DFI 586ITBD User manual

586ITBD
Rev. BO0+
System Board
Users Manual
34220829

Copyright
This publication contains the information that is protected by copyright.
No part of it may be reproduced in any form or by any means or
used to make any transformation/adaptation without the prior written
permission from the copyright holders.
This publication is provided for informational purposes only. The
manufacturer makes no representations or warranties with respect to
the contents or use of this manual and specifically disclaims any express
or implied warranties of merchantability or fitness for any particular
purpose.The user will assume the entire risk of the use or the results
of the use of this document. Further, the manufacturer reserves the
right to revise this publication and make changes to its contents at any
time, without obligation to notify any person or entity of such revisions
or changes.
All Rights Reserved. © 1998
Trademarks
Microsoft®MS-DOS®, WindowsTM and Windows®95 are registered
trademarks of Microsoft Corporation. Intel and Pentium are registered
trademarks of Intel Corporation. Cyrix, 6x86, 6x86L and 6x86MX
are registered trademarks of Cyrix Corporation. AMD, K5 and K6
are registered trademarks of Advanced Micro Devices, Inc. IBM is a
registered trademark of International Business Machine Corporation.
Award is a registered trademark of Award Software, Inc. Other
trademarks and registered trademarks of products appearing in this
manual are the properties of their respective holders.
Caution:
Danger of explosion if battery incorrectly replaced.
Replace only with the same or equivalent type recommended by the
manufacturer.
Dispose of used batteries according to the battery manufacturers
instructions.

FCC and DOC Statement on Class B
This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15 of the FCC
rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a
residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful
interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation.
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 to correct
the interference by one or more of the following measures:
 Reorient or relocate the receiving antenna.
 Increase the separation between the equipment and the
receiver.
 Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
 Consult the dealer or an experienced radio TV technician for
help.
Notice:
1. The changes or modifications not expressly approved by the
party responsible for compliance could void the user's
authority to operate the equipment.
2. Shielded interface cables must be used in order to comply
with the emission limits.

Table of Contents
Chapter 1 - Introduction
Features and Specifications.............................................................................
Package Checklist..................................................................................................
7
14
Chapter 3 - Award BIOS Setup Utility
The Basic Input/Output System..................................................................
Standard CMOS Setup.....................................................................................
BIOS Features Setup..........................................................................................
Chipset Features Setup.....................................................................................
Power Management Setup..............................................................................
PNP/PCI Configuration.....................................................................................
Load Fail-Safe Settings........................................................................................
Load Optimal Settings.......................................................................................
Integrated Peripherals........................................................................................
Supervisor Password..........................................................................................
User Password.......................................................................................................
48
48
52
56
57
62
64
64
65
68
68
Chapter 2 - Hardware Installation
Preparing the Area...............................................................................................
Handling the System Board............................................................................
Installing the System Board.............................................................................
Board Layout...........................................................................................................
System Memory.....................................................................................................
Cache Memory.......................................................................................................
Processor Upgrade Information..................................................................
Jumper Settings for Intel Processors................................................
Jumper Settings for Cyrix/IBM Processors...................................
Jumper Settings for AMD Processors..............................................
Installing Upgrade Processors...............................................................
Jumper Settings for CMOS Clear...............................................................
Jumper Settings for Modem Ring-on........................................................
Ports and Connectors.......................................................................................
Expansion Slots.......................................................................................................
16
16
17
19
20
25
25
26
27
28
29
33
33
35
46

Appendix A - DIM and SIM Modules
Types of Modules................................................................................................. 77
Appendix B - Memory and I/O Maps
Memory Address Map......................................................................................
I/O Address Map.................................................................................................
80
80
Appendix C - System Error Report
POST Beep..............................................................................................................
Error Messages.......................................................................................................
83
83
Appendix D - Troubleshooting
Troubleshooting Checklist................................................................................ 86
IDE HDD Auto Detection..............................................................................
Save & Exit Setup.................................................................................................
Exit Without Saving.............................................................................................
69
70
70
Chapter 4 - Supported Softwares
Desktop Management Interface..................................................................
Drivers........................................................................................................................
72
75

1
Introduction
CHAPTER

1
Introduction
7
Features and Specifications
Processor Upgrade
The system board is equipped with a 321-pin ZIF socket (Intel

Socket 7). This socket is designed for easy removal of an old
processor and easy insertion of an upgrade processor. The system
board is also equipped with a switching voltage regulator that
supports 2.0V, 2.2V, 2.8V, 2.9V, 3.2V, 3.3V and 3.5V core voltage for
various processors.
 Intel Pentium

processor with MMXTM technology-166/200/
233MHz
 Intel Pentium

90/100/120/133/150/166/200MHz
 Cyrix

6x86L PR150+/PR166+ and 6x86MX-PR166/PR200/
PR233, M II-300
 AMD

K5 PR90/PR100/PR120/PR133/PR166
 AMD

K6-166, K6-200, K6-233, K6-266, K6-300 and K6-2/266
Chipset
 Intel

82430TX PCIset chipset
System Memory
The system board supports 8MB to 256MB of memory. It is
equipped with two DIMM and four SIMM sockets. The 168-pin
DIMM sockets use x64 EDO (60/70ns), fast page mode (60/
70ns), or SDRAM (10/12/13ns), 3.3V. The 72-pin SIMM sockets
use EDO or fast page mode, 60/70ns, x32 DRAM, 5V.
Cache Memory
 512KB pipeline burst, direct map write-back cache installed on
the system board.
BIOS
 Award BIOS, Windows

95 Plug and Play compatible
 Flash EPROM for easy BIOS upgrades
 Supports DMI function

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Energy Efficient Design
 System power management supported
 CPU stopped clock control
 Hardware supports SMI green mode
 Microsoft®/Intel®APM 1.2 compliant
 Soft Power supported - ACPI v1.0a specification (ATX power
supply only)
ACPI Specification and OS Directed Power
Management (ATX power supply only)
The system board is designed to meet the ACPI (Advanced
Configuration Power Interface) specification. It has energy saving
features which enable operating systems to reliably manage and
coordinate power planes, PnP (Plug-and-Play) peripherals, and
cooling fans. The system board is PC 97 compliant. Microsoft
's
PC 97 "OnNow" design allows continual "power on" with reduced
energy consumption.
RTC Timer to Power-on the System
The RTC installed on the system board allows your system to
automatically power-on on the set day and time. Set the day and
time you would like your system to power-on in the Resume By
Alarm field (Power Management Setup) of the Award BIOS.
Modem Wake-up/Ring-on
The Modem Wake-Up feature allows the sleeping (Suspend
mode) PC to wake-up to respond to incoming calls. The Modem
Ring-on feature allows the Soft Power Down (Soft-Off) PC to
power-on to respond to incoming calls. Enable this function in the
Resume By Ring field and select an IRQ channel for the external
modem in the Modem Use IRQ field (Power Management
Setup). Make sure to set JP2 to the COM port where your
modem is connected.
Note:
This feature supports external modem only.

1
Introduction
9
Dual Function Power Button
Depending on the setting in the BIOS setup, this switch will allow
your system to enter the Soft-Off or Suspend mode. Soft-Off By
PWR-BTTN in the Power Management Setup (Chapter 3) allows
you to select the method of powering off your system.
HDD Interface
 Two PCI IDE interfaces support up to four IDE devices
 Ultra DMA/33 supported (Synchronous DMA mode - data
transfer rate up to 33MB/sec.)
 PIO Mode 3 and Mode 4 Enhanced IDE (data transfer rate up
to 16.6MB/sec.)
 Bus mastering reduces CPU utilization during disk transfer
 ATAPI CD-ROM supported
 LS-120 and ZIP supported
FDD Interface
 One floppy drive interface supports two 360KB, 720KB,
1.2MB, 1.44MB, or 2.88MB floppy drives.
Onboard I/O
 Two NS16C550A-compatible serial ports
 One SPP/ECP/EPP parallel port
 One PS/2 mouse port
 One PS/2 or AT keyboard port
 One 20-pin ATX power supply connector
 One 12-pin standard AT power supply connector
USB Ports
The system board is equipped with two connectors for external
USB ports. USB allows data exchange between your computer
and a wide range of simultaneously accessible external Plug and
Play peripherals.

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IrDA Interface
The system board is equipped with an IrDA connector for
wireless connectivity between your computer and peripheral
devices.
Expansion Slots
The system board is equipped with 3 dedicated PCI slots, 2
dedicated 16-bit ISA slots and 1 shared PCI/ISA slot. All PCI and
ISA slots are bus masters.
Power Supply Connectors
The system board is a Baby AT form factor system board
designed to fit into an ATX form factor chassis. The board is
equipped with both ATX and AT power supply connectors.
Power-Supply Type in the Chipset Features Setup must be set
according to the type of power supply installed in your computer.
The default is AT (for an AT power supply). If you are using an
ATX power supply, make sure to set this field to ATX.
Using an ATX power supply, you can either shut down your com-
puter by pressing the Power button located on the front bezel of
your computer or by executing the Shut Down command under
the Windows

95 operating system. Your system will then enter
the Soft Off state.
To power-on your system automatically, enable Resume By Alarm
in the Power Management Setup of the Award BIOS. This will
allow you to set the day and time you would like your system to
power-on.
An ATX power supply also provides adequate airflow throughout
the chassis to prevent overheating the processor.

1
Introduction
11
Damage Free Intelligence
Damage Free Intelligence is a feature we have added to the
system board to warn users of some classes of hardware related
problems. It is a warning system on the system board that plays a
tune/music if certain hardware problems are detected.
CPU Slow Down
The system board is capable of monitoring the temperature of
the processor. If the processor's fan fails to function or the
temperature of the processor exceeds 85oC, the system will
decrease CPU utilization by slowing down the CPU clock.. This
will prevent the processor from being damaged.
 Monitors processor temperature and overheat alarm
If the temperature of the processor exceeds 85oC, an alarm
will sound and the Green LED will illuminate warning you of
system overheat.
 Monitors 5V and 12V power voltages and failure alarm
The system board is able to detect the output voltage of your
power supply. If the output voltage is over or under 5V or
12V (±10%), an alarm will sound warning you of voltage ir-
regularity.
 Automatic processor fan control to save energy, prevent sys-
tem overheat, prolong fan life and implement silent system.
The processors fan will rotate only if the temperature of the
processor is over 25oC.
Important:
To use the fan control feature, you must connect your
heatsinks fan directly to the fan connector located on the
system board. Please refer to Chapter 2 for details.
Warning Tune/Music
When you hear some tune/music from the PC speaker, you may
think it is a virus but it may not be the case (but you should still
scan your hard drive to double check).

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There are three main sets of reasons that the tune/music is playing
- Processor, Heatsink/Fan and Power Supply related tune/music.
Processor Related Tune/Music
1. The processor is missing. Insert a processor and set the jump-
ers.
2. The processor is not seated correctly. Check and make sure
the ZIF socket lever is down.
3. The processor has bent or broken pin. Fix or replace the
processor.
4. The processor is malfunctioning/bad. Replace the processor.
Heatsink/Fan Related Tune/Music
1. The processor does not have a heatsink or fan. Add a heatsink
with fan - all modern processors need it.
2. The processor has a passive heatsink only. Add a fan.
3. The processors fan/heatsink simply isn't cooling sufficiently. Use
a larger or more efficient heatsink/fan.
4. The processor is overheating because the fan stopped. Replace
the fan.
Power Supply Related Tune/Music
1. The power supplys voltages did not meet the ±10% specifica-
tion. Use a voltmeter to check the +5V and +12V lines, or
change the power supply to a different model/brand/type.
2. The power supplys wattage is too low and cannot meet the
system's continuous power requirements. Use a power/watt-
meter to check the systems power consumption, or change to
a power supply with a relatively larger wattage, e.g. 250W or
300W.
3. The power supply cannot meet the transient/instantaneous
demand, e.g. happens when HDD motor, etc. turns on. Use an
oscilloscope/DSO to monitor the 5V and 12V lines for/during
those transient stages. If so, change the power supply to a
different model/brand/type.

1
Introduction
13
Using AMD K6 or Cyrix/IBM/SGS-Thomson 6x86 Processor
When running AMD K6 or Cyrix/IBM/SGS-Thomson 6x86
processor and you hear a tune/music, the reason is most likely due
to #3 in the Heatsink/Fan Related Tune/Music section - the
heatsink/fan may not be sufficient for today's fast and hot running
processors (such as those from AMD and Cyrix/IBM/SGS-
Thomson).
AMD has verified a list of the heatsinks/fans that are most suitable
for their K6processors. Please refer to AMD's web site: http://
www.amd.com/products/cpg/k5/thermals/k86thermals.html for
details.
Intel's Pentium MMX (and also most classic Pentium processors)
do not run that hot since they are manufactured under the 0.35
micron process - these require less power and they generate less
heat. Also, Intel's VRT (Voltage Reduction Technology) further
reduces the power consumption (to 2.8V) - so overall, these Intel
processors can use a relatively smaller heatsink/fan combo than the
other processor brands/types.
This sound can be intermittent or continuous. If there is one or
two quick beeps/notes, typically at boot-up, it is safe to ignore it. If
it is not during boot-up or if there's a continuous tune/music, then
there is something that is definitely not correct and it must
immediately be checked or serviced.

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Package Checklist
The package contains the following items:
 The system board
 The users manual
 Serial, mouse and printer port cables
Option 1:
- One card-edge bracket with a 9-pin and 25-pin serial port
cables
- One card-edge bracket with a 25-pin printer port cable
and a PS/2 mouse port cable
Option 2:
- One card-edge bracket with two 9-pin serial port cables
and a PS/2 mouse port cable
- One 25-pin printer port cable for chassis mounting
 One 40-pin IDE hard disk cable
 One 34-pin floppy disk drive cable
 One driver diskette
 Five spare jumpers
 One card-edge bracket with two USB ports (optional)
If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.

2
Hardware Installation
CHAPTER

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This chapter summarizes the steps to install the 586ITBD system
board into your system unit. It also includes a description of the
area in which you must work and directions for memory installation.
Before installing the system board, obtain the memory you plan to
install. Refer to the System Memory section for the number and
type of memory modules needed for the amount of memory you
require.
Preparing the Area
Before unpacking the system board, make sure the location you
have selected is relatively free of dust and static electricity. Excessive
exposure to dust, static electricity, direct sunlight, excessive humidity,
extreme cold, and water can damage the operational capabilities of
your system board. Avoid placing the unit on surfaces such as
carpeted floors. These areas also attract static electricity which can
damage some circuits on your system board.
Make sure the power source has a properly grounded, three-
pronged socket. It is essential that the power connection be
properly grounded for correct functioning of your system board. For
further protection, we recommend that you use a surge suppressor.
This will protect the system board from damage that may result
from a power surge on the electrical line.
Move items that generate magnetic fields away from your system
board since magnetic fields can also damage your system board.
Once you have selected the ideal location, unpack the 586ITBD
system board carefully.
Handling the System Board
It is quite easy to inadvertently damage your system board even
before installing it in your system unit. Static electrical discharge can
damage computer components without causing any signs of physical
damage. You must take extra care in handling the system board to
ensure against electrostatic build-up.
Static Electricity Precautions
1. To prevent electrostatic build-up, leave the board in its anti-static
bag until you are ready to install it.

2
Hardware Installation
17
2. Wear an antistatic wrist strap.
3. Do all preparation work on a static-free surface with the
system board components facing up.
4. Hold the system board only by its edges. Be careful not to
touch any of the components, contacts or connections, especially
gold contacts, on the board.
5. Avoid touching the pins or contacts on all modules and
connectors. Hold modules and connectors by their ends.
Warning:
Electrostatic discharge (ESD) can damage your processor, disk
drives, add-in boards, and other components. Perform the
upgrade instruction procedures described at an ESD workstation
only. If such a station is not available, you can provide some ESD
protection by wearing an antistatic wrist strap and attaching it
to a metal part of the system chassis. If a wrist strap is
unavailable, establish and maintain contact with the system
chassis throughout any procedures requiring ESD protection.
Installing the System Board
If you are installing the system board, the following outlines the
basic installation steps. Before installing the system board into your
system unit, you should prepare the tools you will need.
You will need:
One medium size, flat-bladed screwdriver
One medium Phillips screwdriver
 One needle-nosed pliers
 One small nutdriver
1. Unlock your system unit. Turn off the power and disconnect all
power cords and cables.
2. Remove the system unit cover. Refer to the manufacturers
instructions if necessary.

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3. Detach all connectors from the old system board and remove
expansion cards seated in any expansion slots.
4. Loosen the screws holding the original system board and
remove the board from the system. Save the screws.
5. If you are using an ATX chassis, make sure you install an I/O
shield suitable for a Baby AT form factor system board. Your
I/O shield must comply to Intel

ATX spec. 2.01. Contact your
system chassis manufacturer for the appropriate I/O shield.
6. Remove the system board from its original packing box. Be
careful to avoid touching all connectors and pins on the
board. Please refer to the handling instructions for proper
handling techniques.
7. Insert the memory modules into the memory banks on the
system board. The quantity and location of the memory
modules depends on the memory configuration and type of
modules you intend to use.
8. Install the processor. Be sure pin 1 of the processor is aligned
with pin 1 of the socket.
9. Set the corresponding jumpers.
10. Install the prepared system board into the case and replace
the screws.
11. Reinstall all cards and connectors and replace the system unit
cover. Reconnect all power cords and cables.

2
Hardware Installation
19
Board Layout
square denotes pin 1

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System Memory
The system board supports two kinds of memory modules:
DIMM and SIMM. DIMM, which sometimes uses SDRAM,
performs better than SIMM, which uses DRAM. When you are
purchasing DIMMs, please specify you want the Intel compatible
type. (There are DIMMs made for other types of computers that
are not compatible.)
Note:
DIM and SIM modules cannot exist on the system board at
the same time. Use either SIMM or DIMM only.
DIMM
The two 168-pin DIMM (Dual
In-line Memory Module) sockets
use x64 EDO, FPM and SDRAM.
The system board can support
8MB to 256MB memory. The
table below summarizes the
DIMM sockets and modules
needed for the corresponding
memory sizes.
Memory Size
8MB
8MB
16MB
16MB
16MB
24MB
24MB
32MB
32MB
DIM 0
8MB
none
16MB
none
8MB
8MB
16MB
32MB
none
DIM 1
none
8MB
none
16MB
8MB
16MB
8MB
none
32MB