Intel YM430TX User Manual

YM430TX

Pentium® Processor-Based

Motherboard User’s Manual

Information in this document is provided in connection with Intel products. No license,
express or implied, by estoppel or otherwise, to any intellectual property rights is
granted by this document. Except as provided in Intel’s Terms and Conditions of Sale
for such products, Intel assumes no liability whatsoever, and Intel disclaims any ex­press or implied warranty , relating to sale and/or use of Intel products including liabil­ity or warranties relating to fitness for a particular purpose, merchantability, or in­fringement of any patent, copyright or other intellectual property right. Intel products
are not intended for use in medical, life saving, or life sustaining applications. Intel
may make changes to specifications and product descriptions at any time, without

notice.

Copyright © 1997, Intel Corporation. Third-party brands and trademarks are the prop­erty of their respective owners.

Product Name: Intel YM430TX
Manual Revision: 1.00
Release Date: May 1997

2 Intel YM430TX User’s Manual

Getting Help

World Wide Web

http://www.intel.com

Telephone

Talk to a Customer Support Technician* (Intel reserves the right to change
pricing for telephone support at any time without notice)

In U.S.: 1-900-555-5800 (M–F, 7:00

am

–5:00 pm, Th 7:00 am–3:00 pm, PST)

Calls billed at U.S. $2.50 per minute
In U.S. and Canada: 1-800-404-2284 (M–F, 7:00

am

Th 7:00

–3:00 pm, PST) Credit card calls billed at U.S. $25 per incident

am

–5:00

pm

,

In Europe: contact Intel at http://www.intel.com/intel/contact for up-to-date
technical support phone numbers

In Asia-Pacific region (Singapore local time, Oct–April: M–F, 6:00

pm

; April–Oct: M–F, 5:00 am–4:00 pm) Credit card calls billed at U.S. $25

am

–4:00

per incident

Australia (Sydney): [phone]
Hong Kong: [phone]
Korea: [phone]
PRC: [phone]
Singapore: [phone]
Taiwan: [phone]

Rest of the world: Call the North American Service Center at [phone]

am

(M–F, 7:00

–5:00 pm, U.S. pacific standard time)

* Or contact your local dealer or distributor.

Technical Training & Support

If you are registered in the Intel Processor Dealer Program (North America),
the Genuine Intel Dealer Program (Asia-Pacific Region), or the Intel Proces­sor Integrator Program (Europe), you are eligible for technical training and
support.

am

In U.S. and Canada: 1-800-538-3373, ext. 442 (M–F , 5:00

–5:00 pm, PST)

In Europe: contact your distributor or fax your details to European Literature
on [phone]

am

In Asia: [phone] (M–F, 8:30

–5:30 pm, Singapore local time) or via

e-mail: AP [e-mail]

Intel YM430TX User’s Manual 3

Contents

1. Introduction .......................................................................................... 7

How this Manual is Organized.............................................................. 7

Item Checklist....................................................................................... 7

2. Features ............................................................................................... 8

Features of the Intel YM430TX Motherboard ....................................... 8

The Intel YM430TX Motherboard ....................................................... 11

3. Installation .......................................................................................... 12

Intel YM430TX Motherboard Layout .................................................. 12

Installation Steps ................................................................................ 14

1. Set Jumpers on the Motherboard.................................................. 14

Jumper Settings ................................................................ 15

2. Install Memory Modules ................................................................ 18

SIMM Memory Installation................................................. 19

DIMM Memory Installation................................................. 20

3. Install the Processor. ..................................................................... 21

4. Install Expansion Cards................................................................. 22

Expansion Card Installation Procedure ............................. 22

Assigning IRQs for Expansion Cards ................................ 22

Assigning DMA Channels for ISA Cards ........................... 23

5. Connect Cables, Wires, and Power Supply ................................... 24

Power Connection Procedures ..................................................... 30

4. BIOS Software ................................................................................... 31

Support Software................................................................................ 31

Flash Memory Writer Utility........................................................... 31

Main Menu......................................................................... 32

Advanced Features ........................................................... 32

Managing & Updating your Motherboard’s BIOS.......................... 33

BIOS Setup ........................................................................................ 34

Setup Utility ....................................................................... 34

Load Defaults ................................................................... 35

Standard CMOS Setup...................................................... 35

Details of Standard CMOS Setup...................................... 36

BIOS Features Setup.................................................................... 38

Details of BIOS Features Setup ........................................ 38

Chipset Features Setup ................................................................ 40

Details of Chipset Features Setup..................................... 41

4 Intel YM430TX User’s Manual

Power Management Setup ........................................................... 44

Details of Power Management Setup................................ 44

PNP and PCI Setup ...................................................................... 46

Details of PNP and PCI Setup........................................... 46

Load BIOS Defaults ...................................................................... 48

Load Setup Defaults ..................................................................... 48

Supervisor Password and User Password ................................... 49

IDE HDD Auto Detection............................................................... 50

Save & Exit Setup......................................................................... 51

Exit Without Saving....................................................................... 51

5. Support Software ............................................................................... 52

Intel YM430TX Software and Manual CD .......................................... 52

Intel YM430TX User’s Manual 5

FCC & DOC Compliance

Federal Communications Commission Statement

This device complies with FCC Rules Part 15. Operation is subject to the following
two conditions:

• This device may not cause harmful interference, and

• This device must accept any interference received, including interference that
may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installa­tion. This equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with manufacturer’s instructions, may cause
harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interfer­ence by one or more of the following measures:

• Re-orient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment to an outlet on a circuit different from that to which the
receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

WARNING! The use of shielded cables for connection of the monitor to the graph-

ics card is required to assure compliance with FCC regulations. Changes or modifi­cations to this unit not expressly approved by the party responsible for compliance
could void the user’s authority to operate this equipment.

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus set out in the Radio Interference Regulations of the Canadian
Department of Communications.

6 Intel YM430TX User’s Manual

1. Introduction

How this Manual is Organized

This manual contains the following sections:

1. Introduction — document organization and product checklist

2. Features — product information and specifications

3. Installation — instructions for setting up the motherboard

4. BIOS Setup — instructions for setting up the BIOS software

5. Support Software — description of software drivers and utilities

Item Checklist

Please check that your package is complete. If you discover damaged or missing
items, please contact your retailer.

þ Intel YM430TX motherboard
þ 2 serial port ribbon cables attached to a mounting bracket

(Sections/Checklist)

1. Introduction

þ 1 parallel ribbon cable with a mounting bracket
þ 1 IDE ribbon cable
þ 1 floppy ribbon cable
þ 1 CD-ROM containing the following items

• Windows 95 update utility for the 430TX PCIset

• ISA configuration utility

• flash memory writer utility to update the flash BIOS

• warranty

• user’s manual

• readme files for descriptions and use of the files

þ Intel PS/2 mouse/USB connector card

Intel YM430TX User’s Manual 7

2. Features

Features of the Intel YM430TX Motherboard

The Intel YM430TX motherboard is designed for the demanding PC user who wants
many intelligent features in a small package. This motherboard has the following
features:

• Intel Chipset: Intel’s 430TX PCIset with I/O subsystems.

• Multi-Processor/Multi-Speed Support: Supports 90- to 200-MHz Intel Pen-

(Intel YM430TX)

2. Features

tium
technology.

• V ersatile Memory Support: T wo DIMM sockets support up to 256 MB of 8 to

128MB, 168-pin, 3.3-volt SDRAM/EDO memory modules. Four SIMM sock­ets support up to 256 MB of 4 to 64MB, 72-pin fast page mode (FPM) or
extended data out (EDO) memory modules. SIMMs and DIMMs cannot be used
at the same time.

• Easy Installation: The BIOS supports auto detection of hard drives, PS/2 mouse,

and Plug and Play devices to simplify setup.

®

processors and 166- to 233-MHz Intel Pentium

®

processors with MMX

• Dual Power Supply: T wo onboard power connectors support either AT or ATX

power supplies with soft-on/off features.

• ISA and PCI Expansion Slots: Two 16-bit ISA slots, three 32-bit PCI slots,

and one shared PCI/ISA slot.

• Super Multi-I/O: Provides two high-speed, UAR T -compatible serial ports; one

parallel port with EPP and ECP capabilities; and an integrated keyboard control­ler. Supports two floppy drives of either 5.25” or 3.5” (1.44 MB or 2.88 MB)
without an external card. Supports Japanese Floppy 3 mode (3.5” disks: 1.2MB)
and LS-120 floppy drives (3.5” disks: 120MB, 1.44MB, 720K).

• Desktop Management Interface (DMI): BIOS supports DMI, allowing hard-

ware to communicate within a standard protocol. (Requires DMI-enabled com­ponents.)

• PCI Bus Master IDE Controller: The onboard Ultra DMA/33 Bus Master

IDE controller with two connectors supports four IDE devices in two channels,
allowing IDE transfer rates up to 33MB per second, and also supports enhanced
IDE devices. This controller supports PIO Modes 3 and 4 and Bus Master IDE
DMA Mode 2. BIOS supports IDE CD-ROM or SCSI bootup.

• Level 2 Cache: 512KB pipelined burst SRAM onboard.

• PS/2 Mouse, USB Connector: Includes a cable and bracket set to mount the

connectors to an unused expansion slot on the system chassis.

8 Intel YM430TX User’s Manual

Performance:

• SDRAM Optimized Performance – Synchronous dynamic random access

memory (SDRAM) increases the data transfer rate from a maximum of 264 MB
per second using EDO memory to a maximum of 528 MB per second using
SDRAMs.

• Double the IDE Transfer Speed – Intel’s 430TX PCIset improves the IDE

transfer rate by using Bus Master UltraDMA/33 IDE, which can transfer data at
rates up to 33MB per second. This new technology is compatible with existing
ATA-2 IDE specs, so there is no need to upgrade current hard drives or cables.

• Concurrent PCI – Concurrent PCI allows multiple PCI transfers from PCI master

buses to memory to CPU.

• ACPI Ready – The advanced configuration and power interface (ACPI) pro-

vides more energy-saving features for future operating systems (OS) by sup­porting OS-direct power management (OSPM). W ith these features implemented
in the OS, PCs can be ready around the clock every day, yet satisfy energy­saving standards. To fully utilize the benefits of ACPI, systems must use an
ACPI-supported OS — such as the successor to Windows 95.

Intelligence:

• Virus Write Pr otection – Normally , viruses can destroy data on storage media.

Some new-generation viruses can also clear BIOS data, which is usually unpro­tected. The Intel YM430TX motherboard was designed to cooperate with BIOS,
chipset, and flash memory to disable write permission when the system’ s initial­ization stage is completed upon boot-up.

• Auto Fan Off – The CPU fan will power off automatically even in sleep mode.

This feature reduces both energy consumption and system noise, and is an im­portant feature for silent PC systems.

2. Features

(Intel YM430TX)

• Dual-function Power Button (requir es ATX power supply) – The system can

be in one of two states, sleep or soft-off. Pressing the power button for less than
4 seconds places the system into sleep mode. Pressing the power button for
more than 4 seconds places the system into soft-off mode.

• Remote Ring On (requires ATX power supply) – This feature allows a com-

puter to be turned on remotely through a modem. With this feature enabled, any
user can access vital information from their computer from anywhere in the world.

• Message LED – By illuminating in different ways, chassis LEDs can provide

meaningful information. For example, an LED might blink to indicate that the fax/
modem is transferring data or light steadily to indicate that the fax/modem is idle.

Intel YM430TX User’s Manual 9

(This page was intentionally left blank)

10 Intel YM430TX User’s Manual

The Intel YM430TX Motherboard

3 PCI Slots
2 ISA Slots

1 ISA/PCI Share

IDE Connectors

AT Power
Connector

ATX Power
Connector

4 SIMM Sockets

2 DIMM Sockets

PS/2 Mouse, USB

Serial, Parallel, Floppy

Keyboard

2. Features

(Intel YM430TX)

Programmable
Flash ROM

Intel’s 430TX
PCIset

CPU ZIF
Socket 7

Switching Voltage Regulators

512KB Pipelined Burst L2 Cache

Intel YM430TX User’s Manual 11

3. Installation

Intel YM430TX Motherboard Layout

ISA Slot 3

(Motherboard Layout)

3. Installation

ISA Slot 2

ISA Slot 1

RTCLR

Multi-I/O

PCI Slot 4

BBLKW

Super

PCI Slot 3

Intel
PIIX4
PCIset

PCI Slot 2

PCI Slot 1

Serial Ports

USB, PS/2 Mouse

AT Power Input

Secondary IDE

Primary IDE

COM 1
COM 2

Parallel Port

Floppy Drives

SIMM Socket 1 (32-bit, 72-pin module)

P9

Key­board

SIMM Socket 2 (32-bit, 72-pin module)

SIMM Socket 3 (32-bit, 72-pin module)

SIMM Socket 4 (32-bit, 72-pin module)

DIMM Socket 1 (64-bit, 168-pin module)

DIMM Socket 2 (64-bit, 168-pin module)

P8

ATX Power Input

01

01

Row

23 23

CR2032 3Volts
Lithium Cell

BIOS Power

CPU Voltage

Panel Connectors

VID0

Switching Voltage Regulators

IDE LED

Flash BIOS

CPU Fan

Freq. Ratio

BF0

BF1

CPU ZIF Socket 7

512KB Pipelined Burst L2 Cache

12 Intel YM430TX User’s Manual

Intel
430TX
PCIset

Row

01

FS0

Clock
Freq

23

FS1

Jumpers

BBLKW p. 15 Flash Memory Boot Block Program (Boot

Block Write-Protect/Boot Block Write Enable)

RTCLR p. 15 Real Time Clock RAM

(Keep CMOS/Clear CMOS)
VID0, VID1, VID2 p. 16 Voltage Regulator Output Selection
FS0, FS1, FS2 p. 16 CPU External Clock (Bus) Frequency Selection
BF0, BF1 p. 16 CPU-to-Bus Frequency Ratio

Expansion Slots

SIMM Sockets p. 19 SIMM Installation
DIMM Sockets p. 20 DIMM Installation
ZIF Socket 7 p. 21 CPU Installation
PCI and ISA Slots p. 22 Expansion Cards

Connectors

KBCON p. 24 Keyboard Connector (5-pin Female)
FLOPPY p. 24 Floppy Drive Connector (34-pin Block)
PRINTER p. 25 Parallel Printer Connector (26-pin Block)
COM1, COM2 p. 25 Serial Port COM1 & COM2 Connectors

(10-pin Blocks)
FAN p. 26 CPU Cooling Fan Connector
Primary / Secondary IDE p. 26 Primary / Secondary IDE Connectors

(40-pin Blocks)
IDELED p. 2 7 IDE Activity LED
USB / PS/2 p. 27 PS/2 Mouse, USB (18-pin Block)
MSG LED (PANEL) p. 28 Message LED Lead (2 pins)
SMI (PANEL) p. 28 SMI Suspend Switch Lead (2 pins)
PWR SW (PANEL) p. 28 ATX Power Switch/Soft Power Switch Lead

(2 pins)
RESET (PANEL) p. 28 Reset Switch Lead (2 pins)
KEYLOCK / PWR LED (PANEL) p. 28 Keyboard Lock Switch

and System Power Lead (5 pins)
SPEAKER (PANEL) p. 28 Speaker Connector (4 pins)
AT POWER p. 29 AT Motherboard Power Connector

(12-pin Block)

ATXPWR p. 29 ATX Motherboard Power Connector

(20-pin Block)

3. Installation

(Motherboard Layout)

Intel YM430TX User’s Manual 13

Installation Steps

Before using your computer, you must complete the following steps:

1. Set jumpers on the motherboard.

2. Install memory modules.

3. Install the processor.

4. Install expansion cards.

5. Connect ribbon cables, cabinet wires, and power supply.

6. Set up the BIOS software.

1. Set Jumpers on the Motherboard.

Several hardware settings are made by using jumper caps to connect jumper pins

3. Installation

(Jumpers)

(JP) on the motherboard. See the motherboard layout on page 12 for locations of
jumpers. The jumper settings are described numerically , such as [----], [1-2], [2-3].
For no connection, connect pins 1 and 2 and connect pins 2 and 3. Pin 1 is always
on top
connector away from you. A “1” is written beside pin 1 on jumpers with three pins.
The jumpers are also shown graphically such as to connect pins 1&2 and

and for open (off). For manufacturing simplicity, the jumpers may be sharing
pins from other groups. Use the diagrams in this manual instead of following the
pin layout on the board. Settings with two jumper numbers require that both jump­ers be moved together . To connect the pins, simply place a plastic jumper cap over
the two pins as diagrammed.

WARNING! Computer motherboards and components contain very delicate

integrated circuit (IC) chips. To protect the motherboard and other compo­nents against damage from static electricity, you should follow some precau­tions whenever you work on your computer.

1. Unplug your computer before working on the inside.

2. Use a grounded wrist strap when handling computer components. If you do

3. Hold components by the edges and try not to touch the IC chips, leads, or

4. Place components on a grounded antistatic pad or on the bag that came with

Pin 1

or on the left

Pin 1

when holding the motherboard with the keyboard

to connect pins 2&3. Jumpers with two pins are shown as for short (on)

not have one, touch both of your hands to a safely grounded object or to a
metal object, such as the power supply case.

circuitry.
the component whenever the components are separated from the system.

14 Intel YM430TX User’s Manual

Jumper Settings

1. Flash Memory Boot Block Programming (BBLKW)

This sets the operation mode of the boot block area of the programmable flash memory
to allow programming in the Boot Block Write Enable position. This is required
only if prompted by the Flash Memory W riter Utility (see BIOS Software).

Programming BBLKW

Boot Block Write-Protect [1-2] (Default)
Boot BLock Write Enable [2-3]

BBLKW

Boot Block
Write Protect
(Default)

Boot Block Programming

BBLKW

Boot Block
Write Enable

2. Real Time Clock (RTC) RAM (RTCLR)

The CMOS RAM is powered by the onboard button cell battery. To clear the
RTC data: (1) Turn off your computer and unplug the AC power, (2) Move this
jumper to “Clear CMOS,” (3) Move the jumper back to “Keep CMOS,” ( 4) T urn
on your computer, (5) Hold down <Delete> during bootup and enter BIOS setup
to re-enter user preferences.

Battery Test Jumper (RTCLR)

You can test the battery’s current by removing this jumper and attaching a cur­rent meter to pins 1& 2.

WARNING! Before testing, ensur e that there is no power to your motherboard.

Testing can clear the CMOS RAM containing BIOS setup information. Use the
BIOS setup to re-enter user information after r emoving and reapplying this jumper.

(Jumpers)

3. Installation

RTC RAM RTCLR

Keep CMOS [1-2] (Default)
Clear CMOS [2-3] (momentarily)

RTCLR

Battery Test

Keep CMOS (Default)

RTC RAM

Intel YM430TX User’s Manual 15

RTCLR

Clear CMOS

3. Voltage Regulator Output Selection (VID0)

These jumpers set the voltage supplied to the CPU. The onboard voltage regulators
will automatically detect and switch between single power p lane & dual power
plane CPUs. A CPU is usually referred to by its Vcore voltage.

(Single Plane) (Dual Plane)

Type Vcore Vio Vcore Vio VID0

VRE 3.5V 3.5V 2.9V 3.3V [1-2]
STD 3.4V 3.4V 2.8V 3.3V [2-3]

3. Installation

(Jumpers)

4. CPU External (Bus) Frequency Selection (FS0, FS1, FS2)

5. CPU to Bus Frequency Ratio (BF0, BF1)

Single Plane
Dual Plane

VID 0

VRE (3.5V)
(2.9Volt)

1
2
3

VID 0

1
2
3

STD (3.4V)
(2.8Volt)

CPU Vcore Voltage Selection

These jumpers tell the clock generator what frequency to send to the CPU.
These allow the selection of the CPU’s external frequency (or bus clock).
The bus clock times the bus ratio equals the CPU’s internal frequency (the
advertised CPU speed).

These jumpers set the frequency ratio between the internal frequency of the CPU
and the external frequency (called the bus clock) within the CPU. These must be
set together with the jumpers for CPU External (Bus) Frequency Selection.

BF1

BF1

BF0

1
2

3

1.5X(3/2)

BF1

BF0

1
2

3

2.0x(2/1)

BF1

BF0

1
2

3

2.5x(5/2)

BF0

1
2

3

3.0(3/1)

CPU : BUS Frequency Ratio

FS1

FS0

FS1

FS0

CPU External Clock (BUS)

1
2

3

60MHz

1
2

3

66MHz

Frequency Selection

16 Intel YM430TX User’s Manual