ASUS MEWB User Manual

®

MEW-B

Socket 370 Intel® 810 Motherboard

USER’S MANUAL

USER'S NOTICE

No part of this manual, including the products and software described in it, may be repro­duced, transmitted, transcribed, stored in a retrieval system, or translated into any language in
any form or by any means, except documentation kept by the purchaser for backup purposes,
without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).

ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED T O THE IMPLIED
WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PAR­TICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS,
EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDEN­TAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF
PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSI­NESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY
OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL
OR PRODUCT.

Product warranty or service will not be extended if: (1) the product is repaired, modified or
altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2)
the serial number of the product is defaced or missing.

Products and corporate names appearing in this manual may or may not be registered trade­marks or copyrights of their respective companies, and are used only for identification or
explanation and to the owners’ benefit, without intent to infringe.

• QuickStart and JumperFree are trademarks of ASUSTeK Computer Inc.

• Intel, LANDesk, and Pentium are registered trademarks of Intel Corporation.

• IBM and OS/2 are registered trademarks of International Business Machines.

• XGstudio and SoftSynthesizer are trademarks of Yamaha Corporation.

• Symbios is a registered trademark of Symbios Logic Corporation.

• Windows and MS-DOS are registered trademarks of Microsoft Corporation.

• Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.
The product name and revision number are both printed on the product itself. Manual revi-

sions are released for each product design represented by the digit before and after the period
of the manual revision number. Manual updates are represented by the third digit in the manual
revision number.

For previous or updated manuals, BIOS, drivers, or product release information, contact ASUS
at http://www.asus.com.tw or through any of the means indicated on the following page.

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FUR­NISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT
ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COM­MITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR
ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUD­ING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.

Copyright © 1999 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name: ASUS MEW-B
Manual Revision: 1.02 E444
Release Date: September 1999

2 ASUS MEW-B User’s Manual

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC. (Asia-Pacific)

Marketing

Address: 150 Li-Te Road, Peitou, Taipei, Taiwan 112
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

MB/Cards (tel): English: [phone]
Notebook (tel): English: [phone]
Server (tel): English: [phone]
Email: [e-mail]
Newsgroup: news2.asus.com.tw
WWW: www.asus.com.tw
FTP: ftp.asus.com.tw/pub/ASUS

ASUS COMPUTER INTERNATIONAL (America)

Marketing

Address: 6737 Mowry Avenue, Mowry Business Center, Building 2

Newark, CA 94560, USA
Fax: [phone]
Email: [e-mail]

Technical Support

Fax: [phone]
BBS: [phone]
Email: [e-mail]
WWW: www.asus.com
FTP: ftp.asus.com/Pub/ASUS

ASUS COMPUTER GmbH (Europe)

Marketing

Address: Harkortstr. 25, 40880 Ratingen, BRD, Germany
Telephone: MB/Other: [phone] Notebook: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

Hotline: MB/Other: [phone] Notebook: [phone]
Email: [e-mail]
WWW: www.asuscom.de
FTP: ftp.asuscom.de/pub/ASUSCOM

ASUS MEW-B User’s Manual 3

CONTENTS

1. INTRODUCTION ............................................................................. 7

1.1 How This Manual Is Organized .................................................. 7

1.2 Item Checklist ............................................................................. 7

2. FEATURES ........................................................................................ 8

2.1 The ASUS MEW-B Motherboard ............................................... 8

2.1.1 Specifications..................................................................... 8

2.1.2 Optional Components ........................................................ 9

2.1.3 Performance ..................................................................... 10

2.1.4 Intelligence....................................................................... 11

2.2 ASUS MEW-B Part Definitions ............................................... 12

2.3 ASUS MEW-B Part Locations ................................................. 13

3. HARDWARE SETUP ..................................................................... 14

3.1 Motherboard Layout ................................................................. 14

3.2 Layout Contents ........................................................................ 15

3.3 Hardware Setup Procedure ....................................................... 17

3.4 Motherboard Settings................................................................ 17

3.5 System Memory (DIMM) ......................................................... 24

3.5.1 General DIMM Notes ...................................................... 24

3.5.2 DIMM Installation ........................................................... 25

3.6 Central Processing Unit (CPU) ................................................. 26

3.7 Expansion Cards ....................................................................... 27

3.7.1 Expansion Card Installation Procedure............................ 27

3.7.2 Assigning IRQs for Expansion Cards .............................. 28

3.7.3 Assigning DMA Channels for ISA Cards ........................ 30

3.7.4 Audio Modem Riser (AMR) Slot .................................... 30

3.8 External Connectors.................................................................. 31

3.9 Power Connection Procedures .................................................. 43

4. BIOS SETUP..................................................................................... 44

4.1 Managing and Updating Your BIOS......................................... 44

4.1.1 Upon First Use of the Computer System ......................... 44

4.1.2 Updating BIOS Procedures.............................................. 45

4.2 BIOS Setup Program ................................................................ 47

4.2.1 BIOS Menu Bar ............................................................... 48

4.2.2 Legend Bar....................................................................... 48

4.3 Main Menu................................................................................ 50

4.3.1 Primary & Secondary Master/Slave ................................ 51

4.4 Advanced Menu ........................................................................ 56

4.4.1 Chip Configuration .......................................................... 58

4.4.2 I/O Device Configuration ................................................ 60

4.4.3 PCI Configuration............................................................ 62

4.4.4 Shadow Configuration ..................................................... 65

4 ASUS MEW-B User’s Manual

CONTENTS

4.5 Power Menu .............................................................................. 66

4.5.1 Power Up Control ............................................................ 68

4.5.2 Hardware Monitor............................................................ 70

4.6 Boot Menu ................................................................................ 71

4.7 Exit Menu ................................................................................. 73

5. SOFTWARE SETUP........................................................................ 75

5.1 ASUS Smart Motherboard Support CD.................................... 75

5.2 Operating Systems .................................................................... 78

5.3 Starting Windows For the First Time........................................ 78

5.4 LDCM Local Setup................................................................... 81

5.5 LDCM Administrator Setup...................................................... 83

5.6 ASUS PC Probe ........................................................................ 85

5.7 ASUS LiveUpdate .................................................................... 86

5.8 Driver ........................................................................................ 88

5.9 Other ......................................................................................... 90

5.10 Uninstalling Programs .............................................................. 98

6. SOFTWARE REFERENCE ............................................................ 99

6.1 Display Properties ..................................................................... 99

6.2 ASUS PC Probe ...................................................................... 103

6.3 ASUS LiveUpdate .................................................................. 108

6.4 Using Yamaha XGstudio Player ............................................. 109

6.5 Using Yamaha XGstudio Mixer .............................................. 110

6.6 Hardware Information............................................................. 112

7. APPENDIX...................................................................................... 1 13

7.1 PCI-L101 Fast Ethernet Card ................................................. 113

INDEX ................................................................................................. 115

ASUS MEW-B User’s Manual 5

FCC & DOC COMPLIANCE

Federal Communications Commission Statement

This device complies with FCC Rules Part 15. Operation is subject to the following
two conditions:

• This device may not cause harmful interference, and

• This device must accept any interference received, including interference that
may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installa­tion. This equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with manufacturer's instructions, may cause
harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interfer­ence by one or more of the following measures:

• Re-orient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment to an outlet on a circuit different from that to which the
receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

WARNING! Any changes or modifications to this product not expressly ap-

proved by the manufacturer could void any assurances of safety or performance
and could result in violation of Part 15 of the FCC Rules.

Reprinted from the Code of Federal Regulations #47, part 15.193, 1993. Washing­ton DC: Office of the Federal Register , National Archives and Records Administra­tion, U.S. Government Printing Office.

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus set out in the Radio Interference Regulations of the Canadian
Department of Communications.

This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

6 ASUS MEW-B User’s Manual

1. INTRODUCTION

1.1 How This Manual Is Organized

This manual is divided into the following sections:

1) INTRODUCTION Manual information and checklist

2) FEATURES Product information and specifications

3) HARDWARE SETUP Instructions on setting up the motherboard

4) BIOS SETUP Instructions on setting up the BIOS software

5) SOFTWARE SETUP Instructions on setting up the included software

6) SOFTWARE REFERENCE Reference material for the included software

7) APPENDIX Optional items and general reference

1.2 Item Checklist

Check that your package is complete. If you discover damaged or missing items,
please contact your retailer.

(1) ASUS Motherboard

Sections/Checklist

1. INTRODUCTION

(1) 40-pin ribbon cable for internal UltraDMA/33 IDE drives
(1) 40-pin 80-conductor ribbon cable for internal UltraDMA/66 or UltraDMA/

33 IDE drives

(1) Ribbon cable for (1) 5.25” and (2) 3.5” floppy disk drives
(1) Serial port connectors with bracket
(1) VGA connector with bracket
(1) Parallel & PS/2 Mouse connector set with bracket
(1) Connector set for audio input/output and game/MIDI port
(1) Bag of spare jumper caps
(1) Support CD with drivers and utilities
(1) This Motherboard User’s Manual

LCD connector with bracket (for LCD model only)
ASUS USB/MIR module (optional)
ASUS IrDA-compliant Infrared module (optional)
ASUS Consumer Infrared set (optional)
ASUS PCI-L101 Wake-On-LAN 10/100 ethernet card (optional)

ASUS MEW-B User’s Manual 7

2.1 The ASUS MEW-B Motherboard

The MEW-B motherboard from ASUS is carefully designed for the demanding PC
user who wants many smart features in a small package. So what’s so smart about
the ASUS MEW-B motherboard?

2.1.1 Specifications

• Latest Intel Socket 370 Processor Support! Supports Intel’s Celeron proces-

2. FEATURES

Specifications

• Latest Intel 810 Chipset! Features 100MHz FSB Intel 810 chipset (GMCH0 &

• Integrated Graphics! Controller supports 3D hyper pipelined architecture, par-

• ASUS Graphics Driver! You can gain about 12% performance over that of the

2. FEATURES

sor designed for Socket 370 and packaged in Plastic Pin Grid Array (PPGA).

ICH) and a 24-bit 230MHz RAMDAC graphics controller.

allel data processing and compression, precise pixel interpolation, full 2D hard­ware acceleration, and motion video acceleration.

standard graphics driver (2D high-end graphics W inMark) using ASUS’ custom
graphics driver. ASUS custom graphics driver also provides more features and
provides selection of higher refresh rates and resolutions.

• Smart Audio! Software Audio and Hardware AC’97 V2.1 Codec compliant,

Analog Device’s 3D sound circuitry , sample rate conversion from 7kHz to 48kHz.

• 3D Positional Audio! Brings new levels of realism to games with sounds being

positioned interactively around the user, making them truly part of the 3D vir­tual experience. Better music reproduction is possible with MIDI utilizing
Wavetable synthesis.

• Remote PC Management! Alert-on-LAN allows network administrators to re-

motely manage PCs by enabling PCs to send alerts through the network inter­face to the network administrator when there is hardware/operating system fail­ure or evidence of tampering.

• V ersatile Memory Support! DRAM controller supports asymmetrical address-

ing and three DIMM sockets support Intel PC100-compliant SDRAMs (16, 32,
64, 128, or 256MB) up to 512MB. (supports a maximum of 4 sides)

• JumperFree™ Mode! Allows processor settings and easy overclocking of fre-

quency and Vcore voltage all through BIOS setup when JumperFree™ mode is
enabled. Easy-to-use DIP switches instead of jumpers are included in case you
want to manually adjust the processor’s external frequency.

• Smart Slots! Provides four 32-bit PCI (rev 2.2) expansion slots and one 16-bit

ISA expansion slot (availability of three PCI with two ISA or four PCI with no
ISA is dependent on territory). PCI supports up to 133MB/s maximum through­put. Each PCI slot can support a Bus Master PCI card (such as SCSI or LAN
cards).

8 ASUS MEW-B User’s Manual

2. FEATURES

• Latest Low Pin Count Multi-I/O: Provides two high-speed UAR T compatible

serial ports and one parallel port with EPP and ECP capabilities.

• Integrated IDE! Controller supports UltraDMA/66 up to 66MB/s, UltraDMA/

33 up to 33MB/s, and PIO Mode 4 up to 17MB/s.

• Peripheral Wake-Up! Supports Wake-On-LAN, Wake-On-Ring, Keyboard

Wake-Up, BIOS Wake-Up, and wake-up by infrared remote control.

• AMR Slot! Audio Modem Riser slot supports a very affordable audio and/or

modem riser card.

• Around-the-Clock Intrusion Detection! Chassis intrusion circuitry can log chas-

sis panel open events into LDCM (available in near future for this motherboard).
The onboard battery supports detection even when normal power is removed
and through a new design, battery drain is even lower than the RTC used for
keeping time!

2. FEATURES

• Firmware Hub! Provides security and other latest power computing features.

• Monitoring for your PC’s Health! Provided ASUS PC Probe or Intel LDCM

allows PC health monitoring.

• Enhanced ACPI & Anti-Boot Virus Protection! Programmable BIOS (Flash

EEPROM), offering enhanced ACPI for W indows 98 compatibility , built-in firm­ware-based virus protection, and autodetection of most devices for virtually au­tomatic setup.

• Smart BIOS! 4Mbit firmware gives a new easy-to-use interface which provides

more control and protection over the motherboard. Provides Vcore and CPU/
SDRAM frequency adjustments, boot block write protection, and HD/SCSI/MO/
ZIP/CD/Floppy boot selection. Hardware random number generator supports new
security software for data protection and secured Internet transactions.

• Wired for Management (WfM) V2.0! Supports remote monitor, diagnosis,

and management (Alert-On-LAN) in network configuration.

2.1.2 Optional Components

The following onboard components are optional at the time of purchase:

Specifications-Optional

• PCI Audio! Provides Crystal CS4280 PCI audio chipset with 3D surround and

positioning capability. Includes complete online help to guide you through the
audio software.

• Space Savings! Digital Flat Panel (DFP) Interface gives a direct digital connec-
tion for connecting a digital flat panel (analog flat panel must be connected to
the VGA-out connector) to your PC. This interface transmits sharp, bright im­ages by eliminating digital-to-analog and analog-to-digital conversions, which
can accumulate noise and degrade image quality.

• No Messy Wires! Integrated Consumer IR and Serial IR supports an optional
remote control package for wireless interfacing with external peripherals, per­sonal gadgets, or an optional remote controller.

ASUS MEW-B User’s Manual 9

2. FEATURES

Performance

2. FEATURES

2.1.3 Performance

• UltraPerformance! Onboard IDE Bus Master controller with two connectors

that support four IDE devices in two channels. Supports UltraDMA/66, UltraDMA/
33 (IDE DMA Mode 2), PIO Modes 3 & 4, and supports Enhanced IDE devices,
such as Tape Backup, CD-ROM, CD-R/RW, and LS-120 drives.

• Dual Speeds! CPU frequency can operate at either 66MHz or 100MHz while

system memory operates at either 100MHz or 66MHz. (100MHz CPU with 66MHz
SDRAM setting not supported) This asynchronous design can optimize the VGA
performance under shared memory configuration. Of course 100MHz/100MHz
synchronous host/DRAM clock is recommended for maximum performance.

• Double or Quadruple the IDE T ransfer Speed! IDE transfers using UltraDMA/

33 Bus Master IDE can handle rates up to 33MB/s and up to 66MB/s using
UltraDMA/66 technology. The best of all is that these new technology is com­patible with existing ATA-2 IDE specifications so there is no need to upgrade
current IDE devices or cables.

• Concurrent PCI! Concurrent PCI allows multiple PCI transfers from PCI mas-

ter buses to memory to CPU.

• SDRAM Optimized Performance! ASUS smart series motherboards support the

new generation memory , Synchronous Dynamic Random Access Memory (SDRAM),
which increases the data transfer rate to 800MB/s max using PC100-compliant
SDRAM.

• ACPI Ready! ACPI (Advanced Configuration and Power Interface) is also imple-

mented on all ASUS smart series motherboards. ACPI provides more Energy
Saving Features for future operating systems (OS) supporting OS Direct Power
Management (OSPM) functionality . W ith these features implemented in the OS,
PCs can be ready around the clock, yet satisfy all the energy saving standards.
To fully utilize the benefits of ACPI, an ACPI-supported OS, such as Windows
98, must be used.

• Suspend and Go! Suspend-To-RAM (STR) provides maximum power savings

as an alternative to leaving the computer ON and QuickStart™ so that you do
not fall asleep waiting for system bootup. (STR requires OS support and does
not support ISA cards; ISA cards may fail to work coming out of STR mode.)

• New Compliancy! Both the BIOS and hardware levels of the motherboard meet

PC’99 compliancy . The new PC’99 requirements for systems and components are
based on the following high-level goals: Support for Plug and Play compatibility
and power management for configuring and managing all system components,
and 32-bit device drivers and installation procedures for W indows 95/98/NT . Color­coded connectors and descriptive icons make identification easy as required by
PC’99.

• Highest Audio Quality! AC’97 DAC/ADC built into the audio CODEC reduces

noise to improve audio quality and performance for a SNR (signal to noise ratio) o f
+90dB. These features greatly improve voice synthesis and recognition.

• Extreme Graphics! The integrated motion compensation allows for smooth

MPEG1 or MPEG2 video playback. Fast 3D graphics engine allows for an ex­citing gameplay experience.

10 ASUS MEW-B User’s Manual

2. FEATURES

2.1.4 Intelligence

• Fan Status Monitoring and Alarm! To prevent system overheat and system

damage, the CPU, power supply, and system fans can be monitored for RPM
and failure. All the fans are set for its normal RPM range and alarm thresholds.

• Temperature Monitoring and Alert! To prevent system overheat and system

damage, this motherboard supports Socket 370 processor thermal sensing and
auto-protection.

• Voltage Monitoring and Alert! System voltage levels are monitored to ensure

stable current to critical motherboard components. Voltage specifications are
more critical for future processors, so monitoring is necessary to ensure proper
system configuration and management.

• System Resources Alert! (Requires the future release of LDCM v6.0) Today’s

operating systems such as Windows 98, Windows NT, and OS/2, require much
more memory and hard drive space to present enormous user interfaces and run
large applications. The system resource monitor will warn the user before the
system resources are used up to prevent possible application crashes. Sugges­tions will give the user information on managing their limited resources more
efficiently.

Intelligence

2. FEATURES

• Dual Function Power Button! Through the BIOS, the power button can be

defined as the “Standby” (a.k.a. Suspend or Sleep) button or as the Soft-Off (see
ATX Power Switch Lead in 3.8 External Connectors for more information)
button. Regardless of the setting, pushing the power button for more than 4
seconds will enter the Soft-Off mode.

• Remote Ring On (requires modem)! This allows a computer to be turned on

remotely through an internal or external modem. With this benefit on-hand, users
can access any information from their computers from anywhere in the world!

• Message LED (requires ACPI OS suppor t)! Chassis LEDs now act as infor-

mation providers. Through the way a particular LED illuminates, the user can
determine the stage the computer is in. A simple glimpse provides useful infor­mation to the user.

• Peripheral Power Up! Keyboard and/or CIR power up can be enabled or dis-

abled through BIOS setup to allow the computer to be powered ON using your
keyboard and/or Consumer IR device.

ASUS MEW-B User’s Manual 11

2.2 ASUS MEW-B Part Definitions

The following are part descriptions for the motherboard parts shown on the next
page.

Part Definitions

2. FEATURES

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

2. FEATURES

AT Power Connector for connection to an AT power supply

1

ATX Power Connector for connection to an ATX power supply

2

Intel 810 (GMCH0+ICH) Integrated Graphics Chipset

3

Socket 370 for Intel Celeron 370 processors

4

Feature Setting DIP Switches

5

Primary and Secondary IDE Connectors

6

Floppy Disk Drive Connector

7

ASUS ASIC with Hardware Monitor

8

Four Mbit Firmware Hub (Programmable BIOS)

9

AC’97 V2.1 Audio Codec
Crystal PCI Audio (optional)
Intel I/O Controller Hub (ICH)
Super Multi-I/O
Wake-On-LAN Connector
W ake-On-Ring Connector
One ISA Slot
PCI to ISA Bridge
Four PCI Slots
Audio Modem Riser (AMR) Connector
Three DIMM Sockets
PS/2 Mouse, USB, IR Module Connector
Two Serial Port Headers
Parallel Connector
VGA Header
Keyboard Connectors

12 ASUS MEW-B User’s Manual

2. FEATURES

2.3 ASUS MEW-B Part Locations

25
24

23
22

21

20
19

6

754321

2. FEATURES

Part Locations

18

17

16

15 14 13 12

10

8

911

ASUS MEW-B User’s Manual 13

3. HARDWARE SETUP

3.1 Motherboard Layout

KB

COM2 COM1

Motherboard Layout

3. H/W SETUP

PCI to ISA

Bridge

P8

ATXPWR

VGA
Header

USB

Row

01

0
1

2
3

3
2

Audio Modem Riser

PCI3VSEL

PS2

P9

LCD Header

(DFP)

LCD

Encoder

Intel 810

Graphics &

Memory

Controller

Hub

PARALLEL

DIMM Socket 1 (64/72-bit, 168-pin module)

DIMM Socket 2 (64/72-bit, 168-pin module)
DIMM Socket 3 (64/72-bit, 168-pin module)

(AMR)

®

PCI Slot 1

MEW-B

PCI Slot 2

WOR

WOL_CON

PCI Slot 3

PCI Slot 4

ISA Slot

PWR_FAN

PLED2

Intel I/O
Controller
Hub (ICH)

ALERT

Super I/O

Socket 370

CR2032 3V
Lithium Cell

CMOS Power

SAFE_MD

NO_REBOOT

Audio Codec

Setting

Crystal

Audio

Chipset

Audio Header

MODEM

AUX

CPU_FAN

DIP Switches

Firmware

(FWH)

HPHONE

MIC2

VIDEO

JTPWR

DSW

CHA_FAN

4Mbit

Hub

Audio

Codec

CD1

VIO

Audio Setting

IDE1

ASUS

ASIC

with

CHASSIS

Hardware

Monitor

Clear CMOS

SIR
CIR

IDELED

PANEL

IDE2

(R200)

FLOPPY

JEN

SMB

(Grayed items are optional at the time of purchase.)

14 ASUS MEW-B User’s Manual

3. HARDWARE SETUP

3.2 Layout Contents

Motherboard Settings

1) JEN p.18 JumperFree™ Mode (Enable/Disable)

2) VIO p.18 I/O Voltage Setting (Normal/+3.6V)

3) AUDIO p.19 Onboard Audio Setting (Enable/Disable) (optional)

4) CODEC p.19 Onboard Audio Codec Setting (Enable/Disable)

5) PCI3VSEL p.20 PCI 3Volt Setting (3 Volt/3 VSB)

6) SAFE_MD p.20 Safe Mode (Normal/Safe Mode)

7) NO_REBOOT p.21 Automatic Timeout Reboot (Normal/No Reboot)

8) DSW p.22 CPU External Clock Frequency Setting

Expansion Slots

1) DIMM1, DIMM2, DIMM3 p.25 168-Pin DIMM Memory Support

2) Socket 370 p.26 Central Processing Unit (CPU) Socket

3) PCI1, PCI2, PCI3, PCI4 p.28 32-bit PCI Bus Expansion Slots

4) ISA p.29 16-bit ISA Bus Expansion Slot

5) AMR p.30 Audio Modem Riser Slot

Connectors

1) KB p.31 Keyboard Connector (6-pin female)

2) FLOPPY p.31 Floppy Disk Drive Connector (34-1 pins)

3) IDE1/IDE2 p.32 Primary/Secondary IDE Connectors (Two 40-1 pins)

4) IDELED p.32 IDE Activity LED Lead (2 pins)

5) PARALLEL p.33 Parallel Port Connector (25-pin female)

6) WOL_CON p.33 Wake-On-LAN Connector (3 pins)

7) WOR p.34 Wake-On-Ring Connector (2 pins)

8) CHA_, CPU_, PWR_FAN p.34 Chassis, CPU, Power Supply Fan Connectors (Three 3-pin)

9) MODEM, AUX, VIDEO, CD1 p.35 Internal Audio Connectors (Four 4-pins)

10) AUDIOCON p.35 Audio Jack Header (26-1 pins)

11) SIR/CIR p.36 Serial/Consumer IR Module Connectors (10-1 pins)

12) COM1/COM2 p.36 Serial Port Headers (Two 9-pin male)

13) SMB p.37 SMBus Connector (5-1 pins)

3. H/W SETUP

Layout Contents

14) DFP p.37 Digital LCD Header (20 pins) (optional)

15) VGA p.38 Monitor (VGA) Output Header (16-pin male)

16) MIC2 p.38 Internal Microphone Connector (3 pins)

17) HPHONE p.38 True-Level Line Out Header (3 pins)

18) CHASSIS p.39 Chassis Intrusion Connector (2 pins)

19) USBMIR p.39 USB / IR / PS/2 Mouse Module Header (18-1 pins)

20) ALERT p.40 Alert-On-LAN (3 pins)

ASUS MEW-B User’s Manual 15

21) PLED (PANEL) p.40 System Power LED Lead (3-1 pins)

22) KEYLOCK (PANEL) p.40 Keyboard Lock Switch Lead (2 pins)

23) SPEAKER (PANEL) p.40 System Warning Speaker Connector (4 pins)

24) RESET (PANEL) p.40 Reset Switch Lead (2 pins)

25) PWR SW. (PANEL) p.41 ATX Power / Soft-Off Switch Lead (2 pins)

26) SMI (PANEL) p.41 System Management Interrupt Switch Lead (2 pins)

27) TB LED (PANEL) p.41 System Message LED (2 pins)

28) ATXPWR p.41 ATX Power Supply Connector (20 pins)

29) PS2 p.42 AT Power Supply Connector (12 pins)

30) JTPWR p.42 Thermal Sensor Connector (2 pins)

Layout Contents

3. H/W SETUP

3. HARDWARE SETUP

16 ASUS MEW-B User’s Manual

3. HARDWARE SETUP

3.3 Hardware Setup Procedure

Before using your computer, you must complete the following steps:

• Check Motherboard Settings

• Install Memory Modules

• Install the Central Processing Unit (CPU)

• Install Expansion Cards

• Connect Ribbon Cables, Panel Wires, and Power Supply

3.4 Motherboard Settings

This section explains in detail how to change your motherboard’s function settings
through the use of switches and/or jumpers.

WARNING! Computer motherboards and expansion cards contain very delicate

Integrated Circuit (IC) chips. To protect them against damage from static electric­ity, you should follow some precautions whenever you work on your computer.

1. Unplug your computer when working on the inside.

2. Use a grounded wrist strap before handling computer components. If you do
not have one, touch both of your hands to a safely grounded object or to a metal
object, such as the power supply case.

3. Hold components by the edges and try not to touch the IC chips, leads or con­nectors, or other components.

4. Place components on a grounded antistatic pad or on the bag that came with the
component whenever the components are separated from the system.

3. H/W SETUP

Motherboard Settings

ASUS MEW-B User’s Manual 17

3. HARDWARE SETUP

1) JumperFree™ Mode Setting (JEN)

This jumper allows you to enable or disable the JumperFree™ mode. The
JumperFree™ mode allows processor settings to be made through the BIOS
setup (see 4.4 Advanced Menu).

NOTE: Set all DIP switches (DSW) to OFF for JumperFree™ mode.
Setting JEN

Disable (Jumper) [1-2] (default)
Enable (JumperFree) [2-3]

0 1

Motherboard Settings

3. H/W SETUP

MEW-B JumperFree™ Mode Setting

2) I/O Voltage Setting (VIO)

This jumper allows you to select the voltage supplied to the DRAM, chipset,
PCI, and the CPU’s I/O buffer. The default voltage should be used unless pro-
cessor overclocking requires a higher voltage.

Setting VIO

Normal [1-2] (default)

3.66V [2-3]

®

MEW-B

Jumper

Mode

3
2
1

JEN

JumperFree

Mode

3
2
1

OFF

ON

DSW

12345

VIO

0 1

123

3.66 Volt

®

MEW-B

123
Normal

(Default)

MEW-B I/O Voltage Setting

WARNING! Using a higher voltage may help when overclocking but may result

in the shortening of your computer component’s life. It is strongly recommended
that you leave this setting on its default.

18 ASUS MEW-B User’s Manual

3. HARDWARE SETUP

3) Onboard Audio Setting (AUDIO)

(only with onboard PCI audio)

The onboard 32-bit PCI audio may be enabled or disabled using this jumper.
Disable the onboard audio if you are using an ISA or PCI audio card on any of
the expansion slots or a primary AMR on the AMR slot (see 3.7.4 Audio Modem

Riser (AMR) Slot). If using an ISA or PCI audio expansion card, Onboard
AC’97 Audio Controller in 4.4.2 I/O Device Configuration must also be dis-

abled.

Setting AUDIO

Enable [1-2] (default)
Disable [2-3]

0 1

AUDIO

®

MEW-B

123
Enable

(Default)

123

Disable

MEW-B Onboard Audio Setting

4) Onboard Audio Codec Setting (CODEC)

The onboard audio CODEC may be enabled or disabled using all of these jump­ers. Disable the onboard audio CODEC if you are using an ISA or PCI audio
card on any of the expansion slots or a primary AMR on the AMR slot (see AMR
Slot later in this section). If using an ISA or PCI audio expansion card, On-
board AC’97 Audio Controller in 4.4.2 I/O Device Configuration must also
be disabled.

Setting CODEC

Enable [1-2] [1-2] [1-2] [1-2]
Disable [2-3] [2-3] [2-3] [2-3]

0 1

®

MEW-B

MEW-B Audio Codec Setting

123

Enable

(Default)

CODEC

AUD_EN1
AUD_EN2
ADN#
SPK

123

AUD_EN1
AUD_EN2
ADN#
SPK

Disable

3. H/W SETUP

Motherboard Settings

ASUS MEW-B User’s Manual 19

3. HARDWARE SETUP

5) PCI 3Volt Setting (PCI3VSEL)

This jumper allows you to select the voltage supplied to PCI devices. If you
have PCI devices that require auxiliary power, set this jumper to 3 VSB.

Setting PCI3VSEL

3 Volt [1-2] (default)
3 VSB [2-3]

0 1

PCI3VSEL

®

MEW-B

123

123

Motherboard Settings

3. H/W SETUP

MEW-B PCI 3Volt Selection

6) Safe Mode Setting (SAFE_MD)

Usually socket 370 processors have locked frequency multiples. In this case,
there is no way to exceed the specified multiple whether through motherboard
settings or BIOS setup. With unlocked socket 370 processors, exceeding the
specified multiple is possible through BIOS setup. Exceeding the specified mul­tiple may result in hanging during bootup. If this occurs, enable Safe Mode to
force a multiple of 2 in order to enter BIOS setup to correct the problem.

Setting SAFE_MD

Normal [1-2] (default)
Safe Mode [2-3]

3 Volt

3 VSB

0 1

®

MEW-B

SAFE_MD

123

Normal

(Default)

123

Safe Mode

MEW-B Safe Mode Setting

20 ASUS MEW-B User’s Manual

3. HARDWARE SETUP

7) Automatic Timeout Reboot Setting (NO_REBOOT)

The motherboard is set so that when the BIOS detects a hang (timeout) during
bootup, the motherboard will automatically reboot. If rebooting is repeating in­effectively, set this jumper to No Reboot to disable auto-reboot.

Setting NO_REBOOT

Normal [1-2] (default)
No Reboot [2-3]

0 1

®

MEW-B

MEW-B Reboot Setting

NO_REBOOT

123

Normal

(Default)

No Reboot

123

3. H/W SETUP

Motherboard Settings

ASUS MEW-B User’s Manual 21

8) CPU External Frequency Setting (DSW)

This option tells the clock generator what frequency to send to the CPU, DRAM,
and the PCI bus. This allows the selection of the CPU’s External frequency . The
CPU External Frequency multiplied by the Frequency Multiple equals the CPU’s
Internal frequency (the advertised CPU speed). NOTE: Y ou may set the memory
speed independently from the CPU External Frequency. Depending on your
memory type PC66 (66MHz) or PC100 (100MHz), select the appropriate
“SDRAM” speed along with the appropriate “CPU” speed.
IMPORTANT: Only 66MHz CPU and 100MHz SDRAM should be used on
this motherboard with current 66MHz Socket 370 processors. Other settings are
for experienced users only. When JumperFree mode is enabled, use BIOS setup
in place of these switches (see CPU Speed in 4.4 Advanced Menu). Only se­lected switches are illustrated, see the next page for a complete frequency listing.
NOTE: In JumperFree mode, all dip switches (DSW) must be set to OFF.

Motherboard Settings

3. H/W SETUP

3. HARDWARE SETUP

DSW

ON

83MHz

ON

ON

12345

12345

12345

0 1

®

MEW-B

MEW-B CPU External Clock
Frequency Selection

CPU
SDRAM

CPU
SDRAM

CPU
SDRAM

→
→

→
→

→
→

ON

66MHz

100MHz

ON

100MHz
150MHz

ON

124MHz
124MHz

12345

12345

12345

ON

75MHz

112MHz

ON

100MHz
100MHz

ON

133MHz
133MHz

12345

124MHz

12345

112MHz
112MHz

12345

150MHz
150MHz

(JumperFree Mode)

NOTE: Frequency Multiple settings are not available here because usually
Socket 370 processors have locked Frequency Multiples. If your Socket 370
processor does not have a locked Frequency Multiple, you must use CPU
Core:Bus Freq. Multiple in 4.4 Advanced Menu of the BIOS setup to set the
Frequency Multiple. If the Frequency Multiple is locked, setting the Frequency
Multiple in BIOS setup will have no effect.

WARNING! CPU frequencies above 66MHz exceed the specifications for cur-

rent Celeron processors and are not guaranteed to be stable. Premature wearing of
the processor may result when overclocking. Be sure that the DIMM you use can
handle the specified SDRAM MHz or else bootup will not be possible.

22 ASUS MEW-B User’s Manual

3. HARDWARE SETUP

External Frequency Table for Intel Celeron (PPGA) Processors

The following table is for use by experienced motherboard installers only . Overclock­ing can result in system instability or even shortening the life of the processor. Bold
settings are also shown on the previous page.

CPU SDRAM PCI Frequency Selection Switches
(MHz) (MHz) (MHz) 1 2 3 4 5

67.81 101.71 33.90 [ON] [ON] [ON] [ON] [ON]

70.00 105.00 35.00 [ON] [OFF] [ON] [ON] [ON]

72.01 108.01 36.00 [ON] [ON] [OFF] [ON] [ON]

66.67 100.00 33.33 [ON] [OFF] [OFF] [ON] [ON]

73.01 109.51 36.50 [ON] [ON] [ON] [OFF] [ON]

75.00 112.50 37.50 [ON] [OFF] [ON] [OFF] [ON]

77.00 115.50 38.50 [ON] [ON] [OFF] [OFF] [ON]

78.01 117.01 39.00 [ON] [OFF] [OFF] [OFF] [ON]

80.00 120.00 40.00 [ON] [ON] [ON] [ON] [OFF]

83.00 124.51 41.50 [ON] [OFF] [ON] [ON] [OFF]

84.49 126.74 42.25 [ON] [ON] [OFF] [ON] [OFF]

100.00 150.00 50.00 [ON] [OFF] [OFF] [ON] [OFF]

86.08 129.12 43.04 [ON] [ON] [ON] [OFF] [OFF]

88.00 132.00 44.00 [ON] [OFF] [ON] [OFF] [OFF]

90.00 135.00 45.00 [ON] [ON] [OFF] [OFF] [OFF]

95.00 142.50 47.50 [ON] [OFF] [OFF] [OFF] [OFF]

49.90 49.90 16.63 [OFF] [ON] [ON] [ON] [ON]

100.00 100.00 33.33 [OFF] [OFF] [ON] [ON] [ON]

74.85 74.85 24.95 [OFF] [ON] [OFF] [ON] [ON]

66.58 66.58 22.19 [OFF] [OFF] [OFF] [ON] [ON]

82.84 82.84 27.61 [OFF] [ON] [ON] [OFF] [ON]

89.81 89.81 29.93 [OFF] [OFF] [ON] [OFF] [ON]

94.80 94.80 31.60 [OFF] [ON] [OFF] [OFF] [ON]

100.50 100.50 33.50 [OFF] [OFF] [OFF] [OFF] [ON]

104.78 104.78 34.93 [OFF] [ON] [ON] [ON] [OFF]

111.77 111.77 37.26 [OFF] [OFF] [ON] [ON] [OFF]

114.77 114.77 38.26 [OFF] [ON] [OFF] [ON] [OFF]

100.00 100.00 33.33 [OFF] [OFF] [OFF] [ON] [OFF]

123.75 123.75 41.25 [OFF] [ON] [ON] [OFF] [OFF]

132.74 132.74 44.25 [OFF] [OFF] [ON] [OFF] [OFF]

139.75 139.75 46.58 [OFF] [ON] [OFF] [OFF] [OFF]

149.69 149.69 49.90 [OFF] [OFF] [OFF] [OFF] [OFF]

3. H/W SETUP

Motherboard Settings

NOTE: The PCI clock is equal to 1/3 the speed of the SDRAM. PCI’s specifica-
tion allows for up to 33MHz, therefore using PC100-compliant DIMM and set­ting SDRAM to about 100MHz is recommended. For updated processor set­tings, please visit ASUS’ web site (see ASUS CONTACT INFORMATION)

ASUS MEW-B User’s Manual 23

3.5 System Memory (DIMM)

NOTE: No hardware or BIOS setup is required after adding or removing memory.
This motherboard uses only Dual Inline Memory Modules (DIMMs). Sockets are

available for 3.3Volt (power level) unbuffered Synchronous Dynamic Random Ac-
cess Memory (SDRAM) of 16, 32, 64, 128MB, or 256MB.

This chipset does not support ECC. However, ECC memory modules may still be
used, but the ECC function will not be available.

Memory speed setup is recommended through SDRAM Configuration in 4.4.1

Chip Configuration.
Install memory in any combination as follows:

Location 168-pin DIMM SDRAM Total Memory

DIMM1 Single-Sided

System Memory

3. H/W SETUP

(Rows 0&1) Double-Sided x1
DIMM2 Single-Sided (must be occupied before DIMM3)

(Rows 2&3) Double-Sided (DIMM3 must be empty) x1

3. HARDWARE SETUP

DIMM3 Single-Sided (DIMM2 must be single-sided)
(Rows 3&2) (Double-Sided DIMM cannot be used here!) x1

(must be same or half DIMM2 memory size)

Total System Memory (Max 512MB) =

NOTE: At the time this User’s Manual was written, 256MB DIMMs are only avail-

able as Double-Sided registered memory. Using 2x2x2 SDRAM can greatly improve
the onboard graphics’ performance.

3.5.1 General DIMM Notes

• When this motherboard operates at 100MHz, PC100-compliant modules must
be used because of the strict timing issues involved under this speed. If your
DIMMs are not PC100-compliant, set the SDRAM bus frequency (FS) to 66MHz
RAM but onboard graphics performance and PCI expansion cards will suffer
tremendously.

• ASUS motherboards support SPD (Serial Presence Detect) DIMMs. This is the
memory of choice for best performance vs. stability.

• SDRAM chips are generally thinner with higher pin density than EDO (Ex­tended Data Output) chips.

• BIOS shows SDRAM memory on bootup screen.

• Single-sided DIMMs come in 16, 32, 64,128MB; double-sided come in 32, 64,

128, 256MB.

24 ASUS MEW-B User’s Manual

3. HARDWARE SETUP

3.5.2 DIMM Installation

Insert the module(s) as shown. Because the number of pins are different on either
side of the breaks, the module will only fit in the orientation shown. DIMMs are
longer and have different pin contact on each side and therefore have a higher pin
density. SIMMs have the same pin contact on both sides.

0 1

®

MEW-B

20 Pins 60 Pins 88 Pins

Lock

MEW-B 168-Pin DIMM Sockets

The DIMMs must be 3.3V Unbuffered for this motherboard. T o determine the DIMM
type, check the notches on the DIMMs (see figure below).

168-Pin DIMM Notch Key Definitions (3.3V)

DRAM Key Position

RFU

Buffered

Unbuffered

Voltage Key Position

5.0V

Reserved

3.3V

3. H/W SETUP

System Memory

The notches on the DIMM will shift between left, center , or right to identify the type
and also to prevent the wrong type from being inserted into the DIMM slot on the
motherboard. You must ask your retailer the correct DIMM type before purchasing.
This motherboard supports four clock signals per DIMM slot.

ASUS MEW-B User’s Manual 25

3. H/W SETUP

CPU

3. HARDWARE SETUP

3.6 Central Processing Unit (CPU)

The motherboard provides a ZIF Socket 370. The CPU that came with the mother­board should have a fan attached to it to prevent overheating. If this is not the case,
then purchase a fan before you turn on your system.

WARNING! Be sure that there is sufficient air circulation across the processor’s

heatsink by regularly checking that your CPU fan is working. W ithout sufficient
circulation, the processor could overheat and damage both the processor and the
motherboard. You may install an auxiliary fan, if necessary.

To install a CPU, first turn off your system and remove its cover. Locate the ZIF
socket and open it by first pulling the lever sideways away from the socket then
upwards to a 90-degree angle. Insert the CPU with the correct orientation as shown.
The notched corner should point towards the end of the lever . Because the CPU has
a corner pin for two of the four corners, the CPU will only fit in the orientation as
shown. The picture is for reference only; you should have a CPU fan that covers the
face of the CPU. With the added weight of the CPU fan, no force is required to
insert the CPU. Once completely inserted, close the socket’s lever while holding
down the CPU.

NOTE: Do not forget to set the correct Bus Frequency and Multiple (frequency
multiple setting is available only on unlocked processors) for your Socket 370 pro­cessor or else boot-up may not be possible. Socket 370 processors provide internal
thermal sensing so that a socket mounted thermal resistor is not needed.

CAUTION! Be careful not to scrape the motherboard when mounting a clamp-

style processor fan or else damage may occur to the motherboard.

Notch

0 1

®

MEW-B

Socket 370 CPU (Top) Socket 370 CPU (Bottom)

MEW-B Socket 370

26 ASUS MEW-B User’s Manual

3. HARDWARE SETUP

3.7 Expansion Cards

WARNING! Make sure that you unplug your power supply when adding or

removing expansion cards or other system components. Failure to do so may
cause severe damage to both your motherboard and expansion cards.

3.7.1 Expansion Card Installation Procedure

1. Read the documentation for your expansion card and make any necessary hard­ware or software settings for your expansion card, such as jumpers or switches.

2. Remove your computer system’s cover and the bracket plate with screw on the
slot you intend to use. Keep the bracket for possible future use.

3. Carefully align the card’s connectors and press firmly.

4. Secure the card on the slot with the screw you removed above.

5. Replace the computer system’s cover.

6. Set up the BIOS if necessary
(such as IRQ xx Used By ISA: Yes in PNP AND PCI SETUP)

7. Install the necessary software drivers for your expansion card.

3. H/W SETUP

Expansion Cards

ASUS MEW-B User’s Manual 27

3. HARDWARE SETUP

3.7.2 Assigning IRQs for Expansion Cards

Some expansion cards need an IRQ to operate. Generally, an IRQ must be exclu­sively assigned to one use. In a standard design, there are 16 IRQs available but
most of them are already in use, leaving 6 IRQs free for expansion cards. If your
motherboard has PCI audio onboard, an additional IRQ will be used. If your moth­erboard also has MIDI enabled, another IRQ will be used, leaving 4 IRQs free.

The following table lists the default IRQ assignments for standard PC devices. Use
this table when configuring your system and for resolving IRQ conflicts.

Standard Interrupt Assignments

IRQ Priority Standard Function

0 1 System Timer
1 2 Keyboard Controller
2 N/A Programmable Interrupt
3* 11 Communications Port (COM2)
4* 12 Communications Port (COM1)
5* 13
6 14 Floppy Disk Controller
7* 15 Printer Port (LPT1)
8 3 System CMOS/Real Time Clock
9* 4 ACPI Mode when used
10* 5 IRQ Holder for PCI Steering
11* 6 IRQ Holder for PCI Steering
12* 7 PS/2 Compatible Mouse Port
13 8 Numeric Data Processor
14* 9 Primary IDE Channel
15* 10 Secondary IDE Channel

*These IRQs are usually available for ISA or PCI devices.

28 ASUS MEW-B User’s Manual

3. HARDWARE SETUP

Interrupt Request Table

INT-A INT-B INT-C INT-D

PCI slot 1 shared -- -- -­PCI slot 2 -- shared -- -­PCI slot 3 -- -- -- -­PCI slot 4 -- -- -- shared
Onboard Audio/AMR/SMBus -- shared -- -­Onboard VGA shared ---- -­USB -- -- -- shared

IMPORTANT: If using PCI cards on shared slots, make sure that the drivers support
“Share IRQ” or that the cards do not need IRQ assignments. Conflicts will arise
between the two PCI groups that will make the system unstable or cards inoperable.

Both ISA and PCI expansion cards may require IRQs. System IRQs are available to
cards installed in the ISA expansion bus first, then any remaining IRQs are available
to PCI cards. Currently, there are two types of ISA cards.

The original ISA expansion card design, now referred to as “Legacy” ISA cards,
requires that you configure the card’s jumpers manually and then install it in any
available slot on the ISA bus. To see a map of your used and free IRQs in Windows
98, the Control Panel icon in My Computer, contains a System icon, which gives
you a Device Manager tab. Double-clicking on a specific hardware device gives
you the Resources tab which shows the Interrupt number and address. Double-click
Computer to see all the interrupts and addresses for your system. Make sure that no
two devices use the same IRQ or your computer will experience problems when
those two devices are in use at the same time.

To simplify this process, this motherboard complies with the Plug and Play (PnP)
specification which was developed to allow automatic system configuration when­ever a PnP-compliant card is added to the system. For PnP cards, IRQs are assigned
automatically from those available.

If the system has both Legacy and PnP ISA cards installed, IRQs are assigned to
PNP cards from those not used by Legacy cards. The PCI and PNP configuration of
the BIOS setup utility can be used to indicate which IRQs are being used by Legacy
cards. For older Legacy cards that does not work with the BIOS, you can contact
your vendor for an ISA Configuration Utility.

An IRQ number is automatically assigned to PCI expansion cards after those used
by Legacy and PnP ISA cards. In the PCI bus design, the BIOS automatically as­signs an IRQ to a PCI slot that has a card in it that requires an IRQ. To install a PCI
card, you need to set something called the INT (interrupt) assignment. Since all the
PCI slots on this motherboard use an INTA #, be sure that the jumpers on your PCI
cards are set to INT A.

ASUS MEW-B User’s Manual 29

3. HARDWARE SETUP

3.7.3 Assigning DMA Channels for ISA Cards

Some ISA cards, both legacy and PnP, may also need to use a DMA (Direct Memory
Access) channel. DMA assignments for this motherboard are handled the same way
as the IRQ assignment process described earlier . T o select a DMA channel, see PCI/
PNP ISA DMA Resource Exclusion in 4.4.3 PCI Configuration. NOTE: The on-
board audio by default uses DMA1.

IMPORTANT: To avoid conflicts, reserve the necessary IRQs and DMAs for

legacy ISA cards (see PCI/PNP ISA IRQ Resource Exclusion and PCI/PNP

DMA IRQ Resource Exclusion in 4.4.3 PCI Configuration). Choose Yes in
IRQ xx Used By ISA and DMA x Used By ISA for those IRQs and DMAs you

want to reserve).

3.7.4 Audio Modem Riser (AMR) Slot

Expansion Cards

3. H/W SETUP

This connector supports a specially designed audio and/or modem card called an AMR.
Main processing is done through software and controlled by the motherboard’s Intel I/
O Controller Hub (ICH). This provides an upgradeable audio and/or modem solution
at an incredibly low cost. There are two types of AMR, one defined as primary and
another defined as secondary. This motherboard uses the primary channel so that a
secondary AMR can coexist without the need to disable the onboard CODEC. The
motherboard’s onboard CODEC must be disabled when using a primary AMR.

NOTE: An AMR is not included with this motherboard.

0 1

®

MEW-B

MEW-B Audio Modem Riser (AMR) Connector

30 ASUS MEW-B User’s Manual