SOYO 82430 HX Use and care manual

Pentium
82430 HX PCI Mainboard
User’s Guide &
Technical Reference
5TH0/H2/H5

ii
®
™
About This Guide
This UserÕs Guide is for assisting system manufacturers and end users in setting
up and installing the mainboard. Information in this guide has been carefully
checked for reliability; however, no guarantee is given as to the correctness of the
contents. The information in this document is subject to change without notice.
Copyright Notice
Copyright 1996, Soyo Computer Inc. All rights reserved. This manual is
copyrighted by Soyo Computer Inc. You may not reproduce, transmit, transcribe,
store in a retrieval system, or translate into any language, in any form or by any
means, electronic, mechanical, magnetic, optical, chemical, manual, or otherwise,
any part of this publication without express written permission of Soyo Computer
Inc.
Trademarks
Soyo is a registered trademark of Soyo Computer Inc. All trademarks are the
property of their owners.
Disclaimer
Soyo Computer Inc. makes no representations or warranties regarding the
contents of this manual. We reserve the right to revise the manual or make
changes in the specifications of the product described within it at any time
without notice and without obligation to notify any person of such revision or
change. The information contained in this manual is provided for general use by
our customers. Our customers should be aware that the personal computer field is
the subject of many patents. Our customers should ensure that they take
appropriate action so that their use of our products does not infringe upon any
patents. It is the policy of Soyo Computer Inc. to respect the valid patent rights of
third parties and not to infringe upon or assist others to infringe upon such rights.
Restricted Rights Legend
Use, duplication, or disclosure by the Government is subject to restrictions set
forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer
Software clause at 252.277-7013.
Product Rights
Product mentioned in this manual are mentioned for identification purpose only.
Product names appearing in this manual may or may not be registered trademarks
or copyrights of their respective companies.
If you n.

Table of Contents
Chapter 1: Introduction ....................................................1
Key Features .................................................................................1
Unpacking the Mainboard.............................................................2
Electrostatic Discharge Precautions..............................................2
Mainboard Layout w/ Default Settings .........................................3
Chapter 2: Hardware Setup ..............................................5
Jumpers .........................................................................................5
JP3: Display Type ...................................................................5
JP5: CMOS Clear Jumper .......................................................6
JPS2: PS/2 Mouse Function Jumper .......................................6
CPU Type Configuration ..............................................................7
Step 1: Frequency Setting.......................................................7
Pentium Ð 75/90/100 CPU Settings (1.5 x clock)............. 7
Pentium Ð 100/120/133 CPU Settings (2.0 x clock)......... 8
Pentium Ð 150/166 CPU Settings (2.5 x clock)................ 8
Pentium Ð 180/200 CPU Settings (3.0 x clock)................ 9
Step 2: CPU Single/Dual Voltage Setting..............................9
Single Voltage CPU Setting ............................................. 9
Dual Voltage CPU Setting.............................................. 10
Memory Configuration ...............................................................10
Cache Configuration ...................................................................10
Cache Size and RAM Locations ...........................................11
Multi I/O Port Addresses ............................................................11
Connectors ..................................................................................12
COM1/COM2 Connectors.....................................................12
JP40 Ð CE Test Jumper Pin ...................................................12
FDC Connector .....................................................................12
J19 Ð Hardware Reset Control...............................................12
J24 Ð HDD LED Connectors .................................................12
IDE1/IDE2 Ð On-board Primary/Secondary IDE HDD
Connectors .............................................................................12
J5 Ð IR Connector..................................................................12
J17 Ð Keylock & Power LED Connector ..............................13
Keyboard Connector .............................................................13
J3 Ð PS/2 Mouse, PS/2 Keyboard Connector ........................13
PW Ð Power Supply Connectors ...........................................13
PRT Ð Parallel Port Connector ..............................................13

J23: Sleep Switch Connector Enable/Disable .......................14
J18 Ð Speaker Connector .......................................................14
J4, J6 Ð Universal Serial bus Connector (Optional) ..............14
J22 Ð Turbo LED Connector .................................................14
Chapter 3: BIOS Setup....................................................15
Standard CMOS Setup ................................................................16
BIOS Features Setup ...................................................................17
Chipset Features Setup................................................................20
Power Management Setup ..........................................................23
PNP/PCI Configuration Setup ....................................................25
Load Setup Defaults....................................................................26
Load BIOS Defaults....................................................................27
Integrated Peripherals .................................................................27
Supervisor Password ...................................................................30
User Password .............................................................................31
IDE HDD Auto Detection ...........................................................32
Chapter 4: Drivers Installation Guide ...........................33
IDE BUS Master Installation Guide ...........................................33
MS-DOS/WINDOW/WFW ..................................................33
WINDOWS NT3.5 ................................................................33
WINDOWS 95 ......................................................................34
NOVELL 3.X&4.X ...............................................................34
SCO UNIX ............................................................................34
SCO UNIX 5.0 ......................................................................35
OS/2 2.0 and WARP 3.X.......................................................36

1 Introduction
The 82430 HX PCI mainboard is a high-performance Dual-processor
system board that supports P54CX/P55CX family CPUs. You can order
256K or 512K of external cache memory on the mainboard. The
mainboard is fully compatible with industry standards, and adds many
technical enhancements.
Key Features
¥ CPU
Ñ Supports Dual P54CX/P55CX family CPUs running at 75 ~ 200
MHz speeds
ÑSupports two SOCKET 7 for upgrade
Ñ Supports P54CX/P55CX SMM Mode and CPU Stop Clock
¥ L2 Cache Controller
Ñ Write Back Cache Modes and Direct Mapped Organization
Ñ On-board 256K/512K Pipeline Burst SRAMs Cache
¥ DRAM Controller
Ñ Supports Fast-Page Mode, and EDO DRAM (both symmetrical
and asymmetrical addressing)
Ñ On-board memory configurations from 4 to 256 Mbytes
Ñ Supports ÒTable-FreeÓ DRAM configuration in any SIMM
bank
¥ BUS Controller
Ñ Compliant to PCI specifications v2.1
Ñ Four 32-bit PCI slots (Masters) and Four ISA slots, 4-layer PCB
Ñ Supports Universal Serial Bus Ñ USB (Optional)
¥ Peripheral Controller
Ñ System BIOS built-in NCR306 SCSI Card BIOS and ÒPlug and
PlayÓ function
Ñ On-board built-in PCI Master IDE controller and floppy
controller
Ñ On-board supports for two high speed UARTS (w/i 16550 FIFO),
one ECP/EPP/SPP compatible parallel port, one PS/2 mouse port,
and IR function
Ñ On-board supports FLASH Memory for easy upgrade BIOS
Ñ Easy installation of Triones EIDE/ATAPI CD-ROM Bus
Master Drivers

2Introduction
Unpacking the Mainboard
The mainboard package contains:
¥ The 82430HX Mainboard
¥ This User's Guide
¥ One IDE Bus Master driver and three audio drivers diskettes
Note: Do not unpack the mainboard until you are ready to install it.
Follow the precautions below while unpacking the mainboard.
1. Before handling the mainboard, ground yourself by grasping an
unpainted portion of the systemÕs metal chassis.
2. Remove the mainboard from its anti-static packaging and place it on a
grounded surface, component side up.
3. Check the mainboard for damage. If any chip appears loose, press
carefully to seat it firmly in its socket.
Do not apply power if the mainboard appears damaged. If there is
damage to the board contact your dealer immediately.
Electrostatic Discharge Precautions
Make sure you ground yourself before handling the mainboard or other
system components. Electrostatic discharge can easily damage the
components. Note that you must take special precaution when handling
the mainboard in dry or air-conditioned environments.
Take these precautions to protect your equipment from electrostatic
discharge:
¥ Do not remove the anti-static packaging until you are ready to install
the mainboard and other system components.
¥ Ground yourself before removing any system component from its
protective anti-static packaging. To ground yourself grasp the
expansion slot covers or other unpainted portions of the computer
chassis.
¥ Frequently ground yourself while working, or use a grounding strap.
¥ Handle the mainboard by the edges and avoid touching its
components.

Introduction 3
Mainboard Layout w/ Default Settings
1
1
2
3
3
5
6
2
7
8 9 10
11
1212
13
14 14
15
16
17
18 18
4
Figure 1Ð1. Mainboard Layout
1. P54C in ZIF socket 7 10. SIMM Bank
2. 82430 HX Chipset 11. Floppy Connector
3. Pipelined Burst SRAM 12. IDE1/IDE2 Connector
4. Dual CPU Controller 13. Parallel Port Connector
5. PnP FLASH BIOS 14. COM1/COM2 Connector
6. Real Time Clock (RTC) 15. AT Power Connector
7. Keyboard BIOS 16. KB Connector
8. ISA Slots 17. PS/2 Connector
9. PCI Slots 18. Super I/O chip

4Introduction
Default settings are as follows: Pentium 100MHz CPU, 256K
Pipelined Burst cache, On-board PCI E-IDE Enabled, 2 high speed
UARTS Enabled (w/ 16550 FIFO), and 1 EPP/ECP port (ECP + EPP
mode).
#1#2 #4
586
CPU
Family
82439 HX
82371 SB
RTC
#1 #2#3
#3#4
#4 #3 #2 #1
KB BIOS
586
CPU
Family
JP13 JP14
JPS2
JP3
DRAM
BANK
PCI SLOT
ISA SLOT
16Kx8 TAG
16Kx8 TAG
P.B. SRAM
32k x 32
P.B. SRAM
32k x 32
FLASH
BIOS
COM1 COM2 FDC1
PRT IDE1
IDE2
PW
KB
Conn.
J3
I/O
CHIP
JP40
J23
JP11
JP10 JP5
JP30
JP31
JP29
JP28
J18
J17 J7
J24 J19
1
1
Keylock
SPK
ResetIDELED
TB LED
USB
J6
J4
1
JP44
1
2
JP41
1
2
IR
J5
Super I/O
Chip
1
2
JP43
1
2
JP42
82093AA
Figure 1Ð2. Mainboard Default Setting
Important: Make sure the system is well ventilated to prevent
overheating and ensure system stability.

2 Hardware Setup
This chapter explains how to configure the mainboardÕs hardware. After
you install the mainboard, you can set jumpers, install memory on the
mainboard, and make case connections. Refer to this chapter whenever
you upgrade or reconfigure your system.
CAUTION:Turn off power to the mainboard, system chassis, and
peripheral devices before performing any work on the
mainboard or system.
Jumpers
JP3: Display Type
Set JP3 to configure the mainboard for use with either a color or
monochrome monitor.
Monitor Type JP3
Monochrome
EGA/VGA
(default)

6Hardware Setup
JP5: CMOS Clear Jumper
Clear the CMOS memory by momentarily shorting this jumper; then
open the jumper to retain new settings.
CMOS Setting JP5
Retain CMOS data
(default)
Clear CMOS data
JPS2: PS/2 Mouse Function Jumper
Set PS/2 mouse function enabled or disabled.
PS/2 Mouse Function JPS2
Disabled
(default)
Enabled
Note: The IRQ12 is dedicated to the PS/2 mouse when choosing enabled
of PS/2 Mouse Function.

Hardware Setup 7
CPU Type Configuration
This section shows you how to configure your CPU step by step. Note
that you need to check the CPU voltage before installation. If you want
to use both CPUs, remember that you can only install the same type,
voltage, and frequency CPUs in.
❑Step 1: Frequency Setting
Pentium – 75/90/100 CPU Settings (1.5 x clock)
586
CPU
Family
586
CPU
Family
JP13 JP14
JP11
JP10
JP11
JP10
JP11
JP10
JP11
JP10
Pentium – 75/50 MHz
Pentium – 90/60 MHz
Pentium – 100/66 MHz
Figure 2Ð1Ð1. CPU Jumper Settings
Note: You must equip the CPU with a fan and heat sink for system
stability.

8Hardware Setup
Pentium – 100/120/133 CPU Settings (2.0 x clock)
586
CPU
Family
586
CPU
Family
JP13 JP14
JP11
JP10
JP11
JP10
JP11
JP10
JP11
JP10
Pentium – 100/50 MHz
Pentium – 120/60 MHz
Pentium – 133/66 MHz
Figure 2Ð1Ð2. CPU Jumper Settings
Note: You must equip the CPU with a fan and heat sink for system
stability.
Pentium – 150/166 CPU Settings (2.5 x clock)
586
CPU
Family
586
CPU
Family
JP13 JP14
JP11
JP10
JP11
JP10
JP11
JP10
Pentium – 150/60 MHz
Pentium – 166/66 MHz
Figure 2Ð1Ð3. CPU Jumper Settings
Note: You must equip the CPU with a fan and heat sink for system
stability.

Hardware Setup 9
Pentium – 180/200 CPU Settings (3.0 x clock)
586
CPU
Family
586
CPU
Family
JP13 JP14
JP11
JP10
JP11
JP10
JP11
JP10
Pentium – 180/60 MHz
Pentium – 200/66 MHz
Figure 2Ð1Ð4. CPU Jumper Settings
Note: You must equip the CPU with a fan and heat sink for system
stability.
❑Step 2: CPU Single/Dual Voltage Setting
Single Voltage CPU Setting
Signal voltage CPUs use the same voltage for VIO and VCore and has
been used traditionally. The CPUs which fall into this category are Intel
P54CX. Refer to the following figures to set these CPUsÕ voltage:
586
CPU
Family
586
CPU
Family
JP30
JP31
JP29
JP28
JP44
1
2
JP41
1
2
1
2
JP43
1
2
JP42
Figure 2Ð2Ð1. Single Voltage 3.3V CPU

10 Hardware Setup
Dual Voltage CPU Setting
Dual voltage CPUs are designed to use different voltage for VIO and
VCore and they include Intel P55CX. Refer to the following figures to
set these CPUsÕ voltage:
1
2
1
2
1
2
586
CPU
Family
586
CPU
Family
JP30
JP31
JP29
JP28
JP44
1
2
JP41
JP43JP42
Figure 2Ð2Ð2. Intel P55CX (VIO = 3.3V, VCore = 2.8V)
Memory Configuration
The mainboard supports two banks of 72-pin SIMM, EDO DRAM.
The mainboard requires SIMM of at least 70ns access time.
The mainboard supports from 4 to 256 Mbytes with no other restrictions
on memory configurations. You can install SIMM in any combination
without having to rely on a memory configuration table. Memory
configuration is thus ÒTable-FreeÓ in any SIMM bank. You must install
two strips of SIMM modules to complete a bank.
Cache Configuration
The mainboard has a write-back caching scheme. You can order 256KB
or 512KB Level 2 Pipelined Burst cache onboard to improve the system
performance.

Hardware Setup 11
Cache Size and RAM Locations
Cache Size Cache RAM TAG RAM Cacheable
Range
256KB 32K x32, 2 pcs
on U10, U11
16K x 8
on U8, U9
512 MB
512KB 64K x 32, 2pcs
on U10, U11
16K x 8
on U8, U9
512 MB
Multi I/O Port Addresses
Default settings for multi-I/O port addresses are shown in the table
below.
Port I/O Address IRQ Status
LPT1* 378H 7 ECP + EPP
COM1 3F8H 4
COM2 2F8H 3
* If default I/O port addresses conflict with other I/O cards (e.g. sound
cards or I/O cards), you must adjust one of the I/O addresses to avoid
address conflict. (You can adjust these I/O addresses from the BIOS.
Note: Some sound cards have a default IRQ setting for IRQ7, which may
conflict with printing functions. If this occurs do not use sound
card functions at the same time you print.

12 Hardware Setup
Connectors
Attach the mainboard to case devices, or an external battery, via
connectors on the mainboard. Refer to Figure 1-1 for connector locations
and connector pin positions.
COM1/COM2 Connectors
Attach COM1/COM2 device cable to these connectors.
JP40 – CE Test Jumper Pin
This connector is reserved for the CE test. If you have some problems
during the CE test, unplug the jumper pin and try again.
FDC Connector
Attach floppy cable to this connector.
J19 – Hardware Reset Control
Attach the Reset switch to J19. Closing the Reset switch restarts the
system.
J24 – IDE LED Connectors
Attach on-board hard disk drive LEDs to this connector. The LED lights
when an HDD is active.
IDE1/IDE2 – On-board Primary/Secondary IDE HDD
Connectors
Attach on-board hard disk drives to these connectors.
J5 – IR Connector
Attach a 4-pin infrared device cable to this connector for enabling the
infrared transfer function. This mainboard meets the specification of
ASKIAR and HPSIR.

Hardware Setup 13
J17 – Keylock & Power LED Connector
J17 is a connector for a lock that may be installed on the system case for
enabling or disabling the keyboard. J17 also attaches to the caseÕs Power
LED. (Pin 1, 3 for power LED, pin 4, 5 for keylock.)
KB Conn – Keyboard Connector
A five-pin female DIN keyboard connector is located at the rear of the
board. Plug the keyboard jack into this connector.
J3 – PS/2 Mouse Connector
Attach PS/2 mouse cable to this connector for enabling the mouse
function. And also, you need to enable the PS/2 mouse function by
putting the jumper cap on JPS2 jumper.
PW – Power Supply Connectors
The mainboard requires a power supply with at least 200 watts and a
Òpower goodÓ signal. PW has two six-pin male header connectors. Plug
the dual connectors from the power directly onto the board connector
while making sure the black leads are in the center.
PRT – Parallel Port Connector
Attach parallel port cable to this connector.

14 Hardware Setup
J23: Sleep Switch Connector Enable/Disable
Toggle this jumper to force the system into power saving (Green) mode.
Any hardware IRQ signal makes the system wakeup.
J18 – Speaker Connector
Attach the system speaker to connector J18.
J22 – Turbo LED Connector
Attach the turbo LED to J22. The LED lights when the system is in
Turbo mode.
J4, J6 – Universal Serial bus Connector (Optional)
Attach USB cable to these connectors for external USB device.

3 BIOS Setup
The mainboardÕs BIOS setup program is the ROM PCI/ISA BIOS from
Award Software Inc. Enter the Award BIOS programÕs Main Menu as
follows:
1. Turn on or reboot the system. After a series of diagnostic checks, you
are asked to press DEL to enter Setup.
2. Press the <DEL> key to enter the Award BIOS program and the main
screen appears:
ROM PCI/ISA BIOS
CMOS SETUP UTILITY
AWARD SOFTWARE, INC.
STANDARD CMOS SETUP
BIOS FEATURES SETUP
CHIPSET FEATURES SETUP
POWER MANAGEMENT SETUP
PCI & ONBOARD I/O SETUP
LOAD SETUP DEFAULTS
LOAD BIOS DEFAULTS
INTEGRATED PERIPHERALS
SUPERVISOR PASSWORD
USER PASSWORD
IDE HDD AUTO DETECTION
SAVE & EXIT SETUP
EXIT WITHOUT SAVING
Time, Date, Hard Disk Type...
Esc : Quit ↑ ↓ → ← : Select Item
F10 : Save & Exit Setup (Shift) F2 : Change Color
3. Choose an option and press <Enter>. Modify the system parameters
to reflect the options installed in the system. (See the following
sections.)
4. Press <ESC> at anytime to return to the Main Menu.
5. In the Main Menu, choose ÒSAVE AND EXIT SETUPÓ to save your
changes and reboot the system. Choosing ÒEXIT WITHOUT
SAVINGÓ ignores your changes and exits the program.
The Main Menu options of the Award BIOS are described in the sections
that follow.

16 BIOS Setup
Standard CMOS Setup
Run the Standard CMOS Setup as follows.
1. Choose ÒSTANDARD CMOS SETUPÓ from the Main Menu. A screen
appears.
ROM PCI/ISA BIOS
STANDARD CMOS SETUP
AWARD SOFTWARE, INC.
Date (mm:dd:yy) : Fri, Feb 1 1995
Time (hh:mm:ss) : 7 : 30 : 33
HARD DISKS TYPE SIZE CYLS HEAD PRECOMP LANDZ SECTOR MODE
Primary Master : None 0 0 0 0 0 0 ----
Primary Slave : None 0 0 0 0 0 0 ----
Secondary Master : None 0 0 0 0 0 0 ----
Secondary Slave : None 0 0 0 0 0 0 ----
Drive A : 1.44M, 3.5 in.
Drive B : None
Video : EGA/VGA
Halt On : All Errors
Esc : Quit ↑ ↓ → ← : Select Item PU/PD/+/– : Modify
F11 : Help (Shift) F2 : Change Color F3 : Toggle Calendar
Base Memory: 640K
Extended Memory: 3328K
Other Memory: 128K
Total Memory: 4096K
2. Use arrow keys to move between items and select values. Modify
selected fields using PgUp/PgDn/+/Ð keys. Some fields let you enter
values directly.
Date (mm/dd/yy) Type the current date.
Time (hh:mm:ss) Type the current time.
Primary
(Secondary)
Master & Slave
Choose from the standard hard disk types 1 to
46. Type 47 is user definable. If a hard disk is
not installed choose ÒNot installed.Ó (default)
Drive A & B Choose 360KB , 5 1/4 in.,
1.2MB , 5 1/4 in.,
720KB , 3 1/2 in.,
1.44M , 3 1/2 in.(default),
2.88 MB, 3 1/2 in.or
Not installed
Video Choose Monochrome,
Color 40x25,
VGA/EGA (default),
Color 80x25
3. When you finish, press the <ESC> key to return to the Main Menu.