Tyan S1846S User Manual 1.5

Tyan S1846

Tsunami ATX

Motherboard User’s Manual

Revision 1.50

Copyright © Tyan Computer Corporation, 1998. All rights reserved. No part of this
manual may be reproduced or translated without prior written consent from Tyan
Computer Corp.

All registered and unregistered trademarks and company names contained in this
manual are propery 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.
S1846 Tsunami and Tsunami-ATX are trademarks 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.

T able of Contents

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

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

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

Hardware Specifications/Features................................................ 5

Software Specifications.................................................................. 7

T echnical Support........................................................................... 7

Returning Merchandise for Service............................................. 8

2. Board Installation..................................................................................... 10

Unpacking....................................................................................... 1 0

Installation...................................................................................... 1 0

Setting Jumpers.............................................................................. 2 3

3. Onboard Resource Settings................................................................... 24

Quick Reference for Jumpers........................................................ 2 4

Map of Motherboard Jumpers..................................................... 25

Hardware CMOS & Password Reset........................................... 2 7

Soft Power Connector.................................................................... 2 9

Speaker Connector Installation.................................................... 2 9

Hardware Reset Switch Connector Installation......................... 2 9

External SMI.................................................................................... 2 9

Chassis Intrusion Alarm Connector............................................ 3 0

Ensoniq Audio Connectors......................................................... 3 0

CMOS RTC...................................................................................... 3 0

Flash EEPROM.............................................................................. 3 1

RAM Installation........................................................................... 3 1

Cache Memory............................................................................... 31

Frequently Asked Questions....................................................... 32

4. BIOS Configuration................................................................................. 34

Main Setup...................................................................................... 3 5

Advanced CMOS Setup.............................................................. 4 0

Chipset Setup.................................................................................. 4 5

Power Management Setup............................................................ 5 1

Plug and Play/PCI Setup............................................................... 55

Peripheral Setup............................................................................. 6 0

Supervisor and User Security ...................................................... 6 4

Language Utility............................................................................. 65

Flash Writer Utility ......................................................................... 65

5. System Resources.................................................................................... 66

Beep Codes..................................................................................... 6 6

Troubleshooting System Problems............................................. 67

POST Checkpoint Codes.............................................................. 6 8

Displayed Error Messages.......................................................... 75

Appendix 1 - CPU Retention Module Options.......................................... 78

Appendix 2 - Glossary.................................................................................. 80

Chapter 1

Introduction

chapter 1

Introduction

Overview

The S1846 (S1846S and S1846SLA) T sunami A TX is a quality , high perfor­mance motherboard designed for Intel Pentium II microprocessors. This
motherboard utilizes the Intel 440BX AGPset and can support CPU speeds of
233MHz through 450MHz, and host bus speeds of 66MHz to 100MHz.

The S1846 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 system board achieves high reliability with numerous features
and yet is small enough to be supported in an ATX form factor. Some of the
features included are onboard dual channel PCI PIO, BUS Master IDE and
UltraDMA/33, onboard floppy controller, and onboard high speed I/O.

Flexibility and expandability have been designed into the T sunami ATX. W ith
I/O and drive controller support built onboard, the one AGP slot, five PCI and
two ISA slots (one shared, seven usable) are free for numerous add-on
expansion cards.

Remember to take a look at TY AN Computer’ s web site located at
http://www .tyan.com. There you can find information on all of TY AN’ s

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4

products along with F AQs, distributors list, drivers, and BIOS setting explana­tions.

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

!

important!

chapter, you should always read every word in the text. Failing to do so can
lead to exasperation and expense.

to information that may keep you from damaging your board or
system. While we will often point out the most vital paragraphs in a

INTRO

1.

2.

3.

procedure

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

warning

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.

Hardware Specifications/Features

Processor Information •One SEC slot (Slot One type)

•66MHz to 100MHz bus support
(BIOS selectable)

•Pentium II 233-450MHz

•Supports Celeron CPUs

Chipset Information •Intel 440BX AGPset

•Intel PIIX4e controller

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Chapter 1

Introduction

•National 309 Super I/O chipset

V oltage 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

Main Memory •Up to 768MB onboard

•Three 168-pin DIMM sockets

•Supports 100MHz SDRAM with SPD

System Management •Optional National LM79 and LM75 ASICs

with onboard alarm for monitoring temperature,
supply voltages, and fan speed

•Intel LANDesk Client Manager software
(with LM79 installed)

•Chassis intrusion detection capable

Expansion Slots •One 32-bit AGP slot

•Five 32-bit PCI BUS Master slots

•T wo 16-bit ISA slots

•One shared, seven usable slots

Physical Dimensions •ATX design

•12 inches x 8.25 inches

•S1846S requires Intel V enus
compatible I/O shield

•S1846SLA requires Intel Caveman compatible
I/O shield

BIOS Information •AMI Plug and Play flash BIOS

•Deep Green, Energy Star, ACPI, Year 2000, and
PC98 compliant

•Soft power-down, multiple boot
options

•Win98/NT5 ready , DMI 2.0 compliant

•PCI 2.1, APM 1.1 compliant

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

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channels

•Supports EIDE CD-ROMs

•PIO Mode 3 & 4 (up to 17MB/sec DTR)

•UltraDMA/33 bus mastering mode (up to
33MB/sec DTR)

•Support for two floppy drives (up to 2.88MB)

•T wo serial ports (16550 UAR T s)

•One ECP/EPP parallel port

•One IR (InfraRed) I/O interface port

•T wo USB rev 1.2 (universal serial bus)
connectors

•One PS/2 mouse connector

•One PS/2 keyboard connector

Ensoniq ES 1371 AudioPCI •AC97 Codec
(S1846SLA only) •Uses a single, shared IRQ

•High performance PCI bus master

•Spatial enhanced 3D sound (SWS)

•Wavetable synthesis built in

•Joystick, Audio in, Speaker, Microphone
connectors

Warranty •3 year manufacturer’s warranty

INTRO

Software Specifications

OS •Operates with MS-DOS, Windows 3.x,

Windows for W orkGroup 3.x, W indows 95,
Windows 98, W indows NT , OS/2, Novell
Netware, Solaris, 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 to you, you can actually bring your system in to
them to have it serviced, instead of attempting to do so yourself (which can
have expensive consequences).

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Chapter 1

Introduction

Help resources:

1. See FAQ and beep codes sections of this manual.

2. See T yan web site for FAQ, bulletins, driver updates, etc.

http://www.tyan.com

3. Contact your dealer or distributor for help BEFORE calling T yan.

4. Check the T yan user group: alt.comp.periphs.mainboard.tyan

5. Email T yan tech support: [e-mail]

6. Call T yan tech support: 510-440-8808

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. TYAN will pay to have the board shipped back to you.

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8

INTRO

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This page left blank intentionally.

9

Chapter 2

Board Installation

chapter 2

Board Installation

Unpacking

The motherboard package should contain the following:
(1 ) S1846S(LA) mainboard
(1 ) 40-pin IDE and 34-pin floppy cable pack
(1 ) S1846 User’s Manual
(1 ) Retention module
(1 ) Driver CD with Ensoniq AudioPCI manual and installation instructions

(S1846S only)

(1 ) System Management & Driver CD with Ensoniq AudioPCI manual and

installation instructions (1846SLA only)

Installation

You are now ready to install your motherboard. The mounting hole pattern of
the S1846 matches the ATX system board specifications. Your chassis should
be that of a standard ATX mainboard 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

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10

1.

information which will make configuration and setup much easier.

2.

3.

procedure

The next step is to properly ground yourself. First, unplug the power from your
computer case and then touch the metal casing of the power supply or any
metal part on the computer case. This will discharge any electricity from your
body. Take the motherboard out of the cardboard box and static bag, holding it
by its edges, and place it on a grounded anti-static surface, component side
up. Inspect the board for damage.

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

!

important!

Press down on any of the socket ICs if it appears that they are not properly
seated (the board should still be on an anti-static 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 don’t 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.

Install the motherboard into your case.

Follow the instructions provided by the case manufacturer for proper installa­tion guidelines. TYAN recommends that you use only one screw to hold down
the motherboard. The rest of the mounting holes should be used for the plastic
standoffs. If your case does not have a hole for a standoff, simply cut off the
bottom of the plastic standoff so that the flat portion rests on the metal. 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.

INST ALL

Plug in the power connector as shown.

The photos on the following page show the ATX power connector before
(Figure 1) and after (Figure 2) it has been plugged in.

The plastic clip on the power connector should lock over the plastic tab on the
onboard connector. You shouldn’t be able to plug the power connector in any
other way but just to be safe, make sure it looks like Figure 2 (next page). Make

warning

absolutely certain that you do not miss any pins because, if you do, you will
void your warranty and cause damage to yourself or your motherboard when

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Chapter 2

Board Installation

Figure 1

Figure 2

you turn the system on. After connecting the power, make sure the connector
is seated firmly into its socket so it will not become loose or fall off when the
computer is jostled or moved. Note: T yan recommends using an ATX power
supply that conforms to industry standard revision 2.01.

Next, connect your IDE cables (if you’re using IDE hard drives).

The colored stripe on the cable indicating pin 1 should face towards the rear of
the case (towards the ATX connectors).

In Figure 3 on the next page you can see how the IDE cables should look when
they are connected to your hard drive. Notice how Pin 1 (denoted by a red
stripe) is connected so that it is next to the power connector of the drive. In
most cases, this is the proper way of connecting your IDE cable to the hard
drive. Figure 4 shows the IDE cable properly connected to the motherboard.
Contact your hard disk drive manufacturer or documentation for more informa­tion.

Some symptoms of incorrectly installed HDDs are:

• Hard disk drives are not auto-detected: may be a Master/Slave

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Figure 3

problem or a bad IDE cable. Contact your vendor.

• Hard Disk Drive Fail message at bootup: may be a bad cable or lack of

power going to the drive.

• No video or beeps on

bootup: usually means
the cable is on
backwards.

• Hard drive lights are

constantly on: bad
IDE cable or defective
drives/motherboard.
Try another HDD.

• Hard drives do not

power up: check
power cables and
cabling. May also be a
bad power supply or
IDE drive.

Pin 1

INST ALL

S1846 Tsunami A TX

Figure 4

13

Chapter 2

Board Installation

Now that you have installed your IDE drives, your floppies are next.

Pin 1 on the floppy cable is usually denoted by a red or colored stripe down
one side of the cable (see Figure 5). Most of the current floppy drives on the
market require that the colored stripe be positioned so that it is right next to
the power connector. In most cases, there will be a key pin on the cable which
will force you to connect the cable properly .

Drive A: is usually attached to the end of the cable with the twist in it. Drive B:
is usually connected to the middle of the cable. Refer to your installation
instructions or call your dealer if you are unsure about attaching floppy drives.
Refer to Figure 5 below for a detailed anatomy of the floppy cable. Remember,
you can only have two floppy drives connected at any given time.

Figure 5

The colored stripe on the cable indicating pin 1 should face towards the rear of
the case (towards the ATX connectors), as with the IDE cables. Please refer to
your documentation for proper installation, or see Figure 4 on page 13.

Some symptoms of incorrectly installed floppies are:

• Floppy drives are not detected: usually caused by faulty cables, backward

cables, or a bad floppy or motherboard. Try another single floppy drive to
verify the problem or try another cable. Also, check to see if the onboard
floppy is enabled in the BIOS.

• Floppy Drive Fail message at bootup: the cable, floppy, or motherboard

may be faulty . T ry another cable or floppy drive to verify.

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14

• Light on the floppy is on constantly: a dead give-away that the cable is on

backwards. Reverse the cable at the motherboard end and try again.

Next are the Com and Printer ports.

Warning: When plugging in your keyboard and mouse, or when plugging

!

anything into a serial or Com port, make sure that the power is off. Connecting
these devices and ports while the power is on is called “hot plugging,” and

important!

may damage your system.

Figure 6 below shows the ATX double row connectors on this board. The Com
and Printer ports, as well as the other ports, are labeled.

INST ALL

Figure 6

Note: Only TY AN cables will work on this motherboard. If you are using an
existing case with old cables, your system may not function properly. Use
only TYAN-approved cables.

Connecting the USB and PS/2 ports.

This board includes ports for USB, PS/2 mouse, and PS/2 keyboard devices.
The location of these ports is shown in Figure 6 above. Note that, for this

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Chapter 2

Board Installation

board, the PS/2 mouse port is the upper PS/2 port, and the PS/2 keyboard port
is the lower PS/2 port.

The PS/2 connectors are probably quite familiar to you. The USB connectors,
however, may be foreign. The USB (Universal Serial Bus) is a versatile port.
This one port type can function as a serial, parallel, mouse, keyboard, or
joystick port. It is fast enough to support video transfer, and is capable of
supporting up to 127 daisy-chained peripheral devices. Close-ups of the USB
connector, as well as of the USB and PS/2 ports, are on the following page.

Figure 7 shows the USB ports and Figure 8 the PS/2 ports.

Figure 7 Figure 8

Installing your add-in cards is relatively simple but...

there are a few rules you need to follow when plugging in a card. In order to
assure proper operation and a quick installation, adhere to these guidelines:

• If you are going to install a PCI-Bus interface card on your system, be

aware that any one of the two PCI slots can support a Master or Slave

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16

device.

• NEVER force a card into a slot. If it doesn’t fit, look at the socket on the

!

important!

computer to make sure there are no wires or other obstructions to the slot.

• NEVER plug an ISA card into a PCI slot or a PCI card in an ISA slot. Y ou

will void your warranty and damage your system board if you do this.

• When plugging the card in, especially when installing long cards, try to

push the entire card in at one time. Don’t force one end of the card into
the socket first and then the other. This will create a rocking motion
between the card and the slot and it will damage the pins within the
socket.

• Make sure that the cards are seated securely into the slots.

• Before turning on the system, make sure no cards are touching each other

or are shorting.

If you follow these basic guidelines, there shouldn’t be any problems with
installation. However, if you do encounter any problems, have a qualified
professional install your cards for you or contact your card manufacturer.

Remember, always read the manuals and installation notes that come with the
adapter cards. They contain important information which will help you install
the components right, the first time.

Next, you need to install your memory.

Since TY AN 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 TY AN 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. T o make installation easy and trouble free,
get high quality parts. Some brands we recommend are Advantage Memory,
Corsair Microsystems, Millenium, Kingston Memory , QesT ec Incorporated,
Unigen, Micron T echnology, and Crucial T echnology. These DIMMs have
proven to be very stable on our boards and perform extremely well.

INST ALL

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Chapter 2

Board Installation

Figure 9

T o 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 9
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.

important!

T o 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 10 on the next page). To
remove your DIMM, simply pull the clips back, and pull up on the module.

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

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Figure 10

Finally, install your CPU.

Pentium II processors (233 through 450MHz) can be used on the Tsunami. Please
refer to page 27 for the correct CPU jumper settings for your board. Remember:

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

!

important!

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

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

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

INST ALL

Currently, Intel produces two types of Pentium II processors: the active (or
boxed) processor and the passive processor (see Figures 11 and 12 on the next
page). These two types of processors are essentially the same in design; the
only difference lies in their cooling methods. The active processor is equipped
with a cooling fan and heat sink, while the passive processor is equipped with
a heat sink alone. Both types of CPUs provide the user with the same perfor­mance, and both types can be installed in the Pentium II slot on the T sunami
board.

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Chapter 2

Board Installation

Figure 1 1 Figure 12

Installing CPU Retention Modules

Installation of a Pentium II processor requires a CPU retention module, which
is first secured onto the motherboard.

T o attach the retention module,

Figure 13

place the motherboard on a flat
surface. Locate the key pin on
one end of the Pentium II slot on
the board. Then carefully line up
the key notch on the retention
module with the key pin on the
Pentium II slot (the key pin on
the Pentium II slot indicates the
correct orientation of the CPU).

Drop the retention module
(Figure 14 below) down over the
Pentium II slot so that the
retention module sits flat against

Pentium II Slot Connector
and Key Pin

the motherboard. Tighten the
screws in a clockwise manner to secure the module to the board. W arning: Do

not overtighten the screws as you may damage the
module and/or the motherboard.

Installing the Active Processor

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 15 on the fol-

Figure 14

lowing page). This clicking sound indicates that the

20

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Figure 15

(see Figure 16 below).

CPU is fully locked into the retention module. If you have
an active processor, 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. FAN1) on the
motherboard. Plug the CPU’s cooling fan cable into the
cooling fan connector on the board. There will be a plas-

tic clip assembly similar to that of the A TX power connec­tor that will force you to connect the fan cable correctly

INST ALL

Figure 16

Installing the Passive Processor

The installation of the passive processor differs only slightly from that of the
active processor. Your passive CPU package should contain one CPU retention
module, one heat sink retention bracket with mounting locks, two mounting
attachments, and one heat sink lock.Install the retention module as explained in
the active processor section.

The heat sink mount (Figure 17 on the next page) has two pins on the bottom

S1846 Tsunami A TX

21

Chapter 2

Board Installation

and four pins on the top. Notice that the bottom two pins are of different sizes.
The size of the pins and the holes in the motherboard will determine the correct
orientation. When the bracket is correctly installed, the four pins on top will be
right next to the Pentium II CPU slot.

Insert the heat sink mount into the
holes on the motherboard. When
the bracket is properly inserted into
the holes on the motherboard, you

Figure 17

will hear a clicking noise.

Align the CPU with the CPU retention module. Make sure the heat sink is lined
up with the heat sink mount bracket. If you put the CPU in the wrong way , you
may damage the CPU, the motherboard, and/or the CPU socket. Slowly press
down on the CPU module until the CPU locks into place. Y ou will hear a
clicking noise when the CPU is locked securely into the module.

The heat sink lock (Figure 18) has four
notches which will correspond to the
four pins on the heat sink mounting
bracket. Gently slide the lock between

Figure 18

the heat sink and the heat sink mount­ing bracket until both sides of the lock are firmly secured. A clicking sound will
be heard when the lock is securely fastened to the heat sink mounting bracket.
T o remove the lock from the heat sink mounting bracket, gently press the ends
of the locks inward and pull.

Lock the heat sink mount to the board by inserting
the two mounting locks (Figure 19) into the pins of
the heat sink mounting bracket which are now below
the mainboard. There will be a click when the locks
are securely fastened.

Removing the CPU.

T o remove the CPU, move the locks to the center of

Figure 19

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.

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

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22

Y ou are done.

Other than checking the jumper settings and cable connections and putting
the case back on, you are done. Installing a new motherboard may sound
difficult, but by following these directions, you should have a fairly uneventful
time installing our products. If you do encounter problems, your dealer will be
able to help you, or you can consult one of our many technical support
resources (see page 7).

Setting 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. Jumpers and pins are connected by
slipping the blue plastic jumper connector overtop of two adjacent jumper
pins. The metal rod inside the plastic shell bridges the gap between the two
pins, completing the circuit. See the drawings below for examples of “on” and

“off” pins and jumpers.

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S1846 Tsunami A TX

2 pin jumpers

off on

3 (or more) pin jumpers

1-2 2-3 open

1
2
3

23

1
2
3

1
2
3

Chapter 3

Onboard Resource Settings

chapter 3

Onboard Resource Settings

Quick References for Jumpers

The tables on the following pages will help you set the jumpers for CPU speed,
wake on events, and external connector pin assignments among other things.
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 facing page.

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24

Map of Motherboard Jumpers

Mouse

Keyboard

National

LM75

1

FAN1

JP2

3 volt

1

lithium
battery

USB1

COM1

COM2

Line in

Microphone in Speaker out

USB2

Joystick

J13

Printer Port

JP17

1

1

J11

J10

1

FAN2

1

Ensoniq

Audio PCI

CON3

1

1

CON2

1

JP4

Intel 82443BX

1

J9

CPU slot (Slot One type)

DIMM bank 2

DIMM bank 1

AGP port

PCI slot 1

PCI slot 2

PCI slot 3

Intel

PCI slot 4

82371EB

ATX power connector

1

DIMM bank 3

Secondary IDE connector

1

JP10
JP11

JP8

JP12

1

JP13

JP7

1

EXTSMI

Floppy drive connector

1

Primary IDE connector

J7

J8

ONBOARD

PCI slot 5

ISA slot 2

Flash BIOS

ISA slot 1

National

LM79

FAN3

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

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25

1

Chapter 3

Onboard Resource Settings

SEC slot (Slot One type)

PS/2 ports

USB ports

COM2 LPT1 COM1

Joystick

Audio ports

Ensoniq 1371 AudioPCIAC97codec

Intel 443BX

LM75

3 DIMM slots

AGP port

BiColor LED

National Super I/O

5 PCI slots

2 ISA slots

26

LM79

http://www.tyan.com

Intel PIIX4e

OnBoard

Speaker

AMIBIOS

CPU Settings for 66MHz Bus

deepSkcolCtluM01PJ11PJ21PJ31PJ
zHM332
zHM662
zHM003
zHM333

5.3xNOFFOFFONO

4xFFONONONO

5.4xFFONOFFONO

5xFFOFFONONO

CPU Settings for 100MHz Bus

deepSkcolCtluM01PJ11PJ21PJ31PJ
zHM053
zHM004
zHM054

5.3xNOFFOFFONO

4xFFONONONO

5.4xFFONOFFONO

The CPU speed is controlled by setting the bus speed (described in BIOS
setup) and by setting the multiplier with the jumpers described above that are
appropriate for your CPU and memory . Y ou must have a 100MHz processor to
run at a bus speed of 100MHz. Tyan does not recommend and is not respon­sible for functionality or damage to components caused by operating a CPU,

!

memory or any bus at higher than rated speeds (overclocking).

important!

Onboard Sound Enable

dnuoSelbanEelbasiD

71PJ

FFONO

ONBOARD

JP2

Hardware CMOS & Password Reset

tluafeDteseR

2PJ

2-13-2

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

S1846 Tsunami A TX

JP10, JP11, JP12, JP13

JP17

27

Chapter 3

Onboard Resource Settings

instructions below.

1.

2.

3.

procedure

1. Power off the system

2. Set jumper JP2 to pins 2 and 3 (see previous page for
location of JP2).

3. W ait for 2 seconds, then return jumper JP2 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.

InfraRed/Floppy Drive Settings

DDF/RI4PJ7PJ8PJ

)tluafeD(DDF1/RI1

NO3-22-1

FFO2-13-2

DDF2

J8 External Pin Assignments

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

noitcnuF

tnemngissA

rewoP

ffO/nO

ffo/no=1

BSV5=2

deRarfnIDELDDHDELrewoP

V5=6

XRRI=8

DNG=9

XTRI=01

Other Pin Assignments

12 3

JP2

JP4

J8

JP7, JP8

teseR
hctiwS

V5=31

-DEL=51

+DEL=61

DELpeelS=81

DELrewoP=02

DNG=22

teseR=32

rekaepS

V5=42

lanretnI=62

rekaepS

-rekaepS=72

3-1NAF

no-ekaW(3NOC

)NAL

DNGCCVrotinoMnaF

V5ybdnatSDNG)hgiHevitcA,nOrewoP(ekaW

http://www.tyan.com

28

Soft Power Connector

FAN1

The Soft Power Connector is located
on pins 1 and 2 of jumper block J8.
The T sunami uses the PIIX4e chip for
power management, including turning
on and off the system. If the Power
Button Function option in the Power
Mangement 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 in 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 four seconds.

FAN2

CON3

J8

FAN3

Speaker Connector Installation

The Tsunami provides a 4-pin header to connect the speaker. The speaker is
connected to pins 24-27 of jumper block J8. A jumper on pins 26-27 is the
default setting for the onboard speaker.

Hardware Reset Switch Connector
Installation

ONBOARD

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. The Reset switch is a 2-pin
connector and should be installed on pins 22 and 23 of jumper block J8.

External SMI

The EXTSMI (External System Management Interface) connector, JP16, is used
by some plug-in cards. Certain applications associated with these plug-in
cards use the interface for hardware control and queries.

S1846 Tsunami A TX

29

Chapter 3

Onboard Resource Settings

Chassis Intrusion Alarm Connector

The J7 connector is an intrusion alarm, that can be connected to the system
chassis. When active (J7 is closed), this alarm will alert the system administra­tor anytime someone opens the system’s case.

Ensoniq Audio Connectors (S1846SLA only)

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 1371 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
(J13) is for CD-ROMs.

Windows 95 Users:

!

You may encounter problems with some of the devices in the Intel 82371EB

important!

chipset. Neither the PCI Bridge nor the PCI Universal Serial Bus device IDs for
this chipset (also called PIIX4e) are recognized by Windows 95. This is a soft­ware problem, not a hardware problem, and can be easily remedied by either
upgrading to Windows 98 or downloading the 82371EB patch found at http://
www .tyan.com/html/drivers.html or at ftp://download.intel.com/design/pcisets/
busmastr/setupex.exe. Note that USB requires Windows 95 OSR 2.1 or above;
please contact Microsoft for the USB update.

CMOS RTC

The 440BX AGPset includes a Real Time
Clock (RTC) circuit, which provides the date
and time for the system. If the external
battery for the RTC is low , it will prevent
your system from POSTing, and you will
not get a display.. If your battery is running
low ,you will need to replace it with a new
3V lithium battery (Sony CR2032).

30

Battery

J9

J13, J11

J10

http://www.tyan.com

Flash EEPROM

The T sunami uses flash memory to store BIOS programs. It can be updated as
new versions of the BIOS become available. Y ou can upgrade your BIOS easily
using the flash utility (see page 65).

RAM Installation

The T sunami uses a 64-bit data path from memory to CPU and can accommo­date up to 768MB of SDRAM. The 168-pin DIMMs must be of the 3.3V,
unbuffered variety . The position of the notch in the DRAM key position will
tell you whether or not a DIMM is unbuffered (see the figure below). All
installed memory will be automatically detected, so there is no need to set any
jumpers.

ONBOARD

Buffered

Unbuffered

168-pin DIMM

RFU

Some details of memory installation:

• One unbuffered DIMM must be installed for the system to POST.

• The mainboard supports 8MB, 16MB, 32MB, 64MB, 128MB, and 256MB

SDRAM DIMM modules.

• 256MB Registered SDRAM is supported, but can not be mixed with non-

registered SDRAM.

Cache Memory

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

S1846 Tsunami A TX

31

Chapter 3

Onboard Resource Settings

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

1knaBMMID2knaBMMID3knaBMMIDlatoT

1xBM800BM8
1xBM81xBM80BM61
1xBM81xBM81xBM8BM42

1xBM611xBM81xBM8BM23
1xBM611xBM611xBM8BM04
1xBM611xBM611xBM61BM84
1xBM231xBM611xBM61BM46
1xBM231xBM231xBM61BM08
1xBM231xBM231xBM23BM69
1xBM461xBM231xBM23BM821
1xBM461xBM461xBM23BM061
1xBM461xBM461xBM46BM291

1xBM8211xBM461xBM46BM652
1xBM8211xBM8211xBM46BM023
1xBM8211xBM8211xBM821BM483
1xBM6521xBM6520BM215
1xBM6521xBM6521xBM652BM867

Frequently Asked Questions

Q: Why don’t I get a display after I put in my old DIMM module?
A: The 440BX chipset requires the memory manufacturer to program an

EEPROM chip with SPD (Serial Presence Detection) on the module in order for
the BIOS to program the 440BX’s timing registers properly . Your DIMM may
not have the EEPROM chip on the module, or the EEPROM may not contain
the correct program. Check with your memory vendor for details. The figure on
the following page shows a DIMM module with an EEPROM chip.

http://www.tyan.com

32

EEPROM

RFU

Unbuffered

Buffered

168-pin DIMM

Q: My system sometimes becomes unstable. How should I check the system?
A: The first thing to do is to check and see if you have any device conflict in

address, IRQ, or DMA. If you are using Windows 95, the Device Manager is a
good place to start. Please consult your operating system manual for details.
Second of all, slowing down the memory timing in the BIOS’s chipset setup
section will help the situation, as well. Many memory modules are not suitable
for high performance systems and are probably the main source of your
problem.

Q: Can I use EDO DIMMs on this motherboard?
A: No. The Intel 440BX AGPset does not support EDO memory . The 440BX

AGPset supports bus speeds of 100MHz, and EDO memory does not. You
must use SDRAM (which does support 100MHz bus speeds) on this board.

Q: What is AGP?
A: AGP (Accelerated Graphics Port) is a new bus architecture for 3D graphics.

The AGP slot eliminates the PCI bandwidth bottleneck by bypassing the PCI
interface and accessing the system memory directly. Currently, the AGP
supports 1X and 2X modes, which yield bandwidths of 264MB/s (at 33MHz
bus speed) and 533MB/s (at 66MHz bus speed), respectively. Compare this
with the mere 132MB/s (at 33MHz bus speed) that you get with the PCI bus.

ONBOARD

Q: Does my operating system support AGP?
A: Currently , only Windows 98 and W indows NT 5.0 will have built-in support

for AGP . Some AGP cards require W indows 95 OSR2.1 or a special driver from
Intel. Please check with your graphics vendor for more details.

S1846 Tsunami A TX

33

Chapter 4

BIOS Configuration

chapter 4

BIOS Configuration

The AMIBIOS Setup screen is shown below.

AMI BIOS EASY SETUP UTILITY Ver.1.16
(c)1998 American Megatrends, Inc. All Rights Reserved
Main Advanced Security Exit

System Date Thu Oct 15 1998 Setup Help
System Time 12:55:37

Floppy Drive A 1.44 MB 3½ Day: 01 - 31
Floppy Drive B Not Installed Year: 1901 - 2099

Primary IDE Master Auto
Primary IDE Slave Auto
Secondary IDE Master Auto
Secondary IDE Slave Auto

Auto-Detect Hard Disks [ Enter ]

Boot Sector Virus Protection Disabled

ESC:Exit Enter:Select F5:Setup Defaults F6:Original Values F10:Save & Exit

34

Month: Jan - Dec

- Previous Item
¯ Next Item

Select Menu

®¬

http://www.tyan.com

You can select a Setup option by using the following keyboard keys:

Key Function

Tab Moves from one box to the next

Arrow keys Changes sele cti ons wi t hin a box

Enter O pe n s highli ght ed sele cti on

The pages which follow contain explanations of the settings for the AMIBIOS
Setup menus. Drawings have been included for ease of reference. Overall, the
AMIBIOS Setup program is easy to use, and fairly intuitive. Note that the
graphics in the manual are simpler than those that appear on your screen.

Main Setup

Select the AMIBIOS Setup options below by choosing Main Setup from the
AMIBIOS Setup main menu. The Standard Setup menu screen is shown below .

AMI BIOS EASY SETUP UTILITY Ver.1.16
(c)1998 American Megatrends, Inc. All Rights Reserved
Main Advanced Security Exit

System Date Fri Jan 1 1999 Setup Help
System Time 12:55:37

Floppy Drive A 1.44 MB 3½ Day: 01 - 31
Floppy Drive B Not Installed Year: 1901 - 2099

Primary IDE Master Auto
Primary IDE Slave Auto
Secondary IDE Master Auto
Secondary IDE Slave Auto

Auto-Detect Hard Disks [ Enter ]

Boot Sector Virus Protection Disabled

ESC:Exit Enter:Select F5:Setup Defaults F6:Original Values F10:Save & Exit

S1846 Tsunami A TX

35

Month: Jan - Dec

- Previous Item
¯ Next Item

Select Menu

®¬

BIOS

Chapter 4

BIOS Configuration

System Date/Time

You can type the date and time in directly, or select the portion of the date or
time that you want to modify and adjust it using the - ¯ cursor keys. The
clock runs on a 24-hour cycle (i.e. 1:00 PM is 13:00).

[ System Date Setting ]

MM/DD/YY: Jan 1 1998

[ System Time Setting ]

Current Time 12:00:00

Floppy Drive A: and B:

Move the cursor to these fields via the arrow keys and
select the floppy type. The settings are 360KB 5¼ inch,

1.2 MB 5¼ inch, 720KB 3½ inch, 1.44MB 3½ inch, or

2.88MB 3½ inch. If you are not sure what type of
floppy drive you have, consult the documentation that
came with your drive.

OPTIONS

Not Installed
360 KB 5¼

1.2 MB 5¼
720 KB 3½

1.44MB 3½

2.88MB 3½

Primary Master , Primary Slave, Secondary Master , Secondary Slave

Select these options to configure the various drives. A screen with a list of
drive parameters appears.

AMI BIOS EASY SETUP UTILITY Ver.1.16
(c)1998 American Megatrends, Inc. All Rights Reserved
Main

PRIMARY IDE MASTER SETUP Setup Help

IDE Device Configuration AUTO 1-46: Predefined types

Cylinders by User
Heads AUTO: Set Parameters
Write Precompensation automatically
Sectors CD-ROM: Use for ATAPI
Maximum Capacity CD-ROM drives

LBA Mode Double click [AUTO] to
Block Mode set all HDD parameters
Fast Programmed I/O Modes automatically
32 Bit Transfer Mode ON

USER: Set Parameters

OR

ESC:Back Enter:Select -¯:Select Items F5:Setup Defaults F6:Original Values

http://www.tyan.com

36

IDE Device Configuration: T o have the BIOS autodetect the IDE drive, select
Auto. Otherwise, you may choose one of the 46 drive types offered, or enter
the parameters yourself (see Entering Drive Parameters on page 42). Consult
the table below to see how to configure various drive types yourself.

epyTerugifnoCotwoH

ISCS

EDI

MOR-DC

MFMdradnatS

MFMdradnatS-noN

tceleS epyT tceleS. dellatsnItoN ehT.neercsretemarapevirdehtno

otuoywolladluohsrerutcafunamISCSehtybdedivorpsrevirdISCS

.evirdISCSehterugifnoc

tceleS epyT tceleS. otuA .sretemarapehtenimretedSOIBIMAtelot

nokcilC KO tceleS.sretemarapevirdehtsyalpsidSOIBIMAnehw

edoMABL tceleS. nO nahtretaergyticapacasahevirdehtfi

.BM045
tceleS edoMkcolB tceleS. nO .srefsnartatadedomkcolbwollaot
tceleS edoMtiB-23 tceleS. nO tceleS.srefsnartatadtib-23wollaot

eht edoMOIP tcelesottsebsitI. otuA otSOIBIMAwollaot

tonsitahtedomOIPatcelesuoyfI.edomOIPehtenimreted

uoyfI.ylreporpkrowtonlliwevirdeht,evirdEDIehtybdetroppus

OIPtceles,edomOIPs'evirdehtwonkuoytahtniatrecyletulosbaera

.etairporppasa,4-0edom

tceleS epyT tceleS. MORDC nokcilC. KO syalpsidSOIBIMAnehw

.sretemarapevirdeht

tahtemehcsgnidocnenaesuhcihwsEDIredloerasevirdMFM(

tceleS).mooregarotssseldnasseccaatadrewolssecudorp epyT .

tahtepytevirdehttceleS.sretemarapevirdehtwonktsumuoY

.sretemaraps'evirdruoysehctamyltcaxe

tceleS epyT evirdehthctamtonodsretemarapevirdehtfI.

tceles,64-1sepytevirdrofdetsilsretemarap resU ehtretnedna

.sretemarapevirdksiddrahtcerroc

LBA/Large Mode: These modes make it possible for the BIOS to take advan­tage of the additional space on drives which are larger than 504MB. This can
be autodetected (when you select Auto for Type), or you can turn the modes
On or Off yourself.

BIOS

Block Mode: If On, Block Mode automatically detects the optimal number of
block read/writes per sector that the drive can support.

S1846 Tsunami A TX

37

Chapter 4

BIOS Configuration

Fast Programmed I/O Modes: Programmed Input/Output is a method of
transmitting data between devices that uses the system’s CPU as part of the
data path. There are 6 modes - 5 with their own transmission speed and 1 auto
mode. T o use modes 3 and 4, you must be using an Enhanced IDE drive.

edoMOIP

otuA

03.3

12.5

23.8

31.11

46.61

refsnarTataD
)spBM(etaR

32bit T ransfer Mode: If On, allows for the transmission of 32 bits in parallel

(i.e. at the same time). If Off, only 16 bits will be transmitted in parallel.

Entering Drive Parameters

If you select User for the drive T ype, you can enter the hard disk drive
parameters yourself. The drive parameters are as follows:

retemaraPnoitpircseD

epyT

)lyC(srednilyC.evirdksidehtnisrednilycforebmunehT

)dH(sdaeH.sdaehforebmunehT

noitasnepmocerPetirW

)PW(

)ceS(srotceS

eziS

.)rotcesrep

.)sepytevirdfoelbatarofegap

etirW.setyb215dlohllitstsumrotceshcae,teY.sehsinimidretemaid

.snigebnoitasnepmocerp

.kcartrepsrotceseromneveevahsevirdEDIdnaISCS.kcart

ehtsemitsdaehforebmunehtsievirdehtfoyticapacdettamrofehT

txenehtees(sretemarapnoitacifitnediniatrechtiwevirdarofrebmunehT

kcartehtsarellamsylevissergorpstegrotcesafoezislacisyhplautcaehT

lacisyhpehtrofsetasnepmocksiddrahehtnoyrtiucricnoitasnepmocerp

renninosrotcesroftnerrucetirwehtgnitsoobybezisrotcesniecnereffid

etirwerehwecafrusksidehtnorebmunkcartehtsiretemarapsihT.skcart

.kcartrepsrotces71evahsevirdMFM.kcartrepsrotcesforebmunehT

repsrotces43evahsevirdIDSE.kcartrepsrotces62evahsevirdLLR

setyb(215semitkcartrepsrotcesforebmunehtsemitsrednilycforebmun

38

http://www.tyan.com

Auto-Detect Hard Disks

This option lets the system detect your hard disk(s) automatically for your
convenience.

Boot Sector Virus Protection

The available settings for this option are ‘Enable’ and ‘Disable’.

Default Settings

Every option in AMIBIOS Setup contains two default values: a Fail-Safe
default and the Optimal default value. You can also choose to restore the
original BIOS settings (i.e. those that your board came with) at any time.
These options can be found in the ‘Exit’ menu.

Optimal Defaults

The Optimal default values provide optimum performance settings for all
devices and system features.

Fail-Safe Defaults

The Fail-Safe default settings consist of the safest set of parameters. Use them
if the system is behaving erratically . They should always work but do not

provide optimal system performance characteristics.

AMI BIOS EASY SETUP UTILITY Ver.1.16
(c)1998 American Megatrends, Inc. All Rights Reserved

Exit

Exit Saving Changes [ Enter ] Setup Help
Exit Discarding Changes [ Enter ]
Load Optimal Settings [ Enter ] Load configuration
Load Fail Safe Settings [ Enter ] settings giving
Load Original Values [ Enter ] highest performance.

BIOS

- Previous Item
¯ Next Item

Select Menu

®¬

ESC:Exit Enter:Select F5:Setup Defaults F6:Original Values F10:Save & Exit

S1846 Tsunami A TX

39

Chapter 4

BIOS Configuration

Advanced CMOS Setup

The Advanced Setup options included in the AMIBIOS Setup for the Thunder
X are described in this chapter. Select Advanced Setup from the AMIBIOS
Setup main menu to display the Advanced Setup options.

AMI BIOS EASY SETUP UTILITY Ver.1.16
(c)1998 American Megatrends, Inc. All Rights Reserved
Advanced

Advanced CMOS Setup [ Enter ] Setup Help
Advanced Chipset Setup [ Enter ]
Power Management Setup [ Enter ] Advanced CMOS setup
Plug and Play Setup [ Enter ] for configuring system
Peripheral Setup [ Enter ] options
Change Language Setting English

- Previous Item
¯ Next Item

Select Menu

®¬

ESC:Exit Enter:Select F5:Setup Defaults F6:Original Values F10:Save & Exit

Advanced CMOS Setup Default Settings Chart

Setting Option Optimal Default Fail-Safe Default

Q uick Boot Disable d Di sa bled
P r imary M as ter A R M D E mulated as Auto Auto
P r imary S l ave A R M D E mulated as Auto A ut o
S econdar y M as ter AR M D E mulat ed as Auto A uto
S econdar y S l ave A R M D E mulat ed as Auto Auto
1st B o ot D evice F l oppy F lo ppy
2nd Boot Devic e 1st IDE-HDD 1st IDE-HDD
3rd Boot Device AT AP I CDROM AT AP I CDROM
T ry O th e r Boot Devic e s Yes Yes
F loppy Acces s Contr ol R ead-Wr ite R ead-Write
Hard Dis k Acces s Control Read-Write Read-Wri te

40

http://www.tyan.com

Settings Chart (Continued)

Setting Option Optimal Default Fail-Safe Default

S.M. A.R.T. for Hard Disks Disa bled Disabled
Boot Up Nu m -Loc k O n O n
P S /2 M ous e S uppo rt E nabl ed E nabl ed
Primary Display VGA/EGA VGA /E GA
P as s word Check S etup S etup
Boot To O S/2 No No
Inte rn al Ca c h e WriteBack Write Bac k
S ys tem B IOS Cacheable E nabled Dis abled
Cache B us E CC E nabled Enabled
Defa u lt Primary Vide o AGP AGP
MPS Revi sio n 1. 1 1.1
C000,16K Shadow Ca che d Cac h e d
C400,16K Shadow Ca che d Cac h e d
C800,16K Shadow Dis a bled Disabled
CC 0 0 ,16K Shadow Disa bled Disa bled
D000,16K S hadow Dis a bled Disab le d
D400,16K S hadow Dis a bled Disab le d
D800,16K S hadow Dis a bled Disab le d
DC0 0 ,16K Shadow Disabled Di sabled

Advanced Setup

BIOS

Quick Boot

Set this option to Enabled to instruct AMIBIOS to boot quickly when the
computer is powered on. This option replaces the old Above 1 MB Memory
Test Advanced Setup option. The settings are:

gnitteSnoitpircseD

.yromemmetsysllastsetSOIBIMA

delbasiD

.desserpneebsahyekehtfiputeSSOIBIMAsnurdnasserpyek>leD<arofskcehcSOIBIMA

.BM1evobayromemmetsystsettonseodSOIBIMA

delbanE

.egassem

S1846 Tsunami A TX

41

ehtrofyaledonsierehtesuaceb,toobmetsystaputeSSOIBIMAnurtonnacuoY puteSnurot>leD<tiH

5.rofstiawSOIBIMA.evirdksiddrahEDIehtmorflangisYDAERarofsdnoces04otpustiawSOIBIMA

.niagaydaertegotemitevirdEDIehtwollaotevirdEDIehtotlangisTESERagnidnesretfasdnoces

langisYDAERafI.evirdksiddrahEDIehtmorflangisYDAERarofsdnoces04otputiawtonseodSOIBIMA

tonseodSOIBIMA.evirdtahterugifnoctonseodSOIBIMA,evirdEDIehtmorfyletaidemmideviecertonsi

.niagaydaertegotemitevirdEDIehtwollaotevirdEDIehtotlangisTESERagnidnesretfasdnoces5.roftiaw

Chapter 4

BIOS Configuration

Pri/Sec Master/Slave ARMD Emulated as

AT API Removable Media Disks (e.g. ZIP drives) are hybrid drives. They are
removable, and can be used as floppy drives, but also have great capacity and
so are sometimes used as hard drives. These four options ensure that, if you
have an ARMD attached as a master or slave device, it can be properly
detected by the system. The settings are Auto, Floppy, and Hard Disk.

1st Boot Device

This option sets the type of device for the first boot drive that the AMIBIOS
attempts to boot from after AMIBIOS POST completes. The settings are
Disabled, 1st IDE-HDD, 2nd IDE-HDD, 3rd IDE-HDD, 4th IDE-HDD, Floppy,
ARMD-FDD, ARMD-HDD, A T API CDROM, SCSI, NETWORK, and I2O.

2nd Boot Device

This option sets the type of device for the second boot drive that the
AMIBIOS attempts to boot from after AMIBIOS POST completes. The
settings are Disabled, 1st IDE-HDD, 2nd IDE-HDD, 3rd IDE-HDD, 4th IDE­HDD, Floppy , ARMD-FDD, ARMD-HDD, A T API CDROM, and SCSI.

3rd Boot Device

This option sets the type of device for the third boot drive that the AMIBIOS
attempts to boot from after AMIBIOS POST completes. The settings are
Disabled, 1st IDE-HDD, 2nd IDE-HDD, 3rd IDE-HDD, 4th IDE-HDD, Floppy,
ARMD-FDD, ARMD-HDD, A T API CDROM.

T ry Other Boot Devices

Set this option to Yes to instruct AMIBIOS to attempt to boot from any other
drive in the system if it cannot find a boot drive among the drives specified in
the 1st Boot Device, 2nd Boot Device, and 3rd Boot Device options. The
settings are Yes or No.

Floppy Access Control

This option specifies the read-write access that is set when booting from a
floppy drive. The settings are Read-Write or Read-Only .

Hard Disk Access Control

This option specifies the read-write access that is set when booting from a
hard disk drive. The settings are Read-Write or Read-Only.

S.M.A.R.T . for Hard Disks

Set this option to Enabled to permit AMIBIOS to use the SMAR T (System

http://www.tyan.com

42

Management and Reporting Technologies) protocol for reporting server
system information over a network. Enabling this feature allows you to back up
your data when your hard disk is about to fail. The settings are Enabled or
Disabled.

Boot Up Num-Lock

Set this option to Off to turn the Num Lock key off when the computer is
booted so you can use the arrow keys on both the numeric keypad and the
keyboard. The settings are On or Off.

PS/2 Mouse Support

Set this option to Enabled to enable AMIBIOS support for a PS/2-type mouse.
The BIOS will allocate IRQ12 for the PS/2 mouse. The settings are Enabled or
Disabled.

Primary Display

This option configures the type of monitor attached to the computer. The
settings are Absent, VGA/EGA, CGA40x25, CGA80x25, or Mono.

Password Check

This option enables password checking every time the system boots or when
you run AMIBIOS Setup. If Always is chosen, a user password prompt
appears every time the computer is turned on. If Setup is chosen, the password
prompt appears if AMIBIOS is executed.

Boot T o OS/2

Set this option to Yes if you are running an OS/2 operating system and using
more than 64 MB of system memory on the motherboard. The settings are Y es
or No.

Internal Cache

This option sets the type of caching algorithm used by the L1 internal cache
memory on the CPU. The settings are Disabled, WriteThru, or W riteBack.

System BIOS Cacheable

When set to Enabled, the contents of the F0000h system memory segment can
be read from or written to cache memory. The contents of this memory segment
are copied from the BIOS ROM to system RAM for faster execution. The
settings are Enabled or Disabled. The Optimal default setting is Enabled.

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BIOS

Chapter 4

BIOS Configuration

Cache Bus ECC

When Enabled, this option permits ECC error checking on the L2 cache bus.
This ensures that cached data is not improperly altered. The settings are
Enabled or Disabled.

Default Primary Video

This option sets the primary video card as either AGP (Accelerated Graphics
Port) card or a regular PCI video card. The settings are AGP or PCI.

MPS Revision

This option sets the Multi-Processor Symmetry . Then settings are 1.1 or 1.4.

C000,16K Shadow and C400,16K Shadow

These options specify how the 32 KB of video ROM at C0000h is treated. The
settings are:

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C800,16K Shadow; CC00,16K Shadow; D000,16K Shadow; D400,16K
Shadow; D800, 16K Shadow; and DC00,16K Shadow

These options enable shadowing of the contents of the ROM area named in
the option. The ROM area not used by ISA adapter cards is allocated to PCI
adapter cards. The settings are:

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44

retsafrofMARotMORmorf)dewodahs(deipoceraaeraMORdetangisedehtfostnetnocehT

rootnettirwebnacdnaMARotMORmorfdeipoceraaeraMORdetangisedehtfostnetnocehT

Chipset Setup

Choose Chipset Setup on the AMIBIOS Setup main menu. All Chipset Setup
options are then displayed. AMIBIOS Setup can be customized. AMIBIOS
Setup can be customized via AMIBCP . See the AMIBIOS Utilities Guide for
additional information.

AMI BIOS EASY SETUP UTILITY Ver.1.16
(c)1998 American Megatrends, Inc. All Rights Reserved
Advanced

Advanced CMOS Setup [ Enter ] Setup Help
Advanced Chipset Setup [ Enter ]
Power Management Setup [ Enter ] Advanced Chipset setup
Plug and Play Setup [ Enter ] for configuring
Peripheral Setup [ Enter ] chipset features
Change Language Setting Engish

- Previous Item
¯ Next Item

Select Menu

®¬

ESC:Exit Enter:Select F5:Setup Defaults F6:Original Values F10:Save & Exit

BIOS

Advanced Chipset Setup Default Settings Chart

Setting Option Optim al Default Fail-Safe Default

USB Func tion Disab led Disab led

* US B KB /M ous e L egacy S uppo rt Dis abled D is abl ed
* P ort 6 4/60 E mul ati on Di s abled Dis abled

S ER R # Disabled Dis abled
PER R # Disabled Dis abled
WSC# H a nd shake Enabled Enabled
USWC Write Pos t Ena ble d Ena ble d
Master Latency Timer (C lks) 64 64
M ulti-Trans Timer (Cl ks) 32 32
PCI1 to PCI0 A ccess Disabled Disabled
Method of Mem ory De t ec tion Auto & SPD Aut o & SP D
DRAM In t egrit y Mode N/ A N/ A

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Chapter 4

BIOS Configuration

Settings Chart (continued)

Setting Option Optimal Default Fail-Safe Default

D R A M R ef r es h R at e 15 .6 u s 15 .6 u s
Memory Hole Disabled Di sa bled
SD RAM RAS# to CAS# Del ay 3 SCLK s 3SCL Ks
SD RAM RAS# Precharge 3 SCLKs 3SCL K s
P ower D own S D R A M D is abl ed D i s abl ed
A CPI Co nt rol Regi ster Disabl ed D isabl ed
G ated Cloc k Disable d Dis ab led
Graphic s Aperture Size 64 MB 64 MB
S earch for M DA R es ources Yes Yes
AGP Mult i-Trans Timer (A GP Cl ks) 32 Disabl ed
A GP L ow-Priority Ti mer (Clks) 16 Disabl ed
AG P SERR Di sabled Disa bled
A GP Parity Error Respo nse D isabl ed Disabled
8b it I/O Recovery Time Dis a ble d Disabled
16bit I/O R ecovery T ime Di s abled Dis abled
PIIX4 S ERR # Disable d Dis a ble d
USB Pass ive Release Ena ble d Ena ble d
PIIX4 P a ss ive Rele ase E nab led Ena ble d
PIIX4 Dela ye d Tra n saction Disab led Disable d
T ype F DM A B uffer Contr ol1 Di s abled Dis abled
T ype F DM A B uffer Contr ol2 Dis abled D is abl ed
DMA-0 T ype Normal ISA Norma l ISA
DMA-1 Typ e Normal ISA Normal ISA
DMA-2 T ype Normal ISA Norma l ISA
DMA-3 T ype Norma l ISA Normal ISA
DMA-4 T ype Normal ISA Norma l ISA
DMA-5 T ype Normal ISA Norma l ISA
DMA-6 T ype Normal ISA Norma l ISA

* Setting option not selectable.

USB Function

Set this option to Enabled to enable USB (Universal Serial Bus) support. The
settings are Enabled or Disabled.

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46

USB KB/Mouse Legacy Support

Set this option to Enabled to enable support for older keyboards and mouse
devices if the USB Function option is set to Enabled. The settings are Enabled
or Disabled.

Port 64/60 Emulation

Setting this option to Enabled allows a USB keyboard to act like a legacy
keyboard. If this option is not Enabled, USB keyboard lights will not work
under Windows NT . W ith other operating systems, a USB keyboard will work
normally with this option Disabled. The settings are Enabled or Disabled.

SERR#

Set this option to Enabled to enable the SERR# signal on the bus. The settings
are Enabled or Disabled.

PERR#

Set this option to Enabled to enable the PERR# signal on the bus. The settings
are Enabled or Disabled. The Optimal and Fail-safe default settings are
Disabled.

WSC# Handshake

Set this option to Enabled to enable handshaking for the WSC# signal.
Handshaking is a form of encryption; see the Glossary for more information.
The settings are Enabled or Disabled.

BIOS

USWC Write Post

This option sets the status of USWC posted writes to I/O. USWC is a type of
memory that is used by VGA devices. The settings are:

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BX Master Latency Timer (Clks)

This option specifies the master latency timer (in PCI clocks) for devices in the
computer. The settings are Disabled, 32, 64, 96, 128, 160, 192, or 224.

Multi-T rans Timer (Clks)

This option specifies the multi-trans latency timings (in PCI clocks) for devices
in the computer. The settings are Disabled, 32, 64, 96, 128, 160, 192, or 224.

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Chapter 4

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PCI1 to PCI0 Access

Set this option to Enabled to enable access between two different PCI buses
(PCI1 and PCI0). The settings are Enabled or Disabled.

Method of Memory Detection

This option determines how your system will detect the type of system
memory you have installed. Options are Auto+SPD or Auto only .

DRAM Integrity Mode

This option sets the type of system memory checking. The settings are:

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DRAM Refresh Rate

This option specifies the interval between refresh signals to DRAM system
memory . The settings are 15.6 us (microseconds), 31.2 us, 62.4 us, 124.8 us, or

249.6 us.

Memory Hole

This option specifies the location of an area of memory that cannot be
addressed on the ISA bus. The settings are Disabled, 512KB-640KB, or 15MB­16MB.

SDRAM RAS# to CAS# Delay

This option specifies the length of the a inserted between the RAS and CAS
signals of the DRAM system memory access cycle if SDRAM is installed. The
settings are Auto, 2 SCLKs or 3 SCLKs. The Optimal default setting is Auto.

SDRAM RAS# Precharge

(CHANGE) This option specifies the length of the RAS precharge part of the
DRAM system memory access cycle when SDRAM system memory is
installed in this computer. The settings are Auto, 2 SCLKs, or 3 SCLKs.

Power Down SDRAM

If this option is set to Enabled, the SDRAM Power Down feature is enabled.
The settings are Enabled or Disabled.

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48

ACPI Control Register

Set this option to Enabled to enable the ACPI (Advanced Configuration and
Power Interface) control register. The settings are Enabled or Disabled. The
Optimal and Fail-safe default settings are Enabled.

Gated Clock

Set this option to Enabled to enable the gated clock. The settings are Enabled
or Disabled.

Graphics Aperture Size

This option specifies the amount of system memory that can be used by the
Accelerated Graphics Port (AGP). The settings are 4 MB, 8 MB, 16 MB, 32 MB,
64 MB, 128 MB, or 256 MB.

Search for MDA Resources

Set this option to Yes to let AMIBIOS search for MDA resources. The settings
are Y es or No.

AGP Multi-T rans Timer (AGP Clks)

This option sets the AGP multi-trans timer. The settings are in units of AGP
Clocks. The settings are Disabled, 32, 64, 96, 128, 160, 192, or 224.

AGP Low-Priority Timer (Clks)

This option sets the AGP low priority timer. The settings are in units of AGP
Clocks. The settings are Disabled, 16, 32, 48, 64, 80, 96, 112, 128, 144, 176, 192,
208, 224, or 240.

BIOS

AGP SERR

Set this option to Enabled to enable the AGP SERR signal. The settings are
Enabled or Disabled.

AGP Parity Error Response

Set this option to Enabled to enable AGP parity error response. The settings
are Enabled or Disabled.

8bit I/O Recovery Time

This option specifies the length of a delay inserted between consecutive 8-bit
I/O operations. The settings are Disabled and from 1 to 8 Sysclk (system
clocks) in increments of one.

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Chapter 4

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16bit I/O Recovery Time

This option specifies the length of a delay inserted between consecutive 16-bit
I/O operations. The settings are Disabled and from 1 to 4 Sysclk (system
clocks) in increments of one.

PIIX4 SERR#

Set this option to Enabled to enable the SERR# signal for the Intel PIIX4 chip.
The settings are Enabled or Disabled.

USB Passive Release

Set this option to Enabled to enable passive release for USB. The settings are
Enabled or Disabled.

PIIX4 Passive Release

Set this option to Enabled to enable passive release for the Intel PIIX4e chip.
This option must be Enabled to provide PCI 2.1 compliance. The settings are
Enabled or Disabled.

PIIX4 DELA YED TRANSACTION

Set this option to Enabled to enable delayed transactions for the Intel PIIX4
chip. This option must be Enabled to provide PCI 2.1 compliance. The settings
are Enabled or Disabled.

T ypeF DMA Buffer Control1 and 2
These options specify the DMA channel where TypeF buffer control is
implemented. The settings are Disabled, Channel-0, Channel-1, Channel-2,
Channel-3, Channel-5, Channel-6, or Channel-7.

DMA-n T ype

These options specify the bus that the specified DMA channel can be used
on. The settings are Normal ISA, PC/PCI, or Distributed.

CPU Bus Frequency

This option provides selective CPU Bus Frequency; however, it is strongly
recommended that the default setting (Auto) be selected. Unpredictable
situations may arise if the Intel default CPU bus speed is not used. The
settings are Auto, 66.8MHz, 68.5MHz, 75MHz, 83.3MHz, 100MHz, 103MHz, or
112MHz.

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50

Power Management Setup

The AMIBIOS Setup options described in this section are selected by
choosing Power Management Setup from the AMIBIOS Setup main menu.

AMI BIOS EASY SETUP UTILITY Ver.1.16
(c)1998 American Megatrends, Inc. All Rights Reserved
Advanced

Advanced CMOS Setup [ Enter ] Setup Help
Advanced Chipset Setup [ Enter ]
Power Management Setup [ Enter ] Power management setup
Plug and Play Setup [ Enter ] for configuring power
Peripheral Setup [ Enter ] management features
Change Language Setting English

- Previous Item
¯ Next Item

Select Menu

®¬

ESC:Exit Enter:Select F5:Setup Defaults F6:Original Values F10:Save & Exit

Power Management Setup Default Settings Chart

Setting Optio n Optimal Default Fail-Safe Default

ACPI Aware O/S No No
P ower Manag e ment / AP M Enabled E nab led
Power B utton Function On /O ff On /O ff
Gr een PC M onitor Power Stat e Suspend Stand By
Video P ower Down M ode S us pend D is abled
Ha rd Disk Power Down Mode Suspe nd Disa bled
Ha rd DiskT ime O u t ( Min u t e) Disabled Disabled
Power Saving Type Sleep Sl eep
S tand b y / Sus pen d Timer Unit 4 min 4 min
Sta n dby Time Out Dis ab led Disabled
Susp e nd Time Out Disable d Disable d
Slow C loc k Ratio 50% - 62.5% 50% - 62.5%
Dis p lay Activity Ig nore Ign ore

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Chapter 4

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Setting Option Optimal Default Fail-Safe Default

Devic e 6 (Seria l port 1) Monitor Monitor
Devic e 7 (Seria l port 2) Monitor Monitor
Devic e 8 (Parallel port) Monitor Monitor
Devic e 5 (Floppy disk) Monitor Monitor
Device 0 (P rimary master IDE) Monitor Monitor
De vice 1 (Primary sla ve IDE) Monitor Monitor
De vice 2 ( Secondary master IDE) Monitor Monitor
De vice 3 ( Secondary slav e IDE) Monitor Monitor
LAN Wake-u p Disable d Disable d
PC 98 Power L E D D isabl ed Disabled
F an O FF at S us pend E nabled E nab led
RT C Wake -up Disable d Disable d

*Hour N/A N/A
*Minute N/A N/A

* Setting option not selectable.

ACPI A ware O/S

Set this option to Yes to enable Advanced Configuration and Power Interface
(ACPI) BIOS for an ACPI-aware operating system.

Power Management/APM

Set this option to Enabled to enable the chipset power management and APM
(Advanced Power Management) features. The settings are Enabled or Dis­abled.

Power Button Function

This option specifies how the power button mounted externally on the
computer chassis is used. See Soft Power Connector on page 31 for more
information. The settings are shown in the table below.

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Green PC Monitor Power State

This option specifies the power state that the green PC-compliant video
monitor enters when AMIBIOS places it in a power saving state after the

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52

specified period of display inactivity has expired. The settings are Off, Stand
By, or Suspend.

Video Power Down Mode

This option specifies the power state that the video subsystem enters when
AMIBIOS places it in a power saving state after the specified period of display
inactivity has expired. The settings are Stand By , Suspend, or Disabled.

Hard Disk Power Down Mode

This option specifies the power conserving state that the hard disk drive
enters after the specified period of hard drive inactivity has expired. The
settings are Disabled, Stand By, or Suspend.

Hard Disk Time Out (Minute)

This option specifies the length of a period of hard disk drive inactivity. When
this length of time expires, the computer enters power-conserving state
specified in the Hard Disk Power Down Mode option (see above). The settings
are Disabled, and from 1 to 15 minutes, in one minute intervals.

Power Saving T ype

There are several types of sleeping states within the general sleep state. This
option allows you to choose how “asleep” you want your system to be. In
deeper sleep modes, more energy is saved. However, upon waking up, the
system must “reorient” itself, and reestablish control over the system’s
sleeping components. The settings are POS, Sleep, Stop Clock, and Deep
Sleep. POS is the lightest sleep mode; Deep Sleep is the heaviest.

Standby/Suspend Timer Unit

This option specifies the unit of time used for the Standby and Suspend time
out periods. The settings are 4 msec, 4 sec, 32 sec, or 4 min.

Standby Time Out

This option defines the length of time that the system, while in Full On state,
must be inactive before it enters Standby mode. The settings are Disabled and
from 4 minutes to 508 minutes, in increments of 4 minutes.

Suspend Time Out

This option defines the length of time that the system, while in Standby mode,
must be inactive before it enters Suspend mode. The settings are Disabled and
from 4 minutes to 508 minutes, in increments of 4 minutes.

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BIOS

Chapter 4

BIOS Configuration

Slow Clock Ratio

This option specifies the speed at which the system clock runs in the Standby
Mode power saving state. The settings are expressed as a percentage of the
normal CPU clock speed. The settings are 0-12.5%, 12.5%-25%, 25%-37.5%,

37.5%-50%, 50%-62.5%, 62.5%-75%, or 75-87.5%.

Display Activity

When set to Monitor, this option enables event monitoring on the video
display. If set to Monitor and the computer is in a power saving state, display
activity will cause the system to enter the Full On state. AMIBIOS reloads the
Standby and Suspend time-out timers if display activity occurs. The settings
are Monitor or Ignore.

Device n (Device identity)

When set to Monitor, these options enable event monitoring on the specified
hardware interrupt request line. If set to Monitor and the computer is in a
power saving state, any activity on the IRQ line will cause the system to enter
the Full On state. AMIBIOS reloads the Standby and Suspend time-out timers
if activity occurs on the specified IRQ line. The settings for each of these
options are Monitor or Ignore.

LAN Wake-up

When this option is Enabled, the system will wake up when a signal is
received on the W ake-on LAN header. In order for this wake up function to
work, the system must have been brought up at least past the POST before it
was last shut down (i.e. if you turn the system off before the POST, the
registry will not be set, and the system will not be able to wake up using this
function). This function requires an A TX 2.01 compliant power supply with 5V
standby (STB5V) current of at least 800mA. The settings are Enabled or
Disabled.

PC98 Power LED

When this option is Enabled, your power LED will turn to yellow when your
system is in Suspend mode. Note that if you do not have a two-color LED,
your LED will turn off when the system is in Suspend mode if this option is set
to Enabled. The settings are Enabled or Disabled.

F AN OFF at Suspend

If this option is Enabled, the CPU fan will turn off when the system is in
Suspend mode. If Disabled, the CPU fan will remain on while the system is in
Suspend mode. The settings are Enabled or Disabled.

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54

RTC W ake-up

If Enabled, this option allows you to set an hour and minute for the system to
wake up. The next two fields allow you to choose the wake up time. Note that
the time fields will not be available if this option is set to Disabled. In order for
this wake up function to work, the system must have been brought up at least
past the POST before it was last shut down (i.e. if you turn the system off
before the POST , the registry will not be set, and the system will not be able to
wake up using this function). The settings are Enabled or Disabled.

Plug and Play Setup

Choose PCI/Plug and Play Setup from the AMIBIOS Setup screen to display
the PCI and Plug and Play Setup options, described below.

AMI BIOS EASY SETUP UTILITY Ver.1.16
(c)1998 American Megatrends, Inc. All Rights Reserved
Advanced

Advanced CMOS Setup [ Enter ] Setup Help
Advanced Chipset Setup [ Enter ]
Power Management Setup [ Enter ] Configure PCI / Plug
Plug and Play Setup [ Enter ] and Play features
Peripheral Setup [ Enter ]
Change Language Setting English

BIOS

- Previous Item
¯ Next Item

Select Menu

®¬

ESC:Exit Enter:Select F5:Setup Defaults F6:Original Values F10:Save & Exit

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Chapter 4

BIOS Configuration

Plug and Play Setup Default Settings Chart

Setting Option Optimal Default Fail-Safe Default

P l ug and P lay Aware O/S Y es Y es
P CI Late n c y T imer (PCI Clocks) 64 64
PCI V GA Palette Sno op Disabled Disabled
Alloca te IRQ to PCI VG A Yes Yes
PCI IDE B usMaster Dis abled Dis a bled
OffBoa rd PCI IDE Card Auto Auto

*OffB oard PCI IDE Prima ry IRQ Dis abled Dis a bled
*OffB oard PCI IDE Sec onda ry IRQ Dis abled Dis a bled

PCI S lot1 IRQ Priority Auto Auto
PCI S lot2 IRQ Priority Auto Auto
PCI S lot3 IRQ Priority Auto Auto
PCI S lot4 IRQ Priority Auto Auto
DM A Channel 0 P nP P nP
DM A Channel 1 P nP P nP
DM A Channel 3 P nP P nP
DM A Channel 5 P nP P nP
DM A Channel 6 P nP P nP
DM A Channel 7 P nP P nP
IRQ3 PCI/PnP PCI/PnP
IRQ4 PCI/PnP PCI/PnP
IRQ5 PCI/PnP PCI/PnP
IRQ7 PCI/PnP PCI/PnP
IRQ9 PCI/PnP PCI/PnP
IRQ10 PCI/PnP PCI/PnP
IRQ11 PCI/PnP PCI/PnP
IRQ12 PCI/PnP PCI/PnP
IRQ14 PCI/PnP PCI/PnP
IRQ15 PCI/PnP PCI/PnP

* Setting option is not selectable

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56

Plug and Play A ware O/S

Set this option to Yes to inform AMIBIOS that the operating system can
handle plug and Play (PnP) devices. The settings are No or Yes.

PCI Latency Timer (PCI Clocks)

This option specifies the latency timings (in PCI clocks) for PCI devices
installed in the PCI expansion slots. The settings are 32, 64, 96, 128, 160, 192,
224, or 248.

PCI VGA Palette Snoop

When this option is set to Enabled, multiple VGA devices operating on
different buses can handle data from the CPU on each set of palette registers
on every video device. Bit 5 of the command register in the PCI device
configuration space is the VGA Palette Snoop bit (0 is disabled). For example, if
there are two VGA devices in the computer (one PCI and one ISA) and this
field is set for:

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This option must be set to Enabled if any ISA adapter card installed in the
system requires VGA palette snooping.

BIOS

Allocate IRQ to PCI VGA

Set this option to Yes to allocate an IRQ to the VGA device on the PCI bus.
The settings are Yes or No.

PCI IDE BusMaster

Set this option to Enabled to specify that the IDE controller on the PCI bus has
bus mastering capability . The settings are Disabled or Enabled.

OffBoard PCI IDE Card

This option specifies whether or not an offboard PCI IDE controller adapter
card is used in the computer, and where it is installed. If an offboard PCI IDE
controller is used, the motherboard onboard IDE controller is automatically
disabled. The settings are Auto and Slot1 through Slot6. If Auto is selected,
AMIBIOS automatically determines the correct setting (including using the
onboard controller if no offboard controller card is detected). This option
forces IRQ 14 and 15 to a PCI slot on the PCI local bus. This is necessary to

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Chapter 4

BIOS Configuration

support non-compliant PCI IDE adapter cards.

OffBoard PCI IDE Primary IRQ

This option specifies the PCI interrupt used by the primary IDE channel on the
offboard PCI IDE controller . The settings are Disabled, Hardwired, INT A,
INTB, INTC, or INTD.

Offboard PCI IDE Secondary IRQ

This option specifies the PCI interrupt used by the secondary IDE channel on
the offboard PCI IDE controller . The settings are Disabled, Hardwired, INT A,
INTB, INTC, or INTD.

PCI Slot n IRQ Priority

These options specify the IRQ priority for PCI devices installed in the PCI
devices installed in the PCI expansion slots. The settings are Auto, IRQ 3, 4, 5,
7, 9, 10, and 11, in priority order .

DMA Channel n

These options allow you to specify the bus type used by each DMA channel.
The settings are PnP or ISA/EISA .

IRQn

These options specify the bus that the specified IRQ line is used on. These
options allow you to reserve IRQs for legacy ISA adapter cards. These
options determine if AMIBIOS should remove an IRQ from the pool of
available IRQs passed to devices that are configurable by the system BIOS.
The available IRQ pool is determined by reading the ESCD NVRAM. If more
IRQs must be removed from the pool, you can use these options to reserve the
IRQ by assigning an ISA/EISA setting to it. Onboard I/O is configured by
AMIBIOS. All IRQs used by onboard I/O are configured as PCI/PnP . IRQ12
only appears if the Mouse Support option in Advanced Setup is set to
Disabled. IRQ14 and 15 will not be available if the onboard PCI IDE is enabled.
If all IRQs are set to ISA/EISA and IRQ14 and 15 are allocated to the onboard
PCI IDE, IRQ9 will still be available for PCI and PnP devices, because at least
one IRQ must be available for PCI and PnP devices. The settings are ISA/EISA
or PCI/PnP .

Reserved Memory Size

This option specifies the size of the memory area reserved for legacy ISA
adapter cards. The settings are Disabled, 16K, 32K, or 64K.

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58

Reserved Memory Address

This option specifies the beginning address (in hex) of the reserved memory
area. The specified ROM memory area is reserved for use by legacy ISA
adapter cards. This option does not appear if the Reserved Memory Size
option is set to Disabled. The settings are C0000, C4000, C8000, CC000, D0000,
D4000, D8000, or DC000.

PCI Device Search Order

This option changes the BIOS scan order of the PCI slot - from first to last or
last to first. The settings are First-Last or Last-First.

BIOS Devnode for Shadow RAM

This option is used for some add-on card ROMs which do not claim the correct
memory range that they occupy. The settings are Disabled or Enabled.

BIOS

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Peripheral Setup

Peripheral Setup options are displayed by choosing Peripheral Setup from the
AMIBIOS Setup main menu. All Peripheral Setup options are described here.

AMI BIOS EASY SETUP UTILITY Ver.1.16
(c)1998 American Megatrends, Inc. All Rights Reserved
Advanced

Advanced CMOS Setup [ Enter ] Setup Help
Advanced Chipset Setup [ Enter ]
Power Management Setup [ Enter ] Configure PCI / Plug
Plug and Play Setup [ Enter ] and Play features
Peripheral Setup [ Enter ]
Change Language Setting English

- Previous Item
¯ Next Item

Select Menu

®¬

ESC:Exit Enter:Select F5:Setup Defaults F6:Original Values F10:Save & Exit

Peripheral Setup Default Settings Chart

Setting Option Optimal Default Fail-Safe Default

Power Int e rru ption Disa ble d Disable d
Overclock Warning M es s age E nabled E nabled
LM79 IN0 4.08 4.08
LM79 IN1 4.08 4.08
LM79 IN2 4.08 4.08
LM79 IN3 6.85 6.85
LM79 IN4 15. 50 15.50
LM79 IN5 -14. 28 -14.28
LM79 IN6 -6.20 -6.20
Onb oard FDC Auto Auto
Onboard Serial Port 1 3F8h 3F8h
Onboard Serial Port 2 2F8h 2F8h
Serial Port 2 Mode Norm al Normal

*IR Duplex Mode

N/A N/A

60

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Default Settings Chart (Continued)

Setting Option Optimal Default Fail-Safe Default

*IR R eceiver P in IR R X1 IR R X1

Onboard P arallel P ort 378 378
Parallel Port Mode Normal Normal

*E P P Vers ion N/A N/A

Parallel P ort IR Q 7 7

*P ar allel P or t DM A Channel N /A N/A

Onb oard I DE B oth B oth

* Setting Option is not Selectable

Overclock W arning Message

When enabled, this option sends a warning message if the CPU is
overclocked. The settings are Enabled or Disabled.

LM79 IN(X)

This option specifies various CPU core voltage settings.

Power Interruption

The settings are Enabled or Disabled.

Onboard FDC

Set this option to Enabled to enable the floppy drive controller on the mother­board. The settings are Auto, Enabled, or Disabled.

BIOS

Onboard Serial Port1

This option specifies the base I/O port address of serial port 1. The settings
are Auto, Disabled, 3F8h, 2F8h, 3E8h, or 2E8h.

Onboard Serial Port2

This option specifies the base I/O port address of serial port 2. The settings
are Auto, Disabled, 3F8h, 2F8h, 3E8h, or 2E8h.

Serial Port2 Mode

This option specifies the operating mode for serial port 2. This option will not
appear if the Onboard Serial Port2 option is set to Disabled, or is set to Auto
and your system does not have an onboard serial port 2. The settings are
Normal, Sharp-IR, IrDA, and Consumer.

S1846 Tsunami A TX

61

Chapter 4

BIOS Configuration

IR T ransmission Mode

This option specifies the infrared transmission method. This option will not
appear if the Serial Port2 Mode option is set to Normal. The settings are Full or
Half.

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IR Receiver Pin

This option specifies which pin will act as the receiver for IR data transmis­sion. This option will not appear if the Serial Port2 Mode option is set to
Normal. The only setting is IRRX1.

OnBoard Parallel Port

This option specifies the base I/O port address of the parallel port on the
motherboard. The settings are Auto, Disabled, 378, or 278.

Parallel Port Mode

This option specifies the parallel port mode. The settings are:

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EPP V ersion

This option specifies the Enhanced Parallel Port specification version number
that is used in the system. This option only appears if the Parallel Port Mode
option is set to EPP . The settings are 1.7 or 1.9. Version 1.9 is common on

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62

troPseitilibapaCdednetxEehtoterehdatahtsecivedhtiwdesuebnactroplellarapehT

newer devices; consult your device’s user information for the appropriate port
type. There are no default settings.

Parallel Port IRQ

This option specifies the IRQ used by the parallel port, and only appears if
OnBoard Parallel Port is set to 278 or 378. The settings are 5 or 7.

Parallel Port DMA Channel

This option is only available if the setting for the Parallel Port Mode option is
set to ECP and the OnBoard Parallel Port option is set to 378, 278, or 3BC. This
option sets the DMA channel used by the parallel port. The settings are 0
through 7 in increments of one.

Onboard IDE

This option specifies the IDE channel used by the onboard IDE controller. The
settings are Disabled, Primary, Secondary, or Both.

BIOS

S1846 Tsunami A TX

63

Chapter 4

BIOS Configuration

Supervisor and User Security

You can limit access to the Setup Program or to the system using the Supervi­sor and User password options (the Supervisor password gives you access to
the Setup Program and the system; the User password, only to the system).
Note that you must create a supervisor password before you create a user
password.

AMI BIOS EASY SETUP UTILITY Ver.1.16
(c)1998 American Megatrends, Inc. All Rights Reserved
Main Advanced Security Exit

Set Supervisor Password [ Enter ] Setup Help
Set User Password [ Enter ]

Change the supervisor
password

- Previous Item
¯ Next Item

Select Menu

®¬

ESC:Exit Enter:Select F5:Setup Defaults F6:Original Values F10:Save & Exit

When you select the Supervisor Security option, a dialog box will appear,
allowing you to enter a password. You may either type the password in, or
click on the onscreen buttons. Your password must be between one and six
characters long.

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64

Once you have entered your new password, you will be asked to confirm it. If
the two passwords do not match, you will be prompted to enter a new pass­word, and then to confirm it. This will continue until you enter the same series
of characters both times. Once this is accomplished, a dialog box will appear
and notify you that the Supervisor Password has been installed. You may then
select the User Security option and enter a password for the user.
You can enter a new User password at any time simply by selecting the User
Security option, and typing in a new password. T o enter a new Supervisor
password, select the Supervisor Security option. You will be asked to enter the
current password. After you do so, you will be prompted to enter the new
password.

In either the Supervisor or User Security options, pressing <Enter> once when
asked for a new password, and a second time when asked to confirm the new
password, will uninstall the existing password. Note that uninstalling the
Supervisor password uninstalls the User password as well.

Language Utility

Currently, the BIOS Setup program is available only in English.

Flash Writer Utility

The AMI Flash Writer Utility is now included in the AMIBIOS, and so it is
simpler to upgrade the BIOS of your mainboard. The system BIOS is stored on
a flash EEPROM ROM chip on the mainboard which can be erased and
reprogrammed by following the directions on the following page.

1. From the DOS prompt, rename the BIOS file that you have downloaded to
“amiboot.rom” and copy it on to a floppy disk.

2. Insert the floppy disk with the BIOS upgrade into the A: drive.

3. Turn the power off.

4. While holding the <Ctrl> and <Home> keys, turn the power on. The system
will begin to read from the A: drive, and write the BIOS information contained
on the floppy disk in that drive to the EEPROM ROM chip. When the BIOS
has been totally reprogrammed, the system will reboot with the new BIOS in
operation.

5. If the system does not reboot in three minutes, power down the system wait
a few seconds, and then turn the power back on again. You will be prompted to
press <F1> to run Setup. You may check your settings at this time, or simply
save and exit the program.

S1846 Tsunami A TX

65

BIOS

Chapter 5

System Resources

chapter 5

System Resources

Beep Codes

Fatal errors, which halt the boot process, are communicated through a series of
audible beeps. If AMIBIOS POST can initialize the system video display, it
displays the error message. Displayed error messages, in most cases, allow the
system to continue to boot. Displayed error messages are described on pages
75-76. See the top of the next page for the beep code chart.

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66

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T roubleshooting System Problems

If the computer beeps... then...

1, 2, or 3 times... reseat the memory SIMMs or DIPs.

If the system still beeps, replace the
memory.

6 times... reseat the keyboard controller chip. If

it still beeps, replace the keyboard
controller. If it still beeps, try a
different keyboard, or replace the
keyboard fuse, if there is one.

8 times... there is a memory error on the video

adapter. Replace the video adapter, or
the RAM on the video adapter.

9 times... the BIOS ROM chip is bad. The

system probably needs a new BIOS
ROM chip.

11 times... reseat the cache memory on the

motherboard. If it still beeps, replace
the cache memory .

4, 5, 7, or 10 times... for 5 or 7 beeps, first test with a new CPU - if that

does not solve the problem, then motherboard must
be replaced.

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SYSTEM

S1846 Tsunami A TX

67

Chapter 5

System Resources

Bootblock Recovery Codes

The bootblock recovery checkpoint codes are listed in order of execution.

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Uncompressed Initialization Codes

The following routine checkpoint codes are listed in order of execution. These
codes are uncompressed in F000h shadow RAM. The table begins on the next
page.

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68

SYSTEM

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69

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S1846 Tsunami A TX

Chapter 5

System Resources

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70

http://www.tyan.com

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SYSTEM

S1846 Tsunami A TX

71

Chapter 5

System Resources

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ehtgnizilaitinI.revositsetrossecorpoCehterofebnoitazilaitinideriuqeR

ehtretfanoitazilaitinideriuqerynagnimrofreP.dezilaitinirossecorpoC

dednetxeehtgnikcehC.etelpmocsitsetrossecorpoCehtretfanoitazilaitinI

DIdraobyekehtgniussI.txenyekkcoLmuNdna,DIdraobyek,draobyek

72

http://www.tyan.com

edoCtniopkcehCnoitpircseD

h2A.txensrorretfosynagniyalpsiD

h3A

h4A

h5A

h7A

h8A

h9A

hAA

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h1B.saeracificepsotedocynagniypoC

h00

.txen

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.txennoitarugifnocmetsys

toobh91TNIotlortnocgnissaP.enodsisaeracificepsotgniypocedoC

.txenredaol

The system BIOS passes control to different buses at the following check­points:

edoCtniopkcehCnoitpircseD

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h93.ynafi,segassemrorrenoitazilaitinisubgniyalpsiD
h59.h0008Dhguorhth0008CmorfsMORrotpadasubgnizilaitinI

S1846 Tsunami A TX

73

SYSTEM

Chapter 5

System Resources

Additional Bus Checkpoints

While control is in the bus routines, additional checkpoints are ouput to I/O
port address 0080h as word to identify the routines being executed. These are
word checkpoints. The low byte of checkpoint is the system BIOS checkpoint
where control is passed to the different bus routines. The high byte of
checkpoint indicates that the routine is being executed in different buses.

The high byte of these checkpoints includes the following information:

stiBnoitpircseD

4-7stiB

0000.subehtnosecivedllaelbasiD.0noitcnuF

1000.subehtnosecivedcitatsezilaitinI.1noitcnuF

0100.subehtnosecivedtuptuoezilaitinI.2noitcnuF

1100.subehtnosecivedtupniezilaitinI.3noitcnuF

0010.subehtnosecivedLPIezilaitinI.4noitcnuF

1010.subehtnosecivedlarenegetaitinI.5noitcnuF

0110.subehtnognitroperrorreezilaitinI.6noitcnuF

1110.sesubllarofsMORno-ddaezilaitinI.7noitcnuF
0-3stiBsubehtyficepS

0.reganaMnoitazilaitinIeciveDMIDcireneG

1.secivedmetsySdraobnO

2.secivedASI

3.secivedASIE

4.secivedPnPASI

5.secivedICP

74

http://www.tyan.com

Displayed Error Messages

If an error occurs after the system display has been initialized, the error
message will be displayed as follows:

ERROR Message Line 1
ERROR Message Line 2
Press <F1> to continue

and the system will halt. The system will not halt if the W ait for <F1> If Any
Error option in Advanced Setup is Disabled.

RUN SETUP UTILITY

may also appear. Press <F1> to run WINBIOS Setup if this message appears.

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.puteSSOIBNIWnuR.deyortsedneebevahMARSOMCniderotsseulavehT

SOIBNIWnuR.detcetedepytehthctamtonseodMARSOMCniepytoedivehT

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drahehtkcehC.ytilitUksiDdraHgaiDIMAehtnuR.:DevirdmorfesnopseroN

SYSTEM

S1846 Tsunami A TX

75

Chapter 5

System Resources

egasseMrorrEnoitanalpxE

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reporP

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.norewopneht,ylreporphctiwsehttes,ffometsysehtnruT.emorhconom

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ebtsummetsysehT.degagnesimetsysehtnokcoldraobyekehT

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http://www.tyan.com

otgaiDIMAnuR.sserddanwonknunatayromemmetsysnirorreytiraP

76

S1846 Tsunami A TX

SYSTEM

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77

Appendix 1

CPU Retention Module Options

Appendix 1

CPU Retention Module Options

T yan offers two dif ferent options for securing Intel’s Pentium II CPUs onto the
motherboard. Each option provides retention for both older Pentium II’s as
well as newer Pentium II’s (including Celeron).

OPTION 1:

T wo different types of retention modules are included in the motherboard
package. For older versions of Pentium II, use the retention module shown in
Figure 1. For newer versions of Pentium II CPUs (including Celeron), use the
retention module shown in Figure 2. (Screws for the retention modules are
provided.)

Figure 1 Figure 2

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78

OPTION 2:

One universal retention module is included in the motheboard package. This
type of retention module adapts to both old and new Pentium II CPUs - see
Figure 3. (Screws for the retention modules are provided)

Figure 3

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79

Appendix 2

Glossary

Appendix 2

Glossary

ACPI (Advanced Configuration and Power Interface) is a power management

specification that allows the operating system to control the amount of power
distributed to the computer’s devices. Devices not in use can be turned off,
reducing unnecessary power expenditure.

AGP (Accelerated Graphics Port) is a PCI-based interface which was

designed specifically for demands of 3D graphics applications. The 32-bit
AGP channel directly links the graphics controller to the main memory.
While the channel runs at only 66MHz, it supports data transmission during
both the rising and falling ends of the clock cycle, yielding an effective speed

of 133MHz.

AT was the original form factor of IBM’s PC.
A T API (AT Attachment Packet Interface), also known as IDE or ATA, is a

drive implementation that includes the disk controller on the device itself. It
allows CD-ROMs and tape drives to be configured as master or slave devices,
just like hard drives.

ATX form factor was designed to replace the A T form factor . It improves on

the AT design by rotating the board ninety degrees, so that the IDE connec­tors are closer to the drive bays, and the CPU is closer to the power supply

http://www.tyan.com

80

and cooling fan. The keyboard, mouse, serial, USB, and parallel ports are built
in.

Bandwidth refers to carrying capacity . The greater the bandwidth, the more

data the bus, phone line, or other electrical path, can carry. Greater bandwidth,
then, also results in greater speed.

A BBS (Bulletin Board System) is a computer system with a number of
modems hooked up to it which acts as a center for users to post messages and
access information.

The BIOS (Basic Input/Output System) program resides in the ROM chip,
and provides the basic instructions for controlling your computer’s hardware.
Both the operating system and application software use BIOS routines to
ensure compatibility.

A buffer is a portion of RAM which is used to temporarily store data, usually
from an application, though it is also used when printing, and in most key­board drivers. The CPU can manipulate data in a buffer before copying it, all at
once, to a disk drive. While this improves system performance--reading to or
writing from a disk drive a single time is much faster than doing so repeatedly-­there is the possibility of losing your data should the system crash. Informa­tion stored in a buffer is temporarily stored, not permanently saved.

A bus is a data pathway. The term is used especially to refer to the connec­tion between the processor and system memory, and between the processor
and PCI or ISA local buses.

Bus mastering allows peripheral devices and IDEs to access the system

memory without going through the CPU (similar to DMA channels).
A cache is a temporary storage area for data that will be needed often by an

application. Using a cache lowers data access times, since the needed
information is stored in the SRAM instead of in the slower DRAM. Note that
the cache is also much smaller than your regular memory: a typical cache size
is 512KB, while you may have as much as 1GB of regular memory .

Cache size refers to the physical size of the cache onboard. This should not

be confused with the cacheable area, which is the total amount of memory

S1846 Tsunami A TX

81

GLOSSARY

Appendix 2

Glossary

which can be scanned by the system in search of data to put into the cache. A
typical setup would be a cache size of 512KB, and a cacheable area of 512MB.
In this case, up to 512MB of the main memory onboard is capable of being
cached. However, only 512KB of this memory will be in the cache at any given
moment. Any main memory above 512MB could never be cached.

Closed and open jumpers Jumpers and jumper pins are active when they

are On or Closed, and inactive when they are Off or Open.

CMOS Complementary Metal-Oxide Semiconductors are chips that hold the

basic start-up information for the BIOS.
The COM port is another name for the serial port, which is so-called

because it transmits the eight bits of a byte of data along one wire, and
receives data on another single wire (that is, the data is transmitted in serial
form, one bit after another). Parallel ports transmit the bits of a byte on eight
different wires at the same time (that is, in parallel form, eight bits at the same

time).

DIMM Dual In-line Memory Modules are a faster and more capacious form

of RAM than SIMMs, and do not need to be installed in pairs.

DIMM bank DIMM banks are sometimes called DIMM sockets, because

the physical slot and the logical unit are the same. That is, one DIMM
module fits into one DIMM socket, which is capable of acting as a memory
bank.

DMA Direct Memory Access channels are similar to IRQs. DMA channels

allow hardware devices (like sound cards or keyboards) to access the main
memory without involving the CPU. This frees up CPU resources for other
tasks. As with IRQs, it is vital that you do not double up devices on a single
line. Plug and Play devices will take care of this for you.

In Doze mode, only the CPU’s speed is slowed.

DRAM Dynamic RAM is a widely available, very affordable form of RAM

which has the unfortunate tendency to lose data if it is not recharged regu­larly (every few milliseconds). This refresh requirement makes DRAM three to
ten times slower than non-recharged RAM such as SRAM.

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82

EDO RAM (Extended Data-Out RAM) speeds access to memory locations

by assuming that memory addresses are static: the next time it looks for a bit of
data, it will be at the same spot, or one nearby .

EEPROM Electrically Erasable Programmable ROM, also called Flash BIOS,

is a ROM chip which can, unlike normal ROM, be updated. This allows you to
keep up with changes in the BIOS programs without having to buy a new chip.
TY AN’ s BIOS updates can be found at http://www .tyan.com/html/drivers.html

ESCD (Extended System Configuration Data) is a format for storing informa-

tion about Plug and Play devices in the system BIOS. This information helps
properly configure the system each time it boots.

Firmware is low level software that controls the system hardware.
Form factor is an industry term for the size, shape, power supply type,

and external connector type of the PCB (personal computer board) or
motherboard. The standard form factors are the AT and ATX, although
TYAN also makes some Baby-AT boards.

A Global timer is an onboard hardware timer, such as the Real Time
Clock.

Handshaking is a form of encryption. One system, typically the server,

sends an encryption scheme to another agent, typically a client. Thus, the
client’s data is protected during transmittal to the server.

HDD stands for Hard Disk Drive.
H-SYNC controls the horizontal properties of the monitor.
IC (Integrated Circuit) is the formal name for the computer chip.
IDE Integrated Device (or Drive) Electronics is a simple, self-contained

hard drive interface. It can handle drives up to 8.4GB in size. Almost all
IDEs sold now are in fact Enhanced IDEs (EIDEs).

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83

GLOSSARY

Appendix 2

Glossary

IDE INT (IDE Interrupt) is a hardware interrupt signal that goes to the IDE.
I/O Input/Output is the connection between your computer and another piece

of hardware (mouse, keyboard, etc.).

IRQ An Interrupt Request is an electronic request that runs from a hardware

device to the CPU. The interrupt controller assigns priorities to incoming
requests and delivers them to the CPU. It is important that there is only one
device hooked up to each IRQ line; doubling up devices on IRQ lines can lock
up your system. Happily, Plug and Play operating systems take care of these
details for you.

ISA stands for Industry Standard Architecture. ISA is a slower 8- or 16-bit

BUS (data pathway).

Latency is the amount of time that one part of a system spends waiting for

another part to catch up. This is most common when the system sends data
out to a peripheral device, and is waiting for the peripheral to send some data

back (peripherals tend to be slower than onboard system components).

NVRAM ROM and EEPROM are both examples of Non-Volatile RAM,

memory that holds its data without power. DRAM, in contrast, is volatile.

OEMs (Original Equipment Manufacturers) like Compaq or IBM package

other companies’ motherboards and hardware inside their case and sell them.
The parallel port transmits the bits of a byte on eight different wires at the

same time (that is, in parallel form, eight bits at the same time).

PCI stands for Peripheral Component Interconnect. PCI is a 32-bit local bus

(data pathway) which is faster than the ISA bus. Local buses are those which
operate within a single system (as opposed to a network bus, which connects
multiple systems).

The PCI PIO (PCI Programmable Input/Output) modes are the data
transfer modes used by IDE drives. These modes use the CPU for data
transfer (DMA channels do not). PCI refers to the type of bus used by these
modes to communicate with the CPU.

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84

PCI-to-PCI bridge allows you to connect multiple PCI devices onto one

PCI slot.

Pipeline burst SRAM is a fast secondary cache. It is used as a secondary

cache because SRAM is slower than SDRAM, but usually larger . Data is
cached first to the faster primary cache, and then, when the primary cache is
full, to the slower secondary cache.

Pipelining improves system performance by allowing the CPU to begin

executing a second instruction before the first is completed. A pipeline can be
likened to an assembly line, with a given part of the pipeline repeatedly
executing a set part of an operation on a series of instructions.

PM timers (Power Management timers) are software timers that count

down the number of seconds or minutes until the system times out and enters
sleep, suspend, or doze mode.

PnP is an acronym for Plug and Play, a design standard that has become

ascendant in the industry. Plug and Play devices require little set-up to use.
Novice end users can simply plug them into a computer that is running on a
Plug and Play-aware operating system (such as Windows 95), and go to
work. Devices and operating systems that are not Plug and Play require you
to reconfigure your system each time you add or change any part of your
hardware.

The term RAM (Random Access Memory), while technically referring to a
type of memory where any byte can be accessed without touching the
adjacent data, is often used to refer to the system’s main memory. This
memory is available to any program running on the computer.

ROM (Read-Only Memory) is a storage chip which contains the BIOS

(Basic Input/Output System), the basic instructions required to boot the
computer and start up the operating system.

SDRAM (Synchronous Dynamic RAM) is so-called because it can keep

two sets of memory addresses open simultaneously. By transferring data
alternately from one set of addresses, and then the other, SDRAM cuts down
on the delays associated with non-synchronous RAM, which must close one
address bank before opening the next.

S1846 Tsunami A TX

85

GLOSSARY

Appendix 2

Glossary

The serial port is so called because it transmits the eight bits of a byte of
data along one wire, and receives data on another single wire (that is, the
data is transmitted in serial form, one bit after another).

SIMM Single In-line Memory Modules are the most common form of

RAM. They must be installed in pairs, and do not have the carrying capacity
or the speed of DIMMs.

SIMM bank/socket SIMM sockets are the physical slots into which you

stick SIMM modules. A pair of SIMM sockets form a SIMM bank, and act as a
unit. If only one socket is filled, the bank will not operate.

In Sleep/Suspend mode, all devices except the CPU shut down.

SRAM Static RAM, unlike DRAM, does not need to be refreshed in order

to prevent data loss. Thus, it is faster, and more expensive.
In Standby mode, the video and fixed disk drive shut down; all other

devices operate normally.

UltraDMA/33 is a fast version of the old DMA channel. UltraDMA is

also called UltraATA. Without UltraDMA your system cannot take advantage
of the higher data transmission rates of the new UltraATA hard drives.

Universal Serial Bus or USB, is a versatile port. This one port type can

function as a serial, parallel, mouse, keyboard, or joystick port. It is fast
enough to support video transfer, and is capable of supporting up to 127
daisy-chained peripheral devices.

VGA (Video Graphics Array) is the PC video display standard.
V-SYNC controls the vertical properties of the monitor.
ZIF socket Zero Insertion Force sockets make it possible to insert CPUs

without damaging the sensitive pins. The CPU is lightly placed in an open
ZIF socket, and the metal lever pulled down. This shifts the processor over
and down, guiding it into place on the board.

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86

Notice for the USA

Compliance Information Statement (Declaration of Conformity Procedure) DoC
FCC Part 15: This Device complies with Part 15 of the FCC Rules.
Operation is subject to the following 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. If this equipment does cause harmful interfer­ence to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try one or more of the
following measures:

· Reorient or relocate the receiving antenna.

· Increase the separation between the equipment and receiver.

· Plug the equipment into an outlet on a circuit different from

that of the receiver.

· Consult the dealer or an experienced radio/television

technician for help.

Notice for Canada

This apparatus complies with the Class B limits for radio interference as
specified in the Canadian Department of Communications Radio Interference
Regulations. (Cet appareil est conforme aux normes de Classe B d’ interfer­ence radio tel que spécifié par le Ministére Canadien des Communications
dans les réglements d’interférence radio.)

Notice for Europe (CE Mark)

This product is in conformity with the Council Directive 89/336/EEC, 92/31/EEC
(EMC).

CAUTION: Lithium Batteries included with this board. Danger of explosion if
battery is incorrectly replaced. Replace only with the same or equivalent type
recommended by manufacturer. Dispose of used batteries according to
manufacturer instructions.

Note: The joystick port maximum output rating is 9 amperes at 5 volts.

Document # D1307-150

S1846 Tsunami A TX

87

BIOS Configuration

Addendum 1

(Text Mode)

The AMIBIOS Setup screen is shown below.

AMIBIOS HIFLEX SETUP UTILITY - VERSION 1.18
(c)1998 American Megatrends, Inc. All Rights Reserved

Standard CMOS Setup

Advanced CMOS Setup
Advanced Chipset Setup
Power Management Setup

PCI / Plug and Play Setup

Peripheral Setup

Auto-Detect Hard Disks

Change User Password

Change Supervisor Password

Auto Configuration with Optimal Settings

Auto Configuration with Fail Safe Settings

Change Language Setting

Save Settings and Exit

Exit Without Saving

Standard CMOS setup for changing time, date, hard disk type, etc.

ESC:Exit ↑↓:Sel F2/F3:Color F10:Save & Exit

1

Addendum

BIOS Configuration (Text Mode)

You can select a Setup option by using the following keyboard keys:

Key Function

Tab Moves fromone boxto the next

Arrowkeys Changes selections within a box

Enter Opens highlightedselection

The pages which follow contain the settings for the AMIBIOS Setup menus.
Drawings have been included for ease of reference. Overall, the AMIBIOS
Setup program is easy to use, and fairly intuitive. Note that the graphics in the
manual are simpler than those that appear on your screen.

1. S tandard CMOS Setup

Select the AMIBIOS Setup options below by choosing Main Setup from the
AMIBIOS Setup main menu. The Standard Setup menu screen is shown below.

AMIBIOS SETUP - STANDARD CMOS SETUP
(c)1998 American Megatrends, Inc. All Rights Reserved

Date (mm/dd/yyyy): Thurs Jan 1, 1998 Base Memory: 640 KB
Time (hh/mm/ss): 12:00:00 Extd Memory: 127 MB

Floppy Drive A: 1.44 MB 3½
Floppy Drive B: Not Installed

Type Size Cyln Head WPcom Sec Mode Mod Mode Mode
Pri Master : Auto On
Pri Slave : Auto On
Sec Master : Auto On
Sec Slave : Auto On

Boot Sector Virus Protection Disabled
Month: Jan - Dec ESC:Exit ↑↓:Sel

Day: 01 - 31 PgUp/PgDn:Modify
Year: 1901 - 2099 F2/F3:Color

2

LBA Blk PIO 32Bit

http://www.tyan.com

System Date/Time

You can type the date and time in directly, or select the portion of the date or
time that you want to modify using the ↑ ↓ cursor keys. Use the PgUp/PgDn
keys to Modify the settings. The clock runs on a 24-hour cycle (i.e. 1:00 PM is
13:00).

Floppy Drive A: and B:

Move the cursor to these fields via the arrow keys and select the floppy type.
The settings are 360KB 5¼ inch, 1.2 MB 5¼ inch, 720KB 3½ inch, 1.44MB 3½
inch, or 2.88MB 3½ inch. If you are not sure what type of floppy drive you
have, consult the documentation that came with your drive.

Primary Master , Primary Slave, Secondary Master , Secondary Slave

Select these options to configure the various drives. A screen with a list of
drive parameters appears.

AMIBIOS SETUP - STANDARD CMOS SETUP
(c)1998 American Megatrends, Inc. All Rights Reserved

Date (mm/dd/yyyy): Thurs Jan 1, 1998 Base Memory: 640 KB
Time (hh/mm/ss): 12:00:00 Extd Memory: 127 MB

Floppy Drive A: 1.44 MB 3½
Floppy Drive B: Not Installed

Type Size Cyln Head WPcom Sec Mode Mod Mode Mode
Pri Master : Auto On
Pri Slave : Auto On
Sec Master : Auto On
Sec Slave : Auto On

Boot Sector Virus Protection Disabled

LBA Blk PIO 32Bit

1-46 : Predefined types ESC:Exit ↑↓:Sel
USER : Enter parameters manually PgUp/PgDn:Modify
AUTO : Set parameters automatically on each boot F2/F3:Color
CDROM : Use for ATAPI CDROM drives
ARMD : Use for LS120, MO, Iomega Zip Drives
Or press ENTER to autodetect

3

Addendum

BIOS Configuration (Text Mode)

Default Settings

Every option in AMIBIOS Setup contains two default values: a Fail-Safe
default and the Optimal default value. You can also choose to restore the
original BIOS settings (i.e. those that your board came with) at any time.
These options can be found in the ‘Exit’ menu.

Optimal Defaults

The Optimal default values provide optimum performance settings for all
devices and system features.

Fail-Safe Defaults

The Fail-Safe default settings consist of the safest set of parameters. Use them
if the system is behaving erratically . They should always work but do not
provide optimal system performance characteristics.

AMIBIOS HIFLEX SETUP UTILITY - VERSION 1.18
(c)1998 American Megatrends, Inc. All Rights Reserved

Standard CMOS Setup

Advanced CMOS Setup
Advanced Chipset Setup
Power Management Setup

PCI / Plug and Play Setup

Peripheral Setup

Auto-Detect Hard Disks

Change User Password

Change Supervisor Password

Auto Configuration with Optimal Settings

Auto Configuration with Fail Safe Settings

Change Language Setting

Save Settings and Exit

Exit Without Saving

Standard CMOS setup for changing time, date, hard disk type, etc.

ESC:Exit ↑↓:Sel F2/F3:Color F10:Save & Exit

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4

2. Advanced CMOS Setup

The Advanced Setup options included in the AMIBIOS Setup for the Thunder
X are described in this chapter. Select Advanced Setup from the AMIBIOS
Setup main menu to display the Advanced Setup options.

AMIBIOS SETUP - ADVANCED CMOS SETUP
(c)1998 American Megatrends, Inc. All Rights Reserved

Quick Boot Disabled Available Options:
Primary Master ARMD Emulated as Auto Disabled
Primary Slave ARMD Emulated as Auto Enabled
Secondary Master ARMD Emulated as Auto
Secondary Slave ARMD Emulated as Auto
1st Boot Device Floppy
2nd Boot Device 1st IDE-HDD
3rd Boot Device ATAPI CDROM
Try Other Boot Devices Yes
Floppy Access Control Read-Write
Hard Disk Access Control Read-Write
S.M.A.R.T. for Hard Disks Disabled
Boot Up Num-Lock On
PS/2 Mouse Support Enabled
Primary Display VGA/EGA
Password Check Setup
Boot To OS/2 N o
Internal Cache WriteBack ESC:Exit ↑↓:Sel
System BIOS Cacheable Enabled PgUp/PgDn:Modify
Cache Bus ECC Enabled F2/F3:Color

Advanced CMOS Setup Default Settings Chart

Setting Opti on OptimalD efaul t Fai l -Safe Default

Quick Boot Disabled Disabled
PrimaryM as t er ARM D E mulated as Auto A ut o
PrimaryS lave ARM D Emulated as Auto A uto
Secon daryM aster A RM D Emulated as Auto A uto
Secon daryS lave ARM D Emulated as Auto A uto
1st B oo tDev ice F lo ppy F loppy
2nd Boot Device 1st IDE-HDD 1st IDE-HDD
3rdB oot Device ATAPI CDROM ATAPI CDROM
TryOtherB o o t Devices Yes Yes
Flo p py Access C ont rol R ead-Write Rea d-Write
HardDisk A ccess Control Read-Write Read-Write

5

Addendum

BIOS Configuration (Text Mode)

Settings Chart (Continued)

Setting Opti on Optimal D efaul t Fai l -Safe Default

S.M.A.R.T.for H ard D isks Disabled Disabled
Bo o t Up Num-Lock On On
PS/2 M ous e Support E nabled E nab led
PrimaryDisplay VGA /EGA VGA /EGA
Passwo rd Check Setup Setup
Boot To OS/2 No No
InternalCache WriteBac k WriteBack
System BIOS Cac h eable Enabled Disabled
Cache Bus EC C Enabled E nab led
Def ault PrimaryV ideo AGP AG P
C000,16KShado w Cach ed Cached
C400,16KShado w Cach ed Cached
C800,16KShado w Disabled D isabled
CC00,16K S had ow D isabled D isabled
D000,16KShado w Disabled D isabled
D400,16KShado w Disabled D isabled
D800,16KShado w Disabled D isabled
DC00,16K S had ow D isabled D isabled

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6

3. Advanced Chipset Setup

Choose Chipset Setup on the AMIBIOS Setup main menu. All Chipset Setup
options are then displayed. AMIBIOS Setup can be customized. AMIBIOS
Setup can be customized via AMIBCP. See the AMIBIOS Utilities Guide for
additional information.

AMIBIOS SETUP - ADVANCED CHIPSET SETUP
(c)1998 American Megatrends, Inc. All Rights Reserved

USB Function Disabled Available Options:

USB KB/Mouse Legacy Support Disabled Disabled
Port 64/60 Emulation Disabled Enabled
SERR# Disabled
PERR# Disabled
WSC# Handshake Enabled
USWC Write Post Enabled
Master Latency Timer (Clks) 64
Multi-Trans Timer (Clks) 32
PCI1 to PCI0 Access Disabled
Method of Memory Detection Auto & SPD
DRAM Integrity Mode N/ A
DRAM Refresh Rate 15.6us
Memory Hole Disabled
SDRAM RAS# to CAS# Delay 3SCLKs
SDRAM RAS# Precharge 3SCLKs
Power Down SDRAM Disabled
ACPI Control Register Disabled ESC:Exit
Gated Clock Disabled PgUp/PgDn:Modify
Graphics Aperture Size 64 MB F2/F3:Color

↑↓:Sel

Advanced Chipset Setup Default Settings Chart

Setting O pti on O pti mal Default Fa i l-Sa fe Defaul t

USB Func tio n Disabled Disabled

*USB KB/M ous e Legac y Support Disabled Disabled
*Port 64/60 Emulation Disabled Disabled

SER R# D isabled Disabled
P E RR# Disabled Disabled
WSC # H a nds hak e E nabled Enabled
USWC W riteP ost Enabled Enabled
M aster LatencyTimer (C lks) 64 64
M ulti-Trans T im er (Clks ) 32 32
PC I1to P CI0 Access D isabled Disabled
Method ofM emoryDetection Auto & SPD Auto & SPD
DRAM IntegrityMode *N/A *N/A

7

Addendum

BIOS Configuration (Text Mode)

Settings Chart (continued)

Setting Option Optim al Default Fail-Safe Default

DRAM RefreshRate 15.6 us 15.6 us
M emoryH o le Disabled Disabled
SDRAM RA S# to CAS# Delay 3SCLKs 3SCLKs
SDRAM RA S# Precharge 3SCLKs 3SCLKs
P o wer D o wn SD R A M D isabled Disabled
A C P I C o ntro l R egister D isabled Disabled
Gated C loc k Disabled Disabled
Graphics A perture Size 64 M B 64 M B
Search fo r M DA R es o urces Yes Yes
A GP M ulti-Trans Tim er (AG P Clks ) 32 D isabled
A GP Lo w-P riority T imer (Clks ) 16 Disabled
A GP SE RR Disabled D isabled
A GP P a rity Error R espo ns e Disabled D isabled
8bit I/O Re co v ery Tim e D isabled Disabled
16bit I/O R ec o very T im e D isabled Disabled
P IIX4 SER R # Disabled Disabled
USB P ass ive Release Enabled Enabled
P IIX4 P ass ive Release Enabled E nabled
P IIX4 Delayed Transac tion Disabled D isabled
Type FD M A B uffer C o ntro l1 D isabled Disabled
Type FD M A B uffer C o ntro l2 D isabled Disabled
DM A-0 Type NormalISA No rmalISA
DM A-1Type NormalISA Normal ISA
DM A-2 Type NormalISA No rmalISA
DM A-3 Type NormalISA No rmalISA
DM A-5 Type NormalISA No rmalISA
DM A-6 Type NormalISA No rmalISA
DM A-7 Type NormalISA No rmalISA
CP U B us Frequenc y A uto A uto

* Setting option not selectable.

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8

4. Power Management Setup

The AMIBIOS Setup options described in this section are selected by choos­ing Power Management Setup from the AMIBIOS Setup main menu.

AMIBIOS SETUP - POWER MANAGEMENT SETUP
(c)1998 American Megatrends, Inc. All Rights Reserved

ACPI Aware O/S N o Available Options:

Power Management / APM Enabled No
Power Button Function On/Off Yes
Green PC Monitor Power State Suspend
Video Power Down Mode Suspend
Hard Disk Power Down Mode Suspend
Hard Disk Time Out (Minute) Disabled
Power Saving Type Sleep
Standby / Suspend Timer Unit 4 min
Standby Time Out Disabled
Suspend Time Out Disabled
Slow Clock Ratio 50% - 62.5%
Display Activity Ignore
Device 6 (Serial port 1) Monitor
Device 7 (Serial port 2) Monitor
Device 8 (Parallel port) Monitor
Device 5 (Floppy Disk) Monitor
Device 0 (Primary master IDE) Monitor ESC:Exit
Device 1 (Primary slave IDE) Monitor PgUp/PgDn:Modify
Device 2 (Secondary master IDE) Monitor F2/F3:Color

↑↓:Sel

Power Management Setup Default Settings Chart

SettingOption Optimal D efa ult Fail-Safe Defau lt

ACPIAware O/S No No
P ower M anagem ent / APM E nabled E nabled
P ower ButtonFunc tio n On/O ff O n/O ff
Green PC M onitor P owerState Suspend Stand By
Video Power Do wnM ode S uspe nd Disabled
Hard D isk P ower D own M o de Suspend Disabled
Hard D isk Tim e Out (M inute) Disabled D isabled
Po wer Saving Type Sleep Sleep
Standby /Suspend T im er Unit 4 min 4 m in
Standby Tim e Out Disabled D isabled
Suspend T im e O ut D isabled D isabled
Slow C lo c k R atio 50%- 62.5% 50%- 62.5%
DisplayA ct ivity Igno re Ignore

9

Addendum

BIOS Configuration (Text Mode)

Setting Option Optimal Default Fail-Safe Default

Device6 (Serial port 1) M o nito r M onito r
Dev ice 7 (Serial po rt 2) M o nito r M o nito r
Device8 (Parallelpo rt) M onitor M onito r
Dev ice 5 (Flo ppy disk) M onito r M onitor
Dev ice 0 (P rimary mas ter IDE) Monito r M o nito r
Device1(Prim ary slave IDE) M onitor M onito r
Dev ice 2 (Secondary m as ter IDE) M o nitor M onito r
Dev ice 3 (Secondary slave IDE) M o nito r M onito r
LA N Wak e-up Disabled D isabled
P C 98 P o wer LED Disabled D isabled
Fan O F F at Sus pend Enabled Enabled
RT C Wak e-up D isabled Disabled

*Ho ur N/ A N /A
*M inute N /A N / A

* Setting option not selectable.

5. PCI / Plug and Play Setup

Choose PCI/Plug and Play Setup from the AMIBIOS Setup screen to display
the PCI and Plug and Play Setup options, described below.

AMIBIOS SETUP - POWER MANAGEMENT SETUP
(c)1998 American Megatrends, Inc. All Rights Reserved

Plug and Play Aware O/S Yes Available Options:
PCI Latency Timer (PCI Clocks) 64 No
PCI VGA Palette Snoop Disabled Yes
Allocate IRQ to PCI VGA Y es
PCI IDE BusMaster Disabled
OffBoard PCI IDE Card Auto
OffBoard PCI IDE Primary IRQ Disabled
OffBoard PCI IDE Secondary IRQ Disabled
PCI Slot1 IRQ Priority Auto
PCI Slot2 IRQ Priority Auto
PCI Slot3 IRQ Priority Auto
PCI Slot4 IRQ Priority Auto
DMA Channel 0 Pn P
DMA Channel 1 Pn P
DMA Channel 3 Pn P
DMA Channel 5 Pn P
DMA Channel 6 Pn P
DMA Channel 7 Pn P ESC:Exit
IRQ3 PCI/PnP PgUp/PgDn:Modify
IRQ4 PCI/PnP F2/F3:Color

↑↓:Sel

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10

Plug and Play Setup Default Settings Chart

Setting Option Optim al Default Fail-Safe Default

P lug an d P lay A ware O /S Yes Y es
P C I Latency Tim er (PC I C lo ck s) 64 64
P C I VGA P alette S no o p Disabled D isabled
AllocateIRQtoPCIVGA Yes Yes
P C I IDE B us Master D isabled Disabled
OffBoardPCIIDECard Auto Auto

*OffB o ard P CI ID E P rimary IRQ D isabled Disabled
*OffB o ard P CI ID E Seco ndary IR Q Disabled D isabled

PC I S lo t1IRQ P rio rity A uto A ut o
P C I Slo t2 IR Q P rio rity A uto A uto
P C I Slo t3 IR Q P rio rity A uto A uto
P C I Slo t4 IR Q P rio rity A uto A uto
DM A C hannel 0 PnP PnP
DM A C hannel 1 PnP PnP
DM A C hannel 3 PnP PnP
DM A C hannel 5 PnP PnP
DM A C hannel 6 PnP PnP
DM A C hannel 7 PnP PnP
IRQ3 PC I/P nP P C I/P nP
IRQ4 PC I/P nP P C I/P nP
IRQ5 PC I/P nP P C I/P nP
IRQ7 PC I/P nP P C I/P nP
IRQ9 PC I/P nP P C I/P nP
IRQ10 P C I/P nP P C I/P nP
IRQ11 P C I/P nP P C I/P nP
IRQ12 P C I/P nP P C I/P nP
IRQ14 P C I/P nP P C I/P nP
IRQ15 P C I/P nP P C I/P nP
Res erved M em o ry Size Disabled D isabled

*Reserved M em o ry A ddress C8000 C 8000

P C I D evice Search O rder F irst-Last F irst-Last
B IOS Dev no de fo r S hado w RA M Disabled D isabled

* Setting option is not selectable

11

Addendum

BIOS Configuration (Text Mode)

6. Peripheral Setup

Peripheral Setup options are displayed by choosing Peripheral Setup from the
AMIBIOS Setup main menu. All Peripheral Setup options are described here.

AMIBIOS SETUP - PERIPHERAL SETUP
(c)1998 American Megatrends, Inc. All Rights Reserved

Power Interruption Disabled Available Options:
Onboard FDC Auto Disabled
Onboard Serial Port1 3F8h Enabled
Onboard Serial Port2 2F8h
Serial Port2 Mode Normal
IR Duplex Mode N/ A
IR Recever Pin IRRx1
Onboard Parallel Port 378
Parallel Port Mode Normal
EPP Version N/ A
Parallel Port IRQ 7
Parallel Port DMA Channel N/A
Onboard IDE

ESC:Exit
PgUp/PgDn:Modify
F2/F3:Color

Peripheral Setup Default Settings Chart

Setting Opti on O ptimal Default Fai l-Sa fe Defaul t

Power I nterr upti on Disabled Disabled
Onboard FDC Auto Auto
Onboard SerialPort 1 3F8h 3F8h
Onboard SerialPort 2 2F8h 2F8h

SerialPort 2 M ode Normal No rmal

*IR Duplex M o de N/A N /A
*IR ReceiverP in IRRX1 IRRX1

Onboard ParallelPort 378 378

Parallel Port M ode No rmal No rmal

*EP P Versio n N /A N/A

Parallel Port IRQ 7 7

*ParallelP ort DM A Channel N/A N/A

Onboard IDE Both Both

12

↑↓:Sel

http://www.tyan.com

7. Supervisor and User Security

You can limit access to the Setup Program or to the system using the Supervi­sor and User password options (the Supervisor password gives you access to
the Setup Program and the system; the User password, only to the system).
Note that you must create a supervisor password before you create a user
password.

AMIBIOS HIFLEX SETUP UTILITY - VERSION 1.18
(c)1998 American Megatrends, Inc. All Rights Reserved

Standard CMOS Setup

Advanced CMOS Setup
Advanced Chipset Setup
Power Management Setup

PCI / Plug and Play Setup

Peripheral Setup

Auto-Detect Hard Disks

Change User Password

Change Supervisor Password

Auto Configuration with Optimal Settings

Auto Configuration with Fail Safe Settings

Change Language Setting

Save Settings and Exit

Exit Without Saving

Standard CMOS setup for changing time, date, hard disk type, etc.

ESC:Exit

↑↓:Sel F2/F3:Color F10:Save & Exit

When you select the Supervisor Security option, a dialog box (shown below)
will appear, allowing you to enter a password. You may either type the pass­word in, or click on the onscreen buttons. Your password must be between
one and six characters long.

To enter a new Supervisor password, select the Supervisor Security option.
You will be asked to enter the current password. After you do so, you will be
prompted to enter the new password.

13