Pentium SQ578, SQ578A02 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 anti­static 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, anti­static 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

1 INTRODUCTION......................................................................................1-1

1.1 OVERVIEW ............................................................................................1-1

1.2 HOW TO USE THIS MANUAL....................................................................1-1

1.3 ITEM CHECKLIST....................................................................................1-2

2 KEY FEATURES.......................................................................................2-1

2.1 PRODUCT SPECIFICATION......................................................................2-1

2.2 MAINBOARD LAYOUT..............................................................................2-2

3 INSTALLATION 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

4 BIOS 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

5 VGA INSTALLATION(OPTION)............................................................5-1

5.1 INTRODUCTION......................................................................................5-1

5.2 SOFTWARE SUPPORT...............................................................................5-4

SQ578

1 Introduction

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.

þ The SQ578 mainboard
þ This SQ578 user‘s manual
þ 1 IDE ribbon cable
þ 1 floppy ribbon cable
þ 1 parallel ribbbon cable and PS/2 mouse cable with mounting bracket
þ 2 serial ribbbon cable attached to a mounting bracket

o 1 VGA ribbon cable attached to a mounting bracket(optional)
q USB (2 port) cable with bracket (optional)
q Infrared (IrDA) module with ribbon cable (optional)

SQ578

2 Key Features

2.1 Product Specification

² Processor: 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.

² L2 Cache: Onboard 256KB or 512KB Pipeline Burst SRAM
² SIMM (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.

² DIMM (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.

² Chipset: 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.

² Super 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.

² Expansion Slots: Three 32-bit PCI and Four 16-bit ISA expansions slots.
² Super 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.

² Keyboard and PS/2 Mouse: Onboard Standard AT Keyboard and PS/2 Mouse Port
² PCI 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.

² Universal Serial Bus (USB): Two standard USB interface supports up to 48MHz and

127 peripheral devices.

² PCI BIOS: Win 95 Plug and Play with Green power saving support, APM 1.2 and

DMI Support.

² Mechanical: 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

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3-1

3 Installation 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).

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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

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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

V

CORE

=3.52V

V

I/O

=3.52V

V

CORE

=3.38V

V

I/O

=3.38V

V

CORE

=3.2V

V

I/O

=3.3V

V

CORE

=2.9V

V

I/O

=3.3V

V

CORE

=2.8V

V

I/O

=3.3V

V

CORE

=2.1V

V

I/O

=3.3V

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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)

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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)

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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)

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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

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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

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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.

SQ578

3-13

3.4 Installation of Expansion Slots

3.4.1 ISA & PCI Slots

There are two types of ISA expansion cards, design-Legacy and PnP (Plug & Play). For
Legacy cards you must set the cards’ jumpers manually. For Plug & Play cards, your system
will adjust the IRQs automatically. You can verify the IRQ allocation either by using
Microsoft’s Diagnostic (MSD.EXE) utility which is in the Windows directory or through the
Windows 95 resources menu.

16-bit ISA Slot

32-bit PCI Slot

3.4.2 Installation Procedure

The SQ578 has 7 expansion slots on-board. Four are 16-bit ISA Bus expansion connectors
and Three are 32-bit PCI expansion slots. All three PCI expansion slots accept PCI Bus
master cards and fully supported by PCI 2.1 specifications.

To install expansion cards, please read the expansion card’s documentation, which shipped
with the expansion card, for instructions.

NOTICE: Some expansion cards require an IRQ to work and may cause a conflict. There
are total of 16 IRQs but only 6 are free for expansion cards. In case of a conflict please
contact the system manufacturer for technical support.

3.5 Installation of IDE, I/O cables connection

3.5.1 Primary IDE Connector (40-pin block) (J28)

This connector supports two primary channel IDE devices via a ribbon cable. When two
IDE devices are installed using the primary IDE connector make sure that the second IDE
device is set to slave mode as indicated in the device’s manual.

SQ578

3-14

Pin Signal Name Pin Signal Name

1 Reset IDE 2 Ground
3 Host Data 7 4 Host Data 8
5 Host Data 6 6 Host Data 9
7 Host Data 5 8 Host Data 10
9 Host Data 4 10 Host Data 11
11 Host Data 3 12 Host Data 12
13 Host Data 2 14 Host Data 13
15 Host Data 1 16 Host Data 14
17 Host Data 0 18 Host Data 15
19 Ground 20 Key
21 DDRQ0 (DDRQ1) 22 Ground
23 I/O Write # 24 Ground
25 I/O Read # 26 Ground
27 IOCHRD 28 +5V V pull-up
29 DDACK0 (DDACK1) # 30 Ground
31 IRQ14 (IRQ15) 32 Reserved
33 Addr 1 34 Reserved
35 Addr 0 36 Addr 2
37 Chip Select 1P (1S) # 38 Chip Select 3P (3S)
39 Activity # 40 Ground

WARNING: When you connect a ribbon cable to these ports, you must orient the cable
connector so that the PIN 1 edge of the cable is at the PIN 1 end of the on-board connector.

3.5.2 Secondary IDE Connector (40-pin block) (J26)

This connector supports two secondary channel IDE devices or 120MB Floppy drive(LS-

120) via a ribbon cable. When two IDE devices are installed using the secondary IDE
connector make sure that the second IDE device is adjusted to slave mode as instructed in
the device’s manual.

Pin Signal Name Pin Signal Name

1 Reset IDE 2 Ground
3 Host Data 7 4 Host Data 8
5 Host Data 6 6 Host Data 9
7 Host Data 5 8 Host Data 10
9 Host Data 4 10 Host Data 11
11 Host Data 3 12 Host Data 12
13 Host Data 2 14 Host Data 13
15 Host Data 1 16 Host Data 14
17 Host Data 0 18 Host Data 15

19

Ground

20

Key

21 DDRQ0 (DDRQ1) 22 Ground
23 I/O Write # 24 Ground
25 I/O Read # 26 Ground
27 IOCHRD 28 +5V V pull-up
29 DDACK0 (DDACK1) # 30 Ground
31 IRQ14 (IRQ15) 32 Reserved
33 Addr 1 34 Reserved
35 Addr 0 36 Addr 2
37 Chip Select 1P (1S) # 38 Chip Select 3P (3S)
39 Activity # 40 Ground

WARNING: When you connect a ribbon cable to these ports, you must orient the cable
connector so that the PIN 1 edge of the cable is at the PIN 1 end of the on-board connector.

3.5.3 Floppy Drive Connector (34-pin block) (J21)

The FDC sub-system can control three types (1.2, 1.44, and 2.88MB) of floppy drivers or
compatible tape drives. Connection to floppy drives is via a header (J21). The floppy disk
interface includes 48mA drivers and Schmit inputs on the drive interface.

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3-15

Pin Signal Name Pin Signal Name

1 Ground 2 DENSEL
3 Ground 4 TP
5 Key 6 FDENIN#
7 Ground 8 FDINDX#
9 Ground 10 FDM00#
11 Ground 12 FDDS1#
13 Ground 14 FDDS0#
15 Ground 16 FDM01#
17 MSEN1 18 FDDIR#
19 Ground 20 FDSTEP#
21 Ground 22 FDWD#
23 Ground 24 FDWE#
25 Ground 26 FDTRK0#
27 MSEN0 28 FDWPD#
29 Ground 30 FDRDATA#
31 Ground 32 FDHEAD#
33 Ground 34 DSKCHG#

WARNING: When you connect a ribbon cable to this port, you must orient the cable
connector so that the PIN 1 edge of the cable is at the PIN 1 end of the on-board port.

3.5.4 Universal Serial Bus (USB) Port(J6)

This SQ578 mainboard has two USB on-board header. USB devices provide a more
convenient operating environment and improve data transferring capacity. True Plug-and­Play, this new bus technology will support over 127 different peripherals through a Hub.

Pin Signal Name (USB1) Pin Signal Name (USB2)

1 +5V 5 +5V
2 USB0- 6 USB1­3 USB0+ 7 USB1+
4 Ground 8 Ground

WARNING: When you connect a ribbon cable to these ports, you must orient the cable
connector so that the PIN 1 edge of the cable is at the PIN 1 end of the on-board connector.

3.5.5 Power Input Connector (12-pin block) (J18)

This connector supports a standard AT power supply. When connecting, make sure the lock
key matches the hook attached on a power supply cable. The power cord should be
unplugged when you connect it.

3.5.6 Keylock and Power_On LED Connector(5-Pin)(Pin1-5of J31)

The SQ578 supports one straight 5 pin header for connecting to front pannel keylock switch
and Power LED indicator.

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3-16

Pin Signal Name

1 Ground
2 Keyboard
3 LED­4 No Connect
5 LED+

1

13

24

12

3.5.7 HDD LED Connector (2-pin)(Pin 12 and 24 of J31)

The SQ578 supports one straight 4 pin header for connecting to front pannel Hard Disk
activity LED indicator.

Pin Signal Name

12 LED­24 LED+

1

13

12

24

3.5.8 Reset Switch Connector (2-pin) (Pin 21 and 22 of J31)

This connector supports the front pannel case-mounted reset. It is advised that the reset
switch be used for rebooting the system in order to extend the life of the system’s power
supply.

Pin Signal Name

21 Reset
22 Ground

1

13

24

12

3.5.9 Speaker Connector (4-pin) (Pin 7-10 of J31)

A 1x4 straight header is available to drive a chassis-mounted speaker if desired.

Pin Signal Name

7 Speaker­8 No connect
9 No connect
10 Speaker+

1

13

24

12

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3.5.10 IrDA connector (6-pin) (J34)

The SQ578 mainboard offers an IrDA function. The case must reserve space for the IR
module if you want to use the IrDA function. This connector supports optional wireless
transmission and reception of infrared data. The module mounts in a small opening on the
system case that supports this feature. The efficient distance is 100cm and the transfer rate is
115,200 bits/sec.

Pin Signal Name

1 +5V
2 No connect
3 IrRX
4 Ground
5 IrTX

IMPORTANT: You must configure this feature through the BIOS. The IrDA function is
supported by the mainboard via a 5-pin connector, ribbon cable and IR Module.

3.5.11 Fan Connector (J30)

This connector supports the power output for CPU fan.

Pin Signal Name

1 Fan_On
2 +12V

3.5.12 PS/2 Keyboard (J1) and Mouse Connector (J4)

The SQ578 mainboard offers 1 PS/2 Keyboard and 1 PS/2 Mouse port as below.

PS/2 Mouse

Keyboard

Pin Signal Name

1 DATA
2 No connect
3 Ground
4 +5V (Fused)
5 Clock

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3.5.13 Parallel Port Connector (26-pin Block) (J22)

The motherboard includes a bi-directional parallel port (EPP/ECP compatible). The parallel
port is capable of being disabled or remapped to either the secondary LPT address or the
primary LPT address through BIOS if other parallel ports are installed. The parallel port
contains 12mA source output drivers on the drive interface and incorporates Chip Protect
circuitry for protection against damage due to printer’s power being on.

Pin Signal Name Pin Signal Name

1 STROBE# 14 AUTOFD#
2 DATA BIT 0 15 FAULT#
3 DATA BIT 1 16 PINIT#
4 DATA BIT 2 17 SLCT IN#
5 DATA BIT 3 18 Ground
6 DATA BIT 4 19 Ground
7 DATA BIT 5 20 Ground
8 DATA BIT 6 21 Ground
9 DATA BIT 7 22 Ground
10 ACK# 23 Ground
11 BUSY 24 Ground
12 PEERROR 25 Ground
13 SLCTt

Parallel Port

3.5.14 Serial Port (J5/J9)

The SQ578 has two serial ports. The electrical characteristics are compliant with the EIA­232-D Serial Communications Specifications. The serial ports may be remapped above other
installable serial ports or disabled through the BIOS.

Pin Signal Name

1 DCD
2 TXD
3 RXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI

COM1

COM2

3.5.15 VGA (J27) & Feature Connector (J25) (option)

This SQ578 mainboard has Super VGA onboard. This connector supports the VGA
output via a ribbon cable. Connect the VGA ribbon cable to this connectors and mount
the bracket to the back of the case.

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3.5.16 Green LED (J33)

This connector supports the case-mounted Green LED.

Pin Signal Name

1 LED+
2 LED-

3.5.17 EXT-SMI Switch (2-Pin) (J32)

This connector supports the case-mounted suspend switch allowing you to manually place
the system into a suspend mode or "Green" mode. During Green mode, the system activity
will be decreased to save energy when the system is not in use. If you want to use this
feature, the "Suspend Switch" in the Power Management Setup of the BIOS should be
Enabled.

Pin Signal Name

1 EXT-SMI
2 Ground

3.5.18 EXT Battery Connector (J29)

This connector allows you to install the auxiliary battery, while the onboard battery is
expired.

Pin Signal Name

1

+3.3V∼ +3.9V

2 None Use
3 Ground
4 Ground

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4 BIOS Setup

The SQ578 mainboard uses an AMI BIOS, which is stored in a Flash EEPROM and
which can be upgraded using a floppy disk-based program. The BIOS has a built-in
Setup program that allows users to modify the basic system configuration setting. The
settings are then stored in a dedicated batter-backed memory, called CMOS RAM , that
retains the information when the power is turned off. The BIOS provides critical low­level support for the system central processing, memory, and I/O subsystems. The AMI
BIOS has been customized by adding important, but nonstandard, features such as virus
and password protection, power management, and detailed fine-tuning of the chipset
controlling the system. The rest of this manual is intended to guide you through the
process of configuring your system using Setup.

4.1 Starting Setup

The AMI BIOS is immediately activated when you first turn on the computer. The
BIOS reads system configuration information in CMOS RAM and begins the process of
checking out the system and configuring it through the power-on self test (POST).
When these preliminaries are finished, the BIOS seeks an operating system on the of
the data storage devices (hard drive, floppy drive, etc.). The BIOS launches the
operating system and hands control of system operations to it.

To start Setup, press the <Del> key some time before or while a message similar to this
appears briefly at the bottom of the screen during POST:

Press DEL to enter SETUP

If the message disappears before you respond and you still wish to enter Setup, reboot
the system to try again by turning the system OFF then ON or pressing the “RESET”
button on the system case. You may also restart by simultaneously pressing <Ctrl>,
<Alt>, and <Delete> keys. If you do not press the keys at the correct time and the
system does not reboot, an error message will be displayed at the bottom of the screen
and you will again be asked to,

Press F1 to continue, DEL to enter SETUP

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4.1.1 Setup Keys

These Keys help you navigate in Setup:

Keystroke Function

<Tab> Move to the next window or field.
→, ←, ↑, ↓

Move to the next field to the right, left, above, or below.

+ Increments of value.

- Decrements of value.
<Esc> Closes the current operation and return to previous level.
<PgUp> Modify Value (item) up.
<PgDn> Modify Value (item) down.
<Alt> <H> Access a help window.
F2/F3 Change Color.
Alphabetic
keys

A to Z are used in the Virtual Keyboard, and are not case-

sensitive.
Numeric
keys

0 to 9 are used in the Virtual Keyboard and Numeric

Keypad.

4.1.2 Getting Help

AMI BIOS Setup Provides Help screens for Advanced Setup, Chipset Setup Power
Management Setup, and Perpheral Setup.

4.1.3 In Case of Porblems

If after making and saving system changes with Setup, you discover that your computer
no longer is able to boot, the AMI BIOS supports an override to the CMOS settings that
resets your system to its default configuration.

You can invoke this override by immediately pressing Insert; when you restart your
computer You can restart by either using the ON/OFF switch, the RESET button or by
pressing Ctrl-Alt-Delete.

The best advice is to alter only settings that you thoroughly understand. In particular, do
not change settings in the Chipset screen without a good reason. The Chipset defaults
have been carefully chosen by AMI or your system manufacturer for the best
performance and reliability. Even a seemingly small change to the Chipset setup may
causing the system to become unstable.

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4.2 Main Setup Menu

When you enter the AMI BIOS CMOS Setup Utility, a Main Menu (Figure 1) appears
on the screen. The Main Menu allows you to select from several Setup functions and
two exit choices. Use the arrow keys to select among the items and press Enter to
accept and enter the sub-menu.
A brief description of each highlighted selection appears at the bottom of the screen.

Figure 1

Following is a brief summary of each Setup category.

Type Description

Standard CMOS Options in the original PC AT-compatible BIOS.
Advanced CMOS AMI enhanced BIOS options.
Advanced Chipset Option specific to your system chipset.
Power Management Advanced Power Management ( APM ) options.
PCI/Plug and Play Plug and Play standard and PCI Local Bus configuration

options.

Peripheral I/O subsystems that depend on the integrated peripherals

controller in your system.
Auto-Detect Hard
Disks

Automatically detect and configure IDE hard disk

parameters.
Change Supervisor
Password

Change, set, or disable s password. The supervisor

password permits access to Setup.
Auto Configuration
with Optimal
Setting

Setup defaults are factory settings for optimal-

performance system operations.

Save Setting and
Exit

Save settings in nonvolatile CMOS RAM and exit Setup

Exit Without
Saving

Abandon all changes and exit Setup.

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4.3 Standard CMOS Setup Menu

In the Standard CMOS Menu (Figure2) you can set the system clock and calendar,
record disk drive parameters and the video subsystem type, and select the type of errors
that stop the BIOS POST.

Figure 2

4.3.1 Date/Time

Select the Standard option. Select the Date and Time icon. The current values for each
category are displayed. Enter new values through the keyboard.

4.3.2 Floppy Drive A: and B:

Move the cursor to these fields via - and ¯ and select the floppy type. The settings are

360 KB 5¼ inch, 1.2 MB 5¼ inch, 720 KB 3½ inch, 1.44 MB 3½ inch, or 2.88 MB 3½
inch.

4.3.3 Hard Disk

Pri Master, Pri Slave, Sec Master, Sec Slave Select one of these hard disk drive
icons to configure the hard disk drive named in the option. Select Auto from the drive
parameters screen to let AMIBIOS automatically configure the drive. A screen with a
list of drive parameters appears. Click on OK to configure the drive.

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Drive

Type

How to Configure

SCSI

Select Type. Select Not Installed in the drive parameter screen. The
SCSI drivers provided by the SCSI drive or SCSI host adapter
manufacturer should allow you to configure the SCSI drive.

IDE

Select Detect IDE from the AMIBIOS Setup main screen to let
AMIBIOS determine the parameters. AMIBIOS automatically
configures the correct IDE parameters for all IDE hard disk drives
attached to the primary and secondary IDE channels.

To manually set IDE drive parameters:

Select LBA/Large Mode. Select On if the drive has a capacity greater
than 540 MB.
Select Block Mode. Select On to allow block mode data transfers.

Make sure the IDE drive supports block mode. Data may be destroyed
if block mode is selected but the IDE drive does not support block
mode.

Select 32-Bit Transfer. Select On to allow 32-bit data transfers.
Select the PIO Mode. It is best to select Auto to allow AMIBIOS to
determine the PIO mode. If you select a PIO mode that is not
supported by the IDE drive, the drive will not work properly. If you
are absolutely certain that you know the drive PIO mode, select PIO
mode 0 - 5, as appropriate.

CD-

ROM

Select Type. Select CDROM. Click on OK when AMIBIOS displays

the drive parameters.
Standar
d MFM

Drive

Select Type. You must know the drive parameters. Select the drive

type that exactly matches your drive parameters.

Non­Standar
d MFM

Drive

Select Type. If the drive parameters do not match the drive parameters
listed for drive types 1 - 46, select User and enter the correct hard
disk drive parameters.

Entering Drive Parameters You can also enter the hard disk drive parameters. The
drive parameters are:

Parameter Description

Type The number for a drive with certain identification

parameters.

Cylinders The number of cylinders in the disk drive.

Heads The number of heads.

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Write

Precompensation

The actual physical size of a sector gets progressively
smaller as the track diameter diminishes. Yet each
sector must still hold 512 bytes. Write precompensation
circuitry on the hard disk compensates for the physical
difference in sector size by boosting the write current
for sectors on inner tracks. This parameter is the track
number on the disk surface where write
precompensation begins.

Landing Zone This number is the cylinder location where the heads

normally park when the system is shut down.

Sectors The number of sectors per track. MFM drives have 17

sectors per track. RLL drives have 26 sectors per track.
ESDI drives have 34 sectors per track. SCSI and IDE
drives have even more sectors per track.

Capacity The formatted capacity of the drive is the number of

heads times the number of cylinders times the number
of sectors per track times 512 (bytes per sector).

Hard Disk Drive Types

Type Cylinders Heads Write

Precompensation

Landing

Zone

Sectors Capacity

1 306 4 128 305 17 10 MB
2 615 4 300 615 17 20 MB
3 615 6 300 615 17 31 MB
4 940 8 512 940 17 62 MB
5 940 6 512 940 17 47 MB
6 615 4 65535 615 17 20 MB
7 462 8 256 511 17 31 MB
8 733 5 65535 733 17 30 MB

9 900 15 65535 901 17 112 MB
10 820 3 65535 820 17 20 MB
11 855 5 65535 855 17 35 MB
12 855 7 65535 855 17 50 MB
13 306 8 128 319 17 20 MB
14 733 7 65535 733 17 43 MB
16 612 4 0 663 17 20 MB
17 977 5 300 977 17 41 MB
18 977 7 65535 977 17 57 MB
19 1024 7 512 1023 17 60 MB
20 733 5 300 732 17 30 MB
21 733 7 300 732 17 43 MB
22 733 5 300 733 17 30 MB
23 306 4 0 336 17 10 MB
24 925 7 0 925 17 54 MB
25 925 9 65535 925 17 69 MB
26 754 7 754 754 17 44 MB
27 754 11 65535 754 17 69 MB
28 699 7 256 699 17 41 MB
29 823 10 65535 823 17 68 MB
30 918 7 918 918 17 53 MB

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31 1024 11 65535 1024 17 94 MB
32 1024 15 65535 1024 17 128 MB
33 1024 5 1024 1024 17 43 MB
34 612 2 128 612 17 10 MB
35 1024 9 65535 1024 17 77 MB
36 1024 8 512 1024 17 68 MB
37 615 8 128 615 17 41 MB
38 987 3 987 987 17 25 MB
39 987 7 987 987 17 57 MB
40 820 6 820 820 17 41 MB
41 977 5 977 977 17 41 MB
42 981 5 981 981 17 41 MB
43 830 7 512 830 17 48 MB
44 830 10 65535 830 17 69 MB
45 917 15 65535 918 17 114 MB
46 1224 15 65535 1223 17 152 MB

USER-DEFINED HARD DRIVE - Enter user-supplied
parameters.

4.3.4 Boot Sector Virus Protection

When enabled, you receive a warning message if a program (specifically, a virus)
attempts to write to the boot sector or the partition table of the hard disk drive. You
should then run an anti-virus program. Keep in mind that this feature protects only the
boot sector, not the entire hard drive.

NOTE: Many disk diagnostic programs that access the boot sector table can trigger the
virus warning message. If you plan to run such a program, we recommend that you first
disable the virus warning.

4.3.5 Memory

You cannot change any values in the Memory fields; they are only for your information.
The fields show the total installed random access memory (RAM) and amounts
allocated to base memory, extended memory. RAM is counted in kilobytes (KB:
approximately one thousand bytes) and megabytes (MB: approximately one million
bytes).

RAM is the computer’s working memory, where the computer stores programs and data
currently being used, so they are accessible to the CPU. Modern personal computers
may contain up to 64MB, 128MB, or more.

Base Memory
Typically 640 KB. Also called conventional memory. The DOS operating system and

conventional applications use this area.
Extended Memory
Above the 1-MB boundary. Early IBM personal computers could not use memory

above 1 MB, but current PCs and their software can use extended memory.

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4.4 BIOS Features Setup Menu

This screen (Figure 3) contains industry-standard options additional to the core PC AT
BIOS. This section describes all fields offered by AMI Software in this screen. Some
fields may vary from those in your Setup program. Your system board designer may
omit or modify some fields.

Figure 3

4.4.1 1st Boot Device

This option sets the type of device for the first boot drives that the AMIBIOS attempts
to boot from after AMIBIOS POST completes. The settings are Disabled, Floppy,
Network, Floptical, SCSI, CDROM, IDE-0, IDE-1, IDE-2, or IDE-3. The Optimal
default settings are Floppy.

4.4.2 2nd Boot Device

This option sets the type of device for the second boot drives that the AMIBIOS
attempts to boot from after AMIBIOS POST completes. The settings are Disabled,
Floppy, Floptical, CDROM, or IDE-0. The Optimal default settings are IDE-0.

4.4.3 Quick Boot

Set this option to Enabled to instruct AMIBIOS to boot quickly when the computer is
powered on. This option replaces the old Above 1 MB Memory Test Advanced Setup
option. The settings are:

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Setting Description

Disabled

AMIBIOS test all system memory. AMIBIOS waits up to 40
seconds for a READY signal from the IDE hard disk drive.
AMIBIOS waits for .5 seconds after sending a RESET signal
to the IDE drive to allow the IDE drive time to get ready
again. AMIBIOS checks for a <Del> key press and runs
AMIBIOS Setup if the key has been pressed.

Enabled

AMIBIOS does not test system memory above 1 MB.
AMIBIOS does not wait up to 40 seconds for a READY
signal from the IDE hard disk drive. If a READY signal is
not received immediately from the IDE drive, AMIBIOS
does not configure that drive. AMIBIOS does not wait for .5
seconds after sending a RESET signal to the IDE drive to
allow the IDE drive time to get ready again.
You cannot run AMIBIOS Setup at system boot, because
there is no delay for the Hit <Del> to run Setup message.

4.4.4 Boot Up Num Lock

Set this option to Off to turn the Num Lock key off when the computer is booted so you
can use the arrow keys on both the numeric keypad and the keyboard. The settings are
On or Off. The default settings are On.

4.4.5 Floppy Drive Swap

Set this option to Enabled to permit drives A: and B: to be swapped. The settings are
Enabled or Disabled. The default settings are Disabled.

4.4.6 Floppy Drive Seek

Set this option to Enabled to specify that floppy drive A: will perform a Seek operation
at system boot. The settings are Disabled or Enabled. The default settings are Disabled.

4.4.7 PS/2 Mouse Support

Set this option to Enabled to enable AMIBIOS support for a PS/2-type mouse. Pins 2-3
of the PS/2 Mouse Selector jumper on the motherboard must be shorted together to
enable PS/2 mouse support. The settings are Enabled or Disabled. The default settings
are Enabled.

4.4.8 Typematic Rate

This option sets the rate at which characters on the screen repeat when a key is pressed
and held down. The settings are Slow or Fast. The default settings are Fast.

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4.4.9 Primary Display

This option configures the type of monitor attached to the computer. The settings are

Mono, CGA40x25, CGA80x25, VGA/EGA, or Absent. The default settings are
VGA/EGA.

4.4.10 Password Check

This option enables password checking every time the system boots or when you run
AMIBIOS Setup. If Always is chosen, a user password prompt appears every time the
computer is turned on. If Setup is chosen, the password prompt appears if AMIBIOS is
executed. See the Advanced Setup chapter for instructions on changing a password. The
defaults are Setup.

4.4.11 Boot To OS/2

Set this option to Enabled if running OS/2 operating system and using more than 64
MB of system memory on the motherboard. The settings are Enabled or Disabled. The
default settings are Disabled.

4.4.12 External Cache

This option sets the type of caching algorithm used for the L2 secondary (external)
cache memory. The settings are WriteBack, WriteThru, or Disabled. The default setting
is WriteBack .

When set to Enabled, the contents of the F0000h system memory segment can be read
from or written to cache memory. The contents of this memory segment are always
copied from the BIOS ROM to system RAM for faster execution. The settings are
Enabled or Disabled. The default setting is Enabled.

4.4.13 C000,16K Shadow & C400,16K Shadow

These options specify how the 32 KB of video ROM at C0000h is treated. The settings
are:

Setting Description

Disabled

The contents of the video ROM are not copied to RAM.

Enabled

The contents of the video ROM area from C0000h - C7FFFh
are copied (shadowed) from ROM to RAM for faster
execution.

Cached

The contents of the video ROM area from C0000h - C7FFFh
are copied from ROM to RAM and can be written to or read
from cache memory.

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4.4.14 C800,16K Shadow

§ D000,16K Shadow

§ D400,16K Shadow

§ D800,16K Shadow

§ DC00,16K Shadow

These options enable shadowing of the contents of the ROM area named in the option.
The ROM area not used by ISA adapter cards is allocated to PCI adapter cards. The
settings are:

Setting Description

Disabled

The contents of the video ROM are not copied to RAM.

Cached

The contents of the video ROM area from C0000h - C7FFFh
are copied from ROM to RAM and can be written to or read
from cache memory.

Enabled

The contents of the video ROM area from C0000h - C7FFFh
are copied (shadowed) from ROM to RAM for faster
execution.

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4.5 Chipset Features Setup Menu

Figure 4

4.5.1 SDRAM/EDO/FP DRAM Access Time

After power on, BIOS will detect the System Ram Type automatically and shows the
value in unit of n.s. behind detected items. Meanwhile, unused items will present
"None Used".

4.5.2 Memory Hole at 15M-16M

This option specifies the location of an area of memory that cannot be addressed on the
ISA bus. The settings are Disabled, 15 MB-16 MB, or 512KB-640KB. The default
settings are Disabled.

4.5.3 CYRIX Cache Burst Address

Operating the CPU in linear burst mode minimizes processor bus activity resulting in
higher system performance. The settings are Toggle or Linear. The default setting is
Toggle.

4.5.4 USB Function

Set this option to Enabled to enable USB (Universal Serial Bus) support. The settings
are Enabled or Disabled. The default settings are Disabled.

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4.5.5 ON Chip VGA (Option)

This item contains 2 settings, Enabled to enable OCV(On Chip VGA) and Disabled to
disable OCV. It will be automatically detected and disabled when a external VGA card
was installed. So you can no need to set this item. The default setting is Enabled.

4.5.6 VGA Shared Memory Size (Option)

Share memory size from system memory for VGA use. There are 8 settings, 0.5M, 1M,

1.5M, 2M, 2.5M, 3M, 3.5M, 4M. Default setting is 1M.

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4.6 Power Management Setup Menu

This category determines how much power consumption for system after selection
below items.

Figure 5

4.6.1 Power Management/APM

Enabled to enable the chipset power management and APM (Advanced Power
Management)features. The settings are Enabled or Disabled. Default setting is
Disabled.

4.6.2 Green PC Monitor Power State

Enabled to enable AMIBIOS support for the Intel InstantON specification. The settings
contains Enabled and Disabled. The default settings are Disabled.

4.6.3 Video Power Down Mode

This option specifies the power state that the video subsystem enters when AMIBIOS
places it in a power saving state after the specified period of display inactivity has
expired. The settings contains Standby, Suspend and Disabled. The default setting is
Disabled.

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4.6.4 Hard Disk Power Down Mode

This option specifies the power conserving state that the hard disk drive enters after the
specified period of hard drive inactivity has expired. The settings contains Disabled,
Standby and Suspend. The default setting is Disabled.

4.6.5 Standby Time Out (Minute)

This option specifies the length of a period of system inactivity while in Full power on
state. When this length of time expires, the computer enters Standby power state. The
settings are Disabled, 1 minute, up to 14 minute, in increments of 1 minute. The
default setting is Disabled.

4.6.6 Suspend Time Out (Minute)

This option specifies the length of a period of system inactivity while in Standby state.
When this length of time expires, the computer enters Suspend power state. The

settings are Disabled, 1 minute, up to 14 minute, in increments of 1 minute. The
default setting is Disabled.

4.6.7 Display Activity

When set to Monitor, this option enable s event monitoring on the video display. If set
to Monitor and the computer is in a power saving state, AMIBIOS watches for display
activity. The computer enters the Full On state if and activity occurs. AMIBIOS reloads
the Standby and Suspend timeout timers if display activity occurs. The settings contains
Monitor and Ignore. The default setting is Ignore.

4.6.8 Wake Up Events In Doze & Standby

There are 2 settings, Enabled and Disabled, in each following items. Users can set
Enabled or Disabled in following items in order to reload saved settings after being
waked up.

§ IDE Adapter 0 Master/Slave

§ IDE Adapter 1 Master/Slave

§ Serial Port 1 Access

§ Serial Port 2 Access

§ Parallel Port Access

§ IRQ 1-15 and NMI Access

§ Keyboard Port Access

§ Ring Active

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4.6.9 Power Down & Resume Events

When set to Monitor, these options enable event monitoring on the specified hardware
interrupt request line. If set to Monitor and the computer is in a power saving state,
AMIBIOS watches for activity on the specified IRQ line. The computer enters the Full
On state if any activity occurs. AMIBIOS reloads the Standby and Suspend timeout
timers if activity occurs on the specified IRQ line. The settings for each of these options
are Monitor or Ignore. The default setting is Ignore.

§ IRQ 1-15 and NMI Mask

§ IRQ3 (COM2/COM4)

§ IRQ4 (COM1/COM3)

§ IRQ5 (LPT2)

§ IRQ7 (LPT1)

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4.7 PCI / Plug and Play Setup

Choose PCI/Play and Play Setup from the AMIBIOS Setup screen to display the PCI
and Plug and Play Setup options, described below.

Figure 6

4.7.1 Plug and Play Aware O/S

Set this option to Yes to inform AMIBIOS that the operating system can handle plug
and Play (PnP) devices. The settings are No or Yes. The default settings are No.

4.7.2 Clear NVRAM

Set this option to yes to clear data stored in NVRAM each time in rebooting, and no to
keep the data stored in NVRAM whenever system rebooting.

4.7.3 PCI VGA Palette Snoop

When this option is set to Enabled, multiple VGA devices operating on different buses
can handle data from the CPU on each set of palette registers on every video device. Bit
5 of the command register in the PCI device configuration space is the VGA Palette
Snoop bit (0 is disabled). For example: if there are two VGA devices in the computer
(one PCI and one ISA) and:

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VGA Palette
Snoop Bit

Action

Disabled Data read and written by the CPU is only directed to the

PCI VGA device's palette registers.

Enabled Data read and written by the CPU is directed to the both

the PCI VGA device's palette registers and the ISA VGA
device palette registers, permitting the palette registers of
both devices to be identical.

This option must be set to Enabled if any ISA adapter card installed in
the system requires VGA palette snooping. The Optimal and Fail-Safe
default settings are Disabled.

4.7.4 PCI IDE BusMaster

Set this option to Enabled to specify that the IDE controller on the PCI bus has bus
mastering capability. The settings are Disabled or Enabled. The Optimal and Fail-Safe
default settings are Disabled.

4.7.5 Off Board PCI IDE Card

This option specifies if an off board PCI IDE controller adapter card is used in the
computer. You must also specify the PCI expansion slot on the motherboard where the
off board PCI IDE controller card is installed. If an off board PCI IDE controller is used,
the motherboard onboard IDE controller is automatically disabled. The settings are
Disabled, Auto, Slot1, Slot2, Slot3, Slot4, Slot5, or Slot6. If Auto is selected, AMIBIOS
automatically determines the correct setting. The Optimal and Fail-Safe default settings
are Auto. This option forces IRQ 14 and 15 to a PCI slot on the PCI local bus. This is
necessary to support non-compliant PCI IDE adapter cards.

4.7.6 Off Board PCI IDE Primary IRQ

This option specifies the PCI interrupt used by the primary IDE channel on the off
board PCI IDE controller. The settings are Disabled, Hardwired, INTA, INTB, INTC, or
INTD. The default setting is Disabled.

4.7.7 Off Board PCI IDE Secondary IRQ

This option specifies the PCI interrupt used by the secondary IDE channel on the off
board PCI IDE controller. The settings are Disabled, Hardwired, INTA, INTB, INTC, or
INTD. The default setting is Disabled.

4.7.8 Assign IRQ to PCI VGA Card

Assign the IRQ# for VGA card.

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4.7.9 PCI Slots IRQ Priority

These options specify the IRQ priority for PCI devices installed in the PCI expansion
slots. The settings are Auto, (IRQ) 3, 4, 5, 7, 9, 10, and 11, in priority order. The
default setting is Auto.

§ PCI Slot1 IRQ Priority

§ PCI Slot2 IRQ Priority

§ PCI Slot3 IRQ Priority

4.7.10 DMA Channels

These options allow you to specify the bus type used by each DMA channel. The
settings are PnP or ISA/EISA . The default setting is PnP.

§ DMA Channel 0

§ DMA Channel 1

§ DMA Channel 3

§ DMA Channel 5

§ DMA Channel 6

§ DMA Channel 7

4.7.11 IRQs Settings

These options specify the bus that the specified IRQ line is used on. These options
allow you to reserve IRQs for legacy ISA adapter cards. These options determine if
AMIBIOS should remove an IRQ from the pool of available IRQs passed to devices that
are configurable by the system BIOS. The available IRQ pool is determined by reading
the ESCD NVRAM. If more IRQs must be removed from the pool, the end user can use
these options to reserve the IRQ by assigning an ISA/EISA setting to it. Onboard I/O is
configured by AMIBIOS. All IRQs used by onboard I/O are configured as PCI/PnP.
IRQ12 only appears if the Mouse Support option in Advanced Setup is set to
Disabled. IRQ14 and 15 will not be available if the onboard PCI IDE is enabled. If all
IRQs are set to ISA/EISA and IRQ14 and 15 are allocated to the onboard PCI IDE,
IRQ9 will still be available for PCI and PnP devices, because at least one IRQ must be
available for PCI and PnP devices. The settings are ISA/EISA or PCI/PnP. The Optimal
and Fail-Safe default settings are PCI/PnP.

§ IRQ3

§ IRQ4

§ IRQ5

§ IRQ7

§ IRQ9

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§ IRQ10

§ IRQ11

§ IRQ12

§ IRQ14

§ IRQ15

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4.8 Peripheral Setup

Peripheral Setup options are displayed by choosing Peripheral Setup from the
AMIBIOS Setup main menu. All Peripheral Setup options are described here.

Figure 6

4.8.1 OnBoard FDC

Set this option to Enabled to enable the floppy drive controller on the motherboard. The
settings are Auto (AMIBIOS automatically determines if the floppy controller should be
enabled), Enabled, or Disabled. The default setting is Enabled.

4.8.2 OnBoard Serial Port1

This option specifies the base I/O port address of serial port 1. The settings are Auto
(AMIBIOS automatically determines the correct base I/O port address), Disabled, 3F8h,
2F8h, 2E8h, or 3E8h. The default setting is Auto.

4.8.3 OnBoard Serial Port2

This option specifies the base I/O port address of serial port 2. The settings are Auto
(AMIBIOS automatically determines the correct base I/O port address), Disabled, 3F8h,
2F8h, 2E8h, or 3E8h. The default setting is Auto.

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4.8.4 Serial Port2 Mode

This option specifies the operating mode for serial port 2.This option only appears if the

Onboard Serial Port2 option is not set to Auto or Disabled. The settings are IrDA or
Normal. The default setting is Normal.

4.8.5 OnBoard Parallel Port

This option specifies the base I/O port address of the parallel port on the motherboard.
The settings are Disabled, 378h, 278h, or 3BCh. The Optimal default setting is 378h.
The default setting is Disabled.

4.8.6 Parallel Port Mode

This option specifies the parallel port mode. The Optimal default setting is Normal.
The default setting is Disabled. The settings are:

Setting Description

Normal

The normal parallel port mode is used.

SPP/EPP

The parallel port can be used with devices that adhere to
the Enhanced Parallel Port (EPP) specification. EPP uses
the existing parallel port signals to provide asymmetric
bidirectional data transfer driven by the host device.

ECP

The parallel port can be used with devices that adhere to
the Extended Capabilities Port (ECP) specification. ECP
uses the DMA protocol to achieve data transfer rates up to

2.5 Megabits per second. ECP provides symmetric
bidirectional communication.

4.8.7 EPP Version

This option specifies the Enhanced Parallel Port specification version number that is
used in the system. This option only appears if the Parallel Port Mode option is set to

EPP.

The settings are 1.7 or 1.9. There are no Optimal and Fail-Safe default settings because
the default setting for the Parallel Port Mode option is not EPP.

4.8.8 Parallel Port IRQ

This option specifies the IRQ used by the parallel port. The settings are Auto, (IRQ) 5,
or (IRQ) 7. The default setting is Auto.

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4.8.9 Parallel Port DMA Channel

This option is only available if the setting for the Parallel Port Mode option is ECP.
This option sets the DMA channel used by the parallel port. The settings are (DMA
Channel0, 1, or 3. The Optimal and Fail-Safe default settings are not provided.

4.8.10 OnBoard PCI IDE

This option specifies the IDE channel used by the onboard IDE controller. The settings
are Disabled, Primary, Secondary or Auto . The default settings are Auto.

4.9 Auto-Detect Hard Disks

This option will automatically detect all possible modes that supported by the HDD
including NORMAL, LBA& LARGE for users' selecting. Please refer to Figure 1.

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4.10 Supervisor Password Setting

When you select this function, the following message will appear at the center of the screen
to assist you in creating a password.

Figure 7

4.10.1 Changing Supervisor Password

Select the Supervisor from the Security section of the AMIBIOS Setup main menu. Enter the
password and press <Enter>. The screen does not display the characters entered. After the
new password is entered, retype the new password as prompted and press <Enter>.

If the password confirmation is incorrect, an error message appears. If the new password is
entered without error, press<=Esc>. The password is stored in NVRAM after AMIBIOS
completes. The next time the system boots, a password prompt appears if the password
function is present and enabled.

4.11 Auto Configuration with Optimal Settings

The Optimal default settings are best-case values that should optimize system performance.
If NVRAM is corrupted, the Optimal settings are loaded automatically.

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5 VGA Installation(Option)

5.1 Introduction

The SQ578 All-In-One Mainboard provide a compact video and graphics solution for PC
based system. It provides a high performance 3-In-1 PCI true-color graphics accelerator with
video accelerate functions. It works in five different modes: VESA VAFC (VESA
Advanced Feature Connector) mode, standard FC (Feature Connector) mode, SiS FC (SiS
Porprietary Defined Feature Connector) mode, direct draw video mode, and PCI multimedia
mode.

5.1.1 Features

♦ Support tightly couppled host interface to VGA to speed up GUI performance and the

video playback frame rate.

♦ Support direct access to video memory to speed up GUI performance and the video

playback frame rate.

♦ Shared System Memory Area 0.5MB,1MB,1.5MB,2MB,2.5MB,3MB,3.5MB,4MB.
♦ Built-in 8QW CPU post write buffer with byte merging capability
♦ Support 32-bit PCI local bus standard revision2.1.
♦ Support PCI burst write.
♦ Support PCI multimedia design guide Rev.1.0.

5.1.2 Performance

♦ Support Turbo Queue (Software Command Queue in off-screen memory) architecture to

achieve extra-high performance.

♦ Built-in transparent BitBLT functions to accelerate Direct Draw performance.
♦ Built-in an enhanced 64bit BITBLT graphics engine with the following functions:

§ 256 raster operation functions

§ Rectagle fill

§ Color/Font expansion

§ Line-drawing with styled pattern

§ Built-in 8x8 pattern registers for 256 and high-color modes

§ Built-in 8x8 mask registers

§ 32 doublewords hardware Command Queue

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♦ Built-in 64x64x2 bit-mapped hardware cursor
♦ Built-in 6 stages PCI post write-buffer and 128 bits read-ahead cache to

minimize wait-states in video memory access.

♦ Built-in 4 stages GUI engine write-buffer and 9 stage read-buffer to minimize

engine wait-state.

♦ Built-in 64x64 CRT FIFOs with multiple scan lines prefetch capability to

imporove integration VGA performance

♦ Support Memory-mapped I/O.
♦ Support linear addressing mode up to 4Mbyte to speed up graphics performance

5.1.3 Interation

♦ Built-in programmable 24-bit true-color RAMDAC with reference-voltage

generator

♦ Built-in dual-clock generator
♦ Built-in monitor-sense circuit
♦ Built-in graphics accelerator and VGA controller
♦ Built-in video acclerator
♦ Built-in Phillips SAA7110/SAA7111, Brooktree Bt815/817/819A(8-bit SPI

mode 1,2) video decoder interface

♦ Built-in Standard feature connector logic support
♦ Built-in downloadable RAMDAC for graphics and video gamma correction in

direct color modes

5.1.4 Display Memory Interface

♦ Support FPM/EDO/Synchronous DRAM
♦ Support 32/64-bit display memory path resolution, Color & Frame Rate
♦ Support 170 MHz pixel clock
♦ Support super high resolution graphics modes

§ 640x480 256/32K/64K/16M colors NI

§ 800x600 16/256/32K/64K/16M color NI

§ 1024x768 16/256/32K/64K/16M color NI

§ 1280x1027 16/256 colors NI, 32K/64K colors interlace only

§ 1600x1200 256 colors NI

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♦ Support virtual screen up to 2048x2048
♦ Support 80/132 columns text mode in 25, 30, 44 or 60 rows and other modes

5.1.5 Video Functions

♦ Support full motion video playback up to 1027x768 256 colors in 1 MB DRAM

configuration

♦ Support single frame buffer architecture to save the DRAM cost
♦ Support graphics/video overlay function by color-key and /or chroma-key operations
♦ Support multi-format Video For Windows such as YUV420, YUV422, RGB565, and

RGB555

♦ Support YUV-to-RGB color space conversion
♦ Support video scaling in integer increments of 1/64
♦ Support horizontal 2-tap, 8-phase DDA interpolation for better quality of video

windows expansion

♦ Built-in 64x16 video capture FIFOs to support video capture
♦ Built-in four 64x48 line buffers to support vertical interpolation in YUV packed and

planar modes

♦ Built-in contrast enhancement and brightness adjustment logic to improve video

playback quality

♦ Support Microsoft Video For Windows
♦ Support color key and chroma key overlay
♦ Support 4-bit blending
♦ Support DCI drivers
♦ Support Direct Draw Drivers
♦ Support Direct MPEG Drivers

5.1.6 Power Management

♦ Support VESA Display Power Management Signaling (DPMS) compliant VGA

monitor for power management

♦ Built-in 30 min. standby and suspend timers with keyboard, hardware cursor, and/or

video memory read/write as activating source

♦ Support direct I/O command to force graphics controller into standby/suspend/off

state.

♦ Power down internal SRAM in direct color mode

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♦ Power down SRAM and video DAC in standby and suspend mode
♦ Meet ACPI requirements

5.1.7 Multimedia Application

♦ Support DDC1 and DDC2B specifications
♦ Follows the plug & play specification for display controller
♦ Support RAMDAC snoop for multimedia applications
♦ Support anti-tearing with single register fast page-flipping and scan line read back

5.2 Software Support

To fully utilize and support the Integrated VGA Controller hardware features, SiS has
developed a high-performance VESA extension compliant BIOS.

Extended graphics and text modes are supported by software application drivers developed
by SiS. The following applications are currently supported:

♦ 3D Studio Ver. 3.0 & 4.0
♦ AutoCAD/386 Release 11,12,13
♦ Auto Shade/386 Ver. 2.0
♦ GEM 3.0/Ventura 2.0
♦ Lotud1-2-3/Symphony Ver.3.x
♦ MicroSoft Windows 3.1
♦ MicroSoft Windows 95
♦ MicroSoft Windows NT Ver. 3.1 & 3.5
♦ OrCad (SDT/VST/PCB) Rel 4
♦ OS/2 Presentation Manager 2.1 & 3.0
♦ P-CAD Ver. 7.06
♦ VersaCAD/386 Ver.2.1
♦ Word Perfect 5.x&6.0

Video operation are supported by software application drivers developed by SiS. The
following applications are currently supported:

♦ Microsoft Video For Windows
♦ DCI driver
♦ Direct Draw driver

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Documentation Rev. Number: A02 (September 1997)