Shuttle HOT-317R3 HOT-317 User's manual

317

386DX ™ MAIN BOARD

USER’S MANUAL

NOTICE

Copyright 1994.
All Rights Reserved.
Manual Version R3.0

All information, documentation, and specifications contained in this manual are
subjuct to change without prior notification by the manufacturer.

The author assumes no responsibility for any errors or omissions which may
appear in this document nor does it make a commitment to update the informa
tion contained herein.

Printed in Taiwan R.O.C. January 1994.

TRADEMARKS

• OPTi a resigtered trademark of OPTi, Inc.

• IBM PC/AT is a registered trademark of International Business Machines
Corp.

• AMI is a registered trademark of American Megatrends Inc.

• ChipAwayVirus is a registered trademark of Trend Micro Device
Incorporaed

Chapter 1. Introduction.......................................1

1.1 Preface................................................................................................1

1.2 Major Features.................................................................................. 2

1.3 317 Mainboard Description

..............................................................

3

Chapter 2. Hardware Configuration

2.1 CPU Type Description......................................................................5

2.2 Co-Processor Reset Signal

2.3 Display Type Configuration

2.4 Connectors........................................................................................7

2.5 On-board Memory Configuration...................................................9

2.6 317 Mainboard Placement...............................................................10

Chapter 3. BIOS SETUP

3.1 STANDARD CMOS SETUP........................................................13

3.2 ADVANCED CMOS SETUP.......................................................15

3.3 ADVANCED CHIPSET SETUP

Chapter 4. ChipAway Virus

4.1 Preface.............................................................................................23

4.2 What Is ChipAway Virus

4.3 Boot Viruses................................................................................... 24

4.4 ChipAway Virus Features

4.5 How ChipAway Virus Work

4.6 Keeping Your Security High...........................................................26

..............................................................

.............................................................

....................................

..................................................

...............................

................................................................

..............................................................

..........................................................

..................

5

6
6

11

19

23

23

24
25

Chapter 1

Introduction

1.1 Preface

Congratulation on purchasing this 317 mainboard. 317 mainboard
is a highly integrated system board designed to accommodate most
member of the 386 family of CPUs in 40MHz., and features a
high-performance secondary cache memory architecture of 128KB
in size. This mainboard features five 16-bit and one 8-bit Industry
Standard Architecture (ISA) bus slots which may accommodate
many third-party expansion cards.

Introduction

1

1.2 Major Feature

» Support for any member of the 386 family of CPUs running at

40MHz.

» Support five 16-bit ISA expansion slots.

» Support one 8-bit ISA expansion slot.
» Support for 128KB of secondary cache.
» Supports 2-1-1-1, 3-1-1-1, 2-2-2-1, and 3-2-2-2 cache burst

cycles.
» Support two non-cacheable regions.
» Support local high-speed, page mode flexible memory from

1MB up to 64MB.
» Shadow RAM support for the system and video BIOS.
» Support AT-bus clock selectable from CLKI/6 to CLKI/3.
» Provides AMI system BIOS with powerful ChipAway Virus

program.

» Board size : 22 cm x 17 cm.

2

Introduction

1.3 317 Mainboard Description

The major components of 317 mainboard are illustrated and
described below. Please take a minute to become familiar with the
board design.

1. System Microprocessor

317 mainboard may accept any members of the 386 family of high
performance 32-bit microprocessors in PGA or PQFP package
such as AMD Am386DX and TI/Cyrix 486DLC. The mainboard

is designed to run at a clock speed of 40 MHz.

2. System Math co-processor

317 mainboard may accept members of the 387 family of high
performance 32-bit co-processors in PGA package. The co
processor is designed to run at a clock speed of 40 MHz to
synchronize with CPU clock speed.

Introduction

3

3. Chipset ASIC

317 mainboard is designed around a set of highly integrated
OPTi ASIC, which offers optimum performance on ISA base
system with a cache controller, a local DRAM controller, and
Integrated Peripherals controller.

4. Memory Architecture

317 mainboard features eight 30-pin SIMM (Single In-Line
Memory Module) sockets and organized into two banks, which
allow flexible memory configuration and expansion. It may use
256Kx9, 1M x 9, 4Mx9, or 16Mx9 SIMMs for configuration

memory size from 1MB to 64MB.

5. Secondary Cache Architecture

317 mainboard features a secondary cache memory architecture
of 128KB in size which are 32Kx8 high speed SRAM.

6. ISA Expansion Slots

317 mainboard provides five 16-bit ISA expansion slots and one
8-bit expansion slot, which may accommodate any third-party
expansion cards and enormous flexibility in designing custom
platforms.

7. System BIOS

317 mainboard provides a licensed AMI BIOS, a particular
designed to offer optimum performance of the mainboard. The
BIOS permit easy configuration of the mainboard and the sys
tem.
317 also provides a special and powerfull anti-virus feature in
system BIOS named ChipAway Virus, it can keep your system
away from the attacking of boot-sector virus.

4

Introduction

Chapter 2

Hardware Configuration

This chapter explains how to configure the 317 mainboard’s
hardware. Before you install the mainboard on you system, you
must insert a CPU(if there are no PQFP CPU on board), install
the memory, and plug in power connector, keyboard, and others
external connectors etc..

2.1 CPU Type Decription

317 mainboard accept any member of the 386 and 486DLC series
of microprocessor at the clock speed of 40MHz. The manufac
ture range from AMD, Cyrix, and TI CPU.

Installation

b

5

2.2 Co-Processor Reset Signal

To meet the various brands co-processor(387DX) reset timing,
317 provide jumper JP10 to configure co-processor reset timing.

This jumper is reserved for testing purpose only. Please do not

change, or else may cause serious system error.

2.3 Display Type Configuration

317 provide jumper JP2 to configure system display type,

"Close" for color and "Open" for monochrome.

Display Type

Set to Color

Set to Monochrome

Close
Open

6

Installation

2. 4 Connectors

There are several connectors located on the 317 mainboard.
They are used to connect with peripheral devices to enhance the
performance of the system operation.

Connector Function

53,54 Power Connector
51
52 (Note 1) External Battery Connector

J16
JP4 Speaker Connector
JP6
JP5 (Note 2)
SI

Keyboard Connector

Power LED & KeyLock Connector

Turbo LED Connector
Hardware Turbo Switch Connector
Hardware Reset Connector

Note 1 : J2 is a four pin external battery connector, when

internal battery is used, there are a jumper cap cover on pin 2 and
pin 3. If external battery is used, please remove the jumper cap.

Pin 1

Using Internal Battery Using External Battery

Installation

7

Note 2 : JP5 is a two pin hardware turbo switch connector. The

system will run in turbo mode when JP5 is opened, and the system
will run in normal mode when JP5 is shorted.

317 mainboard also supports turbo switching by keyboard.

< Ctrl > < Alt > < + > for switching to turbo mode,

<Ctrl> <Alt> < - > for switching to normal mode.

* While using the keyboard turbo switch, the turbo LED will not

change.

8 Installation

2.5 On-Board Memory Installation

317 mainboard provides tremendous flexibility to support a num
ber of different on-board DRAM configuration. The on-board
memory is organized into two banks, with four SIMMs ( Single
In-line Memory Module) socket assigned to each bank. The
mainboard supports 256K x 9, IM X 9, 4 M X 9, and 16M x 9
page mode SIMM in each memory bank, and achieves its best
performance when every banks are filled.

The following table illustrates the partial configurations.

MEMORY CONFIGURATION TABLE

Options

BankO

Bank 1

Total

1
2
3
4
5
6
7
8
9

256K
256K

1M

256K

1M
4M
1M 4M
4M 4M

16M

None
256K
None

1M
1M

None

None

1MB
2MB
4MB
5MB

8MB
16MB
20MB
32MB
64MB

Installation

9

2.6 317 Mainboard Placement

io

Installation

Chapter 3

BIOS SETUP

317 mainboard provides the most famous system BIOS in the PC
world - AMI BIOS. This BIOS setup reference is written to assist
you in the proper usage of BIOS setting, please take a few
minutes to become familiar prior to using BIOS program.

1 After power on or reboot the system, during a series of diagnostic

checks, the following message will be display on the screen :

" Hit < DEL > if you want to run SETUP"

2 Press the < DEL> key to enter the AMI BIOS Setup program

and the following main menu screen will appear :

BIOS SETUP PROGRAM - AMI BIOS SETUP UTILITIES

(C) 1992 American Megatrends Inc., All Rights Reserved

STANDARD CMOS SETUP

ADVANCED CMOS SETUP

BIOS SETUP DER AUTO CONFIGURATION OPTION
POWER-ON DER AUTO CONFIGURATION OPTION

ADVANCED CHIP SETUP

CHANGE PASSWORD
AUTO DETECT HARD DISK
WRITE TO CMOS AND EXIT

DO NOT WRITE TO CMOS AND EXIT

Standard CMOS Setup for Changing Time, Date, Hard Disk Type, etc.

\ ESC.Exit H => ft Sel F2/F3:Color F10:Save & Exit

3 Using the up/down arrow key to choose an option item and press

< Enter >. A warning message displays each time when one of

the three setup options is selected.

11

AMIBIOS SETUP PROGRAM-WARNING INFORMATION

(C) 1992 American Megatrends Inc . , All Rights Reserved

Improper Use of Setup may Cause Problems ! !

If System Hangs, Reboot System and Enter Setup By Pressing the <DEL> Key

Do any of The following after Entering Setup

(i) Alter Options to make System Work
(ii) Load BIOS Setup Defaults
(iii) Load Power-On Defaults

Hit <ESC> to Stop now, Any other Key to Continue

4 Press < ESC > at anytime to return to the main menu.

5 In the main menu, chooseH WRITE TO CMOS AND EXIT" or

< F10 > to save your changes and reboot the system. Choosing

"DO NOT WRITE TO CMOS AND EXIT" ignores your changes

and exits the programs.

6 Listed below is an explanation of the key display at the bottom of

the screens accessed through the BIOS setup program :

PageUp/PageDn

12

Key Pad

ESC

Arrow Keys

FI

F2/F 3

F5

F10

Usage

Exit to previous screen
Move cursor to the desired selection
Modify the default value of the options for the

highlightes feature
Displays help screen for selected feature
Changes beckground and foreground colors
Retrieves the values which were resident when cur

rent setup session was started
Saves all changes made to Setup and Exit program

BIOS Setup

3.1 STANDARD CMOS SETUP

Choose the" STANDARD CMOS SETUP" from the main menu
and listed screen will display.

Use the arrow keys to move between items and to select values.
Mofify the selected fields using the PageUp/PageDown keys.
Some fields let you enter numeric values directly.

BIOS SETUP PROGRAM - STANDARD CMOS SETUP

( C ) 1992 American Megatrends Inc., All Rights Reserved

Date ( mon/date/year)
Time ( hour/min/sec )

Hard disk C : Type
Hard disk D : Type
Floppy drive A :
Floppy drive B :
Primary display
Keyboard

Month

: Jan, Feb,

....

Date

: 01, 02, 03,

Year

: 1901, 1902,...

ESC: Exit <= =£► I Select F2/F3 : Color Pu/Pd : Modify

...

....

..... 31

....

: Mon, Nov, 18, 1993 Base memory : 640 KB
: 05 : 54 : 48 Ext. memory : 3712 KB

: 17 977
: Not Installed

: 360 KB, 51/4”
: Not Installed
: Monochrome
: Installed

, Dec

2009

Cyln Head W/Pcom LZone Sect Size

Sun

30

6
13 14
20

27

3 4

300 977

Mon

31

7

21
28

17 41MB

Tue Wed Thu

1 2 3 4
8

9 10 11
15 16 17
22 23
29 30

5

6

Fri

18 19

24 25 26

31

1 2

7

8 9

Sat

Date Please type the current date.
(mn/date/year)

Time Please type the current time.

(hour:min:sec)

Hard disk C : Select the primary hard disk drive from the

standard hard disk types 1 to 46, and type 47 is
user definable. If there are no hard disk drive
installed, choose" Not installed."

5

12

BIOS Setup

13

Hard disk D :

Select the secondary hard disk drive from the
standard hard disk types 1 to 46, and type 47 is
user definable. If there are no hard disk drive
be installed, choose" Not installed."

Floppy Disk

Drive A

Select 360 KB , 5 1/4" (default)

1.2 MB , 51/4"
720 KB , 31/2"

1.4 MB , 31/2"

2.88MB, 3 1/2"
Not Installed

Floppy Disk
Drive B

Select 360 KB, 51/4"

1.2 MB , 51/4"
720 KB , 3 1/2"

1.4 MB , 31/2"

2.88MB, 3 1/2"
Not Installed (default)

Primary Display Select Monochrome, (default)

Color 40 X 25,
VGA/EGA/PGA ,

Color 80 x 25,
Not Installed

Keyboard

Select Installed (default) or Not Installed.

When you finished with the Standard CMOS Setup, press

< ESC > key to return to the main menu.

14

BIOS Setup

3. 2 ADVANCED CMOS SETUP

The ADVANCED CMOS SETUP is the second option from the
main setup menu.
Let the highlighted bar stay at "ADVANCED CMOS SETUP"
and press < Enter >, the following screen appear.

BIOS SETUP PROGRAM - ADVANCED CMOS SETUP

( C ) 1992 American Megatrends Inc., All Rights Reserved

Above 1 MB Memory test
Memory Test Tick Sound
Hard Disk Type 47 RAM Area
System Boot Up Num Lock

Floppy Drive Seek At Boot
System Boot Up Sequence
System Boot Up CPU Speed
External Cache Memory
Internal Cache Memory
Turbo Switch Function
Password Checking Option
Adaptor ROM Shadow C800, 16K
Adaptor ROM Shaodw CCOO, 16K
Adaptor ROM Shadow D000, 16K.
Adaptor ROM Shadow D400, 16K
Adaptor ROM Shadow D800, 16K
Adaptor ROM Shadow DCOO, 16K
Adaptor ROM Shadow E000, 16K

Adaptor ROM Shadow E400, 16K

Disabled
Enabled
0:300
On
Enabled
A:, C:
High
Enabled
Disabled
Enabled
Setup
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled

Adaptor ROM Shadow E800, 16K
Adaptor ROM Shadow EC00, 16K
Shadow RAM Option
IDE Block Mode Transfer
ChipAway Virus

: Disabled
: Disabled
: Both
: Disabled
: Enabled

ESC: Exit <= ft ^ :
F5 : Old Values F6 : BIOS Setup Defaults F7 : Power-On Defaults

: Sel (Crtl) Pu/Pd : Modify FI : Help F2/F3 :

BIOS Setup

Color

15

» Above 1 MB

Memory Test

If there are more than 1 MB of RAM on
system board, by enabling this option, will
involve the POST memory routines will
check the RAM above 1 MB. If disabled, the
BIOS only check the first 1 MB RAM.

» Memory

Test Tick Sound

» Hard Disk Type

47 Data Area

» System Boot Up

Num Lock

» Floppy Drive

Seek At Boot

» System Boot Up

Sequence

This option will enable or disable the ticking

sound during RAM test.

The BIOS setup features two user-definable
hard disk types. Normally, the data for these
disk types are stored at 0:300 in lower system
RAM. If a problem occurs with other

software, this data can be located at the
upper limit of the DOS shell (640KB). If the
option is set to "DOS 1 KB", the DOS shell is
shortened to 639 KB, and the top 1 KB is
used for the hard disk data storage.

When this option is turned on, it may allow

the user to use the numeric key on the en
hanced keyboard numeric keypad when the
system is powered on.

This option enable or disable seeking floppy

drive A: when the system boots-up. Disable

it to allow a fast boot and to decrease the

possibility of damage to floppy drive heads.

If the option is set to "C:, A:", the system will
attempt to boot from hard disk drive C:, and
then A:. If the option is set to "A:, C:", the

sequence is reversed. (Note: "A:, C:" must
match the enabling of floppy drive seek at

boot)

BIOS Setup

» System Boot Up

CPU Speed

If the option is high, the system will boot-up
in turbo mode, when turbo switch JP5 is set to
turbo (open); and the system will boot-up in
normal mode when turbo switch JP5 is to

normal (close). If the option is low, the system
will boot-up and run in normal mode always.

» External Cache

Memory

» Internal Cache

Memory

» Password

Checking Option

» Adaptor ROM

Shadow xxxx, 16K

» Shadow RAM

Option

With this feature, the user may specify
whether the external cache memory is enable

or disable.

On TI/Cyrix 486DLC, the cache memory built

inside of CPU is called internal cache

memory, with this option, the user may enable

or disable the internal cache memory.

The password checking feature can be used

to prevent unauthorized system boot-up or

unauthorized use of BIOS SETUP. There are

two options in this item, " SETUP " and "

ALWAYS".

ROM shadow is a procedure in which BIOS

code is copied from slower ROM to faster

RAM. Each option allows for a segment of

16 KB to be shadowed from ROM to RAM,

if these options are enabled.

In this item available options are " Disabled

"," Video " , " Main "," Both ". The same

concept applies here as above. If you chose"

Both ", then system and video BIOS will be

shadowed. Setting" Main", only system BIOS

will be shadowed, and " Video " will shadow

the video ROM in RAM instead.

BIOS Setup

17

» IDE Block Mode If your hard disk drive support IDE Block

Transfer Mode, enable this option for faster data trans

fer.

» ChipAwayVirus

317 support this feature for a hardware-based
anti-virus to control of the system very early
in the boot process before DOS to detect and

clean all viruses especially effective against
Boot Viruses.
If this feature is enabled, it will occupy about
2KB memory in base memory.

1 8 _______________

BIOS Setup

3. 3 ADVANCED CHIPSET SETUP

This program of the BIOS Setup is entirely chip set specific, and

is used to change the values of chipset registers. These registers
control most of the system options in the computer. By using
arrow keys you make highlighted bar stay at "ADVANCED
CHIPSET SETUP" then press < Enter >. The following screen
will be displayed.

BIOS SETUP PROGRAM - ADVANCED CHIPSET SETUP

( C ) 1992 American Megatrends Inc., All Rights Reserved

Hidden Refresh
AT Bus Clock Selection
Memory Read Wait States
Memory Write Wait States
Cache Read Cycle
Cache Write Wait States

Non-Cacheable Block-1 Size
Non-Cacheable Block-1 Base
Non-Cacheable Block-2 Size
Non-Cacheable Block-2 Base 0KB
Cacheable RAM Address Range

Video BIOS Area Cacheable

Enabled

c m /5
1 w/s
1 w/s

2-1-1-1
1 W/S
Disabled
0KB
Disabled

32 MB

Yes

ESC : Exit <= ft => H : Sel (Crtl) Pu/Pd : Modify FI : Help F2/F3 : Color
F5 : Old Values F6 : BIOS Setup Defaults F7 : Power-On Defaults

BIOS Setup

m

Hidden
Refresh

Hidden refresh is performed independent of
the CPU, as long as the CPU does not try to
access local memory or the AT bus during a
hidden refresh cycle, refresh will be transparent
to the CPU. The CPU can continue to execute
from its internal cache and execute internal
instructions during hidden refresh without any
loss in performance due to refresh arbitration.

AT Bus Clock

Selection

Memory Read
Wait State

Memory Write
Wait State

Cache Read
Cycle

This feature allows the user to select the AT bus
clock that derive from system clock, on system
clock speed of 40MHz. CLKI/5 will get 8MHz
clock speed on AT bus, CLKI/4 will get 10MHz
clock speed on AT bus and CLKI/3 will get

13.3MHz clock speed on AT bus.

This feature allows the user to select the
memory read settings, zero, one or two memory
read wait state. The optimal setting depends on
CPU clock speed, one memory read wait state
for clock speed of 40MHz.(default).

This feature allows the user to select the
memory write settings, zero, one, two, or three
memory write wait state. The optimal setting
depends on CPU clock speed, one memory
write wait state for clock speed of
40MHz.(default).

This feature allows the user to select four cache
read burst settings, 2-1-1-1, 3-1-1-1, 2-2-2-2, or
3-2-2-2. The optimal setting depends on CPU
clock speed, 2-1-1-1 for clock speed of
40MHz. (default).

» Cache Write

Wait State

This feature allows the user to select be

tween three cache write settings, zero, one, or
two cache write wait state. The optimal setting
depends on CPU clock speed, one memory
write wait state for clock speed of 40MHz.
(default).

» Non-Cacheable

Block -1 Size

» Non-Cacheable

Block-1 Base

» Non-Cacheable

Block - 2 Size

» Non-Cacheable

Block - 2 Base

» Video BIOS

Area Cacheable

This feature provide one of two non-cacheable
block on system memory. The options block
size are 64KB, 128KB, 256KB, 512KB or Dis
abled.

This feature assign the second non-cacheable
block base address on system memory.

This feature provide the other one non-cache
able block on system memory. The options
block size are 64KB, 128KB, 256KB, 512KB, or
Disabled.

This feature assign the first non-cacheable
block base address on system memory.

This option puts the Video BIOS routines in

cacahe to improve video efficiency. This option

is Yes by default. If compatibility problems
arise, you may set this option to No.

BIOS Setup

21

This Page Is Left Blank Intentionly

22 BIOS Setup

Chapter 4

ChipAway Virus

4.1 Preface

Welcome to use the 317 main board with the finest computer
security solutions available today. ChipAway Virus will easily
give you a high-security computing environment for years to
come. ChipAway Virus is easy to use and very effective.

4. 2 What Is ChipAway Virus ?

Since you enabled the ChipAway Virus feature on ADVANCED
CMOS SETUP of System BIOS, you probably already realize the
inherent benefits in this hardware-based anti-Virus solution.

The single most important attribute of anti-Virus of 317 is that it
features preemptive virus action. This technology, called
JumpLoading™ allows ChipAway Virus to gain control of your

system very early in the boot process — even before DOS. Since
all viruses, by their very nature, rely on DOS as their habitat
(living environment), they are completely helpless against a sys
tem that features JumpLoading™.

ChipAway Virus

22

4. 3 Boot Viruses

ChipAway Virus of 317 is especially effective against Boot
Viruses. Some of the most dangerous Boot Viruses, such as
Stoned, Michaelangelo, Disk Killer, etc..

Boot Viruses are extremely dangerous because of the way they
infect computers during the load process. During a normal boot
process, the boot sector is loaded long before the user (or the
AUTOEXEC.BAT file) gains control of the system. Therefore,
even with the best anti-virus software, a boot virus can easily infect
the system.

4. 4 ChipAway Virus Features

JumpLoading™ Boot Virus Protection

As mentioned above, this protection method means that Chip
Away Virus is protecting your system long before any virus has a
chance to load.

Auto-checking of floppy diskettes when they are accessed

Even when you are using your computer, ChipAway Virus is
protecting you by quicklty checking your floppy disks as you
access them. Does this slow the system down? Not at all. The
few milliseconds that it takes to check a floppy disk boot sector
are totally unnoticeable.

Additional anti-virus software

Just to give you even more peace of mind, 317 main board
attached some anti-virus software that you can use to scan for
viruses other than boot-sector viruses. With this software, 317
represent a whole solution against every type of virus.

24

ChipAway Virus

4. 5 How ChipAway Virus Work

Since ChipAwayVirus is auto-checking of floppy diskettes when
they are accessed, and when a virus is found, the warning message
will be display.

ChipAwayVirus Warning

Boot sector on diskette is infected
by a virus.
Do not boot the system from this
diskette.

Press any key for instructions.

This means the boot sector on floppy diskette that you are using
is infected by a virus and may not boot the system from this
diskette.

Then you may take off this floppy diskette from floppy drive and
trun off the power to avoid system infected by diskette, or just
press any key simply for next instruction and the following mes
sage will be display.

Do you want to CLEAN your floppy diskette
or LEAVE it unchange ?

[ C ] - CLEAN boot sector of floppy

[ L ] - LEAVE it unchange.

ChipAwayVirus may ask for instruction input by pressing" C " or

" L " key.
"C" for clean virus from boot sector of floppy diskette.
" L " for leave it unchange.
Normally, pressing" C " is recommend.

ChipAway Virus

25

4.6 Keeping Your Security High

Keeping your computer free from intruders and viruses isn’y

alway easy, but it is simple. Now that you have anti-viruses
feature, you have taken care of most security issues that can
damage your hard drive. However, in any computing environ
ment that you may use today or in the future, it’s always a good
idea to follow these guidelines :

» Never boot from floppy disk unless you know they are virus-

free.

» Always scan programs before you install them (this includes

from new diskette).

» Always scan programs that you downloaded before executing

them.

» If you operate in a network environment, get some kind of

server-based anti-virus protection.

» Do not give free access of your computer to other people.
» Always use a nde-based anti-virus product that is not extreme

ly dependent on pattem updates.

By following these guidelines, and by using 317 anti-virus feature,
you should be able to work productively in a virus-free environ

ment.

2£

ChipAway Virus

FCC N otice:

This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of 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 properly. In strict
accordance with the 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 interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to
try to corrrect the interference by one or more of the following measures :

5j(

Reorient or relocate the receiving antenna.

&

Increase the separation between the equipment and receiver.
Connect the qeuipment into an outlet on a circiut different from

that to which the receiver is connected.
Consult the dealer or an experienced radio/television technician

for help and for additional suggestions.

The user may find the following booklet prepared by the Federal

Communications Commission helpful "How to Identify and Resolve

Radio-TV Interference Problems." This booklet is available from the U.S.

Government Printing Office. Washington, DC 20402, Stock No.

004-000-00345-4

FCC Warning

The user is cautioned that changes or modifications not expressly approved
by the manufacturer could void the user’s authority to operate this
equipment.

Note : In order for an installation of this product to maintain

compliance with the limits for a Class B device, shielded cables and
power cord must be used.