TYAN S1837 User Manual

Tyan S1837

Thunderbolt

Motherboard User’s Manual

Revision 1.10

All registered and unregistered trademarks and company names contained in this manual are property of their respective companies including, but not limited to the following. AMIBIOS is a trademark of American Megatrend Incorporated. Windows is a trademark of Microsoft Corporation. IBM, PC, AT, PS/2 are trademarks of IBM Corporation. INTEL, Pentium II, Celeron are trademarks of Intel Corporation. S1837 Thunderbolt is a trademark of TYAN Computer Corporation.

Information contained in this publication has been carefully checked for accuracy and reliability . In no event will Tyan Computer be held liable for any direct or indirect, incidental or consequential damage, loss of use, loss of data, or other malady resulting from errors or inaccuracies of information contained in this manual. The information contained in this document is subject to change without notice.

PRINTED IN USA

Table of Contents

1. Introduction....................................................................... 4

Overview............................................................................................... 4

Icons..................................................................................................... 5

Hardware Specifications/Features....................................................6

Software Specifications......................................................................8

T echnical Support...............................................................................8

Returning Merchandise for Service................................................. 9

2. Board Installation..............................................................11

Unpacking............................................................................................11

Installation........................................................................................... 11

Quick Reference for Jumpers.............................................................1 3

Map of Motherboard Jumpers..........................................................1 4

Setting Jumpers...................................................................................1 6

Server Management Connector (External SMI)..............................1 8

Chassis Intrusion Alarm Connector................................................. 1 8

Audio Connectors.............................................................................. 1 9

Clear CMOS & Reset Password........................................................1 9

Soft Power Connector .........................................................................20

Hardware Reset Switch Connector Installation..............................2 0

CMOS R TC...........................................................................................20

Flash EEPROM....................................................................................2 0

Mounting the Motherboard in the Chassis....................................2 1

Installing Memory ............................................................................... 2 1

Cache Memory .....................................................................................24

Installing the CPU and Cooling Fan.................................................2 5

Connecting IDE and Floppy Drives.................................................3 3

Connecting the Power Supply ...........................................................3 5

Installing Add-on Cards.....................................................................36

Connecting PS/2, USB, Serial & Parallel Drivers............................3 7

Intel Ethernet Setup and Use............................................................ 3 8

Creative Labs Sound Drivers Installation Note..............................5 1

Frequently Asked Questions............................................................ 51

3. BIOS Configuration........................................................... 55

Main Setup...........................................................................................5 6

Advanced CMOS Setup.................................................................... 6 1

Chipset Setup...................................................................................... 6 6

Power Management Setup.................................................................7 2

Plug and Play Setup............................................................................7 6

Peripheral Setup.................................................................................. 8 1

Supervisor and User Security ............................................................8 5

Language Utility .................................................................................. 8 6

Flash Writer Utility ..............................................................................8 6

4. System Resources............................................................. 8 7

Beep Codes..........................................................................................8 7

Troubleshooting System Problems..................................................8 8

Displayed Error Messages................................................................ 8 9

Appendix 1 - CPU Retention Module Options............................................... 91

Appendix 2 - Adaptec Ultra2 LVD SCSI......................................................... 93

Appendix 3 - Glossary .......................................................................................102

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Chapter 1

Introduction

Overview

The Thunderbolt family is a quality , high performance motherboard designed for Intel Pentium II and Pentium III microprocessors. This motherboard utilizes the Intel 440BX or 440GX AGPsets and can support CPU speeds of 233MHz through 550MHz and host bus speeds of 66MHz to 100MHz (please see T yan’ s website for up-to-date CPU support information).

The motherboard, with built-in AGP slot, provides high performance capabilities that are ideal for a wide range of demanding applications such as CAD, CAM, CAE, desktop publishing, 3D animation, and video production.

This integrated high-performance system board is supported in an Extended ATX form factor . Some of the features included are onboard UltraDMA/33, onboard dual channel Ultra2 SCSI (Adaptec 7896 chip), onboard Creative

ES1373 Audio, onboard Intel Ethernet 82559, and onboard high speed I/O.

W ith I/O and drive controller support built onboard, the one AGP slot, six PCI and one ISA slots (one shared, seven usable) are free for numerous add-on

expansion cards.

chapter 1

Introduction

S1837 Thunderbolt

Remember to take a look at TYAN Computer’s web site located at http://www .tyan.com. There you can find information on all of TYAN’ s products along with F AQs, distributors list, drivers, and BIOS setting explana-

tions.

Icons

In order to help you navigate this manual and set up your system, we have added several icons to our format.

This icon alerts you to particularly important details regarding the setup or maintenance of your system. This icon often appears next to information that may keep you from damaging your board or system. While we will often point out the most vital paragraphs in a chapter, you should always read every word

in the text. Failing to do so can lead to exasperation and expense.

Wherever possible, we have included step-by-step instructions for setting up your system, which are indicated by this icon. However, it is in your best interest to read an entire section (and perhaps the entire manual) before you begin to fiddle with your

motherboard.

While we have alerted you to potential dangers in several places in the manual with this icon, these warnings should not be

regarded as the whole of your safety regimen. Never forget that computers are electrical devices, and are capable of delivering a shock. Prevent damage to yourself and to your board: always ensure that your system is turned off and unplugged whenever you are working with it, and that you are

equipped with a static safety device.

important!

procedure

warning

INTRO

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Chapter 1

Introduction

Hardware Specifications/Features

Processor Information • Two SEC slots (Slot One type)

• 66MHz to 100MHz bus support

• Pentium II or Pentium III 233-600MHz*

• Supports Celeron CPUs in single

mode

Chipset Information • Intel 440GX (or BX) AGPset

• Intel PIIX4e controller

• National 82351 Super I/O chipset

BIOS Information • AMI Plug and Play flash BIOS

• Deep Green, Energy Star, ACPI, Year 2000, and PC98 compliant (Adaptec AIC-7896 SCSI chip is NOT PC98 compliant at this time

• Yellow LED for sleep mode

Main Memory • Up to 2048MB onboard (for GX model)

• Up to 1024MB onboard (for BX models)

• Four 168-pin DIMM sockets

• Supports PC100 SDRAM with

SPD, and SDRAM+ECC

• Supports 66MHz SDRAM with SPD with 66MHz CPU clock only

Expansion Slots • One 32-bit AGP slot

• Six 32-bit PCI Bus Master slots

• One 16-bit ISA slot

• One shared, seven usable

Disk Drive & System I/O• Two PCI bus mastering EIDE

channels

• Supports EIDE CD-ROMs

• PIO Mode 3 & 4 (up to 16.6MB/sec DTR)

• UltraDMA/33 bus mastering mode

(up to 33MB/sec DTR)

* See TYAN website for CPU Compatibility List

S1837 Thunderbolt

INTRO

• Support for one floppy drive (Mode

1.44MB supported)

• T wo serial ports (16550 UAR T s)

• One ECP/EPP parallel port

• One IR (InfraRed) I/O interface port (shared

with Com2)

• T wo USB rev 1.1 ports

• One PS/2 mouse port

• One PS/2 keyboard port

Onboard Ultra2 SCSI • Adaptec AIC-7896 dual channel Ultra2

L VD SCSI

• T wo 68-pin high density Ultra2 SCSI ports

• One 50-pin legacy connector

• Adaptec Ultra SCSI BIOS

Onboard Ethernet • Intel 82559 10/100 Ethernet onboard

• Full W ake-on functionality (Requires ATX

2.01 power supply)

• One RJ-45 ATX connector

Creative Labs Sound • 32-bit PCI ES1373 audio chip (Optional) • A TX Joystick, Audio in, Speaker , Micro

phone connectors

System Hardware

• •

• Onboard hardware for monitoring

Management temperature, supply voltages, and fan

speed

••

• Intel LANDesk Client Manager

software

••

• Chassis intrusion detection capable

Voltage and Power • ATX power supply connector Information • +12V power source for DC fan onboard

• 3.3V DRAM support

• Utilizes GTL+ bus to reduce power

consumption and EMI

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Chapter 1

Introduction

Physical Dimensions • Extended ATX design

• 13 inches x 12 inches

• IO shield compatible with Intel

Marlinspike (included)

Software Specifications

OS • Operates with W indows 98, W indows

NT 4.0, OS/2, Novell Netware, and SCO Unix

T echnical Support

If a problem arises with your system, you should turn to your dealer for help first. Your system has most likely been configured by them, and they should have the best idea of what hardware and software your system contains. Hence, they should be of the most assistance. Further, if you purchased your system from a dealer near you, you can actually bring your system to them to have it serviced, instead of attempting to do so yourself (which can have expensive consequences).

If your dealer is unable to assist you, try our web page, http:// www .tyan.com technical support phone line, (510) 440-8808 or e-mail address techsupport@tyan.com

S1837 Thunderbolt

Returning Merchandise for Service

During the warranty period, contact your distributor or system vendor FIRST for any product problems. This warranty only covers normal customer use and does not cover damages incurred during shipping or failure due to the

alteration, misuse, abuse, or improper maintenance of products.

For Resellers Only:

A receipt or copy of your invoice marked with the date of purchase is required before any warranty service can be rendered. You can obtain service by calling the manufacturer for a Return Merchandise Authorization (RMA) number . The RMA number should be prominently displayed on the outside of the shipping carton and the package should be mailed prepaid, or hand-carried to the manufacturer. TY AN will pay to have the board ground-shipped back to you.

INTRO

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This page is intentionally left blank.

Chapter 1

Introduction

S1837 Thunderbolt

chapter 2

Board Installation

Unpacking

The retail motherboard package should contain the following:

• S1837 motherboard

• One 40-pin IDE and 34-pin floppy cable pack

• User’s manual

• One 3-head Ultra2 SCSI cable (cables with 4 heads or longer must be

ordered separately)

• One 3-head regular SCSI cable

• T wo CPU retention modules

• One A TX I/O Shield

• One System Management & Driver CD; includes complete drivers for

SCSI, LAN and audio controllers

• One gameport cable

• Three Driver Diskettes for Adaptec 7896

Installation

You are now ready to install your motherboard. The mounting hole pattern of the Thunderbolt matches the ATX system board specifications. Your chassis

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should be that of an extended ATX motherboard form factor.

How to install our products right...the first time.

What’s the first thing I should do?

The first thing you should do is read this user’s manual. It contains important information which will make configuration and setup much easier.

Here are some precautions you should follow when installing your motherboard:

(1) Ground yourself properly before removing your motherboard from the antistatic bag. Unplug the power from your computer and then touch any metal part on the computer case. (Or wear a grounded wrist strap.) (2) Hold the motherboard by its edges and do not touch the bottom of

the board. (3) A void touching motherboard components, IC chips, connectors, and leads.

(4) A void touching pins of memory modules and chips. (5) Place motherboard on a grounded antistatic surface or on the

antistatic bag.

Having reviewed the precautions above, the next step is to take the motherboard out of the cardboard box and static bag, hold it by its edges, and place it on a grounded antistatic surface, component side up. Inspect the board for damage.

DO NOT APPL Y POWER T O THE BOARD IF IT HAS BEEN DAMAGED!

Press down on any of the socket ICs if it appears that they are not properly seated (the board should still be on an antistatic mat). Do not touch the bottom of the board. Remember, don’ t take any electronic device out of its protective bag until you are ready to actually install it into the computer case. If you do not ground yourself, you risk zapping the motherboard or adapter card. Subsequent problems may not arise immediately because electrostatic discharge damage, unlike physical damage, causes the device to fail over time.

*Power Supply Requirement: A TX Power Supply should be 2.01 compliant. S tandby current must be 750mA or higher (SB5V = 0.75A)

procedure

important!

Chapter 2

Board Installation

S1837 Thunderbolt

INST ALL

Installation Steps

1. Set Jumpers / Dip Switch

2. Mount Motherboard in Chassis

3. Install Memory

4. Install CPU & Cooling Fan

5. Connect IDE and Floppy Drives

6. Connect Power Supply

7. Install Add-on Cards

8. Connect PS/2, USB, Serial and Parallel Devices

Quick References for Jumpers

In this manual, the terms “closed” and “on” are used when referring to jumpers (or jumper pins) that are active; “open” and “off” are used when referring to jumpers (or jumper pins) that are inactive. See the Figure 2-1 for examples of “on” and “off” pins and jumpers. The square pin in the diagram is Pin 1.

Jumpers and pins are connected by slipping the blue plastic jumper connector overtop of two adjacent jumper pins (indicated by 1-2 or 2-3). The metal rod

inside the plastic shell bridges the gap between the two pins, completing the circuit. See Figure 2-2 for more examples of pin connections.

The tables and maps on the following pages will help you set the jumpers for CPU speed, Infrared, and external connector pin assignments, among others. The miniature motherboard maps will help you locate the jumpers on your board. A full-page map of the motherboard can be found on the next two pages.

2 pin jumpers

off on

3 (or more) pin jumpers

1-2 2-3 open

1 2 3

Figure 2-1

Figure 2-2

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Chapter 2

Board Installation

The tiny “1”s next to jumpers of 3 pins or more indicate the position of pin 1 for that jumper .

Map of Motherboard Jumpers

COM1

AGP port

PCI slot 2

PCI slot 3

PCI slot 1

PCI slot 4

PCI slot 5

ISA slot 1

AMIBIOS

Intel

PIIx4e

PCI slot 6

Primary IDE connector

Secondary IDE connector

Floppy connector

Ultra2 SCSI Channel A

Ultra2 SCSI Channel B

Narrow SCSI Channel B

Nat’l ‘351

CPU slot 1 (Slot One type)

CPU slot 2 (Slot One type)

DIMM bank 1

Intel

GX (or BX)

Chipset

DIMM bank 2 DIMM bank 3 DIMM bank 4

USB1

Keyboard

USB2

Mouse

COM2

ATX power supply

JP9

J21

JP23

JP25

J10

J11 J12

JP24

JP34

J19

J13

FAN1

FAN2

FAN3

1 1

Ethernet

Intel

82559

Creative

ES1373

J16

FAN4

JP31

ATX power supply

Printer Port

Adaptec

7896

3 volt

J15

JP32

JP35

Intel I/O

APIC

1 2 3 4

FAN5

JP33

J22

Internal Speaker

Speaker

MIC

Line In

Game Port

S1837 Thunderbolt

INST ALL

Intel 443GX (or BX)

4 DIMM slots

2 SEC slots

2 Wide SCSI channels

1 Narrow SCSI channel

Adaptec AIC-7896

AMIBIOS

1 ISA slot

6 PCI slots

Ethernet

AGP port

IDE and Floppy

connectors

Double row ATX connectors

ATX Power supply

connectors

Speaker/

Line In

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Chapter 2

Board Installation

important!

1. Setting Jumpers

1-A. CPU Speed Settings (Switch S4)

There are two steps to set the CPU speed. First, set the clock multiplier with jumpers S4 according to the specification of your Pentium II CPU using the chart below. There is no need to set the bus speed. The motherboard autodetects the bus speed of the CPU. Pentium III and newer CPUs have their

clock multiplier preset - as a result, those CPUs will ignore the S4 setting.

Presently all Celeron CPUs use a 66MHz bus speed. Tyan does not recom-

mend operating CPUs, memory , or PCI Bus at higher than rated speed. Tyan takes no responsibility for any problems related to overclocking any bus or

component on the system board.

1-B. Front Panel Assignment (Jumper J15)

sniP2-101-661-3102-8132-2272-42

noitcnuF

rewoP

ffO/nO

rotcennoC

DELDDHDELrewoP

teseR hctiwS

rekaepS

tnemngissA

rewoP=1

ffO/nO

DNG=2

CCV=6

XRRI=8

DNG=9

XTRI=01

edoM=11

-=51 edohtac

+=61

edona

DNG=81

+=02

DNG=22

teseR=32

CCV=42

lanretnI=62

rekaepS

-=72

MultiplierBusSpeedCPUspeed1234

(set Jmprs

on board)

3.5 100 350 ON OFF OFF ON

4.0 100 400 OFF ON ON ON 66 300 OFF ON OFF ON

100 450 OFF ON OFF ON

66 333 OFF OFF ON ON

100 500 OFF OFF ON ON

66 366 OFF OFF OFF ON

100 550 OFF OFF OFF ON

66 400 ON ON ON OFF

100 600 ON ON ON OFF

6.5 66 433 ON ON OFF OFF

7.0 66 466 ON OFF ON OFF

4.5

5.0

5.5

6.0

S1837 Thunderbolt

INST ALL

1-C. Speaker Connector (Jumper J15)

The speaker should be connected to pins 24-27 of jumper J15. As default, pins 26-27 of jumper J15 are connected to enable the internal buzzer .

1-D. Connector Pinout (JP32)

*Power LED: For 2-pin: bicolor/single color LED - Use pins 2-4

For 3-pin: bicolor LED - Use pins 2-4 and GND pin 13

1-E. Wake-On Ring Connector (JP33)

901

1121

3141

5161

7181

To p

Bottom

Top Pin

Bottom Pin

JP32 Side View

JP32

Pin1

Pin17

Pin2

VCC

PowerLED

HDD LED

Sleep LED

Ground

PowerOn/Off

Reset

Gro und

VCC

910

No C onnect

IR R eceiv e

11 12

VCC

Ground

13 14

No C onnect

IR T ransm it

15 16

VCC

No Connect

17 18

No C onnect

Pin 1 2 3

+5 VSB Ground WOR

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Chapter 2

Board Installation

1-G. Wake-On LAN Connector (JP34)

1-H. Server Management Connector (JP31)

The EXTSMI (External System Management Interface) connector, jumper JP31, is used by some plug-in cards. Certain applications associated with these plug-in cards use the interface for hardware control and queries.

1-I. Chassis Intrusion Alarm Connector (J16)

The J16 connector is an intrusion alarm, that can be connected to the system chassis. When active (J16 is connected to the chassis), this alarm will alert the system administrator anytime someone opens the system’s case.

1-J. Fan1, Fan2, Fan3, Fan4, Fan5 - Pinout

- Fan1 connector corresponds to CPU 1 slot.

- Fan2 connector corresponds to CPU 2 slot.

- Fan3 / Fan4 are Chassis Fan

- Fan5 = connector header

Note: W ith Intel’s LANDesk system monitoring software, only 3 fans can be monitored at one time.

1-K. Fan3 Speed Detect (J21) and Fan4 Detect (J22)

J21 and J22 are 2-pin jumpers that control the monitoring of Fan3 or Fan4 respectively . If J21 is set to the ON (closed) position, Fan3 can be monitored by LANDesk. If set to the OFF (open) position, the Fan will NOT be moni-

tored by LANDesk.

When using Intel’ s LANDesk system management software, you may monitor the status of the CPU Fans by connecting them to the Fan1 and/or Fan2 connectors. You will NOT be able to monitor your CPU fan with the other Fan connectors.

Pin 1 2 3

Ground + 12V Speed

Pin 1 2 3

5VSB Ground WO L

S1837 Thunderbolt

INST ALL

1-L. Audio / Video Connector Pinouts - J9, J10, J11, J12

Audio Connectors

There are four black 4-pin connectors onboard which are used for various peripherals’ audio signals. The digital signal that comes in through these connectors is directed through the Ensoniq 1373 PCI sound chip, and the digital signal is turned into an audio signal which goes out through the speaker . The TDA connector (J10) is for modem audio; the MPEG connector (J9) is for DVD and TV cards; the VIDEO connector is (J11); the CD connector (J12) is for CD-ROMs.

1-M. Onboard Sound Enable/Disable (JP24) ***

1-N. Onboard SCSI Enable/Disable (J19) ***

1-O. SCSI LED Pinout (JP23)*

* Default setting is 1-2

1-P. Onboard LAN Enable/Disable (JP25) ***

1-Q. Clear CMOS and Reset Password (Jumper JP9)

*** Plastic Jumper connectors are not provided. Setting is OFF or “Enabled” by default.

1234

J9- MP EGInput

MPEG LRCLK MPEG BCLK MPEG Data In Ground

J10- Modem Audio

Phone G round Ground M on o Out

J11- TV Card Audio

I n-Left Ground G round I n-R ight

J12- CDAudio Connector

C D _ I N-Left Ground Ground CD_I N -R ig ht

Enable Disable

JP24 OFF ON

Enable Disable

J19 OFF ON

Pin 1 2 3 4

VC C SCSI LE D SCSILE D VCC

Enable Disable

JP25 OFF ON

Default Reset

JP 9 1-2 2-3

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Chapter 2

Board Installation

If you have been locked out of your system because you forgot your password or set the CMOS incorrectly , follow the instructions below .

1. Power off the system

2. Set jumper JP9 to pins 2 and 3 (see page 14 for location of JP9).

3. Wait for at least 2 seconds, then return jumper JP9 to pins 1 and 2.

4. Power on the system again. By following this procedure, you will erase your password and reset the CMOS to the BIOS defaults.

Soft Power Connector

The Soft Power Connector is part of jumper block J15. The Thunderbolt uses the chipset for power management, including turning on and off the system. If the Power Button Function option in the BIOS Power Management Menu is set to On/Off (which is the default), pressing the power button once after the BIOS has booted up will turn the system on and off. If the Power Button Function option is set to Suspend, pressing the power button once will wake the system or send it to Suspend mode. In this case, you cannot turn the system off unless you shut down through the Windows operating system or you hold the power button down for at least four seconds.

Hardware Reset Switch Connector Installation

The Reset switch on your case’s display panel provides you with the Hardware Reset function, which is the same as power on/off. The system will do a cold start after the Reset button is pushed.

CMOS RTC

The Real T ime Clock (R TC) circuit, which provides the date and time for the system is integrated into the 440BX/GX AGPset. If the external battery for the R TC is low , you will most likely lose your BIOS settings. Normally the life span of an external battery is 2 years. If yours is running low , you will need to replace it with a new 3V lithium battery (CR2032).

Flash EEPROM

The Thunderbolt uses flash memory to store BIOS firmware. It can be updated as new versions of the BIOS become available. You can upgrade your BIOS easily using the flash utility (see page 86).

S1837 Thunderbolt

INST ALL

2. Mounting the Motherboard in the Chassis

Follow the instructions provided by the case manufacturer for proper installation guidelines. TYAN recommends that you make use of all mounting holes to screw down the motherboard. The adapter cards and the screws holding them down will keep your board flat. The fastening screw should not short any of the traces on the motherboard. Make certain that you do not overtighten the screw , as it will damage the motherboard and possibly break internal traces in the surrounding area. The hole you should use is located at the top-center of the board where the adapter cards are fastened to the case.

3. Installing Memory

Since TYAN boards are manufactured with performance in mind, you should use add-in components that match. Some DIMM modules may seem to be high quality because of name or feel but that does not guarantee real-world usability . Some cheaper or OEM memory may have brand-name components, but they may contain inferior or substandard parts which do not meet the critical tolerances our products require. Because of this, your memory may not work correctly in a TYAN board though it may work well in a competitor’s board. This is because many of our competitors do not adhere to the strict tolerances required for high performance. If you buy a TYAN board, you are getting the best system available. To make installation easy and trouble free, get high quality parts. For a list of recommended memory vendors, please visit T yan’s website at www .tyan.com - go to the “Memory Support” area in the Support Section. The website memory compatibility lists include DIMMs that have proven to be very stable on our boards and perform extremely well.

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Chapter 2

Board Installation

Figure 2-3

To install your DIMMs, line your module up so that the pins fit into the slot. There is only one way that your DIMM can fit properly. Make sure that the short row of pins is lined up with the short gap in the DIMM slot. Figure 2-3 above shows how to sit the DIMM into its slot. To insert the DIMM, push down vertically on the module with even force, as shown in the photo. Do not shove one end in first; doing so will bend the DIMM pins.

To lock the DIMM into place, push the plastic clips on either end of the slot onto the notches in the ends of the DIMM (see Figure 2-4 on the next page). In some cases, pushing the memory module into the DIMM slot will move the plastic clips inward, automatically locking the module into place. T o remove your DIMM, simply pull the clips back, and pull up on the module.

Place the DIMMs in an antistatic bag as soon as you remove them to avoid static damage.

important!

S1837 Thunderbolt

INST ALL

Figure 2-4

The Thunderbolt uses a 64-bit data path from memory to CPU and can accommodate up to 2 GB of SDRAM. The 168-pin DIMMs (Dual In-line Memory Modules) must be of the 3.3V, unbuffered variety . The position of the notch in the SDRAM key position will tell you whether or not a DIMM is unbuffered (see the Figure 2-5 below). All installed memory will be automati-

cally detected, so there is no need to set any jumpers.

Some details of memory installation:

• The mainboard supports 32MB, 64MB, 128MB SDRAM; and supports 256MB registered SDRAM DIMM modules. *

• PC-100 DIMM is required if CPU bus speed is at 100MHz

RFU

Buffered

Unbuffered

Figure 2-5

EEPROM

important!

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Chapter 2

Board Installation

• The board supports registered or nonregistered memory chips. DO NOT

mix registered and nonregistered memory chips on the motherboard.

The table below shows some of the possible memory configurations. Not all possible configurations are listed.

W arning! The 256MB DIMMs represented in the table ar e REGISTERED memory chips. DO NOT use registered and nonregistered memory chips simultaneously! (Check with your memory dealer for more information).

See www .tyan.com for latest memory compatibility information.

Cache Memory

Celeron processors have the L2 (Level 2) cache built into their architecture, so there is no need for an L2 cache on the motherboard. The Celeron processor has a physical L2 cache size of 128KB and a cacheable memory area of 512MB.

1knaBMMID2knaBMMID3knaBMMID4knaBMMIDlatoT

1xBM81xBM81xBM81xBM8BM23

1xBM611xBM611xBM8

BM04 1xBM611xBM611xBM611xBM61BM46 1xBM231xBM611xBM611xBM61BM08 1xBM231xBM231xBM611xBM61BM69 1xBM461xBM231xBM611xBM61BM821 1xBM461xBM461xBM231xBM23BM291 1xBM461xBM461xBM461xBM46BM652

1xBM8211xBM461xBM461xBM46BM023 1xBM8211xBM8211xBM461xBM46BM483 1xBM8211xBM8211xBM8210BM483 1xBM8211xBM8211xBM8211xBM821BM215 1xBM652000BM652 1xBM6521xBM65200BM215 1xBM6521xBM6521xBM6520BM867 1xBM6521xBM6521xBM6521xBM652BM4201

1xBM215*1xBM215*1xBM215*1xBM215*BM8402*

important!

S1837 Thunderbolt

4. Installing the CPU and Cooling Fan

Pentium II or Pentium III processors can be used on the Thunderbolt. Please refer to pages 16-20 for the correct CPU jumper settings for your board. Remember:

• The CPU is a sensitive electronic component and it can easily be damaged

by static electricity . Do not touch the CPU pins with your fingers.

• Before the CPU is installed, the motherboard must be placed on a

flat surface. You should be able to insert the CPU with minimal, but firm, pressure. Do not press down hard on the CPU.

Currently , two types of cooling mechanisms are produced for Pentium II processors: active (figure 2-6a) and passive (figure 2-6b). These two types of cooling methods essentially perform the same function. The active cooler is equipped with a cooling fan and heat sink, while the passive cooler is simply a larger heat sink with no fan. The type of cooler used has no effect on performance, and both types can be installed in the CPU slot on the Thunderbolt board.

Figure 2-6a Figure 2-6b

Installing CPU Retention Modules

Installation of a Pentium II / III processor requires a CPU retention module, which is first secured onto the motherboard. Tyan offers a variety of retention mechanisms for the different CPU types. See Appendix 1 for options.

Installation of SECC2 CPUs (Figure 2-7 above) with the retention modules require a little more attention and care. Instructions for SECC2 CPU installation can be found on pages 27-32.

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INSTALL

Figure 2-7

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To attach the retention module, place the motherboard on a flat surface. Locate the key pin on one end of the CPU slot on the board. Then carefully line up the key notch on the retention module with the key pin on the CPU slot (the key pin on the CPU slot indicates the correct orientation of the CPU) See Figure 2-8.

Drop the retention module (Figure 2-9) down over the CPU slot so that the retention module sits flat against the motherboard. Tighten the screws in a clockwise manner to secure the module to the board. Warning: Do not overtighten the screws as you may damage the module and/or the motherboard.

Installing the CPU with Active Cooling

When the retention module is securely installed, you are ready to plug in the CPU. Press down firmly on the CPU until you hear a “click” (see Figure 2-10). This clicking sound indicates that the CPU is fully locked into the retention module. If you have an active cooler, you will also need to connect the CPU’s cooling fan cable to the cooling fan power connector on the board.

Locate the cooling fan connector (e.g. F AN1) on the mother board. Plug the CPU’ s cooling fan cable into the cooling fan connector on the board. There will be a plastic clip assembly similar to that of the ATX power connector that will force you to connect the fan cable correctly (see Figure 2-11 on the following page).

Figure 2-8 - Pentium II Slot Connector and Key Pin

Figure 2-9

Figure 2-10

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Board Installation

S1837 Thunderbolt

Figure 2-1 1

Removing the CPU.

T o remove the CPU, move the locks to the center of the CPU. A click will be heard when the CPU has been unlocked. Gently pull up on the CPU, taking care not to bend the motherboard or the CPU retention module.

To remove the lock from the retention module, gently press the ends of the locks inward and pull.

Installing SECC2 CPUs - Option 1

The major physical difference between regular Pentium II’ s and Pentium SECC2 is the plastic CPU enclosure. As Figure 2-12 indicates, the plastic CPU enclosure covers the entire CPU card of regular Pentium II’s. On the other hand, the plastic CPU enclosure covers only the side faces of the SECC2 Pentium II / III card.

Due to the physical differences in the SECC2 CPU, installing the retention modules requires a different technique than the ones previously discussed.

INSTALL

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On both sides of the SECC2 CPU reside the lower tabs of the aluminum heat sink and the bottom corners of the plastic CPU enclosure (see Figure 2-13). These tabs and corners should fit into the retention braces.

W arning: DO NOT first screw the r etention braces onto the motherboard by themselves. If you do, you will have difficulties inserting the CPU into the retention braces and CPU slot.

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Board Installation

Pentium II SECC2 Pentium II

Figure 2-12

Lower T abs

Enclosure Corners

Figure 2-13

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S1837 Thunderbolt

Currently , the retention module recommended for securing the SECC2 CPU is included in the motherboard package. The retention braces consist of two small components that resemble ‘bookends’. (See Figure 2-14 )

The first installation step is to set the retention braces properly against the sides of the CPU. The lower tabs of the aluminum heat sink and the bottom Slits corners of the plastic enclosure should loosely fit within the two slits of the braces.

Figure 2-14

Figures 2-15 below show a top view and side view of a retention brace positioned against one side of the SECC2 CPU.

Top View

Side View

Figure 2-15

When both braces are properly positioned, press both braces against the sides of the CPU and carefully lift them over the CPU slot on the motherboard.

W arning - Because the braces are loosely held against the CPU, they can easily fall off. You must hold both braces against the CPU while lifting all

three components above the motherboard. (See Figure 2-16 on the following page.)

INSTALL

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Figure 2-16

Be sure to line up the holes of the retention brace with the screws protruding from the motherboard. At the same time, make sure the CPU is lined up with the CPU slot. Lower the three components onto the motherboard. The screws on the motherboard should fit through the holes of the retention braces and the CPU should fit into the slot. Secure the retention braces with the nuts provided in the package. The end result should look like Figure 2-17.

Figure 2-17

When removing the CPU, unscrew the nuts on the retention braces and remove all three components at once. This may require careful firm tugs to pull the CPU out of its slot.

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Board Installation

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