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, Pentium III, 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.
The S1846 (S1846S and S1846SLA) Tsunami ATX is a quality, high performance motherboard designed for Intel Pentium II & P-III microprocessors. This
motherboard utilizes the Intel 440BX AGPset and can support CPU speeds of
233MHz through 500MHz, 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 Computers web site located at
http://www.tyan.com. There you can find information on all of TYANs
http://www.tyan.com
4
Page 5
products along with FAQs, 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 InformationOne SEC slot (Slot 1 type)
66MHz to 100MHz bus support
(BIOS selectable)
Pentium II or Pentium III, 233-500MHz
Supports Celeron CPUs
Chipset InformationIntel 440BX AGPset
Intel PIIX4e controller
S1846 Tsunami ATX
5
Page 6
Chapter 1
Introduction
National 309 Super I/O chipset
Voltage and PowerATX 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 MemoryUp to 768MB onboard
Three 168-pin DIMM sockets
Supports 100MHz SDRAM with SPD
System ManagementOptional National LM79 and LM75 ASICs
with onboard alarm for monitoring temperature,
supply voltages, and fan speed
Intel LANDesk Client Manager software
(optional with LM79 installed)
Chassis intrusion detection capable
Expansion SlotsOne 32-bit AGP slot
Five 32-bit PCI Bus Master slots
Two 16-bit ISA slots
One shared ISA-PCI / seven usable slots
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/OTwo PCI bus mastering EIDE
6
http://www.tyan.com
Page 7
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)
Two serial ports (16550 UARTs)
One ECP/EPP parallel port
One IR (InfraRed) I/O interface port
Two USB rev 1.2 (universal serial bus)
connectors
One PS/2 mouse connector
One PS/2 keyboard connector
Ensoniq ES 1371 AudioPCIAC97 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
Warranty3 year manufacturers warranty
INTRO
Software Specifications
OSOperates with MS-DOS, Windows 3.x,
Windows for WorkGroup 3.x, Windows 95,
Windows 98, Windows NT, OS/2, Novell
Netware, Solaris, and SCO Unix
Technical 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).
S1846 Tsunami ATX
7
Page 8
Chapter 1
Introduction
Help resources:
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. Email Tyan tech support:techsupport@tyan.com
5. Call Tyan 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.
http://www.tyan.com
8
Page 9
INTRO
S1846 Tsunami ATX
This page left blank intentionally.
9
Page 10
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 Users Manual
(1) CPU Retention module
(1) Driver Disk (S1846S only)
(1) System Management & Driver CD with Ensoniq AudioPCI manual and
installation instructions (1846SLA only)
Precautions
Whats the first thing I should do?
The first thing you should do is read this users manual. It contains important
information which will make configuration and setup much easier.
Here are some precautions you should follow when installing your
motherboard:
(1) Ground yourself properly before removing your motherboard
!
important!
from the antistatic bag. Unplug the power from your computer
and then touch any metal part on the computer case. (Or wear a
grounded wrist strap.)
http://www.tyan.com
10
Page 11
(2) Hold the motherboard by its edges and do not touch the bottom of
the board.
(3) Avoid touching motherboard components, IC chips, connectors,
and leads.
(4) Avoid touching pins of memory modules and chips.
(5) Place motherboard on a grounded antistatic surface or on the
antistatic bag.
Having reviewed the precautions above, the next step is to take the motherboard out of the cardboard box and static bag, hold it by its edges, and place it
on a grounded antistatic surface, component side up. Inspect the board for
damage.
warning
DO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN DAMAGED!
Press down on any of the socket ICs if it appears that they are not properly
seated (the board should still be on an antistatic mat). Do not touch the bottom
of the board. Remember, dont take any electronic device out of its protective
bag until you are ready to actually install it into the computer case. If you do
not ground yourself, you risk zapping the motherboard or adapter card.
Subsequent problems may not arise immediately because electrostatic discharge damage, unlike physical damage, causes the device to fail over time.
*Power Supply Requirement: ATX Power Supply should be 2.01 compliant.
Standby current must be 750mA or higher (SB5V = 0.75A)
INSTALL
Installation Steps
You are now ready to install your motherboard. The mounting hole pattern of
the Tsunami ATX matches the ATX system board specifications. Your chassis
should be able to accomodate an ATX motherboard and have an ATX power
supply.
1.
1. Set Jumpers
2.
2. Mount Motherboard in Chassis
3.
procedure
3. Install Memory
4. Install CPU & Cooling Fan
5. Connect IDE and Floppy Drives
6. Connect Power Supply
7. Install Add-on Cards
8. Connect PS/2, USB, Serial and Parallel Devices
S1846 Tsunami ATX
11
Page 12
Chapter 2
Board Installation
What is a Jumper?
In this manual, the terms closed and on are used when referring to jumpers
(or jumper pins) that are active; open and off are used when referring to
jumpers (or jumper pins) that are inactive. See the Figure 2-1 for examples of
on and off pins and jumpers. The square pin in the diagram is Pin 1.
Jumpers and pins are connected by slipping the blue plastic jumper connector
overtop of two adjacent jumper pins (indicated by 1-2 or 2-3). The metal rod
inside the plastic shell bridges the gap between the two pins, completing the
circuit. See Figure 2-2 for more examples of pin connections.
The tables and maps on the following pages will help you set the jumpers for
CPU speed, Infrared, and external connector pin assignments, among others.
The miniature motherboard maps will help you locate the jumpers on your board.
A full-page map of the motherboard can be found on the next two pages.
2 pin jumpers
off on
Figure 2-1
3 (or more) pin jumpers
1-2 2-3 open
1
2
3
1
2
3
Figure 2-2
12
1
2
3
http://www.tyan.com
Page 13
Map of Motherboard Jumpers
Mouse
Keyboard
USB2
USB1
COM1
COM2
Line in
Joystick
Microphone inSpeaker out
J13
Printer Port
JP17
1
1
J11
J10
1
FAN2
1
Ensoniq
Audio PCI
CON3
1
1
CON2
National
LM75
1
FAN 1
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
JP2
3 volt
1
lithium
battery
ATX power connector
1
DIMM bank 3
Secondary IDE connector
1
JP10
JP11
JP8
JP12
1
JP13
JP7
1
EXTSMI
1
JP4
Floppy drive connector
1
Primary IDE connector
J7
J8
INSTALL
PCI slot 5
ISA slot 2
Flash BIOS
National
ISA slot 1
LM79
The tiny 1s next to jumpers of 3 pins or more indicate the position of pin 1
for that jumper.
S1846 Tsunami ATX
13
1
FAN3
Page 14
Chapter 2
Board Installation
Picture of Motherboard Features
Slot One Connector
Fuse 1
Fuse 2
PS/2 ports
USB ports
COM2 LPT1 COM1
Joystick
Intel 443BX
LM75
3 DIMM slots
AGP port
Audio ports
Ensoniq 1371
AudioPCI
AC97codec
National Super I/O
5 PCI slots
F1 (Fuse 1), F2 (Fuse 2): Rated 30V DC, hold current at 1.6 A.
2 ISA slots
14
LM79
http://www.tyan.com
BiColor LED
Intel PIIX4e
OnBoard
Speaker
AMIBIOS
Page 15
1. Setting Jumpers
1-A. CPU Speed Settings (JP10-JP13)
There are two steps to set the CPU speed. First, set the clock multiplier with
jumpers JP10-JP13 according to the specification of your CPU using the chart
below. There is no need to set the bus speed. The motherboard auto-detects
the bus speed of the CPU. Presently all Celeron CPUs use a 66MHz bus speed.
Tyan does not recommend operating CPUs, memory, or PCI Bus at higher than
rated speed. Tyan takes no responsibility for any problems related to
overclocking any bus or component on the system board.
0XOWLSOLHU%XV6SHHG&38VSHHG-3-3-3-3
VHW-PSUV
RQERDUG
212))2))21
21212))2))
VHWLQ%,26
2))212121
212))212))
2))212))21
2))2))2121
2))2))2))21
2))212121
INSTALL
S1846 Tsunami ATX
JP10, JP11,
JP12, JP13
15
Page 16
Chapter 2
Board Installation
1-B. Front Panel Assignment (1x27: Jumper J8)
sniP2-101-661-3102-8132-2272-42
noitcnuF
-ngissA
tnem
rewoP
ffO/nO
rewoP=1
ffO/nO
DNG=2
deRarfnI
V5=6
XRRI=8
DNG=9
RI=01
XT
DDH
DEL
-DEL=51
+DEL=61
DELrewoP
DNG=81
CN=91
rewoP=02
DEL
1-C. Wake-On LAN (CON3) & FAN Connectors
123
)NALno-ekaW(3NOC
3-1NAF
- Fan1 connector corresponds to Rear Chassis Fan.
- Fan2 connector corresponds to CPU 1 slot.
- Fan3 connector corresponds to Front Chassis Fan.
ybdnatS
V5
DNGCCVrotinoMnaF
DNG
)hgiH
teseR
hctiwS
DNG=22
teseR=32
evitcA,nOrewoP(ekaW
rekaepS
V5=42
lanretnI=62
rekaepS
-rekaepS=72
1-D. Clear CMOS and Reset Password (Jumper JP2)
If you have been locked out of your system because you forgot your pass
word or set the CMOS incorrectly, follow the instructions below.
1. Power off the system
2. Set jumper JP2 to pins 2 and 3 (see next page for location of JP2).
3. Wait for 2 seconds, then return
jumper JP3 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.
2PJ
tluafeD
SOMCteseR
2-1
3-2
FAN2
JP17
CON3
16
FAN1
JP2
JP4
JP7, JP8
FAN3
http://www.tyan.com
J7
J8
Page 17
1-E. IR/Floppy
Set to 2 FDD if you are using 2 floppy drives.
DDF/RI4PJ7PJ8PJ
DDF2
NO3-22-1
FFO2-13-2
)tluafeD(DDF1/RI1
1-F. Onboard Sound Enable (S1846SLA only)
dnuoS71PJ
elbanE
elbasiD
FFO
NO
1-G. 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 systems case.
Soft Power Connector
The Soft Power Connector is pins 1-2 of jumper block J8. The Tsunami ATX
uses the chipset for power management, including turning on and off the
system. If the Power Button Function option in the BIOS Power Management
Menu is set to On/Off (which is the default), pressing the power button once
after the BIOS has booted up will turn the system on and off. If the Power
Button Function option is set to Suspend, pressing the power button once will
wake the system or send it to Suspend mode. In this case, you cannot turn the
system off unless you shut down through the Windows operating system or
you hold the power button down for four seconds.
INSTALL
Hardware Reset Switch Connector Installation
The Reset switch on your cases 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.
S1846 Tsunami ATX
17
Page 18
Chapter 2
Board Installation
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
J9
for hardware control and queries.
Ensoniq Audio Connectors
(S1846SLA only)
J13, J11
J10
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.
CMOS RTC
The Real Time Clock (RTC) circuit, which provides the date and time for the
system is integrated into the 440BX/GX or Via Apollo Pro Plus AGPset. If the
external battery for the RTC is low, it will prevent your system from POSTing,
!
and you will not get a display. Normally the life span of an external battery is 2
important!
years. If yours is running low, you will need to replace it with a new 3V lithium
battery (Sony CR2032).
Battery
JP16
Flash EEPROM
The Tsunami ATX uses flash memory to store BIOS firmware. It can be easily
updated if necessary using the flash utility (see page 67). Tyan does not
recommend flashing the BIOS unnecessarily. Check the Tyan web site for the
latest BIOS revision.
2. Mounting the Motherboard in the Chassis
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
http://www.tyan.com
18
Page 19
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.
3. Installing Memory
Since TYAN boards are manufactured with performance in mind, you should
use add-in components that match. Some DIMM modules may seem to be high
quality because of name or feel but that does not guarantee real-world
usability. Some cheaper or OEM memory may have brand-name components,
but they may contain inferior or substandard parts which do not meet the
critical tolerances our products require. Because of this, your memory may not
work correctly in a TYAN board though it may work well in a competitors
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 Corsair Microsystems,
Kingston Memory, and QesTec Incorporated. These DIMMs have proven to
be very stable on our boards and perform extremely well.
INSTALL
S1846 Tsunami ATX
19
Page 20
Chapter 2
Board Installation
Figure 2-3
To install your DIMMs, line your module up so that the pins fit into the slot.
There is only one way that your DIMM can fit properly. Make sure that the
short row of pins is lined up with the short gap in the DIMM slot. Figure 2-3
above shows how to sit the DIMM into its slot. To insert the DIMM, push
down vertically on the module with even force, as shown in the photo. Do not
shove one end in first; doing so will bend the DIMM pins.
To lock the DIMM into place, push the plastic clips on either end of the slot
onto the notches in the ends of the DIMM (see Figure 2-4 on the next page).
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.
The Tsunami ATX uses a 64-bit data path from memory to CPU and can
accommodate up to 1 GB of SDRAM. The 168-pin DIMMs (Dual In-line
Memory Modules) must be of the 3.3V, unbuffered variety. The position of the
notch in the SDRAM key position will tell you whether or not a DIMM is
http://www.tyan.com
20
Page 21
Figure 2-4
unbuffered (see the Figure 2-5 below). All installed memory will be automatically detected, so there is no need to set any jumpers.
INSTALL
Buffered
Unbuffered
168-pin DIMM
RFU
Figure 2-5
Some details of memory installation:
At least one unbuffered DIMM must be installed for the system to POST.
!
The mainboard supports 32MB, 64MB, 128MB SDRAM; and supports
important!
256MB registered SDRAM DIMM modules. *
PC-100 DIMM is required if CPU bus speed is at 100MHz
S1846 Tsunami ATX
21
Page 22
Chapter 2
Board Installation
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
Warning! The 256MB DIMMs represented in the table are REGISTERED
memory chips. DO NOT use registered and non-registered memory chips
simultaneously! (Check with your memory dealer for more information).
warning
See www.tyan.com for latest memory compatibility information.
Cache Memory
Celeron processors have the L2 (Level 2) cache built into their architecture, so
there is no need for an L2 cache on the motherboard. The Celeron processor
has a physical L2 cache size of 128KB and a cacheable memory area of 512MB.
22
http://www.tyan.com
Page 23
4. Installing the CPU and Cooling Fan
Pentium II or Pentium III processors (233 through 500MHz) can be used on the
Tsunami ATX. Please refer to page 15 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 motherboard must be placed on a
flat surface. You should be able to insert the CPU with minimal, but
firm, pressure. Do not press down hard on the CPU.
Currently, two types of cooling mechanisms are produced for Pentium II
processors: active (figure 2-6a) and passive (figure 2-6b). These two types of
cooling methods essentially perform the same function. The active cooler is
equipped with a cooling fan and heat sink, while the passive cooler is simply a
larger heat sink with no fan. The type of cooler used has no effect on performance, and both types can be installed in the Slot 1 connector on the Tsunami
ATX board.
INSTALL
Figure 2-6a Figure 2-6b
Installing CPU Retention Modules
Installation of a Pentium II processor requires a CPU retention module, which
is first secured onto the motherboard. Tyan offers a variety of retention
mechanisms for the different CPU types. See Appendix 1 for options.
Installation of SECC2 CPUs (Figure 2-7) with the
retention modules require a little more attention
and care. Instructions for SECC2 CPU installation
can be found on pages 26-29.
Figure 2-7
S1846 Tsunami ATX
23
Page 24
Chapter 2
Board Installation
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) See
Figure 2-8.
Drop the retention module (Figure 2-9) 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
Figure 2-9
module to the board. Warning: Do not overtighten the screws as you may damage the
module and/or the motherboard.
Figure 2-8 - Pentium II Slot Connector and Key Pin
Installing the CPU with Active Cooling
When the retention module is securely installed, you are
ready to plug in the CPU. Press down firmly on the CPU until
you hear a click (see Figure 2-10). This clicking sound
indicates that the CPU is fully locked into the retention
module. If you have an active cooler, you will also need to
connect the CPUs 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 CPUs cooling fan cable into the cooling fan
connector on the board. There will be a plastic clip assembly
similar to that of the ATX power connector that will force you to connect the
fan cable correctly (see Figure 2-11 on the following page).
24
Figure 2-10
http://www.tyan.com
Page 25
Figure 2-11
Installing the CPU with Passive Cooling
The installation of the CPU with passive cooling differs only slightly from that of
the active. Your passive cooling 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 previous section.
The heat sink mount (Figure 2-12) has
two pins on the bottom 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 Slot 1 connector.
Figure 2-12
INSTALL
Insert the heat sink mount into the holes on the motherboard. When the bracket
is properly inserted into the holes on the motherboard, you will hear a clicking
noise.
S1846 Tsunami ATX
25
Page 26
Chapter 2
Board Installation
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. You will hear a clicking
noise when the CPU is locked securely into the module.
The heat sink lock (Figure 2-13) has four
notches which will correspond to the four
pins on the heat sink mounting bracket.
Gently slide the lock between the heat
Figure 2-13
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. To 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 2-14) 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.
To remove the CPU, move the locks to the center of the
CPU. A click will be heard when the CPU has been unlocked. Gently pull up on
the CPU, taking care not to bend the motherboard or the CPU retention module.
To remove the lock from the retention module, gently press the ends of the locks
inward and pull.
Figure 2-14
Installing SECC2 CPUs
The major physical difference between original Pentium IIs (SEC)and new
Pentium II/P-III (SECC-2) is the plastic CPU enclosure. As Figure 2-15 indicates,
the plastic CPU enclosure covers the entire CPU card of regular Pentium IIs. On
the other hand, the plastic CPU enclosure covers only the side faces of the
SECC2 Pentium II card.
Due to the physical differences in the SECC2 CPU, installing the retention
modules requires a different technique than the ones previously discussed.
http://www.tyan.com
26
Page 27
SEC Pentium II SECC-2 Pentium II
Figure 2-15
On both sides of the SECC-2 CPU reside the lower tabs of the aluminum heat
sink and the bottom corners of the plastic CPU enclosure (see Figure 2-16).
These tabs and corners should fit into the retention braces.
Warning: DO NOT first screw the retention braces onto the motherboard by
warning
themselves. If you do, you will have difficulties inserting the CPU into the
retention braces and CPU slot.
Lower Tabs
INSTALL
S1846 Tsunami ATX
Enclosure
Corners
Figure 2-16
27
Page 28
Chapter 2
Board Installation
Currently, the retention module recommended for securing the SECC2 CPU
(including P-III & Celeron) is included in the motherboard package. The
retention braces consist of two small components that resemble book-ends.
(See Figure 2-17 )
The first installation step is to set the retention braces properly against the
sides of the CPU. The lower tabs of the
aluminum heat sink and the bottom Slits
corners of the plastic enclosure should
loosely fit within the two slits of the braces.
Figure 2-17
Figures 2-18 below show a top view and side view of a retention brace
positioned against one side of the SECC2 CPU.
Top View
Side View
Figure 2-18
When both braces are properly positioned, press both braces against the
sides of the CPU and carefully lift them over the CPU slot on the motherboard.
Warning - Because the braces are loosely held against the CPU, they can
easily fall off. You must hold both braces against the CPU while lifting all
three components above the motherboard. (See Figure 2-19 on the following
page.)
http://www.tyan.com
28
Page 29
Note: board pictured
is used only to
illustrate installation
of CPU & retention
mechanism, and may
Figure 2-19
not be a Tiger 100.
Be sure to line up the holes of the retention brace with the screws protruding
from the motherboard. At the same time, make sure the CPU is lined up with
the CPU slot. Lower the three components onto the motherboard. The screws
on the motherboard should fit through the holes of the retention braces and
the CPU should fit into the slot. Secure the retention braces with the nuts
provided in the package. The end result should look like Figure 2-20.
INSTALL
Figure 2-20
When removing the CPU, unscrew the nuts on the retention braces and
remove all three components at once. This may require careful firm tugs to pull
the CPU out of its slot.
S1846 Tsunami ATX
29
Page 30
Chapter 2
Board Installation
5. Connecting IDE and Floppy Drives
The colored stripe on a ribbon cable should face toward the battery on the
motherboard. In Figure 2-21 below, 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. The primary IDE connector is black; the secondary IDE connector is
white.
Figure 2-21
In most cases, this is the proper way of connecting your IDE cable to the
harddrive. Figure 2-22 on the following page 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
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.
http://www.tyan.com
30
Page 31
Pin 1
Figure 2-22
Connecting Floppy Drives
Pin 1 on the floppy cable is usually denoted by a red or colored stripe down
one side of the cable (see Figure 2-23 below). 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.
INSTALL
S1846 Tsunami ATX
Figure 2-23
31
Page 32
Chapter 2
Installation
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 2-23 for a detailed anatomy of the floppy cable. Remember, you
can only have 2 floppy drives connected at any given time.
The color stripe on the cable should face toward the top of your chassis, or
toward the big white B printed on the motherboard. Please refer to your
documentation for proper installation.
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.
Light on the floppy is on constantly: a dead giveaway that the cable
is on backwards. Reverse the cable at the motherboard end and try
again.
6. Connecting the Power Supply
Tyan recommends using an ATX power supply that conforms to industry
standard revision 2.01. The Tomahawk BX/A+ motherboard comes equipped
with one onboard power connector.
Figure 2-24 on the following page shows an ATX power connector. When
plugging in the power connector, make sure that the plastic clip on the power
connector is aligned with the plastic tab on the onboard connector (see Figure
2-25 on the following page).
warning
Make 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 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.
32
http://www.tyan.com
Page 33
Figure 2-24 Figure 2-25
7. Installing Add-on Cards
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 device.
NEVER force a card into a slot. If it doesnt fit, look at the socket
!
important!
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. Dont 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
INSTALL
S1846 Tsunami ATX
33
Page 34
Chapter 2
Board Installation
If you follow these basic guidelines, there shouldnt 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.
8. Connecting PS/2, USB, Serial & Parallel Devices
This board includes ports for USB, PS/2 mouse, and PS/2 keyboard devices.
Note that, for this 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.
Connecting 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
may damage your system.
Figure 2-26
34
http://www.tyan.com
Page 35
Figure 2-26 above shows the ATX double row connectors on this board. The
Com and Printer ports, as well as the other ports, are labeled. The S1846SLA
also has Audio connectors (game, line-in, mic, spkr).
Note: Only TYAN cables will work on this motherboard. If you are using an
existing case with old cables, your system will not function properly.
You 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 had a fairly
uneventful time installing our products. If you did encounter problems, your
dealer will be able to help you, or you can consult one of our many technical
support resources (see page 8).
Frequently Asked Questions
See the Tyan web site for more detailed FAQ.
Q: Why dont 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 440BXs 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
below shows a DIMM module with an EEPROM chip.
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.
INSTALL
S1846 Tsunami ATX
RFU
EEPROM
Unbuffered
Buffered
168-pin DIMM
35
Page 36
Chapter 3
BIOS Configuration
chapter 3
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
You can select a Setup option by using the following keyboard keys:
.H\)XQFWLRQ
7DE0RYHVIURPRQHER[WRWKHQH[W
$UURZNH\ V &K D Q J HV V HOHFWLRQV ZLW KLQ DE R [
(QWHU2SHQVKLJKOLJKWHGVHOHFWLRQ
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
Month: Jan - Dec
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
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.
IDE Device Configuration: To 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 40). Consult
the table below to see how to configure various drive types yourself.
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 ATX
39
Page 40
Chapter 3
BIOS Configuration
Fast Programmed I/O Modes: Programmed Input/Output is a method of
transmitting data between devices that uses the systems CPU as part of the
data path. There are 6 modes - 5 with their own transmission speed and 1 auto
mode. To 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 Transfer 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 Type, you can enter the hard disk drive
parameters yourself. The drive parameters are as follows:
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.
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
Quick BootDisabledDisabled
Primary M aster ARMD Emulated asAutoAuto
Primary Slave ARM D Emulated asAutoAuto
Secondary Master ARMD Emulated as AutoAuto
Secondary Slave ARM D Emulated asAutoAuto
1st Boot DeviceFloppyFloppy
2n d Boot Devi ce1st I DE-HDD1st I DE - HDD
3r d Boot Devi ceATAPI CDRO MATAPI CDRO M
Try Other Boot DevicesYesYes
Floppy Access ControlRead-WriteRead-Write
Har d Di sk Access Contr olRead - Wri teRead -Wr i te
42
http://www.tyan.com
Page 43
Settings Chart (Continued)
6HWWLQJ2SWLRQ2SWLPDO'HIDXOW)DLO6DIH'HIDXOW
S.M.A.R.T. for Hard DisksDisabledDisabled
Boot Up Num-LockOnOn
PS/2 M ouse SupportEnabledEnabled
Primary DisplayVGA/EGAVGA/EGA
Password CheckSetupSetup
Boot To OS/2NoNo
I n te rna l CacheW r iteBackWri t e Back
System BIOS CacheableEnabledDisabled
Cache Bus ECCEnabledEnabled
Default Primary VideoAGPAGP
MPS Revisi on1. 11. 1
C000,16K ShadowCachedCached
C400,16K ShadowCachedCached
C800,16K ShadowDisabledDisabled
CC00,16K ShadowDisabledDisabled
D000,16K ShadowDisabledDisabled
D400,16K ShadowDisabledDisabled
D800,16K ShadowDisabledDisabled
DC00,16K ShadowDisabledDisabled
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:
ATAPI 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, ATAPI 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, ATAPI 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, ATAPI CDROM.
Try 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 SMART (System
http://www.tyan.com
44
Page 45
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.
BIOS
Boot To 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 Yes
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 WriteBack.
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.
S1846 Tsunami ATX
45
Page 46
Chapter 3
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:
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:
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
* U SB KB/M ouse Legacy SupportDisabledDisabled
* Port 64/60 EmulationDisabledDisabled
SERR#DisabledDisabled
PERR#DisabledDisabled
WSC# HandshakeEnabledEnabled
USW C Write Po stEnabledEnabled
Master Latency Timer (Clks)6464
Multi-Trans Timer (Clks)3232
PCI1 to PCI0 AccessDisabl e dDisab l e d
Meth od of Memor y De te ctionAuto & SPDAu t o & SPD
DRAM Integrity ModeN/AN/A
S1846 Tsunami ATX
47
Page 48
Chapter 3
BIOS Configuration
Settings Chart (continued)
6HWWLQJ2SWLRQ2SWLPDO'HIDXOW)DLO6DIH'HIDXOW
DRAM Refresh Rate1 5.6 us15.6 us
Memory HoleDisabledDisabled
SDRAM RAS# to CAS# Dela y3SCL K s3 SC L K s
SDRAM RAS# Precharge3SCLKs3SCLKs
Power Down SDRAMDisabledDisabled
ACPI Control RegisterDisabledDisabled
Gated ClockDisabledDisabled
Graphics Aperture Size64 MB64 MB
Search for MDA ResourcesYesYes
AGP Multi-Trans Timer (AGP Clks)32Disabled
AGP Low- Pri orit y Tim er (Clks )16Di s ab le d
AGP SERRDisabledDisabled
AGP Pari ty E r r or Re s p onseDi sa b l e dDisa b l e d
8bit I/O Recovery TimeDisabledDisabled
16bit I/O Recovery Time DisabledDisabled
PII X4 SERR#DisabledDisabled
USB Passive ReleaseEnabledEnabled
PII X4 Passive ReleaseEnabledEnabled
PII X4 Delayed TransactionDisabledDisabled
Type FDMA Buffer Control1 DisabledDisabled
Type FDMA Buffer Control2DisabledDisabled
DM A-0 TypeNormal ISANormal ISA
DM A-1 TypeNormal ISANormal ISA
DM A-2 TypeNormal ISANormal ISA
DM A-3 Type Normal ISANormal ISA
DM A-4 TypeNormal ISANormal ISA
DM A-5 TypeNormal ISANormal ISA
DM A-6 TypeNormal ISANormal ISA
DM A-7 TypeNormal ISANormal ISA
CPU Bus FrequencyAutoAuto
* Setting option not selectable.
USB Function
Set this option to Enabled to enable USB (Universal Serial Bus) support. The
settings are Enabled or Disabled.
http://www.tyan.com
48
Page 49
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. With 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:
gnitteSnoitpircseD
delbanE.delbaneeraO/IotsetirwdetsopCWSU
delbasiD.delbasideraO/IotsetirwdetsopCWSU
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-Trans 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.
S1846 Tsunami ATX
49
Page 50
Chapter 3
BIOS Configuration
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:
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.
http://www.tyan.com
50
Page 51
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 Yes or No.
AGP Multi-Trans 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.
S1846 Tsunami ATX
51
Page 52
Chapter 3
BIOS Configuration
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 DELAYED 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.
TypeF 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 Type
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.
http://www.tyan.com
52
Page 53
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
ACPI Awar e O / SNoN o
Power Management / APMEnabledEnabled
Power Bu tton Fu n cti onOn/O ffOn /O ff
Green PC M onitor Power StateSuspendStand By
Video Power Down ModeSuspendDisabled
Hard Disk Power Down ModeSuspendDisabled
Hard DiskTime Out (M inute)DisabledDisabled
Power Saving TypeSleepSleep
Standby / Suspend Timer Unit4 min4 min
Standby Time OutDisabledDisabled
Suspend Time OutDisabledDisabled
Slow Clo ck Ratio50% - 62.5%50% - 62.5%
Display ActivityIgnoreIgnore
S1846 Tsunami ATX
53
Page 54
Chapter 3
BIOS Configuration
6HWWLQJ2SWLRQ2SWLPDO'HIDXOW)DLO6DIH'HIDXOW
Device 6 (Serial port 1)MonitorM onitor
Device 7 (Serial port 2)MonitorM onitor
Device 8 (Parallel port)MonitorM onitor
Device 5 (Floppy disk)M onitorM onito r
Device 0 (Primary master IDE)M onitorM onitor
Device 1 (Primary slave IDE)MonitorMonitor
Device 2 (Secondary master IDE)M onitorM onitor
Device 3 (Secondary slave IDE)MonitorM onitor
LAN Wake-upDisabledDisabled
PC 98 Power LEDDisabledDisabled
Fan OFF at SuspendEnabledEnabled
RTC Wake-upDisabledDisabled
*Ho urN/AN/A
*M inuteN/AN /A
* Setting option not selectable.
ACPI Aware 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.
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
http://www.tyan.com
54
Page 55
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 Type
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 systems
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.
BIOS
S1846 Tsunami ATX
55
Page 56
Chapter 3
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 Wake-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 ATX 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.
FAN 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.
http://www.tyan.com
56
Page 57
RTC Wake-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
Plug and Play Aware O/SYesYes
PCI Latency Timer (PCI Clocks)6464
PCI VGA Palette SnoopDisabled Disabled
Allocate IRQ to PCI V GAYesYe s
PCI IDE BusM asterDisabled Disabled
OffBoard PCI IDE Car dAutoAuto
*OffBoard PCI IDE Primary I RQDisabled Disabled
*OffBoard PCI IDE Secondary IRQDisabled Disabled
PCI Sl ot 1 IR Q Pr ior it yAutoAut o
PCI Slot2 IR Q Pri ori tyAut oAuto
PCI Slot3 IR Q Pri ori tyAut oAuto
PCI Slot4 IR Q Pri ori tyAut oAuto
DM A Channel 0PnPPnP
DM A Channel 1PnPPnP
DM A Channel 3PnPPnP
DM A Channel 5PnPPnP
DM A Channel 6PnPPnP
DM A Channel 7PnPPnP
IRQ3PCI/PnPPCI/P nP
IRQ4PCI/PnPPCI/P nP
IRQ5PCI/PnPPCI/P nP
IRQ7PCI/PnPPCI/P nP
IRQ9PCI/PnPPCI/P nP
IRQ10PCI/PnPPCI/PnP
IRQ11PCI/PnPPCI/PnP
IRQ12PCI/PnPPCI/PnP
IRQ14PCI/PnPPCI/PnP
IRQ15PCI/PnPPCI/PnP
Reserved Memory SizeDisabled Disabled
*Reserved M emory AddressC8000C8000
PCI Device Search OrderFirst-LastFirst-Last
BIOS Devnode for Shadow RAMDisabled Disabled
* Setting option is not selectable
58
http://www.tyan.com
Page 59
Plug and Play Aware 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:
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
S1846 Tsunami ATX
59
Page 60
Chapter 3
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, INTA,
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, INTA,
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.
http://www.tyan.com
60
Page 61
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
S1846 Tsunami ATX
61
Page 62
Chapter 3
BIOS Configuration
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
Power InterruptionDisabledDisabled
Overclock Warning M essageEnabled Enabled
LM 79 IN04.084.08
LM 79 IN14.084.08
LM 79 IN24.084.08
LM 79 IN36.856.85
LM79 IN415.5 015.50
LM79 IN5-14.28-14.28
LM79 IN6-6.20-6.20
Onboard FDCAutoAuto
Onboard Serial Port 13F8h3F8h
Onboard Serial Port 22F8h2F8h
Serial Port 2 ModeNormalNormal
*IR Dup lex Mode
N/AN/A
62
http://www.tyan.com
Page 63
Default Settings Chart (Continued)
6HWWLQJ2SWLRQ2SWLPDO'HIDXOW)DLO6DIH'HIDXOW
*IR Receiver P inIRRX1IRRX1
Onboard Parallel Port378378
Parallel Port ModeNormalNormal
*EPP Ver sionN/AN/A
P arallel Po rt IRQ77
*Parallel Port DM A ChannelN/AN/A
Onboard IDEBothBoth
* Setting Option is not Selectable
Overclock Warning 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.
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.
BIOS
S1846 Tsunami ATX
63
Page 64
Chapter 3
BIOS Configuration
IR Transmission 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.
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:
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
newer devices; consult your devices 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 ATX
65
Page 66
Chapter 3
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 ]
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.
http://www.tyan.com
66
Page 67
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. 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.
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.
BIOS
S1846 Tsunami ATX
67
Page 68
Chapter 4
System Resources
chapter 4
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.
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.
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
76
http://www.tyan.com
Page 77
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 Wait 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.
Tyan offers two different options for securing Intels Pentium II CPUs onto the
motherboard. Each option provides retention for both older Pentium IIs as
well as newer Pentium IIs (including Celeron).
OPTION 1:
Two 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 1Figure 2
http://www.tyan.com
80
Page 81
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
S1846 Tsunami ATX
81
Page 82
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 computers 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 IBMs PC.
ATAPI (AT A ttachment 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 AT 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
82
Page 83
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 computers 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.
GLOSSARY
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 ATX
83
Page 84
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.
CMOSComplementary 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).
DIMMDual 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 CPUs 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.
http://www.tyan.com
84
Page 85
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.
TYANs 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.
GLOSSARY
Handshaking is a form of encryption. One system, typically the server,
sends an encryption scheme to another agent, typically a client. Thus, the
clients 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).
S1846 Tsunami ATX
85
Page 86
Appendix 2
Glossary
IDE INT (IDEInterrupt) 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.
http://www.tyan.com
86
Page 87
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.
GLOSSARY
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 systems 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 ATX
87
Page 88
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.
http://www.tyan.com
88
Page 89
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 dinterférence 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. F1 (Fuse 1), F2 (Fuse 2): Rated 30V DC, hold current
at 1.6 A.
Note: The joystick port maximum output rating is 9 amperes at 5 volts.
S1846 Tsunami ATX
89
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.