Pentium SQ578 User manual

SQ578 Pentium PCI
Mainboard
User’s Manual

SQ578
User‘s Notice
Static Electricity Precaution
Static electricity can easily damage your SQ578 mainboard. Observing a few basic
precautions can help you safeguard against damage that could result in expensive repairs.
Follow the simple measures below to protect your equipment from static electricity damage:
Keep the mainboard and other system components in their anti-static packaging until you are
ready to install them.
Touch a grounded surface before you remove any system component from its protective anti-
static packaging. Unpacking and installation should be done on a grounded, anti-static mat.
The operator should be wearing an anti-static wristband, grounded at the same points as the
anti-static mat.
After removing the mainboard from its original packing, only place it on a grounded, anti-
static surface component side up. Immediately inspect the board for damage. Due to shifting
during shipping, it is suggested that the installer press down on all of the socket IC‘s to
ensure they are properly seated. Do this only with the board placed on a firm flat surface.
During configuration and installation, touch a grounded surface frequently to discharge any
static electrical charge that may have built up in your body. The best precaution is to wear a
grounded wrist strap. When handling the mainboard or an adapter card avoid touching its
components. Handle the mainboard and adapter cards either by the edges or by the adapter
card’s case mounting bracket.
The information presented in this publication has been carefully screened for reliability. The
manufacturer provides this manual “As is” with no warranties of any kind, either expressed
or implied, including but not limited to the implied warranties or conditions of this product’s
fitness for any particular purpose. In no event shall the manufacturer be liable for any loss of
profits, loss of business, loss of data, interruption of business, or indirect, special, incidental,
or consequential damages of any kind, even if the manufacturer has been advised of the
possibility of such damages arising from any defect or error in this manual or product.
The manufacturer has the right to change this specification without pre-notice.
Trademarks and product names appearing in this manual are may or may not be registered
with their respective holders.

SQ578
Table of Contents
1INTRODUCTION......................................................................................1-1
1.1 OVERVIEW ............................................................................................1-1
1.2 HOW TO USE THIS MANUAL....................................................................1-1
1.3 ITEM CHECKLIST....................................................................................1-2
2KEY FEATURES.......................................................................................2-1
2.1 PRODUCT SPECIFICATION......................................................................2-1
2.2 MAINBOARD LAYOUT..............................................................................2-2
3INSTALLATION PREVIEW....................................................................3-1
3.1 JUMPER SETTINGS ................................................................................3-1
3.2 INSTALLATION OF DRAM MODULES (SIMM OR DIMM).........................3-9
3.3 INSTALLATION OF THE CPU.................................................................3-12
3.4 INSTALLATION OF EXPANSION SLOTS...................................................3-13
3.5 INSTALLATION OF IDE, I/O CABLES CONNECTION ................................3-13
4BIOS SETUP..............................................................................................4-1
4.1 STARTING SETUP ..................................................................................4-1
4.2 MAIN SETUP MENU................................................................................4-3
4.3 STANDARD CMOS SETUP MENU..........................................................4-4
4.4 BIOS FEATURES SETUP MENU.............................................................4-8
4.5 CHIPSET FEATURES SETUP MENU.......................................................4-12
4.6 POWER MANAGEMENT SETUP MENU ..................................................4-14
4.7 PCI / PLUG AND PLAY SETUP..............................................................4-17
4.8 PERIPHERAL SETUP.............................................................................4-21
4.9 AUTO-DETECT HARD DISKS ................................................................4-23
4.10 SUPERVISOR PASSWORD SETTING .....................................................4-24
4.11 AUTO CONFIGURATION WITH OPTIMAL SETTINGS................................4-24
5VGA INSTALLATION(OPTION)............................................................5-1
5.1 INTRODUCTION......................................................................................5-1
5.2 SOFTWARE SUPPORT...............................................................................5-4

SQ578
1Introduction
1.1 Overview
The SQ578 mainboard integrates the Pentium microprocessor, memory, and I/O technologies
and is designed to fit into a standard AT form factor chassis. The design supports Pentium
processors, Pentium processors with MMX technology, Cyrix 6X86/6X86L/MX Processors,
IDT-C6 Processors, and AMD K5/K6 Processors. Page 2-2 illustrates the mechanical form
factor for the SQ578 mainboard.
1.2 How to use this Manual
This manual provides information necessary to install and operate the SQ578 mainboard and
is organized into five chapters. The purpose of this manual is to explain the installation
procedures and operations of the mainboard as specified below.
1. Introduction Manual information and checklist
2. Key Features An overview specification of this mainboard
3. Installation Preview Instructions on how to setup the mainboard
4. BIOS Setup BIOS software setup information
5. VGA Installation (Option) On Board VGA Feature information

SQ578
1.3 Item Checklist
The SQ578 mainboard should contain following items (ü). Immediately, contact your
retailer if you discover any missing items, or any damage.
þThe SQ578 mainboard
þThis SQ578 user‘s manual
þ1 IDE ribbon cable
þ1 floppy ribbon cable
þ1 parallel ribbbon cable and PS/2 mouse cable with mounting bracket
þ2 serial ribbbon cable attached to a mounting bracket
o1 VGA ribbon cable attached to a mounting bracket(optional)
qUSB (2 port) cable with bracket (optional)
qInfrared (IrDA) module with ribbon cable (optional)

SQ578
2Key Features
2.1 Product Specification
²Processor: Supports 75-300MHz Pentium family: Intel P54C, Pentium Processors
with MMX Technology (P55C), AMD-K5, AMD-K6 Cyrix 6X86, 6X86L, 6X86MX
and IDT-C6 Processors. The ZIF Socket 7 will support future Pentium Overdrives.
²L2 Cache: Onboard 256KB or 512KB Pipeline Burst SRAM
²SIMM (System Memory): Supports 70ns or faster Extended Data Output (EDO) or
Fast Page (FP) SIMM in four 72-pin SIMM sockets using 4MB, 8MB, 16MB, 32MB
or 64MB for a maximum of 256MB system memory.
²DIMM (System Memory):Supports 66MHz or faster unbuffer 2 or 4 clock 3.3V
DIMM in two 168-pin DIMM sockets using 8, 16, 32, 64 or 128 for a maximum of
256MB system memory.
²Chipset: Features SiS 5598 Pentium Single chip Integrated VGA or SiS 5582
Pentium Single chip without VGA, with a Winbond 83877F/TF super I/O controller
chip.
²Super VGA(option): To provide a compact video and graphics solution for PC based
system, high performance 3-in-1 PCI true-color graphics accelerator with video
accelerate functions, supports DCI Drivers and Direct Draw 3D Drivers, video
overlay for any graphic modes. Real-Magic MPEG API compatible. Supports DDC1
And DDC2B specifications.
²Expansion Slots:Three 32-bit PCI and Four 16-bit ISA expansions slots.
²Super Multi-I/O:Two high-speed UART compatible serial ports and One parallel
port with ECP and EPP compatibility. One FDD header supporting either 5.25“ or 3.5”
(1.2 or 1.44/2.88MB) floppy drives. One IrDA TX/RX infrared port.
²Keyboard and PS/2 Mouse: Onboard Standard AT Keyboard and PS/2 Mouse Port
²PCI bus Master IDE Controller:Onboard dual-channel PCI Bus Master IDE
support 4 IDE devices. This controller supports PIO Mode 3 and Mode 4 with a data
transfer rate up to 17MB per second. An Ultra DMA 33 (UDMA) supports data
transfer rates up to 33 MB per second. Also supports LS120 Floppy Drive.
²Universal Serial Bus (USB):Two standard USB interface supports up to 48MHz and
127 peripheral devices.
²PCI BIOS:Win 95 Plug and Play with Green power saving support, APM 1.2 and
DMI Support.
²Mechanical: Baby AT form factor 220 mm x 270 mm.

SQ578
2.2 Mainboard Layout
16-bit ISA Slot
16-bit ISA Slot
16-bit ISA Slot
16-bit ISA Slot
Floppy Drive Conn.
Secondary IDE Conn
Primary IDE Conn
ZIF Socket 7
Flash BIOS
5598
or
5582
32-bit PCI Slot
32-bit PCI Slot
32-bit PCI Slot
DIMM Socket 2
DIMM Socket 1
SIMM Socket 4
SIMM Socket 3
SIMM Socket 2
SIMM Socket 1
Power Conn
COM2
COM1
KBD
(J1)
PS/2 MOUSE
JP1
J29
J30
J34
JP18
JP2 JP3
JP15
JP16
32K/64K*32
32K/64K*32
JP17
W83877F
/TF (J6)
USB
KEYLOCK
PWR LED
SPEAKER
HDD LED
J33
GR LED
RESET
J32
EXT SMI
JP10
JP11
JP12
JP13
JP14
JP4 JP5
JP6 JP7 JP8 JP9
J31

SQ578 3-1
3Installation Preview
Before you install the SQ578 mainboard into the system chassis you may find it convenient
to first configure the mainboard hardware. This section describes how to configure the
jumper settings, install memory modules, and how to attach the various system components.
Before using your computer you must review the following 7 steps:
1. Jumper settings
2. Installation of DRAM modules (SIMM or DIMM)
3. Installation of the CPU
4. Installation of expansion cards
5. Installation of IDE, I/O, VGA cables(Option) connection., and Power Supply connection
6. Installation of the Power Core to the System.
7. Setup of the system BIOS software
WARNING: When handling the system upgrade or plug in additional Add-On Card, please
be sure your System is Power Off.
3.1 Jumper Settings
You can configure the hardware options by setting jumpers on the mainboard. A jumper is a
set of two or more metal pins in a plastic base attached to the mainboard. A plastic “jumper
cap” with a metal (conductive) plate inside fits over two pins to create an electrical contact
or short between them. This contact establishes a hardware setting and is referred to as a
“closed” jumper setting.
Some jumper have two pins while others may have three or more. Jumpers are sometimes
combined into sets called jumper blocks where all the jumpers in the block must be set
together to establish a hardware setting. In this manual, the jumper settings will be
described graphically using a triangle (s) always marking pin 1. Those jumpers with two
pins will be shown as closed or open. A jumper is closed by placing the plastic jumper cap
over the two jumper pins and is opened by removing the jumper cap. Some jumpers are
oriented vertically and others horizontally with pin 1 marked as (s=P1).

SQ578
3-2
3.1.1 Jumpers, Jumper caps and Jumper blocks
Jumper cap 2-pin jumper 3-pin jumper Jumper block
3.1.2 Setting 3-pin jumpers
Jumper Pins 1 & 2 are closed with a jumper cap
Jumper Pins 2 & 3 are closed with a jumper cap
3.1.3 Setting 2-pin jumpers
This jumper is closed with the jumper cap placed over 2 pins
This jumper is open with the jumper cap removed from the 2 pins
WARNING: Some pins are used for connectors or power sources. These are clearly marked
separately from the jumpers listed in “Mainboard Layout”. Any improper placing of jumper
caps over these connectors will result in damage to your mainboard
3.1.4 Configuration Jumpers
Jumpers
1) JP10, JP11, JP12, JP13, JP14, JP15, JP16 Processor voltage selection
2) JP4, JP5, JP6, JP7, JP8,JP9 Processor/System speed setting
3) JP1 CMOS Selection
4) JP3,JP17(Option) On board VGA Selection
5) JP18 CYRIX LINEAR BURST MODE
Selection
6) JP2 DIMM Vlotage Selection

SQ578 3-3
The Jumper located As below:
JP10
JP11
JP12
JP13
JP14 J30
J29 JP1 JP17
JP2
JP3
JP9JP8JP7JP6JP5JP4
JP18
JP16JP15
3.1.5 Processor Voltage Setting (JP10,JP11,JP12,JP13,JP14,JP15,
and JP16)
The Pentium P54C/P55C, Cyrix 6x86L/6X86MX, IDT-C6 , AMD-K5/K6 processors have
various voltage choices depending on the CPU suppliers. These jumpers provide a way to
select the different types of voltage .
Processor Voltage JP16 JP15 JP14 JP13 JP12 JP11 JP10
VCORE=3.52V
VI/O=3.52V
VCORE=3.38V
VI/O=3.38V
VCORE=3.2V
VI/O=3.3V
VCORE=2.9V
VI/O=3.3V
VCORE=2.8V
VI/O=3.3V
VCORE=2.1V
VI/O=3.3V

SQ578
3-4
3.1.6 Processor/System Speed setting (JP4, JP5, JP6, JP7, JP8,JP9)
The system speed depends upon the frequency of the CLOCK GENERATOR which is
determined by jumpers. These jumpers tell the system what speed to run at. Currently, this
mainboard speed range is from 75MHz to 300MHz. The CPU input frequency must match
the frequency of CLOCK GEN or it will cause the system to malfunction. For example,
setting a 90MHz CPU to run at 133MHz will cause the system to malfunction.
Intel /AMD
CPU setting JP9 JP8 JP7 JP6 JP5 JP4
75MHz
(50MHz x 1.5)
90MHz
(60MHz x 1.5)
100MHz
(66MHz x1.5)
120MHz
(60MHz x 2.0)
133MHz
(66MHz x 2.0)
150MHz
(60MHz x 2.5)
166MHz
(66MHz x 2.5)
200MHz
(66MHz x 3)
233MHz
(66MHz x 3.5)
266MHz
(66MHz x4)
300MHz
(66MHz x4.5)

SQ578 3-5
Cyrix CPU Setting
6X86 & 6X86L JP9 JP8 JP7 JP6 JP5 JP4
PR120+
(50MHz x 2.0)
PR133+
(55MHz x 2.0)
PR150+
(60MHz x 2.0)
PR166+
(66MHz x 2.0)
PR200+
(75MHz x 2.0)
Cyrix CPU Setting
6X86 MX JP9 JP8 JP7 JP6 JP5 JP4
PR133
(50MHz x 2.0)
PR133
(55MHz x 2.0)
PR150
(60MHz x 2.0)
PR150
(50MHz x 2.5)
PR166
(66MHz x 2.0)
PR166
(55MHz x2.5)

SQ578
3-6
Cyrix CPU Setting
6X86 MX JP9 JP8 JP7 JP6 JP5 JP4
PR166
(50MHz x3.0)
PR166
(60MHz x 2.5)
PR200
(75MHz x 2.0)
PR200
(55MHz x 3.0)
PR200
(66MHz x 2.5)
PR200
(60MHz x3.0)
PR233
(75MHz x 2.5)
PR233
(66MHz x 3.0)
PR266
(66MHz x 3.5)
PR266
(75MHz x3.0)

SQ578 3-7
IDT-C6
CPU setting JP9 JP8 JP7 JP6 JP5 JP4
150MHz
(50MHz x 3.0)
150MHz
(75MHz x 2.0)
180MHz
(60MHz x3.0)
200MHz
(66MHz x3.0)
3.1.7 Clear CMOS (JP1)
The SQ578 has a Jumper JP1, which allows you to clear the CMOS memory, the CMOS
memory maintains the system configuration information. Make sure this jumper is put on
Pin1 and Pin2 for normal operation.
Normal operation
Close for CMOS
memory clear

SQ578
3-8
3.1.8 On Board VGA (JP3 and JP17) (Option)
The SQ578 has two jumpers JP3 and JP17, which allow you to Enable or Disable On board
VGA.
JP3 JP17
DISABLE
ENABLE
3.1.9 Cyrix Linear Burst MODE (JP18)
The SQ578 has a jumper JP18, which allow you to Enable L2 cache, running at linear brust
Mode for Cyrix CPU. Make sure this jumper is open for normal operation for other kind of
processors.
Interleaved
Burst
Linear
Burst
3.1.10 DIMM Vlotage (JP2)
The SQ578 has a jumper JP2 which allows you to set the Operation Vlotage for DIMM
module. Make sure this jumper is put on Pin2 and 3 for normal operation.
5 V

SQ578 3-9
3 V
3.2 Installation of DRAM modules (SIMM or DIMM)
3.2.1 SIMM (Single Inline Memory Module)
You can configure the system memory size in a variety of ways by using different
combinations of the four 72-pin DRAM SIMM. The memory must be 70ns (nanoseconds) or
faster using either Fast Page Mode or Extended Data Output (EDO) types. The memory
table below shows the different memory size combinations available. Please pay attention to
the following restrictions :
1) You must use one pair of sockets at a time in sequence ( i.e. SIMM1 and SIMM2, or all
four sockets at once).
2) Each pair of modules must be the same size and speed and may be single sided or
double-side. Module sizes: Single-side SIMMs: 4MB, 8MB, 16MB; Double-side
SIMMs: 8MB, 32MB, 64MB
3.2.2 SIMM Combinations
Total Memory (Slot 1-4) Bank A (Slot 1 & 2) Bank B (Slot 3 & 4)
8MB 4MBx2 None
16MB 8MBx2 None
32MB 16MBx2 None
64MB 32MBx2 None
16MB 4MBx2 4MBx2
24MB 4MBx2 8MBx2
40MB 4MBx2 16MBx2
72MB 4MBx2 32MBx2
24MB 8MBx2 4MBx2
32MB 8MBx2 8MBx2
48MB 8MBx2 16MBx2
80Mb 8MBx2 32MBx2
40MB 16MBx2 4MBx2
48MB 16MBx2 8MBx2
64MB 16MBx2 16MBx2
96MB 16MBx2 32MBx2
72MB 32MBx2 4MBx2
80MB 32MBx2 8MBx2
96MB 32MBx2 16MBx2

SQ578
3-10
Total Memory (Slot 1-4) Bank A (Slot 1 & 2) Bank B (Slot 3 & 4)
128MB 32MBx2 32MBx2
128MB 64MBx2 None
256MB 64MBx2 64MBx2
3.2.3 Installation Procedure for SIMM
Insert SIMM into the
SIMM sockets at a 45
degree angle.
1) PIN1 of the SIMM must match with the PIN1 of the SIMM socket.
2) The module will only insert into the socket one way. An orientation cut-out will
prevent you from inserting it the wrong way.
3) Insert the SIMM into the SIMM socket at a 45 degree angle. If pin 1 of the SIMM does
not line up with pin 1 of the socket, the SIMM will not insert into the socket. After
inserting the SIMM module completely into the socket, push the SIMM module into a
vertical position.
4) The module should click into place with the retaining clips at each end of the socket
snapping behind the module to secure it.
5) To release the memory module push both retaining clips outwards and carefully rock
the module forward.
IMPORTANT: Do not use SIMM that use an extra TTL chip to convert the memory
module from asymmetric to symmetric.
3.2.4 DIMM (Dual Inline Memory Modules)
The SQ578 mainboard features two 168-pin DIMM sockets with each supporting 8MB to
128MB of SDRAM/EDO using 1MBx64, 2MBx64, 4MBx64 and 8MBx64 DIMM
(Asymmetrical single and double sided). The DRAM interfaces on a 64-bit wide, data path.
Also supported is 3.3 or 5 volts 66.67Mhz unbuffered Synchronous DRAM (SDRAM) and
3.3V or 5V volts 60ns or faster unbuffered EDO DRAM. The EDO DRAM and SDRAM are
defined below.

SQ578 3-11
3.2.5 DIMM Combination
Total Memory (DIMM1 and DIMM2) DIMM1 DIMM2
8MB 8MB Empty
16MB 8MB 8MB
16MB 16MB Empty
32MB 16MB 16MB
32MB 32MB Empty
64MB 32MB 32MB
64MB 64MB Empty
128MB 64MB 64MB
128MB 128MB Empty
256MB 128MB 128MB
3.2.6 Installation Procedure for DIMM
Insert DIMM into the
DIMM sockets at a 90
degree angle.
1) Pin of the DIMM must match with pin 1 of the DIMM socket.
2) The module will only insert into the socket one way. An orientation cut-out will prevent
you from inserting it the wrong way.
3) Insert the DIMM into the DIMM socket at a 90 degree angle. If pin 1 of the DIMM
does not line up with pin 1 of the socket, the DIMM will not insert into the socket.
After inserting the DIMM completely into the socket, push up on the socket latches
securing the DIMM into place.
4) To release the memory modules, push both latches down and carefully rock the module
forward

SQ578
3-12
Important: Do not use DIMM which use an extra TTL to convert the memory module from
asymmetric to symmetric.
3.3 Installation of the CPU
The SQ578 comes with a 321-pin ZIF socket 7 for installing the CPU. The Socket 7 will also
support future Pentium up-grade processors. It is strongly recommended that a heatsink and
CPU cooling fan be used to prevent the CPU from overheating. (Tip) Applying a thermal
jelly between the CPU and the heatsink/fan will help cool the CPU.
To install a CPU, remember to take the following precautions against static electric
discharge. The basic procedure is as follows:
NOTICE: When installing the CPU into the CPU socket, be sure that PIN 1 of the CPU is
in the same corner as PIN 1 of socket. The CPU is an extremely sensitive electrical
component and can be easily damaged by static electricity.
IMPORTANT: you must set jumpers JP10,JP11,JP12,JP13,JP14,JP15,JP16 to correct
CPU Voltage.
1) Turn off your system and disconnect the power source.
2) Remove the existing CPU from the ZIF socket by pulling the ZIF lever upwards at a 90
degree angle.
3) Insert the CPU with the correct orientation as shown below. Use the notched (white
dot) corner of the CPU as your guide. The notch in the corner of the CPU should
correspond with PIN 1 of the ZIF socket (Notice: Pin 1 is the blank corner of the ZIF
socket with one hole missing).
4) Once the CPU is inserted close the socket’s lever.
WARNING: Without a fan, the CPU can overheat and will cause damage to both the CPU
and the SQ578 mainboard.