Pentium 5VC2 Use and care manual

Pentium
82430 VX/P54C PCI Mainboard
User’s Guide &
Technical Reference
5VC2/C5/C5M

ii
®
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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,
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property of their owners.
Disclaimer
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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
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Edition: February 1997
Version 1.1
5VC2/C5/C5M SERIAL

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
JP5: CMOS Clear Jumper ..................................................... 5
JPS2: PS/2 Mouse Function Jumper ..................................... 5
JP37: CPU Cooling Fan Connector...................................... 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)................ 9
Pentium Ð 180/200 CPU Settings (3.0 x clock)................ 9
Step 2: CPU Single/Dual Voltage Setting.......................... 10
Single Voltage CPU Setting ........................................... 10
Dual Voltage CPU Setting.............................................. 11
Memory Configuration ............................................................. 12
RAM Bank Installation Notice............................................ 12
Cache Configuration ................................................................. 12
Cache Size and RAM Locations ......................................... 12
Multi I/O Port Addresses .......................................................... 13
Connectors ................................................................................ 13
COM1, COM2Ð COM1/COM2 Connectors ....................... 13
FDC Connector ................................................................... 13
J19 Ð Hardware Reset Control............................................. 13
J24 Ð HDD LED Connectors ............................................... 13
IDE1/IDE2 Ð On-board Primary/Secondary IDE HDD
Connectors ........................................................................... 14
J6 Ð IR Connector................................................................ 14
J2 Ð Keyboard Connector .................................................... 14
J17 Ð Keylock & Power LED Connector ............................ 14
J1 Ð PS/2 Mouse Connector ................................................ 14
PRT Ð Parallel Port Connector ............................................ 14
PW Ð Power Supply Connector ........................................... 14
J23: Sleep Switch Connector Enable/Disable ..................... 15
J22 Ð Turbo LED Connector ............................................... 15
J3, J4 Ð Universal Serial Bus Connectors ........................... 15

Chapter 3: BIOS Setup.................................................. 16
Standard CMOS Setup .............................................................. 17
BIOS Features Setup ................................................................. 18
Chipset Features Setup.............................................................. 20
Power Management Setup ........................................................ 23
PNP/PCI Configuration Setup .................................................. 25
Load Setup Defaults.................................................................. 27
Load BIOS Defaults.................................................................. 27
Integrated Peripherals ............................................................... 28
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 NT3.5/4.0........................................................ 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 VX PCI mainboard is a high-performance AT form-factor
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 P54C/P55C family CPUs running at 75~200 MHz
speeds; Cyrix 6x86/6x86L CPUs running at P133+/P150+/P166+
MHz speeds; and AMD K5 CPUs.
ÑSupports 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 Supports 2 strips of 8MB/16MB/32MB Unbuffered DIMMs
Ñ On-board memory configurations from 4 to 128 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 three ISA slots, 4-layer PCB
ÑSupports Universal Serial Bus Ñ USB
¥ 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, and one PS/2 mouse
port
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 82430VX Mainboard
¥ This UserÕs Guide
¥ One IDE Bus Master driver
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
8 107
9
11
13
12
2
22 2
3 3
6
1
15
14 14
5
4
4
17 16
Figure 1Ð1. Mainboard Layout
1. ZIF socket 7 (for P54C/P55C) 10. SIMM Bank
2. 82430 VX Chipset 11. Floppy Connector
3. Pipelined Burst SRAM 12. IDE1/IDE2 Connector
4. Super I/O Chip 13. Parallel Port Connector
5. PnP FLASH BIOS 14. COM1/COM2 Connector
6. TAG SRAM 15. AT Power Connector
7. ISA Slots 16. KB Connector
8. PCI Slots 17. PS/2 Mouse Connector
9. Unbuffered DIMM Bank

4Introduction
Default settings are as follows: Pentium 100MHz (P54C) CPU, 256K
Pipelined Burst cache, On-board PCI E-IDE Enabled, 2 high speed
UARTS Enabled (w/ 16550 FIFO), 1 EPP/ECP port (ECP + EPP mode),
and 5V DRAM/3.3V DIMM.
DIMM 1 (Share BANK 1) DIMM 2 (Share BANK 0)
#3 #2 #1
ISA SLOT
#1#2#3#4
PCI SLOT
SIMM BANK 1 SIMM BANK 0
82371 SB
82437 VX
J23
RST
J19 J24 HD
LED
J18
1J17
TB
LED
J22 1
Keylock
SPK
COM2 COM1
8680
82438VX 82438VX
P.B. SRAM
32Kx32 P.B. SRAM 32Kx32
J1 J2
PW
1
JP37
FDC
PRT
IDE 1 IDE 2
TAG SRAM
586
CPU
Family
12345
SW1
ON
Flash BIOS
USB
J3
J4
JPS2
8687
JP34 JP33 JP32
1
JP5
1J6
IR
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
JP5: CMOS Clear Jumper
Clear the CMOS memory by momentarily shorting pin 2Ð3; then
shorting pin 1Ð2 to retain new settings.
CMOS Setting JP5
Retain CMOS data
(default)
1
Clear CMOS data
1
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.

6Hardware Setup
JP37: CPU Cooling Fan Connector
This 3-pins connector provides 12V power for the CPU cooling fan
which matches the pin assignment of this connector.
CPU Cooling Fan Connector
(Pin Assignment)
1 (GND)
2 (12V)
3 (GND)
Note: Make sure the pin assignment is matched with this connector
before connecting it, otherwise, you may damage either the
mainboard or the cooling fan.

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.
❑Step 1: Frequency Setting
Pentium – 75/90/100 CPU Settings (1.5 x clock)
AMD K5 – PR75/PR90/PR100/PR120/PR133 (1.5 x clock)
Pentium – 75/50 MHz
AMD K5 – PR 75/50MHz
12345
SW1
ON
Pentium – 90/60 MHz
AMD K5 – PR 90/60MHz
AMD K5 – PR 120/60 MHz
12345
SW1
ON
Pentium – 100/66 MHz
AMD K5 – PR 100/66 MHz
AMD K5 – PR 133/66 MHz
21 345
SW1
ON
82437 VX
586
CPU
Family
12345
SW1
ON
Figure 2Ð1Ð1. CPU Jumper Settings
Note: 1. You must equip the CPU with a fan and heat sink for system
stability.
2. AMD K5ÐPR75/90= AMD 5k86(SSA5)ÐP75/90.

8Hardware Setup
Pentium – 100/120/133 CPU Settings (2.0 x clock)
Cyrix 6x86/6x86L – P133+/P150+/P166+CPU Settings (2.0 x clock)
Pentium – 100/50MHz
12345
SW1
ON
Cyrix 6x86/6x86L – P133+/55 MHz
12345
SW1
ON
Pentium – 120/60 MHz
Cyrix 6x86/6x86L – P150+/60 MHz
21 345
SW1
ON
Pentium – 133/66 MHz
Cyrix 6x86/6x86L – P166+/66 MHz
21 345
SW1
ON
82437 VX
586
CPU
Family
12345
SW1
ON
Figure 2Ð1Ð2. CPU Jumper Settings
Note: You must equip the CPU with a fan and heat sink for system
stability.

Hardware Setup 9
Pentium/AMD – 150/166 CPU Settings (2.5 x clock)
82437 VX
586
CPU
Family
12345
SW1
ON
Pentium – 150/60 MHz
AMD K5 – PR150
12345
SW1
ON
Pentium – 166/66 MHz
AMD K5 – PR166
21 345
SW1
ON
Figure 2Ð1Ð3. CPU Jumper Settings
Note: You must equip the CPU with a fan and heat sink for system
stability.
Pentium – 180/200 CPU Settings (3.0 x clock)
Pentium – 180/60 MHz
12345
SW1
ON
Pentium – 200/66 MHz
21 345
SW1
ON
82437 VX
586
CPU
Family
12345
SW1
ON
Figure 2Ð1Ð4. CPU Jumper Settings
Note: You must equip the CPU with a fan and heat sink for system
stability.

10 Hardware Setup
❑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, AMD-K5-PRxxxBx, AMD-K5-PRxxxCx, AMD-K5-PRxxxFx,
and Cyrix 6x86. Refer to the following figures to set these CPUsÕ
voltage:
82437 VX
586
CPU
Family
JP34 JP33 JP32
Figure 2Ð2Ð1. Single Voltage 3.3V CPU
82437 VX
586
CPU
Family
JP34 JP33 JP32
Figure 2Ð2Ð2. Single Voltage 3.52V CPU (Default)

Hardware Setup 11
Dual Voltage CPU Setting
Dual voltage CPUs are designed to use different voltage for VIO and
VCore and they include Intel P55CX, Cyrix 6x86L, and Cyrix M2.
Refer to the following figures to set these CPUsÕ voltage:
82437 VX
586
CPU
Family
JP34 JP33 JP32
JP34 JP33 JP32
2.8V CPU
(default)
JP34 JP33 JP32
2.9V CPU
JP34 JP33 JP32
2.7V CPU
Figure 2Ð2Ð3. Intel P55CX, Cyrix 6X86 L/M2
Dual Voltage CPU
Note: Due to various design, please ask your CPU dealer for the exact
VIO and VCORE voltage before you install it.

12 Hardware Setup
Memory Configuration
The mainboard supports two banks of 72-pin SIMM, EDO DRAM, and
two strips of 3.3V Unbuffered DIMM. The mainboard requires SIMM
of at least 70ns access time.
The mainboard supports from 4 to 128 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.
RAM Bank Installation Notice
Due to the RAS line share architecture of VX chipset, the possible
combination of DIMM/SIMM in this mainboard are as one of the
followings:
1. In Bank 0, Bank 1, or Bank 0 & Bank 1
2. In DIMM 1, DIMM2, or DIMM 1 & DIMM 2
3. In Bank 0 & DIMM 1
4. In Bank 1 & DIMM 2
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.
Cache Size and RAM Locations
Cache Size Cache RAM TAG RAM Cacheable
Range
256KB 32K x32, 2 pcs
on U17, U18
16K x 8
on U19
64 MB
512KB 64K x 32, 2pcs
on U17, U18
16K x 8
on U19
128 MB

Hardware Setup 13
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.
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– COM1/COM2 Connectors
Attach COM1/COM2 device cable to these connectors.
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 – HDD LED Connectors
Attach the cable of hard disk drive LEDs to this connector. The LED
lights when an HDD is active.

14 Hardware Setup
IDE1/IDE2 – On-board Primary/Secondary IDE HDD
Connectors
Attach cables of hard disk drives to these connectors.
J6 – IR Connector
Attach a 5-pin infrared device cable to this connector for enabling the
infrared transfer function. This mainboard meets the specification of
ASKIAR and HPSIR.
J2 – Keyboard Connector
A 5-pin female DIN keyboard connector is located at the rear of the
board. Plug the keyboard jack into this connector.
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 and pin 4, 5 for keylock.)
J1 – PS/2 Mouse Connector
Attach PS/2 mouse cable to this connector.
PRT – Parallel Port Connector
Attach parallel port cable to this connector.
PW – Power Supply Connector
The mainboard requires a power supply with at least 200 watts and a
Òpower goodÓ signal. PW has two 6-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.

Hardware Setup 15
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.
J22 – Turbo LED Connector
Attach the turbo LED to J22. The LED lights when the system is in
Turbo mode.
J3, J4 – Universal Serial Bus Connectors
Attach 5-pin 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
PNP/PCI CONFIGURATION
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.