

                            Ц· ·Ц Ц· Ц· Ц· ЦТ· Ц· Ц·
                            З¶ єє З¶ єє У·  є  З¶ ЗЅ                            
                            ЅУ У/ ЅУ ЅУ УЅ  Р  ЅУ ЅУ                            
                                      100e


        Avanstar 100e
        Hardware Installation Guide


        Manual Part Number:  650126-04
        CONTENTS

        Notices & Warnings      i

        Chapter 1               Introduction                       1
                1.1     General Description                        1
                1.2     Physical Description                       2
                1.3     System Requirements                        3
                1.4     Application Options                        3
                1.5     Application Flexibility For Programmers    4

        Chapter 2               Installation                       5
                2.1     Handling Precautions                       5
                2.2     Board Installation                         5
                2.3     External Panel Connection                  6
                2.4     Connecting Peripherals                     7
                        2.4.1   Non-Configurable External Panels   8
                        2.4.2   Configurable External Panels       9
                2.5     System Configuration                      11

        Chapter 3       Hardware                                  13
                3.1     Introduction                              13
                3.2     Central Processing Unit (CPU)             13
                3.3     Universal Asynchronous Receiver
                        Transmitter (UART)                        13
                3.4     Random Access Memory (RAM)                14
                                3.4.1           Local RAM         14
                                3.4.2           Dual Port RAM     14

        Appendices
                A.              Avanstar 100e Specifications      15

        Customer Assistance                                       16

        Limited Warranty                                          17

        Avanstar 100e Hardware Installation Guide
        c 1993 by Star Gate Technologies, Inc.
        Printed in U.S.A.


All brand and product names are trademarks or registered trademarks of their
respective companies.

SPECIFICATIONS NOTICE
Star Gate Technologies does not assume any liability arising from either the
application or the use of any product or circuit described in this manual.

We also reserve the right to make changes to any product to improve
reliability, function, or design. Therefore, specifications are subject to
change without notice.

This manual has been carefully checked, and its information is believed to
be reliable.  However, no responsibility is assumed for inaccuracies.


This information does not give the purchaser any license under the patent
rights of the manufacturer, or others.



RFI WARNING NOTICE
We recommend that all devices connected to this product have shielded cables
with metal RFI/EMI connector hoods.

FCC NOTICE
This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to part 15 of the FCC Rules.  These limits
are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment.  This equipment
generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful
interference to radio communications.  Operation of this equipment in a
residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.

The user is encouraged to try to correct the interference by one or more of
the following measures:

        щ       Reorient the receiving antenna.

        щ       Move the computer further from the receiver.

        щ       Plug the computer into an AC outlet on a different branch
                circuit from the receiver's.

        щ       Reorient or shorten the peripheral equipment cables.

If necessary, ask the dealer or an experienced radio/television technician
for other suggestions.  You may also find help in an FCC booklet called,
"Interference Handbook-1990."  To order this handbook, send a request for
Stock Number 004-000-00482-5 to the Superintendent of Documents, U.S.
Government Printing Office, Washington, D.C., 20402-9325.  A fee must also
be enclosed with your order.  Call the U.S. Government Printing Office at
(202)783-3238 to determine the amount of the fee.


                CHAPTER 1
                Introduction


        1.1     General Description
The Avanstar 100eTM adapter from Star Gate Technologies is an intelligent
expansion board that adds either 8 or 16 serial ports to an EISA bus personal
computer.  Star Gate drivers will support up to four Avanstar 100e boards in
a host PC.

The adapter relieves the PC of communication responsibilities while
supporting serial devices like terminals, printers, plotters, video displays,
modems, and other computers.

To control wiring clutter and simplify connections, the serial ports are
located on an external connection panel which is connected to the board by a
cable.

There are four types of external panels available:

        (1)     8 port, EIA-232 non-configurable external panel
        (2)     8 port, EIA-232/422 configurable external panel
        (3)     16 port, EIA-232 non-configurable external panel
        (4)     16 port, EIA-232/422 configurable external panel

External panels 1 and 2 provide eight ports; external panels 3 and 4 provide
sixteen ports.  Any of the ports on the configurable external panels
(panels 2 and 4) can be set up as either EIA-232 or EIA-422 through software
control.

1.2     Physical Description
The Avanstar 100e package consists of seven separate items (listed roughly
in order of unpacking):

1.      Avanstar 100e Hardware Installation Guide
        For future reference, you may want to place this guide in the
        Guide to Operations binder supplied with the computer.

2.      Device Driver Installation Manual
        This manual describes how to install and use the device driver
        software.

3.      Avanstar 100e Configuration Diskette
        This diskette contains the Configuration File (.CFG) used by
        the EISA Configuration Utility.

4.      Avanstar 100e Driver Diskette
        This diskette contains the device driver and support files for
        the Avanstar 100e adapter.

5.      Avanstar 100e adapter board

6.      Cable to connect board to external panel

7.      External panel

1.3     System Requirements
The following system requirements must be met for proper operation of the
Avanstar 100e adapter:

        щ    The host computer must have an EISA bus architecture.

        щ    One 32-bit EISA bus expansion slot must be available for
             each Avanstar 100e adapter used.

        1.4     Application Options
The Avanstar 100e package is designed for maximum application flexibility
with minimum effort.  Configuration of the PC for operation with the adapter
is done with the EISA Configuration Utility diskette and the Avanstar 100e
Configuration Diskette.  This software allows you to:

        щ       assign the dual port boundary addresses anywhere in the first
                megabyte of the system address space on any 32K byte (8000
                hex) boundary.

        щ       select interrupt-driven operation using any one of the eight
                interrupt request levels provided by the adapter.  Or, it allows
                you to disable interrupt-driven operation.

        1.5     Application Flexibility For Programmers
The Avanstar 100e adapter is mainly a device to enhance communications, but
it has the processing power to do other tasks as well.  With additional
programming by the user, the Avanstar 100e adapter can:


        щ       perform line discipline functions, such as local terminal
                emulations and character conversions.

        щ       perform file-oriented algorithms (such as data compacting)
                on an inter-channel basis.  For example, a file can be
                received through one port, processed, then retransmitted
                through the same, different, or multiple ports simultaneously.

        щ       reconcile format differences without host computer
                intervention. This makes it appear as if one device is
                directly compatible with another system even though the
                actual format is different.  An example would be an
                intelligent repeater which converts ASCII to EBCDIC.


        NOTE
        If you are interested in programming, call 1-800-STAR GATE
        (1-800-782-7428) and order the Avanstar Family Developer's Kit
        from Technical Support.

        
        CHAPTER 2
        Installation


        2.1     Handling Precautions


        CAUTIONS
        The Avanstar 100e adapter board contains several components
        that may be permanently damaged if the adapter is handled
        improperly.  To avoid accidental damage, follow these recommendations:

                щ       Before handling the board, touch a grounded object to
                        discharge any static electricity that has built up
                        on your body.

                щ       Never insert or remove the board while power is
                        applied to the computer.  Once the computer power
                        switch is shut off, wait at least 10 seconds for the
                        power supply to discharge before inserting or
                        removing the adapter.

                щ       Never insert or remove the board-to-panel interface
                        cable while power is applied to the computer.

                щ       Hold the board only by its edges.


        2.2     Board Installation
The Avanstar 100e adapter board may be installed into any computer with EISA
bus or compatible architecture.

        Follow these steps:

        1.      Place the computer, monitor and all peripheral device POWER
                switches in the OFF position.

        2.      Unplug the computer, monitor and all peripheral device line
                cords from their outlets.

        3.      In the Guide to Operations manual supplied with the computer,
                follow the instructions for removing the computer cover and
                installing an adapter board.

        4.      The Avanstar 100e adapter board may be installed in any EISA
                expansion slot.  After you select a slot, loosen the retainer
                screw located at the bottom of the slot.

        5.      Remove the expansion slot's cover by sliding it up and out.

        6.      Holding the Avanstar 100e board, align the board edge
                connector with the expansion slot connector.  Firmly press
                the board straight down into the expansion slot connector.
                Make sure that the adapter is pushed in all the way.

        7.      Tighten the retainer screw to secure the board.

        8.      After installing the board, follow the instructions in the
                Guide to Operations manual for replacing the cover.


                NOTE
        To remove the adapter board, follow these steps in reverse.


        2.3     External Panel Connection
Use the supplied cable to connect the external panel to the Avanstar 100e
adapter.
          Follow these steps:

        1.      Make sure the host PC power is OFF before plugging (or
                unplugging) the interface cable.

        2.      Plug either end of the interface cable into the 62-pin
                receptacle on the external panel.

        3.      Plug the other end of the interface cable into the
                receptacle on the Avanstar 100e adapter.


        NOTE
        The receptacles for both the Avanstar 100e adapter and the external
        panel have 62 pins.  The straight-through interface cable connects
        corresponding pins on each of its ends.  Make sure that the external
        panel and interface cable are properly connected to the adapter board
        prior to applying power to the system.  If the external panel is not
        attached, the on-board program software will detect a non-functional
        panel and will report an error during download.


2.4     Connecting Peripherals
Depending on the external panel you ordered, up to eight or up to sixteen
serial devices may be connected to the ports on the external panel.  Connect
the peripheral's serial cable to any one of the ports available on the
external panel.

Pin assignments for EIA-232 compliance are identified in the next table.
If a particular peripheral device doesn't require the modem handshake
signals, only pins 2, 3 and 7 need be used.  We recommend connecting only
the necessary signals in the EIA-232 interface cable.


                TABLE 2.1 -  EIA-232 Serial Port Data Connections

        Pin    Signal     Description           Input/Output
        1      Shield     Protective Ground
        2      TXD        Transmitted Data        output
        3      RXD        Received Data           input
        4      RTS        Request to Send         output
        5      CTS        Clear to Send           input
        6      DSR        DCE Ready               input
        7      GND        Signal Ground
        8      DCD        Received Line           input
                          Signal Detector
        20     DTR        DTE Ready               output
        22     RI         Ring Indicator          input


2.4.1   Non-Configurable External Panels
Each port on the 8-port and the 16-port non-configurable external panels is
a 25-pin female receptacle.  Each port is wired for compliance with
Electronic Industry Association standard EIA-232 for Data Terminal Equipment
(DTE).


                    ЪДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДї
                    і         ЪДї  ЪДї  ЪДї  ЪДї    і
                    і         і і  і і  і і  і і    і
                    і         і і  і і  і і  і і    і
                    і         і і  і і  і і  і і    і
                    і J1      і і  і і  і і  і і    і
                    і ЪДї     АДЩ  АДЩ  АДЩ  АДЩ    і
                    і і і     P1   P2   P3   P4     і
                    і і і                           і
                    і і і                           і
                    і і і                           і
                    і і і                           і
                    і і і     P5   P6   P7   P8     і
                    і АДЩ     ЪДї  ЪДї  ЪДї  ЪДї    і
                    і         і і  і і  і і  і і    і
                    і         і і  і і  і і  і і    і
                    і         і і  і і  і і  і і    і
                    і         і і  і і  і і  і і    і
                    і         АДЩ  АДЩ  АДЩ  АДЩ    і
                    АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ


FIGURE 2.1 - Serial Ports on the 8-Port Non-Configurable External Panel



           ЪДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДї
           і          ЪДї  ЪДї  ЪДї  ЪДї  ЪДї  ЪДї  ЪДї  ЪДї   і
           і          і і  і і  і і  і і  і і  і і  і і  і і   і
           і          і і  і і  і і  і і  і і  і і  і і  і і   і
           і  J1      і і  і і  і і  і і  і і  і і  і і  і і   і
           і  ЪДї     АДЩ  АДЩ  АДЩ  АДЩ  АДЩ  АДЩ  АДЩ  АДЩ   і
           і  і і     P1   P2    P3   P4   P5   P6  P7   P8    і
           і  і і                                              і
           і  і і                                              і
           і  і і     P9   P10  P11  P12  P13  P14  P15  P16   і
           і  АДЩ     ЪДї  ЪДї  ЪДї  ЪДї  ЪДї  ЪДї  ЪДї  ЪДї   і
           і          і і  і і  і і  і і  і і  і і  і і  і і   і
           і          і і  і і  і і  і і  і і  і і  і і  і і   і
           і          і і  і і  і і  і і  і і  і і  і і  і і   і
           і          АДЩ  АДЩ  АДЩ  АДЩ  АДЩ  АДЩ  АДЩ  АДЩ   і
           АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ


2.4.2   Configurable External Panels
Each port on the 8-port and the 16-port configurable external panels is a
25-pin female receptacle.  Although the ports on configurable external panels
default to EIA-232, you can change the interface of any or all ports to
EIA-422 through software control.  See the driver manual for a description
of the utility to do this.  See the Avanstar Family Technical Reference
Manual for the programming details to change the interface type directly.

There are two LEDs adjacent to each port on the external panel to indicate
which interface is active.  A lit green LED indicates that the EIA-232
interface is active for that port; a lit yellow LED indicates that the
EIA-422 interface is active for that port.  Only one LED is lit at a time
for each port.



                    ЪДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДї
                    і         oo   oo   oo   oo     і
                    і         ЪДї  ЪДї  ЪДї  ЪДї    і
                    і         і і  і і  і і  і і    і
                    і         і і  і і  і і  і і    і
                    і         і і  і і  і і  і і    і
                    і J1      і і  і і  і і  і і    і
                    і ЪДї     АДЩ  АДЩ  АДЩ  АДЩ    і
                    і і і     P1   P2   P3   P4     і
                    і і і                           і
                    і і і                           і
                    і і і                           і
                    і і і                           і
                    і і і     P5   P6   P7   P8     і
                    і АДЩ     ЪДї  ЪДї  ЪДї  ЪДї    і
                    і         і і  і і  і і  і і    і
                    і         і і  і і  і і  і і    і
                    і         і і  і і  і і  і і    і
                    і         і і  і і  і і  і і    і
  Green LED=232     і         АДЩ  АДЩ  АДЩ  АДЩ    і
  Yellow LED=422    і          oo  oo   oo   oo     і
                    АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ

FIGURE 2.3 - Serial Ports on the 8-Port Configurable External Panel

             ЪДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДї
             і          oo   oo   oo   oo   oo   oo   oo   oo    і
             і          ЪДї  ЪДї  ЪДї  ЪДї  ЪДї  ЪДї  ЪДї  ЪДї   і
             і          і і  і і  і і  і і  і і  і і  і і  і і   і
             і          і і  і і  і і  і і  і і  і і  і і  і і   і
             і  J1      і і  і і  і і  і і  і і  і і  і і  і і   і
             і  ЪДї     АДЩ  АДЩ  АДЩ  АДЩ  АДЩ  АДЩ  АДЩ  АДЩ   і
             і  і і                                              і
             і  і і                                              і
             і  і і                                              і
             і  і і                                              і
             і  АДЩ     ЪДї  ЪДї  ЪДї  ЪДї  ЪДї  ЪДї  ЪДї  ЪДї   і
             і          і і  і і  і і  і і  і і  і і  і і  і і   і
             і          і і  і і  і і  і і  і і  і і  і і  і і   і
             і          і і  і і  і і  і і  і і  і і  і і  і і   і
             і          АДЩ  АДЩ  АДЩ  АДЩ  АДЩ  АДЩ  АДЩ  АДЩ   і
             і          oo   oo   oo   oo   oo   oo   oo   oo    і
             АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ
              Green LED= RS232
              Yellow LED= RS422


FIGURE 2.4 - Serial Ports on the 16-Port Configurable External Panel


Pin assignments for EIA-422 compliance are identified in Table 2.2.
No connections should be made to pins not listed.


        TABLE 2.2 - EIA-422 Serial Port Data Connections

        Pin                Signal             Description
        11                 TXD+               Transmit Data High
        13                 RXD+               Receive Data High
        14                 TXD-               Transmit Data Low
        16                 RXD-               Receive Data Low


        2.5     System Configuration
After the Avanstar 100e adapter is installed, the computer must be configured
to recognize and initialize the adapter.  To do this, it will be necessary to
run the EISA configuration utility supplied with the computer.  See the
documentation supplied with the computer for instructions on using the EISA
configuration utility.

Although every EISA configuration utility is different, the following general
instructions can be used.

        1.      Enter the executable command to activate the EISA
                configuration utility.

        2.      Select the "Configure" option in the menu.

        3.      When you are asked for the configuration file, insert the
                Star Gate-supplied Avanstar 100e EISA Configuration diskette
                into the floppy disk drive of your computer.  The Avanstar
                100e EISA Configuration diskette contains the following file:

                                !SGT0101.CFG

                This configuration file lists the dual port memory addresses
                and IRQs which may be assigned to the Avanstar 100e.

        4.      Follow the on-screen messages and select the Avanstar 100e
                board for configuration.

        5.      Select a dual port address that does not conflict with other
                hardware in the system.  The same dual port address can be
                shared by all Avanstar 100e boards (and all Avanstar Family
                boards) installed in the system.  The following addresses
                are valid locations for the dual port.  These addresses are
                all on a 32K byte boundary and within the first megabyte.


                                A0000   A8000
                                B0000   B8000
                                C0000   C8000
                                D0000   D8000
                                E0000

                The configuration utility will inform you of dual port address
                conflicts.

        6.      Select the IRQs for the boards.  An Avanstar 100e board
                cannot share an IRQ with any other board except another
                Avanstar 100e board.  Multiple Avanstar 100e boards can
                share the same IRQ.  The IRQs that can be selected are
                3, 4, 5, 9, 10, 11, 12, and 15.  The configuration utility
                also allows interrupts to be disabled.  See the device driver
                manual for specific instructions regarding interrupt
                enabling/disabling and selection.

        7.      Save the configuration.

        8.      Exit from the EISA configuration utility.

        9.      Reboot the computer.

After you successfully complete this procedure, go to the installation manual
for the software driver and load the driver software.

        CHAPTER 3
        Hardware


        3.1     Introduction
This section lists the major hardware circuits of the Avanstar 100e adapter
and describes their functions.


        3.2     Central Processing Unit (CPU)
The on-board CPU is a 16 MHz Intel 80C186.  Its main task is to service the
UARTs (described below).  Also, the CPU reads and processes commands and
data from the dual port memory that originate from the application program.
This operation minimizes the overhead associated with moving data between
the application program and the peripheral.

The 80C186 processor comes from the same family of CPUs as those used in most
EISA personal computers.  As a result, you can use the PC itself to write
application programs to be downloaded and run on the Avanstar 100e adapter.



        3.3     Universal Asynchronous Receiver Transmitter (UART)
Communication between the Avanstar 100e adapter and peripheral devices is
handled by a UART device.  The Avanstar 100e contains four RISC-based CD1400
quad UARTs.  Each device provides four independent, full duplex, serial
communication channels.  For each channel, the specifications for operating
mode, data format, baud rate, and protocol are completely under program
control.  Each channel contains a 12-byte transmit and a 12-byte receive
FIFO to further enhance system throughput.

        3.4     Random Access Memory (RAM)
There are two different sections of RAM memory on the Avanstar 100e.

        1. Local RAM
        2. Dual port RAM


        3.4.1   Local RAM
        The local RAM:

        щ       consists of 64K bytes of static RAM

        щ       contains any software that has been downloaded

        щ       stores the temporary data needed for Avanstar 100e program
                operation


        3.4.2   Dual Port RAM

The Avanstar 100e adapter communicates with the host via dual port memory.
Dual port memory, which consists of 32K bytes of RAM, is a hardware
configuration which allows two processors to share the same physical memory.
This is an efficient means of communicating data or commands between the CPU
on the Avanstar 100e adapter and the CPU in the host.

Because both CPUs cannot access this memory at the same time, an arbiter
circuit is put between the memory and the CPUs.  The arbiter determines which
CPU may gain access to the dual port memory.

The arbiter handles simultaneous requests by granting access on a
predetermined priority basis.  The host CPU is given higher priority than
the Avanstar 100e CPU.  However, if one CPU requests access to the memory
while the other CPU already has access, the arbiter will activate the "wait"
line of the requesting CPU.  Thus, the longest either CPU must wait to gain
access is the maximum cycle time of the other CPU connected to the dual port
memory.

More information on the dual port memory can be found in the Avanstar Family
Technical Reference Manual.  Call 1-800-STAR GATE (1-800-728-7428) and ask
Technical Support for a copy if you would like more programming information.

        Appendix  A
        Avanstar 100e Specifications


        TABLE A1  -  Communication Parameters
        Number of Channels              8 or 16

        Interface Format                Asynchronous

        Software Program                Parity:  even, odd, mark, space or
                                        none.
        Choices                         
                                        Character length:  5, 6, 7 or 8 bits
                                        Stop bit length:  1 or 2 bits.

        Baud Rate                       50 to 115,200 baud per channel

        Board to Panel                  62-position D-shell style
        Interface Cable                 connectors, female plug on each end

        External Panel                  8 or 16 25-pin D-style
                                        connectors, female receptacle
                                        (DTE configured)

        TABLE A2  -  EISA Parameters
        Interrupts                      IRQ 3, 4, 5, 9, 10, 11, 12,15 or
                                        disable via EISA configuration
                                        registers

        Typical Power                   16 ports:                8 ports:
        Consumption                     +5 V at 2A              +5V at 2A
                                        +12V at 30mA            +12V at 15mA
                                        -12V at 87mA            -12V at 43mA

        Temperature                      0 to 55OC (operating)
                                        -10 to 70OC (storage)


        Customer Assistance

For Customer Service or Sales, call 1-800-STAR GATE (1-800-782-7428) from 8
a.m. to 6 p.m., Eastern Standard Time.  For your convenience, we have
extended Tech Support hours from 7:30 a.m. to 7 p.m., E.S.T.

If you still need technical assistance after reading this manual, please call
and ask for Technical Support.  Our specialists will try to provide solutions
over the phone.

If you face a shipment or order processing difficulty, please ask for Customer
Service.  An experienced Customer Service representative will be pleased to
assist you.

If you have any comments, suggestions, or corrections regarding this manual,
please make photo-copies of the affected pages, indicate your comments on
the copies, and mail or FAX the copies to the address or FAX number below.

                        FAX (216) 349-1978
                        Star Gate Technologies, Inc.
                        Attn: Technical Documentation Dept.
                        29300 Aurora Road
                        Solon, Ohio 44139
        LIMITED WARRANTY
Star Gate Technologies, Inc., warrants the Avanstar 100e Adapter Board
against defective materials or workmanship for a period of one (1) year from
the date of original purchase.

This limited warranty is void if the hardware has been damaged by accident,
improper modifications, neglect, improper service or other causes not
arising out of defects in material or workmanship.

If this product is not in good working order as warranted above, your only
remedy shall be repair or replacement. In no event will Star Gate
Technologies, Inc., be liable to you for any damages, including lost profits,
lost savings or other incidental or consequential damages arising out of the
use or inability to use such a product, even if Star Gate Technologies, Inc.,
has been advised of the possibility of such damages, or any claim by any
other party.

Note: Some states do not allow exclusion or limitation of incidental or
consequential damages or limitations on how long an implied warranty lasts,
so the above limitations or exclusions may not apply.

THE FOREGOING LIMITED WARRANTY SHALL BE IN LIEU OF ANY OTHER WARRANTY,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  REPLACEMENT OF
NONCONFORMING GOODS, FOR THE REASONS AND PERIOD DESCRIBED ABOVE, SHALL
CONSTITUTE FULFILLMENT OF ALL LIABILITY OF SELLER TO BUYERS, WHETHER BASED
ON CONTRACT, NEGLIGENCE OR OTHERWISE WITH RESPECT TO OR ARISING OUT OF SUCH
GOODS.

Note: Some states do not allow the exclusion of implied warranties, so the
above exclusion may not apply to you. This warranty gives you specific legal
rights; you may also have other rights which vary from state to state.