AMATI COMMUNICATIONS CORP
10-K/A, 1996-10-29
COMPUTER COMMUNICATIONS EQUIPMENT
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
 
                             WASHINGTON, D.C. 20549
                            ------------------------
 
   
                                  FORM 10-K/A
    
 
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<CAPTION>
/X/        ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
           EXCHANGE ACT OF 1934
           For the fiscal year ended JULY 27, 1996
<S>        <C>
                                                     OR
/ /        TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
           EXCHANGE ACT OF 1934
           For the transition period from to
           Commission file number 0-4187
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                        AMATI COMMUNICATIONS CORPORATION
 
                          (Formerly ICOT Corporation)
 
             (Exact name of registrant as specified in its charter)
 
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<S>                                             <C>
                   DELAWARE                                       94-1675494
       (State or other jurisdiction of                         (I.R.S. Employer
        incorporation or organization)                       Identification No.)
 
      2043 SAMARITAN DRIVE, SAN JOSE, CA                            95124
   (Address of principal executive offices)                       (Zip Code)
 
           Registrant's telephone number, including area code:                (408)
                                           879-2000
 
Securities registered pursuant to Section 12(b) of the Act:
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                                                NAME OF EACH EXCHANGE
 TITLE OF EACH CLASS                             ON WHICH REGISTERED
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                                 NONE
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Securities registered pursuant to Section 12(g) of the Act:
 
                                 TITLE OF CLASS
                          COMMON STOCK, $.20 Par Value
 
    Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for at least the past 90 days.
                             Yes _X_         No ____
 
    Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statement
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K / /
 
    The approximate aggregate market value of the registrant's common stock held
by non-affiliates on October 18, 1996 (based upon the closing sales price of
such stock as reported in the National Market by Nasdaq as of such date) was
$403,085,274.
 
    As of October 18 1996, 17,718,034 shares of Registrant's Common Stock were
outstanding.
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
    Certain sections of the Proxy Statement to be filed in connection with the
1996 Annual Meeting of Stockholders are incorporated by reference into Part III.
 
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                        AMATI COMMUNICATIONS CORPORATION
                                 1996 FORM 10-K
                               TABLE OF CONTENTS
 
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<S>        <C>                                                                             <C>
                                               PART I
Item 1.    Business......................................................................          1
 
Item 2.    Properties....................................................................          8
 
Item 3.    Legal Proceedings.............................................................          9
 
Item 4.    Submission of Matters to a Vote of Security Holders...........................          9
 
                                              PART II
 
Item 5.    Market for Registrant's Common Equity and Related Stockholder Matters.........         10
 
Item 6.    Selected Financial Data.......................................................         10
 
Item 7.    Management's Discussion and Analysis of Financial Condition and Results of
             Operations..................................................................         11
 
Item 8.    Financial Statements and Supplementary Data...................................         19
 
Item 9.    Changes in and Disagreements with Accountants on Accounting and Financial
             Disclosure..................................................................         33
 
                                              PART III
 
Item 10.   Directors and Executive Officers of the Registrant............................         34
 
Item 11.   Executive Compensation........................................................         35
 
Item 12.   Security Ownership of Certain Beneficial Owners and Management................         36
 
Item 13.   Certain Relationships and Related Transactions................................         36
 
                                              PART IV
 
Item 14.   Exhibits, Financial Statement Schedules and Reports on Form 8-K...............         37
 
SIGNATURES...............................................................................         40
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                                     PART I
 
ITEM 1.  BUSINESS
 
    Incorporated under the laws of the state of Delaware in 1968 as Microform
Data Systems, Inc., the Company changed its name to ICOT Corporation in 1980. On
November 28, 1995, ICOT Corporation, based in San Jose, California and Amati
Communications Corporation ("Old Amati"), a privately held Mountain View,
California based company completed a merger by which Old Amati became a wholly-
owned subsidiary of the Company. Effective as of the merger, the Company's name
was changed to Amati Communications Corporation, and its common stock began
trading on the Nasdaq National Market under the symbol "AMTX". To accommodate
its recent growth and to consolidate facilities of the merged entities, the
Company moved to a new office in September 1996. The Company's principal offices
are now located at 2043 Samaritan Drive, San Jose, California, 95124 and its
telephone number is (408) 879-2000, fax number is (408) 879-2900 and World Wide
Web site is at : http//www.amati.com.
 
    The Company is a leading developer of advanced transmission equipment
utilizing Discrete Multi-tone ("DMT") technology for Asymmetrical Digital
Subscriber Line ("ADSL") and Very high-speed Digital Subscriber Line ("VDSL")
markets. The Company holds DMT and ADSL patents and has entered into agreements
covering its technology, or is in discussions regarding such agreements, with
companies like Motorola, NEC and Nortel.
 
    The Company is also a provider of network connectivity systems for the
internetworking and Original Equipment Manufacturers ("OEM") markets. These
products are used primarily in two applications:
 
    - International Business Machines Corporation ("IBM") compatible personal
      computers ("PCs") to IBM mainframe connectivity applications in Local Area
      Networks ("LANs").
 
    - Bridge products for interconnecting Token-Ring LANs, Token-Ring and
      Ethernet LANs, and Token-Ring LANs over Wide Area Networks ("WANs").
 
PRODUCTS AND MARKETS
 
    The Company is currently developing products to provide high speed digital
video, voice and data transmission over copper coaxial cable media utilizing DMT
modulation technology. See "Technology" referenced below. Beginning in 1987,
Professor John M. Cioffi, who undertook initial research on DMT technology, and
his graduate students developed the concept of utilizing DMT technology to
transmit large amounts of digital code and multimedia signals over ordinary
telephone lines. This research resulted in three patents, owned by Stanford
University, to which the Company holds an exclusive worldwide royalty-bearing
license.
 
    The Company has developed the DMT technology primarily for ADSL
applications. In 1992, a prototype system was developed with funding from
Northern Telecom to participate in the competition for the American National
Standards Institute ("ANSI") standard for the ADSL transmission specification.
In 1993, Amati's DMT technology was selected by ANSI and, as a result, is
recognized as the United States standard for ADSL transmission. In cooperation
with ANSI, the European Telecommunications Standards Institute ("ETSI") has
provided an information annex that makes the appropriate data rate changes for
European ADSL service. The Company believes the award of the ANSI and ETSI
standards will increase the market potential for the Company's products. Because
Amati's DMT technology was selected as the standard for ADSL, it is required to
license such technology on a fair and reasonable basis to third parties who
request it.
 
    ADSL (ASYMMETRICAL DIGITAL SUBSCRIBER LINE)
 
    In the late 1980's, Bellcore, the research entity jointly created and funded
by the seven Regional Bell Operating Companies for the development of new
technologies, developed the parameters for ADSL as a
 
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high-quality, low-cost method for transmitting digital video from the central
office of the local telephone company to a subscriber's home over ordinary
copper twisted-pair wire. The term "asymmetric" refers to the fact that there is
a different data rate in each direction (bi-directional) of the transmission.
The ANSI standard for ADSL sets the data rate at approximately 6 Mbps to the
subscriber's home and approximately 600 Kbps from the subscriber's home to the
central office over 24 and 26 gauge copper twisted-pair wire for a distance of
at least two miles. The practical implementation of ADSL products will allow the
simultaneous transmission of video, data and voice over the same copper wire
that is currently installed in most homes in the United States and other
developed countries.
 
   
    ADSL is principally intended for video dialtone services. The potential
demand for ADSL is being driven primarily by the threat to the telephone
companies of increased competition as a result of deregulation, and their desire
to provide video services utilizing their existing copper wire plant without
having to invest heavily in more expensive access technologies, such as
fiber-optic systems. Telephone companies are currently performing technical and
market trials of various video and multimedia systems. ADSL has the potential of
providing telephone companies with a technology that will enable them to compete
cost-effectively with their main competitors for video services, the
interexchange carriers and cable companies.
    
 
    There are several access transmission technologies that can deliver digital
services to a subscriber's home. The most effective technology, laying
fiber-optic cable to each home, is not practical as a near-term solution from
both cost and time-to-implement perspectives. Therefore, the telephone companies
are reviewing interim strategies such as ADSL, Hybrid Fiber Coax ("HFC"),
fiber-to-the-curb and certain wireless solutions. The Company believes ADSL is
the most effective technology where homes are widely dispersed or where the
"take rates" of the services are low (which is expected as new video services
are introduced). ADSL provides the additional advantages of utilizing the
existing copper plant, which avoids trenching streets and subscriber's
properties to lay new coaxial or fiber-optic cables. In addition, ADSL can be
deployed easily on a home-by-home basis. However, ADSL has the disadvantage
relative to fiber-to-the-curb and HFC of offering fewer simultaneous channels,
although telephone office switches may be able to offer a large menu of
offerings with ADSL.
 
    In order to implement an ADSL video service, there are a number of key
components in addition to the transmission equipment that must co-exist in a
cost effective manner, including the video content, a digital switch, a video
server, encode/decode equipment and a set-top box in the subscriber's home. The
Company's ability to effectively market ADSL products will depend, among other
factors, on the development and successful marketing of these components and
systems by other suppliers.
 
    The Company's first ADSL product was called Prelude. Prelude was completed
in 1992 and utilized in the various competitions for the ANSI standard, which
was awarded to the Company's DMT technology. This prototype was developed by
engineers with funding by Northern Telecom to prove that a 6 Mbps data rate was
possible over copper wire and to participate in the ANSI standards competition.
Prelude was produced using discrete (off-the-shelf) components. Prelude has been
utilized by telephone companies in 15 countries throughout the world to evaluate
the potential of ADSL, primarily in laboratory trials.
 
    Since November 1995, the Company began shipping the Overture series of
transceivers. The Overture 4 is a prototype that does not have a low enough cost
or power consumption for mass deployment and its components are entirely
discrete (off-the-shelf). It can operate at data rates of 1.5, 2, 3, or 4 Mbps
in the downstream (central office to the home) direction and up to 64 Kbps in
the upstream direction, and thus does not meet the ANSI standard of 6 Mbps for
downstream transmission. The Overture 4 is currently participating in field
trials, but is to be phased out in favor of the next series called Overture 8.
 
    In March 1996, the Company delivered the Overture 8, a transceiver
characterized by a high bandwidth as defined by the ANSI standards. Currently
installed in its first trial of broadcast video in Australia, the Overture 8 is
the first product utilizing custom semiconductors designed by the Company's own
microelectronics group. Overture 8 has two components developed utilizing
standard Application
 
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Specific Integrated Circuit ("ASIC") design systems. The Company believes
Overture 8 will be important to the market because it has the capability to
support the requirements delineated in the ANSI standard, including four
downstream channels and three upstream channels. The downstream data rates using
Overture 8 can be as high as 8 Mbps in various multiples, such as four 2 Mbps
channels, and can be channelized in order to support such services as Integrated
Services Digital Network ("ISDN") or video conferencing. The cost and power
consumption of the initial version of Overture 8 may preclude it from being
acceptable for mass development, although the Company believes it is currently
the most advanced ADSL product on the market.
 
    In June 1996, a new version of the Overture 8 ADSL/DMT Modem specifically
designed to meet system needs for Internet access was announced. Key to the new
design is the core ADSL/DMT technology that enables Internet access at data
rates as high as 8 Mbps downstream and 640 Kbps upstream, 60 times faster than
basic rate ISDN and up to 250 times faster than existing dial-up modems. The new
Overture 8 ADSL/DMT Modem for Internet Access adds direct Ethernet connectivity,
using 10BaseT, to both subscriber and central office units. This is the first 8
Mbps ADSL modem with Ethernet available commercially. Moreover, as with all
standard ADSL/DMT modems, the new Overture 8 provides the high-speed data
transmission over standard phone lines while still permitting voice traffic on
the same connection.
 
    VDSL (VERY HIGH-SPEED DIGITAL SUBSCRIBER LINE)
 
    Telephone companies have been placing fiber-optic cables into communities
and are expected to continue to do so at an increasing rate. It is currently not
economically feasible to take the fiber directly to homes and telephone
companies are not expected to do so in the foreseeable future. Access
technologies such as fiber-to-the-curb and fiber-in-the-loop are strategies that
allow telephone companies to run the fiber to some platform or node in the
community and link homes requiring high bandwidth services directly over copper
wire or coaxial cable. The concept of transmitting at such high data rates over
thousands of feet of copper wire is just now becoming a reality. VDSL is used in
conjunction with a fiber-optic backbone to cover the "last mile" as efficiently
as possible. The VDSL market thus requires DMT products that have higher data
rates (25 Mbps to 52 Mbps) over shorter distances (typically 500 to 3,000 feet)
than ADSL products.
 
    The Company believes that DMT technology is superior to other available
modulation technologies for this application and is designing VDSL products
using its microelectronics capability. As with ADSL, VDSL products will be
asymmetrical and are intended to carry video, voice and data simultaneously. The
Company's next VDSL product, called the Piccolo, is expected to operate
asymmetrically at speeds of up to 25 Mbps. These products are expected to be
introduced in 1997 and to compete for the ANSI standard for VDSL transmission,
which has not yet been awarded.
 
    The Company's digital VDSL chip is being designed for utilization in cable
as well as copper transmissions. Management has been very involved in cable
standards activities in an attempt to obtain the endorsement for DMT through the
Institute of Electrical and Electronic Engineers ("IEEE") 802.14 committee,
which has authority over the upstream cable standards. DMT has the unique
capability of optimizing the upstream data rate relative to other technologies
available, although there can be no assurance the Company will win this
endorsement. As the cable market migrates from analog systems to digital with
interactive requirements, a large opportunity for DMT-based systems will exist.
As is true for ADSL products, in order to implement a video service over VDSL
products, other key components, not supplied by the Company, including video
content, a digital switch, a video server, encode/decode equipment and a set-top
box in the subscriber's home, will be required to co-exist in a cost effective
manner.
 
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    HDSL (HIGH BIT RATE DIGITAL SUBSCRIBER LINE)
 
    In contrast to ADSL, HDSL transmission is symmetrical, that is, the data
rate is the same in both directions. The Company's DMT technology is equally
efficient in a symmetrical or an asymmetrical architecture. The Company believes
that the HDSL market holds a longer range potential opportunity for its DMT
technology than does the ADSL market, and the Company may design products for
this market in the future.
 
    TECHNOLOGY
 
    The Company's core technology is DMT, a multicarrier modulation technology.
The concept of multicarrier transmission is over 30 years old; however, research
on the Company's DMT technology has been accomplished during the past 8 years.
The Company has exclusive, worldwide royalty-bearing license rights to the DMT
patents owned by Stanford University; since the Company's inception, it has
filed a number of patent applications to protect its intellectual property. The
Company considers itself to be the leader in the development of DMT technology.
 
    The purpose of modulation technology is to transmit a signal over a given
medium as efficiently as possible. This requires minimizing errors in
transmission by avoiding the noise accompanying the chosen medium. In the case
of DMT, the available bandwidth is divided into carriers that reside at
different frequencies. The carriers are measured for their ability to send data
with the bits of information assigned to the carriers based upon their capacity.
Carriers with higher capacity are assigned more bits, while carriers unable to
carry data are turned off. In the case of an ADSL system, the available
bandwidth is 1.1 megahertz (MHz), consisting of 256 carriers of 4 kilohertz
(kHz) bandwidth each.
 
    A DMT system has a transceiver at each end of the line. In the case of ADSL,
there is one transceiver in the telephone company's central office called the
ATU-C (ADSL Transmission Unit-Central office) and one in the subscriber's home
called the ATU-R (ADSL Transmission Unit-Remote). When DMT initializes the ATU-C
by transmitting 256 4 kHz carriers downstream to the ATU-R, the ATU-R measures
the quality of each of the carriers and then decides whether a carrier has
sufficient quality to be used for further transmission and, if so, how much data
this carrier should carry relative to the other carriers that are to be used.
This information is then passed back to the ATU-C via a control channel where
the bits are assigned to the carriers. The system is very adaptive as it will
change the bit assignments should the line characteristics change during
transmission. This procedure maximizes performance by minimizing the probability
of bit error in transmission. Bit errors are typically caused by interference
such as AM radio stations, open-circuited branched telephone lines called bridge
taps and crosstalk from other wires. The system simply assigns fewer or no bits
to carriers at frequencies where the interference occurs.
 
    The initial development of DMT was directed toward transmitting digital
video signals over ordinary copper twisted-pair wires. DMT is also effective
over other media, including coaxial cable and wireless transmission. The Company
believes that in order to design and manufacture commercially acceptable
products, cost and performance improvements beyond what is available with
current technology will be necessary. Accordingly, it has assembled a
microelectronics team that is designing custom integrated semiconductor circuits
utilizing standard ASIC design systems and certain technologies beyond ASIC.
 
    IBM PRODUCTS
 
    During the past several years, the Company has undertaken several projects
in which it has designed, developed and manufactured custom communications
products for IBM. Pursuant to its principal agreement with IBM, the Company
furnishes engineering, manufacturing, and assembly services for the manufacture
of LAN bridge products in accordance with IBM specifications and upon receipt of
purchase orders for the products. The LAN bridge products were upgraded during
fiscal 1994 and shipping of the new family of LAN bridge products commenced in
January 1994. The new family of products, while priced lower, has more features
and options, and offers significantly higher performance than the earlier bridge
 
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products. The principal agreement with IBM, amended in December 1993, has been
extended. Under the terms of a second agreement, the Company provides
development and support services to IBM for a custom product. IBM launched this
product in the United States and Canada in July 1994. The product is currently
being launched in a number of European and Asian countries. In fiscal years 1995
and 1996, the Company received royalty payments from IBM on sales of this
product to end-customers.
 
    Fiscal 1996 sales to IBM accounted for approximately 69% of the Company's
revenues. Since IBM considers product sales and market data confidential, the
Company has very little ability to anticipate future demands. The Company is
highly dependent on sales to IBM and expects that quarterly and annual results
could be volatile due to its dependence on this dominant customer. IBM may
terminate its agreements with the Company upon 30 days' notice without a
significant penalty. Upon termination of the agreements, the Company has
continuing obligations to provide certain products and technical support for a
period of years, at a price then to be negotiated.
 
    CONNECTIVITY PRODUCTS
 
    The Company's PC to Mainframe Connectivity products consist of 3270
emulation products which are Disk Operating System ("DOS") and Microsoft Windows
based software and microcomputer boards (with extensive firmware) that reside in
an IBM or IBM compatible PC, and enable the PC to communicate, access and
transfer data through Systems Networks Architecture ("SNA") to IBM or IBM
compatible mainframes. The Company sells single user and LAN gateway versions of
all its products. LAN gateways allow multiple PC users, attached directly to
Token-Ring, Ethernet and other LANs, to access SNA networks through one shared
link. The Company markets its PC to Mainframe Connectivity products to selected
niche markets: OEMs, Application Program Interface ("API") and strategic
end-user market segments of the Windows and DOS Connectivity markets. The
Company's connectivity market share and revenues have been declining in recent
years and are expected to continue to decline.
 
SALES, MARKETING, SERVICE
 
    With its DMT products, the Company's strategy is to sell to telephone
companies worldwide through large telecommunication suppliers who will integrate
the Company's products into larger systems for their customers. This type of OEM
selling does not require a large sales force. In the PC to Mainframe
Connectivity market, the Company sells to end-users, independent software
vendors, OEM's and through a small network of resellers. In the network
connectivity business, the Company offers a 90-day warranty and post-warranty
support programs. Hardware products are typically serviced on a factory repair
basis. Software support is usually handled by phone consultation or, less often,
by an on-site visit by a systems engineer. The Company employs two persons in
sales, two in customer support, and one in marketing.
 
    Export sales of connectivity products in fiscal 1994, 1995, and 1996
represent 1-2% of total net sales, for each such year, primarily to Western
Europe and Canada. Following the merger in November 1995, shipments of the
Overture series of transceivers for use in field trials, primarily to the
countries of Australia, Israel, Germany and Italy accounted for 15% of total net
revenues. These sales are subject to certain controls and restrictions, but the
Company has not experienced any material difficulties related to these sales.
 
BACKLOG
 
    As of the end of fiscal 1995 and 1996, the Company's backlog was
approximately $3,358,000 and $2,961,000, respectively. The Company anticipates
that all of its current backlog will be filled within the 1997 fiscal year.
 
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MANUFACTURING
 
    Most of the Company's products are assembled at its San Jose, California
facility, where testing, quality assurance and material control activities are
performed. The Company has the capacity to increase its output without further
expansion of its physical plant and warehousing facilities. The Overture series
of transceivers is currently in production, and assembly and testing of this
product is being outsourced. Product quality and reliability is maintained at
vendors' sites through auditing at subcontractors' facilities and inspection of
incoming components.
 
    Electronic and mechanical components, subassemblies and supplies are
purchased from many independent suppliers. Although the Company purchases most
of a given component, subassembly or supply from a single vendor, management
believes that, with a few exceptions, at least one alternative source of supply
is available at comparable cost for each component in its product lines. A few
components are consigned from IBM and there is no alternative source of supply
for these components.
 
RESEARCH AND DEVELOPMENT
 
    The Company believes that it has a technological leadership position in DMT
modulation technology. Future success, however, is largely dependent on its
ability to maintain this position through the development of new products that
meet a wide range of customer needs. Accordingly, the Company intends to
continue to make substantial investments in research and development. There can
be no assurance that future development efforts will result in commercially
successful products, or that these products will not be rendered obsolete by
changing technology, new industry standards or new product announcements by
others.
 
    The Company has 47 full-time employees engaged in research and development
activities as of July 27, 1996. Its research and development efforts are
expended on the enhancement of existing products and for the development of new
products in order to meet rapidly changing customer requirements. These efforts
are organized into three main groups: microelectronics, software development and
hardware development. Currently, the microelectronics group is focused primarily
on efforts for the ADSL and VDSL markets; the software group is focused
primarily on development of firmware for products such as Overture 8; and the
hardware group is focused primarily on analog and digital design activities.
 
    Significant activities include the following:
 
    - Adaptation/portation/new code generation for new operating systems at the
      PC and network operating system level.
 
    - Development of OEM products to customer specifications.
 
    - Improved reliability of existing products through extensive in-house
      testing of products. The Company has a full in-house test facility
      including a mainframe with extensive testing software, multiple LANs with
      multiple PCs, local attach, token ring attach, and remote dial-in
      capability, a mainframe emulator, protocol analyzers, IBM controllers,
      terminals and printers and many other test tools which it uses to simulate
      customers' complex multivendor, multiproduct environments.
 
    Net research and development expenses totaled $1,429,000 (17% of net sales)
in fiscal 1994, $1,595,000 (13% of net sales) in fiscal 1995 and $3,837,000 (32%
of net sales) in fiscal 1996. Higher research and development costs in fiscal
1996 resulted from the introduction of the Company's new family of Overture 8
ADSL/DMT modems and Overture 8 Access System shelf products. All related
research and development expenses are charged to operations as incurred.
Engineering expenses are net of software development costs capitalized in
accordance with Statement of Financial Accounting Standards ("SFAS") No. 86 and
of IBM-funded development costs. In fiscal 1994, capitalized software
development costs totaled $455,000. There was no capitalization of software
development costs in 1995 and 1996. The amount of funded development costs
totaled $549,000, $637,000, and $589,000 respectively, for fiscal 1994, 1995
 
                                       6
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and 1996. The amortization of capitalized software development costs charged to
cost of sales in fiscal 1995 and 1996 were $310,000 and $246,000 respectively.
In fiscal 1994, there was no amortization of capitalized software development
costs because there were no capitalized software projects available for general
release.
 
COMPETITION
 
    Telephone company trials have demonstrated the feasibility of the ADSL
products. Two basic ADSL technologies have participated in these trials: the
Company's DMT multicarrier technology and the single Carrier-less
Amplitude/Phase modulation ("CAP") technology developed by AT&T. DMT and CAP
have been rival technologies since the ANSI standards competition in 1993, which
was won by the Company's DMT technology. The Company believes that its DMT
technology is less complex and more cost effective than a single carrier
technology, such as CAP. The CAP technology has competed at all trials using
transceivers developed from AT&T's proprietary chipset by Westell, Inc. located
in Illinois. The trials to date have been run at data rates of 1.5 Mbps and 2
Mbps, the speeds of AT&T's CAP products. The Company believes that as products
capable of data rates of 6 Mbps and 8 Mbps become available later this year,
trials will be conducted at those speeds. As the performance differences between
DMT and CAP become greater at higher data rates, the Company believes that most
of the competition at the higher speeds will come from new competitors using DMT
technology.
 
    The Company has provided a license to Motorola Corporation to develop a
standard compliant single chip solution for the ADSL market. Subject to payment
of royalty on net sales, Motorola has the non-exclusive right to sell this chip.
The Company also has the right to buy the Motorola chip at the most favored
customer price. The Company expects Motorola's customers to become competitors
with system level DMT products. Other entities with development efforts underway
with DMT technology for the ADSL marketplace include: ORCKIT, Pairgain,
Aware/Analog, ECI, Ericsson and Alcatel.
 
    To date, there have not been any ADSL products introduced in the marketplace
that have a cost structure satisfactory for a mass development to customers. In
order to design and manufacture commercially viable product in this market, a
substantial investment in custom integrated semiconductors must be made. The
Company believes that after 1997 competition will be primarily be on the basis
of price. Those suppliers not making such investments will not be able to
compete effectively.
 
    The PC to Mainframe Connectivity market is highly competitive and is
characterized by rapid advances in technology which result in the frequent
introduction of new products with improved performance characteristics, thereby
subjecting the Company's products to the risk of technological obsolescence. The
Company's ability to compete is dependent on several factors, including:
reliability, product performance, quality, features, distribution channels, name
awareness, customer support, product development capabilities and the ability to
meet delivery schedules. The Company competes, directly or indirectly, with a
broad range of companies, many of whom have significantly greater financial and
other resources. In addition, the Company is competing for a limited and
declining segment of the PC-Connectivity market, which market is itself
declining.
 
    Many companies compete in the PC to Mainframe Connectivity market, including
IBM, Attachmate Corporation, Eicon Group, Inc., Network Software Associates,
Wall Data Incorporated, and Novell Inc. Products and policies of these companies
can adversely affect the Company's competitive position. A large number of the
Company's products interact with IBM equipment and support IBM protocols. Thus,
the development of new products, equipment or communications systems by IBM
could adversely affect its PC to Mainframe Connectivity competitiveness.
 
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PATENTS, TRADEMARKS AND LICENSES
 
    The Company has a policy of seeking patents when appropriate on inventions
concerning new products and improvements as part of its on-going research and
development activities. Its patents are classified as follows:
 
    - Group I--Consists of 3 patent applications and 1 patent (shared with
      Northern Telecom), consisting of technology necessary to conform to the
      ANSI standard for ADSL. The Company has informally agreed with the ANSI
      standards body to license these patents to third parties on fair and
      equitable terms.
 
    - Group II--Consists of 2 patents issued to Stanford University in 1993 and
      1994 and 1 patent application filed by Stanford University, all of which
      have been exclusively licensed to the Company, and 1 patent application
      filed by the Company in 1995. The technology described in these patents is
      not necessary to conform to the ANSI standard for ADSL; however, such
      technology makes ADSL transceivers more efficient.
 
    - Group III--Consists of 1 patent owned by the Company and 5 patent
      applications filed by the Company, all of which relate more generally to
      the Company's DMT technology.
 
    The Company principally relies on its technological and engineering
resources to develop its business in an industry where technology changes very
fast. It does, however, consider the use of trademarks, copyrights, license
agreements and non-disclosure agreements as a means to protect its proprietary
technology and, therefore, it intends to seek and maintain protection where
appropriate.
 
    The Company also holds one United States patent expiring in the year 2000
and one Canadian patent expiring in the year 2001. Both of these patents cover
an apparatus for interconnecting data communications and data terminal equipment
which is no longer an integral part of the Company's product architecture. The
Company also has several registered trademark, including
"ICOT-Registered Trademark-" and "OmniPATH-Registered Trademark-" and has
copyrights in its software and related documentation, including product manuals.
 
    The Company is a licensee under three OEM software source code licenses that
are used in connection with the development, maintenance, enhancement, and
support of various PC to Mainframe connectivity products. These licenses pertain
to peripheral products which the Company remarkets to complement or add features
to its core product line.
 
EMPLOYEES
 
    As of July 27, 1996, the Company had 88 full-time employees, of whom 21 were
engaged in manufacturing, 47 in research and development, 5 in marketing and
sales and 15 in general and administrative positions.
 
    Ten members of the Company's engineering staff hold doctoral degrees. The
Company also employs a number of consultants who are primarily used in
engineering. Competition for technical personnel in this technology is intense.
In May 1995, the Company entered into an employment agreement with Dr. Cioffi,
its founder, Vice President, Engineering and Chief Technical Officer. The
agreement provides for Dr. Cioffi to be employed by the Company until October
1998, while continuing his obligations as a full-time tenured faculty member at
Stanford University. Stanford University limits the amount of time its faculty
can spend on outside activities.
 
    All employees of the Company are based in the United States. None of its
employees is subject to a collective bargaining agreement, and there have been
no work stoppages due to labor difficulties. The Company believes that its
employee relations are good.
 
                                       8
<PAGE>
ITEM 2.  PROPERTIES
 
    The Company's corporate headquarters and manufacturing facility is located
in San Jose, California. After the merger, the Company moved its corporate,
engineering and manufacturing operations to an approximately 48,700 square foot
facility to consolidate its operations and accommodate its recent growth. The
lease for this facility commenced on July 15, 1996 and expires on July 31, 2001.
Prior to the move, the Company leased a single story premise of 23,300 square
feet in North San Jose occupied by the ICOT group and a 9,500 square foot
facility in Mountain View occupied by the Old Amati group.
 
    The Company's lease for its facility in North San Jose expires on July 23,
1999, and has been subleased for the remaining term of the lease. Related rent
and operating cost obligations are covered in full by sublease income. The lease
for Mountain View facility which would have expired April 1, 1997, has been
canceled as of August 30, 1996. The Company has no remaining obligations under
this lease.
 
    The Company's wholly owned subsidiary, ICOT International Limited, now
dormant, leases an approximately 6,400 square foot building located in
Wokingham, England. ICOT International Limited ceased its operations in the
United Kingdom in fiscal 1993 as part of the Company's restructuring of its
connectivity business. The lease on the Wokingham facility expires on September
29, 2010. The Company has subleased this facility through September 1997, but
income from this sublease is less than its rental obligations. The Company has
recorded a liability of $294,000, net of anticipated future sublease income, to
cover partial rental obligations related to this facility.
 
    The Company believes that its current facilities are adequate to conduct
operations, and that its facilities are adequate for the future growth of the
Company.
 
ITEM 3.  LEGAL PROCEEDINGS
 
    In November 1993, an action was brought against the Company for damages
related to the use of one of the Company's products. The plaintiff filed a suit
claiming repetitive stress injuries resulting from the use of the Company's
products in the course of employment with American Airlines during the period
from May 1981 through July 1991. The plaintiff alleges damages in the amount of
$1 million and has requested punitive damages of $10 million. The Company
believes that the claim is without merit and has tendered defense of this action
to its insurance carriers. In the opinion of management, the outcome of this
litigation will not have a material adverse effect on the Company's financial
position or its results of operations. The Company is not involved in any other
material litigation.
 
ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
    There were no matters submitted to a vote of the Company's security holders
during the fourth quarter of the fiscal year covered by this report.
 
                                       9
<PAGE>
                                    PART II
 
ITEM 5.  MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS
 
    The Company has one class of stock outstanding, its common stock, which has
a par value of $.20 per share.
 
    The Company's common stock is traded on the Nasdaq National Market under the
symbol "AMTX". The following table sets forth the range of high and low sales
prices for the periods indicated, as reported by the Nasdaq National Market.
These prices do not include retail markups, markdowns, or commissions.
<TABLE>
<CAPTION>
FISCAL 1995                                                                                LOW       HIGH
- --------------------------------------------------------------------------------------  ---------  ---------
<S>                                                                                     <C>        <C>
First Quarter.........................................................................  $    0.88  $    1.25
Second Quarter........................................................................       0.63       1.06
Third Quarter.........................................................................       0.69       1.56
Fourth Quarter........................................................................       1.13       3.38
 
<CAPTION>
 
FISCAL 1996                                                                                LOW       HIGH
- --------------------------------------------------------------------------------------  ---------  ---------
<S>                                                                                     <C>        <C>
First Quarter.........................................................................  $    2.50  $    6.56
Second Quarter........................................................................       3.19       9.50
Third Quarter.........................................................................       5.25      19.75
Fourth Quarter........................................................................       9.38      36.50
</TABLE>
 
    On July 27, 1996, the Company had approximately 1,623 stockholders of
record. The Company has not paid cash dividends on its common stocks and its
present intention is not to do so.
 
ITEM 6.  SELECTED FINANCIAL DATA
 
    The following selected historical financial data has been derived from the
Company's audited consolidated financial statements. The historical financial
data should be read in conjunction with the Company's consolidated financial
statements and notes thereto.
 
<TABLE>
<CAPTION>
                                                                                 YEARS ENDED
                                                            ------------------------------------------------------
                                                            JULY 25,   JULY 31,   JULY 30,   JULY 29,    JULY 27,
                                                              1992       1993       1994       1995        1996
                                                            ---------  ---------  ---------  ---------  ----------
                                                                   (IN THOUSANDS, EXCEPT PER SHARE AMOUNT)
<S>                                                         <C>        <C>        <C>        <C>        <C>
SELECTED INCOME STATEMENT DATA:
  Net Sales...............................................  $  26,324  $  12,307  $   8,236  $  12,040  $   12,085
  Income (Loss) before Income Taxes.......................  $   3,398  $  (5,963) $     530  $   1,933  $  (34,035)
  Provision for Income Taxes..............................        265     --             27         97          43
                                                            ---------  ---------  ---------  ---------  ----------
  Net Income (Loss).......................................  $   3,133  $  (5,963) $     503  $   1,836  $  (34,078)
  Net Income (Loss) per Share.............................  $     .23  $    (.46) $     .04  $     .16  $    (2.21)
 
SELECTED BALANCE SHEET DATA:
  Current Assets..........................................  $  17,695  $  11,188  $   9,463  $   7,793  $    5,182
  Current Liabilities.....................................  $   4,042  $   2,598  $   2,171  $   1,591  $    4,267
  Working Capital.........................................  $  13,653  $   8,590  $   7,292  $   6,202  $      915
  Total Assets............................................  $  21,101  $  12,936  $  11,391  $  12,111  $    6,241
  Long-term Liabilities...................................  $   1,566  $   1,099  $     428  $     294  $      294
  Stockholders' Equity....................................  $  15,493  $   9,239  $   8,792  $  10,226  $    1,680
</TABLE>
 
                                       10
<PAGE>
ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS
 
    INTRODUCTION
 
    To the extent that the information presented in this Form 10-K discusses
financial projections, information or expectations about the Company's products
or markets, or otherwise makes statements about future events, such statements
are forward-looking and are subject to a number of risks and uncertainties that
could cause actual results to differ materially from the statements made. These
include, among others, successful and timely development and acceptance of new
products, the availability of sufficient funding to complete development of new
products and other factors described below. In addition, such risks and
uncertainties also include the matters identified under the heading "Risk
Factors" below.
 
    OVERVIEW
 
    On November 28, 1995, ICOT Corporation, based in San Jose, California, and
Amati Communications Corporation ("Old Amati"), a privately held Mountain View,
California based company, completed a merger by which Old Amati became a
wholly-owned subsidiary of ICOT Corporation. Effective as of the merger, the
name of the surviving company was changed to Amati Communications Corporation
(the "Company") and its common stock began trading on the Nasdaq National Market
under the symbol "AMTX" on November 29, 1995.
 
    Under the terms of the merger agreement with Old Amati, the shareholders,
warrant holders and option holders of Old Amati acquired 6,788,924 newly issued
shares of the Company's stock, representing approximately 35% of the fully
diluted shares of the Company. As of the merger date, Old Amati employed
twenty-four full time employees, including four in manufacturing, two in sales
and customer support, fifteen in engineering and three in finance and
administration. Old Amati was a development stage company that developed and
marketed advanced transmission systems utilizing Discrete Multi-tone ("DMT")
technology to provide high speed transmission over copper and cable media. Old
Amati's DMT technology has been selected as the ANSI and ETSI standard for
Asymmetric Digital Subscriber Line ("ADSL") products.
 
    The Company is a leading developer of advanced transmission equipment
utilizing Discrete Multi-tone (DMT) technology for the ADSL, Very high-speed
Digital Subscriber Line (VDSL) and cable modem markets. The Company is the
holder of ADSL/DMT patents and has licensed the technology to companies such as
Nortel, Motorola and NEC. The Company is also a provider of network connectivity
systems for the internetworking and OEM marketplaces
 
    HIGHLIGHTS OF THE FISCAL YEAR
 
    - Announced key strategic technology development partnerships with Motorola
      and NEC for the next generation xDSL technologies.
 
    - Delivered a new family of Overture 8 ADSL/DMT modems for field testing,
      further increasing the Company's leadership position in the technology.
      These new modems are the first to provide data transmission rates as high
      as 8 Mbps downstream and 500 kbps upstream.
 
    - Introduced an 8 Mbps ADSL modem which provides direct Ethernet
      connectivity.
 
    - Selected to participate in a significant number of new ADSL market trials
      including the GTE-Microsoft ADSL trial in Redmond, WA, the GTE Internet
      access trial in Dallas, TX, the Bezeq (Israel Telecom) Video on Demand
      ("VOD") trial in Israel, the Swiss Telecom PTT interactive video trial in
      Switzerland and the Telstra broadcast quality video trial in Australia.
 
                                       11
<PAGE>
RESULTS OF OPERATIONS
 
    FISCAL YEAR 1996 VS FISCAL YEAR 1995
 
    Total net sales in fiscal 1996 rose slightly to $12,085,000 from sales in
the previous fiscal year of $12,040,000. Sales to IBM accounted for 69% of the
Company's revenue in fiscal 1996 compared with 83% in fiscal 1995. Royalty
revenues during fiscal year 1996 of $875,000 continue to be derived from a
product developed by the Company for IBM in fiscal 1994. Although dependence on
one dominant customer has been reduced since the merger, the Company expects
that IBM will continue to account for a substantial portion of the Company's
revenues until the Company completes development and commercialization of its
ADSL products. IBM is not obligated to purchase any specified amounts of
products or to provide binding forecasts of product purchases for any period.
Since IBM considers product sales and market data confidential, the Company has
very little ability to forecast future demand. Furthermore, since IBM has the
exclusive responsibility for marketing and selling the products that the Company
develops, results of operations can be significantly affected by IBM's success
in the marketplace.
 
    Since November 1995, the Company began shipping its Overture series of
transceivers. The Overture 4 is a prototype that does not have a low enough cost
or power consumption for mass deployment and its components are entirely
discrete (off the shelf). This product is to be phased out in favor of the next
series of transceiver, called Overture 8. In the third quarter of fiscal 1996,
the Company delivered the Overture 8, which is characterized by a high bandwidth
as defined by the ANSI standards. This product is currently installed in its
first field trial of broadcast video in Australia. Sales in fiscal 1996 of
Overture 4 and Overture 8 series field trials were $999,000 and $819,000,
respectively. In addition, contract revenues of $148,000 from customization of
products were also realized in fiscal 1996. The Company anticipates that the
Overture series of products will continue to be represented at international
field trials in fiscal 1997.
 
    PC to Mainframe Connectivity sales of $1,822,000 in fiscal 1996 represents a
decline of 14% when compared with the same period of the prior fiscal year due
to a general decline in the Company's connectivity market share. The PC to
Mainframe Connectivity market is highly competitive and is characterized by
rapid advances in technology which frequently result in the introduction of new
products with improved performance characteristics, thereby subjecting the
Company's products to risk of technological obsolescence. The Company competes
directly or indirectly with a broad range of companies, many of whom have
significantly greater resources. In addition, the Company is competing for a
limited and declining segment of the market.
 
    Gross margins as a percent of sales were 39% in fiscal 1996 compared with
44% for the same period of fiscal 1995. The decline in margin was primarily
attributable to product mix resulting from shipment of new products to IBM and
costs to complete test trials of the Overture series of transceivers.
Amortization of capitalized software costs charged to cost of sales were
$246,000 in fiscal 1996 and $310,000 in fiscal 1995.
 
    Net research and development expenses increased 141% to $3,837,000 in fiscal
1996 when compared to the same period of fiscal 1995 largely because of the
addition as a result of the merger of fifteen Old Amati engineers and the hiring
of 20 new employees. Higher costs in fiscal 1996 are primarily due to the
introduction of the Company's new family of Overture 8 ADSL/DMT modems and
Overture 8 Access System shelf products. From the technology acquired in the
merger, the Company believes it has a technological leadership position in DMT
modulation. Maintaining this position is largely dependent on the Company's
ability to develop new products that meet a wide range of customer needs.
Research and development efforts for the DMT technology are grouped into three
areas: the microelectronics group which is primarily focused on ADSL and VDSL
markets; the software group, which is primarily focused on the development of
firmware for the Overture series; and the hardware group, which is primarily
focused on analog and digital design activities. All research and development
expenses related to this technology are charged to operations as incurred.
Expenses are net of funded development costs from IBM. Funded development costs
for fiscal 1996 were $589,000 compared to $637,000 in fiscal 1995. There was no
 
                                       12
<PAGE>
capitalization of software development costs in either fiscal year. The Company
considers research and development a key element in its ability to compete and
will continue to make investments in product development and support for IBM.
 
    Marketing and sales expenses rose to $953,000 in fiscal 1996 compared to
$861,000 in fiscal 1995 due to an increase in overseas travel in conjunction
with Overture series participation in field trials internationally. Sales,
marketing and customer support operations of the acquired business, which cover
both domestic and international markets, is handled by five individuals. The
Company's strategy is to sell to telephone companies worldwide through large
telecommunication suppliers who will integrate the Company's products into
larger systems for their customers. This type of OEM selling does not require a
large sales force.
 
    General and administrative expenses increased to $2,519,000 in fiscal 1996
as compared to $1,229,000 in fiscal 1995. This is primarily due to patent
expenses, additional corporate staffing, and occupancy costs associated with the
merger.
 
    Interest income decreased to $168,000 in fiscal 1996 compared to $301,000 in
the same period of fiscal 1995 due to maturities of held-to-maturity
investments.
 
    The provision for income taxes in fiscal 1996 was $43,000 compared to
$97,000 in fiscal 1995. Tax provisions were required for Federal alternative
minimum tax and California state taxes due to limitations on the use of
California's loss carryforwards. The Company had provided a valuation allowance
against the deferred tax asset attributable to the net operating losses due to
uncertainties regarding the realization of these assets.
 
    FISCAL YEAR 1995 VS. FISCAL YEAR 1994
 
    Total net sales in fiscal 1995 increased 46% to $12,040,000 compared to
sales of $8,236,000 in fiscal 1994. The increase is a result of shipments to the
Company's largest OEM customer, IBM, of products introduced into the market in
fiscal 1994. In addition, royalty revenues of $738,000 were recognized in fiscal
1995 from another new product developed by the Company and released by IBM in
July 1994.
 
    Revenues from IBM accounted for 83% of the Company's revenue in fiscal 1995,
compared with 65% in fiscal 1994, due to royalties and the introduction of new
products. Sales to IBM are uncertain due to its transition to new products.
Shipments to IBM are determined only by IBM and can result in revenue
fluctuations. IBM can cancel its agreement with the Company at any time without
penalty upon 30 days' notice. IBM continues to account for a substantial portion
of the Company's revenues and, consequently, the Company's business continues to
be volatile due to its dependence on a dominant customer. Because IBM has the
exclusive responsibility for marketing and selling of the products that the
Company develops for IBM, its profitability can be significantly affected by
IBM's success in the marketplace.
 
    PC to Mainframe Connectivity sales of $2,109,000 in fiscal 1995 represent a
decline of 26% from $2,857,000 for the prior fiscal due to decreased royalties
received from an OEM customer and to a general decline in the Company's
connectivity market share.
 
    Gross margins as a percent of sales were 44% for fiscal 1995 compared with
46% for the same period of fiscal 1994. The decrease in margins was primarily
attributable to product mix resulting from shipment of new products with lower
margins in the current fiscal year. Amortization of capitalized software costs
charged to cost of sales were $310,000 in fiscal 1995. There was no amortization
expense in the comparable period of the prior fiscal year.
 
    Net research and development expenses increased to $1,595,000 (13% of sales)
in fiscal 1995 compared to $1,429,000 (17% of sales) in fiscal 1994. Research
and development expenses are net of software development costs capitalized in
accordance with SFAS No. 86 and of funded development costs. During fiscal 1995
there was no capitalization of software development costs, resulting in higher
expenses
 
                                       13
<PAGE>
for the year. Software development costs capitalized in the prior fiscal year
were $455,000. Funded development costs for fiscal 1995 were $637,000 compared
with $549,000 in the comparable period of fiscal 1994. The Company believes that
research and development is a key element in its ability to compete and will
continue to make investments in product development and support.
 
    Marketing and sales expenses decreased to $861,000 (7% of sales) in fiscal
1995 compared to $884,000 (11% of sales) in fiscal 1994, due to a reduction in
sales staff and related office expenses.
 
    General and administrative expenses increased to $1,229,000 (10% of sales)
in fiscal 1995 as compared to $1,177,000 (14% of sales) in fiscal 1994, with the
addition of corporate planning and development personnel.
 
    Interest income increased to $301,000 in fiscal 1995 compared to $233,000 in
the same period of fiscal 1994. This increase is primarily due to higher
interest yields on short-term investments and likewise includes interest of
$50,000 on secured promissory notes receivable from Old Amati.
 
    The provision for income taxes in fiscal 1995 was $97,000 compared to
$27,000 in fiscal 1994. This provision was a result of net operating profit
after benefit of Federal net operating loss carryforwards. Fiscal 1995 and 1994
tax provisions were required for Federal alternative minimum tax and California
state taxes due to limitations on the use of California's loss carryforwards.
 
LIQUIDITY AND CAPITAL RESOURCES
 
    The Company had cash and short term investments of $886,000 as of July 27,
1996, compared to $3,491,000 as of July 29, 1995. Cash used for operating
activities of $1,147,000 resulted primarily from the Company's net loss after
adjusting for the write off of acquired in-process research and development.
Cash used for investing activities of $598,000 was primarily for advances to Old
Amati and acquisition costs of $2,266,000, as offset by the proceeds from sale
of held-to-maturity investments of $2,425,000. Cash provided by financing
activities of $1,565,000 was derived primarily from the proceeds of stock
options exercised.
 
    During fiscal 1996, the Company secured a bank line of credit for $1,250,000
and a capital lease line of $1,500,000. In October 1996, the Company entered
into an Investment Agreement with certain investors (the "Investors") which
provides to the Company up to $15 million in equity financing. In a related
transaction, the Company borrowed $3,000,000 from the Investors, which is
secured by all of the Company's intellectual property. The Company intends to
repay this loan upon completion of the financing. The Company's ability to meet
its future capital requirements will depend on many factors, including sales
levels, progress in research and development programs, the establishment of
collaborative agreements, and costs of manufacturing facilities and
commercialization activities. While the Company anticipates that the funding
available under the line of credit, capital lease line and Investment Agreement
will be sufficient to meet its capital requirements for the foreseeable future,
the Company may require funding in addition to that available under these
agreements, and may seek additional funding through collaborative agreements or
through public or private sale of securities prior to the commercialization of
Old Amati products. The Company had no material commitments for capital
expenditures as of July 27, 1996.
 
    RISK FACTORS
 
    The information about the Company included or incorporated by reference
herein contains forward looking statements that involve risks and uncertainties,
including the risks detailed below. The Shares of Common Stock offered hereby
involve a high degree of risk and prospective purchasers should carefully
consider the following factors.
 
    HISTORY OF LOSSES.  The Company had net income in the fiscal year ended July
29, 1995 of approximately $1,836,000 and had a net loss in the fiscal year ended
July 27, 1996 of approximately $34,078,000
 
                                       14
<PAGE>
(including a charge related to the Merger of approximately $31,554,000). Due in
part to the Merger, the Company is not expected to operate profitably in the
foreseeable future as the Company continues research, development, production
and marketing activities. There can be no assurance that the Company will ever
attain profitability. Any long-term viability, profitability and growth from the
Company' technology will depend upon successful commercialization of products
resulting from its research and product development activities. Extensive
additional research and development will be required prior to commercialization
of certain products. There can be no assurance that the Company will be able to
develop commercially viable products from its technology, generate significant
revenues and/or achieve profitability.
 
    NEED FOR ADDITIONAL CAPITAL.  During 1996, the Company secured a line of
credit for $1,250,000 and a capital lease line of $1,500,000 and entered into an
Investment Agreement with the Investors, which provides to the Company up to $15
million in equity financing. In a related transaction, the Company borrowed
$3,000,000 from the Investors, which is secured by all of the Company's
intellectual property. The Company intends to repay this loan upon completion of
the financing. The Company's future capital requirements will depend on many
factors, including sales levels, progress in research and development programs,
the establishment of collaborative agreements, and costs of manufacturing
facilities and commercialization activities. The Company may require funding in
addition to that available under its line of credit, capital lease line and the
Investment Agreement. There can be no assurance that such additional funding
will be available on acceptable terms, if at all. If additional funds are
required and not available, the Company could be required to curtail
significantly or defer, temporarily or permanently, one or more of its research
ad development programs or to obtain funds through arrangements that may require
the Company to relinquish certain technology or product rights.
 
    MARKET FOR ADSL PRODUCTS STILL UNDER DEVELOPMENT; PRINCIPAL ADSL MARKET
OUTSIDE OF THE UNITED STATES.  ADSL was developed to transmit digital video over
copper wire and also has application in providing access to the Internet over
copper wire. Although the current infrastructure in the local distribution
networks of telephone companies is based on copper wire, there can be no
assurance that telephone companies will pursue the deployment of ADSL systems
or, if deployment occurs, as to the volume and timing of such deployment.
Significant deployment may be prevented or delayed by a number of factors,
including cost, regulatory barriers, lack of programming content, lack of
consumer demand and the availability of alternative technologies. Access systems
with high performance broadband capability, such as the ADSL system, may be
attractive to telephone companies only to the extent that the telephone
companies plan to offer broadcast video, video-on-demand or Internet access
services which utilize the full features of a high performance local
distribution network. Substantial amounts of time, effort and money will be
required to develop such high performance services. There can be no assurance
that sufficient programming content for video services will be developed to
justify deploying digital video transmission systems, or that programming
content will be both attractive to consumers and offered at prices that will
create a mass market. If such high performances services are offered, and there
is demand for them, there can be no assurance that telephone companies will
select ADSL over competing technologies, such as fiber-to-the-curb, hybrid
fiber-coaxial ("HFC"), and wireless communications. Fiber-to-the curb, HFC and
wireless systems have greater bandwidth than the ADSL products being developed
by the Company. Although Internet access services may provide a market for ADSL
in the United States, because foreign telephone companies currently face less
competition from cable companies than telephone companies face in the United
States, the Company believes that its principal markets for ADSL video
applications will be outside the United States.
 
    PRICE COMPETITIVENESS OF ADSL PRODUCTS.  The Company believes that in order
to design and manufacture commercially acceptable ADSL products, cost
improvements beyond those available with current technology will be necessary.
The future success of the Company will depend, in part, on it ability to develop
ADSL products that compete effectively on the basis of price and performance.
Current prices are significantly higher than those that the Company believes
would be necessary for mass deployment of
 
                                       15
<PAGE>
ADSL products. There can be no assurance that the Company will be successful in
developing ADSL products that can be sold at prices which are viable in the
market.
 
    RAPID TECHNOLOGICAL CHANGE; COMPETITION IN THE TELECOMMUNICATION
TRANSMISSION BUSINESS.  Competition from existing companies, including major
communications companies, is expected to increase. Most of the Company's
competitors in the communications industry are more established, benefit from
greater market recognition and have greater financial, technical, production and
marketing resources than the Company. Some competitors are developing alternate
access technologies, such as HFC, fiber-to-curb and wireless systems, that may
prove technologically superior or more cost effective than the Company's
technology. There can be no assurance that developments by others will not
render the Company's products or technologies obsolete or noncompetitive or that
the Company will be able to keep pace with new technological developments.
 
    COMPETITION IN THE PC TO MAINFRAME CONNECTIVITY BUSINESS.  The PC to
Mainframe Connectivity market is highly competitive and is characterized by
rapid advances in technology which frequently result in the introduction of new
products with improved performance characteristics, thereby subjecting the
Company's products to the risk of technological obsolescence. The Company's
ability to compete is dependent on several factors, including reliability,
product performance, quality, features, distribution channels, name awareness,
customer support, product development capabilities, and the ability to meet
delivery schedules. The Company competes, directly or indirectly, with a broad
range of companies in the PC-Connectivity business, many of whom have
significantly greater financial and other resources. In addition, the Company is
only competing for a limited and declining segment of the PC-Connectivity
market, which is itself declining and expected to continue to decline. The
Company expects revenues from its PC-Connectivity business to continue to
decline.
 
    COMPETITION FOR VDSL STANDARDS.  The Company expects to apply its DMT
technology to the development of VDSL products for the transmission of digital
video service in connection with a fiber-optic backbone to cover the distance
from this platform or node to subscribers' homes over copper wire or coaxial
cable. ANSI has not yet awarded the standard for VDSL technology, and the
competition for the American National Standards Institute ("ANSI") standard for
VDSL is expected to be intense. AT&T, as well as other companies with greater
resources than the Company, are expected to compete for these standards. There
is no assurance that the Company's DMT technology will be successful in
obtaining the ANSI VDSL standard.
 
    DEPENDENCE ON COMPLEMENTARY PRODUCTS.  Widespread use of ADSL and VDSL
products for digital video service will depend on the commercial availability of
other products and components, including the video content, digital switches,
video servers, encode/decode equipment, and set-top boxes in subscribers' homes.
There can be no assurance that other suppliers will develop and market these
complementary components effectively or that these components, when combined
with the Company's ADSL and VDSL products, will be a cost-effective means of
transmitting video-on-demand or video dialtone.
 
    DEPENDENCE ON LARGE CUSTOMERS AND SYSTEM INTEGRATORS.  The Company expects
to sell many of its telecommunication transmission products to large
telecommunications service companies which serve as integrators for the various
component systems that make up a video-on-demand or multimedia system. These
systems integrators in turn sell the systems to telephone companies for
distribution to their subscribers. The Company is largely dependent on these
systems integrators for the introduction of its products to field trials. There
can be no assurance that systems integrators will select the Company's products
for field trials or, if they do initially select the Company's products, that
they will continue to use them. In addition, telephone companies are generally
reluctant to deploy new technologies available only from a single source,
especially when the supplier is as relatively small as the Company, and often
require the availability of alternative sources before deploying a new
technology. This reluctance may put the Company at a competitive disadvantage
relative to some of its competitors. Further, acceptance of the Company's
products by these customers may require the Company to relinquish rights to its
technology or
 
                                       16
<PAGE>
products. There can be no assurance, however, that even if the Company were to
relinquish such rights to its technology or products, telephone companies would
deploy the Company's ADSL or VDSL products.
 
   
    CUSTOMER CONCENTRATION; RELIANCE ON SALES TO IBM.  Sales to IBM for PC to
Mainframe connectivity and related products accounted for approximately 65%, 83%
and 69% of the Company's net sales in fiscal 1994, 1995 and 1996, respectively.
Since IBM considers product sales and market data confidential, the Company has
very little ability to anticipate future demands and IBM is not obligated to
purchase any specified amount of products. For its PC-Connectivity products, the
Company is highly dependent on sales to IBM and expects that quarterly and
annual results could be volatile due to its dependence on this dominant
customer. In addition, there can be no assurance that IBM will continue to
distribute and support the Company's products. The Company's principal contract
with IBM expires in December 1996. Further, IBM may terminate its agreements
with the Company upon 30 days' notice without a significant penalty.
    
 
    INTERNATIONAL BUSINESS.  The Company expects that sales outside of the
United States will represent a significant portion of its future sales,
especially of the Company's ADSL products. Operations outside of the United
States are subject to various risks, including exposure to currency
fluctuations, the imposition of governmental controls, the need to comply with a
wide variety of foreign and United States export laws, political and economic
instability, trade restrictions, changes in tariffs and taxes, and longer
payment cycles typically associated with international sales. The inability of
the Company to design products to comply with foreign standards or any
significant or prolonged delay in the Company's international sales could have a
material adverse effect on the Company's future business and results of
operations.
 
    REGULATORY MATTERS.  Telephone companies, which constitute the initial
primary market for the Company's telecommunication transmission products, and
cable television companies, which may become a future market for such products,
are subject to extensive regulation by both the federal and state governments in
the United States and by foreign governments. Many of these regulations have the
effect of limiting the economic incentive of telephone companies to deploy new
technologies. Restrictions on telephone companies and cable television companies
may materially and adversely affect demand for the products of the Company.
Recent legislation passed by Congress will significantly alter the regulations
on telephone companies and cable companies in the United States, and there can
be no assurance that such legislation will not adversely affect the
commercialization of the Company's products. In addition, both in the United
States and abroad, rates for telecommunications services are governed by tariffs
or licensed carriers that are subject to regulatory approval. These tariffs also
could have a material adverse affect on the demand for the Company's products.
 
    DEPENDENCE ON SUPPLIERS AND THIRD-PARTY MANUFACTURERS.  Certain key
components in the Company's products, such as integrated circuits, are currently
available only from single sources. The Company does not have any long-term
supply contracts with its sole source vendors and purchases these components on
a purchase order basis. In addition, certain components and subassemblies for
the Company's products have long lead times. While the Company seeks to
accurately forecast its requirements, inaccuracies in its forecast could result
in shortages or oversupplies of these components. The inability to obtain
sufficient quantities of sole source components or subassemblies as required, or
to develop alternative sources as required in the future, or inaccuracies in
forecasts for long lead time components or subassemblies could result in delays
or reductions in product shipments or product redesigns which would materially
and adversely affect the Company's business, operating results and financial
condition. In addition, increases in the prices of components for which the
Company does not have alternate sources could materially and adversely affect
the Company's operating results.
 
    The Company intends to outsource a portion of its manufacturing operations
to independent third party manufacturers. There are risks associated with the
use of independent manufacturers, including unavailability of or delays in
obtaining adequate supplies of products and reduced control of manufacturing
quality and production costs. There can be no assurance that the Company's third
party manufacturers
 
                                       17
<PAGE>
will provide adequate supplies of quality products on a timely basis. The
inability to obtain such products on a timely basis would have a material
adverse effect on the Company's business, operating results and financial
condition.
 
    PATENTS AND TRADE SECRETS.  There can be no assurance that any patents owned
or controlled by the Company will provide commercially significant protection of
the Company's technology or ensure that the Company may not be determined to
infringe valid patents of others. The Company's patents have not been tested in
court, and the validity and scope of the Company's proprietary rights could be
challenged. The Company has also received foreign patents, but since the patent
laws of foreign countries differ from those of the United States, the degree of
protection afforded by any foreign patents may be different from that available
under U.S. patent laws.
 
    The Company also relies on trade secrets and proprietary know-how which it
seeks to protect by confidentiality agreements with its collaborators, employees
and consultants. There can be no assurance that these agreements will not be
breached, that the Company will have adequate remedies for any breach or that
the Company's trade secrets and proprietary know-how will not otherwise become
known or be discovered by competitors.
 
    THE COMPANY'S RSI LAWSUIT.  The Company is a defendant in a suit brought in
November 1993 alleging repetitive stress injuries ("RSI") resulting from the use
of the Company's products claiming $1 million in compensatory and $10 million in
punitive damages. The Company has tendered defense of the suit to its insurance
carriers, but there can be no assurance that the suit will not have a material
adverse effect on the financial position or results of operations of the
Company.
 
    POSSIBLE VOLATILITY OF STOCK PRICE; SHARES ELIGIBLE FOR FUTURE SALE.  The
market price of the Company's Common Stock has been and may continue to be
highly volatile. Future events, many of which will be beyond the control of the
Company, as well as announcements related to technology and product development
and collaborative arrangements and expected quarterly fluctuations in revenues
and financial results, may have a significant impact on the market price of the
Company's Common Stock. Future sales of Shares by the Investors which is a party
for the Investment Agreement or by other current stockholders and by option
holders and warrant holders who exercise the Company stock options or warrants
could have a depressive effect on the market price of the Company's Common
Stock.
 
                                       18
<PAGE>
ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
 
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To Amati Communications Corporation:
 
    We have audited the accompanying consolidated balance sheets of Amati
Communications Corporation (a Delaware corporation) and subsidiaries as of July
27, 1996 and July 29, 1995, and the related consolidated statements of
operations, stockholders' equity and cash flows for each of the three years
ended July 27, 1996, July 29, 1995, and July 30, 1994. These financial
statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
    In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Amati Communications
Corporation and subsidiaries as of July 27, 1996 and July 29, 1995, and the
results of their operations and their cash flows for each of the three years
ended July 27, 1996, July 29, 1995, and July 30, 1994 in conformity with
generally accepted accounting principles.
 
                                          ARTHUR ANDERSEN LLP
 
   
San Jose, California
August 30, 1996 (except with respect
  to the matter discussed in Note 13, as to
  which the date is October 8, 1996)
    
 
                                       19
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
                          CONSOLIDATED BALANCE SHEETS
 
<TABLE>
<CAPTION>
                                                                                             JULY 29,    JULY 27,
                                                                                               1995        1996
                                                                                            ----------  ----------
                                                                                            (DOLLARS IN THOUSANDS)
<S>                                                                                         <C>         <C>
                                                      ASSETS
Current assets:
  Cash and cash equivalents...............................................................  $    1,066  $      886
  Short-term investments..................................................................       2,425      --
  Accounts receivable, less allowance of $21 in 1995 and $30 in 1996......................       1,933       1,524
  Inventories:
    Finished goods........................................................................           1           1
    Work in process.......................................................................         711         890
    Purchased parts.......................................................................         715         725
                                                                                            ----------  ----------
                                                                                                 1,427       1,616
  Other current assets....................................................................         942       1,156
                                                                                            ----------  ----------
      Total current assets................................................................       7,793       5,182
                                                                                            ----------  ----------
Equipment and leasehold improvements, at cost:
  Machinery and equipment.................................................................       2,772       3,436
  Furniture and fixtures..................................................................         188         187
  Leasehold improvements..................................................................         505         532
                                                                                            ----------  ----------
                                                                                                 3,465       4,155
Less: Accumulated depreciation and amortization...........................................      (2,879)     (3,096)
                                                                                            ----------  ----------
  Equipment and leasehold improvements, net...............................................         586       1,059
                                                                                            ----------  ----------
Old Amati advances and acquisition costs..................................................       3,240      --
Other assets..............................................................................         492      --
                                                                                            ----------  ----------
      TOTAL ASSETS........................................................................  $   12,111  $    6,241
                                                                                            ----------  ----------
                                                                                            ----------  ----------
 
                                 LIABILITIES AND STOCKHOLDERS' EQUITY
 
Current liabilities:
  Current maturities of capitalized lease obligations.....................................  $       10  $   --
  Trade accounts payable..................................................................         612         643
  Accrued expenses........................................................................         777       1,272
  Deferred revenue........................................................................         192       1,957
  Notes payable...........................................................................      --             395
                                                                                            ----------  ----------
      Total current liabilities...........................................................       1,591       4,267
                                                                                            ----------  ----------
Long-term liabilities:
  Obligations under lease commitments.....................................................         294         294
                                                                                            ----------  ----------
      Total long-term liabilities.........................................................         294         294
                                                                                            ----------  ----------
Commitments (Note 9)......................................................................      --          --
Stockholders' equity:
  Preferred stock--par value $100 per share
    Authorized--5,000 shares
    Outstanding--none.....................................................................      --          --
  Common stock--par value $.20 per share
    Authorized--20,000,000 shares
    Outstanding--11,569,077 shares in 1995 and 17,692,802 shares in 1996..................       2,314       3,539
  Additional paid-in capital..............................................................      33,324      57,631
  Accumulated deficit.....................................................................     (25,412)    (59,490)
                                                                                            ----------  ----------
      Total Stockholders' equity..........................................................      10,226       1,680
                                                                                            ----------  ----------
      TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY..........................................  $   12,111  $    6,241
                                                                                            ----------  ----------
                                                                                            ----------  ----------
</TABLE>
 
   The accompanying notes are an integral part of these consolidated balance
                                    sheets.
 
                                       20
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
 
<TABLE>
<CAPTION>
                                                                                     FOR THE THREE YEARS ENDED
                                                                                  --------------------------------
                                                                                  JULY 30,   JULY 29,    JULY 27,
                                                                                    1994       1995        1996
                                                                                  ---------  ---------  ----------
                                                                                  (IN THOUSANDS, EXCEPT PER SHARE
                                                                                              AMOUNTS)
<S>                                                                               <C>        <C>        <C>
Net sales.......................................................................  $   8,236  $  12,040  $   12,085
Cost of sales...................................................................      4,428      6,716       7,404
                                                                                  ---------  ---------  ----------
      Gross margin..............................................................      3,808      5,324       4,681
                                                                                  ---------  ---------  ----------
Operating expenses:
  Research and development......................................................      1,429      1,595       3,837
  Marketing and sales...........................................................        884        861         953
  General and administrative....................................................      1,177      1,229       2,519
  Write off of acquired in-process research and development.....................     --         --          31,554
                                                                                  ---------  ---------  ----------
      Total operating expenses..................................................      3,490      3,685      38,863
                                                                                  ---------  ---------  ----------
  Income (loss) from operations.................................................        318      1,639     (34,182)
                                                                                  ---------  ---------  ----------
Other income (expense):
  Interest income...............................................................        233        301         168
  Interest expense..............................................................        (21)        (7)        (21)
                                                                                  ---------  ---------  ----------
      Total other income........................................................        212        294         147
                                                                                  ---------  ---------  ----------
Income (loss) before provision for income taxes.................................        530      1,933     (34,035)
  Provision for Income taxes....................................................         27         97          43
                                                                                  ---------  ---------  ----------
NET INCOME (LOSS)...............................................................  $     503  $   1,836  $  (34,078)
                                                                                  ---------  ---------  ----------
                                                                                  ---------  ---------  ----------
NET INCOME (LOSS) PER SHARE.....................................................  $     .04  $     .16  $    (2.21)
                                                                                  ---------  ---------  ----------
                                                                                  ---------  ---------  ----------
WEIGHTED AVERAGE NUMBER OF COMMON SHARES AND COMMON SHARE EQUIVALENTS...........     12,319     11,491      15,448
                                                                                  ---------  ---------  ----------
                                                                                  ---------  ---------  ----------
</TABLE>
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                       21
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
                CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
 
<TABLE>
<CAPTION>
                                                                       FOR THE THREE YEARS ENDED JULY 27, 1996
                                                              ---------------------------------------------------------
                                                                  COMMON STOCK
                                                              --------------------   PAID-IN   ACCUMULATED
                                                               SHARES     AMOUNT     CAPITAL     DEFICIT       TOTAL
                                                              ---------  ---------  ---------  ------------  ----------
                                                                                   (IN THOUSANDS)
<S>                                                           <C>        <C>        <C>        <C>           <C>
Balance, July 31, 1993......................................     12,739  $   2,548  $  34,442   $  (27,751)       9,239
  Exercise of employee stock options........................         76         15         50       --               65
  Stock repurchase..........................................       (859)      (172)      (843)      --           (1,015)
  Net income................................................     --         --         --              503          503
                                                              ---------  ---------  ---------  ------------  ----------
Balance, July 30, 1994......................................     11,956      2,391     33,649      (27,248)       8,792
  Exercise of employee stock options........................        150         30        132       --              162
  Stock repurchase..........................................       (537)      (107)      (457)      --             (564)
  Net income................................................     --         --         --            1,836        1,836
                                                              ---------  ---------  ---------  ------------  ----------
Balance, July 29, 1995......................................     11,569      2,314     33,324      (25,412)      10,226
  Exercise of employee stock options........................      1,238        248      1,327       --            1,575
  Exercise of warrants from merger..........................        231         46        (46)      --           --
  Issuance of shares from merger............................      4,655        931     23,026       --           23,957
  Net loss..................................................     --         --         --          (34,078)     (34,078)
                                                              ---------  ---------  ---------  ------------  ----------
BALANCE, JULY 27, 1996......................................     17,693  $   3,539  $  57,631   $  (59,490)  $    1,680
                                                              ---------  ---------  ---------  ------------  ----------
                                                              ---------  ---------  ---------  ------------  ----------
</TABLE>
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                       22
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                                                      FOR THE THREE YEARS ENDED
                                                                                  ---------------------------------
                                                                                   JULY 30,   JULY 29,    JULY 27,
                                                                                     1994       1995        1996
                                                                                  ----------  ---------  ----------
                                                                                           (IN THOUSANDS)
<S>                                                                               <C>         <C>        <C>
Cash Flows from Operating Activities:
Net income (loss)...............................................................  $      503  $   1,836  $  (34,078)
  Adjustments to reconcile net income (loss) to net cash provided by (used for)
    operating activities:
    Depreciation and amortization...............................................         400        678         846
    Provision for bad debts.....................................................      --         --              20
    Loss on retirement of capital equipment.....................................         126         41         153
    Write off of in-process research and development............................      --         --          31,554
  Changes in assets and liabilities:
    Decrease (increase) in accounts receivable..................................        (439)      (528)      1,340
    Increase in inventories.....................................................        (535)       (33)       (189)
    Increase in other assets....................................................         (64)      (316)       (194)
    Decrease in accounts payable & accrued expenses.............................        (407)      (315)       (599)
    Decrease in other long-term liabilities.....................................        (584)      (124)     --
                                                                                  ----------  ---------  ----------
      Total adjustments.........................................................      (1,503)      (597)     32,931
                                                                                  ----------  ---------  ----------
NET CASH PROVIDED BY (USED FOR) OPERATING ACTIVITIES............................      (1,000)     1,239      (1,147)
                                                                                  ----------  ---------  ----------
Cash Flows from Investing Activities:
  Advances to Old Amati and acquisition costs...................................      --         (3,240)     (2,266)
  Capital expenditures..........................................................        (251)       (61)       (757)
  Capitalized software development costs........................................        (455)    --          --
  Purchase of short-term investments............................................     (14,207)    (5,862)     --
  Proceeds from sale of investments.............................................       8,815      8,829       2,425
                                                                                  ----------  ---------  ----------
NET CASH USED FOR INVESTING ACTIVITIES..........................................      (6,098)      (334)       (598)
                                                                                  ----------  ---------  ----------
Cash Flows from Financing Activities:
  Proceeds from the exercise of stock options...................................          65        162       1,575
  Payments on capital lease obligations.........................................        (107)       (82)        (10)
  Stock repurchase..............................................................      (1,015)      (564)     --
                                                                                  ----------  ---------  ----------
NET CASH PROVIDED BY (USED FOR) FINANCING ACTIVITIES............................      (1,057)      (484)      1,565
                                                                                  ----------  ---------  ----------
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS............................      (8,155)       421        (180)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD................................       8,800        645       1,066
                                                                                  ----------  ---------  ----------
CASH AND CASH EQUIVALENTS AT END OF PERIOD......................................  $      645  $   1,066  $      886
                                                                                  ----------  ---------  ----------
</TABLE>
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                       23
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
                                 JULY 27, 1996
 
NOTE 1  OPERATIONS OF THE COMPANY
 
    BUSINESS
 
    Amati Communications Corporation ("Amati" or the "Company") is a leading
developer of advanced transmission equipment utilizing Discrete Multi-tone
("DMT") technology for the ("ADSL"), Very high-speed Digital Subscriber Line
("VDSL") and cable modem markets. The Company is the holder of the ADSL/DMT
patents and has licensed the technology to companies such as Motorola, NEC and
Nortel. The Company is also a provider of network connectivity systems for the
internetworking and OEM marketplaces. The Company is subject to a number of
risks, including dependence on key employees for technology development and
support, dependence on a few significant customers, potential competition from
larger more established companies, and its ability to obtain adequate financing
to support its growth.
 
    On November 28, 1995, the Company and Amati Communications Corporation ("Old
Amati"), a privately held Mountain View, California based company completed a
merger (the "Merger") by which Old Amati became a wholly-owned subsidiary of the
Company. Effective as of the Merger, the Company's name was changed to Amati
Communications Corporation and its common stock began trading on the Nasdaq
National Market under the symbol "AMTX".
 
NOTE 2  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
    CONSOLIDATION
 
    The consolidated financial statements include the accounts of the Company
and its wholly-owned subsidiaries. All significant intercompany accounts and
transactions have been eliminated.
 
    INVENTORIES
 
    Inventories are stated at the lower of cost (first-in, first-out) or market,
and include materials, labor and manufacturing overhead. Inventory is valued at
currently adjusted standards which approximate actual costs on a first-in,
first-out basis.
 
    DEPRECIATION AND AMORTIZATION
 
    Depreciation and amortization are provided using the straight-line method
over the estimated useful lives of the related assets. Machinery and equipment
and furniture and fixtures generally have lives ranging from 3 to 5 years.
Leasehold improvements are depreciated over the shorter of the lease term or the
useful life.
 
    SOFTWARE DEVELOPMENT COSTS
 
    The Company capitalizes software development costs in accordance with
Statement of Financial Accounting Standards No. 86 ("SFAS 86"). The
capitalization of these costs begins when technological feasibility of the
related product has been achieved, which has been defined as the point in time
that the Company has developed a beta version of the software product.
Capitalization ends when the product is available for general release to
customers. Amortization is computed on an individual product basis and is the
greater of (a) the ratio of current gross revenues for a product to the total
current and anticipated future gross revenues for that product or (b) the
straight-line method over the estimated economic life of
 
                                       24
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                 JULY 27, 1996
 
NOTE 2  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
the product. Currently the Company is using an estimated economic life of three
years for all capitalized software costs.
 
    In fiscal 1995 and 1996, there were no capitalization of software
development costs as the criteria for capitalization had not been met. During
fiscal 1994, the Company capitalized software of $455,000 and there was no
amortization of capitalized software development costs because none of the
capitalized software projects were available for general release. In fiscal 1995
and 1996, the amortization of capitalized software development costs charged to
cost of sales was $310,000 and $246,000, respectively.
 
    Capitalized software development costs related to the Company's OEM market
business, shown in other assets in the accompanying Consolidated Balance Sheets
was $492,000 for fiscal 1995 and $246,000 included in other current assets for
fiscal 1996.
 
    ACCRUED EXPENSES
 
    Accrued expenses include the following:
 
<TABLE>
<CAPTION>
                                                    JULY 29, 1995   JULY 27, 1996
                                                       -------         -------
<S>                                                 <C>             <C>
Accrued employee compensation.....................  $         350   $          793
Facilities reserve................................            126         --
Other.............................................            301              479
                                                            -----           ------
                                                    $         777   $        1,272
                                                            -----           ------
                                                            -----           ------
</TABLE>
 
    REVENUE RECOGNITION
 
    The Company generally recognizes revenue from product sales upon shipment to
the customer. Revenues from software and engineering development services are
recognized as the Company performs the services in accordance with contract
terms. Revenues from maintenance and extended warranty agreements are recognized
ratably over the term of the agreement. The Company also licenses products to
OEMs and recognizes royalties as specified in the license agreement when
shipment of the licensed product by the OEM is reported to the Company. Service
maintenance, warranty and support revenues accounted for less than 10% of the
Company's total revenues.
 
    The Company recognizes revenue from sales of software in accordance with the
American Institute of Certified Public Accountants' Statement of Position
("SOP") 91-1, "Software Revenue Recognition." The SOP requires, among other
things, that the sales value of post contract customer support which is included
as part of an initial warranty period, must be deferred and amortized over the
warranty period. Deferred revenues related to post-contract customer support
were $68,000 and $123,000 for fiscal years 1995 and 1996, respectively. These
costs are included in accrued expenses in the Company's Consolidated Balance
Sheets.
 
    SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
 
    For purposes of the Statements of Cash Flows, cash and cash equivalents are
defined as cash in banks and highly liquid investments with original maturity
dates of three months or less.
 
                                       25
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                 JULY 27, 1996
 
NOTE 2  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    Cash paid for interest was $21,000, $7,000, and $56,000 for the fiscal years
1994, 1995 and 1996, respectively. Cash paid for income taxes were $34,000,
$20,000, and $73,000 for fiscal years 1994, 1995 and 1996, respectively.
 
    INVESTMENTS
 
    In accordance with SFAS No. 115, the Company has classified all of its
marketable debt securities as held-to-maturity, and has accounted for these
investments at amortized cost. Accordingly, no adjustment for unrealized holding
gains or losses has been reflected in the Company's financial statements. At
July 29, 1995, the Company's held-to-maturity securities consisted of treasury
bills with contractual maturities of less than twelve months and the carrying
amount of these investments approximated market value.
 
    FUNDED DEVELOPMENT AGREEMENTS
 
    The Company has entered into certain funded development arrangements with
IBM. These arrangement typically provide funding to the Company to develop on a
best efforts basis certain products or product enhancements which IBM is
interested in reselling to its customers. Under these arrangements, the Company
retains the rights to manufacture the developed products and IBM purchases the
manufactured products from the Company for distribution to IBM's customers. The
arrangements typically include a minimum purchase commitment by IBM if the
development is successful. Costs under these agreements are deferred until the
related development revenues are recognized. Revenues under these agreements are
generally recognized when certain contractual milestones are met. Total revenues
recognized under these agreements were $555,000, $276,000 and $419,000 in fiscal
1994, 1995 and 1996, respectively.
 
    USE OF ESTIMATES IN THE PREPARATION OF FINANCIAL STATEMENTS
 
    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the period.
Actual results could differ from those estimates.
 
    RECLASSIFICATION
 
    Prior years' amounts in the Consolidated Financial Statements have been
reclassified where necessary to conform to the fiscal 1996 presentation.
 
NOTE 3  CONCENTRATIONS OF CREDIT RISK AND MAJOR CUSTOMERS
 
    Financial instruments which may potentially subject the Company to a
concentration of credit risk principally consist of accounts receivable. The
Company generally does not require collateral on accounts receivable as the
majority of the Company's customers are large, well established companies.
 
    During November 1995, the Company began shipping the Overture series of
transceivers. The Overture 4 is a prototype that does not have a low enough cost
or power consumption for mass deployment and is to be phased out in favor of the
next series of Overture 8. In the third quarter of fiscal 1996, the Company
delivered the Overture 8, which is characterized by a high bandwidth as defined
by the ANSI
 
                                       26
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                 JULY 27, 1996
 
NOTE 3  CONCENTRATIONS OF CREDIT RISK AND MAJOR CUSTOMERS (CONTINUED)
standards. This product is currently installed in its first field trial of
broadcast video in Australia. Sales in fiscal 1996 of the Overture 4 and
Overture 8 series of transceivers for use in field trials were $999,000 and
$819,000, respectively. In addition, contract revenues of $148,000 from
customization of products were also realized in fiscal 1996. The Company
anticipates the Overture series of products will continue to be represented at
international field trials in fiscal 1997.
 
    The Company also designs, manufactures and markets data communications
equipment and provides technical support and maintenance services related
thereto. Sales to IBM as a percent of net sales were 65%, 83% and 69% in fiscal
1994, 1995 and 1996, respectively. The Company has a concentration of accounts
receivable with IBM of $724,000 as of July 27, 1996.
 
    Export sales of connectivity products, primarily to Western Europe and
Canada in fiscal 1994, 1995 and 1996, represented 1-2% of total net sales.
Shipments of the Overture series of transceivers primarily to the countries of
Australia, Israel, Germany and Italy accounted for 15% of total revenues in
fiscal 1996.
 
NOTE 4  LICENSE AGREEMENTS
 
   
    The Company has certain license agreements (the "Original Agreements") with
Stanford University and University Ventures II, a California limited investment
partnership, whereby it was granted exclusive worldwide rights to core
technology and was required to further develop commercial applications and
licensed products in the field of use to maintain these agreements. In exchange
for the Original Agreements, the Company agreed to issue 125,000 shares of
Series A convertible preferred stock to each licensor and pay certain royalties
on revenue generated from the licensed technology. Both Original Agreements
contained antidilution provisions in the event the Company raised capital from
the sale of stock. The term of the Original Agreements extends to the last
expiration date of the licensed patents. The Company accounted for the license
agreements as a transfer of nonmonetary assets from its founders and recorded
the license at the transferor's historical cost basis of zero. On May 1, 1994,
the Original Agreement with Stanford University was revised to include a
one-time fee of $250,000 and an annual license maintenance fee of $25,000. The
revised Original Agreements provides for Stanford University to receive higher
royalties on the Company's revenues. Stanford University may terminate the
agreement if the Company fails to remedy any conditions causing default, breach
or incorrect reporting under the terms and conditions of the license agreement
within thirty days.
    
 
NOTE 5  NOTES PAYABLE
 
    The Company has notes payable in the amount of $395,000, of which $325,000
bear interest at 8% per annum and $70,000 at 12% per annum . All notes are due
and payable on January 31, 1997. Interest of $85,000 was accrued as of July 27,
1996.
 
    The Company has a bank line of credit for $1,250,000 with an interest
arrangement of 2% per month of the average daily factoring account balance plus
an administration fee of .5% of purchased accounts receivable. Subsequent to
year-end, the Company borrowed $330,000 against this bank line of credit.
 
                                       27
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                 JULY 27, 1996
 
NOTE 6  STOCK OPTION PLANS
 
    The Company has four employees' and one non-employee Directors' stock option
plans. The exercise price of options granted under any plan may not be less than
100% of the fair market value of the stock on the date of grant.
 
    An Incentive Stock Option Plan and a Supplemental Stock Option Plan were
adopted by the Company in 1981. Total shares authorized for issuance pursuant to
the Incentive Stock Option Plan and the Supplemental Stock Option Plan were
875,000 shares and 1,025,000 shares, respectively. As of July 27, 1996, options
to purchase up to 35,000 shares have been granted pursuant to these plans and
remain exercisable, and there are no options available for future grant under
these plans. Employee stock options issued under this plan become exercisable at
the rate of 25% after six months from the date of grant and 25% per year
thereafter, unless determined otherwise by the Board of Directors at the time of
grant. Both plans expired in October 1991. The options that have been granted
under these plans expire ten years after grant.
 
    The Board of Directors adopted the 1990 Stock Option Plan on September 14,
1990, and it was approved by the Company's stockholders on December 14, 1990.
The Company is authorized to issue options to purchase up to 900,000 shares of
Company Common Stock pursuant to the 1990 Stock Option Plan. At a special
meeting of the Company's stockholders held on November 10, 1995, the
stockholders approved an amendment to the Company's 1990 Stock Option Plan to
increase the number of shares available for issuance pursuant to this plan in
conjunction with the Agreement of Merger dated August 3, 1995. The Company may
now issue options to purchase an aggregate of up to 3,500,000 shares pursuant to
the amended 1990 Stock Option Plan. As of July 27, 1996, options to purchase up
to 3,070,836 shares have been granted pursuant to this plan, of which options to
purchase up to 342,675 shares were exercisable on such date and become 17,039
shares were available for future grant under this plan. Employee stock options
issued pursuant to this plan exercisable at the rate of 25% one year from the
date of the merger and 25% per year thereafter. The maximum term of options
granted under this plan is ten years.
 
    The Old Amati 1992 Stock Option Plan and all outstanding and unexercised
options issued pursuant thereto were assumed by the Company upon consummation of
the merger, as approved by the stockholders of the Company on November 20, 1995.
The Company is authorized to grant options to purchase up to an aggregate of
1,591,234 shares of Company Common Stock pursuant to this plan. As of July 27,
1996, options to purchase up to 1,207,713 shares of Company Common Stock have
been granted, pursuant to this plan, including options to purchase up to 374,027
shares which were exercisable as of such date. There are no shares available for
future grants under this plan. Employee stock options under this plan become
exercisable at the rate of 25% one year from the date of grant and with respect
to 1/48 of the number of shares subject to such option each month thereafter.
 
    On July 12, 1996, the Company adopted the 1996 Stock Option Plan, and
authorized 1,000,000 shares of Company Common Stock. As of July 27, 1996 options
to purchase up to 267,500 shares have been granted, no options were exercisable
and 732,500 shares were available for future grants under this plan.
 
    The Company adopted a 1990 Non-Employee Directors' Stock Option Plan on
September 14, 1990, and it was approved by the Company's stockholders on
December 14, 1990. The Company is authorized to issue options to purchase up to
an aggregate of 395,000 shares of Company Common Stock pursuant to this plan. On
the date the plan was adopted, each non-employee Director then in office was
granted an option to purchase up to 25,000 shares of common stock of the
Company. Each person who is elected for
 
                                       28
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                 JULY 27, 1996
 
NOTE 6  STOCK OPTION PLANS (CONTINUED)
the first time to be a non-employee Director will automatically be granted an
option to purchase 25,000 shares of the Company's common stock pursuant to this
plan, which options will be immediately exercisable. On December 2, 1993, the
plan was amended to reduce by 150,000 shares the number of shares available for
issuance pursuant to the plan, leaving 245,000 shares available for grant under
this plan. As of July 27, 1996, options to purchase up to 67,500 shares have
been granted pursuant to this plan, of which options to purchase up to 52,500
shares were exercisable as of such date and 70,000 shares were available for
future grants under this plan.
 
    On September 1 of each year commencing September 1, 1991, an option to
purchase 10,000 shares of the Company's common stock shall automatically be
granted to each non-employee Director then in office. These options become
exercisable at the rate of 25% after six months from the date of grant and 25%
per year thereafter. These options expire ten years after grant.
 
    Stock option activity under these plans was as follows:
 
<TABLE>
<CAPTION>
                                                            OPTIONS      OPTION PRICE
                                                          OUTSTANDING     PER SHARE
                                                          -----------  ----------------
<S>                                                       <C>          <C>
Balance, July 31, 1993..................................    1,405,475
Granted.................................................       20,000   $1.13 - $ 1.13
Exercised...............................................      (76,250)  $0.75 - $ 1.06
Canceled................................................     (253,950)  $1.00 - $ 3.25
                                                          -----------
Balance, July 30, 1994..................................    1,095,275
Granted.................................................      160,000   $1.19 - $ 2.03
Exercised...............................................     (150,250)  $0.75 - $ 1.53
Canceled................................................      (66,100)  $0.75 - $ 1.88
                                                          -----------
Balance, July 29, 1995..................................    1,038,925
Granted.................................................    4,876,145   $0.01 - $22.00
Exercised...............................................   (1,238,077)  $0.01 - $ 8.13
Canceled................................................      (28,444)  $1.13 - $ 2.13
                                                          -----------
Balance, July 27, 1996..................................    4,648,549
                                                          -----------
                                                          -----------
</TABLE>
 
    On July 27, 1996, there were 4,648,549 shares of Company common stock
reserved for issuance upon the exercise of outstanding options and 819,539
shares of common stock reserved for future grants under all stock option plans.
 
    During October 1995, the Financial Accounting Standards Board issued
Statement No. 123 ("SFAS No. 123"), Accounting for Stock-Based Compensation",
which establishes a fair value based method of accounting for stock-based
compensation plans requires additional disclosures for those companies who elect
not to adopt the new method of accounting. SFAS No. 123 will be effective for
fiscal years beginning after December 15, 1995 and management does not expect it
to have a material effect on the Company's financial condition or results of
operations.
 
                                       29
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                 JULY 27, 1996
 
NOTE 7  INCOME TAXES
 
    As of July 27, 1996, the Company's tax net operating loss carryforwards for
federal tax purposes were approximately $26,741,000. The United States Tax
Reform Act of 1986 contains provisions which limit the amount of net operating
loss carryforwards which may be utilized in any given fiscal year when a
significant change in ownership interest occurs. These carryforwards expire in
various amounts through fiscal 2011. The Company also has certain tax credit
carryforwards of $1,395,000 which expire in various amounts through the year
2009. The United States Tax Reform Act of 1986 contains provisions that may
limit the net operating loss carryforwards and research and development credits
available to be used in any given year should certain events occur. Management
of the Company believes, however, that such a limitation will not have a
significant impact on the overall utilization of its net operating loss
carryforwards.
 
    The Company has an additional $2,234,000 of net operating loss carryforwards
which were acquired in connection with a fiscal 1988 acquisition. The change in
ownership of the acquired company will affect the availability and timing of the
amount of prior losses to be used to offset taxable income in future years.
These carryforwards expire in various amounts through the year 2005.
 
    As of July 27, 1996, the Company also has net operating loss carryforwards
of approximately $6,627,000 available to offset future California state taxable
income. These carryforwards expire in various amounts through the year 2001. The
Company also has certain California tax credit carryforwards of $86,000.
 
    The provision for income taxes is as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                                    JULY 30,     JULY 29,     JULY 27,
                                                                      1994         1995         1996
                                                                   -----------  -----------  -----------
<S>                                                                <C>          <C>          <C>
Provision for income taxes:
  Current federal................................................   $      11    $      39    $      17
  Current state..................................................          16           58           26
                                                                          ---          ---          ---
  Total provision for income taxes...............................   $      27    $      97    $      43
                                                                          ---          ---          ---
                                                                          ---          ---          ---
</TABLE>
 
    The difference between the Company's effective income tax rate and the
Federal statutory rate is as follows:
 
<TABLE>
<CAPTION>
                                                                    JULY 30,     JULY 29,     JULY 27,
                                                                      1994         1995         1996
                                                                   -----------  -----------  -----------
<S>                                                                <C>          <C>          <C>
Statutory federal income tax rate................................          34%          34%         (34)%
State income tax rate, net of federal benefit....................           7            7            7
Previous losses not benefited....................................         (36)         (36)          32
                                                                          ---          ---          ---
Income tax rate..................................................           5%           5%           5%
                                                                          ---          ---          ---
                                                                          ---          ---          ---
</TABLE>
 
                                       30
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                 JULY 27, 1996
 
NOTE 7  INCOME TAXES (CONTINUED)
    The major components of the net deferred tax asset are as follows (in
thousands):
 
<TABLE>
<CAPTION>
                                                                    JULY 29,    JULY 27,
                                                                      1995        1996
                                                                    ---------  ----------
<S>                                                                 <C>        <C>
Deferred tax assets:
  Cumulative temporary differences................................  $     471  $    1,468
  Tax credits.....................................................      1,189       1,395
  Net operating loss..............................................      7,662       9,496
  Other accruals..................................................        199         118
                                                                    ---------  ----------
        Total assets..............................................      9,521      12,477
  Valuation allowance.............................................     (9,179)    (12,392)
                                                                    ---------  ----------
  Net deferred income tax asset...................................        342          85
Deferred tax liabilities:
  Capitalized software expenditures...............................        342          85
                                                                    ---------  ----------
        Total liabilities.........................................        342          85
                                                                    ---------  ----------
Total net deferred tax assets.....................................  $       0  $        0
                                                                    ---------  ----------
                                                                    ---------  ----------
</TABLE>
 
NOTE 8  NET INCOME (LOSS) PER SHARE
 
    Net income (loss) per share is based on the weighted average number of
shares outstanding of common stock and common stock equivalents (when dilutive)
using the treasury stock method. No common stock equivalents have been included
in 1996 because the effect would be to decrease the loss per share.
 
NOTE 9  LEASE COMMITMENTS
 
    At July 27, 1996, approximate future minimum rental commitments under all
noncancelable operating leases are as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                                                RENTAL
                                                                RENTALS       RECEIVABLE
FISCAL YEAR                                                    PAYMENTS     UNDER SUBLEASES
- ------------------------------------------------------------  -----------  -----------------
<S>                                                           <C>          <C>
1997........................................................   $   1,029       $     221
1998........................................................         974             252
1999........................................................         974             252
2000........................................................         781          --
2001........................................................         781          --
Thereafter..................................................         736          --
                                                              -----------          -----
                                                               $   5,275       $     725
                                                              -----------          -----
                                                              -----------          -----
</TABLE>
 
    Total rent expense for all operating leases amounted to approximately
$1,128,000, $1,038,000, and $971,000 in fiscal 1994, 1995 and 1996,
respectively. Rent expense in fiscal 1994, 1995 and 1996 is before sublease
income of $231,000, $297,000, and $137,000.
 
                                       31
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                 JULY 27, 1996
 
NOTE 10  LITIGATION
 
    In November 1993, an action was brought against the Company for damages
related to the use of the Company's products. The plaintiff filed a suit
claiming repetitive stress injuries resulting from the use of the Company's
product in the course of employment with American Airlines from the period May
1981 through July 1991. The plaintiff alleges damages in the amount of $1
million and seeks punitive damages of $10 million. The Company believes that the
claim is without merit and has tendered defense of this action to its insurance
carriers. In the opinion of management, the outcome of this litigation will not
have a material adverse effect on the Company's financial position or its
results of operations.
 
NOTE 11  SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)
 
    Quarterly information is for the years ended July 29, 1995 and July 27,
1996.
 
<TABLE>
<CAPTION>
                                                                                 FISCAL 1995 QUARTER ENDED
                                                                      ------------------------------------------------
                                                                      OCTOBER 29,  JANUARY 28,   APRIL 29,   JULY 29,
                                                                         1994         1995         1995        1995
                                                                      -----------  -----------  -----------  ---------
                                                                           (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                                   <C>          <C>          <C>          <C>
Net Sales...........................................................   $   3,063    $   2,638    $   3,036   $   3,303
Gross Profit........................................................   $   1,315    $   1,192    $   1,169   $   1,648
Net Income..........................................................   $     212    $     307    $     441   $     876
Net Income Per Share................................................   $    0.02    $    0.03    $    0.04   $    0.07
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                FISCAL 1996 QUARTER ENDED
                                                                     ------------------------------------------------
                                                                     OCTOBER 28,  JANUARY 27,   APRIL 27,   JULY 27,
                                                                        1995         1996         1996        1996
                                                                     -----------  -----------  -----------  ---------
                                                                          (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                                  <C>          <C>          <C>          <C>
Net Sales..........................................................   $   3,354    $   2,524    $   3,756   $   2,451
Gross Profit.......................................................   $   1,514    $     978    $   1,576   $     613
Net Income (Loss)..................................................   $     816    $ (32,199)   $    (498)  $  (2,197)
Net Income (Loss) Per Share........................................   $    0.07    $   (2.12)   $   (0.03)  $   (0.13)
</TABLE>
 
NOTE 12  ACQUISITION OF OLD AMATI
 
    On November 28, 1995, the Company acquired all of the outstanding shares of
Amati Communications Corporation ("Old Amati") for approximately $29.5 million.
The purchase price consisted of the issuance of 2.6 million shares of Company
common stock in exchange for all shares of Old Amati common stock, 1.5 million
shares of Company common stock in exchange for all shares of Old Amati Series A
Preferred Stock, warrants for the purchase of up to 1.1 million shares of
Company common stock in exchange for all Old Amati warrants, and options to
purchase up to 1.6 million shares of Company common stock in exchange for all
options to purchase Old Amati Common stock. The purchase price also includes
registration and other acquisition costs of $0.8 million, total cash advances to
Old Amati prior to the merger of $5.6 million and is net of the estimated
proceeds from the assumed exercise of Old Amati options and warrants of $3.3
million.
 
    The transaction was accounted for using the purchase method of accounting.
The Company allocated the purchase price to the net assets based upon their
estimated fair values. The fair values of tangible assets acquired and
liabilities assumed were $1.2 million and $3.2 million, respectively. The
balance of the
 
                                       32
<PAGE>
                        AMATI COMMUNICATIONS CORPORATION
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                                 JULY 27, 1996
 
NOTE 12  ACQUISITION OF OLD AMATI (CONTINUED)
purchase price, $31.6 million, was charged to earnings to write-off in-process
research and development that had not reached technological feasibility and had
no alternative future uses.
 
    The following table reflects unaudited pro forma combined results of
operations of the Company and Old Amati on the basis that the acquisition had
taken place and the related charge, noted above, was recorded at the beginning
of the fiscal year for each of the periods presented:
 
<TABLE>
<CAPTION>
                                                                       TWELVE MONTHS ENDED
                                                                      ----------------------
                                                                       JULY 29,    JULY 27,
                                                                         1995        1996
                                                                      ----------  ----------
                                                                       (IN THOUSANDS EXCEPT
                                                                         PER SHARE DATA)
<S>                                                                   <C>         <C>
Revenues............................................................  $   13,092  $   13,512
Net Loss............................................................  $  (35,666) $  (36,527)
Net Loss per Share..................................................  $    (2.21) $    (2.15)
Number of Shares used in Computation................................      16,146      17,008
</TABLE>
 
    In management's opinion, the unaudited pro-forma combined results of
operations are not necessarily indicative of the actual results that would have
occurred had the acquisition been consummated at the beginning of 1995 or at the
beginning of 1996 or of future operations of the combined companies under the
ownership and management of the Company.
 
NOTE 13  SUBSEQUENT EVENT
 
    On October 3, 1996, the Company entered into an Agreement with certain
investors (the "Investors") under which the Company could raise up to
$15,000,000 in equity, subject to certain conditions. The Company anticipates
the initial financing under the Agreement, if completed, would be $10,000,000.
The number of common shares to be issued under the agreement is subject to the
market price at the date of issuance. Furthermore, the number of shares issued
could subsequently be increased if the average share price for a period of time
subsequent to the date of issuance is less than the share price at the date of
issuance. In addition, under the Agreement the Investors were issued warrants to
purchase 600,000 shares of common stock. Such warrants are exercisable for a
period of five years and allow for an optional net exercise whereby the Company
would not receive any cash upon exercise.
 
    In a related transaction, on October 3, 1996 and October 8, 1996, the
Company borrowed an aggregate of $3,000,000 from the Investors, which is secured
by all of the Company's intellectual property. The Company intends to repay this
loan upon completion of the initial financing.
 
ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
         FINANCIAL DISCLOSURE
 
    None.
 
                                       33
<PAGE>
                                    PART III
 
ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT
 
    The Executive Officers and Directors of the Company during the fiscal year
and their ages as of the date of filing of the Form 10-K Registration Statement
are as follows:
 
   
<TABLE>
<CAPTION>
NAME                                         AGE                                   POSITION
- ---------------------------------------      ---      ------------------------------------------------------------------
<S>                                      <C>          <C>
 
Dr. James Gibbons......................          65   Chairman of the Board
 
Donald L. Lucas........................          66   Director
 
James Steenbergen......................               President, Chief Executive Officer, Chief Financial Officer,
                                                 49     Director
 
Dr. John Cioffi........................          39   Chief Technical Officer, Founder, Director
 
Aamer Latif............................          38   Director
 
Christopher Barnes.....................          47   Vice President of European Sales
 
Benjamin Berry.........................          47   Vice President of Marketing
 
David Bivolcic.........................          39   Senior Vice President
 
Ronald Carlini.........................          57   Vice President of Corporate Development
 
Joseph Grady, Jr.......................          49   Vice President of Worldwide Sales
 
James Hood.............................          55   Vice President of Engineering
 
Teresita Medel.........................          49   Treasurer, Secretary and Controller
</TABLE>
    
 
    Dr. James Gibbons served as the Chairman of the Board of Directors of Old
Amati since 1992. Dr. Gibbons is a Professor of Electrical Engineering and has
served as the Dean of the School of Engineering at Stanford University since
1984. Dr. Gibbons currently serves on the Board of Directors of Lockheed
Corporation, Raychem Corporation, Centigram Corporation, El Paso Natural Gas
Company and Cisco Systems, Incorporated. Dr. Gibbons was elected as Chairman of
the Company's Board effective December 4, 1995.
 
   
    Mr. Donald L. Lucas, a venture capitalist, has been a Director of the
Company since 1968. He is also a director of Cadence Design Systems, Inc.,
Oracle Corp., Macromedia, Inc., Racotek, Inc., Transcend Services, Inc., and
Tricord Systems, Incorporated.
    
 
    Mr. James Steenbergen, President and CEO, has been Chief Executive Officer
and President for several high-technology companies involved in the manufacture
and development of systems for the telecommunications industry. These companies
include Optilink Corporation, SRX and Granger Associates. Mr. Steenbergen was
elected to the Company's Board effective December 4, 1995.
 
   
    Dr. John Cioffi, Chief Technical Officer, is the founder of Old Amati and
has served as Vice President of Engineering, Chief Technical Officer and
Director of Old Amati since 1991. Dr. Cioffi has also been a Professor of
Electrical Engineering at Stanford University since 1986. Dr. Cioffi sits on the
technical boards of C-Cube Microsystems, Inc., and has served on the technical
staffs of Bell Laboratories Inc. and IBM's Almaden Research Laboratories. Dr.
Cioffi was elected to the Company's Board effective December 4, 1995.
    
 
    Mr. Aamer Latif was elected President, Chief Executive Officer, Chief
Financial Officer and Director of the Company in May 1993; he was elected
Chairman in July 1995 and served in that capacity until December 1995. Prior to
1993, Mr. Latif served in various positions in Engineering with the Company
since 1980. He resigned as an officer of the Company on November 27, 1995.
 
                                       34
<PAGE>
    Mr. Christopher Barnes, Vice President of European Sales, joined the Company
in July 1996. Mr. Barnes has extensive experience in global high technology
markets, having previously been responsible for international sales in various
leading communications companies, including Marconi UK, DSC Communications and
Telesciences.
 
    Mr. Benjamin Berry, Vice President of Marketing, was previously Vice
President of Marketing and Business Development for Digital Link Corporation, a
manufacturer of high-speed data communications equipment. He has also been a
Division Manager at Granger Associates and a Member of Technical Staff for Bell
Laboratories.
 
    Mr. David Bivolcic was elected Senior Vice President of the Company in May
1993. Prior to that, he served as the Company's Vice President, Operations since
December 1989.
 
    Mr. Ronald Carlini, Vice President of Corporate Development, came to the
Company after holding a variety of senior management positions in the computer
and telecommunications industries, including General Manager and Executive Vice
President at ADACOM Corporation; General Manager and Vice President of Telex
Corporation; and Division Account Marketing Manager at IBM Corporation.
 
    Mr. Joseph Grady, Jr., served as Old Amati's Vice President of Worldwide
Sales from August of 1994 until the merger with the Company, and continues in
that position with the Company. Previously, Mr. Grady served as Assistant Vice
President of Sales of Newbridge Networks Corporation from 1992 to 1994. Mr.
Grady served as Manager of Distribution, Sales and Development for Octel
Communications Corporation from 1991 to 1992. Mr. Grady also served as Vice
President of Telephone Company Sales for Racal Data Communications Inc. for 1985
to 1991.
 
    Mr. James Hood, Vice President of Engineering has thirty years of industry
experience. He served as President and Executive Officer of MERET Optical
Communications, Inc. Prior to that, he was President and Chief executive Officer
of CATEL Telecommunications Inc.
 
    Ms. Teresita Medel was elected Secretary of the Company in December 1994.
She has served as Treasurer and Controller of the Company since July 1993. Prior
to 1993, she had served as the Company's Accounting Manager since 1979.
 
ITEM 11.  EXECUTIVE COMPENSATION
 
    The sections entitled "Executive Compensation" appearing in the Company's
1996 Proxy Statement is incorporated herein by reference.
 
    BOARD COMPENSATION
 
    Each director who was not also an officer or employee of the Company
received a fee of $2,000 per quarter in fiscal 1996. In addition, each such
director received a fee of $2,000 for each Board meeting attended and $2,000 for
each Audit Committee meeting attended during fiscal 1994. Board resolutions
adopted April 26, 1996 discontinues the payment of quarterly and attendance
fees. The Company has a policy of reimbursing directors for reasonable travel
and related expenses incurred in attending Board and Committee meetings. Donald
L. Lucas, a director of the Company, did not receive any of the aforementioned
payments; however, Mr. Lucas in fiscal 1996 received $21,600 in consulting fees
for services rendered to the Company.
 
    Directors who are not employees of the Company or an affiliate of the
Company are eligible to participate in the Company's 1990 Non-Employee
Directors' Stock Option Plan. Pursuant to such plan, on September 1, 1995, each
non-employee Director received an option to purchase up to 10,000 shares of the
Company's Common Stock on September 1, 1995 at an exercise price of $4.63 per
share. Grants are automatically made annually under this plan.
 
                                       35
<PAGE>
ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
    The section entitled "Security Ownership of Certain Beneficial Owners and
Management" appearing in the Company's 1996 Proxy Statement is incorporated
herein by reference.
 
ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
    None.
 
                                       36
<PAGE>
                                    PART IV
 
ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K
 
(A)(1)  INDEX TO FINANCIAL STATEMENTS
 
    The following consolidated financial statements are included in Part II,
Item 8:
 
<TABLE>
<CAPTION>
                                                                                                              PAGE
                                                                                                            ---------
<S>                                                                                                         <C>
Report of Independent Public Accountants..................................................................     18
 
Consolidated Balance Sheets as of July 29, 1995 and July 27, 1996.........................................    19-20
 
Consolidated Statements of Operations for the Three Years Ended July 27, 1996.............................     21
 
Consolidated Statements of Stockholders' Equity for the Three Years Ended July 27, 1996...................     22
 
Consolidated Statements of Cash Flows for the Three Years Ended July 27, 1996.............................     23
 
Notes to Consolidated Financial Statements................................................................    24-35
 
  (2)  INDEX TO FINANCIAL STATEMENT SCHEDULES
 
Schedule II Valuation and Qualifying Accounts.............................................................     44
</TABLE>
 
    All other schedules called for under Regulation S-X are omitted because they
are not applicable, not required, or required information is immaterial or is
shown in the financial statements or notes thereto.
 
  (3)  INDEX TO EXHIBITS
 
    See section (c).
 
(B)  REPORTS ON FORM 8-K
 
    None.
 
(C)  INDEX TO EXHIBITS
 
<TABLE>
<CAPTION>
 EXHIBITS                                                                                                  PAGE
- -----------                                                                                           ---------------
<C>          <S>                                                                                      <C>
      2.1    The Amended and Restated Agreement and Plan of Reorganization and Merger among           Incorporated by
               Registrant, Amati Communications Corporation and IA Acquisition Corporation, dated           Reference
               August 3, 1995 and the Amendment thereto dated October 6, 1995 are filed as Exhibit
               2.1 to the Registrant's Form S-4 Registration Statement File No. 33-62023 dated
               October 16, 1995.
 
      3.1    Restated Certification of Incorporation filed with the Delaware Secretary of State of    Incorporated by
               November 17, 1989 is filed as Exhibit 3.1 to Registrant's Form 10-K Annual Report for        Reference
               its fiscal year ended July 28, 1990.
 
      3.2    By-Laws as amended through July 21, 1989 are filed as Exhibit 3(iii) to Registrant's     Incorporated by
               Form 10-K Annual Report for its fiscal year ended July 29, 1989.                             Reference
 
     10.1*   1981 Incentive Stock Option Plan as amended through October 12, 1987, is filed as        Incorporated by
               Exhibit 10(iii) to Registrant's Form 10-K Annual Report for its fiscal year ended            Reference
               August 1, 1987.
 
     10.2*   1981 Supplemental Stock Option Plan as amended through Incorporated October 12, 1987,    Incorporated by
               is filed as Exhibit 10(iv) to by Reference Registrant's Form 10-K Annual Report for          Reference
               its fiscal year ended August 1, 1987.
</TABLE>
 
                                       37
<PAGE>
<TABLE>
<CAPTION>
 EXHIBITS                                                                                                  PAGE
- -----------                                                                                           ---------------
<C>          <S>                                                                                      <C>
     10.3    Lease dated August 27, 1985 between Registrant and Zanker/North Pointe Associates with   Incorporated by
               respect to Registrant's facilities at 3801 Zanker Road, San Jose, California is filed        Reference
               as Exhibit 10(xiii) to Registrant's Form 10-K Annual Report for its fiscal year ended
               August 3, 1985.
 
     10.4*   1985 Director's Stock Option Plan as amended through December 11, 1987 is filed as       Incorporated by
               Exhibit 28 to Registrant's Form S-8 Registration Statement File No. 33-21103.                Reference
 
     10.5    Lease amendment dated September 19, 1990 between Registrant and Zanker/ North Pointe     Incorporated by
               Associates with respect to Registrant's facilities at 3801 Zanker Road, San Jose,            Reference
               California is filed as Exhibit 10.6 to Registrant's Form 10-K Annual Report for its
               fiscal year ended July 28,1990.
 
     10.6*   1990 Stock Option Plan adopted September 14, 1990 is filed as Exhibit 10.8 to            Incorporated by
               Registrant's Form 10-K Annual Report for its fiscal year ended July 28, 1990.                Reference
 
     10.7*   1990 Non-Employee Director's Stock Option Plan adopted September 14, 1990 is filed as    Incorporated by
               Exhibit 10.9 to Registrant's Form 10-K annual Report for its fiscal year ended July,         Reference
               28, 1990.
 
     10.8    Manufacturing Agreement dated October 9, 1989 between Registrant and International       Incorporated by
               Business Machines Corporation is filed as Exhibit 10.9 to Registrant's Form 10-K             Reference
               Annual Report for its fiscal year ended July 27, 1991 as amended.
 
     10.9    Lease dated February 10, 1994 between Registrant and Zanker/North Pointe Associates      Incorporated by
               with respect to Registrant's facilities at 3801 Zanker, San Jose, California is filed        Reference
               as Exhibit 10.9 to Registrant's Form 10-K Annual Report for its fiscal year ended
               July 30,
 
     10.10   Registration Rights Agreement is filed as Exhibit 10.1 to Registrant's Form S-3 dated    Incorporated by
               March 8, 1996.                                                                               Reference
 
     10.11*  Affiliate's Agreement between the Registrant and Dr. John Cioffi is filed as Exhibit     Incorporated by
               10.3 to Registrant's Form S-3 dated March 8, 1996.                                           Reference
 
     10.12*  Severance Agreement dated May 15, 1995, amended August 12, 1995 between Registrant and   Incorporated by
               Aamer Latif is filed as Exhibit 10.15 to Registrant's Form 10-Q for the quarter ended        Reference
               October 28, 1995.
 
     10.13   License Agreement dated January 1, 1992 between Registrant and Stanford University and   Incorporated by
               University Ventures II, a California limited investment partnership, is filed as             Reference
               Exhibit 10.16 to the Registrant's Form 10-Q for the quarter ended January 27, 1996.
               (Confidential treatment has been requested with respect to specific portions of this
               exhibit)
 
     10.14   License Agreement dated March 16, 1995 between Registrant and Motorola is filed as       Incorporated by
               Exhibit 10.17 to the Registrant's Form 10-Q for the quarter ended January 27, 1996.          Reference
               (Confidential treatment has been requested with respect to specific portions of this
               exhibit).
 
     10.15*  Employment Agreement dated May 5, 1995 with Dr. John Cioffi is filed as Exhibit 10.18    Incorporated by
               to the Registrant's Form 10-Q for the quarter ended January 27, 1996.                        Reference
</TABLE>
 
                                       38
<PAGE>
   
<TABLE>
<CAPTION>
 EXHIBITS                                                                                                  PAGE
- -----------                                                                                           ---------------
<C>          <S>                                                                                      <C>
     10.16   Lease dated July 15, 1996 between Registrant and Berg and Berg Developers with respect   Incorporated by
               to Registrant's facilities at 2043 Samaritan Drive, San Jose is filed as Exhibit             Reference
               10.16 hereto.
 
     10.17*  1996 Stock Option Plan adopted July 12, 1996 is filed as Exhibit 10.17 hereto.           Incorporated by
                                                                                                            Reference
 
     10.18   Investment Agreement dated October 3, 1996 among Registrant, Quantum Industrial          Incorporated by
               Partners LDC, S-C Phoenix Holdings, L.L.C., Winston Partners L.P., Winston Partners          Reference
               II LDC, and Winston Partners II L.L.C. is filed as Exhibit 4.1 to Registrant's Form
               S-3 dated October 8, 1996.
 
     10.19   Form of Class A Warrant is filed as Exhibit 4.2 to Registrant's Form S-3 dated October   Incorporated by
               8, 1996.                                                                                     Reference
 
     10.20   Form of Class B Warrant is filed as Exhibit 4.3 to Registrant's Form S-3 dated October   Incorporated by
               8, 1996.                                                                                     Reference
 
     10.21   Registration Rights Agreement dated October 3, 1996 among Registrant and Quantum         Incorporated by
               Industrial Partners LDC, S-C Phoenix Holdings, L.L.C., Winston Partners L.P., Winston        Reference
               Partners II LDC, and Winston Partners II L.L.C. is filed as Exhibit 4.4 to
               Registrant's Form S-3 dated October 8, 1996.
 
     21.1    A list of Registrant's subsidiaries is filed as Exhibit 21.1 hereto
 
     23.1    Consent of Independent Public Accounts is filed as Exhibit 23.1 hereto.
 
     24.0    Power of Attorney. (see page 45)
</TABLE>
    
 
    The exhibits not filed herewith were previously filed with the Commission as
indicated and are hereby incorporated by reference.
 
- ------------------------
 
*   Management Contracts or Compensatory Plans.
 
                                       39
<PAGE>
                                                                     SCHEDULE II
 
                        AMATI COMMUNICATIONS CORPORATION
 
                       VALUATION AND QUALIFYING ACCOUNTS
 
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                      BALANCE AT   CHARGED TO   CHARGED TO
                                                       BEGINNING     COSTS &       OTHER                     BALANCE AT
DESCRIPTION                                            OF PERIOD    EXPENSES     ACCOUNTS     DEDUCTIONS    END OF PERIOD
- ----------------------------------------------------  -----------  -----------  -----------  -------------  -------------
 
<S>                                                   <C>          <C>          <C>          <C>            <C>
ALLOWANCE FOR DOUBTFUL ACCOUNTS:
  Year ended July 30, 1994..........................   $      32    $  --        $  --        $      (7)(1)   $      25
  Year ended July 29, 1995..........................   $      25    $  --        $  --        $      (4)(1)   $      21
  Year ended July 27, 1996..........................   $      21    $      20    $       5    $     (16)(1)   $      30
 
ACCRUED RESTRUCTURING CHARGE:
  Year ended July 30, 1994..........................   $   1,381    $  --        $  --        $    (540)(2)   $     841
  Year ended July 29, 1995..........................   $     841    $  --        $  --        $    (547)(2)   $     294
  Year ended July 27, 1996..........................   $     294    $  --        $  --        $   --          $     294
</TABLE>
 
- ------------------------
 
(1) Uncollectible accounts written off
 
(2) Usage
 
                                       40
<PAGE>
                                   SIGNATURES
 
   
    Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the Registrant has duly caused this Report to be signed on
its behalf by the undersigned, thereunto duly authorized, on October 28, 1996.
    
 
                                AMATI COMMUNICATIONS CORPORATION
 
                                By:           /s/ JAMES E. STEENBERGEN
                                     -----------------------------------------
                                                James E. Steenbergen
                                      CHAIRMAN OF THE BOARD, PRESIDENT, CHIEF
                                       EXECUTIVE OFFICER, AND CHIEF FINANCIAL
                                                      OFFICER
 
   
    Pursuant to the requirements of the Securities Act of 1934, this Report has
been signed by the following persons in the capacities and on the dates
indicated.
    
 
   
<TABLE>
<CAPTION>
          SIGNATURE                      CAPACITY                  DATE
- ------------------------------  --------------------------  -------------------
<C>                             <S>                         <C>
              *
- ------------------------------  Chairman of the Board        October 28, 1996
      Dr. James Gibbons
 
              *
- ------------------------------  Director                     October 28, 1996
       Donald L. Lucas
 
              *
- ------------------------------  Director                     October 28, 1996
       Dr. John Cioffi
 
              *
- ------------------------------  Director                     October 28, 1996
         Aamer Latif
 
                                Chairman of the Board,
                                  President, Chief
    /s/ JAMES STEENBERGEN         Executive Officer, Chief
- ------------------------------    Financial Officer          October 28, 1996
      James Steenbergen           (Principal Executive
                                  Officer) (Principal
                                  Financial Officer)
 
                                Treasurer, Secretary and
      /s/ TERESITA MEDEL          Corporate Controller
- ------------------------------    (Principal Accounting      October 28, 1996
        Teresita Medel            Officer)
 
    /s/ JAMES STEENBERGEN
- ------------------------------
      James Steenbergen                                      October 28, 1996
       Attorney-in-Fact
</TABLE>
    
 
                                       41


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