VIA Technologies VT82C686A User manual

Mainboard User’s Manual
This publication, including all photographs, illustrations and
software, is protected under international copyright laws, with all
rights reserved. Neither this manual, nor any of the material
contained herein, may be reproduced without the express written
consent of the manufacturer.
The information in this document is subject to change without
notice. The manufacturer makes no representations or warranties
with respect to the contents hereof and specifically disclaims any
implied warranties of merchantability or fitness for any particular
purpose. Further, the manufacturer reserves the right to revise this
publication and to make changes from time to time in the content
hereof without obligation of the manufacturer to notify any person
of such revision or changes.
Trademarks
I M, VGA, and PS/2 are registered trademarks of International
usiness Machines.
Intel, Pentium/II/III, and MMX are registered trademarks of Intel
Corporation.
Microsoft, MS-DOS and Windows 95/98/NT/ME/2000 are
registered trademarks of Microsoft Corporation.
PC-cillin and ChipAwayVirus are trademarks of Trend Micro Inc.
Award is a trademark of Award Software Inc.
A3D is a registered trademark of Aureal Inc.
Gamut is a registered trademark of Formosoft International Inc.
SuperVoice is a registered trademark of Pacific Image
Communications Inc.
MediaRing Talk is a registered trademark of MediaRing Inc.
3Deep is a registered trademark of E-Color Inc.
Other names used in this publication may be trademarks and are
acknowledged.
Copyright © 2001
All Rights Reserved
M781+ Series, V3.0
V133X February 2001

Mainboard User’s Manual
II

Mainboard User’s Manual
Table of Contents
Trademarks..............................................................................I
Chapter 1: Introduction...................................................................1
Key Features...........................................................................2
Package Contents....................................................................5
Static Electricity Precautions..................................................6
Pre-Installation Inspection......................................................6
Chapter 2: Mainboard Installation..................................................7
Mainboard Components..........................................................8
I/O Ports..................................................................................9
Install A CPU..........................................................................9
Install Memory......................................................................11
Setting Jumper Switches.......................................................12
Install the Mainboard............................................................15
Optional Extension rackets.................................................17
Install Other Devices............................................................18
Expansion Slots....................................................................20
Chapter 3: IOS Setup Utility......................................................23
Introduction..........................................................................23
Running the Setup Utility.....................................................24
Standard CMOS Features Page.............................................25
Advanced IOS Features Page.............................................26
Advanced Chipset Features Page..........................................29
Integrated Peripherals Page...................................................32
Power Management Setup Page............................................35
PnP/PCI Configurations Page...............................................37
Hardware Monitor Page........................................................39
Frequency/Voltage Control Page..........................................40
Load est Performance Defaults..........................................41
Load Optimized Defaults......................................................41
Set Password.........................................................................41
Save & Exit Setup.................................................................42
Exit Without Saving..............................................................42
Chapter 4: Software & Applications.............................................43
Introduction..........................................................................43
Installing Support Software..................................................43
Auto-installing under Windows 98/ME/2000.......................45
III

Mainboard User’s Manual
Appendix A: Corel WordPerfect Suite 8 .................................A1
Welcome to Corel WordPerfect Suite 8 ..............................A2
Installing Corel WordPerfect Suite 8 ..................................A6
Learning how to use Corel WordPerfect Suite 8 .................A9
Support and Services .........................................................A13
Appendix B: Gamut2000 .......................................................... 1
1. GAMUT2000 Family ...................................................... 2
1.1 LifeAmp - Versatile Audio Playback System ............ 2
1.2 AudioPort - Audio Transportation System ................ 4
2. Installation ....................................................................... 5
2.1 efore eginning: System Requirements .................. 5
2.2 Uninstalling the Previous of GAMUT2000................ 5
3. Main Console .................................................................. 7
3.1 Introduction ............................................................... 7
3.2 Function and Operation ............................................. 7
3.3 Main Menu ................................................................ 9
IV

1: Introduction
Chapter 1
Introduction
This mainboard has a Socket-370 processor socket for an Intel
PPGA FCPGA Celeron or FCPGA Pentium III processor. You
can install any one of these processors on the mainboard. The
mainboard supports front-side bus speeds of 66MHz, 100MHz or
133MHz.
This mainboard uses the VIA PM133 Pro Savage chipset which
provides CPU Plug & Play through firmware and Ultra DMA
33/66/100 (VT82C686 chip only) function. A 4X AGP slot for
highly graphics display, and integrates a S3 Savage4 Pro
2D 3D Video Accelerator. The mainboard has a built-in AC97
Codec, provides an AMR (Audio Modem Riser) slot to support
Audio and Modem application. In addition, the mainboard has an
extended set of ATX I O Ports including PS/2 keyboard and
mouse ports, two US ports, a parallel port, a VGA port, a serial
port, a game port and audio ports.
This mainboard has all the features you need to develop a powerful
multimedia workstation. The board is Micro ATX size and has
power connectors for an ATX power supply.
1

Mainboard User’s Manual
Key Features
The key features of this mainboard include:
Socket-370 Processor Support
Supports PPGA FCPGA Celeron CPUs
Supports FCPGA Pentium III CPUs
Supports 66MHz, 100MHz or 133MHz Front-Side us.
All processors are automatically configured using firmware and a
synchronous Host/DRAM Clock Scheme.
Memory Support
Two DIMM slots for 168-pin SDRAM memory modules
Support for 100/133 MHz memory bus
Maximum installed memory is 2 x 512M = 1G .
E pansion Slots
One AMR slot for a special audio/modem riser card
One AGP4X slot for AGP 2.0-compliant interface
Two 32-bit PCI slots for PCI 2.2-compliant bus interface
One 8/16-bit ISA slot.
Onboard IDE channels
Primary and Secondary PCI IDE channels
Support for PIO modes, us Mastering and Ultra DMA
33/66/100 (optional VT82C686 ) modes.
Power Supply and Power Management
ATX power supply connector
ACPI and previous PMU support, suspend switch
Supports Wake on LAN and Wake on Alarm.
2

1: Introduction
Built-in Graphics System
Onboard Savage4 Pro 128-bit 2D 3D Video Accelerator
2 to 32 M frame buffer use system memory
Supports high resolutions up to 1920x1440 16-bit colors,
S3 DX7 texture compression (S3TC)
Full AGP 4x, full speed hardware DVD Accelerator.
AC97 Codec
Compliant PC97 2.1 specification
Supports 18-bit ADC (Analog Digital Converter) and DAC
(Digital Analog Converter) as well as 18-bit stereo full-
duplex codec.
Onboard I/O Ports
Provides PC99 Color Connectors for easy peripheral device
connections
Floppy disk drive connector with 1Mb/s transfer rate
Two serial ports with 16550-compatible fast UART
One parallel port with ECP and EPP support
Two US ports, optional two US ports module
Two PS/2 ports for keyboard and mouse
One infrared port connector for optional module.
Onboard Flash ROM
Automatic CPU and board configuration support Plug and
Play of peripheral devices and expansion cards
uilt-in hardware monitoring for CPU & System
temperatures, fan speeds and mainboard voltages
uilt-in virus protection using Trend’s ChipAwayVirus
provides boot process virus protection.
3

Mainboard User’s Manual
Bundled Software
PC-Cillin2000 provides automatic virus protection under
Windows 95/98/NT/2000
Gamut2000 provides professional audio features included
MP3 encoding/playback
3Deep delivers the precise imagery and displays accurate
color in your monitor
Corel WordPerfect Suite 8 is a Microsoft Windows®
office application suite (optional)
WinDVD2000 is a DVD playback application (optional).
Dimensions
ATX form factor (24.4cm x 22cm).
4

1: Introduction
Package Contents
Attention: This mainboard series includes two different models.
They are M781MR+ (Modem Ready) and M781+ (without
Modem).
Please contact your local supplier for your purchase model.
Each model will support different specification, list as below:
Model Specification
M781MR+ Support an AMR v.90 56K Fax/Modem card
M781+ ---
Your mainboard package ships with the following items:
The mainboard
This User’s Guide
1 UDMA/66 IDE cable
1 Floppy disk drive cable
Support software on CD-ROM disk.
Optional Accessories
You can purchase the following optional accessories for this
mainboard.
Extended US module.
5

Mainboard User’s Manual
Static Electricity Precautions
Components on this mainboard can be damaged by static
electricity. Take the following precautions when unpacking the
mainboard and installing it in a system.
1. Keep the mainboard and other components in their original
static-proof packaging until you are ready to install them.
2. During installation, wear a grounded wrist strap if possible. If
you don’t have a wrist strap, discharge static electricity by
touching the bare metal of the system chassis.
3. Handle the mainboard carefully by the edges. Avoid touching
the components unless it is absolutely necessary. During
installation put the mainboard on top of the static-protection
packaging it came in with the component side facing up.
Pre-Installation Inspection
1. Inspect the mainboard for damage to the components and
connectors on the board.
2. If you suspect that the mainboard has been damaged, do not
connect power to the system. Contact your mainboard vendor
and report the damage.
6

2: Mainboard Installation
Chapter 2
Mainboard Installation
To install this mainboard in a system, follow the procedures in this
chapter:
Identify the mainboard components
Install a CPU
Install one or more system memory modules
Verify that any jumpers or switches are set correctly
Install the mainboard in a system chassis (case)
Connect any extension brackets or cables to the mainboard
connector headers
Install any other devices and make the appropriate connections to
the mainboard connector headers.
Note:
1. efore installing this mainboard, make sure jumper JP1 is set
to Normal setting. See this chapter for information on locating
JP1 and the setting options.
2. Never connect power to the system during installation. Doing
so may damage the mainboard.
7

Mainboard User’s Manual
Mainboard Components
Use the diagram below to identify the major components on the
mainboard.
Note: Any jumpers on your mainboard that do not appear in
this illustration are for testing only.
8

2: Mainboard Installation
I/O Ports
The illustration below shows a side view of the built-in I/O ports
on the mainboard.
Install CPU
This mainboard has a Socket-370 which supports Celeron PPGA
and FCPGA Pentium III processors.
Do not try to install a Socket 7 processor in the Socket-370. A
Socket 7 processor such as the Pentium-MMX, or the AMD K5/K6
does not fit in the Socket 370.
The following list notes the processors that are currently supported
by this mainboard.
FCPGA Pentium III: 500~1130MHz, FS : 100MHz, 133MHz
PPGA FCPGA Celeron: 300~700MHz, FS : 66 MHz
9

Mainboard User’s Manual
Installing a Socket-370 Processor
A processor installs into the ZIF (Zero Insertion Force) Socket-370
on the mainboard.
1. Locate the Socket-370 and CPUFAN1. Pull the locking lever
out slightly from the socket and raise it to the upright position.
2. On the processor, identify the Pin-1 corner by its beveled edge.
3. On the Socket-370, identify the Pin-1 corner. The Pin-1 corner
is at the top of the locking lever when it has locked.
4. Match the Pin-1 corners and insert the processor into the
socket. No force is required and the processor should drop into
place freely.
5. Swing the locking lever down and hook it under the catch on
the side of the socket. This secures the CPU in the socket.
6. All processors should be installed with a combination heatsink/
cooling fan, connect the cable from the fan to the CPU fan
power connector CPUFAN1.
10
CPUFAN1
Socket-370
Pin-1 Corner

DIMM1
DIMM2
2: Mainboard Installation
Install Memory
The mainboard has two DIMM sockets for system memory
modules. You must install at least one memory module in order to
use the mainboard.
For this mainboard, you must use 168-pin, 3.3V unbuffered PC100
or PC133 SDRAM memory modules. You can install any size
memory module from 16 M to 512M , so the maximum memory
size is 2 x 512M = 1G .
The edge connectors on the memory modules have cut outs, which
coincide with spacers in the DIMM sockets so that memory
modules can only be installed in the correct orientation.
To install a module, push the retaining latches at either end of the
socket outwards. Position the memory module correctly and insert
it into the DIMM socket. Press the module down into the socket so
that the retaining latches rotate up and secure the module in place
by fitting into notches on the edge of the module.
11

Mainboard User’s Manual
Setting Jumper Switches
Jumpers are sets of pins which can be connected together with
jumper caps. The jumper caps change the way the mainboard
operates by changing the electronic circuits on the mainboard. If a
jumper cap connects two pins, we say the pins are SHORT. If a
jumper cap is removed from two pins, the pins are OPEN.
Jumper JP1: Clear CMOS Memory
Use this jumper to clear the contents of the CMOS memory. You
may need to clear the CMOS memory if the settings in the Setup
Utility are incorrect and prevent your mainboard from operating.
To clear the CMOS memory, disconnect all the power cables from
the mainboard and then move the jumper cap into the CLEAR
setting for a few seconds.
Function Jumper Setting
Normal Operation Short Pins 1-2
Clear CMOS Memory Short Pins 2-3
Jumper JP5: Suspend to RAM Function Selector
Use this jumper to enable or disable the Suspend to RAM (STR)
function that keeps the system data in Suspend power saving mode.
You must also enable this function in the IOS Setup Utility.
Refer to Chapter 3.
Function Jumper Setting
Enable Short Pins 1-2
Disable Short Pins 2-3
12
1
JP6
1
JP17
1
JP1
1
JP18
1
JP5
1
JP7
1
JP8

2: Mainboard Installation
Jumper JP6: USB1 Wake up Selector
Use this jumper to enable or disable the US 1 (located on the I/O
port panel) Wake up function that wake up the system from power
saving mode.
Function Jumper Setting
Disable Short Pins 1-2
Enable Short Pins 2-3
Jumper JP7: Set System Bus 100 MHz Forced
Use this jumper to set the system bus frequency. In the normal
setting, the system will automatically select the correct frequency
according to the kind of processor installed. In the Force 100 MHz
setting, the system will use a 100 MHz system bus even if the
processor has designed to operate with a 66 or 133 MHz bus.
Function Jumper Setting
Normal Operation Short Pins 1-2
Force 1 MHz Short Pins 2-3
Jumper JP8: Set System Bus 133 MHz Forced
Use this jumper to set the system bus frequency. In the normal
setting, the system will automatically select the correct frequency
according to the kind of processor installed. In the Force 133 MHz
setting, the system will use a 133 MHz system bus even if the
processor is designed to operate with a 66 or 100 MHz bus.
Function Jumper Setting
Normal Operation Short Pins 1-2
Force 133 MHz Short Pins 2-3
Jumper JP17: USB2 Wake up Selector
Use this jumper to enable or disable the US 2 (extra US ports)
Wake up function that wake up the system from power saving
mode.
Function Jumper Setting
Disable Short Pins 1-2
Enable Short Pins 2-3
13

Mainboard User’s Manual
Jumper JP18: BIOS Write Protection Selector
Use this jumper to enable or disable the IOS write protection that
make the IOS read-only on the mainboard. You should disable
this jumper when you want to flash the IOS.
Function Jumper Setting
Disable Short Pins 1-2
Enable (read only) Short Pins 2-3
14

PWRFAN1
2: Mainboard Installation
Install the Mainboard
Install the mainboard in a system chassis (case). The board is an
Micro ATX size mainboard with a twin-tier of I/O ports. Ensure
that your case has an I/O cover plate that matches the ports on this
mainboard.
Install the mainboard in a case. Follow the instructions provided by
the case manufacturer using the hardware and internal mounting
points on the chassis.
Connect the power connector from the power supply to the ATX1
connector on the mainboard.
If there is a cooling fan installed in the system chassis, connect the
cable from the cooling fan to the PWRFAN1 fan power connector
on the mainboard.
Connect the case switches and indicator LEDs to the PANEL1
switch and LED connector header. See the illustration below for a
guide to the header pin assignments.
15
PAN L1
ATX1
22
21
Power L D
Pins 2-4-6
Speaker
Pins 1-3-5-7
Green L D
Pins 13-14
HDD L D
Pins 15-16
2
1
Reset Switch
Pins 17-18
Power Button
Pins 21-22
Suspend L D
Pins 19-20

Mainboard User’s Manual
Dual Color LED header
This JP16 header allows the user to install red and green LED
indicators to indicate when the computer is in Suspend to RAM
(STR) or normal. Although the values are not predefined, red
usually indicates STR and green indicates normal.
E tra IR/keyboard/mouse header
This mainboard provides second infrared, keyboard and mouse
header J2, giving the option of installing second infrared, keyboard
and mouse ports on the front panel. Depending on your case and
system configuration this connector may be more suitable as the
sole IR port connector.
E tra MIC/Line-out header
This J1 header allows the user to install auxiliary front-oriented
microphone and line-out ports for easier access.
16
JP16
1
J1 Header
J2 Header
1