TYAN S1846 Tsunami ATX User manual

Tyan S1846
Tsunami ATX
Motherboard User’s Manual
Revision 1.40
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.
PRINTEDINUSA.

TableofContents
1.Introduction................................................................................................. 4
Overview........................................................................................... 4
Icons................................................................................................. 5
HardwareSpecifications/Features................................................ 5
SoftwareSpecifications.................................................................. 7
Technical Support........................................................................... 7
ReturningMerchandise for Service............................................. 8
2.BoardInstallation..................................................................................... 10
Unpacking....................................................................................... 10
Installation...................................................................................... 10
SettingJumpers.............................................................................. 23
3.OnboardResourceSettings................................................................... 24
QuickReferenceforJumpers........................................................ 24
Mapof Motherboard Jumpers..................................................... 25
HardwareCMOS& PasswordReset........................................... 25
SoftPowerConnector.................................................................... 26
SpeakerConnectorInstallation.................................................... 26
HardwareReset SwitchConnector Installation......................... 27
ExternalSMI.................................................................................... 27
ChassisIntrusion AlarmConnector............................................ 28
EnsoniqAudio Connectors......................................................... 28
CMOSRTC...................................................................................... 29
FlashEEPROM.............................................................................. 29
RAMInstallation........................................................................... 30
CacheMemory............................................................................... 31
FrequentlyAsked Questions....................................................... 32
4.BIOSConfiguration................................................................................. 34
StandardSetup............................................................................... 36
AdvancedSetup............................................................................. 40
ChipsetSetup.................................................................................. 45
PowerManagementSetup............................................................ 52
PnP/PCISetup................................................................................. 56
PeripheralSetup............................................................................. 60
SupervisorandUser Security...................................................... 63
Anti-VirusSecurity......................................................................... 63
DetectIDEUtility........................................................................... 64
LanguageUtility............................................................................. 64
FlashWriterUtility......................................................................... 64

5.SystemResources.................................................................................... 66
POSTCheckpointCodes.............................................................. 67
BeepCodes..................................................................................... 74
TroubleshootingSystem Problems............................................. 75
DisplayedErrorMessages.......................................................... 76
Glossary.......................................................................................... 78

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Chapter 1
Introduction
Overview
TheS1846 (S1846S andS1846SLA) Tsunami ATX is a quality, highperfor-
mance 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 Tsunami ATX. With
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 TYAN Computer’s web site located at
http://www.tyan.com. There you can find information on all of TYAN’s
chapter 1
Introduction

S1846 TsunamiATX
5
INTRO
products along with FAQs, distributors list, drivers, and BIOS setting explana-
tions.
Icons
In order to help you navigate this manual and set up your system, we have
added several icons to our format.
This icon alerts you to particularly important details regarding the
setup or maintenance of your system. This icon often appears next
to information that may keep you from damaging your board or
system. While we will often point out the most vital paragraphs in a
chapter, you should always read every word in the text. Failing to do so can
lead to exasperation and expense.
Wherever possible, we have included step-by-step instructions for
setting up your system, which are indicated by this icon. However, it
is in your best interest to read an entire section (and perhaps the
entire manual) before you begin to fiddle with your motherboard.
While we have alerted you to potential dangers in several places in
the manual with this icon, these warnings should not be regarded as
the whole of your safety regimen. Never forget that computers are
electrical devices, and are capable of delivering a shock. Prevent damage to
yourself and to your board: always ensure that your system is turned off and
unplugged whenever you are working with it, and that you are equipped with a
static safety device.
HardwareSpecifications/Features
ProcessorInformation •One SEC slot (Slot One type)
•66MHz to 100MHz bus support
(BIOSselectable)
•PentiumII233-450MHz
•Supports Celeron CPUs
ChipsetInformation •Intel440BXAGPset
•IntelPIIX4e controller
!
important!
procedure
1.
2.
3.
warning

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Chapter 1
Introduction
•National 309 Super I/O chipset
VoltageandPower •ATX power supply connector
Information •+12Vpower source for DC fan onboard
•3.3VDRAM support
•Utilizes GTL+ bus to reduce power
consumption and EMI
MainMemory •Up to 768MB onboard
•Three 168-pin DIMM sockets
•Supports100MHz SDRAMwith SPD
SystemManagement •Optional National LM79 and LM75 ASICs
with onboard alarm for monitoring temperature,
supply voltages, and fan speed
•Intel LANDesk Client Manager software
(withLM79 installed)
•Chassis intrusion detection capable
ExpansionSlots •One32-bit AGP slot
•Five 32-bit PCI BUS Master slots
•Two 16-bit ISA slots
•One shared, seven usable slots
PhysicalDimensions •ATX design
•12inches x 8.25inches
•S1846Srequires Intel Venus
compatible I/O shield
•S1846SLArequires IntelCaveman compatible
I/O shield
BIOSInformation •AMI Plug and Play flash BIOS
•DeepGreen, Energy Star, ACPI, Year 2000,and
PC98compliant
•Soft power-down, multiple boot
options
•Win98/NT5ready, DMI2.0 compliant
•PCI2.1,APM 1.1compliant
DiskDrive& SystemI/O •Two PCIbus masteringEIDE

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INTRO
channels
•SupportsEIDECD-ROMs
•PIO Mode 3 & 4 (up to 17MB/sec DTR)
•UltraDMA/33 bus mastering mode (up to
33MB/secDTR)
•Support for two floppy drives (up to 2.88MB)
•Two serialports (16550UARTs)
•OneECP/EPPparallel port
•OneIR (InfraRed) I/Ointerface port
•Two USB rev 1.2 (universal serial bus)
connectors
•One PS/2 mouse connector
•One PS/2 keyboard connector
EnsoniqES1371AudioPCI •AC97Codec
(S1846SLAonly) •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
SoftwareSpecifications
OS •Operateswith MS-DOS,Windows 3.x,
Windows for WorkGroup 3.x,Windows 95,
Windows 98, Windows NT, OS/2, Novell
Netware,Solaris, andSCOUnix
TechnicalSupport
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
Helpresources:
1. See FAQ and beep codes sections of this manual.
2. See Tyan web site for FAQ, bulletins, driver updates, etc.
http://www.tyan.com
3. Contact your dealer or distributor for help BEFORE calling Tyan.
4. Check the Tyan user group: alt.comp.periphs.mainboard.tyan
5. Email Tyan tech support: [email protected]
6. Call Tyan tech support: 510-440-8808
ReturningMerchandiseforService
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.
ForResellersOnly:
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.

S1846 TsunamiATX
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INTRO
Thispageleftblankintentionally.

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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
(S1846Sonly)
(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’sthefirstthingIshoulddo?
The first thing you should do is read this user’s manual. It contains important

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procedure
1.
2.
3.
INSTALL
information which will make configuration and setup much easier.
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.
DONOTAPPLYPOWERTOTHEBOARDIFITHASBEENDAMAGED!
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.
Installthemotherboardintoyourcase.
Follow the instructions provided by the case manufacturer for proper installa-
tion 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.
Pluginthepowerconnectorasshown.
The following photos 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 above. Make
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
!
important!
warning

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Chapter 2
Board Installation
!
important!
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
computeris jostledor moved.Note:TyanrecommendsusinganATXpower
supplythatconformstoindustrystandardrevision2.01.
Next,connectyourIDEcables(ifyou’reusingIDEharddrives).
The colored stripe on the cable indicating pin 1 should face towards the rear of
the case (towards the ATX connectors).
In Figure 3 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 informa-
tion.
Some symptoms of incorrectly installed HDDs are:
•Hard disk drives are not auto-detected: may be a Master/Slave
Figure 2
Figure 1

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INSTALL
Figure 4
Pin 1
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
IDEdrive.
Figure3

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Chapter 2
Board Installation
NowthatyouhaveinstalledyourIDEdrives,yourfloppiesarenext.
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.
Figure5
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. Try another cable or floppy drive to verify.

S1846 TsunamiATX
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INSTALL
!
important!
•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.
NextaretheComandPrinterports.
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
may damage your system.
Figure 6 at the top of the next page shows the ATX double row connectors on
this board. The Com and Printer ports, as well as the other ports, are labeled.
Figure6
Note: Only TYAN 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.
ConnectingtheUSBandPS/2ports.
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.
Installingyouradd-in cardsisrelatively simplebut...
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
Figure 7 Figure 8

S1846 TsunamiATX
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INSTALL
!
important!
device.
•NEVER force a card into a slot. If it doesn’t fit, look at the socket on the
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. You
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,youneedtoinstallyourmemory.
Since TYAN boards are manufactured with performance in mind, you should
use add-in components that match. Some DIMM modules may seem to be high
quality because of name or feel but that does not guarantee real-world
usability. Some cheaper or OEM memory may have brand-name components,
but they may contain inferior or substandard parts which do not meet the
critical tolerances our products require. Because of this, your memory may not
work correctly in a TYAN board though it may work well in a competitor’s
board. This is because many of our competitors do not adhere to the strict
tolerances required for high performance. If you buy a TYAN board, you are
getting the best system available. To make installation easy and trouble free,
get high quality parts. Some brands we recommend are Advantage Memory,
Corsair Microsystems, Millenium, Kingston Memory, QesTec Incorporated,
Unigen, Micron Technology, and Crucial Technology. These DIMMs have
proven to be very stable on our boards and perform extremely well.

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Chapter 2
Board Installation
!
important!
Figure9
To install your DIMMs, line your module up so that the pins fit into the slot.
There is only one way that your DIMM can fit properly. Make sure that the
short row of pins is lined up with the short gap in the DIMM slot. Figure 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.
To lock the DIMM into place, push the plastic clips on either end of the slot
onto the notches in the ends of the DIMM (see Figure 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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INSTALL
Figure 10
Finally,installyourCPU.
PentiumII processors (233through 450MHz) canbe used on the Tsunami.Please
refer to pages 29-30 for the correct CPU jumper settings for your board. Remem-
ber:
• The CPU is a sensitive electronic component and it can easily be damaged
by static electricity. Do not touch the CPU pins with your fingers.
• Before the CPU is installed, the mainboard must be placed on a flat
surface. You should be able to insert the CPU with minimal, but firm,
pressure. Do not press down hard on the CPU.
Currently, 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 perfor-
mance, and both types can be installed in the Pentium II slot on the Tsunami
board.
!
important!

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Chapter 2
Board Installation
Pentium II Slot Connector
and Key Pin
Figure 13
Figure 11 Figure 12
InstallingCPURetentionModules
Installation of a Pentium II processor requires a CPU retention module, which
is first secured onto the motherboard.
To attach the retention module,
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 on the following page)
down over the Pentium II slot so
that the retention module sits flat
against the motherboard.
Tighten the screws in a clockwise manner to secure the module to the board.
Warning: Do not overtighten the screws as you may
damage the module and/or the motherboard.
Installingthe Active Processor
When the retention module is securely installed, you
are ready to plug in the CPU. Press down firmly on the
CPUuntil youheara “click”(seeFigure 15).This click-
ing sound indicates that the CPU is fully locked into
Figure 14