Intel Pentium OverDrive User manual

486 TM

Part Number: 351599-005

Intel Corporation

5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

Intel Corporation assumes no responsibility for errors or omissions in this

guide. Nor does Intel make any commitment to update the information

herein.

*All other brand and product names are trademarks of their respective

owners. First Edition July 1994

Second Edition April 1995

Third Edition September 1995

Fourth Edition January 1996

Fifth Edition July 1996

This symbol indicates a CAUTION or

WARNING. These are operations or

situations that may be harmful or

dangerous to you or your equipment.

All cautions and warnings should be

read and observed.

Explanation of symbols used in this guide:

This symbol indicates a NOTE. Notes

areitemsofspecialinterestthatpertain

to the section or procedure you are

reading. Notes typically clarify or

augment the material in the text.

Introduction.................................................................................... 4

Before You Begin... ....................................................................... 4

Installation...................................................................................... 5

Demonstration and Diagnostics Diskette .................................... 19

Troubleshooting ........................................................................... 20

Getting Help................................................................................. 28

Warranty....................................................................................... 30

Appendix A .................................................................................. 32

Contents

Serial Number: P240076

• the layout of any components or empty

sockets. Do the sockets have handles?

• the size of any components or empty

sockets. Youmust have a socket large

enough to fit the Pentium OverDrive

processor. In order to install the

Pentium OverDrive processor, you

must havea 237or238 pinsocket. See

page 10 for details.

Introduction

Congratulations on your purchase of a PentiumOverDriveprocessor!

The Pentium OverDrive processor for Intel486™processor-based systems is

a single chip processor upgrade for systems based on Intel486SX, Intel486

SX2™, Intel486 DX, and Intel486 DX2™processors, and makes all software

run faster on existing systems.

BeforeYou Begin...

This section provides instructions you should read before starting the Pentium

OverDrive processor installation.

On most computers, installing the Pentium OverDrive processor is simple if

you carefully follow the directions in your computer owner's manual and in

this manual. Before starting the installation process, we recommend you take

a few moments to:

• familiarize yourself with the appearance of your system's layout.

• read through the entire Installation section of this manual to fully

understand the process.

Your System's Layout

If you have not previously viewed your system's layout, at this point you may

wish to unplug your system, remove the cover and familiarize yourself with

the appearance of your system's components before continuing. Look for:

• the general appearance of your motherboard (the large board in

the bottom of your computer to which all other components are

attached). Are there cards or cables

near or attached to your motherboard?

Your system must

have a 237 or 238-pin

socket

Step 1 - Install the diskette software and view

the animated demo.

Intel includes a Demonstration and Diagnostics Diskette with your Pentium

OverDrive processor. The diskette contains two portions:

•ademonstration to guide you through the Pentium OverDrive

processor installation procedure.

• diagnostics to test your Pentium OverDrive processor for

proper installation and operation.

To view the demo, your computer must be equipped with a VGA video board

and monitor, and you need to install the diskette software on your system.

Installing the software program to view the demo also

places the diagnostic utilities on your hard disk. Intel

provides you with a utility to remove the diskette

software from your hard disk once you have completed

your Pentium OverDrive processor installation and

diagnostics. For more information on this utility or on

the diagnostic software, see the section Demonstration

and Diagnostics Diskette.

Installing the Diskette Software

You can use DOS* or Windows* to install the software on the diskette. The

full set of utilities takes 1.1 MB on your hard disk if you install it using DOS

and 1.2 MB if you install it using Windows. If you install the software from

DOS,youareaskedifyouwishtoapprovemodificationoftheAUTOEXEC.BAT

file. Intel recommends that you choose OK.

The installation program also asks you if you wish to only install the Fan

Monitor portion of the diagnostic software. If you want to install the fan test

software to your hard drive but do not desire the demonstration or post-install

diagnostics, choose this option.

To install the software on your hard disk, insert the diskette in drive A and:

For DOS users type: a:\install

For OS/2* or Windows NT*

users type from a DOS prompt: a:\install

For Windows users: In the Program Manager, select: FILE

and then select: RUN

On the Command Line, type: a:setup

and click OK

For Windows 95 users: From the task bar, select Start

From the Start menu, select Run

and at the prompt type:

\SETUP

To begin the demonstration after installing the software:

For DOS users: Go to the odp_util directory and type:

overdriv

For Windows NT users : Go to the odp_util directory and

type

from a full-screen DOS prompt:

overdriv

For Windows users: Double click the icon “OverDrive

Processor Demo/Diagnostics”

For OS/2 users: Ensure that the following line ap-

For more information, pears in your config.sys file:

refer to Troubleshooting VME=NO

section, p. 26. Ensure that the settings for your DOS

full-screen command prompt in-

cludes the following:

HW_TIMER set to ON

From a full-screen DOS prompt type:

overdriv

For Windows 95 users: Press

or click OK

When the Main Menu appears, select "Installation Demonstration." If instal-

lation sounds complicated after viewing the installation demo and after

reading through the installation sections of this manual, have a qualified

technician install the Pentium OverDrive processor for you.

Step 2- Ground yourself, then unplug computer

and remove cover.

To prevent damage from static discharge to the Pentium OverDrive processor

and to your computer, touch the metal back or side panel of your computer’s

system unit to ground yourself. Then, turn off the computer and any attached

equipment (such as a printer), unplug the power cord, and remove the cover

from the computer.

Warning:DangertoEquipment! ThePentium

OverDriveprocessorcanbedamagedbystatic

discharge. Be sure to ground yourself before

handling the Pentium OverDrive processor by

touchingthemetalon yourcomputer. Limiting

your movements during installation reduces

static electricity.

If installation sounds risky, have a qualified

technician install the Pentium OverDrive pro-

cessor. If you make a mistake, you could

damage the Pentium OverDrive processor,

damage your computer, or injure yourself. If

youinstall it yourself,follow theseinstructions

exactly.

Step 3 - Find the socket in which you will install

the Pentium OverDrive processor.

The socket in which you install your Pentium OverDrive processor may be

on your motherboard or removable processor card, and is near the Intel486

processor. If there is no specific Pentium OverDrive processor socket, you

must remove the original processor and install the Pentium OverDrive

processor in that socket.

If your system contains an Intel487™SX math

coprocessor, you must remove that component and

install the Pentium OverDrive processor in that socket.

The processor can appear in various forms. Your computer may have a

surface-mounted processor or a socketed processor, and the processor may

have a heat sink attached. However, the dimensions of the original processor

are similar to those of the Pentium OverDrive processor. Your computer

owner's manual may contain location information for the processor. If you

cannot locate the processor, contact your dealer or your computer manufac-

turer for assistance.

Socketed

Processor

Motherboard

Intel486 SX or DX

Processor

OverDrive

processor

socket

Surface-mounted

Processor Processor with heat

sink attached

PC-2597a

486

Removable

Processor card

Once you locate the processor, look in the immediate area to determine

whether or not your system has an empty socket specifically dedicated for the

Pentium OverDrive processor.

A Quick Word About Socket Types

There are several types of Pentium OverDrive processor sockets. You must

determine which socket type you have in order to successfully insert your

Pentium OverDrive processor.

Two common variations are the Zero Insertion Force (ZIF) socket and Low

Insertion Force (LIF) socket.

As the illustration shows, you can identify a ZIF socket type by the handle

which locks/unlocks to allow placement of the Pentium OverDrive processor.

LIF sockets do not have a handle, as shown.

handle

PC-1700

PC-1701

Typical Sockets With Handle (ZIF Sockets)

Note variations in pin hole layout

Typical Socket Without Handle (LIF Socket)

Match your computer's socket layout to one shown in the chart, then proceed

to the indicated step in this manual.

486

RemovetheIntel486processorandinstallthePentium

OverDrive processor in the Intel486 processor socket. If

the Intel486 processor is not surrounded by an empty

row of pins, you cannot install the Pentium OverDrive

processor.

19 pinholes

per side

PC-1702

Empty Weitek socket beside Intel486 processor—go to Step 4.

Not an OverDrive processor socket! For

Weitek coprocessors only! Remove the

Intel486processorandinstall thePentium

OverDrive processor in the Intel486

processor socket. If the Intel486 processor

is not surrounded by an empty row of

pins, you cannot install the Pentium

OverDriveprocessor.

15 pinholes

per side

i487

Removethe Intel487 SX math coprocessor

and install the Pentium OverDrive processor

in the Intel487 processor socket. If the math

coprocessor is not surrounded by an

empty row of pins, you cannot install the

PentiumOverDriveprocessor.

If your processor is soldered to the motherboard in a surface

mount, and you do not have a separate 237 or 238 pinhole

Pentium OverDrive socket, you cannot install the Pentium

OverDrive processor. Do not attempt to remove the

originalprocessor!

No empty Pentium OverDrive processor socket—go to Step 4.

Empty socket beside Intel486 processor—go to Step 5.

Pentium OverDrive processor socket with Intel487 SX math

coprocessor installed—go to Step 4. (Intel486 SX processor

systems only)

Surface-mounted processor only—not compatible!

Possible System Layouts

If the empty socket does not contain 237

or 238 pinholes (19 pinholes per side),

you cannot install the Pentium OverDrive

processor.

486

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