DFI 586ITX User manual

586ITX
Rev.A+
System Board
User’s Manual
- 33370410 -

FCC 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.
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 manufacturer’s instructions.
The manufacturer makes no warranties with respect to this documentation and
disclaims any implied warranties of merchantability, quality, or fitness for any
particular purpose. The information in this document is subject to change
without notice. The manufacturer reserves the right to make revisions to this
publication and to make changes to any and/or all parts of its content, at any
time, without obligation to notify any person or entity of such changes. Further,
the manufacturer assumes no responsibility for any errors that may appear in
this document.

Table of Contents
Chapter 1: Introduction............................................................ 5
Features and Specifications.................................................. 6
Package Checklist .............................................................. 8
Chapter 2: Hardware Installation............................................... 9
Preparing the Area.............................................................. 9
Handling the System Board.................................................. 9
Installing the System Board.................................................10
Board Layout ....................................................................12
System Memory................................................................14
DIMM........................................................................14
SIMM........................................................................15
Cache Memory.................................................................18
Processor Installation.........................................................18
Jumper Settings for Intel Processors.................................. 20
Jumper Settings for AMD-K5/K6 Processors.......................21
Installing Upgrade CPUs................................................22
InstallingA Fan/Heatsink................................................24
Jumper Settings for CMOS Clear..........................................26
Jumper Settings for Modem Ring-in.......................................26
Factory Testing Jumpers......................................................27
Ports and Connectors.........................................................28
Serial Ports.................................................................28
Parallel Port ................................................................28
Floppy Disk Drive Controller...........................................29
IDE Hard Disk Interface.................................................30
Universal Serial Bus Connectors......................................32
IrDA Connector............................................................33
Installing Expansion Cards...................................................34
Chapter 3: Software Installation...............................................35
Award BIOS CMOS Setup Utility...........................................35
Standard CMOS Setup..................................................36
BIOS Features Setup....................................................40
Chipset Features Setup.................................................44
Power Management Setup.............................................44
PNP/PCI Configuration Setup..........................................48
Load Fail-Safe Settings..................................................50

4
Load Optimal Settings...................................................50
Integrated Peripherals...................................................51
Supervisor Password....................................................54
User Password............................................................54
IDE HDD Auto Detection................................................55
HDD Low Level Format .................................................57
Save & Exit Setup........................................................58
Exit Without Saving.......................................................58
System Error Report ..........................................................59
Driver Installation...............................................................61
Chapter 4: Troubleshooting Checklist.............................................64
Appendix A: Types of Modules......................................................67
Appendix B: Memory and I/O Maps................................................69
Appendix C: Connector Pin Assignments.......................................71

5
The 586ITX, equipped with a 321-pin Zero Insertion Force (ZIF) CPU
socket, is a Pentiumprocessor-class system board supporting Intel
Pentiumprocessors running at 90MHz, 100MHz, 120MHz, 133MHz,
150MHz, 166MHz and 200MHz frequencies. The 586ITXalso supports
Intel Pentiumprocessor with MMX™technology - 166/200/233MHz, fu-
ture IntelPentiumOverDriveprocessors, AMD-K5™PR90/PR100/
PR120/PR133/PR166, and AMD-K6™PR2-166/PR2-200/PR2-233.
The 586ITX system board can support 8MB to 256MB of system
memory. It is equipped with two DIMM sockets using x64 EDO, fast
page mode or SDRAM, and 4 SIMM sockets using EDO or fast page
mode x32 DRAM. This system board also supports 512KB pipeline
burst SRAM.
The 586ITX system board can support ACPI Specification, Modem
Wake-Up, PC 97 Compliance, and Dual Function Power Button to en-
hance its performance. ACPI (Advanced Configuration Power Interface)
has energy saving features which enable operating systems to reliably
manage and coordinate power planes, PnP (Plug-and-Play) peripherals,
and cooling fans. ACPI is the specification of Microsoft's anticipated
PC 97 "OnNow" design allowing continual "power on" with reduced en-
ergy consumption. The Modem Wake-Up feature allows the "sleeping"
PC to power on to respond to incoming calls.
PC 97 Compliance defines the adherence to Plug-and-Play compatibil-
ity, hardware power management, and 32-bit device drivers for Win-
dows 95& Windows NTspecifications. 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.
The 586ITX design is based on the Peripheral Component Interconnect
(PCI) local bus and Industry Standard Architecture (ISA) standards. It is
equipped with 3 dedicated PCI slots, 2 dedicated 16-bit ISA slots and 1
shared PCI/ISA slot.
Chapter 1
Introduction

6
The 586ITX is equipped with two NS16C550A-compatible serial ports,
an SPP/ECP/EPP parallel port, a shrouded floppy disk header, and two
shrouded PCI IDE headers with bus mastering capabilities that highly
reduce CPU use during disk transfer. This system board is also
equipped with one mini-DIN-6 PS/2 mouse port, one mini-DIN-6 PS/2
keyboard port, two USB ports and one IrDA connector for wireless con-
nectivity between your computer and peripheral devices.
The 586ITX system board is designed to fit into an ATX form factor
case. 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.
Features and Specifications
Processor
•Intel Pentiumprocessor with MMX™technology - 166/200/233MHz
•Intel Pentium90/100/120/133/150/166/200MHz
•Future PentiumOverDrive processors
•Cyrix6x86™& 6x86L PR150+/PR166+ and M2 series (supported
in future revision)
•AMD-K5™PR90/PR100/PR120/PR133/PR150/PR166
•AMD-K6™PR2-166/PR2-200/PR2-233
Chipset
•Intel82430TX PCIset
Cache Memory
•512KB pipeline burst, direct map write-back cache installed on the
system board
System Memory
•8MB to 256MB memory
•Two 168-pin DIMM sockets using x64 EDO (60/70ns), fast page
mode (60/70ns), or SDRAM (10/12/13ns), 3.3V
•Four 72-pin SIMM sockets using EDO or fast page mode x32
DRAM, 60/70ns, 5V

7
BIOS
•Award BIOS, Windows95 Plug and Play compatible
•Flash EPROM for easy BIOS upgrades
Energy Efficient Design
•Supports ACPI specification and OS Directed Power Management
•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
PCI IDE Interface
•Ultra DMA/33 supported (Synchronous DMA mode - data transfer
rate up to 33MB/sec.)
•DMA Mode 2 Bus Master IDE (data transfer rate up to 22.2MB/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
Integrated I/O
•Ultra I/O controller
•Two NS16C550A-compatible high speed UARTs
•One SPP/ECP/EPP parallel port
•Supports 360KB, 720KB, 1.2MB, 1.44MB, and 2.88MB floppy drives
CPU Socket
•321-pin ZIF socket (IntelSocket 7)
•Equipped with a switching power module that supports 2.8V, 2.9V,
3.2V, 3.3V and 3.5V
Connectors
•2 connectors for external USB (Universal Serial Bus) ports
•1 connector for IrDA interface
•2 DB-9 serial ports
•1 DB-25 parallel port
•2 IDE connectors
•1 floppy connector

8
•1 mini-DIN-6 PS/2 mouse port
•1 mini-DIN-6 PS/2 keyboard port
•1 20-pin ATX power supply connector
Expansion Slots
•3 dedicated PCI slots
•2 dedicated 16-bit ISA slots
•1 shared PCI/ISA slot
PCB
•4 layers, ATX form factor
•30.48cm (12") x 23.04cm (9.07")
Package Checklist
The 586ITX package contains the following items:
•The 586ITX system board
•The 586ITX user’s manual
•One 40-pin IDE hard disk cable
•One 34-pin floppy disk drive cable
•One IDE driver diskette
•Five spare jumpers
If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.

9
Chapter 2
Hardware Installation
This chapter summarizes the steps to install the 586ITX 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 expo-
sure to dust, static electricity, direct sunlight, excessive humidity, ex-
treme 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 sys-
tem 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 586ITX system board care-
fully.
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.

10
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.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 by its edges only. 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 anti-
static 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 586ITX system board, the following outlines the
basic installation steps. Before installing the system board into your sys-
tem 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.