DFI 586ITBD User manual

586ITBD
Rev. A+
System Board
User’s Manual
34270620

Copyright
Thispublicationcontainstheinformationthatisprotectedbycopyright.
Nopartofitmaybereproducedinanyformorbyanymeansorused
to make any transformation/adaptation without the prior written
permissionfromthecopyrightholders.
Thispublicationis provided forinformationalpurposes only. The
manufacturermakesnorepresentationsorwarrantieswithrespectto
thecontentsoruseofthismanualandspecificallydisclaimsanyexpress
orimpliedwarrantiesofmerchantabilityor fitnessforanyparticular
purpose.Theuserwillassumetheentireriskoftheuseortheresultsof
theuseofthisdocument.Further,themanufacturerreservestheright
torevisethispublicationandmakechangestoitscontentsatanytime,
withoutobligationtonotifyanypersonorentityofsuchrevisionsor
changes.
AllRightsReserved.
Trademarks
Microsoft®MS-DOS®,WindowsTM andWindows®95areregistered
trademarksofMicrosoftCorporation.IntelandPentiumareregistered
trademarksofIntelCorporation.Cyrix,6x86,6x86Land6x86MXare
registeredtrademarksof Cyrix Corporation.AMD,K5 andK6are
registeredtrademarksofAdvancedMicroDevices,Inc. IBMisaregistered
trademarkofInternationalBusinessMachineCorporation.Awardisa
registeredtrademarkofAwardSoftware,Inc.Othertrademarksand
registeredtrademarksofproductsappearinginthismanualarethe
propertiesoftheirrespectiveholders.
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.

TableofContents
Chapter 1 - Introduction
Features and Specifications..............................................................................
Package Checklist..................................................................................................7
12
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........................................................................................................
46
46
50
54
55
59
61
61
62
65
66
Chapter 2 - Hardware Installation
Preparingthe 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 forAMD Processors................................................
Installing Upgrade Processors.................................................................
Jumper Settings for CMOS Clear.................................................................
Jumper Settings for Modem Ring-on.........................................................
Factory Testing Jumpers.....................................................................................
Ports and Connectors........................................................................................
Expansion Slots.......................................................................................................
14
14
15
17
18
23
23
24
25
26
27
31
31
32
33
44

Appendix A - DIM and SIM Modules
Types of Modules..................................................................................................75
Appendix B - Memory and I/O Maps
MemoryAddress Map.......................................................................................
I/OAddress Map...................................................................................................78
78
Appendix C - System Error Report
POST Beep...............................................................................................................
Error Messages.......................................................................................................81
81
Appendix D - Troubleshooting
Troubleshooting Checklist................................................................................84
IDE HDDAuto Detection..............................................................................
HDD Low Level Format..................................................................................
Save & Exit Setup.................................................................................................
Exit Without Saving.............................................................................................
67
68
69
69
Chapter 4 - Driver Installation
Pre-installation Guide to Windows95...................................................
Installing IDE Drivers for Windows95..................................................71
72

586ITBD System Board User’s Manual
1
6
Introduction
CHAPTER

1
Introduction
7
Features and Specifications
Processor Upgrade
The 586ITBD 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, 2.8V,
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
•AMDK5 PR90/PR100/PR120/PR133/PR166
•AMDK6/166, K6/200, K6/233, K6/266
Chipset
•Intel82430TX PCIset chipset
System Memory
The 586ITBD 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

586ITBD System Board User’s Manual
1
8
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 586ITBD is designed to meet the ACPI (Advanced
Configuration Power Interface) specification. It has energy saving fea-
tures which enable operating systems to reliably manage and coor-
dinate power planes, PnP (Plug-and-Play) peripherals, and cooling
fans. The 586ITBD 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 586ITBD system board allows your
system to automatically wake up 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 (Power
Management Setup) of the Award BIOS and set JP2 to the COM
port where your modem is connected.
Note:
This feature supports external modem only.

1
Introduction
9
Damage Free Intelligence
•Monitors processor temperature and overheat alarm.
If the temperature of the processor is over 85oC, an alarm will
sound and the Green LED will illuminate warning you of system
overheat.
Some of the most common causes leading to high temperature
are:
-The fan is not functioning normally or has stopped. Turn off
your system and replace the fan.
-The space clearance of the processor, fan and heat sink is
inadequate to maintain proper airflow and heat dissipation.
Refer to the Clearance Requirements section in Chapter 2 of
this manual.
-The chassis or cabinet has poor ventilation.
•Monitors 5V and 12V power voltages and failure alarm.
The 586ITBD 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 irregularity.
Some of the most common causes leading to unstable output
voltage of a power supply are:
-The power supply is not functioning normally. Turn off your
system and replace the power supply.
-The AC input from the power outlet to your system is
unstable.
•Automatic processor fan control to save energy, prevent system
overheat, prolong fan life and implement silent system.
With the system’s power switched on, the processor’s fan will
rotate only if the temperature of the processor is over 25oC.

586ITBD System Board User’s Manual
1
10
Dual Function Power Button
Dual Function Power Button allows two distinct OFF modes. In
Sleep mode, a PC powers down but not off. In Soft-Off, a PC shuts
down but requires a reboot to "awaken" it.
“Soft-Off By PWR-BTTN” in the Power Management Setup 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
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 586ITBD 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.

1
Introduction
11
IrDA Interface
The 586ITBD is equipped with an IrDA connector for wireless
connectivity between your computer and peripheral devices.
Expansion Slots
Your system 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 586ITBD 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 wake
up.
With an external modem installed, you can power on your system
to remotely transmit or access data. Enable “Resume By Ring” in the
Power Management Setup of the Award BIOS and set jumper JP2
according to the COM port where your modem is connected.
An ATX power supply also provides adequate airflow throughout
the chassis to prevent overheating the processor.

586ITBD System Board User’s Manual
1
12
Package Checklist
The 586ITBD package contains the following items:
•The 586ITBD system board
•The 586ITBD 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 IDE 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.

Hardware Installation
CHAPTER

586ITBD System Board User’s Manual
2
14
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
15
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 586ITBD 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.

586ITBD System Board User’s Manual
2
16
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 586ITBD 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
586ITBD. 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 586ITBD 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
17
Board Layout
square denotes pin 1

586ITBD System Board User’s Manual
2
18
System Memory
The 586ITBD 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 586ITBD 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 586ITBD system board can
support 8MB to 64MB memory using 1MBx64, 2MBx64 or
4MBx64 DIMM. The table below shows the supported DIM
modules and their corresponding memory sizes.
DIMMs
1MBx64
2MBx64
4MBx64
Memory Size
8MB
16MB
32MB
The table below summarizes the DIMM sockets and modules
needed for the corresponding memory sizes.
MemorySize
8MB
8MB
16MB
DIM0
8MB
none
16MB
DIM1
none
8MB
none

2
Hardware Installation
19
MemorySize
16MB
16MB
24MB
24MB
32MB
32MB
32MB
40MB
40MB
48MB
48MB
64MB
DIM0
none
8MB
8MB
16MB
32MB
none
16MB
8MB
32MB
16MB
32MB
32MB
DIM1
16MB
8MB
16MB
8MB
none
32MB
16MB
32MB
8MB
32MB
16MB
32MB
1.Pull the “tabs” which are at the ends of the socket to the side.
2.Position the DIMM above the socket with the “notches” in the
module aligned with the “keys” on the socket.
3.Seat the module vertically into the socket. Make sure it is
completely seated. The tabs will hold the DIMM in place.
Pin 1
Notch
KeyTab
Tab
Installing the DIM Module
A DIM module simply snaps into a socket on the system board. Pin
1 of the DIM module must correspond with Pin 1 of the socket.

586ITBD System Board User’s Manual
2
20
SIMM
The SIM sockets are divided into
two banks on the system board,
Bank 0 and Bank 1. Each bank
consists of 2 SIMM sockets.
Your system board supports 8MB
to 256MB of memory using
1MBx32, 2MBx32, 4MBx32,
8MBx32 or 16MBx32 72-pin
SIMMs (Single In-line Memory
Module). You will need 2 or 4
pieces of SIM modules, depending
on the amount of memory you intend to install. Make sure you
insert the same type of SIMMs in one bank. You can install SIMMs in
either banks but you must populate one bank first before going to
the next bank.
The table below shows the supported SIM modules and their
corresponding memory sizes.
SIMMs
1MBx32
2MBx32
4MBx32
8MBx32
16MBx32
Memory Size
4MB
8MB
16MB
32MB
64MB