DFI 586STC User manual

- 32770131 -
586STC
Rev. A+
System Board
User’s Manual

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 in-
terference 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 in-
stallation. 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 oper-
ate the equipment.
2. Shielded interface cables must be used in order to comply with the
emission limits.
The manufacturer makes no warranties with respect to this documenta-
tion 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 per-
son or entity of such changes. Further, the manufacturer assumes no
responsibility for any errors that may appear in this document.
All product names referred to this manual are properties of their respec-
tive holders.

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
Cache Memory..................................................................................16
Jumper Settings for CMOS Clear .....................................................17
CPU Installation ................................................................................17
Jumper Settings for Intel Processors .................................. 19
Jumper Settings for Cyrix/IBM 6x86 &
6x86L Processors................................................................20
Jumper Settings for AMD-K5 Processors ..................................21
Installing Upgrade CPUs............................................................22
Installing A Fan/Heatsink ...........................................................24
Built-in Ports ......................................................................................26
Serial Ports.................................................................................26
PS/2 Mouse Port ........................................................................26
Parallel Port ................................................................................27
Floppy Disk Drive Controller ......................................................27
IDE Hard Disk Interface .............................................................28
Installing Expansion Cards ...............................................................30
Chapter 3: Software Installation...........................................................31
Award BIOS CMOS Setup Utility ......................................................31
Standard CMOS Setup ..............................................................32
BIOS Features Setup .................................................................36
Chipset Features Setup .............................................................40
Power Management Setup.........................................................41
PNP/PCI Configuration Setup ....................................................43
Load Fail-Safe Settings ..............................................................45
Load Optimal Settings................................................................46
Integrated Peripherals ................................................................46

4
Supervisor Password .................................................................48
User Password ...........................................................................49
IDE HDD Auto Detection............................................................49
HDD Low Level Format ..............................................................52
Save & Exit Setup ......................................................................52
Exit Without Saving ....................................................................53
Desktop Management Interface (DMI) .............................................53
System Error Report .........................................................................56
IDE Device Drivers............................................................................58
Chapter 4: Troubleshooting Checklist .................................................59
Appendix A: Types of Modules.............................................................63
Appendix B: Memory and I/O Maps.....................................................64
Appendix C: Connectors.......................................................................66

5
The 586STC, equipped with a 321-pin Zero Insertion Force (ZIF) CPU
socket, is a Pentiumprocessor-class system board supporting Intel
Pentiumprocessors running at 75MHz, 90MHz, 100MHz, 120MHz,
133MHz, 150MHz, 166MHz and 200MHz frequencies. The 586STC also
supports Intel Pentium processor with MMX technology - 166/
200MHz, future Intel PentiumOverDriveprocessors, Cyrix/IBM
6x86 & 6x86L P133+/P150+/P166+/P200+, and AMD-K5 PR75/
PR90/PR100/PR120/PR133.
The 586STC supports 8MB to 256MB of system memory using EDO or
fast page mode DRAM. It is equipped with four 72-pin SIMM sockets
which allow you to install x32 SIMMs. The system board also supports
256KB or 512KB pipeline/linear burst SRAM.
The 586STC design is based on the Peripheral Component Intercon-
nect (PCI) local bus and Industry Standard Architecture (ISA) standards.
It is equipped with 3 dedicated PCI slots, 3 dedicated 16-bit ISA slots
and 1 shared PCI/ISA slot.
The 586STC is equipped with two NS16C550A-compatible serial ports,
a 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 PS/2 mouse port, one PS/2 or AT keyboard connec-
tor, and one IrDA connector for wireless connectivity between your com-
puter and peripheral devices.
Chapter 1
Introduction

6
Features and Specifications
PROCESSOR
 Intel Pentium processor with MMX technology - 166/200MHz
 Intel Pentium75/90/100/120/133/150/166/200MHz
 Future Intel PentiumOverDriveprocessors
 Cyrix/IBM6x86 & 6x86L P133+/P150+/P166+/P200+
- Linear burst mode supported
 AMD-K5 PR75/PR90/PR100/PR120/PR133
CHIPSET
 SiS 5571 (Trinity) single chip solution
CACHE MEMORY
 256KB (32Kx32 x2) or 512KB (64Kx32 x2) pipeline/linear burst,
direct map write-back cache installed on the system board
SYSTEM MEMORY
•8MB to 256MB memory
 Four 72-pin SIMM sockets
 Uses EDO or fast page mode x32 DRAM, 60ns or 70ns, 5V
BIOS
 Award BIOS, Windows95 Plug and Play compatible
 Flash EPROM for easy BIOS upgrades
 Supports DMI function
ENERGY EFFICIENT DESIGN
 System power management supported
 CPU stopped clock control
 Hardware supports SMI green mode
 Microsoft/IntelAPM 1.2 compliant
 External power management switch supported

7
PCI IDE INTERFACE
 PIO Modes 3 and 4 Enhanced IDE (data transfer rate up to 16.6MB/
sec.)
 DMA Mode 2 Bus Master IDE (data transfer rate up to 22.2MB/sec.)
 Bus mastering reduces CPU utilization during disk transfer
 ATAPI IDE CD-ROM supported
INTEGRATED I/O
 ITE Giga 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
 Two USB connectors supported in future revision
CPU SOCKET
 321-pin ZIF socket (IntelSocket 7)
 Onboard Switching Power Supply supports up to 10 ampere CPU
power consumption: less heat and more efficiency
CONNECTORS
 1 connector for IrDA interface
 2 serial ports
 1 parallel port
 2 IDE connectors
 1 floppy connector
 1 PS/2 mouse port
 1 PS/2 or AT keyboard connector
EXPANSION SLOTS
 3 dedicated PCI slots
 3 dedicated 16-bit ISA slots
 1 shared PCI/ISA slot
PCB
 4 layers, Baby AT
 28cm (11.02") x 22cm (8.66")

8
Package Checklist
The 586STC package contains the following items:
 The 586STC system board
 The 586STC 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
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 586STC 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. Please refer to
the information on pages 14 and 15 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 586STC 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.

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 586STC 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.

11
2. Remove the system unit cover. Refer to the manufacturers instruc-
tions if necessary.
3. Detach all connectors from the old system board and remove ex-
pansion 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. Remove the 586STC from its original packing box. Be careful to
avoid touching all connectors and pins on the board. Please refer to
the handling instructions on pages 9 and 10 for proper handling
techniques.
6. Insert the memory modules into the memory banks on the 586STC.
The quantity and location of the memory modules depends on the
memory configuration and type of modules you intend to use.
7. Install the CPU. Be sure pin 1 of the CPU is aligned with pin 1 of
the socket.
8. Set the corresponding jumpers.
9. Install the prepared 586STC system board into the case and re-
place the screws.
10. Reinstall all cards and connectors and replace the system unit
cover. Reconnect all power cords and cables.

12
Board Layout

13
J1 - Parallel printer port
J2 - PS/2 keyboard port
J3 - AT keyboard connector
J4 - Floppy disk controller connector
J5 - Secondary IDE hard disk drive connector
J6 - Primary IDE hard disk drive connector
J7 - PS/2 mouse connector
J8 - COM 1 serial port
J9 - IrDA connector
J10 - COM 2 serial port
J13 - Turbo LED connector
J15 - Green LED connector
J16 - Green switch connector
J17 - HD LED connector
J19 - Reset switch connector
J20 - Speaker connector
J21 - Keylock & Power LED connector
PL1 - Power connector
Connectors - refer to pages 66-68
Expansion slots
PCI Slots 1, 2, 3, 4 - 32-bit PCI slots
ISA Slots 1, 2, 3, 4 - 16-bit ISA slots
page 30
page 30
Refer to
Sockets
SM1 to SM4 - SIMM sockets
U14 - ZIF socket
pages 14-15
pages 22-24
Refer to
Jumpers
JP1, JP3, JP5-JP7, JP10-JP15
Intel, Cyrix/IBM and AMD processors
JP9 - CMOS Clear
pages 19-21
page 17
Refer to

14
System Memory
The SIMM (Single In-line Memory Module) sockets are divided into two
banks on the system board, Bank 0 and Bank 1. Each bank consists of
2 SIMM sockets.
You will need either 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 of the
banks (Bank 0 or Bank 1) but you must populate one bank first before
going to the next bank.
The 586STC system board can support 8MB to 256MB of memory us-
ing 1MBx32, 2MBx32, 4MBx32, 8MBx32, or 16MBx32 72-pin SIMMs.
The table below shows the supported SIM modules and their corre-
sponding memory sizes.
The table below summarizes the bank locations and modules needed
for the corresponding memory sizes.
SIMM1
1MBx32

2MBx32

1MBx32
1MBx32
2MBx32
Memory Size
8MB
8MB
16MB
16MB
16MB
24MB
24MB
Bank 0
SIMM2
1MBx32

2MBx32

1MBx32
1MBx32
2MBx32
SIMM4

1MBx32

2MBx32
1MBx32
2MBx32
1MBx32
Bank 1
SIMM3

1MBx32

2MBx32
1MBx32
2MBx32
1MBx32
SIMMs
1MBx32
2MBx32
4MBx32
8MBx32
16MBx32
Memory Size
4MB
8MB
16MB
32MB
64MB

15
SIMM3

4MBx32
2MBx32
4MBx32
1MBx32
4MBx32
2MBx32

8MBx32
4MBx32
8MBx32
1MBx32
8MBx32
2MBx32
8MBx32
4MBx32

16MBx32
8MBx32
16MBx32
1MBx32
16MBx32
2MBx32
16MBx32
4MBx32
16MBx32
8MBx32
16MBx32
SIMM2
4MBx32

2MBx32
1MBx32
4MBx32
2MBx32
4MBx32
8MBx32

4MBx32
1MBx32
8MBx32
2MBx32
8MBx32
4MBx32
8MBx32
16MBx32

8MBx32
1MBx32
16MBx32
2MBx32
16MBx32
4MBx32
16MBx32
8MBx32
16MBx32
16MBx32
Memory Size
32MB
32MB
32MB
40MB
40MB
48MB
48MB
64MB
64MB
64MB
72MB
72MB
80MB
80MB
96MB
96MB
128MB
128MB
128MB
136MB
136MB
144MB
144MB
160MB
160MB
192MB
192MB
256MB
Bank 0
SIMM1
4MBx32

2MBx32
1MBx32
4MBx32
2MBx32
4MBx32
8MBx32

4MBx32
1MBx32
8MBx32
2MBx32
8MBx32
4MBx32
8MBx32
16MBx32

8MBx32
1MBx32
16MBx32
2MBx32
16MBx32
4MBx32
16MBx32
8MBx32
16MBx32
16MBx32
SIMM4

4MBx32
2MBx32
4MBx32
1MBx32
4MBx32
2MBx32

8MBx32
4MBx32
8MBx32
1MBx32
8MBx32
2MBx32
8MBx32
4MBx32

16MBx32
8MBx32
16MBx32
1MBx32
16MBx32
2MBx32
16MBx32
4MBx32
16MBx32
8MBx32
16MBx32
Bank 1

16
Installing a SIM Module
A SIM module simply snaps into a socket on the system board. Pin 1 of
the SIM module must correspond with Pin 1 of the socket.
Pin 1
notch
key
1. Position the SIMM above the socket with the notch in the module
aligned with the key on the socket.
2. Seat the module at a 45° angle into the bank. Make sure it is com-
pletely seated. Tilt the module upright until it locks in place in the
socket.
Cache Memory
The 586STC system board supports 256KB (32Kx32 x2) or 512KB
(64Kx32 x2) pipeline/linear burst, direct map write-back cache installed
at locations U3 and U4 of the system board. Regardless of the amount
of cache memory installed, one SRAM is mounted on location U5 for
tag SRAM to store the cacheable addresses. Refer to page 12 for the
locations of the SRAMs and tag SRAM.
Cacheable Memory
256KB
512KB
64MB
128MB
Cache Size Cacheable Range

17
CPU Installation
The 586STC allows for easy installation of CPUs. Make sure all jumpers are
set correctly before applying power or you may damage the CPU or system
board. Use a needle-nosed plier to move the jumpers if necessary.
Jumpers JP1, JP10, JP11, JP12 and JP13 are used to set the external bus
clock of your processor. Refer to the following pages for the external bus
clock that corresponds to your processor and set these jumpers accordingly.
The clock generator will determine the external bus clock that must be sent
to the processor through these settings.
Jumpers JP6 and JP7 are used to set the frequency ratio of your processor.
Refer to the following pages for the frequency ratio that corresponds to your
processor and set these jumpers accordingly.
Jumper Settings for CMOS Clear
Jumper JP9
CMOS Clear Select
If, for some reason, the CMOS becomes corrupted, the system can be
reconfigured with the default values stored in the ROM BIOS. To load
the default values, power off your system and set JP9 pins 2 and 3 to
On. Power on your system. After you boot up an operating system, turn
your system off again. Set JP9 back to its default setting, pins 1 and 2
On.
JP9
1-2 On: Normal
(default)
123
2-3 On: CMOS Clear
123

18
After setting these jumpers, an Intel Pentiumprocessor will multiply the
external bus clock by the frequency ratio to become the internal clock
speed. Internal clock speed is the commonly used speed of Intel processors
in the market and is the actual operating clock of the processor (external
bus clock x frequency ratio = internal clock speed).
Cyrix and AMD processors use the P-rating system which is the overall
CPU performance rating. Under the system, these processors slightly out-
perform Intels Pentium processors.
Jumper JP5 is used to set the cache burst mode of your processor. Refer to
the following pages and set this jumper accordingly.
Jumpers JP3, JP14 and JP15 are used to set the voltage of your processor.
Make sure these jumpers are set correctly, otherwise your system will hang.
The table below shows the External System Bus Clock of the CPUs sup-
ported by the system board and their corresponding PCI Clock and ISA Bus
Clock.
External System Bus Clock
50MHz
55MHz
60MHz
66MHz
75MHz
PCI CLK
25MHz
27.5MHz
30MHz
33MHz
32MHz
ISA Bus CLK
8.333MHz
9.1666MHz
7.5MHz
8.25MHz
8MHz

19
Jumper Settings for IntelâProcessors
Intel®Processors
75/90/100MHz
120/133MHz
150/166MHz
200MHz
Freq. Ratio
1.5x
2x
2.5x
3x
JP6
1-2 On
1-2 On
2-3 On
2-3 On
JP7
1-2 On
2-3 On
2-3 On
1-2 On
Intel®Processors
75MHz
90/120/150MHz
100/133/166/200MHz
JP5
1
2
JP5
Off
On
Processors
Intelâ/AMD-K5
Cyrixâ/IBMâ
Warning:
1. JP5 is for Cache Burst Mode Select. When using
an Intel

processor, you have to set JP5 to Off for
interleave burst.
2. The default setting of JP3, JP14 and JP15 is
3.3V. If the voltage of your processor is not 3.3V,
make sure you set JP3, JP14 and JP15 according
to the voltage of your processor, otherwise, your
system will hang.
JP7
JP6
1
2
3
JP3
2
1
78
JP14
1
2
7
812
9
JP15
10
* Default
# Pentium processor with MMX
technology - 166/200MHz
Voltage
3.3V* (VR/STD)
3.5V (VRE)
2.9V
2.8V#
2.7V
JP1
2
1
78 JP12
JP11
JP13
JP10
1
2
3
Ext. System
Bus CLK
50MHz
60MHz
66MHz
JP1
3-4 On, 7-8 On
3-4 On, 5-6 On
5 -6 On
JP10
1-2 On
1-2 On
1-2 On
JP11
2-3 On
1-2 On
2-3 On
JP12
2-3 On
2-3 On
1-2 On
JP13
2-3 On
2-3 On
2-3 On
JP15
3-4 On
1-2 On
JP3
All Off
All Off
JP14
5-6 On
7-8 On
5-6 On
7-8 On
1-2 On
3-4 On
5-6 On
1-2 On
3-4 On
5-6 On
All Off
1-2 On
3-4 On
5-6 On
All Off
All Off
5-6 On
7-8 On
9-10 On

20
Jumper Settings for Cyrixâ/IBMâ6x86& 6x86L Processors
Warning:
1. JP5 is for Cache Burst Mode Select. When
using a Cyrix

/IBM

processor, you have to set
JP5 to On for linear burst.
2. The default setting of JP3, JP14 and JP15 is
3.3V. If the voltage of your processor is not
3.3V, make sure you set JP3, JP14 and JP15
according to the voltage of your processor,
otherwise, your system will hang.
JP1
2
1
78JP12
JP11
JP13
JP10
1
2
3
P-Rating
P133+
P150+
P166+
P200+*
Ext. Sysyem
Bus CLK
55MHz
60MHz
66MHz
75MHz
JP1
1-2 On
3-4 On, 5-6 On
5-6 On
3-4 On
JP10
1-2 On
1-2 On
1-2 On
2-3 On
JP11
2-3 On
1-2 On
2-3 On
1-2 On
JP12
2-3 On
2-3 On
1-2 On
2-3 On
JP13
1-2 On
2-3 On
2-3 On
1-2 On
P-Rating
P133+/P150+/P166+/P200+
Processors
Intelâ/AMD-K5
Cyrixâ/IBMâ
1
JP5
2
JP5
Off
On
JP15
3-4 On
1-2 On
*Default
Voltage
3.3V* (VR/STD)
3.5V (VRE)
2.9V
2.8V (6x86L)
2.7V
JP3
All Off
All Off
JP14
5-6 On
7-8 On
5-6 On
7-8 On
1-2 On
3-4 On
5-6 On
1-2 On
3-4 On
5-6 On
All Off
1-2 On
3-4 On
5-6 On
All Off
All Off
5-6 On
7-8 On
9-10 On
JP3
2
1
78
JP14
1
2
7
812
9
JP15
10
Freq. Ratio
2x*
JP7
2-3 On
JP6
1-2 On
JP7
JP6
1
2
3