Intergraph S1686D User Manual

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TYAN S1686D

TAHOE2I ATX

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Pentium II 233 through 300 MHz

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440 FX PCI-ISA System Board

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Revision 1.0

Based on Rev 0.3 (5/20/97)

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TABLE OF CONTENTS

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

1.1 Overview................................................................4

1.2 Hardware Specifications..........................................5

1.3 Software Specifications.......................................... 6

1.4 Manual Organization .............................................. 6

1.5 Manual Conventions.............................................. 7

1.6 CPU Prototypes .................................................... 7

2. Board Installation.............................................................. 9

2.1 Unpacking.............................................................. 9

2.2 Installation of the motherboard ............................... 9

2.3 S1686D Board Layout & Jumper Locations..............10

2.4 CMOS RTC............................................................16

2.5 Installing cables and Connectors ............................16

2.6 DRAM Installation ...............................................18

2.7 L2 Cache Memory/SRAM Memory ..........................19

2.8 VRM (V oltage Regulator Modules)..........................1 9

2.9 Peripheral Device Installation...................................1 9

2.10 Connecting the Power Supply..................................19

3. CPU Installation and Removal ........................................ 20

3.1 Installation of Pentium II Boxed (Active) Processors.2 0

3.2 Installing CPUs...................................................... 21

3.3 Installing CPU Cooling Fans.................................... 2 1

3.4 Installation and Removal of Passive Processors ....... 2 2

4. T roubleshooting .............................................................. 20

4.1 Troubleshooting Procedures ....................................2 5

4.2 T echnical Support Procedures .................................27

4.3 Returning Merchandise for Service.......................... 2 7

Appendix: LM78 System Hardware Monitor and LANDesk

Client Manager (LDCM)...................................................... 28

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Chapter 1: Introduction

1.1 Overview

The S1686D system board--T AHOE 2I ATX, is a quality, high performance, dual processing motherboard designed for Intel's latest generation Pentium II microprocessors. This motherboard utilizes Intel's 440FX PCI series chipset and supports CPU speeds of 233MHz to 300MHz. The S1686D, designed for a dual system, will also support two Pentium Pro processors with T yan riser cards.

The S1686D's PCI Local Bus provides high performance capabilities that are ideal for a wide range of demanding applications such as: CAD, CAM, CAE, networking, multi-user environments, database management, desktop publishing, image processing, 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: on-board dual channel PCI PIO (Mode 3 & 4), DMA (Mode 2) IDE, on-board floppy controller, and on-board high speed I/O.

To provide you with the best board possible on the market, Tyan has also incorporated into the board design the newest technologies available in the industry . These new features include the following:

1 . LM78 Power Monitoring (See Appendix for details).

2 . Power off through Software for Windows 95: This function allows the user to turn off the ATX power supply and shut down the system by clicking on the "Shut Down" button on the "Start Menu"without hitting the power on/off switch on the case.

3. Recovery after Power Interruption: When this function is set to "Enabled" in the CMOS Setup, the power of the system will be automatically turned on as soon as the power is recovered after a power interruption (outage). The user does not need to hit the Power-on switch on the case to turn on the system power.

4. W ake on LAN: The S1686D provides the capability for the user to turn on a system through another server in the Local Area Network.

5. An on-board 12V to 5V Convertor gives support for keyboards with built-in speakers, such as NMB Concert Master Keyboards.

For more information about your S1686 D board, please refer to Tyan

Computer's web site located at http://www .tyan.com

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1.2 Hardware Specifications/Features

The S1686D board is designed for the demanding end-user who wants to accomplish complicated tasks in a user-friendly environment. T o achieve this purpose, the main board includes the following features:

CPU Information Intel Pentium II 233 MHz through 300 MHz (233MHz,

266 MHz, 300 MHz) CPUs. T wo Pentium II Processor slots Supports Pentium Pro 150-200 MHz (150 MHz, 166MHz, 180MHz, 200MHz) processors Dual on-board CPU fan headers (*This features allows you to choose from an array of processor speeds and CPU types)

Chipset Information Intel 440 FX series (Natoma) chipset.

25/30/33 MHz PCI bus (*This newest and fastest Pentium II chipset offers the fastest performance available on the market and ensures compatibility of your system.)

System RAM Eight-72 pin SIMMs (4 double banks)

Supports 5V or 3.3V memory Supports EDO (Extended Data Out), FPM (Fast Page Mode), ECC (Error Correcting Code) or Parity checking (*This feature gives you many options and upgrade paths for various memory types and sizes--up to 512 MB)

Disk Drive & System I/O

Two PCI Bus Mastering EIDE channels Supports EIDE CD-ROMs PIO Mode 3 & 4 (up to 17 MB/sec DTR) Bus Mastering Mode (up to 22MB/sec DTR) T wo floppy drives (up to 2.88 MB) Two ATX serial ports support 16550 UART's One ATX ECP/EPP parallel port

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1.3 Software Specifications

BIOS Award or AMI Plug 'n' Play flash BIOS

Deep green and Energy Star compliant. ATX CMOS setup, BIOS/CHIPSET setup and hard disk utility included. Support for easy BIOS upgrades with flash chip.

Operating System Operates with MS-DOS, Windows 3.x, W indows

for W ork Group 3.x, W indows 95, W indows NT OS/2, Novell Netware, and SCO Unix.

T yan is also a Solaris certified manufacturer.

1.4 Manual Organization

Chapter 1 "Introduction" describes the features and performance of the S1686D system.

Chapter 2 "Installation" describes the procedures of setting up the system board. Also refer to this Chapter for detailed information about jumper settings.

Chapter 3 "Installation and Removal of the CPU" gives detailed instructions on the installation and removal of the latest Pentium II--Boxed and Passive CPU's.

If you encounter any problem, refer to Chapter 4 "Trouble-shooting", which describes trouble-shooting procedures for the system.

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Refer to Addendum A (AMI BIOS Setup) and Addendum B (A ward BIOS Setup) for the BIOS Setup requirements and the CMOS Configuration Information, including instructions to change the password, to format a hard disk, and to troubleshoot CMOS errors. Both AMI and A ward BIOS documents are also available in the ADOBE Acrobat format. Please refer to the W eb Page located at ftp://ftp.tyan.com/manual/s1686da.pdf for AMI and ftp://ftp.tyan.com/manual/ s1686db.pdf for A ward BIOS information.

1.5 Manual Conventions

In this manual, the following terms are used in reference to setting up jumpers:

1. When the term "close" is used, the pin (pins) specified for the jumper should be connected (closed), and the circuit of the connecting pins will be shorted.

2. When the term "open" is used, the pin (pins) specified for the jumper should not be connected, and the circuit of the connecting pins will not be shorted.

Pin 1 2 3 4

Pins 1&2: Open

Pins 3&4: Close (Shorted)

1.6 CPU Prototypes

Currently, Intel produces two types of Pentium II processors: the Active (Boxed) Processor, and the Passive Processor. (Refer to the pictures shown on Page 8). These two types of processors are essentially the same in design. The only difference between these two types of processors lies in their cooling methods. The Active Processor is equipped with a cooling fan, and the Passive Processor is equipped with a heat sink. These two types of CPUs provide the user with the same function, and should be installed in the "Pentium II" (SEC) slots on the motherboard. (Refer to Chapter 3 for the installation and removal of Pentium II Processors).

Although the S1686D motherboard is designed for a dual system, it can also accommodate a single CPU. However, when a single CPU configuration is chosen, the Pentium II CPU should be installed in the Pentium II Primary slot as mentioned in Chapter 3.

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Pentium II Boxed (Active) CPU

Shown with Power Connector for Fan

Pentium II (Passive) CPU

Shown with Heatsink

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Chapter 2: Board Installation

2.1 Unpacking

2.1.1. Item Checklist

The motherboard package should contain the following:

S1686D Motherboard One IDE 40 pin cable One 34 pin floppy cable User's Manual

2.1.2. Precautionary measures before handling the motherboard

Since the motherboard contains sensitive electronic components which can easily be damaged by static electricity, the motherboard should be left in its original packaging until it is ready to be installed.

Before you open the carton of your computer, do the following:

1. Make sure that you stand on an Anti-static mattress. (Do not stand on a rug or carpet.)

2. It is also strongly recommended that you wear an anti-static strap. (Anti-static straps can be purchased at computer hardware stores.)

3. With the power supply plugged in and the system turned off, touch an unpainted area of the system chassis before handling the motherboard or any component. Remember to repeat the above steps whenever you handle the motherboard or its components.

2.1.3. Proper handling of the motherboard

After opening the S1686D motherboard carton, remove the board by holding its edges. Place it on a grounded anti-static surface with the component side up. Inspect the board for damage. Do not touch the bottom of the board. (Note: DO

NOT APPLY POWER TO THE BOARD IF IT HAS BEEN DAMAGED!)

2.2. Installation of the Motherboard

You are now ready to install your motherboard. The mounting hole pattern of the S1686D matches the ATX system board specifications. Please install the board in the chassis designed for a standard ATX board form factor.

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2.3.1 Motherboard Layout

MouseKB

J17J18

USB

J22

Com1

Parallel Port

J20

J1J2

CPUFan

CPU Ret.Bracket

U55

Voltage Convert

CPU

Ret.Brack

Heat Sink Hole

J3J4

J23

CPUFan

PCI

441FX

CPU Ret.Bracket

PCI

442FX

Power Supp.

JP1

J11-14

Heat Sink Hole

J15J16

Com2

Module(key) notch

J30J36

SMC

Keyboard

V oltage Regulator Module

Heat Sink Hole

CPU Ret.Bracket

Pentium II Second (SEC). Slot

Module(key) notch

PCI Slot 1

PCI Slot 2

J38

PCI Slot 3

PCI Slot 4

PCI Slot 5

ISA Slot 1

ISA Slot 2

ISA Slot 3

SIMM 1

SIMM 2

SIMM 3

J31J32

CPU Ret.Bracket

Pentium II Primary(SEC) Slot

J33J34

J37

PIIX3

J51J52J49J50 J5 5J53J54J47J48J46

J39

Heat Sink Hole

J24J25

FDD CON

Primary IDE

Secondary IDE

I/O APIC

J57J56

BIOS (CMOS) AMI/AWARD

SIMM 5

SIMM 4

SIMM 6

J26J27

J35

J42

J44

RTC

SIMM 7

CON4

J28

KeyLock

J40

TB LED

J41

TBSW

J43

CHS Fan

J19

J60

SIMM 8

J29

(J29:See Pin Definition on P .1 1)

(For more information about this Motherboard, please visit our W eb Page and Clickable motherboards at http://www.tyan.com/html/faq.html.)

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2.3.2 Summary of Jumper Settings Refer to the following table for quick reference of jumper settings:

Jumper # Assignments Pg. #

J17 Keyboard Connector P10 J18 PS2 Mouse Connector P10 J20, J23 CPU Fan (Pin 2 is +12V) P10, P21 J19 CHS Fan (Chassis Fan) P10 J11, J12, J37 Bus Speed P12 J13-J16, J24-27 DRAM Voltage Select (Do not Change) P12 J22 Universal Serial Bus P10 J29 Pins 1,2: Power on, Pins 3,4: EXTSMI

Pins 8-10: IR2 P14,15,16 Pins15,16: IDE LED, Pins18-20: Power LED

Pins22,23: Reset, Pins24-27: Speaker J30, J36 I/O Select P13 J31-34 CPU Speed Settings P12 J49,50 LM78 IRQ Select P13 J44 CMOS Reset P12,P17 JP1 Magic Packet Connector P14

Block J29 Pin Assignments

Power on: Pins 1,2 (close)

(Cover Pins1&2 with a jumper cap to short the circuit between Pins.)

EXTSMI: Pins 3,4(close)

IR2: Pins8-10(close)

(Cover Pins3,4 with a jumper cap to short the circuit between Pins.)

(Cover Pins8-10 with a jumper cap and short the circuit between pins.)

IDE LED: Pins 15,16 (close)

Power LED: Pins 18-20 (close)

(Cover Pins15,16 with a jumper cap and short the circuit between pins.)

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(Cover Pins18-20 with a jumper cap and short the circuit between pins.)

Reset: Pins 22, 23 (close)

Speaker:Pins24-27

(Cover Pins22,23 with a jumper cap to short the circuit between pins.)

(Cover Pins24-27 with a jumper cap to short the circuit between Pins.)

23.3 Jumper Settings

CPU Speed Settings for Pentium II and Pentium Pro Processors:

CP U J31 J32 J33 J34 J37 J12 J1 1

150MHz Off On On On 3-4 On Off 166MHz Off On On On 1-2 Off On

180MHz On Off On On 3-4 On Off 200MHz On Off On On 1-2 Off On 233MHz Off Off On On 1-2 Off On 266MHz On On Off On 1-2 Off On 300MHz Off On Off On 1-2 Off On

Bus Speed

HOST SP PCI SP J37 J12 J11

Pin 1 2 3 4

J37 J12 J11 J37J12 J11

60MHz 30MHz 3-4 On Off 66MHz 33MHz 1-2 Off On

CPU60MHz PCI30MHz

CPU66MHz PCI33MHz

SIMM V oltage Select (* Do not change--set at Factory!!)

J15 J16 J26 J27 J13 J14 J24 J25

5V Close Close Close Close Open Open Open Open

3.3V Open Open Open Open Close Close Close Close

CMOS Reset: J44 (Always reset after changing BIOS)

CMOS Normal Clear (Reset) Normal Clear (reset)

Pin 1 2

J4 4 Open Close

J44 J44

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I/O Select

J30 J36 1-2 2-3 1-2 2-3

COMPort Close Open Close Open

Inf.Red Open Close Open Close

LM78 IRQ Select

IRQ# J49 J50 5 Open 1 - 2 7 Open 2 - 3 9 1 - 2 Open 1 1 2 - 3 Open

J30 J36

COM Port

Pin 1 2 3

J30 J36

Infra Red

Pin 1 2 3

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Connectors:

Magic Packet Connector: JP1

Pin# Signal

1 SB5V 2 Ground 3 SB5V 4NC 5 W ake Up Lan 6 PWROK

Block J29: (Refer to Page 11 for more information.)

Pin No. Definition

1 & 2 Power On 3&4 EXTSMI 8-10 IR2 15&16 IDE LED 18-20 Power LED 22 & 23 Reset 24-27 Speaker

J17: Keyboard Connector J18: PS/2 Mouse Connector J22: Universal Serial Bus Ports CON 5: FDD CON CON 6: Primary IDE CON 7: Secondary IDE CON2: LPT1 CON3: COM1 CON1: COM2

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Speaker Connector: J29 pins 24-27

Pin Assignments 24 +5V 25 ground 27 Speaker data

(Refer to Page 11 for more information.)

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2.4 CMOS RTC

The CMOS RTC includes an internal battery and real time clock circuit which provides the date and the time, and the CMOS Chipset Default Register for the system. Normally , the life span of a R TC internal battery is more than 10 years. This R TC chip cannot be field upgraded and can only be changed at a Tyan repairing facility.

2.5 Installing Cables and Connectors

2.5.1 Speaker Connector Installation (J29)

Your S1686D board provides a 4-Pin header to connect the speaker. The speaker is connected to pins 24-27 of J29. (Refer to Page 10 and Page 11 for detailed information.)

2.5.2 Hardware Reset Switch Connector Installation (J29)

The RESET switch on your case's display panel provides you with the HARDWARE RESET function which is the same as power on/off. The system will do a cold start after the RESET switch is pushed by the user. The RESET switch is a 2 pin connector and should be installed on pins 22 and 23 on J29. (Refer to Page 10 and Page 11 for detailed information.)

2.5.3 IDE LED Connector Installation (J29)

Y our S1686D board provides a 2-Pin header to connect the IDELED cable. When connected, the IDELED light on the panel of the case flashes if a IDE activity is detected. The cable is connected to pins 15 & 16 of J29. (Refer to Page 10 and Page 11 for detailed information.)

2.5.4 Power LED Connector Installation (J29)

The S1686D board also provides a 3-Pin header to connect the Power LED cable. When connected, the Power LED light on the panel of the case indicates power on/off of the system. The cable is connected to pins 18-20 of J29. (Refer to Page 10 and Page 11 for detailed information.)

2.5.5 IR2 Connector Installation (J29)

The S1686D board provides a 3-Pin connector (Pins 8-10 of J29) for the IR2 cable which connects to a Homing Device on the back of the case. When activated, the Homing Device will send out IR signals to remote I/O IR devices. (Refer to Page 10 and Page 11 for detailed information.)

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2.5.6 Flash ROM-Jumper J56

The S1686D uses flash memory to store BIOS Setups. It can be updated as new versions of the BIOS become available. The flash utility will guide you through the process step by step. However, we do not recommend

that you flash the onboard BIOS. This procedure should only be done by a qualified technician or a Tyan technical support engineer.

J56 determines which type of Flash EPROM is used. This jumper has been set to match the onboard BIOS chip. The factory default for the S1686D is on pins 1-2(5V). Depending on the type of EPROM used, some boards

will have J56 on pins 2-3(12V). (Refer to Page 13 for more information.)

*****************************************************

Warning!! *Do not change J56--(It has been pre-configured at the factory.)

2.5.7 Hardware CMOS & Password Reset (J44)

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

a. Power off the system.

b. Short J44 by covering Pin 1 and Pin 2 of J44 with a jumper cap and short the circuit between these two pins.

c. Wait for 5 seconds, and, then, remove the jumper cap from J44.

d. Apply power to the system.

By following the above procedures, the password and CMOS will be reset to BIOS defaults.

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2.6 DRAM Installation

The S1686D uses a 64-bit data path from memory to the CPU which will accommodate up to 512MB of RAM. The motherboard supports FPM (Fast Page Mode), EDO (Extended Data Out), ECC (Error Correcting Code), and Parity 72-pin SIMMs. The following table shows some of the available memory configurations.

Bank 0 Bank 1 Bank 2 Bank 3 T otal

4MBx2 none none none 8MB 8MBx2 none none none 16MB

4MBx2 4MBx2 none none 16MB 8MBx2 8MBx2 none none 32MB 4MBx2 4MBx2 4MBx2 4MBx2 32MB 16MBx2 none none none 32MB 16MBx2 16MBx2 none none 64MB 32MBx2 none none none 64MB 64MBx2 none none none 128MB 16MBx2 16MBx2 16MBx2 16MBx2 128MB 32MBx2 32MBx2 none none 128MB 32MBx2 32MBx2 32MBx2 none 192MB 32MBx2 32MBx2 32MBx2 32MBx2 256MB 64MBx2 64MBx2 none none 256MB 128MBx2 none none none 256MB 64MBx2 64MBx2 64MBx2 none 384MB 64MBx2 64MBx2 64MBx2 64MBx2 512MB 128MBx2 128MBx2 none none 512MB

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2.7 Level 2 Cache Memory/SRAM Memory

The S1686D's L2 Cache Memory is built into the Intel Pentium II CPU. There are no L2 Cache Memory slots or SRAM slots on the motherboard.

2.8 VRM (Voltage Regulator Module)

The CPU will program the VRM for the correct voltage needed. No jumper settings are required. The S1686D has two built-in VRMs on board.

2.9 Peripheral Device Installation

Install the motherboard after you have checked all of the jumper settings. Also be sure to check all connectors thoroughly and read the technical manuals that come with your peripheral cards before you install your addon peripheral cards.

If a PCI-Bus interface card is to be installed in the system, any one of the five PCI-Bus slots will support either a Master or a Slave device.

2.10 Connecting the Power Supply and On/Off Switch

The system is configured for a standard ATX power supply. The ATX connectors can only be plugged in one way and should install easily .

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Chapter 3: CPU Installation and Removal

Pentium II (233 through 300MHz) and Pentium Pro Processors (150 through 200 MHz) can be used on the S1686D. Please refer to section 2.3 for the correct CPU jumper settings. Although the S1686D motherboard is designed as a dual CPU system, it will also function with a single CPU.

The S1686D board provides two slots for Pentium II Processors--(Pentium II Primary and Secondary Slots). If only one CPU is used, the CPU should be plugged into the Primary Slot. However, when two CPUs are used, these CPUs should be of the same speed and type.

Caution!! The CPU is a sensitive electronic component which can be easily damaged by static electricity. Do not touch the CPU pins with your fingers.

3.1 Installation of Pentium II Boxed (Active) Processors

(Note: Active Processors are equipped with cooling fans. When installing an Active CPU, you also need to connect the cooling fan cable to its connector.)

Installing CPU Retention Modules

1. Installation of a Pentium II Active Processor requires a CPU Retention Module, which is first secured onto the motherboard. (Refer to the motherboard layout on Page 10.)

2. To attach the Retention Module, place the motherboard on a flat surface.

3. 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.)

Pentium II Slot Connector and Key Pin

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4. Drop the Retention Module down over the Pentium II Slot so that the Retention Module seats flat against the motherboard.

Tighten the screws in a clockwise manner to

secure the module to the board. (Warning- Do not overtighten the screws as you may damage the module and /or the motherboard.)

Retention Module

3.2 Installing CPUs

5. When the Retention Module is securely installed, you are ready to plug the CPU into the Retention Module. Make sure that the CPU's Cooling Fan is turned away from the I/O connectors before you plug the CPU into the CPU module.

6. Press firmly on the CPU until you hear a "click". The Pentium II CPU will make a clicking sound when it is fully locked into the Retention Module.

7. After the CPU is securely seated on the Retention Module in the Pentium II Slot, connect the CPU's Cooling Fan cable to the Cooling Fan Power Connector on the board.

3.3 Installing CPU Cooling Fans

8. Locate the Cooling Fan Connectors. (2 Connectors: J20 and J23--1 for each CPU.)

9. Plug the CPU's Cooling Fan cable into the CPU Fan Connector on the board. Make sure that the black wire of the cable is plugged into Pin 1 of the connector. (Refer to Pin 1 marked on the layout on P.10.) (Pin assignments: Pin 1: ground--black, Pin 2: 12V--Red, Pin 3: Signal-Y ellow .)

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3.4 Installation and Removal of Pentium II Passive Processors

(Unlike Active Processors, Passive Processors are not equipped with

cooling fans. Passive Processors are equipped

with heat sinks instead.)

Each CPU package should also contain the following:

CPU Retention Module (x1) Heat-sink Retention Bracket with mounting

Pentium II Passive CPU Module

locks (x1) Mounting Attach-mounts (x 2) Heat-sink Lock (x1)

3.4.1 Installing CPU Retention Modules

1. When installing the CPU Retention Module, make sure that you have the appropriate end of the module lined up with the key notch on the Pentium II Slot connector. This will ensure that the module is installed properly .

2. Before tightening the screws, make certain that the module is flush against the motherboard. If one end of the module is raised above the board, check the orientation of the module.

3. Install the module on the board by turning the screws in a clockwise direction. (Do not over tighten the screws).

Retention Module

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3.4.2 Installing Heat-sink Mounting Brackets

1. The heat-sink mount has two pins on the bottom and 4 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. A correctly installed bracket can be verified by noting the 4 pins on the top. These 4 pins should be closest to the Pentium II CPU slot.

2. 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 .

3. Lock the heat-sink mount to the board by inserting the two mounting locks into the pins of the heat-sink mounting bracket which are now below the motherboard. There will be a click when the locks are securely fastened.

3.4.3 Installing Pentium II Passive Processors

1. Align the CPU with the CPU retention module. Make sure the heat-sink is lined

Mounting Bracket & Locks

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 socket.

2. Slowly press down on the CPU module until the CPU locks into place. A clicking noise will be heard when the CPU is locked securely into the module.

3.4.4 Installing Heat-sink Locks

The heat-sink lock has 4 notches which will correspond to the 4 pins on the heat-sink mounting bracket. Gently slide the lock between the heatsink onto 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.

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Heat-Sink Lock

3.4.5 Removing Pentium II Passive Processors and CPU Retention Modules

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.

3.4.6: Removing Heat-Sink Locks

To remove the lock from the Retention Bracket, gently press the ends of the locks inward and pull.

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Chapter 4: Troubleshooting

4.1 Troubleshooting Procedures

Use the following procedures to troubleshoot your system. If you have followed all of the procedures below and still need assistance, refer to the "T echnical Support Procedures" and/or "Returning Merchandise for Service" section(s) in this chapter.

No-Video

If you do not have video, follow the Troubleshooting Flowchart on the next page.

1. Check for missing jumpers or improper installation of the ROM BIOS.

2. Make sure the video card and its jumper setting (as appropriate) match the monitor type.

3. Check to make sure that all peripheral cards are properly installed in their slots.

4. Check for incorrect cache memory jumper settings that may prevent accurate detection of memory.

5. The I/O Bus speed should be running at the standard speed of 8 MHz.

6. Use the speaker to determine if any beep codes exist. Refer to Addendum A and Addendum B for details about beep codes.

Note: If you are a system integrator, VAR, or OEM, a POST diagnostics car d is recommended for Port 80h codes. (Please visit our Web Site for detailed information.)

Memory Error/Parity Error

If you encounter memory or parity errors, follow the procedures below .

1. Check to determine if SIMM modules are improperly installed.

2. Make sure that different types of SIMMs have not been installed in the same bank. (eg. a mixture of 265KB x 9 and 1 MB x 9)

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3. Determine if different speeds of SIMMs have been installed in the

same or different banks, and the BIOS setup is configured for the slowest speed of RAM used. It is recommended to use the same RAM speed for SIMMs in different banks Finally, check for bad SIMM modules and Chips

T r oubleShooting Flowchart

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Losing the System's Setup Configuration

1. Make sure that you are using a high quality power supply. A poor quality power supply may cause the system to lose its CMOS setup.

2. Determine if the Dallas Battery is bad. If it is bad, replace it with a good one. (The following steps will help you determine if the RTC is bad: a. T urn on the system and set the system clock. b. Let the system run for more than 6 hours. c. Check the system clock to see if it has accurate timing. If the system timing is off, it is very possible that the R TC battery is bad.)

3. If the above steps do not fix the Setup Configuration problem, contact your vendor for repair.

4.2 Technical Support Procedures

Be sure to go through the "Troubleshooting Procedures" section in this Chapter, and visit our W eb site for additional information before calling Technical Support. (T yan's Web Site address is: http://www.tyan.com.)

If the problem is still not resolved, have the following information ready before you call for technical support:

1. System Board Serial Number

2. CPU Serial Number

3. Invoice Number, Date

4. Purchase Form

5. Sale's Person's name

6. Product Configurations

4.3 Returning Merchandise for Service

A receipt or a copy of your invoice marked with the date of purchase is required before any warranty service will 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 mailed prepaid, or hand-carried to the manufacturer. Shipping and handling charges will be applied for all orders that must be mailed when service is complete. During the warranty period, contact your distributor first for any product problems.

This warranty only covers normal consumer use and does not cover damages incurred in shipping or from failure due to the alteration, misuse, abuse, or improper maintenance of products.

27S1686D-001-01

Appendix: LM78 System Hardware Monitor and LANDesk Client Manager (LDCM)

To enhance the performance of your computer system, Tyan has incorporated National Semiconductor's LM78 Microprocessor System Hardware Monitor and LANDesk Client Manager (LDCM) into the S1686D board design. The LM78 is an Integrated Data Acquisition system, designed to monitor power supply voltages, temperatures, and fan speeds.

T o achieve this purpose, the LM78, a hardware monitor component, has an on-chip temperature sensor, 5 positive analog inputs, two inverting inputs and an 8-bit ADC. In addition, the LM78 also provides ISA and Serial Bus Interfaces. A 32-byte auto-increment RAM is provided for POST (Power On Self Test) code storage.

Features

The LM78 includes the following features:

* Temperature sensoring * 5 positive voltage inputs * 2 op amps for negative voltage monitoring * 3 fan speed monitoring inputs * Input for additional temperature sensors * Chassis Intrusion Detector Input

The software program-- LDCM (LANDesk Client Manager) is used as the LM78's drivers to accomplish monitoring computers' temperatures and voltages. The LDCM Drivers use the LM78 to monitor critical hardware components and enable remote sensing and diagnostics of the system Board. Thus, by implementing both National Semiconductor's LM78 and LDCM in the S1682D system, T yan provides you with the best quality board possible on the market.

For more information, please refer to the Web Page.

28S1686D-001-01 http://www.tyan.com

Compliance Information Statement

( Declaration of Conformity Procedure-DOC)

Notice for the USA

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:

w Reorient or relocate the receiving antenna. w Increase the separation between the equipment and receiver. w Connect the equipment into an outlet on a circuit different from that of the

receiver connected. w Consult the dealer or an experienced radio/TV 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 spec' cifie' par le Ministe're Canadien des Communications dans les re'glements d'interfe'rence radio.

Notice for Europe (CE Mark)

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

Acknowledgment

Information presented in this publication has been carefully checked for reliability; however, no responsibility is assumed for inaccuracies. The information contained in this document is subject to change without notice.

Trademarks

A ward BIOS/Flash are trademarks of A ward Software International Inc. AMI BIOS is a trademarks of American Megatrends Inc. IBM,PC,A T ,PS/2 are esiademarks of IBM Corporation

INTEL,Pentium are esiademarks of Intel Corporation.

29S1686D-001-01

Tyan Pentium II Motherboards

Addendum A

AMI BIOS CMOS Setup

User’s Guide

for

Intel 440FX Series PCIset

Based on the 7/15/95 V6.26 Core AMIBIOS.

Use with AMIBCP Version 6

Trademarks

Intel , Pentium II, and Pentium are registered trademarks of Intel Corporation. MS-DOS and Microsoft are registered trademarks of Microsoft Corporation. Microsoft Windows, Windows 95, and Windows NT are trademarks of Microsoft Corporation. Weitek is a registered trademark of Weitek Corporation. IBM, AT, VGA, PS/2, OS/2, and EGA are registered trademarks of International Business Machines Corporation. XT and CGA are trademarks of International Business Machines Corporation.

Revision History

4/3/97 Initial release.

-----------------------------------------------------------------------------------------------------------------------------------------------Pentium II Motherboards AMI BIOS Setup -Page 2-

Table of Contents

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

2 Standard Setup........................................................7

3 Advanced Setup....................................................10

4 Chipset Setup........................................................16

5 Power Management Setup....................................21

6 PCI/PnP Setup .......................................................25

7 Peripheral Setup....................................................28

8 A Few Words on Flash BIOS Upgrades...............31

-----------------------------------------------------------------------------------------------------------------------------------------------Pentium II Motherboards AMI BIOS Setup -Page 3-

1 Introduction

This manual documents the setup requirements of the AMI BIOS for Tyan’s PentiumII motherboards, which supports Intel’s Pentium II and Pentium Pro Processors. This system configuration information is stored in the battery-backed RAM and is retained even if the power of your system is turned off. The AMI BIOS Setup Utility can also be accessed by the user during the Power-On -Self-Test (POST).

The AMI BIOS supports the following:

1. Plug and Play (v. 1.0A) and ESCD (Extended System Configuration Data)

2. EPA Green PC (v. 1.03)

3. APM (Advanced Power Management v.1) via SMI (System Management Interrupt)

4. PCI Bus

5. DRAM, EDO, FPM, ECC

6. Flash ROM

How Data Is Configured

AMIBIOS provides a Setup utility in the CMOS RAM and can be accessed by pressing <Del> at the appropriate time during system boot. The Setup utility configures data in the CMOS RAM.

-----------------------------------------------------------------------------------------------------------------------------------------------Pentium II Motherboards AMI BIOS Setup -Page 4-

Types of AMIBIOS Setup

Types of

Setup

Standard Sets time, date, hard disk type, types of floppy

drives, monitor type, and if keyboard is installed.

Advanced Sets Typematic Rate and Delay, Above 1 MB

Memory Test, Memory Test Tick Sound, Hit <Del> Message Display, System Boot Up Sequence, and many others.

Chipset Sets chipset-specific options and features.

Power

Management

PCI/PnP Sets options related to the PCI bus and Plug and

Peripheral Controls I/O Controller-related options.

Controls power conservation options.

Play options.

Description

-----------------------------------------------------------------------------------------------------------------------------------------------Pentium II Motherboards AMI BIOS Setup -Page 5-

AMI BIOS Main Menu

The following screen represents the Main Menu of BIOS Setup types:

AMI BIOS Setup

Setup Security

Standard Advanced Chipset Supervisor User

PowerMgmt PCI/PnP Peripheral Anti-Virus

Utility Default

Detect IDE Language Original Optimal Fail-safe

Alt+H:Help

-----------------------------------------------------------------------------------------------------------------------------------------------Pentium II Motherboards AMI BIOS Setup -Page 6-

2 Standard Setup

Select the AMIBIOS Setup options by choosing Standard Setup from the AMIBIOS Setup main menu. Standard Setup options are described below.

Floppy Drive A: and B: Move the cursor to these fields via ↑ and ↓ and select the floppy type. The

settings are 360 KB 5¼ inch, 1.2 MB 5¼ inch, 720 KB 3½ inch, 1.44 MB 3½ inch, or

2.88 MB 3½ inch.

Primary Master Primary Slave Secondary Master Secondary Slave Select these options to configure the drive named in the option. Select Auto Detect IDE

to let AMIBIOS automatically configure the drive. A screen with a list of drive parameters appears. Click on OK to configure the drive.

Type How to Configure

SCSI

IDE

CD-ROM

Standard

MFM

Non-

Standard

MFM

Select Type. Select Not Installed from the drive parameter screen. The SCSI drivers provided by the SCSI manufacturer should allow you to configure the SCSI drive. Select Type. Select Auto to let AMIBIOS determine the parameters. Click on OK when AMIBIOS displays the drive parameters. Select LBA Mode. Select On if the drive has a capacity greater than 540 MB. Select Block Mode. Select On to allow block mode data transfers. Select 32-Bit Mode. Select On to allow 32-bit data transfers. Select the PIO Mode. It is best to select Auto to allow AMIBIOS to determine the PIO mode. If you select a PIO mode that is not supported by the IDE drive, the drive will not work properly. If you are absolutely certain that you know the drive’s PIO mode, select PIO mode 0 - 5, as appropriate. *The default

setting for this item is “4”.

Select Type. Select CDROM. Click on OK when AMIBIOS displays the drive parameters. Select Type. You must know the drive parameters. Select the drive type that exactly matches your drive’s parameters. Select Type. If the drive parameters do not match the drive parameters listed for drive types 1 - 46, select User and enter the correct hard disk drive parameters.

-----------------------------------------------------------------------------------------------------------------------------------------------Pentium II Motherboards AMI BIOS Setup -Page 7-

Standard Setup, Continued

Entering Drive Parameters You can also enter the hard disk drive parameters. The drive parameters are:

Parameter Description

Type The number for a drive with certain identification

parameters.

Cylinders The number of cylinders in the disk drive.

Heads The number of heads.

Write

Precompensation

Landing Zone This number is the cylinder location where the heads

Sectors The number of sectors per track. MFM drives have 17

Capacity The formatted capacity of the drive is the number of

The actual physical size of a sector gets progressively smaller as the track diameter diminishes. Yet each sector must still hold 512 bytes. Write precompensation circuitry on the hard disk compensates for the physical difference in sector size by boosting the write current for sectors on inner tracks. This parameter is the track number on the disk surface where write precompensation begins.

normally park when the system is shut down.

sectors per track. RLL drives have 26 sectors per track. ESDI drives have 34 sectors per track. SCSI and IDE drives have even more sectors per track.

heads times the number of cylinders times the number of sectors per track times 512 (bytes per sector).

Cont’d

-----------------------------------------------------------------------------------------------------------------------------------------------Pentium II Motherboards AMI BIOS Setup -Page 8-

Standard Setup, Continued

Hard Disk Drive Types

Type Cylinders Heads Write

1 306 4 128 305 17 10 MB 2 615 4 300 615 17 20 MB 3 615 6 300 615 17 31 MB 4 940 8 512 940 17 62 MB 5 940 6 512 940 17 47 MB 6 615 4 65535 615 17 20 MB 7 462 8 256 511 17 31 MB 8 733 5 65535 733 17 30 MB 9 900 15 65535 901 17 112 MB 10 820 3 65535 820 17 20 MB 11 855 5 65535 855 17 35 MB 12 855 7 65535 855 17 50 MB 13 306 8 128 319 17 20 MB 14 733 7 65535 733 17 43 MB 16 612 4 0 663 17 20 MB 17 977 5 300 977 17 41 MB 18 977 7 65535 977 17 57 MB 19 1024 7 512 1023 17 60 MB 20 733 5 300 732 17 30 MB 21 733 7 300 732 17 43 MB 22 733 5 300 733 17 30 MB 23 306 4 0 336 17 10 MB 24 925 7 0 925 17 54 MB 25 925 9 65535 925 17 69 MB 26 754 7 754 754 17 44 MB 27 754 11 65535 754 17 69 MB 28 699 7 256 699 17 41 MB 29 823 10 65535 823 17 68 MB 30 918 7 918 918 17 53 MB 31 1024 11 65535 1024 17 94 MB 32 1024 15 65535 1024 17 128 MB 33 1024 5 1024 1024 17 43 MB 34 612 2 128 612 17 10 MB 35 1024 9 65535 1024 17 77 MB 36 1024 8 512 1024 17 68 MB 37 615 8 128 615 17 41 MB 38 987 3 987 987 17 25 MB 39 987 7 987 987 17 57 MB 40 820 6 820 820 17 41 MB 41 977 5 977 977 17 41 MB

511 981 5 981 981 17 41 MB

43 830 7 512 830 17 48 MB 44 830 10 65535 830 17 69 MB 45 917 15 65535 918 17 114 MB 46 1224 15 65535 1223 17 152 MB

Precompensation

Landing

Zone

Sectors Capacity

-----------------------------------------------------------------------------------------------------------------------------------------------Pentium II Motherboards AMI BIOS Setup -Page 9-

3 Advanced Setup

The Advanced Setup settings, designed for the Intel 440FX chipset, are described in this chapter. Select Advanced Setup from the AMIBIOS Setup main menu to display the Advanced Setup options.

Default Settings

Every option in AMIBIOS Setup contains three sets of values: Fail-Safe, Original, and Optimal Default settings. Do not change any default values set by your manufacturer, unless you thoroughly understand the functions of the items you are changing.

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.

Original Defaults This option allows the user to restore the original defaults and allows the user to use

the last-saved values as new default values.

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Pentium II Motherboards AMI BIOS Setup -Page 10-

Advanced Setup

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:

Setting Description

Disabled

Enabled

The Optimal default setting is Enabled and the Fail-Safe default setting is Disabled.

AMIBIOS test all system memory. AMIBIOS waits up to 40 seconds for a READY signal from the IDE hard disk drive. AMIBIOS waits for .5 seconds after sending a RESET signal to the IDE drive to allow the IDE drive time to get ready again. AMIBIOS checks for a <Del> key press and runs AMIBIOS Setup if the key has been pressed. AMIBIOS does not test system memory above 1 MB.

AMIBIOS does not wait up to 40 seconds for a READY signal from the IDE hard disk drive. If a READY signal is not received immediately from the IDE drive, AMIBIOS does not configure that drive. AMIBIOS does not wait for .5 seconds after sending a RESET signal to the IDE drive to allow the IDE drive time to get ready again.

You cannot run AMIBIOS Setup at system boot, because there is no delay for the Hit <Del> to run Setup message.

1st Boot Device This option sets the type of device for the first boot drives that the AMIBIOS attempts to

boot from after AMIBIOS POST completes. The settings are Disabled, Floptical,

Floppy, SCSI, IDE-0, IDE-1, IDE-2, IDE-3 or CDROM The Optimal and Fail-Safe default settings are Floppy.

2nd Boot Device This option sets the type of device for the second boot drives that the AMIBIOS attempts

to boot from after AMIBIOS POST completes. The settings are Disabled, Floppy, Floptical, IDE-0 or CDROM. The Optimal and Fail-Safe default settings are IDE-0.

Cont’d

------------------------------------------------------------------------------------------------------------------------------------------------

Pentium II Motherboards AMI BIOS Setup -Page 11-

Advanced Setup, Continued

3rd Boot Device This option sets the type of device for the third boot drives that the AMIBIOS attempts

to boot from after AMIBIOS POST completes. The settings are Disabled, CD-ROM,

Floppy, Floptical, or IDE-0. The Optimal and Fail-Safe default settings are CDROM.

4th Boot Device This option sets the type of device for the fourth boot drives that the AMIBIOS attempts

to boot from after AMIBIOS POST completes. The settings are Disabled, CD-ROM,

IDE-0, Floptical, or Floppy. The Optimal and Fail-Safe default settings are Disabled.

S.M.A.R.T. For Hard Disks Set this option to Enabled to permit AMIBIOS to use the SMART (System

Management and Reporting Technologies) protocol for reporting server system information over a network. The settings are Enabled or Disabled. The Optimal and

Fail-Safe default settings are Disabled.

Cont’d

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Pentium II Motherboards AMI BIOS Setup -Page 12-

Advanced Setup, Continued

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. The default settings are On.

Floppy Drive Swap Set this option to Enabled to permit drives A: and B: to be swapped. The settings are

Enabled or Disabled. The default settings are Disabled.

PS/2 Mouse Support Set this option to Enabled to enable AMIBIOS support for a PS/2-type mouse. Pins

2-3 of the PS/2 Mouse Selector jumper on the motherboard must be shorted together to enable PS/2 mouse support. The settings are Enabled or Disabled. The Optimal and

Fail-Safe default settings are Enabled.

Cont’d

------------------------------------------------------------------------------------------------------------------------------------------------

Pentium II Motherboards AMI BIOS Setup -Page 13-

Advanced Setup, Continued

Primary Display This option configures the type of monitor attached to the computer. The settings are

Mono, CGA40x25, CGA80x25, VGA/EGA, or Absent. The Optimal and Fail-Safe default settings are VGA/EGA.

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. See the Advanced Setup chapter for instructions on changing a password. The

Optimal and Fail-Safe defaults are Setup.

Boot To OS/2 Set this option to Yes if running the OS/2 operating system and using more than 64 MB

of system memory on the motherboard. The settings are Yes or No. The Optimal and Fail-Safe default settings are No.

CPU Microcode Update Set this option to Enabled to permit the CPU to be updated online at any time.

The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are

Enabled.

Internal Cache This option sets the type of caching algorithm used by the L1 internal cache memory on

the CPU. The settings are WriteBack, WriteThru, or Disabled. The Optimal and the

Fail-Safe default settings are 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 always copied from the BIOS ROM to system RAM for faster execution. The settings are Enabled or Disabled. The Optimal and the Fail-Safe default settings are Enabled.

------------------------------------------------------------------------------------------------------------------------------------------------

Pentium II Motherboards AMI BIOS Setup -Page 14-

Advanced Setup, Continued

C000,16K Shadow C400,16K Shadow These options specify how the 32 KB of video ROM at C0000h is treated. The settings

are:

Setting Description

Disabled

Enabled

Cached

The Optimal and the Fail-Safe default settings are Cached.

C800,16K Shadow CC00,16K Shadow D000,16K Shadow D400,16K Shadow D800, 16K Shadow DC00,16K Shadow These options enable shadowing of the contents of the ROM area named in the

option. The ROM area not used by ISA adapter cards is allocated to PCI adapter cards. The settings are:

The contents of the video ROM are not copied to RAM. The contents of the video ROM area from C0000h - C7FFFh

are copied (shadowed) from ROM to RAM for faster execution.

The contents of the video ROM area from C0000h - C7FFFh are copied from ROM to RAM and can be written to or read from cache memory.

Setting Description

Disabled

Cached

Enabled

The contents of the video ROM are not copied to RAM. The contents of the video ROM area from C0000h - C7FFFh

are copied from ROM to RAM and can be written to or read from cache memory.

The contents of the video ROM area from C0000h - C7FFFh are copied (shadowed) from ROM to RAM for faster execution.

The Optimal and Fail-Safe default settings are Disabled.

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Pentium II Motherboards AMI BIOS Setup -Page 15-

4 Chipset Setup

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

DRAM Speed (ns) This option specifies the RAS Access Time in nanoseconds for the EDO DRAM

system memory installed in this computer. The settings are 50, 60, or 70. The Optimal

default is 60 and the Fail-Safe default is 70.

Cont’d

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Pentium II Motherboards AMI BIOS Setup -Page 16-

Chipset Setup, Continued

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

Setting Description

Disabled No error checking or error reporting is done. The Fail-Safe

default is Disabled.

Parity

ECC

Multibit errors are detected and reported as parity errors. Single-bit errors are corrected by the chipset. Corrected bits of data from memory are not written back to DRAM system memory. Multibit errors are detected and reported as parity errors. Single-bit errors are corrected by the chipset and are written back to DRAM system memory. If a soft (correctable) memory error occurs, writing the fixed data back to DRAM system memory will resolve the problem. Most DRAM errors are soft errors. If a hard (uncorrectable) error occurs, writing the fixed data back to DRAM system memory does not solve the problem. In this case, the second time the error occurs in the same location, a Parity Error is reported, indicating an uncorrectable error. If ECCI is selected, AMIBIOS automatically enables the System Management Interface (SMI) is enabled. If you do not want to enable power management, set the Power Management/APM option to Disabled and set all Power Management Setup timeout options to Disabled. To enable power management, set Power Management /APM to Enabled and set the power management timeout options as desired. The Optimal default is ECC.

Cont’d

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Pentium II Motherboards AMI BIOS Setup -Page 17-

Chipset Setup, Continued

DRAM Fast Leadoff Set this option to Enabled to enable the system memory fast leadoff feature. The

settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are

Disabled.

DRAM Refresh Type This option sets the type of system memory refresh. The settings are RAS Only or

CAS/RAS. The Optimal and Fail-Safe default settings are CAS/RAS Only.

DRAM Refresh Queue Set this option to Enabled to enable the DRAM refresh queue. The settings are

Enabled or Disabled. The Optimal and Fail-Safe default settings are Enabled.

VGA Frame Buffer USWC Set this option to Enabled to enable the VGA video frame buffer using

USWC (Uncacheable, Speculatable, Write-Combined) memory. The settings are Enabled or Disabled. Older ISA VGA card drivers may not behave correctly if this option is not set to Disabled. The Optimal and Fail-Safe default settings are

Disabled.

PCI Frame Buffer USWC Set this option to Enabled to enable the USWC memory attribute and improve

video performance when a PCI video adapter is installed. However, VGA card drivers may not behave correctly when this option is set to Enabled. The settings are Disabled or Enabled. The Optimal and Fail-Safe defaults are Disabled.

------------------------------------------------------------------------------------------------------------------------------------------------

Pentium II Motherboards AMI BIOS Setup -Page 18-

Chipset Setup, Continued

Fixed Memory Hole This option specifies the location of an area of memory that cannot be addressed on

the ISA bus. The settings are Disabled, 15 MB-16 MB, or 512KB-640KB. The Optimal and Fail-Safe default settings are Disabled.

CPU To IDE Posting Set this option to Enabled to allow the CPU to post writes from the CPU to the

IDE controller. The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are Enabled.

USWC Write Posting Set this option to Enabled to allow write operations from USWC memory to be

posted. The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are Disabled.

CPU To PCI Posting Set this option to Enabled to allow write operations from the CPU to be posted to

the PCI bus. The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are Enabled.

PCI To DRAM Pipeline Set this option to Enabled to enable the pipeline from the PCI bus to DRAM

system memory. The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are Enabled.

PCI Burst Write Combine Set this option to Enabled to enable PCI bus burst write operations to be

combined. The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are Enabled.

Read Around Write Set this option to Enabled to enable readaround write operations. The settings are

Enabled or Disabled. The Optimal and Fail-Safe default settings are Enabled.

------------------------------------------------------------------------------------------------------------------------------------------------

Pentium II Motherboards AMI BIOS Setup -Page 19-

Chipset Setup, Continued

Deturbo Mode Set this option to Enabled to enable deturbo mode. The settings are Enabled or

Disabled. The Optimal and Fail-Safe default settings are Disabled.

TypeF DMA BufferControl1 TypeF DMA Buffer Control2 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. The Optimal and Fail-Safe default settings are

Disabled.

Power InterruptSet this option to Enabled to activate the function of Power Interruption. When

“Enabled”, the power of the system will be automatically turned on after a power interruption (outage). The user does not need to hit the Power-on switch on the case to turn on the power. The settings are Enabled or Disabled. The Optimal and Fail-Safe

default settings are Disabled.

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

are Enabled or Disabled. The Optimal and Fail-Safe default settings are Enabled.

USB Keyboard/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. The Optimal and Fail-Safe defaults are Disabled.

USB Passive Release Enable Set this option to Enabled to enable passive release for USB. The settings

are Enabled or Disabled. The Optimal and Fail-Safe default are Disabled.

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Pentium II Motherboards AMI BIOS Setup -Page 20-

5 Power Management Setup

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

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. The

Fail-Safe default setting is Disabled and the Optimal Setting is Enabled. Note: Do not set the default setting of this item-“Power Management/APM” to “Enabled”, unless you fully understand the function of each item listed below..

Instant On Timeout (Minute) This option specifies the length of a period of hard disk drive inactivity.

When this length of time expires, the computer enters a power-conserving state. The settings are Disabled, 1 min. (minute), 2 min, 3 min., 4 min., 5 min., 6 min, 7 min., 8

min., 9 min., 10 min., 11 min., 12 min., 13 min., 14 min, or 15 min. The Optimal and Fail-Safe default settings are Disabled.

Green PC Monitor Power State This option specifies the power state that the green PC-compliant video

monitor enters when AMIBIOS places it in a power saving state after the specified period of display inactivity has expired. The settings are Off, Standby, Suspend, or

Disabled. The Optimal default is Standby, and Fail-Safe default settings are Disabled.

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 Standby, Suspend or Disabled. The Optimal and Fail-

Safe default settings are Disabled.

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Pentium II Motherboards AMI BIOS Setup -Page 21-

Power Management Setup, Continued

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, Standby, or Suspend. The Optimal and Fail-Safe default settings are

Disabled.

Hard Disk Timeout (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 the previous page). The settings are

Disabled, 1 min. (minute), 2 min, 3 min., 4 min., 5 min., 6 min, 7 min., 8 min., 9 min., 10 min., 11 min., 12 min., 13 min., 14 min, and 15 min. The Optimal and Fail-Safe

default settings are Disabled.

Standby Timeout(Minute) This option specifies the length of a period of system inactivity while in Full

power on state. When this length of time expires, the computer enters Standby power state. The settings are Disabled, 4 msec, 8 msec, 12 msec, 16 msec, up to 508 msec, in

increments of 4 msec. The Optimal and Fail-Safe default settings are Disabled.

Suspend Timeout Minute This option specifies the length of a period of system inactivity while in

Standby state. When this length of time expires, the computer enters Suspend power state. The settings are Disabled, 4 msec, 8 msec, 12 msec, 16 msec, up to 508 msec, in

increments of 4 msec. The Optimal and Fail-Safe default settings are Disabled.

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Pentium II Motherboards AMI BIOS Setup -Page 22-

Power Management Setup, Continued

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 between the normal CPU clock speed and the CPU clock speed when the computer is in the power-conserving state. The settings are 1:1, 1:2, 1:4, 1:8, 1:16, 1:32, 1:64, or 1:128. The Optimal and

Fail-Safe default settings are 1:8.

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, AMIBIOS watches for display activity. The computer enters the Full On state if any activity occurs. AMIBIOS reloads the Standby and Suspend timeout timers if display activity occurs. The settings are

Monitor or Ignore. The Optimal and Fail-Safe default settings are Ignore.

IRQ3 IRQ4 IRQ5 IRQ7 IRQ9 IRQ10 IRQ11 IRQ12 IRQ13 IRQ14 IRQ15

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, AMIBIOS watches for activity on the specified IRQ line. The computer enters the Full On state if any activity occurs. AMIBIOS reloads the Standby and Suspend timeout timers if activity occurs on the specified IRQ line.

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Pentium II Motherboards AMI BIOS Setup -Page 23-

Power Management Setup, Continued

The Optimal defaults for IRQ12 and IRQ 14 are Monitor, and the Optimal defaults for the rest of IRQs are Ignore.

However, the Fail-Safe defaults for all of the IRQs listed above are Ignore.

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Pentium II Motherboards AMI BIOS Setup -Page 24-

6 PCI/PnP Setup

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

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. The Optimal and Fail-

Safe default settings are No.

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. The Optimal and Fail-Safe default settings are 64.

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:

VGA Palette

Snoop Bit

Disabled

Enabled

Data read and written by the CPU is only directed to the PCI VGA device's palette registers. Data read and written by the CPU is directed to the both the PCI VGA device's palette registers and the ISA VGA device palette registers, permitting the palette registers of both devices to be identical.

Action

This option must be set to Enabled if any ISA adapter card installed in the system requires VGA palette snooping. The Optimal and Fail-Safe default settings are

Disabled.

Cont’d

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Pentium II Motherboards AMI BIOS Setup -Page 25-

PCI/PnP Setup, Continued

PCI IDE Bus Master 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. The Optimal and Fail-Safe

default settings are Disabled.

Offboard PCI IDE Card This option specifies if an offboard PCI IDE controller adapter card is used in

the computer. You must also specify the PCI expansion slot on the motherboard where the offboard PCI IDE controller card is installed. If an offboard PCI IDE controller is used, the motherboard onboard IDE controller is automatically disabled. The settings are Disabled, Auto, Slot1, Slot2, Slot3, Slot4, Slot5, or Slot6. If Auto is selected, AMIBIOS automatically determines the correct setting. The Optimal and Fail-Safe default settings are Auto. This option forces IRQ 14 and 15 to a PCI slot on the PCI local bus. This is necessary to support non-compliant PCI IDE adapter cards.

DMA Channel 0 DMA Channel 1 DMA Channel 3 DMA Channel 5 DMA Channel 6 DMA Channel 7These options allow you to specify the bus type used by each DMA channel. The settings

are PnP or ISA/EISA . The Optimal and Fail-Safe default settings are PnP.

IRQ3 IRQ4 IRQ5 IRQ7 IRQ9 IRQ10 IRQ11 IRQ12 IRQ14 IRQ15 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

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Pentium II Motherboards AMI BIOS Setup -Page 26-

PCI/PnP Setup, Continued

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, the end user 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. The Optimal

and Fail-Safe default settings are 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. The Optimal and FailSafe default settings are Disabled.

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. The

Optimal default setting is Disabled and the Fail-Safe default setting is N/A.

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Pentium II Motherboards AMI BIOS Setup -Page 27-

7 Peripheral Setup

Peripheral Setup options are displayed by choosing Peripheral Setup from the AMIBIOS Setup main

menu. All Peripheral Setup options are described here.

Onboard FDC Set this option to Enabled to enable the floppy drive controller on the motherboard. The

settings are Auto (AMIBIOS automatically determines if the floppy controller should be

enabled), Enabled, or Disabled. The Optimal and Fail-Safe default settings are Auto.

Onboard Serial Port1 This option specifies the base I/O port address of serial port 1. The settings are

Auto (AMIBIOS automatically determines the correct base I/O port address), Disabled, 3F8h, 2F8h, 2E8h, or 3E8h. The Optimal and Fail-Safe default settings are Auto.

Onboard Serial Port2 This option specifies the base I/O port address of serial port 2. The settings are

Auto (AMIBIOS automatically determines the correct base I/O port address), Disabled, 3F8h, 2F8h, 2E8h, or 3E8h. The Optimal Fail-Safe default settings are Auto.

Serial Port2 Mode This option specifies the operating mode for serial port 2.This option only appears if

the Onboard Serial Port2 option is not set to Disabled. The settings are IrDA (Infrared

Dealer’s Association protocol), ASK IR (Ask Computer Company infrared protocol), or Standard. The Optimal and Fail-Safe default settings are Standard.

Cont’d

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Pentium II Motherboards AMI BIOS Setup -Page 28-

Peripheral Setup, Continued

Onboard Parallel Port This option specifies the base I/O port address of the parallel port on the

motherboard. The settings are Disabled, Auto (AMIBIOS automatically determines the correct setting, 378h, 278h, or 3BCh. The Optimal and Fail-Safe default settings are

Auto.

Parallel Port Mode This option specifies the parallel port mode. The Optimal and Fail-Safe default

settings are Normal. The settings are:

Setting Description

Normal EPP

ECP

The normal parallel port mode is used. The parallel port can be used with devices that adhere to the Enhanced Parallel Port (EPP) specification. EPP uses the existing parallel port signals to provide asymmetric bidirectional data transfer driven by the host device. The parallel port can be used with devices that adhere to the Extended Capabilities Port (ECP) specification. ECP uses the DMA protocol to achieve data transfer rates up to 2.5 Megabits per second. ECP provides symmetric bidirectional communication.

Cont’d

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Pentium II Motherboards AMI BIOS Setup -Page 29-

Peripheral Setup, Continued

Onboard IDE This option specifies the IDE channel used by the onboard IDE controller. The settings

are Disabled, Primary, Secondary, or Both. The Optimal and Fail-Safe default

settings are Both.

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Pentium II Motherboards AMI BIOS Setup -Page 30-

A Few Words On Flash BIOS Upgrades

Tyan makes no warranties to the usability of a BIOS on our WWW, FTP, or BBS areas. BIOS’s are made available to the public on an "as-is" basis. Upgrading a BIOS without knowing the implications may cause serious adverse effects. Please do not upgrade a BIOS unless directed to do so by a qualified support technician. Tyan is not able to replace mis-used or damaged BIOS chips in the event of a BIOS flash failure.

For more information about BIOS Flash procedures, BIOS replacements, or BIOS settings, please refer to the online documentation located on Tyan's Homepage at the following address:

http://www.tyan.com/html/faq.html

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Pentium II Motherboards AMI BIOS Setup -Page 31-

Intergraph S1686D User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual