775VM800 User Manual 1 11

775VM800

User Manual

Version 1.1

Published May 2005

Copyright©2005 ASRock INC. All rights reserved.

No part of this manual may be reproduced, transcribed, transmitted, or translated in any language, in any form or by any means, except duplication of documentation by the purchaser for backup purpose, without written consent of ASRock Inc.

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.

Specifications and information contained in this manual are furnished for informational use only and subject to change without notice, and should not be constructed as a commitment by ASRock. ASRock assumes no responsibility for any errors or omissions that may appear in this manual.

With respect to the contents of this manual, ASRock does not provide warranty of any kind, either expressed or implied, including but not limited to the implied warranties or conditions of merchantability or fitness for a particular purpose.

In no event shall ASRock, 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 data, interruption of business and the like), even if ASRock has been advised of the possibility of such damages arising from any defect or error in the manual or product.

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

(1) this device may not cause harmful interference, and

(2) this device must accept any interference received, including interference that may cause undesired operation.

ASRock Website: http://www.asrock.com

1.1 Package Contents .......................................................... 5

1.2 Specifications ................................................................ 6

1.3 Motherboard Layout ...................................................... 8

1.4 ASRock I/O Plus

TM

.................................................................................................

9

2.1 Screw Holes ................................................................. 10

2.2 Pre-installation Precautions ........................................... 10

2.3 CPU Installation .............................................................. 11

2.4 Installation of CPU Fan and Heatsink ............................ 13

2.5 Installation of Memory Modules (DIMM) ......................... 14

2.6 Expansion Slots (PCI, AMR, and AGP Slots) ................. 15

2.7 Jumpers Setup .............................................................. 16

2.8 Onboard Headers and Connectors .............................. 17

2.9 Serial ATA (SATA) Hard Disks Installation ..................... 20

2.10 Hot Plug and Hot Swap Functions for SATA HDDs .... 20

2.11 Installing Windows 2000 / XP / XP 64-bit With RAID

Functions ..................................................................... 21

2.12 Installing Windows 98 / ME / 2000 / XP / XP 64-bit

Without RAID Functions ............................................... 23

3. BIOS S ETUP UTILITY

3.1 Introduction .................................................................... 24

3.1.1 BIOS Menu Bar .................................................... 24

3.1.2 Navigation Keys ................................................... 25

3.2 Main Screen ................................................................... 25

3.3 Advanced Screen ......................................................... 25

3.3.1 CPU Configuration ................................................ 26

3.3.2 Chipset Configuration .......................................... 27

3.3.3 ACPI Configuration ............................................... 29

3.3.4 IDE Configuration ................................................. 30

3.3.5 PCIPnP Configuration ........................................... 32

3.3.6 Floppy Configuration ........................................... 32

3.3.7 Super IO Configuration ........................................ 33

3.3.8 USB Configuration ............................................... 34

3.4 Hardware Health Event Monitoring Screen .................. 35

3.5 Boot Screen ................................................................... 35

3.5.1 Boot Settings Configuration .................................. 36

3.6 Security Screen ............................................................ 37

3.7 Exit Screen .................................................................... 38

4.1 Install Operating System ............................................... 39

4.2 Support CD Information ................................................. 39

4.2.1 Running Support CD ............................................ 39

4.2.2 Drivers Menu ........................................................ 39

4.2.3 Utilities Menu ........................................................ 39

4.2.4 “LGA 775 CPU Installation Live Demo” Program.... 39

4.2.5 Contact Information .............................................. 39

Thank you for purchasing ASRock 775VM800 motherboard, a reliable motherboard produced under ASRock’s consistently stringent quality control. It delivers excellent performance with robust design conforming to ASRock’s commitment to quality and endurance.

In this manual, chapter 1 and 2 contain introduction of the motherboard and step-bystep guide to the hardware installation. Chapter 3 and 4 contain the configuration guide to BIOS setup and information of the Support CD.

Because the motherboard specifications and the BIOS software might be updated, the content of this manual will be subject to change without notice. In case any modifications of this manual occur, the updated version will be available on ASRock website without further notice. You may find the latest memory and CPU support lists on ASRock website as well. ASRock website http://www.asrock.com

ASRock 775VM800 Motherboard

(Micro ATX Form Factor: 9.6-in x 8.2-in, 24.4 cm x 20.8 cm)

ASRock 775VM800 Quick Installation Guide

ASRock 775VM800 Support CD

(including LGA 775 CPU Installation Live Demo)

One 80-conductor Ultra ATA 66/100/133 IDE Ribbon Cable

One Ribbon Cable for a 3.5-in Floppy Drive

One Serial ATA (SATA) Cable

One Serial ATA (SATA) HDD Power Cable(Optional)

One ASRock I/O Plus TM Shield

One COM Port Bracket

Platform:

Micro ATX Form Factor: 9.6-in x 8.2-in, 24.4 cm x 20.8 cm

CPU: 775-Pin Socket

supporting Intel ® 840EE / Pentium ® D / Pentium ® 4 / Celeron ® D

processor (in 775-land LGA package)

Chipsets:

North Bridge:

VIA P4M800 CE, FSB @ 800/533 MHz, with Intel ® Hyper-Threading Technology ready

(see CAUTION 1)

South Bridge:

VIA VT8237R, supports USB 2.0, ATA 133, SATA 1.5Gb/s

Memory:

IDE:

Serial ATA:

2 DDR DIMM Slots: DDR1 and DDR2

1 DDR DIMM Slot Supports PC3200 (DDR400), Max. 1GB,

2 DDR DIMM Slots Supports PC2700 (DDR333) /

PC2100 (DDR266), Max. 2GB

IDE1: ATA 133 / Ultra DMA Mode 6

IDE2: ATA 133 / Ultra DMA Mode 6

Supports up to 4 IDE devices

2 SATA connectors

Floppy Port:

Audio:

OnBoard VGA:

Support up to 1.5Gb/s data transfer rate

Supports up to 2 floppy disk drives

5.1 channels AC’97 Audio

Integrated S3 UniChrome Pro 3D/2D Graphics,

LAN:

supports DX7 H / W

Speed: 802.3u (10/100 Ethernet), supports Wake-On-LAN

Hardware Monitor: CPU temperature sensing

Chassis temperature sensing

CPU overheat shutdown to protect CPU life

PCI slots:

AGP slot:

AMR slot:

USB 2.0:

(ASRock U-COP)(see CAUTION 2)

CPU fan tachometer

Chassis fan tachometer

Voltage monitoring: +12V, +5V, +3.3V, Vcore

3 slots with PCI Specification 2.2, PCI3 slot shared with AMR

1 AGP slot, supports 1.5V, 8X/4X AGP card (see CAUTION 3)

1 slot, supports ASRock MR card

8 USB 2.0 ports: include 6 ready-to-use USB 2.0 ports on the rear panel, plus two on-board headers supporting 2 extra USB 2.0 ports

(see CAUTION 4)

ASRock I/O Plus

TM

: 1 PS/2 mouse port, 1 PS/2 keyboard port,

1 VGA port,

1 parallel port: ECP/EPP support,

BIOS:

6 ready-to-use USB 2.0 ports,

1 RJ 45 port,

Audio Jack: Line In / Line Out / Microphone

AMI BIOS

OS:

Supports “Plug and Play”

ACPI 1.1 compliance wake up events

Supports jumperfree

SMBIOS 2.3.1 support

CPU frequency stepless control

(only for advanced users’ reference, see CAUTION 5)

Microsoft

®

Windows

®

98SE / ME / 2000 / XP compliant

CAUTION!

1.

About the setting of “Hyper Threading Technology”, please check page 27.

2.

While CPU overheat is detected, the system will automatically shutdown.

Before you resume the system, please check if the CPU fan on the motherboard functions properly and unplug the power cord, then plug it back again. To improve heat dissipation, remember to spray thermal grease between the CPU and the heatsink when you install the PC system.

3.

Do NOT use a 3.3V AGP card on the AGP slot of this motherboard!

It may cause permanent damage!

4.

Power Management for USB 2.0 works fine under Microsoft

®

Windows

®

XP

SP1 / 2000 SP4. It may not work properly under Microsoft ® Windows ® 98 /

ME.

5.

Although this motherboard offers stepless control, it is not recommended to perform over-clocking. Frequencies other than the recommended CPU bus frequencies may cause the instability of the system or damage the

CPU.

1 2 3 4

20.8cm (8.2 in)

5

6 7

PS2

Mouse

ATX12V1

8

29

28

27

26

25

24

23

22

21

20

USB 2.0

T: USB2

B: USB3

USB 2.0

T: USB0

B: USB1

Top:

RJ-45

USB 2.0

T: USB4

B: USB5

1

IR1

LAN

PHY

4Mb

BIOS

AUX1 CD1

Audio

CODEC

1

AUDIO1

JR1 JL1

PCI 1

775VM800

PCI 2

5.1CH

AMR1

USB2.0

PCI 3

FLOPPY1

19 18

VIA

P4M800

Chipset

AGP 8X

1.5V_AGP1

CLRCMOS1

CMOS

Battery

VIA

VT8237R

1

USB67

PANEL 1

PLED PWRBTN

1

SPEAKER1

1

HDLED RESET

SATA2 SATA1

17 16 15

IDE2

IDE1

SATA

14 13

9

10

11

12

6

7

4

5

1

2

3

8

9

10

11

12

13

14

PS2_USB_PWR1 Jumper

ATX 12V Connector (ATX12V1)

ATX Power Connector (ATXPWR1)

16 Chassis Speaker Header (SPEAKER 1)

17 USB 2.0 Header (USB67, Blue)

18 Floppy Connector (FLOPPY1)

Chassis Fan Connector (CHA_FAN1)

775-Pin CPU Socket

19 AMR Slot (AMR1)

20 JR1 / JL1 Jumpers

North Bridge Controller 21 Front Panel Audio Header (AUDIO1)

2 x 184-pin DDR DIMM Slots (DDR1, DDR2; Blue) 22 Internal Audio Connector: CD1 (Black)

Secondary IDE Connector (IDE2, Black)

Primary IDE Connector (IDE1, Blue)

AGP Slot (1.5V_AGP1)

Clear CMOS Jumper (CLRCMOS1)

South Bridge Controller

Primary Serial ATA Connector (SATA1)

Secondary Serial ATA Connector (SATA2)

15 System Panel Header (PANEL1)

23 Internal Audio Connector: AUX1 (White)

24 3 x PCI Slots (PCI1- 3)

25 Flash Memory

26 Infrared Module Header (IR1)

27 Serial Port Connector (COM1)

28 Shared USB 2.0 Header (USB4_5, Blue)

29 CPU Fan Connector (CPU_FAN1)

1.4 ASRock I/O Plus

TM

1 2

11 10 9

1 Parallel Port

2 RJ-45 Port

3 Line In (Light Blue)

4 Line Out (Lime)

5 Microphone (Pink)

6 Shared USB 2.0 Ports (USB45)

8 7 6

7

8

9

USB 2.0 Ports (USB01)

USB 2.0 Ports (USB23)

VGA Port

10 PS/2 Keyboard Port (Purple)

11 PS/2 Mouse Port (Green)

3

4

5

775VM800 is a Micro ATX form factor (9.6" x 8.2", 24.4 x 20.8 cm) motherboard.

Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it.

Make sure to unplug the power cord before installing or removing the motherboard. Failure to do so may cause physical injuries to you and damages to motherboard components.

Place screws into the holes indicated by circles to secure the motherboard to the chassis.

Do not over-tighten the screws! Doing so may damage the motherboard.

Take note of the following precautions before you install motherboard components or change any motherboard settings.

1.

Unplug the power cord from the wall socket before touching any component.

2.

To avoid damaging the motherboard components due to static electricity, NEVER place your motherboard directly on the carpet or the like. Also remember to use a grounded wrist strap or touch a safety grounded object before you handle components.

3.

Hold components by the edges and do not touch the ICs.

4.

Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that comes with the component.

Before you install or remove any component, ensure that the power is

switched off or the power cord is detached from the power supply.

Failure to do so may cause severe damage to the motherboard, peripherals,

and/or components.

For the installation of Intel 775-LAND CPU, please follow the steps below.

775-Pin Socket Overview

Before you insert the 775-LAND CPU into the socket, please check if the CPU surface is unclean or if there is any bent pin on the socket.

Do not force to insert the CPU into the socket if above situation is found. Otherwise, the CPU will be seriously damaged.

Step 1. Open the socket:

Step 1-1. Disengaging the lever by depressing down and out on the hook to clear retention tab.

Step 1-2. Rotate the load lever to fully open position at approximately 135 degrees.

Step 1-3. Rotate the load plate to fully open position at approximately 100 degrees.

Step 2. Insert the 775-LAND CPU:

Step 2-1. Hold the CPU by the edges where are marked with black lines.

Pin1

Step 2-2. Orient the CPU with IHS (Integrated

Heat Sink) up. Locate Pin1 and the two orientation key notches.

Pin1 alignment key orientation key notch orientation key notch

775-Pin Socket alignment key

775-LAND CPU

For proper inserting, please ensure to match the two orientation key notches of the CPU with the two alignment keys of the socket.

Step 2-3. Carefully place the CPU into the socket by using a purely vertical motion.

Step 2-4. Verify that the CPU is within the socket and properly mated to the orient keys.

Step 3. Remove PnP Cap (Pick and Place Cap):

Use your left hand index finger and thumb to support the load plate edge, engage PnP cap with right hand thumb and peel the cap from the socket while pressing on center of PnP cap to assist in removal.

It is recommended to use the cap tab to handle and avoid kicking off the PnP cap.

Step 4. Close the socket:

Step 4-1. Rotate the load plate onto the IHS.

Step 4-2. While pressing down lightly on load plate, engage the load lever.

Step 4-3. Secure load lever with load plate tab under retention tab of load lever.

2.4

Installation of CPU Fan and Heatsink

This motherboard is equipped with 775-Pin socket that supports Intel 775-LAND CPU.

Please adopt the type of heatsink and cooling fan compliant with Intel 775-LAND CPU to dissipate heat. Before you installed the heatsink, you need to spray thermal interface material between the CPU and the heatsink to improve heat dissipation.

Ensure that the CPU and the heatsink are securely fastened and in good contact with each other. Then connect the CPU fan to the CPU_FAN connector (CPU_FAN1, see page 8, No. 29).

For proper installation, please kindly refer to the instruction manuals of your CPU fan and heatsink.

Below is an example to illustrate the installation of the heatsink for 775-LAND CPU.

Step 1.

Apply thermal interface material onto center of IHS on the socket surface.

Step 2.

Place the heatsink onto the socket. Ensure fan cables are oriented on side closest to the

CPU fan connector on the motherboard

(CPU_FAN1, see page 8, No. 29).

Step 3.

Align fasteners with the motherboard throughholes.

Step 4.

Rotate the fastener clockwise, then press down on fastener caps with thumb to install and lock. Repeat with remaining fasteners.

If you press down the fasteners without rotating them clockwise, the heatsink cannot be secured on the motherboard.

Step 5.

Connect fan header with the CPU fan connector on the motherboard.

Step 6.

Secure excess cable with tie-wrap to ensure cable does not interfere with fan operation or contact other components.

775VM800 motherboard provides two 184-pin DDR (Double Data Rate) DIMM slots.

Please make sure to disconnect power supply before adding or removing

DIMMs or the system components.

Step 1.

Unlock a DIMM slot by pressing the retaining clips outward.

Step 2.

Align a DIMM on the slot such that the notch on the DIMM matches the break on the slot.

notch break notch break

The DIMM only fits in one correct orientation. It will cause permanent damage to the motherboard and the DIMM if you force the DIMM into the slot at incorrect orientation.

Step 3.

Firmly insert the DIMM into the slot until the retaining clips at both ends fully snap back in place and the DIMM is properly seated.

There are 3 PCI slots, 1 AMR slot, and 1 AGP slot on 775VM800 motherboard.

PCI slots: PCI slots are used to install expansion cards that have the 32-bit PCI interface.

AMR slot: The AMR slot is used to insert an ASRock MR card with v.92 Modem functionality.

AGP slot: The AGP slot is used to install a graphics card. The ASRock AGP slot has a special design of clasp that can securely fasten the inserted graphics card.

Please do NOT use a 3.3V AGP card on the AGP slot of this motherboard!

It may cause permanent damage! For the voltage information of your

AGP card, please check with the AGP card vendors.

Step 1.

Before installing the expansion card, please make sure that the power supply is switched off or the power cord is unplugged. Please read the documentation of the expansion card and make necessary hardware settings for the card before you start the installation.

Step 2.

Remove the system unit cover (if your motherboard is already installed in a chassis).

Step 3.

Remove the bracket facing the slot that you intend to use. Keep the screws for later use.

Step 4.

Align the card connector with the slot and press firmly until the card is completely seated on the slot.

Step 5.

Fasten the card to the chassis with screws.

Step 6.

Replace the system cover.

The illustration shows how jumpers are setup. When the jumper cap is placed on pins, the jumper is “Short”. If no jumper cap is placed on pins, the jumper is “Open”. The illustration shows a 3-pin jumper whose pin1 and pin2 are “Short” when jumper cap is placed on these 2 pins.

Short

Open

Jumper

PS2_USB_PWR1

(see p.8, No. 1)

1_2

Setting

2_3

Short pin2, pin3 to enable

+5VSB (standby) for PS/2

+5V

+5VSB

or USB wake up events.

Note: To select +5VSB, it requires 2 Amp and higher standby current provided by power supply.

JR1

(see p.8, No. 20)

JL1

(see p.8, No. 20) JR1 JL1

Note: If the jumpers JL1 and JR1 are short, both the front panel and the rear panel audio connectors can work.

Clear CMOS

(CLRCMOS1, 2-pin jumper)

(see p.8, No. 11)

2-pin jumper

Note: CLRCMOS1 allows you to clear the data in CMOS. The data in CMOS includes system setup information such as system password, date, time, and system setup parameters. To clear and reset the system parameters to default setup, please turn off the computer and unplug the power cord from the power supply. After waiting for 15 seconds, use a jumper cap to short 2 pins on

CLRCMOS1 for 5 seconds. However, please do not clear the CMOS right after you update the BIOS. If you need to clear the CMOS when you just finish updating the BIOS, you must boot up the system first, and then shut it down before you do the clear-CMOS action.

Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over these headers and connectors. Placing jumper caps over the headers and connectors will cause permanent damage of the motherboard!

FDD Connector

(33-pin FLOPPY1)

(see p.8, No. 18)

Pin1

FLOPPY1 the red-striped side to Pin1

Note: Make sure the red-striped side of the cable is plugged into Pin1 side of the connector.

Primary IDE Connector (Blue) Secondary IDE Connector (Black)

(39-pin IDE1, see p.8, No. 9) (39-pin IDE2, see p.8, No. 8)

PIN1

IDE1

PIN1

IDE2 connect the blue end to the motherboard

80-conductor ATA 66/100/133 cable connect the black end to the IDE devices

Note: If you use only one IDE device on this motherboard, please set the IDE device as “Master”. Please refer to the instruction of your IDE device vendor for the details. Besides, to optimize compatibility and performance, please connect your hard disk drive to the primary IDE connector (IDE1, blue) and

CD-ROM to the secondary IDE connector (IDE2, black).

Serial ATA Connectors

(SATA1: see p.8, No. 13)

(SATA2: see p.8, No. 14)

SATA2 SATA1

Serial ATA (SATA)

Data Cable

These two Serial ATA (SATA) connectors support SATA data cables for internal storage devices. The current SATA interface allows up to 1.5 Gb/s data transfer rate.

Either end of the SATA data cable can be connected to the

SATA hard disk or the SATA connector on the motherboard.

Serial ATA (SATA)

Power Cable

(Optional) connect to the SATA HDD power connector connect to the power supply

Please connect the black end of

SATA power cable to the power connector on the drive. Then connect the white end of SATA power cable to the power connector of the power supply.

USB 2.0 Header

(9-pin USB67)

(see p.8, No. 17)

USB_PWR

P-7

DUMMY

1

GND

P+6

P-6

USB_PWR

ASRock I/O Plus

TM

provides you

6 ready-to-use USB 2.0 ports on the rear panel. If the rear USB ports are not sufficient, this

USB 2.0 header is available to support 2 extra USB 2.0 ports.

Shared USB 2.0 Header

(9-pin USB4_5)

(see p.8, No. 28)

USB_PWR

P-5

P+5

GND

1

USB_PWR

P-4

P+4

GND

DUMMY

Infrared Module Header

(5-pin IR1)

(see p.8, No. 26)

1

IRTX

DUMMY

This USB4_5 connector is shared with the USB 2.0 ports 4,5 on

ASRock I/O Plus TM . When using the front panel USB ports by attaching the front panel USB cable to this connector

(USB4_5), the USB ports 4,5 on

ASRock I/O Plus TM will not be able to function.

This header supports an optional wireless transmitting and receiving infrared module.

Internal Audio Connectors

(4-pin CD1, 4-pin AUX1)

(CD1: see p.8, No. 22)

AUX-R

GND

GND

AUX-L

(AUX1: see p.8, No. 23)

AUX1

Front Panel Audio Header

(9-pin AUDIO1)

(see p.8, No. 21)

CD-R

GND

GND

CD-L

CD1

These connectors allow you to receive stereo audio input from sound sources such as a CD-ROM, DVD-ROM, TV tuner card, or MPEG card.

GND

+5VA

BACKOUT-R

BACKOUT-L

1

AUD-OUT-R

MIC-POWER

MIC

AUD-OUT-L

GND

This is an interface for the front panel audio cable that allows convenient connection and control of audio devices.

System Panel Header

(9-pin PANEL1)

(see p.8, No. 15)

Chassis Speaker Header

(4-pin SPEAKER 1)

(see p.8, No. 16)

PLED+

PLED-

PWRBTN#

GND

1

RESET#

GND

DUMMY

HDLED-

HDLED+

1

SPEAKER

DUMMY

+5V

DUMMY

This header accommodates several system front panel functions.

Please connect the chassis speaker to this header.

Chassis Fan Connector

(3-pin CHA_FAN1)

(see p.8, No. 4)

CPU Fan Connector

(4-pin CPU_FAN1)

(see p.8, No. 29)

ATX Power Connector

(20-pin ATXPWR1)

(see p.8, No. 3)

N/C

CPU_FAN_SPEED

+12V

GND

GND

+12V

CHA_FAN_SPEED

Please connect the chassis fan cable to this connector and match the black wire to the ground pin.

Please connect the CPU fan cable to this connector and match the black wire to the ground pin.

Please connect an ATX power supply to this connector.

ATX 12V Connector

(4-pin ATX12V1)

(see p.8, No. 2)

Please note that it is necessary to connect a power supply with

ATX 12V plug to this connector so that it can provides sufficient power. Failing to do so will cause the failure to power up.

Please install the heatsink and the CPU fan before installing ATX 12V connector; otherwise, it may cause permanent damage!

Serial port connector

(9-pin COM1)

(see p.8 item 27)

RRXD1

DDTR#1

DDSR#1

CCTS#1

1

RRI#1

RRTS#1

GND

TTXD1

DDCD#1

This COM1 connector supports a serial port module.

This motherboard adopts VIA VT8237R southbridge chipset that supports Serial

ATA (SATA) hard disks and RAID functions. You may install SATA hard disks on this motherboard for internal storage devices. This section will guide you to install the SATA hard disks.

STEP 1: Install the SATA hard disks into the drive bays of your chassis.

STEP 2: Connect the SATA power cable to the SATA hard disk.

STEP 3: Connect one end of the SATA data cable to the motherboard’s SATA connector.

STEP 4: Connect the other end of the SATA data cable to the SATA hard disk.

2.10 Hot Plug and Hot Swap F unctions for SA

775VM800 motherboard supports Hot Plug and Hot Swap functions for

SATA Devices.

NOTE

What is Hot Plug Function?

If the SATA HDDs are NOT set for RAID configuration, it is called “Hot

Plug” for the action to insert and remove the SATA HDDs while the system is still power-on and in working condition.

However, please note that it cannot perform Hot Plug if the OS has been installed into the SATA HDD.

What is Hot Swap Function?

If SATA HDDs are built as RAID1 then it is called “Hot Swap” for the action to insert and remove the SATA HDDs while the system is still power-on and in working condition.

If you want to install Windows 2000 / Windows XP / Windows XP-64bit OS on your system with RAID functions, please follow the below steps.

STEP 1: Make a SATA Driver Diskette.

A. Insert the ASRock Support CD into your optical drive to boot

your system.

B. During POST at the beginning of system boot-up, press <F11>

key, and then a window for boot devices selection appears.

Please select CD-ROM as the boot device.

C. When you see the message on the screen, “Do you want to

generate Serial ATA driver diskette [YN]?”, press <Y>.

D. Then you will see these messages,

Please insert a diskette into the floppy drive.

WARNING! Formatting the floppy diskette will lose ALL data in it!

Start to format and copy files [YN]?

Please insert a floppy diskette into the floppy drive, and press

<Y>.

E. The system will start to format the floppy diskette and copy

SATA drivers into the floppy diskette.

STEP 2: Use “SATA RAID BIOS” to set RAID configuration.

Before you start to configure the RAID function, you need to check the installation guide in the Support CD for proper configuration.

Please refer to the document in the Support CD, “Guide to SATA

Hard Disks Installation and RAID Configuration”, which is located in the folder at the following path: .. \ SATA RAID BIOS

STEP 3: Install Windows 2000 / Windows XP / Windows XP 64-bit OS on your system.

After making a SATA driver diskette and using “SATA RAID BIOS” to set RAID configuration, you can start to install Windows 2000 /

Windows XP / Windows XP 64-bit on your system.

After the installation of Windows 2000 / Windows XP / Windows XP 64-bit OS, if you want to manage RAID functions, you are allowed to use both “SATA RAID

BIOS” and “VIA RAID Tool” for RAID configuration. Please refer to the document in the Support CD, “Guide to SATA Hard Disks Installation and RAID Configuration”, which is located in the folder at the following path: .. \ SATA RAID BIOS and the document in the support CD, “Guide to VIA RAID Tool”, which is located in the folder at the following path: .. \ VIA RAID Tool

1. Windows 98 / Windows ME does not support RAID functions.

2. If you want to use “VIA RAID Tool” in Windows environment, please install

SATA drivers from the Support CD again so that “VIA RAID Tool” will be

installed to your system as well.

If you want to install Windows 98 / ME / 2000 / XP / XP 64-bit on your SATA HDDs without RAID functions or you want to install Windows 98 / ME / 2000 / XP / XP

64-bit on your IDE HDDs instead of SATA HDDs, please follow the below steps.

If you want to install Windows 98 / Windows ME on your SATA HDDs without

RAID functions, you don’t have to set up BIOS. Please install Windows 98 /

Windows ME OS on your system directly.

STEP 1: Set Up BIOS. (Only for Windows 2000 / XP / XP 64-bit)

A. Enter BIOS SETUP UTILITY¡÷ Advanced screen¡÷ IDE Configuration.

B. Set the “SATA Operation Mode” option from [RAID] to [non-RAID].

STEP 2: Install Windows 98 / ME / 2000 / XP / XP 64-bit OS on your system.

After setting up BIOS, you can start to install Windows 98 / ME / 2000 /

XP / XP 64-bit on your system.

If you don’t want to set up RAID functions, there is no need to make a SATA driver diskette.

This section explains how to use the BIOS SETUP UTILITY to configure your system.

The Flash Memory on the motherboard stores the BIOS SETUP UTILITY. You may run the BIOS SETUP UTILITY when you start up the computer. Please press <F2> during the Power-On-Self-Test (POST) to enter the BIOS SETUP UTILITY, otherwise, POST will continue with its test routines.

If you wish to enter the BIOS SETUP UTILITY after POST, restart the system by pressing <Ctl> + <Alt> + <Delete>, or by pressing the reset button on the system chassis. You may also restart by turning the system off and then back on.

Because the BIOS software is constantly being updated, the following

BIOS setup screens and descriptions are for reference purpose only, and they may not exactly match what you see on your screen.

The top of the screen has a menu bar with the following selections:

Main

To set up the system time/date information

Advanced

To set up the advanced BIOS features

H/W Monitor To display current hardware status

Boot

To set up the default system device to locate and load the

Operating System

Security

Exit

To set up the security features

To exit the current screen or the BIOS SETUP UTILITY

Use < > key or < > key to choose among the selections on the menu bar, and then press <Enter> to get into the sub screen.

Please check the following table for the function description of each navigation key.

Navigation Key(s) Function Description

/

Moves cursor left or right to select Screens

/

+ / -

Moves cursor up or down to select items

To change option for the selected items

<Enter>

<F1>

<F9>

<F10>

<ESC>

To bring up the selected screen

To display the General Help Screen

To load optimal default values for all the settings

To save changes and exit the BIOS SETUP UTILITY

To jump to the Exit Screen or exit the current screen

When you enter the BIOS SETUP UTILITY, the Main screen will appear and display the system overview

Main

Advanced

BIOS SETUP UTILITY

H/W Monitor Boot

System Overview

System Time

System Date

[ 17 :00:09]

[Wed 04/20/2005]

BIOS Version

Processor Type

Processor Speed

Cache Size

Microcode Update

: 775VM800 BIOS P1.00

: Intel (R) CPU 3.20 GHz

: 3200 MHz

: 1024KB

: 0F34/0E

Total Memory

DIMM 1

DIMM 2

: 256MB with 64MB shared memory

: 256MB/166MHz (DDR333)

: None

Security Exit

Use [Enter], [TAB] or [SHIFT-TAB] to select a field.

Use [+] or [-] to configure system Time.

+-

Tab

F1

F9

F10

ESC

Select Screen

Select Item

Change Field

Select Field

General Help

Load Defaults

Save and Exit

Exit v02.54 (C) Copyright 1985-2003, American Megatrends, Inc.

System Time [Hour:Minute:Second]

Use this item to specify the system time.

System Date [Day Month/Date/Year]

Use this item to specify the system date.

In this section, you may set the configurations for the following items: CPU

Configuration, Chipset Configuration, ACPI Configuration, IDE Configuration, PCIPnP

Configuration, Floppy Configuration, SuperIO Configuration, and USB Configuration.

Main Advanced


H/W Monitor Boot Security

Configure CPU

Exit

Advanced Settings

WARNING : Setting wrong values in below sections may cause system to malfunction.

CPU Configuration

Chipset Configuration

ACPI Configuration

IDE Configuration

PCIPnP Configuration

Floppy Configuration

SuperIO Configuration

USB Configuration

Select Screen

Select Item

Enter Go to Sub Screen

F1 General Help

F9

F10

Load Defaults

Save and Exit

ESC Exit v02.54 (C) Copyright 1985-2003, American Megatrends, Inc.

Setting wrong values in this section may cause the system to malfunction.


Advanced

CPU Configuration

CPU Host Frequency

Actual Frequency (MHz)

Boot Failure Guard

Spread Spectrum

Ratio Status

Ratio Actual Value

CPU Thermal Throttling

Hyper Threading Technology

Max CPUID Value Limit

No-Excute Memory Protection

[Auto]

[200]

[Enabled]

[Auto]

: Locked

: 16

[Enabled]

[Auto]

[Disabled]

[Disabled]

Select how to set the

CPU host frequency.


CPU Host Frequency

While entering setup, BIOS auto detects the present CPU host frequency of this motherboard. The actual CPU host frequency will show in the following item.

Boot Failure Guard

Enable or disable the feature of Boot Failure Guard.

Spread Spectrum

Select [Auto] for the spread spectrum feature.

Ratio Status

This is a read-only item, which displays whether the ratio status of this

motherboard is “Locked” or “Unlocked”. If it shows “Unlocked”, you will find

an item Ratio CMOS Setting appears to allow you changing the ratio

value of this motherboard. If it shows “Locked”, then the item Ratio CMOS

Setting will be hidden. If you use the ratio value to time the CPU frequency,

it will be equal to the core speed of the installed processor.

Ratio Actual Value

This is a read-only item, which displays the ratio actual value of this motherboard.

CPU Thermal Throttling

You may select [Enabled] to enable P4 CPU internal thermal control mechanism to keep the CPU from overheated.

Hyper Threading Technology

To enable this feature, it requires a computer system with an Intel Pentium ® 4 processor that supports Hyper-Threading technology and an operating system that includes optimization for this technology, such as Microsoft ® Windows ® XP. Set to [Auto] if using Microsoft ® Windows ® XP, or Linux kernel version 2.4.18 or higher. This option will be hidden if the installed CPU does not support Hyper-Threading technology.

Max CPUID Value Limit

For Prescott CPU only, some OSes (ex. NT4.0) cannot handle the function with disable. This should be enabled in order to boot legacy OSes that cannot support CPUs with extended CPUID functions.

No-Excute Memory Protection

No-Execution (NX) Memory Protection Technology is an enhancement to the

IA-32 Intel Architecture. An IA-32 processor with “No Execute (NX) Memory

Protection” can prevent data pages from being used by malicious software

to execute code. This option will be hidden if the current CPU does not

support No-Excute Memory Protection.


Advanced

Chipset Configuration

DRAM Frequency

Flexibility Option

DRAM CAS# Latency

DRAM Command Rate

DRAM Voltage

AGP Voltage

Primary Graphics Adapter

AGP Aperture Size

AGP Mode

AGP Fast Write

Onboard AGP Share Memory

PCI Delay Transaction

OnBoard LAN

OnBoard AC'97 Audio

Onboard MC'97 Modem

[Auto]

[Disabled]

[Auto]

[2T Command]

[Auto]

[Auto]

[PCI]

[64MB]

[Auto]

[Disabled]

[Auto]

[Disabled]

[Eabled]

[Auto]

[Auto]

Options

133MHz (DDR266)

166MHz (DDR333)

200MHz (DDR400)

Auto

+ -

F1

Select Screen

Select Item

Change Option

General Help

F9 Load Defaults

F10 Save and Exit


DRAM Frequency

If [Auto] is selected, the motherboard will detect the memory module(s) inserted and assigns appropriate frequency automatically. You may also select other value as operating frequency: [133MHz (DDR 266)],

[166MHz (DDR 333)], [200MHz (DDR 400)].

Flexibility Option

The default value of this option is [Disabled]. It will allow better tolerance for memory compatibility when it is set to [Enabled].

DRAM CAS# Latency

Use this item to adjust the means of memory accessing. Configuration options: [Auto], [2.5], [2], and [3].

DRAM Command Rate

Use this to select among [2T Command] and [1T Command] for DRAM

Command Rate. The default value is [2T Command].

DRAM Voltage

The default value of this feature is set to [Auto].

AGP Voltage

The default value of this feature is set to [Auto].

Primary Graphics Adapter

This allows you to select [PCI] or [AGP] as the primary graphics adapter.

The default vaule is [PCI].

AGP Aperture Size

It refers to a section of the PCI memory address range used for graphics memory. It is recommended to leave this field at the default value unless the installed AGP card’s specifications requires other sizes.

AGP Mode

The default value of this feature is set to [Auto]. If you install an 8X-AGP card on this motherboard, you may select [Auto], [8X] or [4X] as the AGP mode. If the installed AGP card is a 4X-AGP card, then you may set the AGP mode as [Auto], [4X], [2X], or [1X].

AGP Fast Write

This allows you to enable or disable the feature of AGP fast write protocol support.

Onboard AGP Share Memory

You may select [Auto], [8MB], [16MB], [32MB], or [64MB] as the Onboard

AGP share Memory. The default value of this feature is set to [Auto]. When the total memory is equal or above 256MB, the share memory size will be

[64MB]; otherwise, please set the share memory size to [32MB].

PCI Delay Transaction

Enable PCI Delay Transaction feature will free the PCI Bus when the CPU is accessing 8-bit ISA cards. Disable this feature when using ISA cards that are not PCI 2.1 compliant.

OnBoard LAN

This allows you to enable or disable the onboard LAN feature.

OnBoard AC’97 Audio

Select [Auto], [Enabled], or [Disabled] for the onboard AC’97 Audio feature.

OnBoard MC’97 Modem

Select [Auto] or [Disabled] for the onboard MC’97 Modem feature.


Advanced

ACPI Configuration

Suspend To RAM

Restore on AC / Power Loss

Ring-In Power On

PCI Devices Power On

PS / 2 Keyboard Power On

RTC Alarm Power On

[Disabled]

[Power Off]

[Disabled]

[Disabled]

[Disabled]

[Disabled]

Select auto-detect or disable the STR feature.

+-

F1

F9

F10

ESC

Select Screen

Select Item

Change Option

General Help

Load Defaults

Save and Exit


Restore on AC/Power Loss

Use this item to set the power state after an unexpected AC/power loss. If

[Power Off] is selected, the AC/power remains off when the power recovers. If [Power On] is selected, the AC/power resumes and the system starts to boot up when the power recovers.

Ring-In Power On

Use this item to enable or disable Ring-In signals to turn on the system from the power-soft-off mode.

PCI Devices Power On

Use this item to enable or disable PCI devices to turn on the system from the power-soft-off mode.

PS/2 Keyboard Power On

Use this item to enable or disable PS/2 keyboard to turn on the system from the power-soft-off mode.

RTC Alarm Power On

Use this item to enable or disable RTC (Real Time Clock) to power on the system.

Advanced

IDE Configuration

OnBoard IDE Controller

SATA Operation Mode

Primary IDE Master

Primary IDE Slave

Secondary IDE Master

Secondary IDE Slave

SATA1

SATA2


[Both]

[RAID]

[Hard Disk]

[Not Detected]

[Not Detected]

[Not Detected]

[Not Detected]

[Not Detected]

DISABLED: disables the integrated IDE

Controller.

PRIMARY: enables only the Primary IDE

Controller.

SECONDARY: enables only the Secondary IDE

Controller.

BOTH: enables both IDE

Controllers.

v02.54 (C) Copyright 1985-2003, American Megatrends, Inc.

OnBoard IDE Controller

You may enable either the primary IDE channel or the secondary IDE channel.

Or you may enable both the primary and the secondary IDE channels by selecting [Both]. Set to [Disabled] will disable the both. Configuration options:

[Disabled], [Primary], [Secondary], [Both].

SATA Operation Mode

Use this item to adjust SATA Operation Mode. The default value of this option is [RAID]. If you don’t want to operate RAID function on SATA HDDs, please select [non-RAID], but if you want to install Windows 98 / ME on

SATA HDDs without RAID functions, please select [RAID].

IDE Device Configuration

You may set the IDE configuration for the device that you specify. We will use the “Primary IDE Master” as the example in the following instruction, which can be applied to the configurations of “Primary IDE Slave”, “Secondary IDE Master”, and “Secondary IDE Slave” as well.


Advanced

Primary IDE Master

Device

Vendor

Size

LBA Mode

Block Mode

PIO Mode

Async DMA

Ultra DMA

S.M.A.R.T.

Type

LBA/Large Mode

Block (Multi-Sector Transfer)

PIO Mode

DMA Mode

S . M . A . R . T .

32Bit Data Transfer

:Hard Disk

:ST340014A

:40.0 GB

:Supported

:16Sectors

:4

:MultiWord DMA-2

:Ultra DMA-5

:Supported

[Auto]

[Auto]

[Auto]

[Auto]

[Auto]

[Disabled]

[Disabled]

Select the type of device connected to the system.

+-

F1

F9

F10

ESC

Select Screen

Select Item

Change Option

General Help

Load Defaults

Save and Exit


TYPE

Use this item to configure the type of the IDE device that you specify.

Configuration options: [Not Installed], [Auto], [CD/DVD], and [ARMD].

[Not Installed]: Select [Not Installed] to disable the use of IDE device.

[Auto]: Select [Auto] to automatically detect the hard disk drive.

After selecting the hard disk information into BIOS, use a disk utility, such as FDISK, to partition and format the new IDE hard disk drives. This is necessary so that you can write or read data from the hard disk. Make sure to set the partition of the

Primary IDE hard disk drives to active.

[CD/DVD]: This is used for IDE CD/DVD drives.

[ARMD]: This is used for IDE ARMD (ATAPI Removable Media Device), such as MO.

LBA/Large Mode

Use this item to select the LBA/Large mode for a hard disk > 512 MB under

DOS and Windows; for Netware and UNIX user, select [Disabled] to disable the LBA/Large mode.

Block (Multi-Sector Transfer)

The default value of this item is [Auto]. If this feature is enabled, it will enhance hard disk performance by reading or writing more data during each transfer.

PIO Mode

Use this item to set the PIO mode to enhance hard disk performance by optimizing the hard disk timing.

DMA Mode

DMA capability allows the improved transfer-speed and data-integrity for compatible IDE devices.

S.M.A.R.T.

Use this item to enable or disable the S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) feature. Configuration options: [Disabled], [Auto],

[Enabled].

32-Bit Data Transfer

Use this item to enable 32-bit access to maximize the IDE hard disk data transfer rate.

Advanced

PCI / PnP Configuration

PCI Latency Timer

PCI IDE BusMaster


[32]

[Enabled]

Value in units of PCI clocks for PCI device latency timer register.

Select Screen

Select Item

+-

F1

F9

F10

Change Option

General Help

Load Defaults

Save and Exit


PCI Latency Timer

The default value is 32. It is recommended to keep the default value unless the installed PCI expansion cards’ specifications require other settings.

PCI IDE BusMaster

Use this item to enable or disable the PCI IDE BusMaster feature.

In this section, you may configure the type of your floppy drive.


Advanced

Floppy Configuration

Floppy A

Floppy B [Disabled]

Select the type of floppy drive connected to the system.

+-

F1

F9

F10

ESC

Select Screen

Select Item

Change Option

General Help

Load Defaults

Save and Exit



Advanced

Configure Super IO Chipset

OnBoard Floppy Controller

Serial Port Address

Infrared Port Address

Parallel Port Address

Parallel Port Mode

EPP Version

ECP Mode DMA Channel

Parallel Port IRQ

[Enabled]

[3F8 / IRQ4]

[Disabled]

[378]

[ECP + EPP]

[1.9]

[DMA3]

[IRQ7]

Allow BIOS to Enable or Disable Floppy

Controller.

Select Screen

+-

F1

F9

Select Item

Change Option

General Help

Load Defaults



OnBoard Floppy Controller

Use this item to enable or disable floppy drive controller.

Serial Port Address

Use this item to set the address for the onboard serial port or disable it.

Configuration options: [Disabled], [3F8 / IRQ4], [2F8 / IRQ3], [3E8 / IRQ4],

[2E8 / IRQ3].

Infrared Port Address

Use this item to set the address for the onboard infrared port or disable it.

Configuration options: [Disabled], [2F8 / IRQ3], and [2E8 / IRQ3].

Parallel Port Address

Use this item to set the address for the onboard parallel port or disable it.

Configuration options: [Disabled], [378], and [278].

Parallel Port Mode

Use this item to set the operation mode of the parallel port. The default value is [ECP+EPP]. If this option is set to [ECP+EPP], it will show the EPP version in the following item, “EPP Version”. Configuration options:

[Normal], [Bi-Directional], and [ECP+EPP].

EPP Version

Use this item to set the EPP version. Configuration options: [1.9] and [1.7].

ECP Mode DMA Channel

Use this item to set the ECP mode DMA channel. Configuration options: [DMA0], [DMA1], and [DMA3].

Parallel Port IRQ

Use this item to set the IRQ for the parallel port. Configuration options:

[IRQ5] and [IRQ7].

Advanced

USB Configuration

USB Controller

USB 2.0 Support

Legacy USB Support


[Enabled]

[Enabled]

[Disabled]

To enable or disable the onboard USB controllers.

+-

Select Screen

Select Item

Change Option

F1

F9

General Help

Load Defaults



USB Controller

Use this item to enable or disable the use of USB controller.

USB 2.0 Support

Use this item to enable or disable the USB 2.0 support.

Legacy USB Support

Use this item to enable or disable the support to emulate legacy I/O devices such as mouse, keyboard,... etc. Or you may select [Auto] so that the system will start to auto-detect; if there is no USB device connected, “Auto” option will disable the legacy USB support.

In this section, it allows you to monitor the status of the hardware on your system, including the parameters of the CPU temperature, motherboard temperature, CPU fan speed, chassis fan speed, and the critical voltage.

Main Advanced


H/W Monitor

Boot

Hardware Health Event Monitoring

CPU Temperature

M / B Temperature

CPU Fan Speed

Chassis Fan Speed

Vcore

+ 3.30V

+ 5.00V

+ 12.00V

: 37 C / 98 F

: 31 C / 87 F

: 2463 RPM

: N / A

: 1.629V

: 3.306V

: 5.067V

: 11.890V

Security

Select Screen

Select Item

F1

F9

General Help

Load Defaults


ESC Exit


In this section, it will display the available devices on your system for you to configure the boot settings and the boot priority.

Main Advanced



Boot Settings

Boot Settings Configuration

1st Boot Device

2nd Boot Device

3rd Boot Device

Hard Disk Drives

Removable Drives

CD/DVD Drives

[1st Floppy Device]

[2nd Floppy Device]

[3rd Floppy Device]

Security Exit

Configure Settings during System Boot.

Select Screen

Select Item


F1

F9

General Help

Load Defaults




Boot

Boot Settings Configuration

Boot From Network

VIA SATA Raid Utility

Bootup Num-Lock

[Disabled]

[Enabled]

[On]

To enable or disable the boot from network feature.

+ -

Select Screen

Select Item

Change Option

F1

F9

General Help

Load Defaults



Boot From Network

Use this item to enable or disable the Boot From Network feature.

VIA SATA Raid Utility

Use this to enable or disable VIA VT8237R SATA Raid BIOS Utility during

POST.

Boot Up Num-Lock

If this item is set to [On], it will automatically activate the Numeric Lock function after boot-up.

In this section, you may set or change the supervisor/user password for the system.

For the user password, you may also clear it.

Main Advanced



Security Settings

Supervisor Password : Not Installed

User Password : Not Installed

Change Supervisor Password

Change User Password

Security Exit

Install or Change the password.

Select Screen

Select Item

Enter Change

F1 General Help

F9

F10

Load Defaults

Save and Exit


Likewise, you may also specify the boot sequence from the available devices for the hard disk drives, the removable drives, and the CD/DVD drives.

Main

Exit Options

Advanced


H/W Monitro Boot

Save Changes and Exit

Discard Changes and Exit

Discard Changes

Load Optimal Defaults

Security

Exit

Exit system setup after saving the changes.

F10 key can be used for this operation.

Select Screen

Select Item


F1

F9

General Help

Load Defaults

F10

ESC

Save and Exit


Save Changes and Exit

When you select this option, it will pop-out the following message, “Save configuration changes and exit setup?” Select [OK] to save the changes and exit the BIOS SETUP UTILITY.

Discard Changes and Exit

When you select this option, it will pop-out the following message, “Discard changes and exit setup?” Select [OK] to exit the BIOS SETUP UTILITY without saving any changes.

Discard Changes

When you select this option, it will pop-out the following message, “Discard changes?” Select [OK] to discard all changes.

Load Optimal Defaults

When you select this option, it will pop-out the following message, “Load optimal defaults?” Select [OK] to load the default values for all the setup configurations.

This motherboard supports various Microsoft

®

Windows

®

operating systems:

98 SE / ME / 2000 / XP. Because motherboard settings and hardware options vary, use the setup procedures in this chapter for general reference only. Refer to your

OS documentation for more information.

The Support CD that came with the motherboard contains necessary drivers and useful utilities that enhance the motherboard features.

To begin using the support CD, insert the CD into your CD-ROM drive. The CD automatically displays the Main Menu if “AUTORUN” is enabled in your computer.

If the Main Menu did not appear automatically, locate and double click on the file

“ASSETUP.EXE” from the BIN folder in the Support CD to display the menus.

The Drivers Menu shows the available devices drivers if the system detects installed devices. Please install the necessary drivers to activate the devices.

The Utilities Menu shows the applications software that the motherboard supports. Click on a specific item then follow the installation wizard to install it.

This motherboard is equipped with Intel LGA 775 socket, which is a new CPU socket interface that Intel has released. Since it has several tiny pins, whcih are easily to be damaged by improper handling, ASRock sincerely presents you a clear installation guide through this “LGA 775 CPU Installation Live

Demo”. We hope you may check this live demo program before you start the installation of LGA 775 CPU in order to reduce the risks of CPU and motherboard damages caused by any improper handling. To see this Live

Demo, you can run Microsoft

®

Media Player

®

to play the file. You may find this

Live Demo in the motherboard’s Support CD through the following path:

..\ MPEGAV \ LGA775INST.DAT

If you need to contact ASRock or want to know more about ASRock, welcome to visit ASRock’s website at http://www.asrock.com; or you may contact your dealer for further information.

775VM800 User Manual 1 11

User Manual

CAUTION!

notch break notch break

Related manuals

ASROCK

775VM8

ASROCK

775VM800Pro-DDR2

ASROCK

P4VM8

ASROCK

775I65GV

ASROCK

775I65GV

ASROCK

775I65GV

ASROCK

775i65G R2.0

ASROCK

775i65G R2.0

ASROCK

775i65G R2.0