Acrosser AR-B1790 User Manual

AR-B1790

INDUSTRIAL GRADE

CPU BOARD
User’ s Guide

Edition: 1.03

Book Number: AR-B1790-03.1121

Table of Contents

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

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

0.2 WELCOME TO THE AR-B1790 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 STATIC ELECTRICITY PRECAUTIONS ........................................................................................................................................3

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

1.1 SPECIFICATIONS ....................................................................................................................................................................4

1.2 PACKING LIST................................................................................................................................................................................5

2. INSTALLATION........................................................................................................................................................... 6

2.1 AR-B1790'S LAYOUT .....................................................................................................................................................................6

2.2 CPU INSTALLATION ......................................................................................................................................................................8

2.3 CLEAR CMOS (JP6).......................................................................................................................................................................9

2.4 INSTALL DDR SDRAM SYSTEM MEMORY..................................................................................................................................9

3. CONNECTION........................................................................................................................................................... 10

3.1 IDE DISK DRIVE CONNECTOR (IDE1, IDE2) .......................................................................................................................10

3.2 SERIAL PORTS (COM2, COM3, COM4)................................................................................................................................11

3.3 COM3 RS-232/RS-485 SELECT (JP19, JP20).......................................................................................................................12

3.4 COM4 RS-232/RS-485 SELECT (JP21, JP22).......................................................................................................................13

3.5 PS2 KEYBOARD & MOUSE (PS/1)........................................................................................................................................13

3.6 USB CONNECTOR (USB1, USB2, USB3) ...................................................................................................................................14

3.7 FAN POWER CONNECTOR.........................................................................................................................................................14

3.8 DUAL ETHERNET PORT (PT3)....................................................................................................................................................14

3.9 PARALLEL & COM1 & VGA PORT (PT1) ....................................................................................................................................15

3.10 FLOPPY DRIVE CONNECTOR (FDD1) .....................................................................................................................................15

3.11 GPIO PORT (GPIO1)..................................................................................................................................................................16

3.12 ATX POWER CONNECTOR (PWR1).........................................................................................................................................16

3.13 POWER CONNECTOR (PWR2).................................................................................................................................................16

3.14 DUAL LVDS CONNECTOR (LVDS1, LVDS2)............................................................................................................................17

LVDS1 17

3.15 LVDS PANEL VOLTAGE SELECT (JP8)....................................................................................................................................18

3.16 CONTROL LVDS PANEL BACK-LIGHT (JP9)............................................................................................................................18

3.17 COM VOLTAGE SELECT (JP11, JP12, JP13)...........................................................................................................................18

3.18 MINI PCI SLOT (PCI1)................................................................................................................................................................18

3.19 PCI SLOT (PCI2).........................................................................................................................................................................18

3.20 IRDA HEADER (IR1)...................................................................................................................................................................18

3.21 CLEAR CMOS (JP6)...................................................................................................................................................................19

3.22 FRONT PANEL (JP7)..................................................................................................................................................................19

3.23 COMPACT FLASH (CF1)............................................................................................................................................................20

3.24 GAME/MINI PORT AND AUDIO CONNECT...............................................................................................................................20

3.25 CD-IN CONNECTOR (CD-IN).....................................................................................................................................................21

3.26 CPU SPEED SELECT (JP5).......................................................................................................................................................21

3.27 CF VOLTAGE SELECT (JP23)...................................................................................................................................................21

3.28 KB/MS VOLTAGE SELECT (JP2)...............................................................................................................................................21

4. WATCHDOG TIMER ................................................................................................................................................. 22

4.1 WATCHDOG TIMER SETTING ....................................................................................................................................................22

5. BIOS CONSOLE........................................................................................................................................................23

5.1 BIOS SETUP OVERVIEW.............................................................................................................................................................23

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

5.3 ADVANCED CMOS SETUP..........................................................................................................................................................25

5.4 ADVANCED CHIPSET SETUP.....................................................................................................................................................27

5.5 POWER MANAGEMENT..............................................................................................................................................................28

5.6 PCI/PLUG AND PLAY...................................................................................................................................................................29

5.7 PERIPHERAL SETUP...................................................................................................................................................................30

5.8 AUTO-DETECT HARD DISKS......................................................................................................................................................31

5.9 PASSWORD SETTING.................................................................................................................................................................31

5.10 LOAD DEFAULT SETTING.........................................................................................................................................................31

5.10.1 Auto Configuration with Optimal Setting.............................................................................. 32

5.10.2 Auto Configuration with Fail Safe Setting............................................................................ 32

5.11 BIOS EXIT...................................................................................................................................................................................32

5.12 BIOS UPDATE ............................................................................................................................................................................32

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

IO ADDRESS MAP..............................................................................................................................................................................33

APPENDIX B. INTERRUPT REQUEST (IRQ)............................................................................................................... 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, transcribe d, 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 merchantabilit y or fitness for any particular purpose. Furthermore,
Acrosser Technology reserves the right to make improvements to the products described in this manua l at any
times without notice. Such revisions will be posted on the Internet (WWW.ACROSSER.COM)
Possession, use, or copy of the software described in this publication is authorized onl y 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-B1790 CPU BOARD

This guide introduces the Acrosser AR-B1790 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-B1790. 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-B1790.
Check the packing list before you install and make sure the accessories are completely included.
AR-B1790 CD provides the newest information regarding the CPU card. Please refer to the files of the enclose d
utility CD. It contains the modification and hardware & software information, and adding the description or
modification of product function after manual printed.

0.4 RETURNING YOUR BOARD FOR SERVICE

If your board requires any services, contact the distributor or sales representative from whom you purchase d the
product for service information. If you need to ship your board to us for service, be sure it is packed in a protective
carton. We recommend that you keep the original shipping container for this purpose.
You can help assure efficient servicing for your product by following these guidelines:

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

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

3. A brief description of the problem occurred.

0.5 TECHNICAL SUPPORT AND USER COMMENTS

Users comments are always welcome as they assist us in improving the quality of our products and the readability
of our publications. They create a very important part of the input used for product enhancement and revision.
We may use and distribute any of the information you provide in any way appropriate without incurring any
obligation. You may, of course, continue to use the information you provide.
If you have any suggestions for improving particular sections or if you find any errors on it, please send your
comments to Acrosser Technology Co., Ltd. or your local sales representative and indicate the manual title and
book number.
Internet electronic mail to: [e-mail]

[e-mail]

as soon as possible.

2

0.6 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 comp onents. Although areas with humid climates are much
less prone to static build-up, it is always best to safeguar d against acci dents 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

Welcome to the AR-B1790 Embedded ATX Single Board Computer. The AR-B1790 board is Embedded ATX form
factor board, which comes equipped with high performanc e Intel® Pentium 4 Process or with the Intel® a dvanced
chipset the Intel® 845GV GMCH and ICH4 (Intel® 82801DB). This product is designed for the system
manufacturers, integrators, or VARs that want to provide all the performance, reliability , and quality at a reasonable
price.

In addition, the AR-B1790 provides on chip VGA. The VGA, which provides up to 1600x1200 resolution. The VGA
memory is share main memory.

AR-B1790 have two network controller on board, uses Intel® 82551QM and Intel® 82562ET LAN controller, a fully
integrated 10/100BASE-TX solution with high performance networking functions and Alert-on-LAN features.

1.1 SPECIFICATIONS

 CPU:

–Support Intel Pentium 4 Northwood（Socket 478）processor
–Support 533MHz and 400MHz FSB

–Support Intel Pentium 4 CPUs up to 2.8GHz

 DMA channels: 7
 Interrupt levels: 15
 Chipset:

–Intel® 845GV【Integrated 2D / 3D graphics accelerator and support PC2100（DDR266）technology】
–Intel ICH4 chipset（82801DB）I/O Controller

 RAM memory:
–Support two 184-pin DDR DIMM sockets

–Support PC200∕266 DDR SDRAM
–Support up to 2GB DRAM（Max）

 Display Interface: CRT－D-SUB 15-pin female connecotr
Dual LVDS(2 channels)－for 36/48 bit or 18/24 bit(single channel) LVDS LCD Panel

2x13x2.00mm pin-header connector
 On-board IDE Interface: Two IDE Controller on Intel ICH4 PCI chipset provides IDE HDD/CD-ROM（Ultra

DMA33/ATA66/ATA100）operation modes

 Floppy disk drive interface: 2.88 MB, 1.44MB, 1.2MB, 720KB, or 360KB floppy disk drive.
 C. F. : Supports one socket for Compact Flash Type II interface
 Series ports: –On-board D-SUB 9-pin male external port for COM1 with RS-232C/Touch Screen (rear I/O

panel) uses 2.0mm 3-pin JST connector
–On-board 2x5x2.54mm pin-header for COM2 connectors with RS-232C/IrDA（IrDA uses

1x5x2.54mm pin-header connector）

–On-board Two 2x5x2.54mm pin-header connectors for COM3 & COM4 with RS-232C/

RS-485

 Parallel Port: On-board one D-SUB 25-pin female external port for LPT1 , supports SPP/EPP/ECP modes

(rear I/O panel)

 IrDA port: Supports IrDA (HPSIR) and ASK (Amplitude Shift Keyed) IR port multiplexed on COM2
 USB port: –On-board two external port for 4 USB 2.0/1.1 ports (rear I/O panel)

–On-board one 2x5x2.54mm pin-header connectors for 2 additional USB 2.0/1.1 ports

 Audio: onboard AC’97 Codec, On-board 2-Channel AC97 provided by 82801DB Audio Jacks: Line-in,

Line-out, Mic-in (rear I/O panel)

 Watchdog timer: Software programmable 1~63sec.
 VGA Controller: Built in Intel 845GV Chipset
 Ethernet: –Integrated Intel Kinnereth 10/100Mbps provided by 82801DB South Bridge, with RJ-45 (90

degree) connector built-in LED (rear I/O panel)
–On-board intel 82551 with RJ-45 (90 degree) connector built-in LED (rear I/O panel)

 K/B & Mouse: On-board PS/2 Keyboard and Mouse 6-pin Mini-DIN external connector
 Power Connector: ATX & The Pentium 4 ATX power include another 2x2 pin+12V input connector
 Power Req. : +5V@ 2A and +12V@ 5A maximum, on-board ATX12 power input connector
 Operating Temperature: 0° ~ 60℃ (CPU needs Cooler)

4

1.2 PACKING LIST

In addition to this User's Manual, the AR-B1790 package includes the following items:

 The quick setup manual
 AR-B1790 Embedded ATX Single Board
 Software utility CD x 1
 FDD Cable x 1 (Optional)
 5.25” IDE HDD ATA 100Cable x 1(Optional)
 2.5” IDE HDD Cable x 1(Optional)
 Serial port Cable x 3(Optional)

Processor
VR

VGA

Connector

2 Intel DVO
Ports

IDE Primary

IDE Secondary

UDMA/100

USB PORT 1-6
USB2.0

USB

FirmWare Hub

Floppy

Game Port

BLOCK DIAGRAM

478-PIN P4 PROCESSOR

ADDR

ADDR

Keyboard

Mouse

CTRL

AGTL+ BUS

CTRL

GMCH

BROOKDALE-GV

ICH4

SIO1

Parallel

DATA

DATA

SIO2

Serial 1

AC'97 LINK

Serial 2

CK_408

DDR266
Modules

PCI CNTRL

PCI ADDR/DATA

Serial 3

PCI CONN 1

AC'97
CODEC

Serial 4

5

2. INSTALLATION

This chapter describes how to install the AR-B1790. At first, the layout of AR-B1790 is sho wn, and the unpacking
information that you should be careful is described. The jumpers and switches setting for the AR-B1790’s
configuration are as below.

2.1 AR-B1790'S LA YOUT

6

7

2.2 CPU INSTALLATION

This main board supports Intel Pentium 4/Celeron, Socket 478 series CPU. Please follow the step as below:

 Be careful of CPU orientation when you plug it into CPU socket.
 Pull up the CPU socket lever and up to 90°

 Locate Pin 1 in the socket and look for a black dot or cut edge on the CPU upper interface. Match Pin 1 and

cut edge, then insert into the CPU socket.

8

 Press down the CPU socket lever and finish CPU installation.

The Intel Pentium 4/Celeron processor requires a set of heatsink/fan to ensure proper cooling of processor. If
heatsink/fan have not been already bundled with your CPU, you must purchase the heatsink/fan separately and
have it installed. Plug the cable through the heatsink/fan in the CPU fan power connector located nearby. Note that
there are seceral types of CPU fan connector. Normally, if your main board supports the hard ware monitoring
function, a 3-pin fan power connector should allow your system to detect the CPU fan’s speed.

2.3 CLEAR CMOS (JP6)

If want to clear the CMOS Setup (for example when you forgot the password, please c lear the setu p and then s et
the password again.), you should close the pin 2-3 about 3 seconds, then open again, set back to normal
operation mode, close the pin 1-2.

1

3

JP6 FUNCTION

1-2 ON

2-3 ON Clear CMOS

Normal Operation

(Factory Preset)

2.4 INSTALL DDR SDRAM SYSTEM MEMORY

To install memory, insert DDR SDRAM memory module(s) in DIMM slot(s), Note that DDR SDRAM module are
directional and will not go in the DIMM slot unless properly oriented. After the module is fully inserted into the
DIMM slot, lift the chips of both sides of the DIMM slot to lock the module in place.

9

3. CONNECTION

This chapter describes how to connect peripherals, switches and indicators to the AR-B1790 board.

3.1 IDE DISK DRIVE CONNECTOR (IDE1, IDE2)

IDE1: Primary IDE Connector

•

A 40-pin header type connector (IDE1) 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, which is explained further in
chapter 5. 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
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 N.C
21 PDDREQ 22 GROUND
23 -PDIOW 24 GROUND
25 -PDIOR 26 GROUND
27 PIORDY 28 GROUND
29 -PDDACK 30 GROUND
31 IRQ14 32 N.C
33 PDA1 34 PD66/100
35 PDA0 36 PDA2
37 -PDCS1 38 -PDCS3
39 HLEDP 40 GROUND

10

IDE 2: Second IDE Connector

•

AR-B1790 also provides IDE interface 44-pin connector to connect with the hard disk device.

2

44

1

Pin Signal Pin Signal

1 -RESET 2 GROUND
3 DATA 7 4 DATA 8
5 DATA 6 6 DATA 9
7 DATA 5 8 DATA 10

9 DATA 4 10 DATA 11
11 DATA 3 12 DATA 12
13 DATA 2 14 DATA 13
15 DATA 1 16 DATA 14
17 DATA 0 18 DATA 15
19 GROUND 20 N.C
21 SDDREQ 22 GROUND
23 -SOIOW 24 GROUND
25 -SOIOR 26 GROUND
27 SIORDY 28 GROUND
29 -SDDACK 30 GROUND
31 IRQ15 32 GROUND
33 SDA1 34 SD66/100
35 SDA0 36 SDA2
37 -SDCS1 38 -SDCS3
39 HLEDS 40 GROUND
41 VCC 42 VCC
43 GROUND 44 N.C

3.2 SERIAL PORTS (COM2, COM3, COM4)

9

43

1

PIN Signal PIN Signal

1 /DCD 2 /DSR
3 RXD 4 /RTS
5 TXD 6 /CTS
7 /DTR 8 /RI
9 GND 10 COM VOLTAGE

10 2

11

3.3 COM3 RS-232/RS-485 SELECT (JP19, JP20)

JP19

JP20

JP19

JP20

JUMPER FUNCTION

1

3

5

1

2

3

RS-232

FACTORY PRESET

1

3

5

1

2

3

RS-485

• RS-485 Terminator Select (JP15)

JP15 (ON)

FACTORY PRESET

• RS-485 Header (JP18)

1
2
3

* When there is only one line the setting should be left off (please
take off the jumper), if multiple blocks are used on a single line this
should be set to “ON”(place a jumper) in order to properly terminate
the connection for better transmission

PIN Signal

1 N485+
2 N485­3 GND

12

PS/1

JP21

JP22

JP21

JP22

3.4 COM4 RS-232/RS-485 SELECT (JP21, JP22)

JUMPER FUNCTION

1

3

5

1

2

3

RS-485

1

3

5

1

2

3

RS-232

FACTORY PRESET

• RS-485 Terminator Select (JP16)

JP16 (ON)

FACTORY PRESET

* When there is only one line the setting should be left off (please
take off the jumper), if multiple blocks are used on a single line this
should be set to “ON”(place a jumper) in order to properly terminate
the connection for better transmission

• RS-485 Header (JP17)

1
2
3

PIN Signal

1 N485+
2 N485­3 GND

3.5 PS2 KEYBOARD & MOUSE (PS/1)

The AR-B1790 provides 6-PIN JST Header and 6-PIN MINI-DIN keyboard/mouse connector.

PS2 Mouse

PS2 KeyBoard

12
10

6
4

11
9

7

8

PIN Signal

1 KBDATA
2 NC
3 GND

5
3

2

1

4 VCC
5 KBCLK
6 NC
7 MSDATA
8 NC
9 GND
10 VCC
11 MSCLK
12 NC

13

3.6 USB CONNECTOR (USB1, USB2, USB3)

USB1&USB2

5 6 7 8 1.VCC

2.DATA0+

3.DATA0-

1 2 3 4

USB 3

2 10

1 9

4.GND

1.VCC 6.DATA3+

2.GND 7.GND

3.DATA2- 8.DATA3-

4.GND 9.GND

5.DATA2+ 10.VCC

5.VCC

6.DATA1+

7.DATA1-

8.GND

3.7 FAN POWER CONNECTOR

The AR-B1790 provides CPU cooling Fan connector. CPU connectors can supply 12V/500mA to the cooling fan.

3 2 1

FAN1 FOR CPU FAN
FAN2 FOR SYSTEM FAN
FAN3 FOR CASE FAN

3.8 DUAL ETHERNET PORT (PT3)

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

18

PIN Signal

1 GND
2 +12V
3 SENSE

Pin Signal Pin Signal

1 TX+ 5 Not Used
2 TX- 6 RX­3 RX+ 7 Not Used
4 Not Used 8 Not Used

14

3.9 PARALLEL & COM1 & VGA PORT (PT1)

AR-B1790 built-in a 9-pin standard COM port, a 15-pin VGA port and 1 LPT port. Device like printer can de
connected to LPT port . Mouse and modem etc can de connected to COM port. CRT monitor can be connected to
VGA port.

PRINT

VGA1 COM1

PRINT (25 pin Female)

COM1 VGA

Serial port VGA port
(9 pin Male) (15 pin Female)

Pin Signal Pin Signal

1 /DCD1 2 RXD1
3 TXD1 4 DTR1
5 GND 6 DSR1
7 /RTS1 8 CTS1
9 /RI1

Pin Signal Pin Signal

1 -STB 2 -AFD
3 PD0 4 -ERROR
5 PD1 6 -INIT
7 PD2 8 -SLIN
9 PD3 10 GND
11 PD4 12 GND
13 PD5 14 GND
15 PD6 16 GND
17 PD7 18 GND
19 -ACK 20 GND
21 BUSY 22 GND
23 PE 24 GND
25 SLCT 26 N.C

Pin Signal Pin Signal Pin Signal

1 RED 6 GND 11 N.C
2 GREEN 7 GND 12 SDA
3 BLUE 8 GND 13 HSYNC
4 N.C 9 VCC 14 VSYNC
5 GND 10 GND 15 SCL

3.10 FLOPPY DRIVE CONNECTOR (FDD1)

The AR-B1790 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

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

33

15

3.11 GPIO PORT (GPIO1)

PIN DEFINE PIN DEFINE

1 GPI0 2 GPO16
3 GPI1 4 GPO17
5 GPI7 6 GPO18
7 GPI12 8 GPO19
9 GPI13 10 GPO20
11 GPI33 12 GPO21
13 GPI34 14 GPO22
15 GPI35 16 GPO23
17 GPI36 18 GPO24
19 GPI37 20 GPO25
21 GPI38 22 GPO27
23 GPI39 24 GPO40
25 GPI_1 26 GPO41
27 GPI_2 28 GPO42
29 GPI_3 30 GPO43
31 GPI_4 32 GPO_1
33 VCC5V 34 GND

3.12 ATX POWER CONNECTOR (PWR1)

1

10

Pin Signal Pin Signal

1 3.3V 11 3.3V
2 3.3V 12 -12V
3 GND 13 GND
4 5V 14 PSON
5 GND 15 GND
6 5V 16 GND
7 GND 17 GND
8 PW-OK 18 -5V
9 5VSB 19 5V

10 12V 20 5V

11

3.13 POWER CONNECTOR (PWR2)

2

4

1

3

Pin Signal Pin Signal

1 GND 3 +12V
2 GND 4 +12V

20

16

3.14 DUAL LVDS CONNECTOR (LVDS1, LVDS2)

2 26

LVDS1

LVDS2

1 25

PIN Signal PIN Signal

1 TXOUT0- 14 GND
2 GND 15 TXCLK1+
3 TXOUT0+ 16 VTX12
4 GND 17 TXOUT3­5 TXOUT1- 18 VTX12
6 LVDSVCC 19 TXOUT3+
7 TXOUT1+ 20 GND
8 LVDSVCC 21 VTKBP
9 TXOUT2- 22 N.C
10 N.C 23 LVDSVCC
11 TXOUT2+ 24 N.C
12 GND 25 LVDSVCC
13 TXCLK1- 26 N.C

PIN Signal PIN Signal

1 TXOUT4- 14 GND
2 GND 15 TXCLK2+
3 TXOUT4+ 16 VTX12
4 GND 17 TXOUT7­5 TXOUT5- 18 VTX12
6 LVDSVCC 19 TXOUT7+
7 TXOUT5+ 20 GND
8 LVDSVCC 21 VTKBP
9 TXOUT6- 22 N.C
10 N.C 23 LVDSVCC
11 TXOUT6+ 24 N.C
12 GND 25 LVDSVCC
13 TXCLK2- 26 N.C

17

3.15 LVDS PANEL VOLTAGE SELECT (JP8)

1 2

6 5

JP8 VOLTAGE

1-3 2-4
ON
3-5 4-6

ON

3.16 CONTROL LVDS PANEL BACK-LIGHT (JP9)

PIN Signal

3 2 1

1 +12V
2 GND
3 EBLT

3.17 COM VOLTAGE SELECT (JP11, JP12, JP13)

1 2

6 5

﹡JP11 SELECT COM1 PIN 10 VOLTAGE ﹡

﹡JP12 SELECT COM2 PIN 10 VOLTAGE ﹡

﹡JP13 SELECT COM3 PIN 10 VOLTAGE ﹡

PIN Signal PIN Signal

1 COM VOLTAGE 2 +12V
3 COM VOLTAGE 4 +5V

5 COM VOLTAGE 6

3.18 MINI PCI SLOT (PCI1)

On board one mini PCI slot (PCI1)

3.19 PCI SLOT (PCI2)

On board one PCI slot (PCI2)

3.20 IRDA HEADER (IR1)

1

5

PIN Signal

1 VCC
2 NC
3 IRRX
4 GND
5 IRTX

+5V

+3.3V

(Factory Preset)

GND

(Factory Preset)

18

3.21 CLEAR CMOS (JP6)

1

3

JP6 FUNCTION

1-2 ON

2-3 ON Clear CMOS

3.22 FRONT PANEL (JP7)

2 22

1 21

PIN Signal PIN Signal

1 5VSUS 2 VCC
3 POWER BUTTON 4 POWER LED
5 N.C 6 N.C
7 GREEN BUTTON 8 5VSB

9 GND 10 SUSPEND LED
11 N.C 12 N.C
13 VCC 14 5V
15 PRIMARY HDD ACT LED 16 EXTERNAL SPEAKER
17 VCC 18 N.C
19 SECONDARY 20 RESET
21 N.C 22 GND

PIN FUNCTION

1-3 POWER BUTTON
7-9 GREEN BUTTON
13-15 PRIMARY HDD ACT LED
17-19 SECONDARY HDD ACT LED
2-4 POWER LED
8-10 SUSPEND LED
14-16 SPEAKER
20-22 RESET

Normal Operation

(Factory Preset)

19

3.23 COMPACT FLASH (CF1)

50 1

Compact Flash (CF1) and IDE 2 share the same channel. Since a Compact Flash card is installed in the socket, the
IDE 2 device will become unusable.

CF card & IDE2 device cannot use at the same time.

3.24 GAME/MINI PORT AND AUDIO CONNECT

The connector supports joystick, MINI Keyboard and other relate audio device.
After install onboard audio driver, you may connect speaker to Link-Out jack, microphone to MIC in jack, other
device like CD-ROM, and Walkman etc can also connect Link-In jack.

Link-In

Link-Out MIC

20

3.25 CD-IN CONNECTOR (CD-IN)

The connector is for CD-ROM audio connector

1

4

PIN Signal

1 CD_L
2 GND
3 GND
4 CD_R

3.26 CPU SPEED SELECT (JP5)

1

3

JP5 SPEED

1-2

2-3 100MHz

EMPTY 133MHz

CPU SELECT

(Factory Preset)

3.27 CF VOLTAGE SELECT (JP23)

JP23 VOLTAGE

1-2 +3.3V

2-3

+5V

Factory Preset

1
2
3

3.28 KB/MS VOLTAGE SELECT (JP2)

1
2
3

JP2 VOLTAGE

1-2 +5V

2-3

Factory Preset

+5V SB

21

4. WATCHDOG TIMER

This section describes the use of Watchdog Timer, including disable, enable, and trigger. AR-B1790 is equipped
with a programmable time-out period watchdog timer that occupies I/O port
enable the watchdog timer. Once you enable the watchdog timer, the program should trigger it every time before i t
times out. Watchdog Timer will generate a response (system or IRQ9) due to system fails to trigger or disable
watchdog timer before preset timer, times out.

443H. Users can use simple program to

Enable(D7)

Time Base

Time Factor

(D0-D5)

Write and

Trigger

Watchdog

Register

Counter and

Compartor

RESET

Watchdog Block Diagram

4.1 WATCHDOG TIMER SETTING

The watchdog timer is a circuit that maybe be used from your program software to detect crash or hang up.

The Watchdog timer is automatically disabled after reset. Once you enabled the watchdog t imer, your program
should trigger the watchdog timer every time before it times out. After you trigger the watchdog timer, the timer will
be set to zero and start to count again. If your program f ails to trigger the watchdog t imer before times out, it will
generate a reset pulse to reset the system or trigger the IRQ 9 signal in order to tell your system that the watchdog
time is out.

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

C:>debug

o 2e 87 ;Extended Functions Enable Register

o 2e 87 ;Extended Functions Enable Register

o 2e 07 ;EFIR=EFER (Extended Functions Index Register)
point to Logical Device Number Reg.

o 2f 08 ;EFDR=EFIR+1,select logical device 8

o 2e f6 ;select CRF6

o 2f 08 ;update CRF6 with value 08H ,(8sec reset)

o 2e 30 ;select CR30

o 2f 01 ;update CR30 with value 01H

q

22

5. BIOS CONSOLE

This chapter describes the AR-B1790 BIOS menu displays and explains how to perform common tasks needed to
get up and running, and presents detailed explanatio ns of the elements found in each of the BI OS menus. The
following topics are covered:

 BIOS Setup Overview

 Standard CMOS Setup

 Advanced CMOS Setup

 Advanced Chipset Setup

 Power Management

 PCI/Plug and Play

 Peripheral Setup

 Auto-Detect Hard Disks

 Password Setting

 Load Default Setting

 BIOS Exit

5.1 BIOS SETUP OVERVIEW

The BIOS is a program used to initialize and set up t he I/O system of the computer, which includes the ISA bus
and connected devices such as the video display, diskette drive, and the keyboard.
The BIOS provides a menu-based interface to the console subsystem. The console subsystem contains special
software, called firmware that interacts directly with the hardware components and facilitates interaction between
the system hardware and the operating system.
The BIOS default values ensure that the system will function at its normal capability. In the worst situation the user
may have corrupted the original settings set by the manufacturer.
After the computer is turned on, the BIOS will perform diagnostics on the system and display the size of the
memory that is being tested. Press the [Del] key to enter the BIOS Setup program, and then the main menu will
show on the screen.
The BIOS Setup main menu includes some options. Use the [Up/Down] arrow key to highlight the option that you
wish to modify, and then press the [Enter] key to select the option and configure the functions.

Setup Main Menu

23

CAUTION:

1. AR-B1790 BIOS the factory-default setting is used to the <Auto Configuration with Optimal Settings> Acrosser
recommends using the BIOS default setting, unless yo u are very familiar with the setting function, or you can
contact the technical support engineer.

2. If the BIOS settings are lost, the CMOS will detect the <Auto Configuration with Fail Sa fe Settings> to boot the
operation system, this option will reduce the performance of the system. Acrosser recommends choosing the
<Auto Configuration with Optimal Setting> in the main menu. This option gives best -case values that should
optimize system performance.

3. The BIOS settings are described in detail in this section.

5.2 STANDARD CMOS SETUP

The <Standard CMOS Setup> option allows you to record some basic system hardware configuration and set the
system clock and error handling. I f the CPU board is already installed in a working system, you will not need to
select this option anymore.

Standard CMOS Setup

Date & Time Setup

Highlight the <Date> field and then press the [Page Up] /[Page Down] or [+]/[-] keys to set the current date.
Follow the month, day and year format.
Highlight the <Time> field and then press the [Page Up] /[Page Down] or [+]/[-] keys to set the current date.
Follow the hour, minute and second format.
The user can bypass the date and time prompts by creating an AUTOEXEC.BAT file. For information on ho w to
create this file, please refer to the MS-DOS manual.

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.

24

Primary/Secondary Master/Slave

Press PgUp/<+> or PgDn/<-> to select Manual, None or Auto type. Note that the specifications of your drive must
match with the drive table. The hard disk will not work properly if you enter improper information for this category.

If your hard disk drive type is not matched or listed, you can use Manual to define your own drive type manually.
If you select Manual, related information is asked to be entered to the following items. Enter the information directly
from the keyboard. This information should be provided in the documentation from your hard disk vendor or the
system manufacturer.

Access Mode The settings are CHS, LBA, Large, Auto.
Capacity The formatted size of the storage device.
Cylinder Number of cylinders.
Head Number of heads.
Precomp Write precompensation.
Landing Zone Cylinder location of the landing zone.

Sector Number of sectors.

Boot Sector Virus Protection

This option protects the boot sector and partition table of your hard disk against accidental modifications. Any

attempt to write to them will cause the system t o halt and display a warning message. If this occurs, you can

either allow the operation to continue or use a bootable virus-free floppy disk to reboot and investigate your system.

The default setting is <

Installation of new operating systems requires that you disable this to prevent write errors.

Disabled>. This setting is recommended because it conflicts with new operating systems.

5.3 ADVANCED CMOS SETUP

The <Advanced CMOS Setup> option consists of configuration entries that allow you to improve your system

performance, or let you set up some system features according to your preference. Some entries here are

required by the CPU board’s design to remain in their default settings.

Advanced CMOS Setup

Quick Boot

This category speeds up Power On Self Test (POST) after you power on the computer. If it is set to Enabled,

BIOS will shorten or skip some check items during POST.

25

1st/2nd/3rd Boot Device

The items allow you to set the sequence of boot devices where BIOS attempts to load the disk operating system.
The settings are:

Floppy
LS120

HDD-0
CDROM
HDD-1
HDD-2

HDD-3
ZIP

LAN

Disabled

The system will boot from floppy drive.
The system will boot from LS-120 drive.
The system will boot from the first HDD.
The system will boot from the CD-ROM.
The system will boot from the second HDD.
The system will boot from the third HDD.
The system will boot from the fourth HDD.
The system will boot from ATAPI ZIP drive.
The system will boot from the Network drive.
Disable this sequence

Boot Other Device

Setting the option to Enabled allows the system to try to boot from other device if the system fails to boot from the
1st/2nd/3rd boot device.

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

S.M.A.R.T is abbreviation of Self-Monitoring Analysis and Reporting Technology. It is reliable and precautious

technology. When Hard Disk disorder, it prevents Hard Disk from the loss of data.

Boot Up Num-Lock

This item is used to activate the Num-Lock function upon system boot. If the setting is on, after a boot, the

Num-Lock light is lit, and user can use the number key.

Floppy Drive Swap

The option reverses the drive letter assignments of your floppy disk drives in t he Swap A, B setting, otherwise

leave on the setting of

feature. It is functionally the same as physically interchanging the connectors of the floppy disk drives. When

<

Enabled>, the BIOS swapped floppy drive assignments so that Drive A becomes Drive B, and Drive B becomes

Drive A under DOS.

Disabled (No Swap). This works separately from the BIOS Features floppy disk swap

Floppy Drive Seek

If the <Floppy Drive Seek> item is setting Enabled, the BIOS will seek the floppy <A> drive one time upon boot up.

PS/2 Mouse Support

The setting of Enabled allows the system t o detect a PS/2 mouse on boot up. If detected, IRQ12 will be used for

the PS/2 mouse. IRQ 12 will be reserved for expansion cards if a PS/2 mouse is not detected.

reserve IRQ12 for expansion cards and therefore the PS/2 mouse will not function.

Disabled will

Primary Display

The option is used to set the type of video display card installed in the system.

Password Check

This option enables password checking every time the comput er is powered on or every time the BIOS Set up is

executed. If

is chosen, the password prompt appears if the BIOS executed.

Always is chosen, a user password prompt appears every time the computer is t urned on. If Setup

Boot to OS/2

When using the OS/2 operating system, yo u need to Yes this opti on otherwise leave this on the s etup default of

No.

L1 Cache

This option specifies the caching algorithm used for L1 internal cache memory.

26

L2 Cache

This option specifies the caching algorithm used for L2 secondary (external) cache memory.

5.4 ADVANCED CHIPSET SETUP

This option controls the configuration of the boar d’s chipset. Control keys for this screen are the same as for t he

previous screen.

Advanced Chipset Setup

DRAM Frequency

PC-200 means the memory bus is running at 200MHz. PC-266 means the memory bus is running at 266MHz.

The Choice: 200Mhz, 266Mhz

Configure SDRAM Timing by SPD

SPD is the abbreviation Serial Presence Detect. SPD takes accord th e chip types, capacity, timing, voltage data.

The system can auto adjust memory according to the data to reach the best situation.

The Choice: Enabled, Disabled

CAS# Latency

This controls the timing delay (in clock cycles) before SDRAM starts a read command after receiving it. Settings:

1.5, 2, 2.5, 3 (clocks). 1.5 (clocks) increases the system performance the most while 3 (clocks) provides the most

stable performance.

RAS# to CAS# Delay

This field allows you to set the number of cycles for a timing delay

Precharge Delay

The field specifies the idle cycles before precharge an idle bank. Settings: 7, 6, 5 (clocks).

Hyper Threading Function

Enabling the functionality of Hyper-Threadi ng Technology f or your computer system requires ALL of the follo wing

platforms. Components:

• CPU - an IntelR PentiumR 4 Processor with HT Technology

• Chipset - an IntelR chipset that supports HT Technology

• BIOS - a BIOS that supports HT Technology and has it enabled

• OS - an operating system that includes optimizations for HT Technology

For more information on Hyper-Threading Technology, go to: www.intel.com/info/hyperthreading

.

27

Internal Graphics Mode Select

- Shares 512K/1MB/8MB of the system memory in DOS mode

- Uses Dynamic Video Memory Technology (DVMT) in Windows mode

USB Controller

This option can enable USB Port 0&1or Disabled USB function.

USB1.1 Device Legacy Support

These options are used to Enabled the USB function and it’s only useful in the DOS mode. The USB function sets

Enabled will occupy IRQ10.

Boot Display Device

Use the field to select the type of device you want to use as the display(s) of the system. Setting opti ons: CRT,

LF

P,CRT+LFP. The option EFP refers to the LCD display.

Flat Panel Type

800 X 600 LVDS
1024 X 768 LVDS
1280 X 1024 LVDS
1400 X 1050 LVDS
1600 X 1200 LVDS

5.5 POWER MANAGEMENT

This section is used to configure power management featur es. This <Power management Setup> option allows
you to reduce power consumption. This feature turns off the video display and shuts down the hard disk after a
period of inactivity.

Power Management

Keyboard PowerOn Function

This parameter allows you to use specific keys o n the keyboard to turn on the s ystem. This feature requires an
ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Any Key]
[Specific Key]

Specific Key For PowerOn

[Enter]

28

Mouse PowerOn Function

When set to [Enabled], this parameter allows yo u to use the PS/2 mouse to turn on the system. This feature
requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled]
[Left-button] [Right-button]

ACPI Standby State

This option will not be shown or not be available if you are using a CPU with the locked ratio.
Auto: BIOS will automatically select ACPI Suspend type

S1/POS
S3/SIR

：Set ACPI Suspend type to S1.

：Set ACPI Suspend type to S3

USB KB Wake-Up From S3

Set this field to Enabled to use the Wake-On-USB Keyboard function. This function allows you to use a USB
keyboard to wake up a system from the S3 (STR -Suspend To RAM) state.

Power Button Function

This feature sets the function of the po wer button. Settings are: Power Off The power butt on functions as normal
power off button.
the button is pressed for more than four seconds, the computer is turned off.

Suspend When you press the power button, the computer enters the suspend/sleep mode, but if

Resume On Ring

Set this field to Enabled to use the modem ring-on functio n. This will allo w your system to po wer-on to respon d to
calls coming from an external or internal modem.

Resume On LAN

If you are using a LAN card that supports the remote wake up f unctio n, set t his field t o Enabled. T he will all o w the
network to remotely wake up a Soft Power Down (Soft-Off) PC. However, if your system is in the Suspend mode,
you can wake up the system only through an IRQ or DMA interrupt.

5.6 PCI/PLUG AND PLAY

This section is used to configure PCI / Plug and Play features. The <PCI & PNP Setup> option configures the
PCI bus slots. All PCI bus slots on the system use INTA#, thus all installed PCI cards must be set to this value.

PCI / Plug And Play

29

Init. Graphics Adapter Priority

Internal VGA
PCI / Int-VGA

Clear NVRAM

This sets the operating mode of the boot block area of the BIOS FLASH ROM to allow programming in the Yes
setting.

5.7 PERIPHERAL SETUP

This section is used to configure peripheral features.

Peripheral Setup

OnBoard IDE

This option is to set up the operating mode of IDE controller. If the main board offers the enhanced I/O port, the
choice should be

<Enabled>.

OnBoard AC’97 Audio

This option allows you to select AC97 audio chip support Audio.
Auto

：BIOS will automatically select onboard AC97 audio.

Disable

：Disable this function

OnBoard FDC

This option enables the floppy drive controller on the AR-B1790.

Serial Port A/B/C/D

These items specify the base I/O port addresses of the onboard Serial Port A (COM A)/Serial Port B (COM B).
Selecting

3F8/IRQ

Auto allows AWARD to automatically determine the correct base I/O port address. Settings: Auto,

4, 2F8/IRQ3, 3E8/COM4, 2E8/COM3 and Disabled.

Serial Port B Mode

This item sets the operation mode for Serial Port B. Settings: Normal, 1.6 uS, 3/16 Baud and ASKIR.

Normal: RS-232C Serial Port
IrDA: IrDA-compliant Serial Infrared Port
ASKIR: Amplitude Shift Keyed Infrared Port

30

IR Duplex Mode

This setting controls the operating mode of IR transmission/reception. Setting options: Full, Half. Under Full
Duplex mode, synchronous, bi-directional transmission/reception is allowed. Under Half Duplex mode, only
asynchronous, i-directional transmission/reception is allowed.

IR Pin Select

Please consult your IR peripheral documentation to select t he correct setting of t he TxD and RxD signal s. Setting
options:

RxD2,TxD2, IR-Rx2Tx2.

OnBoard Parallel Port

This option enables the parallel port on the AR-B1790.

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 284 specifications.

Parallel Port DMA Channel

This option is only available if the setting for the parallel Port Mode option is ECP.

Onboard Midi Port

This item is used to specify the base I/O port address for the onboard Midi port. Settings: Disabled, 330, 300, 290.

Midi IRQ Select

This item is used to select the IRQ line for onboard Midi port.

5.8 AUTO-DETECT HARD DISKS

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

5.9 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. User can set either a Supervisor
password or a User password.

Select the appropriate password icon (Supervisor or User) 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 completes.
The next time the system boots, you are prompted for the password function is present and is enabled.

Enter new supervisor password:

5.10 LOAD DEFAULT SETTING

This section permits users to select a group of settings for all BIOS Setup options. You not only can use these
items to quickly set system configuration parameters, but also can choose a group of s ettings that have a better
chance of working when the system is having configuration related problems.

31

5.10.1 Auto Configuration with Optimal Setting

The user can load the optimal default settings for the BIOS. The Optimal defa ult settings are best-case values
that should optimize system performance. If CMOS RAM is corrupted, the optimal settings are loaded
automatically .

Load high performance setting (Y/N) ?

5.10.2 Auto Configuration with Fail Safe Setting

The user can load the Fail-Safe BIOS 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 t he most stable settings. Use this
option as a diagnostic aid if the system is behaving erratically.

Load failsafe settings (Y/N) ?

5.11 BIOS EXIT

This section is used to exit the BIOS main menu. After making your changes, you can either save them or exit t he
BIOS menu and without saving the new values.

5.12 BIOS UPDATE

The BIOS program instructions are contained within computer chips called FLASH ROMs that are located on your
system board. The chips can be electronically reprogrammed, allowing you to upgrade your BIOS firmware
without removing and installing chips.
The AR-B1790 provides the FLASH BIOS update functio n for you to easily to update to a newer BIOS version.
Please follow these operating steps to update to new BIOS:

Step 1:

Step 2:

Step 3:

Step 4:

Step 5:

Step 6:

Step 7:

Turn on your system and don’t detect the CONFIG.SYS and AUTOEXEC.BAT files.

Insert the FLASH BIOS diskette into the floppy disk drive.

In the MS-DOS mode, you can type the AMIFLASH program.

A:\>AMIFLASH

Press [ALT+F], The <File> box will show the following message, this message will be
highlighted.

BIOS Filename Loading … . After typing in the File nam e you must press<ENTER> or press
<ESC> to exit.

And then please enter the file name to the <Enter File Name> box. And the <Message> box
will show the following notice.

Are you sure to write the BIOS into flash ROM?

Press the <Enter> key to update the new BIOS.
Then the <Message> box will show the <Programming now …>.

When the BIOS update is successful, the message will show <Flash ROM Update Compl eted ­Pass>.

32

APPENDIX A. ADDRESS MAPPING

IO Address Map

I/O MAP ASSIGNMENT

000-01F DMA controller (Master)
020-021 Interrupt controller (Master)
022-023 Chipset controller registers I/O ports.
040-05F Timer control regist ers.
060-06F Keyboard interface controller
070-07F RTC ports & CMOS I/O ports
080-09F DMA register

0A0-0BF Interrupt controller (Slave)

0C0-0DF DMA controller (Slave)

0F0-0FF Math coprocessor
1F0-1F7 Primary IDE Channel

170-177 Secondary IDE Channel
2E8-2EF Serial port-4
2F8-2FF Serial port-2

378-37F Parallel port
3B0-3DF Graphics Controller
3E8-3EF Serial port-3
3F0-3F7 Floppy disk controller
3F8-3FF Serial port-1

Memory Map:

MEMORY MAP ASSIGNMENT

0000000-009FFFF System memory used by DOS and application
00A0000-00BFFFF
00C0000-00DFFFF Reserved for I/O device BIOS ROM or RAM buffer.

00E0000-00EFFFF

00F0000-00FFFFF

0100000-FFFFFFF

Display buffer memory for VGA/ EGA / CGA /

MONOCHROME adapter

Reserved for PCI device ROM

System extension memory

System BIOS ROM

33

APPENDIX B. INTERRUPT REQUEST (IRQ)

SETTING HARDWARE USING THE SETTING

00 System timer
01
02
03
04
05
06
07
08
09
10
11
12 PS/2 Compatible Mouse Port
13
14
15

Note:

When CF and IDE2 (44pin) simultaneously connect to the Device, the Bios Auto-Detecting time will
become longer (approximately 40 seconds). But when it enters into Operating System, two Devices will
operate normally.

Standard 101/102-Key or Microsoft Natural Keyboard
Programmable interrupt controller
Serial Port (COM2)
Serial Port (COM1)
IRQ Holder for PCI Steering
Floppy Disk Controller
Parallel Port (LPT1)
RTC clock
ACPI
Serial Port (COM4)
Serial Port (COM3)

Numeric data processor
Primary IDE controller
Secondary IDE controller

34