improving the quality of our products and the readability 

of our publications. They create a very important part of the input used for product enhancement and revision. 

We may use and distribute any of the information you provide in any way appropriate without incurring any 

obligation. You may, of course, continue to use the information you provide. 

If you have any suggestions for improving particular sections or if you find any errors on it, please send your 

comments to Acrosser Technology Co., Ltd. or your local sales representative and indicate the manual title and 

book number. 

Internet electronic mail to: Sales@acrosser.com 

acrosser@tp.globalnet.com.tw 

2


0.6 ORGANIZATION 

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

! Chapter 1, “Introduction”, presents what you have inside the box and gives you an overview of the 

product specifications and basics system architecture for the AR-B1782 server board. 

! Chapter 2, “Hardware Configuration Setting” shows the definitions and locations of Jumpers and Connectors 

so that you can easily configure your system. 

! Chapter 3, “System Installation,” describes how to properly mount the CPU, main memory, and M-System 

Flash disk for a safe installation. It will also introduce and show you the driver installation procedure for the 

Graphics Controller and Ethernet Controller. 

! Chapter 4, ”BIOS Setup Information,” specifies the meaning of each setup parameter, how to get advanced 

BIOS performance and update to a new BIOS. Additionally, the POST checkpoint list will give you a guide 

for troubleshooting. 

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. 

3


1. INTRODUCTION 

The AR-B1782 Pentium 4 all-in-one full-sized single board computer is designed to fit a high performance 478-pin 

Intel Pentium 4 processor up to 2.2GHz. Two DDR (Double Data Rate) SDRAM DIMMs support maximum 2Gbytes 

capacity with DDR266/200 specification. AR-B1782 is compatible for high-end computer system application with 

PCI bus architecture. It is made to meet today’s demanding pace, and keep complete compatibility with hardware 

and software designed for the IBM PC/AT. 

The on-board devices support one graphic controller offering 4X AGP and up to 64MB of sharing system memory, 

one SIS961 integrated Ethernet, one AC97 audio controller, watchdog timer, DiskOnChip socket, ISA high driving 

capability, two USB V1.1 ports, and two Proprietary PCI-bus slots. It’s beneficial to build up a high performance and 

high data availability system for VARs and system integrators. The enhanced on-board PCI-IDE interface can 

support 4 drives up to PIO mode 4 timing and Ultra ATA33/66/100 synchronous mode feature. The on-board Super 

I/O chipset integrates floppy controller, two serial ports, one SIR (Serial Infrared) port, and one parallel port. Two 

high performance 16C550-compatible UARTs provide 16-byte Transmit/Receive FIFOs, and the multi-mode parallel 

port supports SPP/EPP/ECP function. 

The PICMG bus standard makes the AR-B1782 works with the legacy ISA except Bus Master function, ISA/PCI, or 

multi-slots PCI bus backplane. The on-board 32-pin DIP socket supports M-System single-chip flash disk 

DiskOnChip Millennium 8 Mbytes or DiskOnChip 2000 up to 576 Mbytes. The built-in Watch-Dog Timer function is 

designed to monitor your system status in running special AP. One 6-pin Mini-DIN connector is used to support both 

PS/2 mouse and keyboard. The on-board Flash ROM is used to make the BIOS update easier. An additional 5-pin 

shrouded connector is reserved for connecting keyboard interface on the backplane. The high precision Real Time 

Clock /calendar is built to support Y2K for accurate scheduling and storing configuration information. One 4-pin 

header is designed to support ATX power function. All of these features make AR-B1782 excellent in stand-alone 

applications. 

1.1 PACKING LIST 

The standard AR-B1782 package includes the following basic items: 

! The quick setup manual 

! 1 AR-B1782 CPU board 

! 1 Hard disk drive adapter cable 

! 1 Floppy disk drive adapter cable 

! 1 Parallel port and serial port adapter cable mounted on one bracket 

! 1 Software utility CD 

! 1 Audio interface cable mounted on one bracket 

! 1 ATX power control interface cable 

If any of these items is damaged or missed, please contact your local sales representative, and save all packing 

materials for future replacement and maintenance. 

4


1.2 PRODUCT SPECIFICATION 

# Chipset 

! SIS 650+961 Chipset 

# CPU 

! Support 478-pin Intel Pentium 4 processors up to 2.2GHz with 400MHz data transfer rate 

# Main Memory 

! Support two un-buffered double-side 184-pin DDR200/266 SDRAM DIMMs 

! Up to 1GB per DIMM with maximum memory size to 2GB 

! Support 16Mb, 64Mb, 128Mb, 256Mb SDRAM technology with page size from 2KB up to 16KB 

# System BIOS 

! AMI BIOS with PC’98 support 

! 4Mb Flash ROM for easy upgrade 

! Support ACPI, DMI, PnP, and Green function 

# LPC Super I/O 

! FDD Interface: support one FDD port up to two floppy disk drives 

! Serial Port: support two standard RS-232 ports 

! IrDA Interface: support one Infrared port 

! Parallel Port: support one SPP, EPP/ECP Bi-directional parallel port 

# IDE Interface 

! Support two enhanced IDE ports up to four drives with Ultra DMA 33/66/100 

# USB 

! Support two V1.1 USB ports 

# Keyboard and PS/2 Mouse Interfaces 

! Supports one 6-pin Mini-DIN connector for K/B and Mouse (via Y-cable) 

! Supports one 5-pin header connector for external Keyboard connection 

# Auxiliary I/O 

! One 2-pin system reset switch 

! One 4-pin external speaker interface 

! One 2-pin HDD active indicator interface 

! One 2-pin ATX power control interface 

# On-board Solid State Disk Solution 

! Supports M-System Flash disk with DiskOnChip Millennium 8 Mbytes or DiskOnChip 2000 up to 576 

Mbytes (one 32-pin DIP single chip) 

# On-board AC97 Audio 

! On-board AC97 codec 

! Line-In 

! Line-out 

! Microphone-In 

! CD-In 

# Real-Time Clock/Calendar (RTC) 

! Built-in SIS 961 to support Y2K RTC with external Li-battery backup for data retention 

# Watch-Dog Timer 

! Support time-out intervals from 1 to 63 seconds by software programming 

# System Monitoring and Protection 

! Monitoring system temperature, voltage, and cooling fan status 

! System automatically restored on recovery of AC power loss 

# High Driving Capability 

! Support high driving capability for ISA-bus 

# Bus Interface 

! Follow PICMG standard (32-bit PCI and 16-bit ISA) 

! Supports 4 master of PCI slot 

# Wake On LAN & Modem Ring on 

! Support system wake up function from Network and Modem 

# Cooling Fan Connectors 

! Support two 3-pin headers for CPU cooling and system fan power interface 

# On-chip 3D AGP VGA Display 

! One DSUB-15 connector for CRT display interface 

! Support resolution up to 2048 x 1536, 32 bit colors for 3D at refresh rates 75Hz 

! Support Ultra-AGP TM with 2GB/s bandwidth 

# On-board Ethernet Function 

! Chipset integrated LAN controller (SIS 961) 

! Support 10/100BASE-T with RJ-45 interface port 

! Support two LED indicators to display active and link message 

5


# Two Proprietary PCI Interfaces 

! Reserved two 80-pin Proprietary PCI connectors for extended PCI device modules (e.g. Ultra160 SCSI, 

Intel 82559LAN, IEEE1394, and Audio, etc.) 

# Physical and Environmental requirements 

! Outline Dimension (L X W): 339.5mm (13.36 inch) X 121.5m (4.78 inch) 

! PCB layout: 6-layer (double-side components) 

! Power Requirements: +5V@5A (typ.), +12V@1.5A, -12V@30mA 

! Operating Temperature: 0 – 55 degree C 

! Relative Humidity: 5% to 95%, non-condensing 

1.3 SYSTEM ARCHITECTURE 

The following illustration of block diagram will show you how AR-B1782 gives you a highly integrated system 

solution. The most up-to-date system architecture of AR-B1782 includes two main VLSI chips, SIS 650(IGUI) Host 

Bridge and SIS 961, to support Intel Pentium 4 (mPGA478) processor, DDR RAM with non ECC, PCI bus interface, 

ACPI compliant power management, USB ports, AC97 audio, and Ultra ATA/33/66/100 IDE Bus Master. The 

on-board super I/O chip, ITE8705F, will support two UARTs, FDC, Parallel port and Infrared interface. Besides, 

VGA is integrated in SIS 650 chipset; Ethernet device will provide user more flexibility and reliability in a highly 

integrated application. 

AR-B1782 built-in Socket 478 supports Intel Pentium 4 processors for high performance and cost-effective 

application. The North Bridge SIS 650(IGUI) provides a completely integrated solution for the system controller 

and data path components in a processor system. The South Bridge, SIS 961, provides two Ultra ATA 33/66/100 

IDE master interface, full Plug-and-Play compatibility 8042keyboard controller with PS/2 keyboard/mouse port, 

and Advanced Programmable Interrupt Controller (APIC) interface on AR-B1782. It also supports 2-port Universal 

Serial Bus (USB), PCI 2.1 Compliance operation and internal Real-time Clock (RTC) to maintain date and time of 

system. 

The LPC Super I/O chip ITE8705F integrates two high-speed serial ports, one parallel port, one SIR interface, and 

FDD interface. The parallel port supports one PC-compatible printer port (SPP), Enhanced Parallel Port (EPP) and 

Extended Capabilities Port (ECP). In addition, it offers H/W monitoring function for system operation. 

LPC to ISA Bridge, Winbond W83626F, provides 16-bit ISA bus slot and applied for all of slower I/O operations 

except for ISA Bus Master function. In AR-B1782, it contains Watch-dog Timer (WDT) feature enabled and 

activated by software setting, and supports Disk-On-Chip (DOC) socket for M-system Flash disk. 

All of details operating relations are shown in Figure 1-1 AR-B1782 System Block Diagram. 

Intel Pentium 4 Processor 

(mPGA478) 

VGA Display 

HOST BUS 

RJ45 

(10/100Mbps) 

SIS650 DDR SDRAM DIMMX 2 

MEMORY BUS 

PHYCEIVER 

IDE X 2 

(4 DEVICES) 

AUDIO 

CODEC 

LINE IN 

LINE OUT 

MIC 

MII INTERFACE 

IDE BUS 

AUDIO LINK 

2 USB PORTS 

2 PROPRIETARY 

PCIs 

MuTIOL BUS 

SIS961 

PCI BUS 

LPC BUS 

LPC-ISA 

ISA BUS 

PS/2 KB & MS 

SUPER I/O 

WDT 

DOC 

FDD (2 DEVICES) 

PARALLEL PORT 

2 COM PORTS 

IR 

CD IN 

4 PCI SLOTS 

(PCI 2.1) 

BIOS 

BUFFER 

ISA MAX BUS 

ISA SLOTS 

Figure 1-1 System Block Diagram 

6


2. HARDWARE CONFIGURATION SETTING 

This chapter gives the definitions and shows the positions of jumpers, headers and connectors. All of the 

configuration jumpers on AR-B1782 are in the proper position. The default settings shipped from factory are marked 

with an asterisk ($). 

2.1 JUMPERS 

In general, jumpers on the single board computer are used to select options for certain features. Some of the 

jumpers are designed to be user-configurable, allowing for system enhancement. The others are for testing 

purpose only and should not be altered. To select any option, cover the jumper cap over (SHORT) or remove (NC) 

it from the jumper pins according to the following instructions. Here NC stands for “Not Connect”. (Please refer to 

Figure 2-1 for jumper positions) 

DIMM1 

DIMM2 

JP1 

ITE 

IT8705F 

SIS 

650 

SIS 

961 

Proprietary PCI 

JP2 1 

3 

JP3 

JP4 

Socket 478 


Figure 2-1 Jumper Location 

2.1.1 RTC CMOS Clear Jumper Setting (JP1) 

1 

1 

2 

Normal 

2 

Clear cmos 

3 

operation 

3 

contents 

JP1 

JP1 

1-2 Normal operation$ 

2-3 Clear CMOS contents 

7


2.1.2 Disk-On-Chip Memory address Space Selection (JP2) 

2 4 

2 4 

1 3 

D0000-D1FFF 

2 4 

1 3 

D2000-D3FFF 

2 4 

1 3 

D4000-D5FFF 

1 3 

D6000-D7FFF 

Memory address Space Pin 1-2 Pin 3-4 

D0000-D1FFF$ SHORT SHORT 

D2000-D3FFF NC SHORT 

D4000-D5FFF SHORT NC 

D6000-D7FFF NC NC 

2.1.3 Watch-Dog Timer Jumper Setting (JP4, JP3) 

2 

2 

Disable 

Enable 

1 

JP3 

JP4 

2 

1 

JP3 

Dis/Enable WDT function 

NC Disable 

SHORT Enable$ 

2 

0543H 

0443H 

JP3 

1 

JP3 

1 

JP3 

I/O address for S/W programming 

NC 0543H 

SHORT 0443H$ 

8


2.2 CONNECTORS 

I/O peripheral devices and Flash disk will be connected to these interface connectors and DOC socket located 

on this single board computer. 

1 

13 

J1 

J5 

J9 

J9 

J4 

DIMM1 

DIMM2 

J14 

J2 

J7 

J10 

ITE 

IT8705F 

J13 

J11 

J3 

J8 

J12 

J6 

Socket 478 

SIS 

650 

J23 

J21 

SIS 

961 

J22 



J17 

DOC (J25) 

J24 

J15 

J16 

J20 

J26 

Figure 2-2 Connector Locations 

CONNECTOR FUNCTION REMARK 

J1 

Front Panel interface 

J2 IDE1 (Primary) interface 2x20 shrouded header 

J3 Floppy connector 2x17 shrouded header 

J4 

Power connector 

J5 

ATX12V power connector 

J6 

External Audio signal interface 

J7 IDE2 (Secondary) interface 2x20 shrouded header 

J8 Parallel port connector 2x13 shrouded header 

J9 

CPU Fan interface 

J10 

Standard IrDA (Infrared) port 

J11 COM2 serial port 2x5 shrouded header 

J12 CD-ROM Audio in interface 4-pin Mini-Din 

J13 ATX power button interface 2-pin Mini-Din 

J14 

External USB interface 

J15 COM1 serial interface DSUB-9 

J16 

RJ-45 Ethernet connector 

J17 

Proprietary PCI #2 interface 

J18 

CPU (mPGA478) socket 

J20 VGA interface DSUB-15 

J21 ATX power control interface Connect to Backplane 

J22 

Proprietary PCI #1 interface 

J23 

System Fan interface 

J24 External Keyboard interface Connect to Backplane 

J25 

M-SYSTEM Disk-On-Chip socket 

J26 

PS/2 keyboard & mouse 

connector 

6-pin Mini-Din 

9


2.2.1 Front Panel interface (J1) 

1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

1: Reset 

2: Ground 

3: Signal 

4: NC 

5: Ground 

6: +5V 

7: +5V(Pull-up for power LED) 

8:NC 

9: Ground 

10: NC 

11: Ground 

12: +5V (Pull-up for HDD LED) 

13: HDD active# (LED cathode terminal) 

J1 

PIN No. Signal Description 

System reset 

1 Reset 

2 Ground 

External speaker 

3 Signal 

4 NC 

5 Ground 

6 +5V 

Power indicator 

7 +5V (Pull-up for power LED) 

8 NC 

9 Ground 

10 NC 

11 Ground 

IDE active indicator 

12 +5V (Pull-up for HDD LED) 

HDD active# (LED cathode 

13 

terminal) 

2.2.2 Power Connector (J4) 

1 

2 

3 

4 

J4 

1: +12V 

2: GND 

3: GND 

4: +5V 


1 +12V 

2 GND 

3 GND 

4 +5V 

10


2.2.3 ATX12V Power Connector (J5) 

4 3 

2 1 

J5 


1 GND 

2 GND 

3 +12V 

4 +12V 

2.2.4 Parallel Port (J8) 

2 26 

1 

25 

PIN No. Signal Description PIN No. Signal Description 

1 Strobe# 14 Auto Form Feed# 

2 Data0 15 Error# 

3 Data1 16 Initialization# 

4 Data2 17 Printer Select IN# 

5 Data3 18 Ground 





10 Acknowledge# 23 Ground 

11 Busy 24 Ground 

2.2.5 COM1 Serial Interface (J15) 

1 2 3 4 5 

6 7 8 9 


1 Data Carrier Detect 

2 Data Set Ready 

3 Received Data 

4 Request To Send 

5 Transmit Data 

6 Clear To Send 

11


2.2.6 COM2 Interface (J11) 

2 10 

1 

9 


1 Data Carrier Detect 

2 Data Set Ready 

3 Received Data 

4 Request To Send 

5 Transmit Data 

6 Clear To Send 

7 Data Terminal Ready 

8 Ring Indicator 

9 Ground 

10 Not used 

2.2.7 CD-ROM Audio in (J12) 

1 

2 

3 

4 

J4 

1: Left channel 

2: GND 

3: GND 

4: Right channel 


1 Left channel 

2 GND 

3 GND 

4 Right channel 

2.2.8 ATX power button interface (J13) 

It connects to power button 

1 

2.2.9 External USB (J14) 

1 9 

2 

2 

10 


1 +5V 2 Ground 

3 USBP0- 4 Ground 

5 USBP0+ 6 USBP1+ 

7 Ground 8 USBP1- 

9 Ground 10 +5V 

12


2.2.10 CPU/System FAN (J9/J23) 

1: GND 

1 

2: +12V 

2 

3: +5V 

3 

J9 


1 Ground 

2 +12V 

3 RPM signal 

2.2.11 Standard IrDA (J10) 

1 

2 

3 

4 

5 

6 

J10 

1: +5V 

2: NC 

3: IRRX 

4: Ground 

5:IRTX 

6:NC 


1 +5V 

2 NC 

3 IRRX 

4 Ground 

5 IRTX 

6 NC 

13


2.2.12 Ethernet RJ-45 Connector (J16) 

The Ethernet RJ-45 connectors are the standard network headers. The following table is the pin assignment. 

8 1 

RJ-45 Pin Assignment 

2.2.13 ATX power controller (J21) 

1 

2 

3 

4 

J21 

1: Power good 

2: +5V stand-by 

3: Power-on 

4:control 


1 Power good 

2 5V stand-by 

3 Power-on control 

4 Ground 

2.2.14 External keyboard (J24) 

LAN1, LAN2 

FUNCTION 

1 TPTX+ 

2 TPTX - 

3 TPRX+ 

4 Not Used 

5 Not Used 

6 TPRX - 

7 Not Used 

8 Not Used 

1 

2 

3 

4 

4 

J24 

1: Keyboard clock 

2: Keyboard data 

3: NC 

4: Ground 

5: +5V 


1 Keyboard clock 

2 Keyboard data 

3 NC 

14


2.2.15 Proprietary PCI interface #1 / #2(J22/J17) 


1 +12V 2 AGND 

3 +12V 4 AGND 

5 VSYNC 6 RED 

7 GND 8 GREEN 

9 HSYNC 10 BLUE 

11 PCICLK 12 GND 

13 GND 14 PIRQ 

15 PREQ 16 PGNT 

17 AD31 18 PCIRESET 

19 AD29 20 +3.3V 

21 DEVSEL 22 +3.3V 

23 AD27 24 AD30 

25 AD25 26 AD28 

27 C/BE3 28 GND 

29 +3.3V 30 AD26 

31 +3.3V 32 AD24 

33 AD23 34 IDSEL 

35 AD21 36 AD22 

37 AD19 38 AD20 

39 GND 40 GND 

41 AD17 42 AD18 

43 C/BE2 44 AD16 

45 IRDY 46 FRAME 

47 PERR 48 TRDY 

49 SERR 50 PAR 

51 C/BE1 52 STOP 

53 AD14 54 AD15 

55 AD12 56 AD13 

57 GND 58 AD11 

59 AD10 60 LOCK 

61 AD8 62 AD9 

63 GND 64 C/BE0 

65 AD7 66 AD6 

67 AD5 68 AD4 

69 AD3 70 GND 

71 AD1 72 AD2 

73 +5V 74 AD0 

75 +5V 76 GND 

77 +5V 78 +3.3V 

79 +5V 80 +3.3V 

15


2.2.16 PS/2 Keyboard & Mouse (J26) 

1 KDT 

2 MDT 

3 GND 

4 VCC 

5 KCLK 

6 MCLK 

KM 

1 2 

3 4 

5 6 

Front View 

PIN No. 

Signal Description 

1 Keyboard Data 

2 Mouse Data 

3 Ground 

4 +5V 

5 Keyboard Clock 

6 Mouse Clock 

2.2.17 Hard Disk (IDE) Connector (J2/J7) 

A 40-pin header type connector (J2/J7) is provided to interface with up to two embedded hard disk drives (IDE 

AT bus). This interface, through a 40-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. The following 

table illustrates the pin assignments of the hard disk drive’s 40-pin connector. 

2 40 

1 

39 

Pin Signal Pin Signal 

1 -RESET 2 GROUND 

3 DATA 7 4 DATA 8 




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 

Hard Disk (J2/J7) Connector 

16


2.2.16 FDD Port Connector (J3) 

The AR-B1782 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. 

2 

34 

1 

33 

2.2.17 VGA Interface (J20) 

5 

J3: 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 

1 

FDD Pin Assignment 

10 

6 

15 11 

1 Red 6 GND 11 N.C 

2 Green 7 GND 12 N.C 

3 Blue 8 DDCD 13 H.S 

4 N.C 9 N.C 14 V.S 

5 GND 10 DDCK 15 N.C 

17


3. SYSTEM INSTALLATION 

This chapter provides you with instructions on how to setup your system. The additional information shows you 

how to install M-System flash disk and handle WDT operation in software application program. 

3.1 CPU 

Installing Pentium 4 CPU: 

(1) Lift the handling lever of CPU socket outwards and upwards to the other end. 

(2) Align the processor pins with pinholes on the socket. Make sure that the notched corner or dot mark (pin 1) of 

the CPU corresponds to the socket’s bevel end. Then press the CPU gently until it fits into place. If this 

operation is not easy or smooth, do not do it forcibly. Before installation, you need to check and rebuild the CPU 

pin uniformly. 

(3) Push down the lever to lock processor chip into the socket. 

(4) Follow the installation guide of cooling fan or heat sink to mount it on CPU surface and lock it on the socket 

478. 

(5) Be sure to follow particular CPU speed to adjust the items CPU/DRAM Base Frequency in ADVANCED 

CHIPSET SETUP DEFAULTS in HIFLEX BIOS setup properly. 

3.1.2 Removing CPU 

(1) Unlock the cooling fan first. 

(2) Lift the lever of CPU socket outwards and upwards to the other end. 

(3) Carefully lifts up the existing CPU to remove it from the socket. 

(4) Follow the steps of installing a CPU to change to another one or place handling bar to close the opened socket. 

3.2 MAIN MEMORY 

AR-B1782 provides 2 DDR SDRAM modules (184-pin Dual In-line Memory Module) to support 2.5V DDR RAM 

(Double Data Rate) as on-board main memory. The memory capacity is ranged from 128MB to 1GB with using 

16Mb/64Mb/128Mb/256Mb technology. It supports up to 2 double-sided DDR RAM at 133MHz system memory 

bus. The memory architecture adopts 64-bit data interface to support for x8 and x16 DDR RAM device width. In 

addition, it also supports Un-buffered, Non-ECC DDR RAM and Enhanced Open page arbitration DDR RAM 

paging scheme. 

For system compatibility and stability, do not use memory module without brand. You can also use the single or 

double-side DIMM .The two DDR RAMs can be out of order to install on DIMM socket. Certainly, you can also 

install different size of DDR RAM module on DIMM1, DIMM2 or all to boot up system. 

Watch out the contact and lock integrity of memory module with socket, it will impact on the system reliability. 

Follow normal procedure to install your DDR RAM module into memory socket. Before locking, make sure that the 

module has been fully inserted into the DIMM slot. 

NOTE: For maintaining system stability, do not change any of DDR RAM parameters in BIOS setup to 

upgrade your system performance without acquiring technical information. 

3.3 M-SYSTEM FLASH DISK 

AR-B1782 reserves on 32-pin DIP socket for installing M-System flash disk from 8MB (DOC 2000 and DOC 

Millennium) to 576MB (DOC 2000 only). This operation architecture is running with pure ISA bus without PnP 

(Plug and Play) function. Before installing, make certain that I/O address jumper setting is set on right position to 

prevent unworkable system due to I/O resource conflict. Do remember to follow DOC (Disk-On-Chip). Installation 

procedure. Otherwise, the flash chip is possible to be burned out due to incorrect installation. 

Installing DOC 

Align the DOC with pinholes on the socket. Make sure that the notched corner or dot mark (pin 1) of DOC 

corresponds to notched corner of the socket. Then press the DOC gently until it fits into place. If installation 

procedure is correct, the flash disk can be viewed as a normal hard disk to access read/write data. 

WARNING: Please ensure that your DOC is properly inserted. Placing DOC in reverse will cause sever 

damage it. 

If you want to boot from flash disk, it is necessary to refer to the application note from M-System. You can easily 

obtain relative information from M-System shipping package (such as product manual) or web site 

http://www.m-sys.com. 

18


3.4 INSTALLING THE SINGLE BOARD COMPUTER 

To install your AR-B1782 into standard chassis or proprietary environment, you need to perform the following 

steps: 

(1) Check all jumpers setting on proper position 

(2) Install and configure CPU and memory module on right position 

(3) Place AR-B1782 into the dedicated position in your system 

(4) Attach cables to existing peripheral devices and secure it 

WARNING: Please ensure that your SBC properly inserted and fixed by mechanism. Otherwise, the system 

might be unstable or do not work from bad contact of golden finger. 

3.4.1 SIS 650 Integrated Graphic Controller 

The on-board graphics controller integrated in SIS 650(IGUI) chipset that integrates high performance memory 

technology for the graphics frame buffer, 32-bit data interface, and sharing system DDR RAM. The AR-B1782 is 

designed to support high performance graphics and video acceleration for all supported display resolutions, 

display types, and color modes on CRT monitor. 

The SIS 650 supports the modes, which appear in the table below. 

Resolution 

MAX. Bits Per Pixel (Frequency in Hz) 

8-bit Indexed 16-bit 32-bit 

320x240 85 85 85 

512x384 85 85 85 

400x300 85 85 85 

640x480 85 85 85 

800x480 85 85 85 

800x600 85 85 85 

1024x576 85 85 85 

1024x768 85 85 85 

1280x1024 85 85 85 

1600x1200 85 85 85 

1920x1440 85 85 85 

2048x1536 75 75 75 

3.4.2 SIS 961 Integrated Ethernet Controller 

The SIS 961 is fully integrated 10BASE-T/100BASE-TX LAN solution. The 32-bit PCI controller provides 

enhanced scatter-gather bus mastering capabilities and enables the SIS 961 to perform high-speed data transfers 

over the PCI bus. Its bus master capabilities enable the component to process high level commands and perform 

multiple operations, which lower CPU utilization by off-loading communication tasks from the CPU. 

The AR-B1782 provides two LED indicators on RJ-45 connector to show LAN interface status. These messages 

will give you a guide for troubleshooting. 

Yellow LED indicates transmit and receive activity. 

Blinking: indicates transmit/receive activity 

On: indicates no activity but link is valid 

Off: link is invalid 

Green LED indicates Link speed 

On: link speed at 100Mbps 

Off: link speed at 10Mbps 

19


3.4.3 Drivers Support 

AR-B1782 provides one CD-Title to support on-board peripheral device drivers in various operating systems. 

Before installing the device drivers, please see the reference files in each sub-directory. You cannot install 

drivers from CD-Title directly. 

SIS 650 integrated graphic controller: Support Windows 9x, Windows NT 4.0, Windows 2000, … 

SIS 961 integrated Ethernet: Support Windows 9x, Windows NT 4.0, Windows 2000, … 

SIS 961 integrated AC97 controller: Support Dos, Windows 9x, Windows NT, Windows 2000, … 

3.5 WATCH-DOG TIMER PROGRAMMING 

To activate the Watch-Dog Timer (WDT) function, you have to program I/O port 443H or 543H, reference to 

section 2.1. After this feature is enabled, a system reset will be generated unless an application triggers the timer 

periodically within time-out period. This allows the system to restart in an orderly way in case of any abnormal 

condition is found. 

This WDT comes with 63 possible ranges of time intervals from 1s to 63sec., which can be adjusted by software 

programming. It could be enabled and programmed by writing I/O port 443H or 543H to issue trigger continuously, 

and disabled by programming the same port. A tolerance of 10% timer limit must be considered. For instance, if 

the time-out interval is set to 1 second, the WDT trigger command must be issued within 700ms at least. 

The below example gives you a reference algorithm for WDT programming via I/O port 443H in your application 

programs: 

Enable WDT 

Re-trigger WDT 

Disable WDT 

MOV 

MOV 

OUT 

MOV 

MOV 

OUT 

DX, 0443H ← WDT port 

AL, sec ← sec = WDT time ( 1 < sec < 63sec.) 

DX, AL 

DX, 0443H ← WDT port 

AL, sec ← sec = WDT time ( 1 < sec < 63sec.) 

DX, AL 

MOV DX, 0443H 

MOV AL, 0 

OUT DX, AL 

20


4. BIOS SETUP INFORMATION 

AR-B1782 is equipped with the AMI BIOS stored in Flash ROM. These BIOS has a built-in setup program that 

allows users to modify the basic system configuration easily. This type of information is stored in CMOS RAM so 

that it is retained during power-off periods. 

4.1 ENTERING SETUP 

Turn ON or reboot the computer. When the message ”Hit” if you want to run SETUP appears, press 

key immediately to enter BIOS setup program. 

If the message disappears before you respond, but you still wish to enter setup please restart the system to try 

“COLD START” again by turning it OFF and then ON, or touch the “RESET” button. You may also restart from 

“WARM START” by pressing , , and keys simultaneously. If you do not press these keys at the 

proper time the system will not boot, an error message will be displayed and you will again be asked to, 

Press to Run SETUP or Resume 

In HIFLEX BIOS setup, you can use the keyboard to choose among these options, or modify the system 

parameters to match the options with your system. The table below will show you all of keystroke functions in 

BIOS setup. 

EDITING KEYS FUNCTION 

Move to the next field 

←↑→↓ Move the next field to the left, above, right, or below 

Select in the current field 

+ / - Increments /Decrements a value 

Close the current operation and return to previous level 

Returns to the previous option 

Advances to the next option 

/ Select background color 

Show “Save current settings and exit (Y/N)” in main menu 

4.2 MAIN MENU 

Once you enter AR-B1782 AMI BIOS COMS Setup Utility, the Main Menu “Standard CMOS setup” will appear on 

the screen. The Main Menu allows you to select from eleven setup functions and two exit choices. Use arrow keys 

to switch the items and press 

key to accept or enter the sub-menu 

NOTE: It is strongly recommended to reload optimal setting if CMOS is lost or BIOS is updated. 

21


4.3 CMOS SETUP REFERENCE TABLE 

This setup reference table includes all the Optimal, Failsafe, and other option settings in each BIOS setup item. It 

is every easy to take a look for cross-referencing. If you want to go to details, you can go directly by referring to the 

item description in sub-section. 

4.4 ADVANCED CMOS SETUP DEFAULTS 

BIOS Setup Items Optimal Default Failsafe Default Other Options 

Quick Boot Enabled Disabled 

1st Boot Device IDE0 Floppy 

IDE1, IDE2, IDE3, 

CDROM, ATAPI ZIP, 

LS-120, SCSI, Network … 

2nd Boot Device Floppy IDE0 IDE-1, …, CDROM 

3rd Boot Device CDROM CDROM IDE-1, …, ATAPI ZIP 

Try Other Boot Device Yes Yes No 

Floppy Access Control Read-Write Read-Write Read-Only 

Hard Disk Access Control Read-Write Read-Write Read-Only 

S.M.A.R.T. for Hard Disks Disabled Disabled Enabled 

BootUp Num-Lock On On Off 

Floppy Drive Swap Disabled Disabled Enabled 

Floppy Drive Seek Disabled Disabled Enabled 

PS/2 Mouse Support Enabled Enabled Disabled 

System Keyboard Absent Absent Present 

Primary Display Absent Absent VGA/EGA, …, Mono 

Password Check Setup Setup Always 

Boot To OS/2 No No Yes 

System BIOS Cacheable Enabled Disabled 

C000, 16K Shadow Cached Cached Enabled, Disabled 

C400, 16K Shadow Disabled Disabled Cached, Enabled 

C800, 16K Shadow Disabled Disabled Cached, Enabled 

CC00, 16K Shadow Disabled Disabled Cached, Enabled 

D000, 16K Shadow Disabled Disabled Cached, Enabled 



DC00, 16K Shadow Disabled Disabled Cached, Enabled 

22


4.5 ADVANCED CHIPSET SETUP DEFAULTS 


Clock Spread Spectrum Disabled Disabled Enabled 

100MHz/133MHz, 

CPU/DRAM Base 


100MHz/100MHz 100MHz/100MHz 

Frequency 


133MHz/133MHz, … 

CPU Multiple Factory H/W Trap H/W trap X12, X13, X14, … 

Share Memory Size 32MB 32MB 8MB, 16MB, 64MB 

Graphic Win Size 64MB 64MB 

4MB, 8MB, 16MB, 

32MB, 64MB, 128MB 

4.6 POWER MANAGEMENT SETUP DEFAULTS 

23



Power Switch Type Suspend Suspend On/Off 

ACPI Aware O/S Yes Yes No 

Power Management Enabled Enabled Disabled 

Standby Time Out Disabled Disabled 1, 2, 3, 4, 5, 10, 15 Min. 

Suspend Time Out Disabled Disabled 1, 2, 3, 4, 5, … 30 Min. 

Display Time Out Disabled Disabled 1, 2, 5, 10, 15 Min. 

Hard Disk Time Out Disabled Disabled Enabled 

On Board Audio Disabled Disabled Enabled 

On Board Peripheral(s) Disabled Disabled Enabled 

Resume on Modem Ring Disabled Disabled 1, 2, 5, 10, 15 Min 

Restore on AC/Power Loss Power Off Power Off Power On, Last State 

4.7 PCI / PLUG AND PLAY SETUP DEFAULTS 


Plug and Play Aware O/S No No Yes 

Clear NVRAM No No Yes 

PCI Latency Timer (PCI 

32, 96, 128, 160, 

64 64 

Clocks) 

192,224, 248 

Primary Graphics Adapter PCI PCI AGP 

PCI VGA Palette Snoop Disabled Disabled Enabled 

Allocate IRQ to PCI VGA No No Yes 

PCI IDE BusMaster Enabled Disabled 

DMA Channel 0 PnP PnP ISA/ EISA 






IRQ3 PCI/ PnP PCI/ PnP ISA/ EISA 










24


4.8 PERIPHERAL SETUP DEFAULTS 


Audio Device Enabled Enabled Disabled 

Ethernet Device Enabled Enabled Disabled 

USB Device Enabled Enabled Disabled 

USB Function Enabled Enabled Disabled 

USB KB/Mouse/FDD 

Legacy Support 

Enabled Enabled Disabled 

On Board FDC Auto Auto Enabled, Disabled 

On Board Serial Port A 3F8h/COM1 3F8h/COM1 

Auto, 2F8h/COM2, 

3E8h/COM3, 

2E8h/COM4, 

Disabled 

On Board Serial Port B 2F8h/COM2 2F8h/COM2 

Auto, 3F8h/COM1, 

3E8h/COM3, 2E8h/COM4, 

Disabled 

Serial Port 2 Mode Normal Normal IrDA, ASK-IR 

On Board Parallel Port 378h 378h 

Auto, Disabled, 278h, 

3BCh 

Parallel Port Mode EPP+ECP SPP EPP, ECP 

Parallel Port IRQ 7 7 5 

Parallel Port DMA 

Channel 

3 N/A 0, 1, 3 

On Board IDE Both Both 

Disabled, Primary, 

Secondary 

4.9 STANDARD CMOS SETUP MENU 

This setup page includes all the items in standard compatible BIOS. Use the arrow keys to highlight the item and 

then use the / or / keys to select the value or number you want in each item and press 

key to certify it. 

Follow command keys in CMOS Setup table to change Date, Time, Drive type, and Boot Sector Virus Protection 

Status. 

25


4.10 ADVANCED CMOS SETUP MENU 

This setup includes all of the advanced features in the system. The detail descriptions are specified as below 

Quick Boot 

When enabled, speeds up the booting procedure by shortening or skipping some check items during POST. 

1st Boot Device 

2nd Boot Device 

3rd Boot Device 

Try Other Boot Device 

These items allow you to set the sequence of booting, i.e., which drive to search first for the operating system. 

Or look for other drive (device) to search for an operating system. 

Floppy Access Control 

Hard Disk Access Control 

These items allow you to set Floppy and Hard Disk access mode. You can set Floppy and Hard Disk full control. 

Or make them read only. 

S.M.A.R.T for Hard Disks 

This allows you to activate the S.M.A.R.T. (Self-Monitoring Analysis & Reporting Technology) capability for the 

hard disks. S.M.A.R.T is a utility that monitors your disk status to predict hard disk failure. This gives you an 

opportunity to move data from a hard disk that is going to fail to a safe place before the hard disk becomes offline. 

Boot Up Num-Lock 

This item sets if the Num Lock key will be automatically activated after system startup. 

Floppy Drive Swap 

This feature allows you to exchange the drive names of the two floppy disk drives, if installed. Make sure that 

Drive A and Drive B item in the “Standard CMOS Setup” menu are updated accordingly. 

Floppy Drive Seek 

This item sets if the system will verify if the floppy disk drive type is 40 or 80 track type during POST. The 360 KB 

diskette is 40 tracks while 720 KB, 1.2 MB and 1.44 MB are all 80 tracks. 

PS/2 Mouse Support 

This item enables or disables the IRQ12 for PS/2 mouse. 

System Keyboard 

This item sets if the system will verify PS/2 keyboard present. 

Primary Display 

This item sets if the system will verify graphic card present. 

Password Check 

This option enables the password checking when the system boots up or runs CMOS Setup. It only takes effect 

after setting Change Supervisor Password. 

(1) Setup: This option will force system to check password before running Setup if you have already entered the 

current user password in “Change User Password”. By that time, the system will be only able to boot 

but deny accessing Setup. 

(2) Always: Password prompt appears every boot-up. The system will not boot and deny access 

Setup with invalid password. The best way is to clear CMOS or try to reload BIOS Setup to boot up 

system. 

Boot To OS/2 

This item allows you to access the memory that is over 64 MB in OS/2 

System BIOS Cacheable 

Selecting enabled allows caching of the system BIOS ROM at F000h-FFFFFh, resulting in better system 

performance. However, if any program writes to this memory area, a system error may result. 

Shadow Memory (from address C000~DFFF, 16K per segment) 

Each of segments provides three options “Disabled”, “Enabled”, and “Cached” for faster adapter’s ROM execution. 

However this shadow function is Chipset oriented and dependent on system hardware feature. In general, C000 

and C800 will be allocated for VGA BIOS and set to Cached to get higher display performance by shadowing and 

caching feature. If user chooses Enabled setting, only BIOS shadow function is active. 

26


4.11 ADVANCED CHIPSET SETUP MENU 

This setup is very important to keep system stability. If you are not technical person, do not attempt to change any 

parameters. Best suggestion is to choose optimal default setting. 

Clock Spread Spectrum 

The Spread Spectrum function reduces the EMI generated by modulating the pulses so that the spikes of the 

pulses are reduced to flatter curves. 

CPU/DRAM Base Frequency 

This setting controls the clock speed of the CPU Host (FSB)/DDR SDRAM memory bus. 

CPU Multiple Factory 

Users adjust the ratio of processor. In normal situation, this item is unchangeable. 

Share Memory Size 

The system shares memory to the onboard VGA device. This setting controls the exact memory size shared to the 

VGA device 

Graphic Win Size 

This setting controls just how much system RAM can be allocated to AGP for video purposes. The aperture is a 

portion of the PCI memory address range dedicated to graphics memory address space. Host cycles that hit the 

aperture range are forwarded to the AGP without any translation. 

4.12 POWER MANAGEMENT SETUP MENU 

The “POWER MANAGEMENT SETUP” menu allows you to configure the system to save energy while operating 

in a manner consistent with your own style of computer usage. 

Power Switch Type 

Using ATX power supply, this item is used to handle soft power on/off regardless of time counting (generally 

speaking, it is 4 sec) if you set it to On/Off. You can easily power on/off system by pressing power button (toggle 

switch) directly. This feature is only available on system with ATX power control interface. If you use standard AT 

power supply, this option will be ignored. However choose the “Suspend” setting, and system will be forced into 

suspend mode when user turn it off, unless you can consecutively press the power button for more than 4 seconds 

to get in Soft off function. 

ACPI Aware O/S 

This item enables or disables ACPI (Advanced Configuration Power Interface) – a power management standard 

used by Windows 98 or later. 

Power Management 

If Advanced Power Management (APM) is installed in your system, selecting enabled gives better power 

management. 

Standby Time Out 

This option specifies the length of the period of system inactivity while the computer is in Full-On power state 

before the computer is placed in Standby mode. When this length of time expires, the computer enters Standby 

Timeout state. In Standby mode, some power use is curtailed. 

Suspend Time Out 

This option is the same as Standby Timeout function. These two features will be enabled to control CPU throttle 

running function. 

On Board Audio 

This option is On Board Audio activity monitoring. 

On Board Peripheral(s) 

This option is On Board Peripheral(s) activity monitoring. 

Resume on Modem Ring 

This item will be used to wake up system from remote ringing control under Soft Off condition. If you choose 

“Disabled” setting, the system will not resume by modem ring. 

Restore on AC/Power Loss 

This item specifies whether your system will reboot after a power failure or interrupt occurs. 

27


4.13 PCI/PLUG AND PLAY SETUP 

This section describes configuring the PCI bus system. PCI (Peripheral Component Interconnect) is a system that 

allows I/O devices to operate at speeds nearing CPU’s when communicating with their own special components. 

All of the options described in this section are important and technical, and it is strongly recommended that only 

experienced users could make any changes to the default settings. 

Plug and Play Aware O/S 

Set this option to “Yes” if the operating system installed in the computer is Plug and Play-aware. BIO only detects 

and enables PnP ISA adapter cards that are required for system boot. The Windows 95 operating system detects 

and enables all other PnP-aware adapter cards. Windows 95 is PnP-aware. Set this option to “No” if the operating 

system (such as DOS, OS/2, Windows 3.x) does not use PnP. 

Note: You must set this option correctly, or PnP-aware adapter cards installed in your computer will not 

be configured properly. 

Clear NVRAM 

This option is used to clear NVRAM and check or update ESCD (Extended System Configuration Data) data after 

system power-On. Setting this option to No, will not clear NVRAM and the operation of update ESCD is effective 

as a different ESCD data comparison. If you select the “Yes” setting, the BIOS will update ESCD each time during 

power on. 

PCI Latency Timer (PCI Clocks) 

PCI latency timers are a mechanism for PCI bus-mastering devices to share the PCI bus bandwidth. If the latency 

timer is set too low, PCI devices will interrupt their transfers unnecessarily often, poor performance. If it's set too 

high, devices that require frequent bus access may overflow their buffers, losing data. 

Primary Graphics Adapter 

This item specifies which VGA card is your primary graphics adapter. 

PCI VGA Palette Snoop 

When set to Enabled, multiple VGA devices operating on different buses can handle data from the CPU on each 

set of palette registers on every video device. 

NOTE: The setting must be set to Enabled if any ISA bus adapter in the system requires VGA palette 

snooping. 

Allocate IRQ to PCI VGA 

Select Enabled if your system has a VGA controller and you have one or more VGA devices connected. If you are 

not using your system’s VGA controller, select Disabled to free the IRQ resource. 

DMA Resources 

When system resources are controlled manually, assign each system DMA channel as one of the following types, 

depending on the device type using the interrupt: 

# Legacy ISA devices compliant with the original PC AT bus specification requiring a specific DMA channel. 

# PCI/ISA PnP devices compliant with the Plug-and-Play standard, whether designed for PCI or ISA bus 

architecture. 

IRQ Resources 

When system resources are controlled manually, assign each system interrupt as one of the following types, 

depending on the device type using the interrupt: 

# Legacy ISA devices compliant with the original PC AT bus specification requiring specific interrupts (such as 

IRQ4 for Serial Port 1). 

# PCI/ISA PnP devices compliant with the Plug-and-Play standard, whether designed for PCI or ISA bus 

architecture. 

28


4.14 PERIPHERAL SETUP 

This section describes I/O resources assignment for all of on-board peripheral devices. 

Audio Device 

Ethernet Device 

This item is active or inactive on board audio and Ethernet device. 

USB Function 

Select Enabled if your system contains a Universal Serial Bus (USB) controller and you have USB peripherals. 

USB KM/Mouse/FDD Legacy Support 

Set to Enabled if your need to use a USB keyboard/Mouse/FDD in the operating system that does not support or 

have any USB driver installed, such as DOS and SCO Unix. 

On Board FDC 

This item allows you to enable or disable the onboard floppy disk drive controller. Even when so equipped, if you 

added a higher performance controller, you will need to disable this feature. 

On Board Serial Port A 

On Board Serial Port B 

This item allows you to set the input/output address and interrupt request line (IRQ) for the onboard serial port 

(COM1/COM2) controller. 

Serial Port 2 Mode 

This item allows you to determine the Infrared (IR) function of the onboard input/output chip. 

On Board Parallel Port 

There are four optional settings for the on-board parallel port interface, and they are Parallel Port Mode, EPP 

Version, Parallel Port IRQ, and Parallel Port DMA Channel which allowing user to select I/O base address 

manually. 

Parallel Port Mode 

This option specifies the parallel port mode. ECP and EPP are both bi-directional data transfer schemes that 

adhere to the IEEE P1284 specifications. This Parallel Port Mode includes four options “Normal”, “EPP+ECP”, 

“EPP”, and “ECP”. 

# Normal: Uni-direction operation at normal speed. 

# EPP: The parallel port can be used with devices that adhere to the Enhanced Parallel Port (EPP) specification. 

EPP uses the existing parallel port signals to provide asymmetric bi-directional data transfer driven by the host 

device. 

# ECP: The parallel port can be used with devices that adhere to the Extended Capabilities Port (ECP) 

specification. ECP uses the DMA protocol to achieve data transfer rates up to 2.5 Megabits per second. ECP 

provides symmetric bi-directional communicational. 

Parallel Port IRQ 

This option is only valid if the Onboard Parallel Port option is not set to Disabled. This option sets the IRQ used 

by the parallel port. 

Parallel Port DMA Channel 

This option is only available if On Board Parallel Port is set to fixed I/O address and the setting of Parallel Port 

Mode is ECP. This option sets the DMA channel used by ECP-capable parallel port. 

On Board PCI IDE 

This option allows you enabled/disabled primary IDE or secondary IDE individually. 

29


4.15 HARDWARE MONITOR SETUP 

This setup detects current CPU surface temperature status by hardware monitor sensor. The status screen will 

show the followings: 

! CPU Temperature 

! System Temperature 

! CPU Fan Speed 

! System Fan Speed 

! V core 

! Vbat 

! VCC3 

! VCC 

! +12V 

! -12V 

4.16 BIOS POST CHECK POINT LIST 

AMIBIOS provides all IBM standard Power On Self Test (POST) routines as well as enhanced AMIBIOS POST 

routines. The POST routines support CPU internal diagnostics. The POST checkpoint codes are accessible via 

the Manufacturing Test Port (I/O port 80h). 

Whenever a recoverable error occurs during the POST, the system BIOS will display an error message and 

explain the problem in detail so that the problem can be corrected. 

During the POST, the BIOS signals a checkpoint by issuing one code to I/O address 80H. This code can be used 

to establish how far the BIOS has executed through the power-on sequence and what test is currently being 

performed. This is done to help troubleshoot the faulty system board. 

If the BIOS detect a terminal error condition, it will halt the POST process and attempt to display the checkpoint 

code written to port 80H. If the system hangs before the BIOS detects the terminal error, the value at port 80H will 

be the last test performed. In this case, the terminal error cannot be displayed on the screen. The following POST 

checkpoint codes are valid for all AMIBIOS products with a core BIOS date of 07/15/95 version 6.27 (Enhanced). 

Code 

D0 

D1 

D3 

D4 

D5 

D6 

D7 

D8 

D9 

Description 

NMI is disabled. CPU ID saved. INIT code checksum verification will be started. 

Initializing the DMA controller, performing the keyboard controller BAT test, starting 

memory refresh, and going to 4GB flat mode. 

To start memory sizing. 

Returning to real mode. Executing any OEM patches and setting the stack next. 

Passing control to the uncompressed code in shadow RAM at E000:0000h. The INIT 

code is copied to segment 0 and control will be transferred to segment 0. 

Control is in segment 0. Next, checking if was pressed and verifying the 

system BIOS checksum. If either was pressed or the system BIOS 

checksum is bad, next will go to checkpoint code E0h. Otherwise, going to checkpoint 

code D7h. 

To pass control to interface module. 

Main BIOS runtime code is to be decompressed. 

Passing control to the main system BIOS in shadow RAM next. 

Bootblock Recovery Codes — The bootblock recovery checkpoint hex codes are listed in order of execution: 

30


Code 

Description 

E0 

The onboard floppy controller if available is initialized. Next, beginning the base 

512KB memory test. 

E1 Initializing the interrupt vector table next. 

E2 Initializing the DMA and Interrupt controllers next. 

E6 Enabling the floppy drive controller and Timer IRQs. Enabling internal cache memory. 

ED Initializing the floppy drive. 

EE Start looking for a diskette in drive A: and read first sector of the diskette. 

EF A read error occurred while reading the floppy drive in drive A: . 

F0 Next, searching for the AMIBOOT.ROM file in the root directory. 

F1 The AMIBOOT.ROM file is not in the root directory. 

F2 

Next, reading and analyzing the floppy diskette FAT to find the clusters occupied by 

the AMIBOOT.ROM file. 

F3 Start reading AMIBOOT.ROM file, cluster by cluster. 

F4 The AMIBOOT.ROM file is not the correct size. 

F5 Next, disabling internal cache memory. 

FB Next, detecting the type of Flash ROM. 

FC Erasing the Flash ROM. 

FD Programming the Flash ROM 

FF Flash ROM programming was successful. Next, restarting the system BIOS. 

Uncompressed Initialization Codes — The following runtime checkpoint hex codes are listed in order of 

execution. These codes are uncompressed in F0000h shadow RAM. 

Code 

Description 

03 The NMI is disabled. Next, checking for a soft reset or a power on condition. 

05 The BIOS stack has been built. Next, disabling cache memory. 

06 Uncompressing the POST code next. 

07 Next, initializing the CPU and the CPU data area. 

08 The CMOS checksum calculation is done next. 

0B Next, performing any required initialization before the keyboard BAT command is issued. 

0C 

The keyboard controller input buffer is free. Next, issuing the BAT command to the 

keyboard controller. 

0E 

The keyboard controller BAT command result has been verified. Next, performing 

any necessary INIT after the K/B controller BAT command test. 

0F The keyboard command byte is written next. 

10 Next, issuing the pin 23 and 24 blocking and unblocking commands. 

11 Next, checking if the or keys were pressed during power on. 

12 

To initialize CMOS if the initialize CMOS RAM in every boot is set or the key is 

pressed. Going to disable DMA and Interrupt controllers. 

13 

The video display has been disabled. Port B has been initialized. Next, initializing the 

chipset. 

14 The 8254 timer test will begin next. 

19 The 8254 timer test is over. Starting the memory refresh test next. 

1A The memory refresh line is toggling. Checking the 15us on/off time next. 

Reading the 8042 input port and disabling the MEGAKEY Green PC feature next. Making 

23 the BIOS code segment writable and performing any necessary configuration before 

initializing the interrupt vectors. 

24 

The configuration or setup required before interrupt vector initialization has completed. 

Interrupt vector init is about to begin 

25 Interrupt vector initialization is done. Clearing the password if the POST DIAG switch is on. 

27 Any initialization before setting video mode to be done. 

28 Going for monochrome mode and color mode setting. 

2A Bus initialization system, static, output devices will be done next, if present. 

31


Code 

Description 

2B 

Passing control to the video ROM to perform any required configuration before the video 

ROM test. 

2C To look for optional video ROM and give control. 

2D 

The video ROM has returned control to BIOS POST. Performing any required processing 

after the video ROM had control. 

2E 

Completed podt-video ROM test processing. If the EGA/VGA controller is not found, 

performing the display memory read/write test next. 

2F EGA/VGA not found. Display memory R/W test about to begin. 

30 Display memory R/W test passed. Look for retrace checking next. 

31 

Display memory R/W test or retrace checking failed. To do alternate display retraces 

checking. 

32 

Alternate display memory R/W test passed. To look for the alternate display retrace 

checking. 

34 Video display checking is over. Setting the display mode next. 

37 The display mode is set. Displaying the power on message next. 

38 Initializing the bus input, IPL, and general devices next, if present. 

39 Displaying bus initialization error message. 

3A The new cursor position has been read and saved. Displaying the Hit message next. 

40 Preparing the descriptor tables next. 

42 Entering protected mode for the memory test next. 

43 Entered protected mode. Enabling interrupts for diagnostics mode next. 

44 

Interrupts enabled if the diagnostics switch is on. Initializing data to check memory 

wraparound at 0:0 next. 

45 

Data initialized. Checking for memory wraparound at 0:0 and finding the total system 

memory size next. 

46 

The memory wraparound test has completed. The memory size calculation has been done. 

Writing patterns to test memory next. 

47 

The memory pattern has been written to extended memory. Writing patterns to the base 640 

KB memory test. 

48 Patterns written in base memory. Determining the amount of memory below 1MB next. 

49 

The amount of memory below 1MB has been found and verified. Determining the amount of 

memory above 1MB memory next. 

The amount of memory above 1MB has been found and verified. Checking for a soft reset 

4B and clearing the memory below 1MB for the soft reset next. If this is a power on situation, 

going to checkpoint 4Eh next. 

4C 

The memory below 1MB has been cleared via a soft reset. Clearing the memory above 

1MB next. 

4D 

The memory above 1MB has been cleared via soft reset. Saving the memory size next. 

Going to checkpoint 52h next. 

4E 

The memory test started, but not as the result of a soft reset. Displaying the first 64KB 

memory size next. 

4F 

Memory size display started. This will be updated during memory test. Performing the 

sequential and random memory test next. 

50 

Memory testing/initialization below 1MB completed. Going to adjust displayed memory size 

for relocation and shadowing. 

51 

The memory size display was adjusted for relocation and shadowing. Testing the memory 

above 1MB next. 

52 

The memory above 1MB has been tested and initialized. Saving the memory size 

information next. 

53 The memory size information and the CPU registers are saved. Entering real mode next. 

54 

Shutdown was successful. The CPU is in real mode. Disabling the Gate A20 line, parity, and 

the NMI next. 

57 

The A20 address line, parity, and the NMI are disabled. Adjusting the memory size 

depending on relocation and shadowing next. 

32


Code 

Description 

58 

The memory size was adjusted for relocation and shadowing. Clearing the Hit 

message next. 

59 

The Hit message is cleared. The message is displayed. Staring the DMA 

and interrupt controller test next. 

60 The DMA page register test passed. To do DMA#1 base register test. 

62 DMA#1 base register test passed. To do DMA#2 base register test. 

65 DMA#2 base register test passed. To program DMA unit 1 and 2. 

66 DMA unit 1 and 2 programming over. To initialize 8259 interrupt controller. 

7F Extended NMI sources enabling is in progress. 

80 

The keyboard test has started. Clearing the output buffer and checking for stuck keys. 

Issuing the keyboard reset command next. 

81 

A keyboard reset error or stuck key was found. Issuing the keyboard Controller interface test 

command next. 

82 

The keyboard controller interface test completed. Writing the command byte and initializing 

the circular buffer next. 

83 Command byte written, Global data init done. To check for lock-key. 

84 

Locked key checking is over. Checking for a memory size mismatch with CMOS RAM data 

next. 

85 

The memory size check is done. Displaying a soft error and checking for a password or 

bypassing Setup next. 

86 Password checked. About to do programming before setup. 

87 

The programming before Setup has completed. Uncompressing the Setup code and 

executing the AMIBIOS Setup utility next. 

88 

Returned from CMOS setup program and screen is cleared. About to do programming after 

setup. 

89 

The programming after Setup has completed. Displaying the power on Screen message 

next. 

8B 

The first screen message has been displayed. The message is displayed. 

Performing the PS/2 mouse check and extended BIOS data area allocation check next. 

8C Programming the Setup options next. 

8D Going for hard disk controller reset. 

8F Hard disk controller reset done. Floppy setup to be done next. 

91 

The floppy drive controller has been configured. Configuring the hard disk drive controller 

next. 

95 Initializing the bus option ROMs from C800 next. 

96 Initializing before passing control to the adaptor ROM at C800. 

97 

Initialization before the C800 adaptor ROM gains control has completed. The adaptor ROM 

check is next. 

98 

The adaptor ROM had control and has now returned control to BIOS POST. Performing any 

required processing after the option ROM returned control. 

99 

Any initialization required after the option ROM test has completed. Configuring the timer 

data area and printer base address next. 

9A Return after setting timer and printer base address. Going to set the RS-232 base address. 

Returned after setting the RS-232 base address. Performing any required Initialization 

9B before the Coprocessor test next. 

9C 

9D 

9E 

A2 

A3 

A4 

A5 

Required initialization before the Coprocessor test is over. Initializing the Coprocessor next. 

Coprocessor initialized. Going to do any initialization after Coprocessor test. 

Initialization after the Coprocessor test is complete. Checking the extended Keyboard, 

keyboard ID, and Num Lock key next. Issuing the keyboard ID command next. 

Displaying any soft errors next. 

Soft error display complete. Going to set keyboard typematic rate. 

Keyboard typematic rate set. To program memory wait states. 

Memory wait state programming is over. Clearing the screen and enabling parity and the 

NMI next. 

33


Code 

Description 

A7 

NMI and parity enabled. Performing any initialization required before passing control to the 

adaptor ROM at E000 next. 

A8 

Initialization before passing control to the adaptor ROM at E000h completed. Passing 

control to the adaptor ROM at E000h next. 

A9 

Returned from adaptor ROM at E000h control. Performing any initialization required after 

the E000 option ROM had control next. 

AA 

Initialization after E000 option ROM control has completed. Displaying the system 

configuration next. 

AB Building the multiprocessor table, if necessary. 

AC Uncompressing the DMI data and initializing DMI POST next. 

B0 The system configuration is displayed. 

B1 Copying any code to specific areas. 

00 Code copying to specific areas is done. Passing control to INT 19 h boot loader next. 

JUMPER/CONNECTOR QUICK REFERENCE 

Jumper Function Page 

JP1 RTC CMOS Clear Jumper Setting 7 

JP2 Disk-On-Chip Memory address space selection 7 

JP3, JP4 Watch-Dog Timer Jumper Setting 8 

Connector Function Page 

J1 Front Panel interface 10 

J2, J7 Hard Disk (IDE) Connector 16 

J3 FDD Port connector 17 

J4 Power connector 10 

J5 ATX12V power connector 11 

J6 External audio signal interface 5 

J8 Parallel port connector 11 

J9 CPU Fan interface 13 

J10 Standard IrDA (Infrared) port 13 

J11 COM2 serial port 12 

J12 CD-ROM audio-in interface 12 

J13 ATX power button interface 12 

J14 External USB interface 12 

J15 COM1 Serial Interface 11 

J16 RJ-45 Ethernet connector 14 

J17 Proprietary PCI interface 15 

J18 CPU (mPGA478) socket 18 

J20 VGA interface 17 

J21 ATX power control interface 14 

J22 Proprietary PCI interface 15 

J23 System Fan interface 13 

J24 External Keyboard interface 14 

J25 M-system Disk-On-Chip socket 19 

J26 PS/2 keyboard & mouse connector 16 

Note: 

If the content in setting is inconsistent with the CD-ROM, please refer to the setting as the priority. 

34

AR-B1782 INDUSTRIAL GRADE CPU BOARD User’ s Guide

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