DFI 586ITOX User manual

586ITOX
Rev. B+
System Board
User’s Manual
34070910

Copyright
Thispublicationcontainstheinformationthatisprotectedbycopyright.
Nopartofitmaybereproducedinanyformorbyanymeansorused
to make any transformation/adaptation without the prior written
permissionfromthecopyrightholders.
Thispublication is providedfor informational purposesonly. The
manufacturermakesnorepresentationsorwarrantieswithrespectto
thecontentsoruseofthismanualandspecificallydisclaimsanyexpress
orimpliedwarrantiesofmerchantabilityorfitnessforanyparticularpurpose.
Theuserwillassumetheentireriskoftheuseortheresultsoftheuseof
thisdocument.Further,themanufacturerreservestherighttorevisethis
publicationandmakechangestoitscontentsatanytime,withoutobligation
tonotifyanypersonorentityofsuchrevisionsorchanges.
AllRightsReserved.
Trademarks
Microsoft®MS-DOS®,WindowsTM andWindows®95areregistered
trademarksofMicrosoftCorporation.IntelandPentiumareregistered
trademarksofIntelCorporation.Cyrix,6x86,6x86Land6x86MXare
registeredtrademarksof Cyrix Corporation.AMD,K5and K6 are
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 2 - 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.......................................................................................................
IDE HDDAuto Detection.............................................................................
Save & Exit Setup.................................................................................................
Exit Without Saving.............................................................................................
14
14
18
22
24
28
30
30
31
34
35
36
37
37
Chapter 3 - Upgrade Guide
System Memory.....................................................................................................
Cache Memory.......................................................................................................
Processor Upgrade Information..................................................................
Jumper Settings for Modem Ring-on........................................................
Jumper Settings for CMOS Clear...............................................................
Jumper Settings for VGA..................................................................................
Jumper Settings for Software Power-off.................................................
39
43
44
52
53
54
55

Appendix A - Installation Instructions
Preparing theArea..............................................................................................
Handling the System Board............................................................................61
61
Chapter 4 - Desktop Management Interface
Desktop Management Interface..................................................................57
Appendix B - Connecting Cables
Ports and Connectors.......................................................................................65
Appendix C - System Board Layout
System Board Layout.........................................................................................77
Appendix D - DIM and SIM Modules
Types of Modules.................................................................................................79
Appendix F - Driver Installation
Driver Installation..................................................................................................84
Appendix G - Troubleshooting
Troubleshooting.....................................................................................................86
Appendix E - Watchdog Timer
Using the Watchdog Timer Function........................................................82

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Introduction
CHAPTER

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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. It is also
equipped with a switching voltage regulator that supports 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6x86 and 6x86L PR150+/PR166+
•Cyrix6x86MX-PR166/PR200
•AMDK5 PR90/PR100/PR120/PR133/PR166
•AMDK6-166, K6-200, K6-233
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
ACPI Specification and OS Directed Power
Management
The system board 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 coordi-
nate 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 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 theAward 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 JP10 to the COM
port where your modem is connected.
Note:
This feature supports external modem only.

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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 3 of
this manual.
-The chassis or cabinet has poor ventilation.
•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 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
(±10%).

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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 of the
Award BIOS allows you to select the method of powering off your
system.
Watchdog Timer
The system board is designed for Industrial PC applications. It
supports the Watchdog Timer function allowing your application to
regularly “clear” the system at the set time interval. If the system
hangs or fails to function, it will reset at the set time interval so
that your system will continue to operate. Refer to “Watchdog
Timer” in the Chipset Features Setup of the Award BIOS.
•8 step counter (0.5/1/2/4/8/16/32/64 sec) controlled by the
BIOS
Onboard Graphics Accelerator
•S3 Trio64V+ accelerated 64-bit graphics controller
•1MB video memory onboard
•Video Playback feature
•VESA DDC2B for Plug and Play monitors
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