ASUS MESVM User Manual

R

MES-VM

Socket 370 microATX 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.

• SiS is a trademark of Silicon Integrated Corporation.

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

• 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 MES-VM
Manual Revision: 1.03 E379
Release Date: April 1999

2 ASUS MES-VM 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

Tel (English): [phone] ext. 706
Tel (Chinese): [phone] ext. 111
Fax: [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.tw/pub/ASUS

ASUS COMPUTER GmbH (Europe)

Marketing

Address: Harkort Str. 25, 40880 Ratingen, BRD, Germany
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

Hotline: [phone]
BBS: 49-2102-448690
Email: [e-mail]
WWW: www.asuscom.de
FTP: ftp.asuscom.de/pub/ASUSCOM

ASUS MES-VM 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 MES-VM Motherboard ............................................ 8

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

2.1.2 Performance ....................................................................... 9

2.1.3 Intelligence....................................................................... 10

2.2 Parts of the ASUS MES-VM Motherboard .............................. 11

3. HARDWARE SETUP ..................................................................... 12

3.1 Motherboard Layout ................................................................. 12

3.2 Layout Contents ........................................................................ 13

3.3 Hardware Setup Procedure ....................................................... 14

3.4 Motherboard Settings................................................................ 14

3.5 System Memory (DIMM) ......................................................... 16

3.5.1 VGA Shared Memory with DIMM.................................. 16

3.5.2 General DIMM Notes ...................................................... 16

3.5.3 DIMM Memory Installation ............................................ 17

3.6 Central Processing Unit (CPU) ................................................. 18

3.7 Expansion Cards ....................................................................... 19

3.7.1 Expansion Card Installation Procedure............................ 19

3.7.2 Assigning IRQs for Expansion Cards .............................. 19

3.7.3 Assigning DMA Channels for ISA Cards ........................ 20

3.7.4 ISA Cards and Hardware Monitor ................................... 20

3.8 External Connectors.................................................................. 21

3.9 Power Connection Procedures .................................................. 31

4. BIOS SETUP.................................................................................... 32

4.1 Flash Memory Writer Utility .................................................... 32

4.1.1 Main Menu....................................................................... 32

4.1.2 Managing and Updating Your BIOS................................ 34

4.2 BIOS Setup Program ................................................................ 35

4.2.1 BIOS Menu Bar ............................................................... 36

4.2.2 Legend Bar....................................................................... 36

4.3 Main Menu................................................................................ 38

4.3.1 Primary & Secondary Master/Slave ................................ 39

4 ASUS MES-VM User’s Manual

CONTENTS

4.4 Advanced .................................................................................. 44

4.4.1 Chip Configuration .......................................................... 45

4.4.2 I/O Device Configuration ................................................ 47

4.4.3 PCI Configuration............................................................ 49

4.4.4 Shadow Configuration ..................................................... 52

4.5 Power Menu .............................................................................. 53

4.5.1 Power Up Control ............................................................ 55

4.5.2 Hardware Monitor............................................................ 56

4.6 Boot Menu ................................................................................ 57

4.7 Exit Menu ................................................................................. 59

5. SOFTWARE SETUP....................................................................... 61

5.1 Windows 98 First Time Installation.......................................... 61

5.2 MES-VM Support CD Setup Screen ........................................ 62

5.3 Installing the Video Driver........................................................ 63

5.4 ASUS PC Probe Setup .............................................................. 67

5.5 Adobe Acrobat Reader .............................................................. 68

5.6 Install PC-Cillin ........................................................................ 69

6. SOFTWARE REFERENCE ........................................................... 71

6.1 ASUS PC Probe ........................................................................ 71

6.1.1 Starting ASUS PC Probe.................................................. 71

6.1.2 Using the ASUS PC Probe............................................... 72

6.2 Desktop Management Interface (DMI)..................................... 74

6.2.1 Introducing the ASUS DMI Configuration Utility .......... 74

6.2.2 Starting the ASUS DMI Configuration Utility ................ 74

6.2.3 Using the ASUS DMI Configuration Utility ................... 75

7. APPENDIX....................................................................................... 77

7.1 ASUS PCI-L101 Fast Ethernet Card ........................................ 77

7.1.1 Features ............................................................................ 78

7.1.2 Software Driver Support .................................................. 78

7.1.3 Question and Answer....................................................... 78

7.2 Glossary .................................................................................... 79

ASUS MES-VM 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! Be sure that there is suf ficient 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.

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.

6 ASUS MES-VM 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) Ribbon cable for master and slave UltraDMA/33 IDE drives
(1) Ribbon cable for master and slave UltraDMA/33 and/or UltraDMA/66 IDE drives
(1) Ribbon cable for (1) 5.25” and (2) 3.5” floppy drives
(1) Serial COM2 cable connector set
(1) Bag of spare jumper caps
(1) Support CD with drivers and utilities
(1) This Motherboard User’s Manual

ASUS IrDA-compliant infrared module (optional)
ASUS PCI-L101 Wake-On-LAN 10/100 Fast Ethernet Card (optional)

ASUS MES-VM User’s Manual 7

2. FEATURES

Features

2. FEATURES

2.1 The ASUS MES-VM Motherboard

The ASUS MES-VM motherboard is carefully designed for the demanding PC user
who wants many intelligent features in a small package.

2.1.1 Specifications

• Intel Processor Support: Supports Intel’ s Celeron processor designed for Socket
370 and packaged in Plastic Pin Grid Array (PPGA).

• SiS AGPset: SiS’ 620 AGPset with a built-in 6326 AGP 2X graphics controller
supports a 100MHz Front Side Bus (FSB) and UltraDMA/66, which allows burst
mode data transfer rates of up to 66.6MBps.

• Enhanced ACPI & Anti-Boot Virus BIOS: 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.

• Versatile Memory: Equipped with two DIMM sockets to support Intel PC100-
compliant SDRAMs (8, 16, 32, 64, 128, or 256MB) up to 512MB.

• Built-in Graphics: Built-in AGP 2X graphics controller can use shared system
memory or optional dedicated onboard VGA memory (8MB SDRAM).

• Onboard Audio and AC’97 CODEC (optional): Features a 32-bit Crystal PCI
audio onboard. Features an 18-bit stereo, full duplex, audio codec that conforms
to AC’97 analog component specfications. Includes a complete online help to
guide you through the audio software.

• PCI & ISA Expansion: Provides three 32-bit PCI expansion slots and one 16-
bit ISA expansion slot .

• Wake-On-LAN Connector: Supports Wake-On-LAN activity through an op-
tional ASUS PCI-L101 Fast Ethernet card (see APPENDIX) or a similar ethernet
card.

• SB-Link™: Features Creative’s SB-Link™, allowing SB16 compatibility, us­ing Intel’ s PC-PCI and serialized IRQ protocols, to A WE64D or compatible PCI
audio cards.

• Super Multi-I/O: Provides two high-speed UART compatible serial ports and
one parallel port with EPP and ECP capabilities.

• Desktop Management Interface (DMI): Supports DMI through BIOS, which
allows hardware to communicate within a standard protocol creating a higher
level of compatibility. (Requires DMI-enabled components.)

• IrDA: Supports an optional infrared port module for wireless interface.

8 ASUS MES-VM User’s Manual

2. FEATURES

2.1.2 Performance

• UltraDMA/66 & UltraDMA/33: Comes with an onboard PCI Bus Master IDE

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

• 66/100MHz Asynchr onous & 100/100MHz Synchronous Host/DRAM Clock
Support: CPU frequency can operate at 66MHz or 100MHz while system

memory operates at 100MHz or 66MHz. This can optimize the VGA perfor­mance under shared memory configuration.

• 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 SiS’
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.

Smart Series

2. FEATURES

• 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
SDRAM.

• ACPI Ready: ACPI (Advanced Configuration and Power Interface) is also imple­mented 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.
T o fully utilize the benefits of ACPI, an ACPI-supported OS such as the succes­sor of Windows 95 must be used.

• PC’98 Compliant: Both the BIOS and hardware levels of the motherboard meets
PC’98 compliancy . The new PC’98 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 Windows 95/98/NT.

ASUS MES-VM User’s Manual 9

2. FEATURES

2.1.3 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.

2. FEATURES

Smart Series

• 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: T oday’ s operating systems such as W indows 95, W in-

dows 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.

• Auto Fan Off: The system fans will power off automatically even in sleep
mode. This function reduces both energy consumption and system noise, and is

an important feature to implement silent PC systems.

• Dual Function Power Button: The system can be in one of two states, one is
Sleep mode and the other is the Soft-Off mode. Pushing the power button for
less than 4 seconds places the system into Sleep mode. When the power button
is pressed for more than 4 seconds, it enters 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, any
user can access vital information from their computer from anywhere in the world!

• Message LED (requires ACPI OS suppor t): Chassis LEDs now act as infor­mation 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.

• Keyboard Power Up: Keyboard Power Up can be enabled or disabled to allow
the computer to be powered ON using your keyboard.

10 ASUS MES-VM User’s Manual

2. FEATURES

2.2 Parts of the ASUS MES-VM Motherboard

T: PS/2 Mouse
B: PS/2 Keyboard

T: USB1
B: USB2

Serial COM1

T: Parallel
B: Serial/VGA

VGA Connector

T: Joystick/Midi
B: Out/In/Mic
(optional)

3 PCI Slots

Audio CODEC
(optional)

2 DIMM
Sockets

Socket 370

SiS 620 AGPset

with AGP 2X VGA

8MB onboard VGA

Memory (optional)

Floppy

Connector

IDE

Connectors

2. FEATURES

Motherboard Parts

PCI Audio
(optional)

Programmable
Flash EEPROM

1 ISA Slot

SiS 5595 with

hardware monitor

Onboard

Buzzer

Multi-I/O

ASUS MES-VM User’s Manual 11

3. HARDWARE SETUP

3.1 Motherboard Layout

BUS FREQ

PS/2

T:Mouse
B:Keyboard

Row

2301

FS0

FS1

FS2

FS3

USB

T: Port 1
B:Port 2

COM1

PARALLEL PORT

VGA

Motherboard Layout

3. H/W SETUP

Line
Out

Line

Mic

GAME_AUDIO

AUDIOEN

MODEM

In

In

Audio

Codec

PCI Audio

Chipset

CD_IN

VEN_DIS

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

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

CDROM_AUDIO

01

Socket 370

PCI Slot 1 (PCI1)

PCI Slot 2 (PCI2)

PCI Slot 3 (PCI3)

2Mbit Flash EEPROM
(Programmable BIOS)

ISA Slot 1

(ISA1)

SiS620

AGPset

with

AGP 2X

CPU_FAN

FREQ MULT

BF3
BF2
BF1
BF0

WOL_CON

SiS5595

with

Hardware

Monitor

2 MB

SDRAM

2 MB

SDRAM

2 MB

SDRAM

2 MB

SDRAM

Floppy

CR2032 3V
Lithium Cell

CMOS Power

CLR CMOS/PWD

Buzzer

COM2

IR

ATXPWR

CLR_PASSWD

PANEL

Secondary IDE

Primary IDE

CHA_FAN

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

12 ASUS MES-VM User’s Manual

3. HARDWARE SETUP

3.2 Layout Contents

Motherboard Settings

1) VEN_DIS/AUDIOEN p. 14 Video & Audio Settings (Enable/Disable)

2) FS0, FS1, FS2, FS3 p. 15 CPU External Clock (BUS) Frequency Selector

3) BF0, BF1, BF2, BF3 p. 15 CPU:BUS Frequency Multiple

Expansion Slots

1) DIMM1, DIMM2 p. 16 168-Pin DIMM Memory Support

2) Socket 370 p. 18 Central Processing Unit (CPU) Socket

3) SLOT1 p. 19 16-bit ISA Bus Expansion Slots

4) PCI1, PCI2, PCI3 p. 19 32-bit PCI Bus Expansion Slots

Connectors

1) PS2KBMS p. 21 PS/2 Mouse Connector (6-pin female)

2) PS2KBMS p. 21 PS/2 Keyboard Connector (6-pin female)

3) USB p. 22 Universal Serial BUS Ports 1 & 2 (T wo 4-pin female)

4) PRINTER p. 22 Parallel Port Connector (25-pin female)

5) COM1 p. 22 Serial Port COM1 Connector (9-pin male)

6) VGA p. 23 Monitor (VGA) Output Connector (15-pin female)

7) GAME_AUDIO p. 23 Joystick/Midi Connector (15-pin female) (optional)

8) GAME_AUDIO p. 23 Audio Port Connectors (Three 1/8” female) (optional)

9) PRIMAR Y/SECONDARY IDE p. 24 Primary/Secondary IDE Connectors (Two 40-1 pins)

10) FLOPPY p. 24 Floppy Disk Drive Connector (34-1pins)

11) WOL_CON p. 25 Wake-On-LAN Header (3 pins)

12) CHA_FAN, CPU_FAN p. 25 Chassis and CPU Fan Connectors (Two 3 pins)

13) IR p. 26 IrDA-Compliant Infrared Module Connector (5 pins)

14) MODEM/CD_IN/CDROM p. 26 Internal Audio Connectors (Three 4-pin)

15) SPEAKER (PANEL) p. 28 System Warning Speaker Connector (4 pins)

16) SMI (PANEL) p. 28 SMI Switch Lead (2 pins)
KEYLOCK (

17)

18) MSG.LED (PANEL) p. 28 System Message LED (2 pins)

19) RESET (PANEL) p. 29 Reset Switch Lead (2 pins)

20)

PWR.LED (

21) IDELED (P ANEL) p. 29 IDE LED Activity Light (2 pins)

22) PWR.SW (PANEL) p. 29 ATX Power & Soft-Off Switch Lead (2 pins)

23) ATXPWR p. 29 ATX Power Supply Connector (20 pins)

PANEL

PANEL

)

)

p. 28 Keyboard Lock Switch Lead (2 pins)

p. 29 System Power LED Lead (3-1 pins)

*

3. H/W SETUP

Layout Contents

*

The onboard hardware monitor uses the address 290H-297H so legacy ISA cards must not

use this address; otherwise, conflicts will occur.

ASUS MES-VM User’s Manual 13

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.

W ARNING! Computer motherboards and expansion cards contain very delicate

Motherboard Settings

3. H/W SETUP

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.

3. HARDWARE SETUP

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.

1. Video & Audio Settings (VEN_DIS & AUDIOEN)

The built-in AGP VGA and the onboard 32-bit PCI audio may be enabled or
disabled using these jumpers.

Setting VEN_DIS Setting AUDIOEN

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

VEN_DIS

3
2
1

Enable

(Default)

VEN_DIS

3
2
1

Disable

MES-VM Video & Audio Settings

AUDIOEN

3
2
1

Enable

(Default)

AUDIOEN

3
2
1

Disable

14 ASUS MES-VM User’s Manual

3. HARDWARE SETUP

2. CPU Bus Frequency Selector (FS0, FS1, FS2, FS3)

This option tells the clock generator what frequency to send to the CPU, DRAM,
and the AGPset. This allows the selection of the CPU’ s External frequency (or

BUS Clock). The BUS Clock multiplied by the BUS Ratio equals the CPU’s
Internal frequency (the advertised CPU speed). NOTE: You may set the

memory speed independently from the CPU Bus Frequency. Depend­ing on your memory type PC66 (66MHz) or PC100 (100MHz), select
the appropriate “RAM” speed along with the appropriate “CPU” speed.

FS0

FS1

FS2

83MHz
83MHz
33MHz

FS0

FS1

95MHz
63MHz
31MHz

FS2

FS3

FS3

FS0

FS1

95MHz
95MHz
31MHz

FS0

FS1

100MHz

66MHz
33MHz

FS2

FS2

FS3

FS3

FS0

FS1

100MHz
100MHz

33MHz

FS0

FS1

112MHz

74MHz
37MHz

FS2

FS2

FS3

FS3

FS0

FS1

112MHz
112MHz

37MHz

FS0

FS1

133MHz

88MHz
33MHz

FS2

FS2

MES-VM CPU
Bus Frequency Settings

CPU
RAM
PCI

CPU
RAM
PCI

3
2
1

3
2
1

FS0

FS1

66MHz
66MHz
33MHz

FS0

FS1

66MHz

100MHz

33MHz

FS2

FS2

FS3

FS3

FS0

FS1

75MHz
75MHz
30MHz

FS0

FS1

90MHz
90MHz
30MHz

FS2

FS2

FS3

FS3

FS3

FS3

FS0

FS1

133MHz
133MHz

33MHz

FS2

FS3

3. CPU Core:BUS Frequency Multiple (BF0, BF1, BF2, BF3)

This option sets the frequency multiple between the Internal frequency of
the CPU and the CPU’ s External frequency . These must be set in conjunc­tion with the CPU Bus Frequency.

BF3
BF2
BF1
BF0

BF3
BF2
BF1
BF0

BF3
BF2
BF1
BF0

1 2 3

2.5x(5/2)

5.0x(5/1)

7.5x(15/2)

BF3
BF2
BF1
BF0

BF3
BF2
BF1
BF0

BF3
BF2
BF1
BF0

1 2 3

3.0x(3/1)

5.5x(11/2)

8.0x(8/1)

BF3
BF2
BF1
BF0

BF3
BF2
BF1
BF0

BF3
BF2
BF1
BF0

1 2 3

3.5x(7/2)

6.0x(6/1)

BF3
BF2
BF1
BF0

BF3
BF2
BF1
BF0

1 2 3

4.0x(4/1)

6.5x(13/2)

BF3
BF2
BF1
BF0

BF3
BF2
BF1
BF0

MES-VM CPU Core:
Bus Frequency Multiple

1 2 3

2.0x(2/1)

4.5x(9/2)

7.0x(7/1)

W ARNING! Frequencies above 1 00MHz exceed the specifications for the on-

board chipset and are not guaranteed to be stable. PCI frequencies above 33MHz
exceed the specifications for PCI cards and are not guaranteed to be stable.

Set the jumpers by the Internal speed of your processor as follows:

3. H/W SETUP

Motherboard Settings

(BUS Freq. PC66 RAM) (Freq. Multiple)

Intel CPU Model Freq. Mult. BUS F. FS0 FS1 FS2 FS3 BF3 BF2 BF1 BF0

Celeron (PPGA) 500MHz 7.5x 66MHz [2-3] [2-3] [2-3] [1-2] [1-2] [2-3] [1-2] [1-2]
Celeron (PPGA) 466MHz 7.0x 66MHz [2-3] [2-3] [2-3] [1-2] [2-3] [1-2] [2-3] [1-2]
Celeron (PPGA) 433MHz 6.5x 66MHz [2-3] [2-3] [2-3] [1-2] [1-2] [2-3] [2-3] [1-2]
Celeron (PPGA) 400MHz 6.0x 66MHz [2-3] [2-3] [2-3] [1-2] [1-2] [2-3] [2-3] [2-3]
Celeron (PPGA) 366MHz 5.5x 66MHz [2-3] [2-3] [2-3] [1-2] [2-3] [1-2] [1-2] [1-2]
Celeron (PPGA) 333MHz 5.0x 66MHz [2-3] [2-3] [2-3] [1-2] [2-3] [1-2] [1-2] [2-3]
Celeron (PPGA) 300MHz 4.5x 66MHz [2-3] [2-3] [2-3] [1-2] [2-3] [1-2] [2-3] [1-2]

ASUS MES-VM User’s Manual 15

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 either 8, 16, 32, 64, 128MB, or 256MB.

The SiS 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:

DIMM Location 168-pin DIMM Total Memory

Socket 1 (Rows 0&1) SDRAM 8, 16, 32, 64, 128, 256MB x1

System Memory

3. H/W SETUP

Socket 2 (Rows 2&3) SDRAM 8, 16, 32, 64, 128, 256MB x1

3. HARDWARE SETUP

Total System Memory (Max 512MB) =

3.5.1 VGA Shared Memory with DIMM

When using DIMM as shared memory for the onboard VGA, be sure that there is a
DIMM inserted into DIMM socket 1.

3.5.2 General DIMM Notes

• For the system CPU bus to operate at 100MHz, use only PC100-compliant
DIMMs. When this motherboard operates at 100MHz, most system will not

even boot if non-compliant modules are used because of the strict timing issues
involved under this speed. If your DIMMs are not PC100-compliant, set the
CPU bus frequency to 66MHz RAM to ensure system stability.

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

• Two possible memory chips are supported: SDRAM with and without ECC.

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

• BIOS shows SDRAM memory on bootup screen.

• 8 chips/side modules do not support ECC, only 9 chips/side modules support ECC.

• Single-sided DIMMs come in 16, 32, 64,128MB; double-sided come in 32, 64,
128, 256MB.

16 ASUS MES-VM User’s Manual

3. HARDWARE SETUP

3.5.3 DIMM Memory 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. DIMM mod­ules are longer and have different pin contact on each side and therefore have a
higher pin density. SIMM modules have the same pin contact on both sides.

2

1

Lock

Lock

88 pins

60 pins

20 pins

DIMM Socket 1

DIMM Socket 2

MES-VM 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).

3. H/W SETUP

System Memory

168-Pin DIMM Notch Key Definitions (3.3V)

DRAM Key Position

RFU

Buffered

Unbuffered

Voltage Key Position

5.0V

Reserved

3.3V

The notches on the DIMM module 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.

ASUS MES-VM User’s Manual 17

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

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

Notch

MES-VM Socket 370

18 ASUS MES-VM 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 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)

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

3.7.2 Assigning IRQs for Expansion Cards

Some expansion cards need to use 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 extra IRQ will be used, leaving 5 IRQs
free. If your motherboard has ISA audio onboard, an extra 3 IRQs will be used,
leaving 3 IRQs free.

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. 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.

3. H/W SETUP

Expansion Cards

ASUS MES-VM User’s Manual 19

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.

Expansion Cards

3. H/W SETUP

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 on­board audio by default uses DMA1.

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

legacy ISA cards (see PCI/PNP USA 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 ISA Cards and Hardware Monitor

The onboard hardware monitor uses the address 290H-297H so legacy ISA cards
must not use this address or else conflicts will occur.

20 ASUS MES-VM User’s Manual

3. HARDWARE SETUP

3.8 External Connectors

WARNING! Some pins are used for connectors or power sources. These are

clearly distinguished from jumpers in the Motherboard Layout. Placing jumper
caps over these connector pins will cause damage to your motherboard.

IMPORTANT: Ribbon cables should always be connected with the red stripe on

Pin 1 side of the connector . The four corners of the connectors are labeled on the
motherboard. Pin 1 is the side closest to the power connector on hard drives and
floppy drives. IDE ribbon cable must be less than 46 cm (18 in.), with the second
drive connector no more than 15 cm (6 in.) from the first connector.

1) PS/2 Mouse Connector (6-pin PS2KBMS)

The system will direct IRQ12 to the PS/2 mouse if one is detected. If one is not
detected, expansion cards can use IRQ12. See PS/2 Mouse Function Control
in 4.4 Advanced Menu.

PS/2 Mouse (6-pin Female)

2) PS/2 Keyboard Connector (6-pin PS2KBMS)
This connection is for a standard keyboard using an PS/2 plug (mini DIN). This
connector will not allow standard AT size (large DIN) keyboard plugs. You
may use a DIN to mini DIN adapter on standard AT keyboards.

Connectors

3. H/W SETUP

PS/2 Keyboard (6-pin Female)

ASUS MES-VM User’s Manual 21

3. H/W SETUP

Connectors

3. HARDWARE SETUP

3) Universal Serial BUS Ports 1 & 2 (Two 4-pin USB)

Two USB ports are available for connecting USB devices.

USB 1

Universal Serial Bus (USB) 2

4) Parallel Port Connector (25-pin PRINTER)
You can enable the parallel port and choose the IRQ through Onboard Parallel
Port (see 4.4.2 I/O Device Configuration).
NOTE: Serial printers must be connected to the serial port.

Parallel (Printer) Port (25-pin Female)

5) Serial Port COM1 Connector (9-pin COM1)

One serial port is ready for a mouse or other serial devices. A second serial port
is available using a serial port bracket connected from the motherboard to an
expansion slot opening. See Onboard Serial Port 1 in 4.2.2 I/O Device Con-
figuration for settings.

Serial Port (9-pin Male) COM 1

22 ASUS MES-VM User’s Manual

3. HARDWARE SETUP

6) Monitor Output Connector (15-pin VGA)

This connector is for output to a VGA-compatible device.

VGA Monitor (15-pin Female)

7) Joystick/MIDI Connector (15-pin GAME_AUDIO)

You may connect game joysticks or game pads to this connector for playing
games. Connect MIDI devices for playing or editing audio.

Joystick/Midi (15-pin Female)

8) Audio Port Connectors (Three 1/8” GAME_AUDIO)
Line Out can be connected to headphones or preferably powered speakers.
Line In allows tape players or other audio sources to be recorded by your com-

puter or played through the Line Out. Mic allows microphones to be connected
for inputting voice.

MicLine InLine Out

1/8" Stereo Audio Connectors

Connectors

3. H/W SETUP

ASUS MES-VM User’s Manual 23

3. HARDWARE SETUP

9) Primary / Secondary IDE Connectors (Two 40-1pin IDE)

These connectors support the provided IDE hard disk ribbon cable.
After connecting the single end to the board, connect the two plugs at the other
end to your hard disk(s). If you install two hard disks, you must configure the
second drive to Slave mode by setting its jumper accordingly. Please refer to
your hard disk documentation for the jumper settings. BIOS now supports SCSI
device or IDE CD-ROM bootup (see Boot Sequence in 4.6 Boot Menu). (Pin

20 is removed to prevent inserting in the wrong orientation when using
ribbon cables with pin 20 plugged).

TIP: You may configure two hard disks to be both Masters with two ribbon

cables – one for the primary IDE connector and another for the secondary IDE
connector . You may install one operating system on an IDE drive and another on
a SCSI drive and select the boot disk through Boot Sequence in 4.6 Boot Menu.

3. H/W SETUP

Connectors

MES-VM IDE Connectors

NOTE: Orient the red markings

on the IDE ribbon cable to

Secondary IDE
Connector

PIN 1

PIN 1.

Primary IDE
Connector

10) Floppy Disk Drive Connector (34-1pin FLOPPY)

This connector supports the provided floppy drive ribbon cable. After connect­ing the single end to the board, connect the two plugs on the other end to the
floppy drives. (Pin 5 is removed to prevent inserting in the wrong orienta-

tion when using ribbon cables with pin 5 plugged).

NOTE: Orient the red markings on
the floppy ribbon cable to

PIN 1.

PIN 1

MES-VM Floppy Disk Drive Connector

24 ASUS MES-VM User’s Manual

3. HARDWARE SETUP

11) Wake-On-LAN Connector (3-pin WOL_CON)

These connector connects to LAN cards with a Wake-On-LAN output, such as
the ASUS PCI-L101 Ethernet card (see 7.3 ASUS PCI-L101 Fast Ethernet Card).
The connector powers up the system when a wakeup packet or signal is received
through the LAN card.

IMPORTANT: This feature requires that Wake On LAN is set to Enabled (see

4.5.1 Power Up Control) and that your system has an ATX power supply with at
least 720mA +5V standby power.

+5 Volt Standby
Ground
PME

IMPORTANT: Requires an ATX power
supply with at least 720mA +5Volt
standby power.

MES-VM Wake-On-LAN Connector

12) Chassis and CPU Fan Connectors (3-pin CHA_, CPU_FAN)

These connectors support cooling fans of 500mA (6 Watts) or less. Orientate the
fans so that the heat sink fins allow airflow to go across the onboard heat sink(s)
instead of the expansion slots. Depending on the fan manufacturer, the wiring
and plug may be different. The red wire should be positive, while the black
should be ground. Connect the fan’ s plug to the board taking into consideration
the polarity of the connector . NOTE: The “Rotation” signal is to be used only

by a specially designed fan with rotation signal.

WARNING! The CPU and/or motherboard will overheat if there is no airflow

across the CPU and onboard heatsinks. Damage may occur to the motherboard
and/or the CPU fan if these pins are incorrectly used. These are not jumpers,

do not place jumper caps over these pins.

Connectors

3. H/W SETUP

MES-VM Cooling Fan Connector

ASUS MES-VM User’s Manual 25

CPU Fan Power

Ground
+12V
Rotation

Rotation

+12V

Ground

Chassis Fan Power

3. HARDWARE SETUP

13) IrDA-Compliant Infrared Module Connector (5-pin IR)

This connector supports the optional wireless transmitting and receiving infra­red module. This module mounts to a small opening on system cases that sup­port this feature. You must also configure the setting through UART2 Use In-
frared (see 4.4.2 I/O Device Configuration) to select whether UART2 is di­rected for use with COM2 or IrDA. Use the five pins as shown in Back V iew and
connect a ribbon cable from the module to the motherboard according to the pin
definitions.

3. H/W SETUP

Connectors

+5V

(NC)

IRRX

Front View

IRTX

GND

Back View

IRTX
GND

IRRX

+5V

(NC)

MES-VM Infrared Module Connector

14) Internal Audio Connectors (4-pin MODEM, CD_IN, CDROM_AUDIO)

These connectors allow you to receive stereo audio input from such sound sources
as a CD-ROM, TV tuner, or MPEG card. The MODEM connector allows the
onboard audio to interface with a voice modem card with a similar connector . It
also allows the sharing of microphone and speaker between the onboard audio
and the voice modem card.

Mono Input
Ground
Ground
Mono Output

MODEM

Left Audio Channel
Ground
Ground
Right Audio Channel

CD_IN

Left Audio Channel
Ground
Ground
Right Audio Channel

CDROM_AUDIO

MES-VM Internal Audio Connectors

26 ASUS MES-VM User’s Manual

3. HARDWARE SETUP

(This page was intentionally left blank)

Connectors

3. H/W SETUP

ASUS MES-VM User’s Manual 27