SIERRA SEMICONDUCTOR CORP
10-K, 1997-04-14
SEMICONDUCTORS & RELATED DEVICES
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                    FORM 10-K

   X  Annual Report Pursuant to Section 13 or 15(d) of  the Securities  Exchange
  ---  Act of 1934 for the Fiscal Year Ended December 31, 1996

      Transition  Report Pursuant to  Section  13 or  15(b)  of  the  Securities
  ---  Exchange Act of 1934

                         Commission File Number 0-19084

                              SIERRA SEMICONDUCTOR
                                   CORPORATION

             (Exact name of Registrant as specified in its charter)

          CALIFORNIA                                      94-2925073
(State or other jurisdiction                (I.R.S. Employer Identification No.)
     of incorporation)  
                                                                                
                                 2222 QUME DRIVE
                           SAN JOSE, CALIFORNIA 95131
          (Address of principal executive offices, including zip code)

       Registrant's telephone number, including area code: (408) 434-9300
           Securities registered pursuant to Section 12(b) of the Act:
                          Common Stock, no par value

           Securities registered pursuant to Section 12(g)of the Act:
                                      None

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 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  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [ X ]

The  aggregate  market  value of the voting stock held by  nonaffiliates  of the
Registrant, based upon the closing sale price of the Common Stock on January 31,
1997, as reported by the Nasdaq National Market, was approximately $433,768,664.
Shares of Common Stock held by each  executive  officer and director and by each
person who owns 5% or more of the outstanding voting stock have been excluded in
that  such  persons  may be  deemed  to be  affiliates.  This  determination  of
affiliate  status  is not  necessarily  a  conclusive  determination  for  other
purposes.

         As of January 31, 1997, the Registrant had 28,822,282  shares of Common
         Stock outstanding.


                       DOCUMENTS INCORPORATED BY REFERENCE

         Parts of the Proxy  Statement for  Registrant's  1997 Annual Meeting of
         Shareholders  are  incorporated by reference in Items 10, 11, 12 and 13
         Part III of this Form 10-K Report.


================================================================================
<PAGE>

                                     PART I
ITEM 1.  Business.

General

         Sierra Semiconductor  Corporation  ("Sierra" or the "Company") designs,
develops,  markets and supports high-performance  semiconductor system solutions
for  advanced  communications  markets.  The  Company's  products  are  used  in
broadband communications infrastructures, high bandwidth networks and multimedia
personal  computers.  The  Company is a leading  supplier  of ATM and  SONET/SDH
integrated circuits in the communications infrastructure and networking markets,
and also provides these markets with T1/E1 and D3/E3  integrated  circuits.  The
Company  also  supplies  highly   integrated   data  and  voice   communications
semiconductor  products to personal  computer original  equipment  manufacturers
("PC OEM's"),  but is planning to wind-down these product lines, and to focus on
the broadband  infrastructure and networking markets. In August 1996 the Company
announced its decision to exit the personal  computer modem chipset business and
to put the modem chipset product line up for sale.  This action,  which included
the  restructuring  of the Company's  non-networking  operations,  resulted in a
one-time  charge to  earnings  in the  quarter  ended  September  30,  1996,  of
approximately $69 million (see Details of Restructuring in Item 7).

         The Company was  incorporated  in the State of  California  in November
1983 and commenced  business in January 1984.  All references to "Sierra" or the
"Company" include PMC-Sierra, Inc. ("PMC") and the Company's other subsidiaries,
unless the context otherwise requires.  The Company's principal executive office
is located at 2222 Qume Drive, San Jose,  California 95131. The Company's Common
Stock trades on the Nasdaq National Market under the symbol "SERA."

Industry Background

         The  Internet  and its  increased  usage by  business  and  residential
customers  have  put a  strain  on the  telecommunications  infrastructure  that
supports the worldwide network of voice and data  communications.  The broadband
infrastructure,  originally  intended to support the telephone voice network, is
now increasingly used to transmit data communications. With the addition of data
traffic over the  network,  the average  time that a user  currently  spends "on
line"  is  significantly  higher  than the  average  time  that  the  same  user
previously was connected when using voice communications only. Industry analysts
have predicted that this trend of increasing  traffic flow will continue as more
users come "on line" to the  Internet,  as more  services  are  available on the
Internet,  and as more  applications,  especially  video traffic,  become widely
available.  Also,  telecommunications  deregulation  is  occurring in the United
States and abroad.  Telecommunications  companies  are expected to upgrade their
current product  offerings and develop new products to handle increased  volumes
of data  traffic.  Corporations  are also  upgrading  their  networks to enhance
internal  electronic  communication  and provide greater access to external data
traffic. These trends create the following market opportunities:
<PAGE>

         o   In the  broadband or wide-area-network infrastructure market, high-
             performance  semiconductor  solutions  will be needed for  Internet
             Protocol  ("IP"),  Frame  Relay,  and  Asynchronous  Transfer  Mode
             ("ATM") switching and data transmission protocols.

         o   In   the  local-area  network ("LAN")  equipment  market,  Sierra's
             opportunities   include  ATM  LAN  backbone  and  gigabit  ethernet
             products.

         o   The LAN  market  also  offers  a new  product  opportunity  in fast
             ethernet switches at the workgroup level.

         o   In  the  Internet/Intranet infrastructure market, Internet  service
             providers  (ISP's) and other  equipment  suppliers  are expected to
             require a greater  number of  point-of-presence  switches to enable
             more efficient  transmission  of data traffic from the users to and
             through the Internet.

Products

         Sierra provides semiconductor devices, and related service and support,
to equipment  manufacturers which incorporate  Sierra's products into electronic
communications equipment and systems.

         The Company  provides several  semiconductor  devices for ATM products.
The Company's  network  interface chips,  operating at ranges from T1 line rates
(1.5 Megabits per second or Mbps) to OC-3 (622 Mbps)  include  solutions for the
physical  (PHY) layer,  the ATM layer,  and ATM adapters.  The S/UNI chip family
features a range of single-  and multi-  channel  solutions  for  networks,  for
either Local Area Networks (LANs) or Wide Area Networks (WANs). The Company also
provides a line of semiconductor  devices,  known as RCMP chips, which integrate
traffic  policing,  performance  monitoring,  address  resolution,   translation
algorithms, and fault management.

         The Company is also developing physical layer solutions for Synchronous
Optical  Network/Synchronous  Digital Hierarchy  (SONET/SDH) and T1/E1 equipment
manufacturers.  The Company's Stel/ar family of products supports both the SONET
and SDH protocol  standards,  and provides  tributary  and  aggregate  interface
solutions,  tributary processing, and other switching solutions such as add-drop
multiplexers.  For other applications,  like Frame Relay or Internet access, the
Company provides multi-channel digital T1/E1 framers,  single chip multiplexers,
and analog line interface  units under the  Asynchronous/Plesiochronous  Digital
Hierarchy (ASYNC/PDH) family. The T1/E1 line interface units are now produced as
single-channel as well as quad devices.

         The  Company  announced,  in the fourth  quarter of 1996,  an  Ethernet
switch   product   called   EtherDirector,   which   is   an   8-port   10Base-T
switch-on-a-chip   that  is  sold  to  and  incorporated  into  other  equipment
manufacturer's products that provide Ethernet switching to workgroups at the low
end of the LAN.

         Sierra's  products are sold principally to equipment  manufacturers who
in  turn  sell  their  communication  equipment  to  enterprises  and  telephone
installations.  The Company's customers range from large WAN equipment providers
such at Alcatel,  Lucent,  and  Stratacom,  to LAN equipment  providers  such as
Cisco, Fore, Cabletron, and Newbridge, and to remote access equipment providers,
such as Ascend or U.S. Robotics. The above list of customers is not inclusive of
all  Sierra's  customers,  but is  intended  to be  illustrative  of the type of
customers  who buy the  Company's  products.  Sierra's  networking  products are
standard  products,  and no products are custom  designed for any one customer's
products or applications.
<PAGE>

Personal Computer User Interface (Net Access) Products

         Data  and  Voice   Communications.   The   Company's   principal   data
communications  products  are modem  integrated  circuits  operating at industry
standard protocols of up to 33.6 kilobits per second (kbps). These semiconductor
devices  can be used by  manufacturers  to produce  modems  with a wide range of
features, including facsimile,  integrated full duplex speakerphone,  voice mail
and Sound Blaster compatible music synthesis  capabilities.  The Company's modem
products  are PC and  Macintosh  compatible.  The  Company is in the  process of
exiting the modem business and is only selling existing inventory and supporting
previously sold modem products.

         Graphics and  Multimedia  Communications.  The Company  offers  several
graphics  and  video  communications  products,   primarily  to  Apple  Computer
("Apple"). The Company provides Apple Computer with multimedia controllers,  and
a range of phased loop lock  ("PLL"),  frequency  synthesizers,  monochrome  and
color video  digital-to-analog  converter ("DAC")  products.  In 1996, 1995, and
1994,  sales to Apple accounted for 10%, 24%, and 20%,  respectively of Sierra's
net revenues.

Sales, Marketing and Distribution

         Sierra  sells its products  through a direct  sales force,  independent
manufacturers'  representatives and distributors.  International sales were 53%,
39% and 38% of net revenues in 1996, 1995 and 1994, respectively. The increasing
percentage of  international  sales in 1996 over 1995 was principally the result
of modem  products  being  sold to  customers  in the Far East.  For  networking
products, in 1996, North American sales were 75% of networking revenue, compared
to 77% in 1995.  Sales are  generally  denominated  in U.S.  dollars.  See "Risk
Factors--International Operations."

Backlog

         Sales are made  primarily  pursuant  to  standard  short-term  purchase
orders for delivery of standard products. The quantity actually purchased by the
customer,  as well as the shipment schedules,  are frequently revised to reflect
changes in the customer's  needs. As of December 31, 1996, the Company's backlog
was approximately $38.3 million,  compared to approximately $88.3 million at the
end of the 1995  fiscal  year.  The  decline  in  backlog  is due in part to the
Company's  exit from the modem  business,  which  represented  the  majority  of
backlog at the end of fiscal 1995. The Company's  backlog  includes all purchase
orders  expected  to be shipped  within the next twelve  months for  semi-custom
products  and within the next seven  months for other  products.  A  significant
portion of the backlog is cancelable  without  penalty at the  discretion of the
customer.  Accordingly,  the Company believes that its backlog at any given time
is not a meaningful indicator of future revenues.
<PAGE>

Manufacturing

         The Company relies on independent  foundries for the manufacture of its
products.  The Company  currently  receives  substantially  all of its wafers in
finished form from Chartered Semiconductor Ptd. Ltd.  ("Chartered"),  and Taiwan
Semiconductor  Manufacturing  Corporation  ("TSMC").  The supply  agreement with
Chartered   Semiconductor   expires  on  November  17,  1999,  although  certain
provisions have been  superseded by a wafer capacity  agreement which expires in
December 2000 whereby Chartered Semiconductor is obligated to supply the Company
with a predetermined number of wafers per quarter. TSMC is obligated to provide,
and the Company is obligated to purchase certain  quantities of wafers per year.
The  Company's  agreement  with TSMC  terminates  on December  31,  2000.  These
independent   foundries  produce  versions  of  the  Company's   networking  and
communications products at feature sizes down to 0.35 micron.

         The Company has financial arrangements and deposits with certain of its
independent  foundries.  The  Company  deposited  $3  million  in  1995  and  an
additional  $9 million in 1996 with one  foundry  to secure  capacity.  Under an
agreement with another  foundry,  the Company paid $15 million in 1996 to secure
capacity.  These  agreements  were  renegotiated in 1996.  These  agreements now
require  the  Company to purchase a minimum  number of wafers,  scheduled  on an
annual or quarterly basis. Under an agreement with a third foundry,  the Company
committed to provide  approximately  $10 million of equipment to the foundry and
purchased  $3 million of the  foundry's  equity  stock.  If the Company does not
purchase  the  minimum  numbers of  wafers,  the  Company  may lose a portion of
amounts  deposited or paid to secure capacity.  Likewise,  by not purchasing the
minimum   amounts  in  any  period,   the  deposits,   prepayments,   and  other
consideration  would be amortized over a lower number of wafers  purchased,  and
thus the cost per wafer  would be  proportionately  higher in that  period.  See
"Risk Factors--Access to Wafer Fabrication  Capacity;  Dependence on Third Party
Manufacturers."

         Wafers supplied by outside  foundries must meet the Company's  incoming
quality and electrical  test pattern  standards.  The Company  conducts its test
operations on advanced  mixed signal and digital test  equipment in its Burnaby,
British Columbia, Canada, and San Jose, California facilities and certain of its
foundries,  and sends  tested  wafers  to  qualified  subassemblers  in Asia and
Canada.  Tested units  receive  final  quality  assurance  inspection in British
Columbia and in California.  The testing currently done in San Jose,  California
will be discontinued by the end of June 1997 as a result of the restructuring of
the Company's non-networking operations.

Research and Development

         Sierra's current  research and development  efforts focus on increasing
the  functionality and integration of its products.  The Company's  research and
development in the  telecommunications  infrastructure and local area networking
markets  is  targeted  at  increasing  the  speed at which  its  chips  operate,
integrating multiple channels on single devices, and broadening the portfolio of
products which comply with the varying  protocols in these markets.  As a result
of the  Company's  decision  to exit from the modem  chipset  business,  and the
associated restructuring of the Company's non-networking product operations, the
Company has discontinued  research and development on any future modem and other
non-networking  products. The Company expended $29.4 million, $23.4 million, and
$15.7  million  on  research  and  development  in fiscal  1996,  1995 and 1994,
respectively.

         There can be no assurance  that any new products  will be  successfully
developed or will  achieve  market  acceptance.  A failure in any of these areas
would materially and adversely affect the Company's operating results.
See "Risk Factors--Technological Change."
<PAGE>

Competition

         The   semiconductor   industry   is   intensely   competitive   and  is
characterized by rapid technological  change and by price erosion.  The industry
consists of major domestic and international  semiconductor  companies,  many of
which have substantially greater financial and other resources than the Company.
Emerging companies also provide  significant  competition in this segment of the
semiconductor   market.  The  Company  believes  that  its  ability  to  compete
successfully  in this market  depends on a number of factors,  including,  among
others, the price, quality and performance of the Company's and its competitors'
products,  the timing and success of new product  introductions  by the Company,
its  customers  and  its  competitors,  the  emergence  of  new  standards,  the
development   of  technical   innovations,   the  ability  to  obtain   adequate
manufacturing  capacity  and  sources  of  raw  materials,   the  efficiency  of
production,  the rate at which the  Company's  customers  design  the  Company's
products into their products, the number and nature of the Company's competitors
in a  given  market,  the  assertion  of  the  Company's  and  its  competitors'
intellectual property rights and general market and economic conditions.

         The Company's  competitors  include,  among others,  Texas Instruments,
Level  One  Communications,   Lucent  Technologies,  Dallas  Semiconductor,  and
Transwitch.  The number of  competitors  and the  technology  platforms on which
their  products  will compete may change in the future.  To date there have been
several competing  technologies in the telecommunications and networking markets
and not all standards have been established to date. The Company's  success will
depend on the successful development of a market for its customers' products. It
is likely  that over the next few years  additional  competitors  will enter the
market with new products.  These new competitors may have substantially  greater
financial and other resources than the Company.  Competition among manufacturers
of  semiconductors  like the Company's  products  typically occurs at the design
stage, where the customer  evaluates  alternative design approaches that require
integrated  circuits.  Because of shortened  product  life cycles and  design-in
cycles in certain of the Company's customers products, the Company's competitors
have  increasingly  frequent  opportunities  to  achieve  design  wins  in  next
generation systems. Any success by the Company's  competitors in supplanting the
Company's  products  would  have a  material  adverse  effect  on the  Company's
operating results.

         Historically,  average  selling  prices  ("ASPs") in the  semiconductor
industry have decreased over the life of the particular product. The willingness
of  prospective  customers to design the Company's  products into their products
depends to a  significant  extent  upon the  ability of the Company to price its
products at a level that is cost effective for such customers. If the Company is
unable to reduce its costs  sufficiently to offset declines in ASPs or is unable
to introduce new higher  performance  products  with higher ASPs,  the Company's
operating results would be materially and adversely affected. Any yield or other
production   problems,   shortages  of  supply  that   increase  the   Company's
manufacturing  costs,  or failure to reduce  manufacturing  costs,  would have a
material adverse effect on the Company's operating results.
<PAGE>

Licenses, Patents and Trademarks

         The Company has granted Chartered Semiconductor a non-exclusive license
to  manufacture  and sell  integrated  circuits  licensed for sale by Sierra and
integrated  circuits designed by Chartered  Semiconductor or its parent company.
Chartered  Semiconductor also has a worldwide non-exclusive right to manufacture
digital  integrated  circuits  for third  parties,  unless  Sierra  designed the
circuit  or  previously   supplied  the  circuit  to  the  customer.   Chartered
Semiconductor  has also  licensed  its  manufacturing  technology  to Sierra for
non-exclusive use outside  Singapore.  The license agreement expires in November
1999.  Upon  termination  of the  agreement,  the  licenses  to  use  technology
continue, but obligations to update licensed technology terminate.

         The  Company has several  U.S.  patents and a number of pending  patent
applications in the U.S. and European countries.  In addition to such factors as
innovation,  technological  expertise  and  experienced  personnel,  the Company
believes that a strong  patent  position is becoming  increasingly  important to
compete  effectively  in the  industry  and has an  active  program  to  acquire
additional  patent  protection.  The Company applies for mask work protection on
its circuit designs. The Company attempts to protect its software, trade secrets
and other  proprietary  information  by entering  into  proprietary  information
agreements  with  employees and other  security  measures.  Although the Company
intends to protect its rights  vigorously,  there can be no assurance that these
measures will be successful. See "Risk Factors--Patents and Proprietary Rights."

         Sierra Semiconductor and its logo are registered trademarks and service
marks of the Company.  The Company owns other  trademarks  and service marks not
appearing in this Form 10-K Annual Report.  Other  trademarks  used in this Form
10-K Annual Report are owned by other entities.

Employees

         As of December 31, 1996, the Company had 298  employees,  including 122
in research and  development,  44 in engineering  and quality  assurance,  48 in
marketing and sales, 32 in test operations and 52 in corporate and manufacturing
administration.  None of the Company's  employees is represented by a collective
bargaining agreement, nor has the Company ever experienced any work stoppage.

         As of December 31, 1996,  118 employees  employed as of the date of the
restructuring in the Company's modem and  non-networking  operations had reached
their planned termination dates and left the Company. During 1997, 127 employees
employed  as of  the  date  of the  restructuring  in the  Company's  modem  and
non-networking  operations will be terminated under the restructuring  plan. See
"Risk Factors - Dependence on Key Personnel."

RISK FACTORS

         THE COMPANY'S  BUSINESS,  FINANCIAL CONDITION AND RESULTS OF OPERATIONS
ARE SUBJECT TO A NUMBER OF RISKS, SOME OF WHICH ARE DESCRIBED BELOW.

SPECIAL NOTE ON FORWARD-LOOKING STATEMENTS

         Certain  statements and  information  in this Annual Report  constitute
"forward-looking  statements" within the meaning of the federal securities laws.
Such forward-looking  statements involve risks and uncertainties which may cause
the actual results, performance, or achievements of the Company to be materially
different from those  expressed or implied by such  forward-looking  statements.
The  forward-looking  statements include  projections in "Business"  relating to
trends in the broadband infrastructure,  WAN, LAN and Internet/Intranet markets,
products under development for SONET/SDH and T1/E1 applications and research and
development   goals;  and  projections  in  "Risk  Factors"  and   "Management's
Discussion  and  Analysis of  Financial  Condition  and  Results of  Operations"
relating to gross margin, growth of the broadband communications market, results
of  the  Company's  exit  from  the  modem  chip  market,  continued  supply  of
semiconductors  to the  Company by outside  foundries  and by  assembly  houses,
export sales, and future expenditures on research and development and marketing,
general and  administrative  activities.  Actual results could differ from those
projected in any forward-looking statements for the reasons detailed below.
<PAGE>

FLUCTUATIONS IN OPERATING RESULTS

         The Company's  quarterly and annual operating results may vary due to a
number  of  factors,   including,  among  others,  the  timing  of  new  product
introductions,  decreased demand or average selling prices for products,  market
acceptance  of products,  demand for products of the  Company's  customers,  the
introduction  of  products  or   technologies  by  the  Company's   competitors,
competitive  pressure  on product  pricing,  the  Company's  and its  customers'
inventory  levels of the Company's  products  (particularly  discontinued  modem
products),   product   availability  from  outside   foundries,   variations  in
manufacturing  yields for the Company's  products,  expenditures for new product
and  process  development,  the  acquisition  of  wafer  fabrication  and  other
manufacturing   capacity,  and  the  acquisition  of  businesses,   products  or
technologies.  At various  times in the past,  the  Company's  foundry and other
suppliers have  experienced  lower than  anticipated  yields that have adversely
affected production and,  consequently,  the Company's operating results.  There
can be no  assurance  that the  Company's  existing or future  foundry and other
suppliers will not experience irregularities which could have a material adverse
effect on the  Company's  operating  results.  The Company from time to time may
order in advance of anticipated  customer  demand from its suppliers in response
to anticipated  long lead times to obtain  inventory and materials,  which might
result in excess  inventory  levels if expected  orders fail to  materialize  or
other  factors  render the  Company's  product or its  customer's  products less
marketable.  The  Company has limited  ability to forecast  its unit  volumes of
discontinued  modem chipset sales or the prices at which these sales will occur,
particularly in light of recent introductions by competitors of modems operating
at speeds of up to 56 kbps.  The  Company  expects  sales of modem  products  to
decline  over the first two  quarters  of 1997 and to be minimal  after June 30,
1997. The Company's visibility on sales of networking chipsets is limited due to
customer  uncertainty  regarding future demand for end-user  networking products
and  price  competition  in the  market  for ATM  and  fast  Ethernet  switching
chipsets.  Any delay or  cancellation  of  existing  orders,  or any  decline in
projected  future  orders,  by the  Company's  customers  could  have a material
adverse effect on the Company's  operating results.  Margins will vary depending
on product mix. In the near term, as the Company  continues to sell its existing
inventories of modem chipset  products,  the overall gross margin of the Company
may decline  depending  on the  percentage  of modem  chipset  product  revenues
relative  to  total  revenues.   Overall  gross  margin  may  also  be  impacted
unfavorably  due  to  anticipated  erosion  of  modem  pricing  as  the  Company
liquidates  its  existing  inventories.  In the longer  term,  the  Company  may
experience  declining  gross  profits as a  percentage  of total net revenues if
anticipated  decreases in average selling prices of existing networking products
are not offset by commensurate  reductions in product costs, or by an offsetting
increase in gross profit  contribution  from new higher gross margin  networking
products.  The  Company's  operating  results also are affected by the state and
direction of the  electronics  industry and the economy in the United States and
other markets the Company serves. The Company's  operating results could also be
adversely  affected if restructuring  reserves are insufficient for the costs of
liquidating  inventory,  retaining employees and discontinuing  operations.  The
occurrence  of any of the  foregoing  or other  factors  could  have a  material
adverse effect on the Company's  operating results.  Due to these factors,  past
results may not be indicative of future results.
<PAGE>

TECHNOLOGICAL CHANGE

         The markets for the Company's  products are  characterized  by evolving
industry  standards  and rapid  technological  change and product  obsolescence.
Technological  change may be particularly  pronounced in the developing  markets
for  communications  semiconductor  devices  used in  high-speed  networks.  The
Company's future success will be highly dependent upon the timely completion and
introduction of new products at competitive  price and performance  levels.  The
success  of new  products  depends  on a number  of  factors,  including  proper
definition  of such  products,  successful  and  timely  completion  of  product
development and introduction to market, correct judgment with respect to product
demand,  market  acceptance  of  the  Company's  and  its  customers'  products,
fabrication  yields by the  Company's  independent  foundries  and the continued
ability of the Company to offer  innovative new products at competitive  prices.
Many of these  factors are outside the control of the  Company.  There can be no
assurance  that the Company will be able to identify  new product  opportunities
successfully,  develop and bring to market new products,  achieve design wins or
be  able  to  respond  effectively  to  new  technological  changes  or  product
announcements  by others.  A failure in any of these areas would  materially and
adversely affect the Company's operating results.

         The  Company's  current  strategy is focused on  networking  high-speed
interface  chips.  Products  for   telecommunications  and  data  communications
applications  are based on industry  standards  that are  continually  evolving.
Future  transitions  in  customer  preferences  could  quickly  obsolete  Sierra
products.  The Company is developing products for the Asynchronous Transfer Mode
("ATM")  telecommunications and networking market, which is in an early stage of
development.  The emergence and adoption of new industry  standards that compete
with ATM or  maintenance  by the  industry of existing  standards in lieu of new
standards could render the Company's ATM products unmarketable or obsolete.  The
market for ATM equipment has not developed as rapidly as industry observers have
predicted,  and alternative networking technologies such as "fast Ethernet" have
developed to meet consumer requirements.  A substantial portion of the Company's
development efforts are focused on ATM and related products.  A material portion
of the  Company's  revenues and a  substantial  portion of the  Company's  gross
profits  are  derived  from  sales of ATM,  T1/E1,  DS3/E3 and  SONET/SDH  based
products.  Net revenues  derived from sales of ATM, T1/E1,  DS3/E3 and SONET/SDH
based products amounted to 33% of the Company's total net revenues for 1996. The
gross profit derived from those products  amounted to 50% of the Company's total
gross profit for 1996.

         There can be no assurance  that a significant  market for the Company's
current networking  products will emerge or, if it does emerge, that the Company
will be able to  develop  and market  these or other  networking  products  in a
timely and  commercially  viable  manner.  The  adoption or  maintenance  by the
industry of high speed transmission standards other than those which the Company
currently  addresses,  or the inability of the Company to develop and market its
networking-related  products,  would  have  a  material  adverse  effect  on the
Company's operating results.

         Many  of  the  Company's   products  under   development   are  complex
semiconductor   devices  that  require   extensive  design  and  testing  before
prototypes can be  manufactured.  The  integration of a number of functions in a
single  chip  or  in a  chipset  requires  the  use  of  advanced  semiconductor
manufacturing  techniques.  This can  result in chip  redesigns  if the  initial
design  does  not  permit  acceptable   manufacturing   yields.   The  Company's
telecommunications  products are designed for  customers  who in many  instances
have not yet fully defined their hardware  products.  Design delays or redesigns
by these  customers  could in turn delay  completion or require  redesign of the
semiconductor  devices  needed for the final hardware  product.  In this regard,
many of the relevant  standards and  protocols for products  based on high speed
networking technologies have not been widely adopted or ratified by the relevant
standard-setting  bodies. Redesigns or design delays often are required for both
the hardware  manufacturer's products and the Company's chipsets as industry and
customer  standards,  protocols or design  specifications  are  determined.  Any
resulting  delay  in the  production  of the  Company's  products  could  have a
material adverse effect on the Company's operating results.
<PAGE>

         A  subsidiary  of  the  Company   acquired   in-process   research  and
development and developed  technology relating to Ethernet switching  technology
from Bit,  Inc.  The  acquired  technology  is  generally in the early stages of
development.  The Company has redesigned one product acquired from Bit, Inc. and
has announced a customer's  intention to include this integrated  circuit in the
customer's product. Two other products acquired from Bit, Inc. are in the design
phase,  two  more  are  undergoing  product  definition,   and  four  have  been
conceptually  outlined.  The Company will need to expend significant  additional
resources to complete products based on this technology.  Completion of products
based on the acquired  technology  is  primarily  dependent  upon the  Company's
ability  to hire  additional  engineering  staff in the  areas of  software  and
firmware design,  system level  application  development,  product testing,  and
evaluation and characterization. The Company estimates that in order to complete
and bring to market the first products based on the acquired technology, it will
need to expend approximately $3.3 million in 1997, and to acquire  approximately
$1.0 million of additional  capital  equipment in 1997. The Company  anticipates
that  internally  generated  cash  flows  will be the  source of funds for these
expenditures.

         The Company  cannot  assure that these  products will be completed in a
timely  manner  or  at  all,  or  that  if  completed  these  products  will  be
commercially adopted.

COMPETITION

         The   semiconductor   industry   is   intensely   competitive   and  is
characterized by rapid technological  change and by price erosion.  The industry
consists of major domestic and international  semiconductor  companies,  many of
which have substantially greater financial and other resources than the Company.
Emerging companies also provide  significant  competition in this segment of the
semiconductor   market.  The  Company  believes  that  its  ability  to  compete
successfully  in this market  depends on a number of factors,  including,  among
others, the price, quality and performance of the Company's and its competitors'
products,  the timing and success of new product  introductions  by the Company,
its  customers  and  its  competitors,  the  emergence  of  new  standards,  the
development   of  technical   innovations,   the  ability  to  obtain   adequate
manufacturing  capacity  and  sources  of  raw  materials,   the  efficiency  of
production,  the rate at which the  Company's  customers  design  the  Company's
products into their products, the number and nature of the Company's competitors
in a  given  market,  the  assertion  of  the  Company's  and  its  competitors'
intellectual property rights and general market and economic conditions.

         The Company's  competitors  include,  among others,  Texas Instruments,
Level  One  Communications,   Lucent  Technologies,  Dallas  Semiconductor,  and
Transwitch.  The  number  of  competitors  in this  market  and  the  technology
platforms on which their products will compete may change in the future. To date
there have been several  competing  technologies in the  telecommunications  and
networking  markets and not all standards  have been  established  to date.  The
Company's success will depend on the successful  development of a market for its
customers'  products.  It is  likely  that  over the next few  years  additional
competitors  will enter the market with new products.  These new competitors may
have  substantially  greater  financial  and other  resources  than the Company.
Competition among  manufacturers of semiconductors  like the Company's  products
typically occurs at the design stage, where the customer  evaluates  alternative
design approaches that require integrated circuits. Because of shortened product
life cycles and design-in cycles in certain of the Company's customers products,
the Company's  competitors have increasingly  frequent  opportunities to achieve
design wins in next generation systems. Any success by the Company's competitors
in supplanting  the Company's  products would have a material  adverse effect on
the Company's operating results.
<PAGE>

ACCESS TO WAFER FABRICATION AND OTHER MANUFACTURING CAPACITY

         The Company does not own or operate a wafer fabrication  facility,  and
all of its semiconductor  device requirements are supplied by outside foundries.
Substantially  all  of  the  Company's   semiconductor  products  are  currently
manufactured by third party foundry  suppliers.  The Company's foundry suppliers
fabricate products for other companies and produce products of their own design.
The  Company's  reliance on  independent  foundries  involves a number of risks,
including  the  absence  of  adequate   capacity,   the   unavailability  of  or
interruptions in access to certain process technologies and reduced control over
delivery  schedules,  manufacturing  yields and  costs.  In the event that these
foundries  are unable or  unwilling  to continue to  manufacture  the  Company's
products in required  volumes,  the  Company  will have to identify  and qualify
acceptable additional or alternative foundries. This qualification process could
take six months or longer.  No assurance can be given that any such source would
become  available  to the Company or that any such source would be in a position
to satisfy the Company's  production  requirements in a timely basis, if at all.
Any  significant  interruption  in the supply of  semiconductors  to the Company
would result in the allocation of products to customer, which in turn could have
a material adverse effect on the Company's operating results.

         All  of  the   Company's   semiconductor   products  are  assembled  by
sub-assemblers  in  Asia.  Shortages  of raw  materials  or  disruptions  in the
provision of services by the Company's  assembly  houses or other  circumstances
that would  require the Company to seek  additional  or  alternative  sources of
supply or assembly could lead to supply constraints or delays in the delivery of
the Company's  products.  Such  constraints  or delays may result in the loss of
customers or other  adverse  effects on the  Company's  operating  results.  The
Company's  reliance on independent  assembly  houses  involves a number of other
risks, including reduced control over delivery schedules, quality assurances and
costs and the possible  discontinuance of such contractors'  assembly processes.
Any supply or other  problems  resulting  from such risks  would have a material
adverse effect on the Company's operating results.

CUSTOMER CONCENTRATION

         The Company has no long-term  volume purchase  commitments  from any of
its major customers.  In 1995 and 1996 sales to Apple Computer, Inc. represented
24% and 10%,  respectively,  of net revenues of the Company.  In 1996, two modem
and graphics board  manufacturers,  SCI  Manufacturing,  Inc. and Askey Computer
Corporation,  each represented  approximately 11% of the Company's net revenues.
In the future,  sales to these customers are expected to decline, as the Company
shifts its focus  away from  non-networking  products,  and exits from the modem
chipset  business.  Due to the  Company's  exit from the modem  business,  these
customers are not expected to be significant customers in the future.

         The  reduction,  delay  or  cancellation  of  orders  from  one or more
significant  customers  could  materially  and  adversely  affect the  Company's
operating  results.  Due to the  relatively  short  product  life  cycles in the
telecommunications  and data  communications  markets,  the Company's  operating
results  would  be  materially  and  adversely  affected  if one or  more of its
significant  customers  were  to  select  devices  manufactured  by  one  of the
Company's competitors for inclusion in future product generations.  There can be
no assurance that the Company's  current customers will continue to place orders
with the Company,  that orders by existing customers will continue at the levels
of previous  periods or that the Company will be able to obtain  orders from new
customers.  Loss  of one  or  more  of  the  Company's  current  customers  or a
disruption in the Company's sales and distribution channels could materially and
adversely affect the Company's operating results.
<PAGE>

INTERNATIONAL OPERATIONS

         During fiscal years 1996, 1995 and 1994,  international sales accounted
for approximately 53%, 39% and 38% of the Company's net revenues,  respectively.
The Company  expects  that  international  sales will  continue  to  represent a
significant  portion  of its net  revenues  for the  foreseeable  future.  PMC's
operations,  which are  primarily in Canada,  are expected to represent a larger
percentage of the Company's overall operations.  In addition,  substantially all
of the Company's products are manufactured,  assembled and tested by independent
third parties in Singapore,  Taiwan,  Malaysia and the  Philippines.  Due to its
reliance on international sales and foreign third-party manufacturing,  assembly
and  testing  operations,  the  Company is  subject  to the risks of  conducting
business outside of the United States.  These risks include  unexpected  changes
in, or impositions of, legislative or regulatory requirements and policy changes
affecting  the  telecommunications  and  data  communications   markets,  delays
resulting from difficulty in obtaining  export licenses for certain  technology,
tariffs,  quotas,  exchange  rates and other trade  barriers  and  restrictions,
longer payment cycles,  greater  difficulty in accounts  receivable  collection,
potentially  adverse  taxes,  the burdens of complying with a variety of foreign
laws and other factors beyond the Company's control. The Company is also subject
to general  geopolitical risks in connection with its international  operations,
such as political,  social and economic  instability,  potential hostilities and
changes in  diplomatic  and trade  relationships.  Sales in Europe are generally
denominated  in local  currencies,  while  sales in the  rest of the  world  are
generally  denominated in U.S. dollars.  As a result,  the Company is subject to
the risks of currency  fluctuations.  There can be no assurance that one or more
of the  foregoing  factors  will  not  have a  material  adverse  effect  on the
Company's operating results.

DEPENDENCE ON KEY PERSONNEL

         The  Company's  success  depends  to  a  significant  extent  upon  the
continued  services of its key technical  personnel,  particularly  those highly
skilled at the design and test  functions  involved in the  development  of high
speed  networking  products  and  related  software.  The  competition  for such
employees is intense.  The Company has no  employment  agreements  in place with
these key  personnel.  However,  the Company from time to time issues  shares of
Common  Stock or options to  purchase  Common  Stock of the  Company  subject to
vesting.  To the extent shares  purchased from or options granted by the Company
have economic value,  these securities could create  retention  incentives.  The
loss of the services of one or more of these key personnel, and any difficulties
the Company may experience in hiring  qualified  replacements,  would materially
and  adversely  affect  the  Company's  operating  results.  As a result  of the
Company's  decision to exit the modem chipset business and restructure its other
non-networking operations,  certain key administrative and engineering personnel
in  non-networking  operations  may  terminate  their  employment by the Company
earlier  than  planned  by the  Company.  The  Company  cannot  assure  that the
retention incentives which the Company has put in place, which include retention
payments  of up to six  months  salary,  will  be  sufficient  to  retain  these
individuals.  If one or more of these personnel  terminate their employment with
the Company, the operating results of the Company could be adversely affected.

PATENTS AND PROPRIETARY RIGHTS

         The Company's  ability to compete is affected by its ability to protect
its  proprietary  information.  The Company  relies on a combination of patents,
trademarks,  copyrights,  trade  secret  laws,  confidentiality  procedures  and
licensing  arrangements to protect its intellectual property rights. The Company
currently holds several patents in the networking and  non-networking  areas and
has a number of pending  patent  applications.  There can be no  assurance  that
<PAGE>
patents will issue from any of the Company's  pending  applications  or that any
claims  allowed will be of  sufficient  scope or  strength,  or be issued in all
countries  where the  Company's  products  can be sold,  to  provide  meaningful
protection or any commercial advantage to the Company. In addition,  competitors
of the Company may be able to design around the Company's  patents.  The laws of
certain  foreign  countries  in  which  the  Company's  products  are  or may be
developed,  manufactured or sold,  including  various countries in Asia, may not
protect the  Company's  products  or  intellectual  property  rights to the same
extent as do the laws of the  United  States  and thus make the  possibility  of
piracy of the Company's  technology  and products  more likely.  There can be no
assurance  that the  steps  taken by the  Company  to  protect  its  proprietary
information  will be adequate to prevent  misappropriation  of its technology or
that the Company's  competitors will not independently develop technologies that
are substantially equivalent or superior to the Company's technology.

         The semiconductor  industry is characterized by vigorous protection and
pursuit of  intellectual  property  rights or positions,  which have resulted in
significant and often  protracted and expensive  litigation.  The Company or its
customers  or  foundries  have in the  past,  and may  from  time to time in the
future,  be notified of claims  that the  Company may be  infringing  patents or
other intellectual property rights owned by third parties. If it is necessary or
desirable,  the Company may seek licenses under patents or intellectual property
rights.  There can be no assurance  that  licenses will be available or that the
terms of any offered licenses will be acceptable to the Company.  The failure to
obtain a license  from a third party for  technology  used by the Company  could
cause  the  Company  to  incur  substantial   liabilities  and  to  suspend  the
manufacture of products or the use by the Company's foundry suppliers  requiring
the  technology.  In the past,  the  Company's  customers  have been required to
obtain  licenses from and pay royalties to third parties for the sale of systems
incorporating the Company's semiconductor devices. If this occurs in the future,
the customers'  businesses may be materially  and adversely  affected,  which in
turn would have a material  adverse effect on the Company's  operating  results.
Furthermore, the Company may initiate claims or litigation against third parties
for  infringement  of the  Company's  proprietary  rights  or to  establish  the
validity  of the  Company's  proprietary  rights.  Litigation  by or against the
Company  could  result in  significant  expense  to the  Company  and divert the
efforts of the Company's technical and management personnel, whether or not such
litigation results in a favorable determination for the Company. In the event of
an adverse result in any such  litigation,  the Company could be required to pay
substantial damages, cease the manufacture, use and sale of infringing products,
spend significant resources to develop  non-infringing  technology,  discontinue
the use of certain  processes or obtain  licenses to the infringing  technology.
There  can be no  assurance  that  the  Company  would  be  successful  in  such
development or that such licenses would be available on reasonable  terms, or at
all, and any such  development  or license  could  require  expenditures  by the
Company  of  substantial  time  and  other  resources.  Patent  disputes  in the
semiconductor   industry  have  often  been  settled   through   cross-licensing
arrangements.  Because  the  Company  currently  does  not  have  a  substantial
portfolio  of patents,  the Company may not be able to settle an alleged  patent
infringement claim through a cross-licensing  arrangement.  Any successful third
party  claim  against the Company or its  customers  for patent or  intellectual
property  infringement,  would have a material  adverse  effect on the Company's
operating results.

ACQUISITIONS

         The Company's strategy may involve, in part,  acquisitions of products,
technologies or businesses from third parties. Identifying and negotiating these
acquisitions  may divert  substantial  management  time away from the  Company's
operations.  An  acquisition  could absorb  substantial  cash  resources,  could
require the Company to incur or assume debt  obligations,  or could  involve the
issuance  of  additional  equity  securities  of the  Company.  The  issuance of
additional  equity  securities  could  dilute,  and could  represent an interest
senior to the rights of, then outstanding  common stock. An acquisition which is
<PAGE>
accounted  for as a  purchase,  like  the  acquisition  of PMC in  1994  and the
acquisition  of  certain  assets  of  BIT  in  September  1996,   could  involve
significant one-time write-offs,  and could involve the amortization of goodwill
and other intangible assets over a number of years, which would adversely affect
earnings  in those  years.  Any  acquisition  will  require  attention  from the
Company's  management  to  integrate  the  acquired  entity  into the  Company's
operations,  may require the Company to develop  expertise  outside its existing
businesses and may result in departures of management of the acquired entity. An
acquired entity may have unknown  liabilities,  and its business may not achieve
the results anticipated at the time of the acquisition.

FUTURE CAPITAL NEEDS

         The Company must continue to make  significant  investments in research
and  development  as well as capital  equipment and expansion of facilities  for
networking  products.  The Company's future capital  requirements will depend on
many  factors,  including,  among  others,  product  development,  the Company's
ability to sell  existing  modem  chipset  inventories,  investments  in working
capital, and acquisitions of complementary  business,  products or technologies.
To the extent that existing  resources and future  earnings are  insufficient to
fund the Company's  operations,  the Company may need to raise  additional funds
through  public or private debt or equity  financings.  If additional  funds are
raised through the issuance of equity  securities,  the percentage  ownership of
current shareholders will be reduced and such equity securities may have rights,
preferences or privileges senior to those of the holders of the Company's Common
Stock. No assurance can be given that additional  financing will be available or
that, if available, it can be obtained on terms favorable to the Company and its
shareholders.  If adequate funds are not available,  the Company may be required
to delay, limit or eliminate some or all of its proposed operations.

         The Company has  available a line of credit with a bank under which the
Company may borrow up to $10 million. Advances made under the line will be fully
secured by cash deposited by the Company. The agreement expires on July 1, 1997.
The agreement  requires the Company to maintain,  on a quarterly basis,  minimum
cash equal to three times the then current outstanding  principal balance of the
term loan. The agreement  prohibits  dividend  payments without the bank's prior
written  consent  and other major  transactions  except that the Company may (i)
acquire  other  companies,  using up to $1 million in cash,  (ii) enter into off
balance sheet equipment leases, not to exceed $15 million in the aggregate,  and
(iii) issue convertible securities with subordination provisions satisfactory to
the bank.

VOLATILITY OF STOCK PRICE

         Factors such as  announcements  of the  introduction of new products by
the  Company  or  its  competitors,  quarterly  fluctuations  in  the  Company's
financial results or the financial results of other  semiconductor  companies or
of companies in the telecommunications or networking equipment industry, general
conditions in the semiconductor industry and conditions in the financial markets
have  in  the  past  caused  the  price  of  the  Common   Stock  to   fluctuate
substantially,  and may do so in the future.  In addition,  the stock market has
recently  experienced  price and volume  fluctuations,  which have  particularly
affected the market  prices for many high  technology  companies  and which have
often been unrelated to the operating performance of the specific companies.
<PAGE>

ITEM 2.  Properties.

         The Company's executive offices and its non-networking  test, sales and
marketing, and design and engineering operations are located in an approximately
83,000  square foot leased  facility in San Jose,  California.  The  facility is
leased through December 2003. The Company also leases office  facilities for its
non-networking  sales staff in or near Boston,  Dallas and  Philadelphia and for
its  engineering  and design  staff near  Huntsville,  Alabama.  The  Company is
attempting  to  sublease  these  facilities.  Estimated  commitments  for excess
facility  costs  have been  included  in the third  quarter  1996  restructuring
reserve.  To the  extent  accrued  as  part  of  the  restructuring,  all  costs
associated  with these  excess and  redundant  facilities  have been and will be
charged to this restructure reserve.

         PMC's  headquarters  facility,  which  includes  its  test,  sales  and
marketing, and design and engineering operations, is located in an approximately
72,000 square foot leased facility in Burnaby,  British Columbia,  Canada.  This
facility is leased  through  April 2001.  PMC also leases  offices for its sales
staff in Massachusetts,  North Carolina, Texas, California, Ontario (Canada) and
England.  PMC-Sierra (Portland),  Inc. leases an approximately 9,000 square foot
office. This facility is leased through March 1999.

ITEM 3. Legal Proceedings.
         Not applicable.

ITEM 4. Submission of matters to a vote of Security Holders.
         Not applicable.


<PAGE>


                                     PART II

ITEM 5.  Market for Registrant's Common Equity and Related Shareholder Matters.

         Stock Price  Information.  The  Company's  Common  Stock  trades on the
Nasdaq  National  Market under the symbol SERA. The following  table sets forth,
for the periods indicated,  the high and low closing sale prices (adjusted for a
2 for 1 stock split,  effective  October 5, 1995) for the Company's Common Stock
as reported by the Nasdaq National Market:

1995                                                         High        Low


First Quarter.......................................       $14.50     $ 8.06
Second Quarter......................................        16.44      11.94
Third Quarter.......................................        27.38      15.88
Fourth Quarter......................................        24.25      13.19


1996                                                         High        Low


First Quarter.......................................       $24.75     $11.38
Second Quarter......................................        20.88      11.00
Third Quarter.......................................        13.75       8.38
Fourth Quarter......................................        17.50      12.00


         As of January 31, 1997, there were  approximately 513 holders of record
of the Company's Common Stock.

         The  Company has never paid cash  dividends  on its Common  Stock.  The
Company  currently  intends to retain earnings,  if any, for use in its business
and does not anticipate paying any cash dividends in the foreseeable future. The
Company's  current  bank credit  agreement  prohibits  the payment of  dividends
without prior consent of the lender.


<PAGE>
ITEM 6.   Selected Financial Data.
Summary Consolidated Financial Data
(in thousands, except for per share data)
<TABLE>
<CAPTION>
                                                                           Year Ended December 31,* (1)

STATEMENT OF OPERATIONS DATA:                                 1996(2)     1995(3)      1994(4)      1993(5)       1992
                                                             --------    --------     --------     --------     --------

<S>                                                         <C>         <C>           <C>           <C>         <C>     
Net revenues                                                 $188,371    $188,724      $104,764      $83,360     $92,278
Gross profit                                                   93,423      91,614        46,960       37,660      50,158
Research and development                                       29,350      23,428        15,702       15,439      14,570
In process research and development                             7,783         ---        12,748          ---         ---
Marketing, general and administrative                          30,691      30,051        23,683       22,487      22,053
Purchase price adjustment - compensation                          ---      10,624           ---          ---         ---
Restructuring and other charges                                64,670         ---        (1,559)      12,669         ---
                                                             --------    --------     --------     --------    --------
Income (loss) from operations                                (39,071)      27,511       (3,614)     (12,935)      13,535
Income (loss) from continuing operations                     (48,150)      23,976       (7,916)     (12,983)      11,844
Loss from discontinued operations                                ---      (22,497)        (666)         ---          ---
                                                             --------    --------     --------     --------     --------
Net income (loss)                                           $(48,150)      $1,479      $(8,582)    $(12,983)     $11,844
                                                            ========     ========     ========     ========     ========

Per share data:  (6)
Income (loss) from continuing operations                      $(1.62)       $0.84       $(0.36)      $(0.64)       $0.54
Loss from discontinued operations                                ---       $(0.79)      $(0.03)         ---          ---
                                                             --------    --------     --------     --------     -------- 
Net income (loss)                                             $(1.62)       $0.05       $(0.39)      $(0.64)       $0.54
                                                            ========     ========     ========     ========     ======== 
 Shares used in calculation of net income (loss)              29,719       28,620       22,030       20,222       21,738
                                                            ========     ========     ========     ========     ======== 

</TABLE>
<TABLE>
<CAPTION>
                                                                             As of December 31,* (1)
BALANCE SHEET DATA:                                            1996        1995         1994         1993         1992
                                                             --------    --------     --------     --------     -------- 
<S>                                                         <C>         <C>           <C>           <C>         <C>     

Cash, cash equivalents and short-term investments            $42,062      $45,937      $15,830      $21,693      $34,843
Working capital                                               20,438       32,741       23,813       14,803       42,341
Total assets                                                 129,914      184,860       85,959       71,850       89,540
Long term debt (including current portion)                    24,637       12,718        9,069       11,872       14,575
Shareholders' equity                                          48,444       81,000       34,865       40,153       59,714
<FN>
*    The  Company's  fiscal  year ends on the Sunday  closest to December  31. 
     December 31 has been used as the fiscal year end for ease of  presentation.
     See Note 1 to Consolidated Financial Statements.
(1)  Net  revenues,  gross  profit,  research and  development,  and  marketing,
     general and  administrative  expenses have been restated to exclude amounts
     relating  to  Prometheus  Products,  Inc.  For  1995,  amounts  related  to
     Prometheus  previously  reported  within net revenues  were $19.0  million;
     gross  profit  (loss) was  ($0.1)  million;  and net  profits  were  ($4.6)
     million.  For 1994,  net revenues were $3.8 million;  gross profit was $0.3
     million;  and net loss was ($0.7) million.  All previously reported amounts
     have been included in "Loss from  discontinued  operations".  Balance sheet
     data has been restated to exclude amounts relating to Prometheus.
(2)  Results for the year ended December 31, 1996 include a restructuring charge
     of $69.4 million in the third quarter for the Company's exit from the modem
     chipset  business and the associated  restructuring  of its  non-networking
     operations. $4.7 million of this charge was recorded in cost of sales as an
     inventory  write down,  and $64.7  million was recorded as a  restructuring
     cost in operating  expenses.  An in process research and development charge
     of $7.8 million was recorded in the third  quarter for the  acquisition  of
     ethernet  switching  technology and other assets from Bit, Inc.  Results of
     operations   include  costs  of  continuing  the  development  of  ethernet
     switching  products and related activities from the date of the acquisition
     on September 3, 1996.
(3)  Results  for the year  ended  December  31,  1995  include  the  loss  from
     discontinued  operations  related to  Prometheus  Products,  Inc.  of $22.5
     million,  purchase price  adjustment  relating to the  finalization  of the
     acquisition  of  PMC-Sierra,  Inc.  of $10.6  million,  and gain on sale of
     shares of SiTel Sierra B.V. of $6.7 million.
<PAGE>
(4)  Results for the year ended  December 31, 1994 include the operations of PMC
     from the date of  acquisition,  September  2, 1994,  and include in process
     research and  development of $12.7 million,  settlement of the class action
     lawsuit of $2.4  million,  reversal of  restructuring  and other charges of
     $1.6 million and a loss from discontinued  operations of Prometheus of $0.7
     million.
 (5) Results for the year ended  December  31, 1993  include  restructuring  and
     other charges of $15.6  million.  
 (6) Share and  per share information  has been adjusted  for the 2 for 1  stock
     split effective October 5, 1995.
</FN>
</TABLE>
<PAGE>
Quarterly Comparisons

         The following  tables set forth  consolidated  statements of operations
for  each  of the  Company's  last  eight  quarters  and the  percentage  of the
Company's  net  revenues  represented  by  each  line  item  reflected  in  each
consolidated  statement of operations.  This quarterly  information is unaudited
and has been  prepared  on the same basis as the annual  consolidated  financial
statements.  In management's  opinion,  this quarterly  information reflects all
adjustments,  consisting only of normal recurring  adjustments,  necessary for a
fair  presentation of the information for the periods  presented.  The operating
results for any quarter are not necessarily indicative of results for any future
period.
<TABLE>
<CAPTION>
                                                                       Quarterly Data (Unaudited)
                                                                 (in thousands, except per share data)
                                              Year Ended December 31, 1996(1)         Year Ended December 31, 1995 (2) (3)
                                            ------------------------------------      ------------------------------------
                                             Fourth     Third    Second     First    Fourth     Third    Second     First
STATEMENT OF OPERATIONS DATA:
<S>                                         <C>       <C>       <C>       <C>      <C>       <C>      <C>       <C>    
Net revenues                                $36,227   $34,726   $53,022   $64,396   $58,884   $50,700   $42,201   $36,939
Gross profit                                 21,679    13,790    27,665    30,289    27,781    24,907    20,836    18,090
Research and development                      5,979     7,080     7,885     8,406     6,905     5,969     5,182     5,372
In process research and development             ---     7,783       ---       ---       ---       ---       ---       ---
Marketing, general and administrative         5,778     7,406     8,842     8,665     8,602     7,170     7,286     6,993
Purchase price adjustment                       ---       ---       ---       ---       ---    10,624       ---       ---
Restructuring and other charges                 ---    64,670       ---       ---       ---       ---       ---       ---
                                            -------   -------   -------   -------   -------   -------   -------   -------
Income (loss) from operations                 9,922   (73,149)   10,938    13,218    12,274     1,144     8,368     5,725
Income (loss) from continuing                 9,120   (73,294)    7,198     8,826    14,321    (1,221)    6,472     4,404
  operations
Loss from discontinued operations               ---      ---        ---       ---   (19,411)   (2,249)     (533)     (304)
                                            -------   -------   -------   -------   -------   -------   -------   -------
   
Net income (loss)                            $9,120 $(73,294)    $7,198    $8,826   $(5,090)  $(3,470)   $5,939    $4,100
                                            =======   =======   =======   =======   =======   =======   =======   =======

Per share data: (4)
Income (loss) from continuing                 $0.29   $(2.46)     $0.24     $0.29     $0.47    $(0.05)    $0.23     $0.16
  operations  
Loss from discontinued operations               ---       ---       ---       ---    $(0.64)   $(0.08)   $(0.02)   $(0.01)
                                            -------   -------   -------   -------   -------   -------   -------   -------
Net income (loss)                             $0.29   $(2.46)     $0.24     $0.29    $(0.17)   $(0.13)    $0.21     $0.15
                                            =======   =======   =======   =======   =======   =======   =======   =======

Shares used in calculation of net
income/ (loss)                               31,655   29,782     30,578    30,790    30,158    27,230    27,862    27,374
</TABLE>
<TABLE>
<CAPTION>
                                                             As a Percentage of Net Revenues (Unaudited)
                                           Year Ended December 31, 1996(1) (3)   Year Ended December 31, 1995 (2) (3)
                                          ------------------------------------   ------------------------------------
                                            Fourth     Third    Second     First     Fourth     Third   Second     First
      
<S>                                          <C>       <C>       <C>       <C>       <C>       <C>      <C>       <C>    
Net revenues                                  100%      100%      100%      100%       100%      100%     100%      100%
Gross profit                                   60%       40%       52%       47%        47%       49%      49%       49%
Research and development                       17%       20%       15%       13%        12%       12%      12%       15%
In process research and development            ---       22%       ---       ---        ---       ---      ---       ---
Marketing, general and administrative          16%       21%       17%       14%        14%       14%      17%       19%
Purchase price adjustment-compensation         ---       ---       ---       ---        ---       21%      ---       ---
Restructuring and other charges                ---      186%       ---       ---        ---       ---      ---       ---
                                              -----    -----      -----     -----      -----     -----    -----     -----  
Income (loss) from operations                  27%     -211%       21%       21%        21%        2%      20%       15%
Income (loss) from continuing operations       25%     -211%       14%       14%        24%       -2%      15%       12%
Loss from discontinued operations              ---      ---        ---       ---       -33%       -5%      -1%       -1%
                                              -----    -----      -----     -----      -----     -----    -----     -----  
Net income (loss)                              25%     -211%       14%       14%        -9%       -7%      14%       11%
                                             =====     =====     =====     =====      =====     =====    =====     =====
<FN>
(1)  Results for the year ended December 31, 1996 include a restructuring charge
     of $69.4 million in the third quarter for the Company's exit from the modem
     chipset  business and the associated  restructuring  of its  non-networking
     operations. $4.7 million of this charge was recorded in cost of sales as an
     inventory  write down,  and $64.7  million was recorded as a  restructuring
     cost in operating  expenses.  An in process research and development charge
     of $7.8 million was recorded in the third  quarter for the  acquisition  of
     ethernet  switching  technology and other assets from Bit, Inc.  Results of
     operations   include  costs  of  continuing  the  development  of  ethernet
     switching  products and related activities from the date of the acquisition
     on September 3, 1996.
(2)  Results  for the year  ended  December  31,  1995  include  the  loss  from
     discontinued  operations  related to  Prometheus  Products,  Inc.  of $22.5
     million,  the third  quarter  purchase  price  adjustment  relating  to the
     finalization  of the  acquisition of PMC-Sierra,  Inc. of $10.6 million and
     the fourth quarter gain on sale of SiTel Sierra B.V. of $6.7 million.
(3)  Net  revenues,  gross  profits,  research and  development, and  marketing,
     general and  administrative  expenses have been restated to exclude amounts
     relating  to  Prometheus  Products,  Inc.  For  1995,  amounts  related  to
     Prometheus  previously  reported  within net revenues  were $19.0  million;
     gross profit was $(0.1) million;  and net profits were $(4.6) million.  All
     previously  reported amounts have been included in "Loss from  discontinued
     operations".
(4)  Share and  per share information  has been  adjusted  for the 2 for 1 stock
     split effective October 5, 1995.
</FN>
</TABLE>
<PAGE>


ITEM 7.  Management's Discussion and Analysis of Financial Condition and Results
         of Operations.

         Description of Forward-looking  Statements. This portion of this Annual
Report contains forward-looking  statements relating to the future activities of
the modem chipset business (which the Company exited during the third quarter of
fiscal 1996),  modem-related revenues,  gross margins,  expenditures on research
and  development,  and marketing,  general and  administrative  activities,  and
sufficiency of capital resources. Actual results may differ from those projected
in the  forward-looking  statements  for a number of  reasons,  including  those
described in "Risk Factors."

         General. Sierra Semiconductor designs,  develops,  markets and supports
high-performance  system  solutions  for advanced  communications  markets.  The
Company's products are used in broadband  communications  infrastructures,  high
bandwidth networks and multimedia  personal  computers.  In the third quarter of
1996 the Company announced its decision to exit from the personal computer modem
chipset business, and to restructure its non-networking  operations, in order to
focus on the networking and infrastructure semiconductor businesses.  Consistent
with  this  strategy,  the  Company  acquired,  in the third  quarter,  ethernet
switching assets,  intellectual property and certain other assets from Bit, Inc.
In  the  fourth  quarter  of  1995,  the  Company  discontinued   operations  of
Prometheus.  The  consolidated  financial  statements have been  reclassified to
exclude the Prometheus results from continuing operations.

Restructuring
- -------------
         On September 29, 1996, the Company  recorded  charges of $69,370,000 in
connection with the Company's  decision to exit from the modem chipset  business
and  the  associated  restructuring  of  the  Company's  non-networking  product
operations.  The charges were  recorded in cost of sales as an  inventory  write
down ($4,700,000) and as restructure costs in operating expenses  ($64,670,000).
The elements of the total charge as of September  29, 1996 and December 31, 1996
are as follows:
<TABLE>
<CAPTION>

                                                         Restructuring                                    Restructuring
                                                            Charge                                           Reserve
                                                         September 29,     Write-Down         Cash         December 31,
                                                             1996          of Assets         Outlay           1996
(In Millions)                                                ----          ---------        --------          ----
                                                                                            
<S>                                                       <C>            <C>             <C>             <C>
Write down of inventories to net realizable value          $23,000        $(23,000)        $   ---         $   ---
Employee termination benefits                                6,985             ---          (2,411)          4,574
Loss on supplier commitments and write off                                                   
     of prepaid expenses                                     9,908            (905)           (409)          8,594
Write down of excess fixed assets and assets                                                  
    related to capacity commitments                         16,580         (16,580)            ---             ---
Provision for price protection and product returns           5,047          (5,047)            ---             ---
Excess facility costs                                        3,411             ---            (408)          3,003
Write down of goodwill related to Company's BV                                               
      subsidiary in Holland                                  2,459          (2,459)            ---             ---
Severance and closure costs related to Europe                1,980             ---          (1,397)            583
                                                           -------          ------         -------         -------
                                                           $69,370        $(47,991)        $(4,625)        $16,754
                                                          ========        ========        ========        ========
</TABLE>     
<PAGE>      

         The  Company  ceased   manufacturing  its  modem  chipset  products  in
September  1996  and  expects  to  complete  the  shut  down  of  the  remaining
non-networking  operations  in San  Jose by the  middle  of  1997.  No sale  was
anticipated  in accounting for the  restructuring.  The Company will continue to
manufacture  certain of its multimedia  products in order to utilize  components
either on-hand or under firm committed orders. As the non-networking  operations
wind down,  related  work  forces  have been and will  continue  to be  reduced.
Termination  benefits  for  approximately  245  employees  associated  with  the
Company's  non-networking  operations  have  been and will be paid as  employees
reach  their  termination  dates,  between  November  1996 and July 1997.  As of
December 31, 1996, 118 employees employed as of the date of the restructuring in
the Company's non-networking  operations had reached their termination dates and
have left the Company as planned in the restructuring. 127 employees employed as
of the date of the restructuring in the Company's non-networking operations will
reach their termination dates per the restructure plan during 1997.

         As a result of its exit from the modem  chipset  business,  the Company
identified  incremental  impairments in the carrying value of its non-networking
inventory and losses on supplier  commitments arising directly from the decision
to  stop  manufacturing  modem  chipset  inventory.  Additionally,  the  Company
identified  certain prepaid expenses and other commitments that, due to the exit
from the modem  chipset and other  non-networking  operations,  will  provide no
future economic benefit to the Company.

         In  conjunction  with the decision to exit the modem chipset  business,
the Company is subject to incremental  pricing pressure and potential returns of
modem chipset products.  An estimate of the potential impact of price protection
and product returns has been included in the restructuring charge.

         In  connection   with  its  decision  to   discontinue   non-networking
operations,  the  Company  evaluated  the  ongoing  value  of the  fixed  assets
associated  with  these  operations.  Based  on  this  evaluation,  the  Company
identified  approximately $2.1 million of non-networking  property and equipment
that will continue to be utilized in the Company's  networking  operations.  The
remaining  non-networking  property  and  equipment,  with a carrying  amount of
approximately  $11.6  million,   consists  primarily  of  testers,   engineering
workstations,  and computer  equipment.  A small portion of these assets will be
utilized only during the wind down of the non-networking  operations through the
middle of 1997.  The  majority  of these  assets  will not be  utilized  and the
Company is attempting to dispose of such assets. As a result, in accordance with
Financial  Accounting Standard No. 121, the Company determined that these assets
were  impaired  and  wrote  them down by  approximately  $9.7  million  to their
estimated fair market value.  Fair value was based on estimated net  recoverable
salvage  value of assets being held for  disposal.  Based upon net  undiscounted
estimated  cash flows to be generated by these  assets,  no impairment of assets
which will continue to be utilized was identified.

         Prior to the Company's decision to exit from the modem chipset business
and the associated  restructure of its  non-networking  operations,  the Company
entered into  noncancellable  capital  leases for equipment to be used by one of
the Company's outside  foundries in exchange for guaranteed  capacity and future
pricing  considerations.  Due to the Company's  exit and  restructure  plan, the
Company  estimates  that it will not be able to  fully  utilize  the  contracted
capacity  and  pricing  considerations.  The  Company's  analysis  of cash flows
expected from the reduced capacity  utilization at this foundry, while incurring
the full  contracted  capital  leases  obligation,  resulted in an impairment of
approximately $6.9 million of the Company's assets.
<PAGE>

         The portion of the charge related to excess  facility  costs  primarily
consists  of  amounts  to  be  incurred  by  the  Company  under  a  seven  year
noncancelable  operating  lease  expiring in 2003. The Company plans to occupy a
portion of the building  through June 1997. After June 1997, the Company expects
that the building will be vacant.  The Company is actively  trying to sublet the
building;  however,  it is  expected  that a  sublessor  may not be located  for
approximately  eighteen months.  As a result,  the charge consists of the unused
percentage of the lease  obligations  from  September 1996 through June 1997 and
100% of the lease  obligations  for eighteen months  thereafter,  and associated
costs for operating and maintaining the facilities.

         The  Company's  operations  in  Europe  were  closed as a result of the
decision to exit the modem  chipset  business.  Costs related to the shutdown of
the European  subsidiaries,  including  severance payments and excess facilities
costs, are included in the restructuring charge. Additionally, the restructuring
charge includes a write down of the remaining  goodwill related to the Company's
Holland operation.

         Cash expenditures associated with the restructuring accrued liabilities
were  approximately $4.6 million in 1996. It is expected that approximately $5.7
million of cash expenditures  related to the restructuring will occur during the
first half of 1997.  Subsequent cash  expenditures  related  primarily to leases
accrued in the restructuring will be approximately $11.1 million.

Reasons for Restructuring
- -------------------------
         During 1995,  the Company was  experiencing  increasing  demand for its
modem chipset  products,  as shipment volumes were increasing and more customers
were requesting and ordering products for future  deliveries.  As a result,  the
Company  then  increased  the  order  rate and  volume  from its  suppliers  for
products.  Also in 1995,  the industry  was  experiencing  a severe  shortage of
foundry  capacity  to produce  wafers for  semiconductor  devices.  This  caused
companies  like  Sierra  to have to place  order  commitments  with its  foundry
suppliers with much longer lead times, and extending more than several months in
most cases.

         In the first  half of 1996,  there was a  combination  of events  which
changed the entire modem market  environment.  In a very short time period,  the
demand for the modem speed  technology  changed from V.32 chips (14.4Kbps speed)
to V.34  chips  (28.8Kbps),  and the  demand for  slower  speed  modem  products
declined quickly and  dramatically.  However,  the longer lead times required by
the foundries for orders placed earlier in the year and in late 1995 resulted in
products  being  delivered and  accumulating  in the Company's  inventories.  As
foundry capacity,  previously in limited supply,  became more readily available,
customer preferences shifted to higher volume producers of V.34 and faster modem
products.  This  combination  resulted  in  increased  levels  of the  Company's
inventory for both lower speed and higher speed modem products, as the foundries
had more  capacity to produce  product and became  aggressive in trying to build
and ship even more  semiconductor  products  to Sierra and other  modem  chipset
companies.
<PAGE>

         These  factors  combined to create  excess  inventory and a precipitous
decline in prices during the second and third  quarters of 1996. The Company saw
this declining price and excessive  inventory  position as a major change in the
modem  marketplace.  Thus,  in the third  quarter of 1996,  the Company made the
decision to exit the lower margin modem  chipset  market,  and to invest  future
resources in higher margin networking products.

         Concurrent  with  the  Company's  decision  to exit the  modem  chipset
business,  the Company  also  decided to  restructure  its other  non-networking
product  operations in the graphics and custom  areas,  which no longer fit with
the Company's  focus on networking  products.  The Company decided not to expend
funds for research and development on new products outside the networking area.

Impact of Restructuring
- -----------------------
         The Company's  decisions to exit from the modem chipset business and to
restructure its  non-networking  product  operations are expected to result in a
decline of revenues derived from modem,  graphic and custom integrated circuits.
In 1996,  modem,  graphic and custom  integrated  circuit  revenues  were $125.6
million,  approximately  16% lower than revenues in 1995.  In 1997,  the Company
expects  these  revenues to decline  significantly,  although  revenues in these
product  areas may vary  significantly  from  quarter to quarter as the  Company
sells off its modem  chipset  inventory.  Research  and  development,  sales and
marketing   and   general   and   administrative   expenses   related  to  these
non-networking  product  operations in 1996 were $37.2 million,  down from $40.7
million in 1995. The Company expects these expenses to decline  significantly in
1997  due  to  reduced  headcount  and  the  elimination  of  new  research  and
development efforts in the non-networking business. Revenues from sales of modem
chipset  products  will continue to be reported  until the Company  disposes its
existing inventory, which the Company expects to occur during 1997.

Acquisition of Ethernet Switching Assets
- ----------------------------------------
         Consistent  with the Company's  strategy to focus on the networking and
infrastructure   semiconductor  business,  in  the  third  quarter  of  1996,  a
subsidiary of the Company acquired the ethernet  switching assets,  intellectual
property  and certain  other  assets from Bit,  Incorporated,  a privately  held
company in Beaverton, Oregon. These assets were acquired in exchange for 804,407
shares of the  Company's  common stock and other  consideration.  The  aggregate
value  of  this  transaction  was  approximately   $8,107,000,   which  includes
acquisition costs incurred by the Company.  The acquisition was accounted for as
a  purchase  transaction,  with  a  charge  in the  quarter  of  $7,783,000  for
in-process research and development. Approximately $324,000 of technology assets
were capitalized, and will be amortized over seven years.

Results of Operations

Net Revenues
- ------------
                               1996     Change     1995      Change    1994
                               ----     ------     ----      ------    ----
Net revenues ($000,000)
   Networking products         $62.8       60%     $39.2      390%      $8.0
   User interface - other      $66.6      (28%)    $92.8       10%     $84.1
   User interface - modem      $59.0        4%     $56.7      365%     $12.7
                               -----     -----     -----     -----     -----
   Total net revenues         $188.4       ---    $188.7       80%    $104.8
<PAGE>

         Net revenues in 1996 remained  approximately  at the same level as 1995
revenues.  Substantial  growth  in sales  of  networking  products,  and a small
increase in modem chipset  product sales,  were offset by declines in other user
interface product sales, which were primarily due to lower sales of graphic chip
products.  The small  increase in 1996 modem  chipset  sales  increase over 1995
resulted from  increased  unit sales of both V.34 and V.32 modem products in the
first  half of the  year,  while in the  second  half of the  year  the  Company
experienced  declining  unit  sales and  substantially  lower  prices  for modem
products.   The  change  in  net  revenues  in  1995  from  1994  was  primarily
attributable to increased sales of networking and modem products. Sales of modem
products are expected to decline during the first two quarters of 1997 and to be
minimal in the second half of 1997. The Company anticipates a decline in average
selling prices for these  discontinued  products and cannot predict the level of
unit  sales.  As a  result,  revenues  for 1997 are  expected  to be lower  than
revenues in 1996.
<TABLE>
<CAPTION>

Gross Profit
- ------------
                                                         1996      Change     1995     Change     1994
                                                         ----      ------     ----     ------     ----

Gross profit ($000,000)
<S>                                                     <C>        <C>       <C>        <C>        <C> 
   Networking products                                   $46.4       58%      $29.3       432%      $5.5
   Percentage of net networking revenues                   74%                  75%                  69%

   User interface products                               $47.0      (25%)     $62.3        50%     $41.5
   Percentage of net user interface revenues               37%                  42%                  43%

   User interface products excluding valuation
      reserve for modem chipset inventory                $51.7      (17%)     $62.3        50%     $41.5
   Percentage of net user interface revenues               41%                  42%                  43%

   Total gross profit                                    $93.4        2%      $91.6        95%     $47.0
   Percentage of net revenues                              50%                  49%                  45%

   Total gross profit excluding valuation
      reserve for modem chipset inventory                $98.1        7%      $91.6        95%     $47.0
   Percentage of net revenues                              52%                  49%                  45%
</TABLE>

         Total gross profit increased from 1995 to 1996 as a result of increased
sales of higher gross margin  networking  products as a percentage  of total net
revenues. Gross profit as a percentage of net revenues also increased due to the
increased  proportion of sales of higher gross margin networking  products.  The
gross profit  increase from 1994 to 1995 was primarily due to increased sales in
all product lines.  Gross profit as a percentage of net revenues  increased from
1994 to 1995  as a  result  of  increased  sales  of  higher  margin  networking
products.  In the near  term,  as the  Company  continues  to sell its  existing
inventories of modem chipset  products,  the overall gross margin of the Company
may decline  depending  on the  percentage  of modem  chipset  product  revenues
relative  to  total  revenues.   Overall  gross  margin  may  also  be  impacted
unfavorably  due  to  anticipated  erosion  of  modem  pricing  as  the  Company
liquidates  its  existing  inventories.  In the longer  term,  the  Company  may
experience  declining  gross  profits as a  percentage  of total net revenues if
anticipated  decreases in average selling prices of existing networking products
are not offset by commensurate  reductions in product costs, or by an offsetting
increase in gross profit  contribution  from new higher gross margin  networking
products.
<PAGE>
<TABLE>
<CAPTION>

Operating Expenses and Charges ($000,000)
- -----------------------------------------
                                                         1996    Change     1995     Change     1994
                                                         ----    ------     ----     ------     ----

<S>                                                     <C>        <C>    <C>          <C>    <C>  
Research and development                                $29.4       26%    $23.4        49%    $15.7
Percentage of net revenues                                16%                12%                 15%

In-process research & development                        $7.8       ---      ---        ---    $12.7
Percentage of net revenues                                 4%                ---                 12%

Marketing, general & administrative                     $30.7        2%    $30.1        27%    $23.7
Percentage of net revenues                                16%                16%                 23%

Purchase price adjustment-compensation                    ---       ---    $10.6        ---      ---
Percentage of net revenues                                                    6%                 ---

Restructure costs                                       $64.7       ---      ---        ---    $(1.6)
Percentage of net revenues                                34%                ---                 (1%)

</TABLE>

         Research and Development.  Research and development  expenses increased
in 1996 primarily due to greater research and development efforts for networking
products.  As a percentage of net revenues,  research and  development  expenses
increased  as the rate of  spending  growth  exceeded  the rate of net  revenues
growth.  During 1995  research  and  development  expenses  increased  from 1994
primarily due to increased investment in networking products. As a percentage of
net revenues,  research and development  expenses  declined in 1995 from 1994 as
the rate of  growth  of  sales  exceeded  the rate of  growth  of  research  and
development  spending.  In the near  term,  the  Company  expects  research  and
development  spending to decline in absolute  dollars,  due to the  reduction in
user interface  research and development as associated  headcount is reduced due
to the restructuring,  offset partially by increases in research and development
spending on networking products.

         In-Process   Research   and   Development.   In-process   research  and
development  charges  incurred  in 1996 are a result of the  acquisition  of the
ethernet  switching and other assets from Bit, Inc. The in-process  research and
development  charge in 1994  relates  to the  acquisition  of PMC (see Note 2 to
Consolidated Financial Statements).

         Marketing,  General, and Administrative.  In 1996, marketing,  general,
and administrative  expenses remained at the same levels as 1995 as increases in
these expenses in networking  products  primarily related to increased  staffing
were offset by declines in these expenses and headcount of user interface groups
due to the  restructuring.  As a percentage  of net revenues,  total  marketing,
general and  administrative  expenses  remained at approximately the same level.
<PAGE>
The increase in marketing,  general and administrative expenses in 1995 relative
to 1994 was primarily due to support of networking products.  As a percentage of
net revenues,  marketing, general and administrative expenses declined from 1994
to 1995,  as the rate of increase in spending  was less than the rate of revenue
growth.  In  the  near  term,  the  Company  expects   marketing,   general  and
administrative spending to decline in absolute dollars, due to reduced personnel
performing  these  functions for user interface  products,  although the Company
does not  expect to  increase  spending  in these  areas to  support  networking
products.

         PMC Purchase Price Adjustment. In completing the PMC acquisition in the
third quarter of 1995, the Company  recorded a $10.6 million charge  relating to
the compensation  expense  associated with the purchase price adjustment  shares
reserved  for  issuance to the  employees/shareholders  of PMC. The $9.1 million
balance  of the  acquisition  cost  was  allocated  to  goodwill.  See Note 2 to
Consolidated Financial Statements.

         Restructuring.  1996 restructure  costs are part of the charge of $69.4
million  recorded in  connection  with the  Company's  decision to exit from the
modem  chipset  business  and  the  associated  restructuring  of the  Company's
non-networking  product  operations.  The 1994  restructure  credit reflects the
reversal of the  remainder of a restructure  charge  deemed no longer  necessary
from the 1993 restructuring of the Company's operations in Holland and the U.S.

Interest Income (Expense), Net ($000,000)
                                   1996     Change     1995      Change    1994
                                   ----     ------     ----      ------    ----

Interest income (expense), net    $0.7         37%     $0.5        227%   $(0.4)
Percentage of net revenues         0.4%                 0.3%

         Interest  Income.  Interest  income  increased  in 1996 and 1995 due to
higher cash balances available to invest and earn interest.  Interest expense in
1996 increased from 1995 due to short term borrowing. Interest expense currently
relates  primarily  to the  Company's  financing  arrangements  for leases,  and
financing of previously  established  foundry  commitments.  Interest expense in
1995 declined from 1994 as 1994 interest  expense related  primarily to interest
expense on notes issued in 1987 and repaid in 1994.  The 1994  interest  expense
was offset partially by interest earned on the Company's cash balances (see Note
1 of Notes to Consolidated Financial Statements).

         Gain on sale of SiTel Sierra.  During the fourth  quarter of 1995,  the
Company  sold its  interest in  SiTel-Sierra,  B.V.  to  National  Semiconductor
Corporation  for $7.0 million in cash.  This  transaction  resulted in a pre-tax
gain of $6.7 million.  The Company acquired its shares of SiTel-Sierra,  B.V., a
joint venture with TriTech  Microelectronics Pte. Ltd. of Singapore,  in 1994 in
exchange for the  contribution of a license to certain  technology  owned by the
Company and certain assets of Sierra Semiconductor B.V.

         Provision for Income Taxes. The 1996 income tax provision  reflects the
effect of a  nondeductible  $7.8 million  charge for the purchase of  in-process
research and  development  relating to the Bit,  Inc.  acquisition  and taxes on
foreign  operations.  The U.S.  taxes  are  reduced  by the  utilization  of net
operating loss and tax credit carryforwards. The recorded modem chipset business
restructure  charge of $69.4 million did not result in a tax benefit  because of
the  uncertainty  of future U.S.  income as required by  Statement  of Financial
Accounting  Standards No. 109. The 1995 income tax provision reflects the effect
of a nondeductible  $10.6 million charge for the PMC purchase price  adjustment.
The 1994  income tax  provision  reflects  the effect of a  nondeductible  $12.7
million charge for purchase of in-process  research and development and taxes on
foreign operations.
<PAGE>

         Discontinued Operations. During the fourth quarter of 1995, the Company
and its Board of Directors reached a decision to offer Prometheus Products, Inc.
for sale and, as a result,  it has been reported as a discontinued  operation in
the Company's  consolidated  financial statements.  The Company recorded a $17.9
million  discontinued  operations  charge to write  down the  assets  and accrue
additional  liabilities  including a provision for future losses from operations
expected to be incurred during the sales process. The Company contracted with an
investment  banking  firm in the first  quarter  of 1996 to engage in efforts to
sell  Prometheus.  The effort to sell  Prometheus has not resulted in a sale and
the  Company  has  subsequently  completed  the  closure of most  operations  of
Prometheus,  except for the  hardware and software  technical  support  function
which  provides  product  warranty  support for the  installed  base of products
previously  sold. All liabilities  and operating  results of Prometheus for 1996
have been recorded against the discontinued  operations provision established in
the fourth quarter of 1995.

         Liquidity  and  Capital   Resources.   The  Company's   cash  and  cash
equivalents and short term investments  decreased from $45.9 million at December
31, 1995 to $42.1  million at December  31,  1996.  During 1996 the Company made
payments of  approximately  $19.6  million to reduce debt and for capital  lease
obligations  (primarily  related to  foundry  agreements  for future  production
capacity),  $4.0 million for the purchase of fixed assets,  and $3.2 million for
equity investments in other companies.  These uses of cash were partially offset
by cash sources of approximately  $19.6 million  from operating  activities  and
$3.1 million from the issuance of common stock  (principally under the Company's
stock option and purchase plans). The uses of cash for operating activities were
a net loss of  $48.2  million,  an  increase  in  inventory  purchased  of $17.4
million,  a  reduction  in  accounts  payable of $15.1  million,  an increase in
deposits  for  wafer  capacity  of $9.0  million,  $4.6  million  net  change in
restructure  liabilities  (third quarter 1996  restructure),  and a $2.5 million
change in net liabilities of discontinued operations  (Prometheus).  The primary
offsetting sources of cash from operating activities were a non cash restructure
charge of $69.4 million (for the Company's exit from the modem chipset  business
and the associated restructuring of its non-networking  operations),  a decrease
of $20.0  million in accounts  receivable  balances,  $10.9  million of non cash
depreciation  expense, a non cash in-process  research and development charge of
$7.8  million  (for the  acquisition  of  technology  and other assets from Bit,
Inc.),  and the receipt of proceeds of $7.0 million in the first quarter of 1996
from the sale of SiTel-Sierra B.V. in the fourth quarter of 1995.

         As of December  31,  1996,  the Company had  available a line of credit
with a bank under which the Company may borrow up to $10 million  with  interest
at the bank's  prime rate (6.9% at December  31,  1996).  At December  31, 1996,
there were no amounts  outstanding  under the line of credit.  At  December  31,
1995, a $2.0 million standby letter of credit was outstanding  under the line of
credit.  In the fourth quarter of 1996, as a result of the  restructure  charge,
the Company's line of credit  agreement with the bank was  renegotiated to allow
the Company to borrow up to $10 million under the line of credit,  provided that
each  borrowing is fully cash  secured.  The  agreement  requires the Company to
maintain,  on a  quarterly  basis,  minimum  cash equal to three  times the then
current outstanding  principal balance of the term loan. The agreement prohibits
dividend payments  without  the bank's  prior  written  consent  and other major
transactions except that the Company may (i) acquire other companies using up to
$1 million in cash, (ii) enter into off balance sheet equipment  leases,  not to
exceed $15 million in the aggregate, and (iii) issue convertible securities with
subordination provisions satisfactory to the bank. The agreement expires on July
1, 1997. As of December 31, 1996 and 1995,  the Company was in  compliance  with
all of its covenants.
<PAGE>

         The Company believes that existing sources of liquidity and anticipated
funds from operations will satisfy the Company's  projected  working capital and
capital expenditure  requirements  through the end of 1997. The Company's future
capital requirements will depend on many factors,  including,  among others, the
extent to which the Company pursues  additional wafer fabrication  capacity from
existing  foundry  suppliers  or  new  suppliers,   product   development,   and
acquisitions of complimentary businesses, products or technologies. From time to
time the  Company  may  explore  strategic  investment  opportunities  which may
require   funds  in  excess  of  currently   available   sources  of  liquidity.
Accordingly,  the  Company  may choose to raise  needed  funds from debt  and/or
equity financings.

ITEM 8.   Financial Statements and Supplementary Data.

         The chart entitled  "Quarterly  Data  (Unaudited)"  contained in Item 6
Part II hereof is hereby  incorporated  by reference into this Item 8 of Part II
of this Form 10-K.
<PAGE>

<TABLE>
<CAPTION>

                                            SIERRA SEMICONDUCTOR CORPORATION

                                       INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
                                            AND FINANCIAL STATEMENT SCHEDULES


Consolidated Financial Statements Included in Item 8:
                                                                                                                     Page

<S>                                                                                                                  <C>
Report of Ernst & Young LLP, Independent Auditors............................................................          28
Consolidated Balance Sheet at December 31, 1996 and 1995.....................................................          29
Consolidated Statement of Operations for each of the three years in the period                                         30
    ended December 31, 1996..................................................................................
Consolidated Statement of Shareholders' Equity for each of the three years in                                          31
    the period ended December 31, 1996.......................................................................
Consolidated Statement of Cash Flows for each of the three years in the period                                         32
    ended December 31, 1996..................................................................................
Notes to Consolidated Financial Statements...................................................................          34



Schedules  for each of the three  years in the period  ended  December  31, 1996
  included in Item 14 (d):

II  Valuation and Qualifying Accounts........................................................................         S-1
</TABLE>

Schedules not listed bove have been omitted  because they are not  applicable or
are not required or the information required to be set forth therein is included
in the financial statements or the notes thereto.
<PAGE>


                Report of Ernst & Young LLP, Independent Auditors

The Board of Directors and Shareholders
Sierra Semiconductor Corporation


We  have  audited  the  accompanying   consolidated  balance  sheets  of  Sierra
Semiconductor  Corporation  as of December  31,  1996 and 1995,  and the related
consolidated  statements of operations,  shareholders' equity and cash flows for
each of the three years in the period ended  December 31, 1996.  Our audits also
included  the  financial statement schedule  listed in  the index at Item 14(a).
These financial  statements and schedule are the responsibility of the Company's
management.  Our  responsibility  is to express  an  opinion on these  financial
statements and schedule 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  consolidated   financial   position  of  Sierra
Semiconductor  Corporation at December 31, 1996 and 1995,  and the  consolidated
results of its  operations and its cash flows for each of the three years in the
period ended December 31, 1996, in conformity with generally accepted accounting
principles. Also, in our opinion, the related financial statement schedule, when
considered  in  relation  to the basic  financial  statements  taken as a whole,
presents fairly in all material respects the information set forth therein.





San Jose, California                                           ERNST & YOUNG LLP
January 22, 1997

<PAGE>
<TABLE>
<CAPTION>


                                            Sierra Semiconductor Corporation
                                               Consolidated Balance Sheet
                                                     (in thousands)

                                                                                                     December 31,
                                                                                                   1996          1995
                                                                                                   ----          ----
<S>                                                                                           <C>          <C>
ASSETS:
Current assets:
    Cash and cash equivalents                                                                   $35,038       $41,933
    Short-term investments                                                                        7,024         4,004
    Accounts  receivable,  net of allowance  for  doubtful  accounts of $842 and
       $1,081 in 1996 and 1995, respectively (including $3,662
       and $8,827 due from related parties in 1996 and 1995, respectively, see Note 9)           13,907        39,320
    Inventories                                                                                   9,232        14,843
    Prepaid expenses and other current assets                                                     3,104         9,813
                                                                                                  -----         -----
          Total current assets                                                                   68,305       109,913

Property and equipment, net                                                                      16,678        22,704
Goodwill and other intangible assets, net of accumulated
    amortization of $2,305 ($1,499 in 1995)                                                      10,188        13,856
Investments and other assets                                                                      7,623         5,147
Deposits for wafer fabrication capacity                                                          27,120        33,240
                                                                                                 ------        ------
                                                                                               $129,914      $184,860
                                                                                               ========      ========

LIABILITIES AND SHAREHOLDERS' EQUITY:
Current liabilities:
    Accounts payable                                                                             $9,648       $22,866
    Accrued liabilities                                                                           9,546         8,494
    Accrued income taxes                                                                          4,050         7,737
    Accrued restructure costs                                                                    16,754           ---
    Short-term debt and current portion of obligations under capital leases and                   6,269        33,979
      long term debt
    Net current liabilities of discontinued operations                                            1,600         4,096
                                                                                                  -----         -----
          Total current liabilities                                                              47,867        77,172

Deferred income taxes                                                                             2,741         2,179
Noncurrent obligations under capital leases and long-term debt                                   18,368         8,979
Commitments and contingencies
Special shares of PMC convertible into Sierra common stock
    1,937 shares in 1996 (2,573 shares in 1995)                                                  12,494        15,530
Shareholders' equity:
    Preferred stock, no par value; 5,000 shares authorized, none outstanding                        ---           ---
    Convertible preferred stock, no par value; 500 shares authorized,
       none outstanding                                                                             ---           ---

    Common stock, no par value; 50,000 shares authorized; 28,647
       issued and outstanding in 1996 (26,603 in 1995)                                          135,320       119,758
    Accumulated deficit                                                                         (86,876)      (38,726)
                                                                                                 ------        ------
                                                                                                 48,444        81,032
    Less shareholders' notes receivable                                                             ---           (32)
                                                                                                 ------        ------
          Total shareholders' equity                                                             48,444        81,000
                                                                                                 ------        ------
                                                                                               $129,914      $184,860
                                                                                               ========      ========
</TABLE>
See accompanying notes.
<PAGE>
<TABLE>
<CAPTION>
                                            Sierra Semiconductor Corporation
                                          Consolidated Statement of Operations
                                      (in thousands, except for per share amounts)

                                                                                  Three Years Ended December 31,
                                                                                 1996              1995              1994
                                                                                 ----              ----              ----


<S>         <C>                                                              <C>               <C>               <C>     
Net revenues(1)                                                              $188,371          $188,724          $104,764
    
Costs and expenses:
    Cost of revenues                                                           94,948            97,110            57,804
    Research and development                                                   29,350            23,428            15,702
    In process research and development                                         7,783               ---            12,748
    Marketing, general and administrative                                      30,691            30,051            23,683
    Purchase price adjustment - compensation                                      ---            10,624               ---
    Restructuring and other charges                                            64,670               ---            (1,559)
                                                                              -------           -------           -------
Income (loss) from operations                                                 (39,071)           27,511            (3,614)

Interest income (expense), net                                                   679                497              (390)
Gain on sale of SiTel Sierra                                                     ---              6,700               ---
Class action lawsuit settlement                                                  ---                ---            (2,400)
                                                                             -------            -------           -------

Income (loss) before provision for income taxes                              (38,392)            34,708            (6,404)

Provision for income taxes                                                     9,758             10,732             1,512
                                                                             -------            -------           -------
Net income (loss) from continuing operations                                 (48,150)            23,976            (7,916)


Loss from discontinued operations                                                ---             (4,591)             (666)
Loss on disposal of discontinued operations (including provision of
   $1,200 for operating losses during the phase-out period)                      ---            (17,906)              ---
                                                                             -------            -------           -------
Loss from discontinued operations                                                ---            (22,497)             (666)
                                                                             -------            -------           -------

Net income (loss)                                                          $(48,150)             $1,479           $(8,582)
                                                                           ========            ========          ========


Income (loss) from continuing operations per share                           $(1.62)            $  0.84            $(0.36)
Loss from discontinued operations per share                               $     ---              $(0.79)           $(0.03)
                                                                             -------            -------           -------
Net income (loss) per share                                                  $(1.62)            $  0.05            $(0.39)
                                                                           ========            ========          ========


Shares used in calculation of net income (loss) per share                    29,719              28,620            22,030
                                                                           ========            ========          ========

(1)  Including $25,520, $46,074 and $20,622 from related parties in 1996, 1995 and 1994, respectively. See Note 9.
</TABLE>
See accompanying notes.
<PAGE>
<TABLE>
<CAPTION>


                                              Sierra Semiconductor Corporation
                                       Consolidated Statement of Shareholders' Equity
                                                    (in thousands)

                                          Convertible                                       Shareholders'         Total
                                        Preferred Stock     Common Stock      Accumulated      Notes          Shareholders'
                                        Shares   Amount   Shares    Amount      Deficit      Receivable          Equity

<S>                  <C> <C>            <C>    <C>       <C>       <C>         <C>            <C>               <C>    
Balances at December 31, 1993             94    $ 1,856   19,731    $70,102     $(31,606)      $  (199)          $40,153

Conversion of convertible preferred
  stock into common shares               (83)    (1,638)     171     1,638
Issuance of common shares under 
  stock benefit plans                                      1,011     3,004                                         3,004
Amortization of common stock grant                                     153                                           153
Accretion of redeemable convertible
  preferred stock                                    16                              (16)
Payment of shareholders' notes
  receivable                                                                                       137               137
Net loss                                                                          (8,582)                         (8,582)
                                      ------     ------   ------    ------        ------        ------            ------


Balances at December 31, 1994             11        234   20,913    74,897       (40,204)          (62)           34,865

Conversion of convertible preferred
  stock into common shares               (11)      (235)      25       235
Issuance of common shares under  
   stock benefit plans                                       793     3,520                                         3,520
Accretion of redeemable convertible
  preferred stock                                     1                               (1)
Sale of common shares, net of
  issuance costs of $1,484                                 1,150    19,216                                        19,216
Conversion of special shares into
  common shares                                            3,722    19,906                                        19,906
Tax benefit of stock option
  transactions                                                       1,984                                         1,984
Payment of shareholders' notes
  receivable                                                                                        30                30
Net income                                                                         1,479                           1,479
                                      ------     ------   ------    ------        ------        ------            ------

Balances at December 31, 1995                             26,603   119,758       (38,726)          (32)           81,000

Issuance of common shares under
  stock benefit plans                                        604     3,072                                         3,072
Issuance of common stock to
  capitalize PMC-Portland and
  acquire assets of Bit                                      804     6,788                                         6,788
Adjustment to prior year common
   stock issuance costs                                                 38                                            38
Conversion of special shares into
  common shares                                              636     3,036                                         3,036
Tax benefit of stock option
   transactions                                                      2,628                                         2,628
Payment of shareholders' notes
   receivable                                                                                       32                32
Net loss                                                                         (48,150)                        (48,150)
                                      ------     ------   ------    ------        ------        ------            ------


Balances at December 31, 1996                  $          28,647  $135,320      $(86,876)       $  ---           $48,444
                                     =======    =======  =======   =======       =======       =======           =======
</TABLE>

See accompanying notes.
<PAGE>
<TABLE>
<CAPTION>
                                            Sierra Semiconductor Corporation
                                          Consolidated Statement of Cash Flows
                                    Increase (decrease) in cash and cash equivalents
                                                     (in thousands)

                                                                                        Three Years Ended December 31,
                                                                                          1996       1995        1994
                                                                                          ----       ----        ----

Cash flows from operating activities:
<S>                                                                                 <C>           <C>       <C>      
    Net income (loss)                                                                $(48,150)     $1,479     $(8,582)
    Adjustments to reconcile net income (loss) to net cash provided by
    (used in) operating activities:
       Depreciation and amortization                                                    10,922      8,888       6,493
       Acquisition of in process technology and development from purchase of net         7,783        ---         ---
         assets of Bit
       Compensation expense from purchase price adjustment of PMC-Sierra                   ---     10,624         ---
         acquisition
       Loss on discontinued operations of Prometheus Products, Inc.                        ---     17,906         ---
       Acquisition of in process technology and development from purchase of               
         PMC-Sierra                                                                        ---        ---      12,748
         Loss related to restructure reserve:
          Accounts receivable                                                            5,047        ---         ---
          Inventory                                                                     23,000        ---         ---
          Prepaid expenses                                                               1,061        ---         ---
          Impairment of long-lived assets                                               16,425        ---         ---
          Impairment of goodwill of Holland operations                                   2,459        ---         ---
          Accruals for restructure related costs:
             Severance and related costs                                                 6,985        ---         ---
             Purchase commitments and other accruals                                     9,002        ---         ---
             Excess facilities costs                                                     3,411        ---         ---
             Costs for closure of European subsidiaries                                  1,980        ---         ---
    Changes in assets and liabilities
       Accounts receivable                                                              20,023    (16,855)    (12,511)
       Inventories                                                                     (17,389)    (3,772)       (677)
       Prepaid expenses and other                                                         (711)   (11,390)      6,757
       Accounts payable and accrued expenses                                           (15,109)    17,801       1,300
       Accrued restructuring costs                                                      (4,624)       ---         ---
       Net assets/liabilities associated with discontinued operations                   (2,496)    (4,733)     (9,077)
                                                                                       -------    -------     -------
           Net cash provided by (used in) operating activities                          19,619     19,948      (3,549)

Cash flows from investing activities:
    Proceeds from sales/maturities of short-term investments                            15,984      3,188      10,910
    Purchases of short-term investments                                                (19,004)    (3,984)         ---
    Investments in other companies                                                      (3,162)    (1,430)     (2,500)
    Decrease in investments and other                                                      ---        150         ---
    Purchase of PMC-Sierra, net of cash acquired                                           ---        ---       4,673
    Purchase of Bit assets, net of cash acquired                                            71        ---         ---
    Additions to plant and equipment                                                    (4,000)   (10,909)     (6,565)
                                                                                       -------    -------     -------
          Net cash provided by (used in) investing activities                          (10,111)   (12,985)      6,518

Cash flows from financing activities:
    Proceeds from issuance of long-term debt                                               353      2,592       6,657
    Proceeds from issuance of common stock                                               3,110     22,737       3,157
    Proceeds from payments of notes receivable                                              32         30         137
    Principal payments under capital lease obligations                                  (2,310)    (1,217)     (1,383)
    Repayment of notes payable and long-term debt                                      (17,588)    (1,794)    (10,417)
                                                                                       -------    -------     -------
           Net cash provided by (used in) financing activities                         (16,403)    22,348      (1,849)
                                                                                       -------    -------     -------

Net increase (decrease) in cash and cash equivalents                                    (6,895)    29,311       1,120
Cash and cash equivalents, beginning of the period                                      41,933     12,622      11,502
                                                                                       -------    -------     -------
Cash and cash equivalents, end of the period                                           $35,038    $41,933     $12,622
                                                                                      ========   ========    ========
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

                                                                                         Three Years Ended December 31,
                                                                                          1996       1995        1994
                                                                                          ----       ----        ----


Supplemental disclosures of cash flow information:
<S>                                                                                  <C>         <C>         <C>      
    Cash paid for interest                                                            $  1,278    $   926     $ 1,764
    Cash paid for income taxes                                                        $ 11,820    $ 1,851     $    89
                                                                                     
Supplemental disclosures of noncash investing and financing activities:
    Conversion of convertible preferred stock into common stock                            ---    $   235     $ 1,638
    Capital lease obligations incurred for purchase of property and equipment         $ 16,145    $ 4,069     $   827
    Issuance of PMC special shares to be exchanged for common shares                       ---    $18,935     $16,500
    Conversion of PMC special shares into common stock                                $  3,035    $19,906         ---
    Short term debt obligations incurred for wafer fabrication capacity deposits           ---    $30,240         ---
    Cancellation of short-term debt obligations incurred for wafer fabrication        $(15,120)       ---         ---
      capacity

During the years ended December 31, 1996,  1995,  and 1994, the Company  retired
    assets with an original cost of $10,377, $2,851 and $4,855, respectively and
    related accumulated depreciation of $9,858, $2,839 and $4,757, respectively.

See accompanying notes.
<PAGE>
<FN>

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1.   Summary of Significant Accounting Policies

         Basis  of  presentation.   The  accompanying   consolidated   financial
statements  include  the  accounts  of Sierra  Semiconductor  Corporation  ("the
Company"  or  "Sierra")  and its  wholly  owned  subsidiaries.  All  significant
intercompany   accounts  and   transactions   have  been   eliminated  from  the
consolidated financial statements.  The Company's fiscal year ends on the Sunday
nearest December 31. For ease of presentation,  December 31 has been utilized as
the fiscal year end for all  financial  statement  captions.  Fiscal years 1996,
1995 and 1994 each consisted of 52 weeks.

         Estimates.  The preparation of financial  statements in conformity with
generally accepted  accounting  principles requires management to make estimates
and assumptions  that affect reported amounts of assets,  liabilities,  revenues
and  expenses  as of the dates and for the  periods  presented.  Actual  results
may differ from those estimates.

         Cash equivalents and short-term  investments.  Cash equivalents consist
of  highly  liquid  debt  instruments  with  original   maturities  at  date  of
acquisition  of 90 days or less  that have  insignificant  interest  rate  risk.
Short-term  investments  consist  of  money  market  instruments  with  original
maturities  greater than 90 days, but less than one year. The Company  maintains
its cash and cash  equivalents  in several  financial  instruments  with various
banks and investment banking institutions and maintains  short-term  investments
in several financial instruments. The diversification of risk is consistent with
Company policy to preserve the principal and maintain liquidity.

         Under  Financial  Accounting  Standards No. 115 "Accounting for Certain
Investments  in Debt and  Equity  Securities"  (FAS 115)  management  classifies
investments as  available-for-sale  or  held-to-maturity at the time of purchase
and reevaluates  such designation as of each balance sheet date. Debt securities
are classified as held-to-maturity  when the Company has the positive intent and
ability to hold the  securities  to maturity.  Held-to-maturity  securities  are
stated at amortized cost with corresponding premiums or discounts amortized over
the life of the  investment  to  interest  income.  Marketable  equity  and debt
securities    not   classified   as    held-to-maturity    are   classified   as
available-for-sale  and  reported at fair value.  Unrealized  gains or losses on
available-for-sale  securities  have not been included in equity as such amounts
are  immaterial.  Realized  gains and losses and  declines in value judged to be
other-than-temporary  on available-for-sale  securities are included in interest
income.  The cost of  securities  sold is based on the  specific  identification
method.
</FN>
</TABLE>
<TABLE>
<CAPTION>

         Investments  at December  31, 1996  mature  through  February  1997 and  are  classified  as and consist 
of the following (in thousands):
                                                                   Amortized     Gross Unrealized        Estimated
                                                                      Cost      Gains       Losses      Fair Value
                                                                                           
<S>                                                                <C>          <C>        <C>            <C>
Held-to-maturity investments
   Banker's Acceptances                                             $ 1,711      $ ---      $ ---          $ 1,711
   Commercial paper                                                 $21,470      $   2      $ ---          $21,472
                                                                                                
Total Investments                                                   $23,181      $   2      $ ---          $23,183
                                                                    =======     ======     ======          =======
Total included in cash and cash equivalents                         $16,157      $   1      $ ---          $16,158
Total included in short-term investment                               7,024          1        ---            7,025
                                                                    -------     ------     ------            -----
Total Investments                                                   $23,181      $   2      $ ---          $23,183
                                                                    =======     ======     ======          =======
</TABLE>
<PAGE>
<TABLE>
<CAPTION>

         Investments  at December 31, 1995 matured  through  February  1996, are classified as and consist of the
 following (in thousands):

                                                                   Amortized     Gross Unrealized        Estimated
                                                                      Cost      Gains       Losses      Fair Value
                                                                                           
<S>                                                                <C>          <C>        <C>            <C>
Held-to-maturity investments
   Commercial Paper                                                 $ 2,987      $   1      $ ---          $ 2,988
                                                                                                 
Available-for-sale investments
   Auction rate preferreds                                            3,012        ---        ---            3,012
                                                                    -------     ------     ------            -----

Total Investments                                                    $5,999      $   1      $ ---           $6,000
                                                                    =======     ======     ======          =======

Total included in cash and cash equivalents                          $1,995      $ ---      $ ---           $1,995
Total included in short-term investment                               4,004          1        ---            4,005
                                                                    -------     ------     ------            -----
Total Investments                                                    $5,999      $   1      $ ---           $6,000
                                                                    =======     ======     ======          =======
</TABLE>

         Proceeds  from  sales  and  realized   gains  or  losses  on  sales  of
available-for-sale securities for all years presented were immaterial.

         Inventories.  Inventories  are  stated at the lower of cost  (first-in,
  first out) or market  (estimated   net realizable value).   The  components of
 inventories are as follows (in thousands):

                                                          December 31,
                                                      1996           1995
                                                      ----           ----

Work-in progress                                    $3,335         $6,604
Finished goods                                       5,897          8,239
                                                    ------          -----
                                                   $ 9,232        $14,843
                                                   =======        =======

         Property and equipment,  net. Depreciation and amortization of property
and equipment are provided on the straight-line method over the estimated useful
lives of the assets,  ranging from two to five years,  or the  applicable  lease
term,  whichever is shorter.  $16,425 of assets were  written down in connection
with the third  quarter  1996  restructuring  (see Note 12). The  components  of
property and equipment are as follows (in thousands):
                                                          December 31,
                                                     1996            1995
                                                     ----            ----

Machinery and equipment                            $39,854        $45,059
Leasehold improvements                               1,117          2,702
Furniture and fixtures                               1,890          1,614
                                                   -------          -----
Total cost                                          42,861         49,375
Accumulated depreciation                           (26,183)       (26,671)
                                                   -------        -------
                                                   $16,678        $22,704
                                                   =======        =======
<PAGE>
         Intangible  Assets.  Goodwill  associated  with  acquisitions  is being
amortized on a  straight-line  basis over ten years and is carried at a net book
value of $7.9  million  and  $11.3  million  at  December  31,  1996  and  1995,
respectively.  The 1996 net book value  excludes the goodwill for the  Company's
B.V.  operations,  which was  written  off in the third  quarter  restructuring.
Purchased  technology  is being  amortized on a  straight-line  basis over seven
years.  Among  other   considerations,   to  assess   impairment,   the  Company
periodically  calculates  undiscounted  future cash flows to determine that they
exceed the unamortized balance of the related intangible asset.

         Deposits for wafer fabrication  capacity.  In 1995, the Company entered
into wafer fabrication supply agreements with various  foundries.  In connection
with these  agreements,  the Company made deposits of $3 million and $24 million
in 1995 and  1996  respectively.  In 1996,  certain  of  these  agreements  were
renegotiated  such that no more  deposits are required  under one  agreement and
approximately $15 million of notes payable and related deposits were offset (see
Note 5). Approximately $12 million is to be refunded in the year 2000.

         Accrued  liabilities.  The  components  of accrued  liabilities  are as
follows (in thousands):

                                                          December 31,
                                                     1996            1995
                                                     ----            ----

Accrued compensation and benefits                  $ 3,846        $ 2,343
Accrued royalties                                    1,628          1,649
Other accrued liabilities                            4,072          4,502
                                                   -------        -------
                                                   $ 9,546        $ 8,494
                                                   =======        =======

         Foreign  currency  translation.  For all foreign  operations,  the U.S.
dollar is the functional currency.  Assets and liabilities are remeasured at the
year-end exchange  rates. Statements of operations are remeasured at the average
exchange  rates  during  the  year.  Gains  and  losses  from  foreign  currency
remeasurement are included in interest income and other, net.

         The Company enters into foreign  currency  forward  exchange  contracts
(forward  contracts) to reduce the impact of currency  fluctuations  on monetary
asset and  liability  positions  of its foreign  subsidiaries.  Gains and losses
associated  with  currency  rate  changes  on  forward  contracts  are  recorded
currently in income and were immaterial for all periods  presented.  At December
31, 1996 and 1995, the Company had no outstanding forward contracts.

         Concentration   of  credit  risk.   The  Company   believes   that  the
concentration  of  credit  risk in its trade  receivables  with  respect  to the
high-technology  industry is  substantially  mitigated by the  Company's  credit
evaluation  process,  relatively  short  collection  terms, and the geographical
dispersion of sales. The Company generally does not require collateral. Bad debt
write-offs have been insignificant for all years presented.

         Revenue  recognition.  Revenue is recognized at the time of shipment to
the customer.  Reserves are provided currently for estimated product returns and
price protection that may occur under Company  programs.  Such reserves were not
material at December 31, 1995 and 1994.  In  conjunction  with the third quarter
1996 restructure reserve, the Company had accrued  approximately $5 million as a
provision for price protection and product  returns.  At December 31, 1996, this
reserve was approximately $2 million.

         Interest income  (expense),  net. The components of interest income and
interest expense, net are as follows (in thousands):

                                                       Year Ended
                                                      December 31,
                                               1996       1995       1994
                                               ----       ----       ----

Interest income                              $1,840     $1,244       $825
Interest expense                             (1,278)      (892)    (1,249)
Other                                           117        145         34
                                             ------     ------     ------
                                               $679       $497      $(390)
                                             ======     ======     ======
<PAGE>

         Net income  (loss) per share.  Net income  (loss) per share is computed
using the  weighted  average  number of common and  dilutive  common  equivalent
shares  outstanding  during the  period.  Accretion  attributed  to  convertible
preferred  stock is deducted from net income  available to common  shareholders.
Potentially  dilutive  common  equivalent  shares  consist of warrants and stock
options (using the treasury stock method). Fully diluted earnings per share have
not been presented because the amounts would not be significantly different.

         Income  Taxes.   Deferred  income  taxes  are  provided  for  temporary
differences between financial statement and income tax reporting.

         Stock Compensation. Statement of Financial Accounting Standards No. 123
"Accounting for Stock-Based  Compensation," (SFAS No. 123) permits, but does not
require  companies to recognize  compensation  expense for stock-based  employee
compensation  plans at fair value. The Company has chosen to continue to account
for  stock-based  compensation  using the intrinsic  value method  prescribed in
Accounting  Principles  Board  Opinion No. 25,  "Accounting  for Stock Issued to
Employees," and related interpretations.  Accordingly,  compensation expense for
stock  options is measured as the excess,  if any, of the quoted market price of
the Company's stock at the date of the grant or modification  over the amount an
employee  must pay to acquire the stock.  Note 7 to the  Consolidated  Financial
Statements  contains a summary of the pro forma  effects to reported  net income
and  earnings  per  share for 1996 and  1995,  if the  Company  had  elected  to
recognize compensation expense based on the fair value of the options granted at
grant date as  prescribed  by SFAS No. 123. The effects of applying SFAS No. 123
for providing pro forma  disclosures are not likely to be  representative of the
effects on reported net income for future years.

NOTE 2. Acquisitions, Divestitures and Investments in Other Companies

Bit, Inc.
- ---------
         During the third quarter of 1996, a subsidiary of the Company  acquired
the ethernet switching assets,  intellectual  property, and certain other assets
of  Bit,  Inc.  in  exchange  for  shares  of  Sierra  common  stock  and  other
consideration.  The aggregate value of this transaction was  approximately  $8.1
million,  which includes acquisition costs incurred by the Company. These assets
of Bit,  Inc.,  were  acquired in exchange for 804,407  shares of Sierra  common
stock with a value of  approximately  $6.8 million (based on the market value of
Sierra common stock issued subject to restrictions  on transfer),  approximately
$0.5 million of net liabilities assumed by the Company's  subsidiary,  the value
of options to purchase common stock of the Company, forgiveness of principal and
interest  from loans  provided by a  subsidiary  of the Company,  and cash.  The
acquisition  resulted in a $7.8 million  charge for the  purchase of  in-process
research and development.  The remaining $0.3 million of technology  assets have
been  capitalized  as long term assets which will be amortized over seven years.
Results  of  operations  include  the costs of  continuing  the  development  of
products and related activities acquired from Bit, Inc. after the closure of the
acquisition on September 3, 1996. The proforma effect of combining the Bit, Inc.
transaction  with the Company's  operations in 1995 and prior to the acquisition
in 1996  are not  reported  separately  because  they are not  considered  to be
material.

I.C. Works, Inc.
- ----------------
         During the first  quarter of 1996,  the Company  acquired $3 million of
common stock of I.C. Works, Inc., a foundry located in San Jose, California.  In
addition,  the  Company  is  obligated  to provide  semiconductor  manufacturing
equipment to I.C.  Works,  Inc.,  which the Company has provided  under  capital
leases  (see  Note  5),  in  consideration  for  guaranteed  wafer  capacity  at
discounted prices.
<PAGE>

SiTel Sierra B.V.
- -----------------
         During the fourth  quarter of 1995,  the Company  sold its  interest in
SiTel-Sierra B.V. to National Semiconductor Corporation.  Proceeds from the sale
of this  investment of $7 million in cash were received during the first quarter
of 1996. This transaction resulted in a pre-tax gain of $6.7 million.

Sierra Wireless, Inc.
- ---------------------
         On July 7, 1993,  the  Company and MPR  Teltech  Ltd.  (MPR) of British
Columbia, Canada announced an investment in a new company called Sierra Wireless
Inc.  (Sierra  Wireless).  MPR contributed  technology  licenses in exchange for
Sierra Wireless's non-voting preferred stock. The Company invested approximately
$2.5  million of cash in  exchange  for shares of Sierra  Wireless's  non-voting
preferred stock. This initial investment was expensed in 1993 as Sierra Wireless
was  still in its  development  stage.  In 1996,  1995,  and 1994,  the  Company
invested an additional approximately $0.2, $1.4, and $2.5 million, respectively,
in Sierra Wireless.  These  investments were capitalized and are being accounted
for as an equity  investment on the cost basis,  since Sierra Wireless is now an
operating  company.  Sierra  Wireless has  developed  and is marketing  portable
computer  modems and modem  sub-systems  built to Cellular  Digital  Packet Data
(CDPD) performance specifications.

Prometheus Products, Inc.
- -------------------------
         On October 2, 1994,  the  Company  acquired  Prometheus  Products  Inc.
(Prometheus),  a  distributor  of software  and  hardware  products for personal
computers headquartered in Tualatin,  Oregon, in exchange for the elimination of
accounts receivable owed by Prometheus to the Company, a guaranteed cash payment
to the  shareholders  of  Prometheus  and future cash payments  contingent  upon
future sales and profits for Prometheus.  The acquisition was accounted for as a
purchase. In December 1995, the Company decided to sell or dispose of Prometheus
(See Note 3).

PMC-Sierra
- ----------
         On  September  2,  1994,  the  Company   acquired   voting  control  of
PMC-Sierra,  Inc. ("PMC") of Burnaby,  British  Columbia,  Canada.  PMC supplies
broadband  transmission  and  networking  chip set products for ATM,  SONET/SDH,
T1/E1 and fast Ethernet  applications.  PMC was  established in July 1992 by the
Company, which invested approximately $4.9 million of cash in exchange for PMC's
non-voting preferred stock representing approximately 61% of PMC's securities on
a  fully  diluted  basis;  MPR  Teltech  Ltd.,  a  Canadian   corporation  which
contributed assets and technology licenses in exchange for non-voting  preferred
stock; a venture capital investor,  which purchased  non-voting  preferred stock
for cash; and PMC's employees, who purchased voting common stock.

         The Company  acquired voting control of PMC through a  recapitalization
of PMC.  In the  recapitalization,  the  Company  exchanged  its PMC  non-voting
preferred stock for PMC's voting Ordinary Shares,  and PMC's other  shareholders
exchanged their  preferred  stock and common stock for PMC Special Shares.  Each
PMC A Special  Share is  currently  redeemable  at the  holder's  option for two
shares of the Company's Common Stock.  The Company reserved  5,000,000 shares of
its Common Stock for issuance in connection  with requests to redeem PMC Special
Shares then outstanding or issuable upon exercise.

         The  acquisition of voting control through PMC's  recapitalization  was
accounted for as a purchase of the interests of the other  shareholders  in PMC.
The total  purchase  price,  based on the value of the  5,000,000  shares of the
Company's Common Stock reserved for issuance,  was approximately  $17.8 million.
The Company  recorded a $12.7  million  charge  during the third quarter of 1994
related to the value of  in-process  research  and  development  acquired in the
transaction.  Additional  purchased  technology  with a value of $3.2 million is
being amortized over seven years.
<PAGE>
         Under the terms of the recapitalization agreement, in the third quarter
of 1995 the  Company  adjusted  the 1994  purchase  price  paid to the other PMC
shareholders.   Accordingly,   the  minority  shareholders  received  additional
consideration  through the right to acquire an  additional  1,294,722  shares of
Common Stock in exchange for PMC B Special Shares.  The issuance of these shares
is reflected in the  Company's  accompanying  financial  statements as a special
charge to income of $10.6 million  relating to compensation  expense in 1995 and
an increase in goodwill of $9.1 million.

         The Special Shares of PMC will be classified  outside of  shareholders'
equity until such shares are exchanged for Sierra Common Stock.

         Before the recapitalization, the Company held only non-voting preferred
stock in PMC, and accordingly  PMC's assets,  liabilities and operating  results
were  not   included   in  those   of  the   Company.   From  the  date  of  the
recapitalization,   PMC's  balance   sheet  and  operating   results  have  been
consolidated in the Company's financial statements.

         The  pro-forma  operating  results for 1994 with the  inclusion of PMC,
would have been net revenue of $118,131,  net loss of  $(6,798),  and a net loss
per share of $(0.27).

         In conjunction with the acquisition of PMC, liabilities were assumed as
follows:

         Fair value of assets acquired                               $33,048
         Consideration paid:
             Value of shares issued                $16,500
             Acquisition costs                       1,300           (17,800)
                                                     -----
             In process technology expensed                          (12,748)
                                                                    --------
         Liabilities assumed                                          $2,500

NOTE 3. Discontinued Operations

         On December 28, 1995, the Company's Board of Directors  approved a plan
to  sell  or   discontinue   the   operations  of  Prometheus   Products,   Inc.
("Prometheus").  The Company purchased  Prometheus in the third quarter of 1994,
and has operated it as a separate  business  unit.  Accordingly,  Prometheus has
been treated as a discontinued operation and the Company's results of continuing
operations have been  reclassified  to remove  Prometheus'  previously  reported
results.  Revenues of Prometheus  were  $19,018,000  and  $3,798,000 in 1995 and
1994,  respectively.  The loss from  discontinued  operations for the year ended
December 31, 1995 is net of an income tax benefit of $742,000. The components of
net current  liabilities (in 000's) of  discontinued  operations at December 31,
1995 and 1996 are detailed in the table below.

                                                         1996         1995
                                                       --------     --------
Cash                                                                $   150
Accounts receivable                                                   3,000
Inventory                                                             1,000
Property and equipment - net                                            150
Accounts payable                                                     (2,387)
Accrued liabilities                                    $  (753)      (4,844)
Guaranteed royalties                                      (847)      (1,165)
                                                       -------      -------
Net current liabilities of discontinued operations     $(1,600)     $(4,096)
                                                      ========     ========
<PAGE>
         The Company  contracted  with an  investment  banking firm in the first
quarter  of 1996 to engage in  efforts  to sell  Prometheus.  The effort to sell
Prometheus has not resulted in a sale and the Company has subsequently completed
the  closure of most  operations  of  Prometheus,  except for the  hardware  and
software  technical support function which provides product warranty support for
the installed base of products  previously  sold. All  liabilities and operating
results of  Prometheus  for 1996 have been  recorded  against  the  discontinued
operations provision established in the fourth quarter of 1995.

NOTE 4.  Line of Credit

         At December 31, 1996, the Company had available a line of credit with a
bank under which the Company may borrow up to $10 million  with  interest at the
bank's prime rate (6.9% at December 31, 1996). At December 31, 1996,  there were
no amounts  outstanding  under the line of credit.  At December 31, 1995, a $2.0
million  standby letter of credit was outstanding  under the line of credit.  In
the fourth quarter of 1996, as a result of the restructure charge, the Company's
line of credit  agreement with the bank was renegotiated to allow the Company to
borrow up to $10 million under the line of credit,  provided that each borrowing
is fully cash  secured.  The  agreement  requires the Company to maintain,  on a
quarterly basis,  minimum cash equal to three times the then current outstanding
principal  balance of the term loan. The agreement  prohibits dividend  payments
without the bank's prior  written  consent and other major  transactions  except
that the Company may (i) acquire other companies using up to $1 million in cash,
(ii) enter into off balance sheet equipment leases, not to exceed $15 million in
the  aggregate,  and  (iii)  issue  convertible  securities  with  subordination
provisions  satisfactory to the bank. The agreement  expires on July 1, 1997. As
of December  31, 1996 and 1995,  the Company was in  compliance  with all of its
covenants.

NOTE 5. Short-Term Debt and Obligations Under Capital Leases and Long Term Debt

         The Company  leases  furniture and equipment  under  long-term  capital
leases which have been  accounted  for as  installment  purchases.  Accordingly,
capitalized costs of approximately $22,737,000 and $7,104,000,  respectively, at
December  31,  1996 and  1995  and  accumulated  amortization  of  approximately
$4,710,000 and $2,242,000, respectively, are included in property and equipment.

Future  minimum lease  payments at December 31, 1996 under capital leases are as
follows (in thousands):

Year ended December 31 :
   1997                                                      $5,531
   1998                                                       5,443
   1999                                                       5,097
   2000                                                       4,281
   2001                                                       3,469
                                                             ------
   Total minimum lease payments                              23,821
   Less amount representing interest                          4,474
                                                              -----
   Present value of net minimum lease payments              $19,347
                                                            =======

         In 1996 the Company entered into two master capital leases, whereby the
Company  is  obligated  to lease  approximately  $10  million  of  semiconductor
manufacturing  equipment for one of its foundries.  These leases have three year
terms,  with two consecutive one year renewal options.  The amounts in the table
above  include  commitments under  these new  leases.  In  conjunction  with the
restructuring  in 1996,  the  Company  wrote  off $6.9  million  related  to its
commitment to provide such equipment (see Note 11).
<PAGE>
Short-term debt and long-term debt are as follows (in thousands):
<TABLE>
<CAPTION>
                                                                                                            December 31,
                                                                                         
                                                                                                       1996           1995
                                                                                                       ----           ----

<S>                                                                                                <C>            <C>
Unsecured non-interest bearing promissory notes, payable in two equal installments, on
   March 31, 1996 and October 31, 1996                                                                  ---        $30,240
Secured equipment loans, payable in 48 monthly installments commencing
    on September 12, 1994, interest ranging from 7.71% to 9.23%                                       3,567          5,000
Various unsecured notes, payable in various installments with interest
    rates ranging from 0% to 9%                                                                       1,004            724
Bank term debt, payable in 37 monthly installments commencing on
    December 1, 1994, interest rate at prime + 1.75% (10.25% at
    December 31, 1995 and 10% at December 31, 1996)                                                     719          1,504
                                                                                                      -----          -----

                                                                                                      5,290         37,468
Less current portion                                                                                 (2,279)       (32,521)
                                                                                                    -------        -------
                                                                                                     $3,011         $4,947
                                                                                                    =======        =======
</TABLE>
Maturities of long-term debt are as follows (in thousands):

Fiscal year ended
   1997                                                     $ 2,279
   1998                                                       1,405
   1999                                                         971
   2000                                                         106
   2001                                                         106
   Thereafter                                                   423
                                                            -------
                                                            $ 5,290
                                                            =======

         Fair value of financial  instruments.  The estimated fair value amounts
have been  determined  by the Company using  available  market  information  and
appropriate valuation methodologies.  However, considerable judgment is required
in interpreting market data to develop the estimates of fair value. Accordingly,
the estimates  presented  herein are not  necessarily  indicative of the amounts
that the Company could realize in a current market exchange.

         The fair  value of the  unsecured  promissory  notes was  approximately
$26,707,000  at December 31, 1995 versus a carrying  value of  $30,240,000.  The
aggregate fair value of the Company's  other long-term debt at December 31, 1996
and 1995 approximates its carrying value.
<PAGE>
NOTE 6. Commitments and Contingencies

         Operating  leases.  The Company leases its facilities  under  operating
lease  agreements  which expire at various dates through April 2006.  Total rent
expense for the years ended December 31, 1996,  1995, and 1994 was $2.1 million,
$2.3 million, and $2.5 million,  respectively.  Minimum rental commitments under
these leases are as follows:
(In thousands)
Year ended December 31:
   1997                                                     $ 2,148
   1998                                                       2,154
   1999                                                       2,052
   2000                                                       1,869
   2001                                                       1,887
   Thereafter                                                 6,451
                                                            -------
                                                            $16,561
                                                            =======

         In June 1996,  the Company  entered  into a 7-year lease for a facility
which it occupied in the fourth  quarter of 1996.  The table above  includes all
commitments  related to this lease (see further discussion  regarding this lease
under excess facility costs in Note 11).

         Supply  agreements.  The  Company's  supply  agreement  with  Chartered
Semiconductor  expires on November  17, 199,  but certain  provisions  have been
superseded by a wafer capacity  agreement which expires in December 2000 whereby
Chartered  is obligated  to supply the Company  with a  predetermined  number of
wafers per quarter.  TSMC is obligated to provide,  and the Company is obligated
to purchase,  certain quantities of wafers per year under an agreement with TSMC
which terminates on December 31, 2000.

         Development and licensing  agreement.  In the 1996, the Company entered
into an agreement with an integrated  circuit design and  development  firm, for
the  design  and  development  of  certain  semiconductor  products.  Under this
agreement,  the Company is obligated to pay $0.25 million in license  fees,  and
$2.3 million of royalty payments. The license fees were paid and expensed by the
Company in 1996.  The  royalty  payment  obligation  must be paid by the Company
within two years of the Company's  acceptance and  verification  of the licensed
designs.

         Contingencies.  In the normal course of business,  the Company receives
and makes  inquiries with regard to possible patent  infringement.  Where deemed
advisable,  the Company may seek or extend  licenses or  negotiate  settlements.
Outcomes  of such  negotiations  may not be  determinable  at any point in time;
however,  management  does not believe that such licenses or  settlements  will,
individually  or in  the  aggregate,  have  a  material  adverse  effect  on the
Company's financial position, results of operations or liquidity.

         Risks and  Uncertainties.  Technological  change - the  markets for the
Company's  products are characterized by evolving  industry  standards and rapid
technological  change  and  product  obsolescence.  The  carrying  value  of the
Company's products in inventory may be materially  impaired in the future should
these changes occur more quickly than the Company  anticipated.  Wafer  capacity
agreements - as discussed above, the Company has entered into various agreements
to secure  future wafer  capacity.  Should the Company need more  capacity or if
there is a decline in demand for the  Company's  products  reducing the need for
this contracted capacity, estimates related to the carrying value of deposits or
prepayments  or  related  to  future   commitments   could  materially   change.
Restructure reserves - restructure reserves include  management's' best estimate
of the liabilities and the estimated  future costs associated with the exit from
the modem chipset  business and the  associated  restructuring  of the Company's
non-networking  operations. The actual amounts which the Company will ultimately
incur  could  differ  materially  in the near term from the  amounts  assumed in
estimating the costs associated with the restructuring.
<PAGE>
NOTE 7. Shareholders' Equity

         Convertible preferred stock The Company has authorized 5,000,000 shares
of undesignated  preferred stock. The Company has also authorized 500,000 shares
of redeemable  convertible  preferred stock (the preferred  stock).  In February
1995,  11,488 shares of the preferred  stock were converted and 24,766 shares of
Common Stock were issued.

         Common  Stock At December  31, 1996 and 1995,  the Company had reserved
1,937,000 and 2,573,000  shares,  respectively,  of Common Stock to be issued to
holders of PMC special  shares and options to purchase PMC special  shares.  The
holders of the special shares have the right to exchange one A special share for
two shares of Sierra Common Stock,  and one B special share for 0.54612 share of
Sierra Common Stock.  Upon exchange,  amounts will be  transferred  from the PMC
special shares account to Sierra common stock on the consolidated balance sheet.

         During 1996, the Company issued a warrant to purchase  25,000 shares of
common stock at $9.25 per share to an investment  banking firm in settlement for
services previously expensed. The warrant expires in August 2000.

         The Company has adopted a 1987  Incentive  Stock Plan, a 1994 Incentive
Stock  Plan and a 1996  Incentive  Stock  Plan  (the  "Plans").  Under the Plans
6,317,963  shares have been issued,  3,218,939  shares have been  exercised  and
1,528,549   shares  remain  available  for  future  issuance  to  employees  and
consultants.  Options to purchase shares of the Company's common stock under the
Plan may be  granted  at not less than 85% of the fair value of the stock on the
date granted. The options generally expire after five to ten years and vest over
four years.


<PAGE>
<TABLE>
<CAPTION>

         Changes  during 1994,  1995,  and 1996 in options  outstanding  for the
combined option plans were as follows:

                                                                                             Weighted Average
                                                       Options Available                      Exercise Price
                                                         For Issuance            Shares          Per Share

- --------------------------------------------------------------------------------------------------------------
<S>                                                    <C>                    <C>                <C>  
Outstanding at December 31, 1993                            601,038            2,855,216           $4.02
     Authorized                                           1,200,000
     Granted                                             (1,273,000)           1,273,000           $4.39
     Exercised                                                  ---             (891,098)          $2.75
     Expired                                                    ---                  ---
     Canceled                                               722,814             (722,814)          $4.84
                                                            -------            ---------

Outstanding at December 31, 1994                          1,250,852            2,154,304           $4.41
     Authorized                                           1,600,000
     Granted                                             (1,094,800)           1,094,800          $14.16
     Exercised                                                  ---             (588,742)          $4.56
     Expired                                               (809,038)                 ---           $5.12
     Canceled                                               305,211             (305,211)          $6.21
                                                            -------            ---------

Outstanding at December 31, 1995                          1,252,225            2,715,151           $8.13
     Authorized                                           1,250,000
     Granted                                             (1,403,574)           1,403,574          $14.11
     Exercised                                                  ---             (503,825)          $4.74
     Expired                                                (85,980)                 ---           $4.07
     Canceled                                               515,878             (515,878)         $12.73
                                                            -------            ---------

Outstanding at December 31, 1996                          1,528,549            3,099,022          $10.63
                                                          =========            =========
</TABLE>
<PAGE>
<TABLE>
<CAPTION>



         The  following  table   summarizes   information   concerning   options
outstanding for the combined option plans at December 31, 1996:

                                  Options Outstanding                            Options Exercisable
                        ---------------------------------------------          -----------------------
                                          Weighted Average   Weighted                         Weighted
                                             Remaining       Average                           Average
Range of                  Number            Contractual      Exercise             Number      Exercise
Exercise Prices        Outstanding             Life           Price            Exercisable       Price
- ---------------        -----------             ----          ------            -----------     -------
<C>                  <C>                     <C>            <C>                <C>            <C>       
$  0.00 - $  0.00         20,000               9.75          $ 0.00                     0      $   ---
$  0.89 - $  0.89         64,465               9.68          $ 0.89                42,437      $  0.89
$  3.50 - $  4.75        812,885               6.91          $ 3.93               582,549      $  3.93
$  5.50 - $  7.88        233,524               5.83          $ 5.72               226,585      $  5.69
$  8.63 - $ 12.88        854,755               9.04          $10.04               158,130      $  8.88
$ 14.25 - $ 21.25      1,011,156               9.00          $17.07               220,329      $ 16.92
$ 22.25 - $ 26.06        102,237               8.83          $24.19                22,844      $ 25.13
- -----------------      ---------               ----          ------            ----------       ------
$  0.00 - $ 26.06      3,099,022               8.24          $10.63             1,252,874      $  7.44
</TABLE>

         For 1995, there were 1,037,181 options  exercisable at the end of 1995,
with a weighted average  exercise price of $5.4267.  The expiration dates of the
remaining outstanding options range from November 30, 2001 to December 2, 2006.

         As of December 31, 1996, the number of shares  authorized and available
for grant is 1,528,549  shares,  with a total of 4,627,571 shares authorized but
unissued.

         Employee Stock  Purchase Plan In 1991, the Company  adopted an Employee
Stock  Purchase Plan (ESPP) under  Section 423 of the Internal  Revenue Code and
reserved  1,060,000  shares of common stock for issuance  under the Plan.  Under
this Plan,  qualified  employees  are entitled to purchase  shares at 85% of the
lower of fair market value at the  beginning or end of the related  subscription
period.  There were 79,863  shares issued under the Plan during 1996 and 164,126
shares issued under the Plan during 1995. As of December 31, 1996, the number of
shares  available  for issuance  under the purchase  plan was 250,203  shares of
common stock.

         Stock-based  compensation In accordance with the provisions of SFAS No.
123, "Accounting for Stock-Based Compensation," ("FASB 123") the Company applies
APB Opinion 25 and related  interpretations  in accounting  for its  stock-based
awards and, accordingly, does not generally recognize compensation expense.

         Pro forma information regarding net income (loss) and net income (loss)
per share is required by FASB 123 for awards  granted or modified after December
31, 1994 as if the Company had accounted for its stock-based awards to employees
under  the fair  value  method  of FASB  123.  The fair  value of the  Company's
stock-based  awards to employees  was  estimated  using a  Black-Scholes  option
pricing model. The Black-Scholes option valuation model was developed for use in
estimating the fair value of traded  options which have no vesting  restrictions
and are fully  transferable.  In addition,  the Black-Scholes model requires the
input of highly  subjective  assumptions  including  the  expected  stock  price
volatility.   Because  the  Company's   stock-based  awards  to  employees  have
characteristics  significantly  different  from  those of  traded  options,  and
because changes in the subjective  input  assumptions can materially  affect the
fair  value  estimate,  in  management's  opinion,  the  existing  models do not
necessarily  provide  a  reliable  single  measure  of  the  fair  value  of its
stock-based  awards to employees.  The fair value of the  Company's  stock-based
awards to  employees  was  estimated  assuming  no  expected  dividends  and the
following weighted-average assumptions:
<PAGE>

                                        Options                  ESPP
                                 --------------------    ---------------------
                                   1996        1995        1996        1995
                                 --------    --------    --------    --------
Expected life (years)               2.2         2.5         0.5         0.5
Expected volatility                 0.8         0.6         0.8         0.6
Risk-free interest rate             5.7%        6.5%        5.3%        5.9%

         For pro forma  purposes,  the  estimated  fair  value of the  Company's
stock-based  awards to  employees  is  amortized  over the  vesting  period (for
options) and the six-month purchase period (for stock purchases under the ESPP).
If the Company had elected to recognize  compensation  expense based on the fair
value of the options  granted at grant date as  prescribed  by SFAS no. 123, net
income (loss) and net income (loss) per share would have been reduced to the pro
forma amounts indicated in the table below.

(in thousands except per share amounts):
                                                              1996         1995
- --------------------------------------------------------------------------------
Net income (loss)                      As reported         $(48,150)     $ 1,479
                                       Pro forma           $(54,006)     $    89
Net income (loss) per share            As reported         $  (1.62)     $  0.05
                                       Pro forma           $  (1.82)     $  0.00

         Because FASB 123 is  applicable  only to awards  granted  subsequent to
December  31,  1994,  its pro forma  effect  will not be fully  reflected  until
approximately  1999. The  weighted-average  fair value of options granted during
1996 and 1995 were $6.94 and $5.99 per share, respectively.

         The  weighted-average  fair value of  employee  stock  purchase  rights
exercised  during  1996 was $3.78 per  share.  Options  to  purchase  a total of
1,318,500  shares of common stock were granted during 1996 with exercise  prices
equal to the market price of the stock on the grant date.  The  weighted-average
exercise price and weighted-average  fair value of these options were $14.98 and
$6.69,  respectively.  Options to  purchase  a total of 85,074  shares of common
stock were granted  during 1996 with  exercise  prices less than market value of
the  stock  on  the  grant  date.  The   weighted-average   exercise  price  and
weighted-average   fair  value  of  these   options   were  $0.68  and   $10.77,
respectively.
<PAGE>
NOTE 8. Income Taxes

         The income  tax  provisions,  calculated  under Statement of  Financial
Accounting  Standards No. 109 (FAS 109) consist of the following:

                                                  Three Years Ended December 31,
(In thousands)
                                                  1996         1995         1994
                                                  ----         ----         ----
Current:
   Federal                                      $2,109       $3,167    $     ---
   State                                            42          315          100
   Foreign                                       8,844        5,621        1,018
                                                 -----        -----        -----

   Total Current                                10,995        9,103        1,118
Deferred:
   Federal                                      (1,799)         ---          ---
   Foreign                                         562          887          394
                                                 -----        -----        -----
   Total Deferred                              (1,237)          887          394

Provision for income taxes                       9,758        9,990        1,512
Benefit allocated to loss from 
   discontinued operations                         ---          742          ---
                                                 -----        -----        -----
Provision attributable to continuing
   operations                                   $9,758      $10,732       $1,512
                                               =======      =======      =======

         Actual 1996 and 1995  current tax  liabilities  have been  decreased by
$2,628,000 and  $1,984,000,  respectively,  due to employee stock option related
tax benefits which were credited to common stock.

         A reconciliation  between the Company's effective tax rate and the U.S.
statutory rate (35% in 1996 and 1995, and 34% in 1994) follows:

(In thousands)                                        1996      1995      1994
                                                      ----      ----      ----


Tax at U.S. Federal statutory rate                $(14,522)   $12,148   $(2,404)
Net operating losses (utilized) not utilized        11,257     (7,079)     (611)
In-process R&D costs relating to BIT, Inc. 
     acquisition                                     2,724        ---       ---
Nondeductible charges arising from 
     acquisition of PMC                                ---      3,710     4,334
Incremental taxes on foreign earnings                9,406      1,988       ---
Other                                                  893        (35)      193
                                                    ------     ------   -------

Provision for income taxes                          $9,758    $10,732    $1,512
                                                   =======    =======    =======

         Pretax income (loss) from foreign  operations was  $23,044,000 in 1996,
$14,298,000 in 1995 and  $(6,700,000) in 1994.

         As of December 31, 1996, the Company has federal foreign tax credits of
$1,200,000  that  expire in 1999 and 2000,  if not  utilized.  The  Company  has
$6,902,000 of federal net operating  losses  acquired from Bit, Inc.  which will
expire  in 2011.  Utilization  of these  net  operating  losses  is  subject  to
substantial  limitation  due to  ownership  change  limitations  provided by the
Internal  Revenue Code of 1986.  The Company has state  research and  investment
credit carryforwards of $2,025,000 that expire beginning in 2002.
<PAGE>
         Significant  components  of  the  Company's  deferred  tax  assets  and
liabilities  as of December 31, 1996 are as follows:
(In thousands)
                                                           1996          1995
                                                           ----          ----

Deferred tax assets:
    Operating loss carryforwards                         $2,416          $175
    Credit carryforwards                                  2,436         4,115
    Inventory valuation                                   4,638         4,637
    Restructuring and other charges                      27,662         2,954
                                                         ------         -----

    Total deferred tax assets                            37,152        11,881
    Valuation allowance                                 (35,353)       (8,929)
                                                       --------       -------

    Total net deferred tax assets                        $1,799        $2,952
                                                        -------        ------

Deferred tax liabilities:
    Depreciation                                        $(2,143)      $(2,176)
   Capitalized technology                                  (598)         (726)
   Deferred income                                          ---        (2,229)
                                                        -------       -------

    Total deferred tax liabilities                       (2,741)       (5,131)
                                                       --------       -------


Total net deferred taxes                                  $(942)      $(2,179)
                                                         ======      ========


         During  1996,  the  valuation   allowance  increased  by  approximately
$26,424,000.  During 1995, the valuation  allowance  decreased by  approximately
$5,800,000.  During 1994, the valuation allowance increased by $93,000.

<PAGE>
NOTE 9.  Related Parties

         The Company sold  $18,936,000,  $46,074,000 and $20,622,000 of products
in 1996, 1995 and 1994, respectively,  to Apple Computer with whom a director of
the Company was affiliated.  Outstanding  amounts receivable from Apple Computer
were  $1,733,000  and  $8,827,000  at December 31, 1996 and 1995,  respectively.
During the second quarter of 1996, an officer of Cisco Systems,  Inc.  ("Cisco")
joined the Company's  Board. In 1996, the Company sold $6,584,000 of products to
Cisco.  Outstanding  accounts  receivable from Cisco were $1,929,000 at December
31, 1996.

NOTE 10.  Segment Information

         The Company operates in one industry segment, which is the development,
production and sale of high performance  integrated circuit system solutions for
the communications markets and the global information network.

         In 1996,  1995, and 1994 sales to Apple Computer  represented 10%, 24%,
and 20% of net revenues, respectively.

         Export sales consist of direct sales and sales by the  Company's  sales
subsidiaries.   U.S.  export  revenue  from  shipments  to  Europe   represented
$23,684,000, $23,877,000, and $22,364,000 in 1996, 1995, and 1994, respectively,
while U.S.  export  revenue  from  shipments  to the Far East were  $59,337,000,
$38,533,000,  and  $13,500,000  of  net  revenues,  respectively,  during  these
periods.

         Geographic financial information is as follows:

                                                 1996         1995         1994
                                                 ----         ----         ----
Net sales to unaffiliated customers:
    United States                            $125,493     $149,326      $96,484
    Canada                                     62,878       39,398        8,280
                                               ------       ------       ------
         Total net sales                     $188,371     $188,724     $104,764
                                            =========    =========     ========


Operating income (loss):
    United States                            $(63,976)     $10,382      $(6,319)
    Canada                                     24,905       17,129        2,705
                                               ------       ------       ------
         Total operating income/(loss)       $(39,071)     $27,511      $(3,614)
                                            =========    =========     ========


Identifiable assets:
    United States                             $53,989     $129,747
    Canada                                     57,510       37,612
    Other                                      18,415       17,501
                                               ------       ------
         Total assets                        $129,914     $184,860
                                            =========    =========

<PAGE>

NOTE 11.  Restructuring

         On September 29, 1996, the Company  recorded  charges of $69,370,000 in
connection with the Company's  decision to exit from the modem chipset  business
and  the  associated  restructuring  of  the  Company's  non-networking  product
operations.  The charges were  recorded in cost of sales as an  inventory  write
down ($4,700,000) and as restructure costs in operating expenses  ($64,670,000).
The elements of the total charge as of September  29, 1996 and December 31, 1996
are as follows:
<TABLE>
<CAPTION>

                                                         Restructuring                                    Restructuring
                                                            Charge                                          Reserve
                                                         September 29,     Write-Down         Cash        December 31,
                                                             1996          of Assets         Outlay           1996
(In Millions)                                                ----          ---------        --------          ----
                                                                                            
<S>                                                       <C>            <C>             <C>             <C>
Write down of inventories to net realizable value          $23,000        $(23,000)        $   ---         $   ---
Employee termination benefits                                6,985             ---          (2,411)          4,574
Loss on supplier commitments and write off                                                   
     of prepaid expenses                                     9,908            (905)           (409)          8,594
Write down of excess fixed assets and assets                                                  
    related to capacity commitments                         16,580         (16,580)            ---             ---
Provision for price protection and product returns           5,047          (5,047)            ---             ---
Excess facility costs                                        3,411             ---            (408)          3,003
Write down of goodwill related to Company's BV                                               
      subsidiary in Holland                                  2,459          (2,459)            ---             ---
Severance and closure costs related to Europe                1,980             ---          (1,397)            583
                                                           -------          ------         -------         -------
                                                           $69,370        $(47,991)        $(4,625)        $16,754
                                                          ========        ========        ========        ========
</TABLE>

         The  Company  ceased   manufacturing  its  modem  chipset  products  in
September  1996  and  expects  to  complete  the  shut  down  of  the  remaining
non-networking  operations  in San  Jose by the  middle  of  1997.  No sale  was
anticipated  in accounting for the  restructuring.  The Company will continue to
manufacture  certain of its multimedia  products in order to utilize  components
either on-hand or under firm committed orders. As the non-networking  operations
wind down,  related  work  forces  have been and will  continue  to be  reduced.
Termination  benefits  for  approximately  245  employees  associated  with  the
Company's  non-networking  operations  have  been and will be paid as  employees
reach  their  termination  dates,  between  November  1996 and July 1997.  As of
December 31, 1996, 118 employees employed as of the date of the restructuring in
the Company's non-networking  operations had reached their termination dates and
have left the Company as planned in the restructuring. 127 employees employed as
of the date of the restructuring in the Company's non-networking operations will
reach their termination dates per the restructure plan during 1997.

         As a result of its exit from the modem  chipset  business,  the Company
identified  incremental  impairments in the carrying value of its non-networking
inventory and losses on supplier  commitments arising directly from the decision
to  stop  manufacturing  modem  chipset  inventory.  Additionally,  the  Company
identified  certain prepaid expenses and other commitments that, due to the exit
from the modem  chipset and other  non-networking  operations,  will  provide no
future economic benefit to the Company.

         In  conjunction  with the decision to exit the modem chipset  business,
the Company is subject to incremental  pricing pressure and potential returns of
modem chipset products.  An estimate of the potential impact of price protection
and product returns has been included in the restructuring charge.
<PAGE>

         In  connection   with  its  decision  to   discontinue   non-networking
operations,  the  Company  evaluated  the  ongoing  value  of the  fixed  assets
associated  with  these  operations.  Based  on  this  evaluation,  the  Company
identified  approximately $2.1 million of non-networking  property and equipment
that will continue to be utilized in the Company's  networking  operations.  The
remaining  non-networking  property  and  equipment,  with a carrying  amount of
approximately  $11.6  million,   consists  primarily  of  testers,   engineering
workstations,  and computer  equipment.  A small portion of these assets will be
utilized only during the wind down of the non-networking  operations through the
middle of 1997.  The  majority  of these  assets  will not be  utilized  and the
Company is attempting to dispose of such assets. As a result, in accordance with
Financial  Accounting Standard No. 121, the Company determined that these assets
were  impaired  and  wrote  them down by  approximately  $9.7  million  to their
estimated fair value. Fair value was based on estimated net recoverable  salvage
value of assets held for disposal.  Based upon net  undiscounted  estimated cash
flows to be  generated  by these  assets  no  impairment  of assets  which  will
continue to be utilized was identified.

         Prior to the Company's decision to exit from the modem chipset business
and the associated  restructure of its  non-networking  operations,  the Company
entered into  noncancellable  capital  leases for equipment to be used by one of
the Company's outside  foundries in exchange for guaranteed  capacity and future
pricing  considerations.  Due to the Company's  exit and  restructure  plan, the
Company  estimates  that it will not be able to  fully  utilize  the  contracted
capacity  and  pricing  considerations.  The  Company's  analysis  of cash flows
expected from the reduced  capacity  utilization at this foundry while incurring
the full  contracted  capital  leases  obligation,  resulted in an impairment of
approximately $6.9 million of the Company's assets.

         The portion of the charge related to excess  facility  costs  primarily
consists  of  amounts  to  be  incurred  by  the  Company  under  a  seven  year
noncancelable  operating  lease  expiring in 2003. The Company plans to occupy a
portion of the building  through June 1997. After June 1997, the Company expects
that the building will be vacant.  The Company is actively  trying to sublet the
building;  however,  it is  expected  that a  sublessor  may not be located  for
approximately  eighteen months.  As a result,  the charge consists of the unused
percentage of the lease  obligations  from  September 1996 through June 1997 and
100% of the lease  obligations  for eighteen months  thereafter,  and associated
costs for operating and maintaining the facilities.

         The  Company's  operations  in  Europe  were  closed as a result of the
decision to exit the modem  chipset  business.  Costs related to the shutdown of
the European  subsidiaries,  including  severance payments and excess facilities
costs, are included in the restructuring charge. Additionally, the restructuring
charge includes a write down of the remaining  goodwill related to the Company's
Holland operation.

         Cash  expenditures   associated  with  the  restructuring   plan,  were
approximately  $4.6  million in 1996.  It is expected  that  approximately  $5.7
million of cash expenditures  related to the restructuring will occur during the
first half of 1997.  Subsequent cash  expenditures  related  primarily to leases
accrued in the restructuring will be approximately $11.1 million.

ITEM 9.  Changes  in  and  Disagreements  with  Accountants  on  Accounting  and
Financial Disclosure.

         Not applicable.
<PAGE>
                                    PART III

ITEM 10. Directors and Executive Officers of the Registrant

         The  information  concerning the Company's  directors  required by this
Item is  incorporated by reference to the Company's Proxy Statement for its 1997
Annual Meeting of  Shareholders  ("Proxy  Statement").  The following sets forth
information regarding executive officers of the Company as of February 28, 1997.
<TABLE>
<CAPTION>

        Name                       Age                                Position
- ------------------                 ---       --------------------------------------------------------------
<S>                                <C>      <C>
James V. Diller                     61       Chief Executive Officer and Chairman of the Board of Directors
Greg Aasen                          42       Chief Operating Officer and Secretary of PMC-Sierra, Inc.
Robert L. Bailey                    39       President and Chief Executive Officer of PMC-Sierra, Inc.
Glenn C. Jones                      51       Senior Vice President, Finance and Chief Financial Officer
</TABLE>

         Officers serve at the  discretion of the Board of Directors.  There are
no family relationships between any of the directors or officers of the Company.

         Mr.  Diller is a founder of the  Company  and has served as  President,
Chief Executive  Officer and a Director since its formation in December 1983. He
was Sierra's  President  from  formation  until July 1993.  In July 1993, he was
named as the Chairman of the  Company's  Board of  Directors.  He also served as
Chief Financial Officer of the Company from its formation until July 1987 and as
Acting Chief  Financial  Officer of the Company from  September 1993 to February
1994. Prior to founding the Company,  he was employed by National  Semiconductor
for 15 years,  most  recently  as Vice  President  of MOS  Memory and Custom MOS
Products  from May 1981 to December  1983.  Other  positions  held by Mr. Diller
while at National  Semiconductor include Vice President of the Consumer Products
Division,  Managing Director of Southeast Asian Manufacturing Operations,  Group
Director of Linear Circuits and Managing  Director of European  Operations.  Mr.
Diller is a director of Elantec Semiconductor, a linear semiconductor company.

         Mr. Aasen is a founder of PMC-Sierra,  Inc. and has served as its Chief
Operating  Officer and Secretary since its formation in June 1992. He has served
as a director of PMC-Sierra, Inc. since August 1994. Prior to joining PMC-Sierra
Inc., Mr. Aasen was a General Manager of PMC, a division of MPR Teltech, Ltd.

         Mr.  Bailey  has  served as  President,  Chief  Executive  Officer  and
Director of PMC-Sierra,  Inc. since December 1993. Prior to joining  PMC-Sierra,
Inc.,  Mr.  Bailey was  employed  by  AT&T-Microelectronics  from August 1989 to
November 1993 where he served as Vice  President of  Integrated  Microperipheral
Products.  Mr.  Bailey  became a Sierra  director in October  1996. He is also a
director  of  Teltone  Corporation,  a  designer  and  manufacturer  of  telecom
products.

         Mr. Jones joined the Company in February 1994 as Senior Vice President,
Finance  and Chief  Financial  Officer.  Prior to joining  the  Company,  he was
employed by Sybase, Inc., a database software firm, as Vice President, Strategic
Ventures from September  1992 through  February 1994. He was employed from March
1992 through  September  1992 by Gain  Technology,  Inc., a multimedia  software
development  firm,  as its Vice  President  of  Operations  and Chief  Financial
Officer. Prior to March 1992, Mr. Jones was employed by Metaphor Computer, Inc.,
a  computer  systems  manufacturer,  for  over  eight  years,  where in his last
position,  he served as  Executive  Vice  President,  General  Manager and Chief
Financial Officer.
<PAGE>
ITEM 11.  Executive Compensation.

         The  information  required by this Item is incorporated by reference to
the Company's Proxy Statement.

ITEM 12.  Security Ownership of Certain Beneficial Owners and Management.

         The  information  required by this Item is incorporated by reference to
the Company's Proxy Statement.

ITEM 13.  Certain Relationships and Related Transactions.

         The  information  required by this Item is incorporated by reference to
the Company's Proxy Statement.
<PAGE>


                                     PART IV

ITEM 14.  Exhibits, Financial Statement Schedules and Reports on Form 8-K.

                   (a)     1.       Consolidated Financial Statements

         The financial  statements  (including the notes thereto)  listed in the
accompanying index to financial statements and financial statement schedules are
filed within this Annual Report on Form 10-K.

                  2.       Financial Statement Schedules

         The financial  statement schedule listed on Page 28 in the accompanying
index to financial  statements and financial  statement schedule is filed within
this Annual Report on Form 10-K.

                  3.       Exhibits

         The  exhibits  listed  under  Item 14(c) are filed as part of this Form
10-K Annual Report.

         (b)      Reports on Form 8-K

                  No reports on Form 8-K  were filed by  the Company  during the
 fourth  fiscal  quarter ended December 31, 1996.
<PAGE>
<TABLE>
<CAPTION>


         (c)  Exhibits
 
              Exhibit                            Description                                                       Page
              Number                                                                                              Number
              ------- --------------------------------------------------------------------                       --------
              <S>   <C>                                                                                          <C>    
               2.1    Exchange Agreement dated September 2,                                                        (D)
                        1994 between Sierra and PMC.                                                            
               2.2    Amended and Restated Shareholders                                                            (D)
                        Agreement dated September 2, 1994                                                       
                        among the Shareholders of PMC-Sierra, Inc.                                              
               2.3    Amendment to Exchange Agreement effective August 9, 1995                                     (G)
               3.1    Restated Articles of Incorporation, as amended                                               (H)
               3.3    Bylaws, as amended                                                                           (A)
               4.1    Specimen of Common Stock Certificate                                                         (A)
               4.3    Terms of PMC-Sierra, Inc. Special Shares                                                     (E)
               4.4    Silicon Valley Bank Business Loan Agreement and Promissory Note, each dated               
                        November 29, 1990 and Security Agreement dated February 22, 1990.                          (J)
               4.4B   Amendment dated December 29, 1996 to the Silicon Valley Bank Business Loan
                        Agreement and Promissory Note, dated November 29, 1990 and Security Agreement
                        dated February 22, 1990                                                                     --
              10.1B   1987 Incentive  Stock Plan, as amended                                                       (C)
              10.2    1991 Employee Stock Purchase plan, as amended                                                (A)
              10.4    Form of Indemnification  Agreement for directors and officers                                (A)
              10.8    Warrants to Purchase Common Stock                                                            (A)
              10.8B   Warrant Purchase Agreement and Warrant to Purchase Shares of Common Stock
                         dated August 28, 1996                                                                      --
              10.9D   Technology License Agreement dated November 18, 1987, as amended                          
                        July 17, 1990                                                                              (A)
              10.11   Net Building Space Lease dated November 1, 1996                                              (I)
              10.14   Compass Design Automation, Inc. Software License Agreement dated                          
                        December 2, 1991*                                                                          (B)
              10.17   1994 Incentive Stock Plan                                                                    (F)
              10.18   Deposit Agreement with Chartered Semiconductor Pte., Ltd.*                                   (K)
              10.18B  Amendment Agreement (No. 1) to Deposit Agreement with                                     
                        Chartered Semiconductor Pte. Ltd.**                                                         --
              10.19   Option Agreement among Sierra Semiconductor Corporation, PMC-Sierra, Inc.                 
                        and Taiwan Semiconductor Manufacturing Corporation**                                        --
              10.20   Net Building Lease (PMC-Sierra, Inc.) dated May 15, 1996                                      
              11.1    Calculation of earnings per share                                                             
              22.1    Subsidiaries                                                                                  
              23.1    Consent of Ernst & Young LLP, Independent Auditors  
              24.1    Power of Attorney    
</TABLE>      
<PAGE>

  *    Confidential treatment has been granted as to a portion of this exhibit.
 **    Confidential treatment has been requested as to portions of this exhibit.
 (A)   Incorporated  by  reference  from  the  same-numbered exhibit filed  with
         the  Registrant's Registration Statement on Form S-1 (No. 33-39406).
 (B)   Incorporated   by  reference  from  the   same-numbered
         exhibit  filed with the  Registrant's  Form 10-K Annual
         Report for the fiscal year ended December 29, 1991.
 (C)   Incorporated   by  reference  from  the   same-numbered
         exhibit  filed with the  Registrant's  Form 10-K Annual
         Report for the fiscal year ended January 3, 1993.
 (D)   Incorporated   by  reference  from  the   same-numbered
         exhibit filed with the  Registrant's  Current Report on
         Form 8-K, filed on September 16, 1994, as amended.
 (E)   Incorporated  by reference from exhibit 4 of the  Schedule 13-D  filed on
         November 2,  1994 by GTE Corporation.
 (F)   Incorporated   by  reference  from  the  same  numbered
         exhibit  filed with the  Registrant's  Form 10-K Annual
       report for the fiscal year ended January 2, 1994.
 (G)   Incorporated  by reference  from exhibit 2.1 filed with
         Registrant's  Current  Report  on Form  8-K,  filed  on
         September 6, 1995, as amended on October 6, 1995.
 (H)   Incorporated by reference from exhibit 3.1 filed with the Registrant's
         Form 10-Q for the quarter ended September 29, 1996.
 (I)   Incorporated by reference from the same numbered exhibit filed with 
         Registrant's Form 10-Q for the quarter ended June 30, 1996.
 (J)   Incorporated by reference from the same numbered exhibit filed with the 
         Registrant's Registration Statement on Form S-1 (No. 33-39406).
 (K)   Incorporated by reference from the same numbered exhibit filed with the 
         Registrant's Form 10-K Annual Report for the fiscal year ended 
         December 31, 1995.

<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.

                                         SIERRA SEMICONDUCTOR
                                         CORPORATION
                                        (Registrant)

Date:   April 11, 1997                  /s/ James V. Diller
                                        ----------------------------------------
                                        James V. Diller, Chief Executive Officer


                                POWER OF ATTORNEY
       KNOW ALL  PERSONS BY THESE  PRESENTS,  that each person  whose  signature
appears  below  constitutes  and  appoints  James V.  Diller and Glenn C. Jones,
jointly  and  severally,   his   attorneys-in-fact,   each  with  the  power  of
substitution,  for him in any and all capacities, to sign any amendments to this
Report on Form  10-K,  and to file the same,  with  exhibits  thereto  and other
documents in connection therewith,  with the Securities and Exchange Commission,
hereby ratifying and confirming all that each of said attorneys-in-fact,  or his
substitute or substitutes, may or cause to be done by virtue hereof.

       Pursuant to the requirements of the Securities Exchange Act of 1934, this
Annual  Report has been signed below by the  following  persons on behalf of the
Registrant and in the capacities and on the dates indicated.
        Name                          Title                            Date


/s/ James V. Diller       Chairman of the Board,                  April 11, 1997
- -----------------------   Chief Executive Officer and Director    
James V. Diller          (Principal Executive Officer)

/s/ Glenn C. Jones        Senior Vice President, Finance and      April 11, 1997
- -----------------------   Chief Financial Officer 
Glenn C. Jones           (Principal Financial Officer)

/s/ Michael L. Dionne                                             April 11, 1997
- -----------------------   Director
Michael L. Dionne

/s/ Frank Marshall                                                April 11, 1997
- -----------------------   Director
Frank Marshall            


/s/ Robert Bailey                                                 April 11, 1997
- -----------------------   Director
Robert Bailey


/s/ Alexandre Balkanski                                           April 11, 1997
- -----------------------   Director
Alexandre Balkanski       


<PAGE>
<TABLE>
<CAPTION>


                                           INDEX TO EXHIBITS

   Exhibit                                   Description                                              Page
    Number                                                                                           Number
  --------     -----------------------------------------------------------------------               ------
   <S>         <C>                                                                                    <C>  
     4.4B       Amendment dated December 29, 1996 to Silicon Valley Bank Business 
                  Loan Agreement and Promissory Note and Security Agreement.                           62
    10.8        Warrant Purchase Agreement and Warrant to Purchase shares of Common Stock
                  dated August 28, 1996.                                                               66
    10.18       Amendment Agreement (No.1) to Deposit Agreement with Chartered Semiconductor 
                  Pte. Ltd.**                                                                          82
    10.19       Option Agreement among Sierra Semiconductor, PMC-Sierra, Inc. and Taiwan 
                  Semiconductor Manufacturing Corporation as amended**                                 95
    10.20       Net Building Lease (PMC-Sierra, Inc.) dated May 15, 1996                              109
    11.1        Calculation of Earnings Per Share                                                      51
    22.1        List of Subsidiaries                                                                   52
    23.1        Consent of Ernst & Young LLP, Independent Auditors


         **    Confidential treatment has been requested as to portions of this exhibit.

</TABLE>
<PAGE>
<TABLE>
<CAPTION>


Exhibit 11.1                              SIERRA SEMICONDUCTOR CORPORATION
                                        CALCULATION OF EARNINGS PER SHARE (1)
                                      (in thousands, except per share amounts)



                                                                                  December 31,

                                                                         1996             1995             1994
                                                                         ----             ----             ----

<S>                                                                 <C>               <C>              <C>   

Income (loss) from continuing operations                             $(48,150)         $23,976          $(7,916)
Loss from discontinued operations                                         ---          (22,497)            (666)
                                                                      -------          -------          -------
Net income (loss)                                                    $(48,150)           1,479           (8,582)

Adjustments to net income (loss):
     Accretion of convertible, redeemable preferred stock                 ---               (1)             (16)
                                                                      -------          -------          -------
Adjusted net income (loss)                                           $(48,150)          $1,478          $(8,598)
                                                                    =========        =========          ========

Weighted average common shares outstanding                             29,719           27,018           22,030

Common stock equivalents                                                  ---            1,602              ---

Shares used in calculation of net income (loss) per share              29,719           28,620           22,030

Income (loss) from continuing operations per share                     $(1.62)        $   0.84          $ (0.36)
Loss from discontinued operations per share                          $    ---         $  (0.79)         $ (0.03)
                                                                      -------          -------          -------
Net income (loss) per share                                            $(1.62)        $   0.05          $ (0.39)
                                                                    =========        =========          ========
<FN>

(1)  Share and per share information has been adjusted for a 2 for 1 stock split effective October 5, 1995
</FN>
</TABLE>


<PAGE>


                 Exhibit 22.1 SIERRA SEMICONDUCTOR CORPORATION
                              LIST OF SUBSIDIARIES


                                 Subsidiaries of
                        Sierra Semiconductor Corporation


         1.  PMC-Sierra,  Inc.,  organized  under the laws of British  Columbia,
Canada, doing business only under its official name.

         2. Prometheus  Products,  Inc., organized under the laws of California,
doing business only under its official name.

         3.  Sierra   Semiconductor  B.V.,  organized  under  the  laws  of  the
Netherlands, doing business only under its official name.

         4.  Chartered  Sierra  Semiconductor,  organized  under the laws of the
Republic of Singapore, doing business only under its official name.

         5.  Sierra  Semiconductor  Canada,  Inc.  organized  under  the laws of
British Columbia, Canada, doing business only under its official name.

         6. Sierra  Semiconductor,  Ltd., organized under the laws of the United
Kingdom, doing business only under its official name.

         7.  Sierra  Semiconductor  GmbH,  organized  under the laws of Germany,
doing business only under its official name.

         8. Sierra  Semiconductor  Srl, organized under the laws of Italy, doing
business only under its official name.

         9.  PMC-Sierra  Portland,  Inc.,  organized under the laws of Delaware,
doing business only under its official name.

<PAGE>


Exhibit 23.1
               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS


     We consent to the incorporation by reference in the Registration Statements
(Form S-3 Nos. 33-86930, 33-90393, 33-96620, 33-97490 and 333-15519), and in the
Registration Statements (Form S-8 Nos. 33-41027, 33-80988, 333-13387,  33-80992,
33-94790,  333-13359,  and  333-13357)  pertaining  to the 1991  Employee  Stock
Purchase Plan, 1994 Incentive Stock Plan, and PMC-Sierra,  Inc.  (Portland) 1996
Stock  Option  Plan  of  Sierra  Semiconductor  Corporation  and in the  related
Prospectuses,  of our  report  dated  January  22,  1997,  with  respect  to the
consolidated   financial   statements  and  schedule  of  Sierra   Semiconductor
Corporation  included  in this  Annual  Report  (Form  10-K) for the year  ended
December 31, 1996.




San Jose, California                                        /s/ERNST & YOUNG LLP
April 10, 1997

<PAGE>
<TABLE>
<CAPTION>

                                                           S-1
                                     SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

                                      Years ended December 31, 1996, 1995 and 1994
                                                     (in thousands)

                                           Additions          Additions
  Allowance for          Balance at        Charged to          Charged
    Doubtful             Beginning         Costs and           to Other                              Balance at
    Accounts              of Year           Expenses           Accounts           Write-offs        End of Year
  ------------           ---------         ---------          ---------           ----------        -----------

<S>  <C>                  <C>                <C>               <C>                  <C>               <C>   
      1996                 $1,081             $666              $ ---                $905              $  842
      1995                 $1,648             $ 49              $ ---                $616              $1,081
      1994                 $  734             $871               $148 (1)            $105              $1,648
<FN>

(1) Represents  amounts  acquired in the  acquisition of PMC charged to goodwill
and other intangible assets.
</FN>
</TABLE>

<TABLE>
<CAPTION>
                                                   1993 Restructure
                                                   ----------------

                                           Additions          Additions
    Accrued              Balance at        Charged to          Charged
  Restructure            Beginning         Costs and           to Other                             Balance at
     Costs                of Year           Expenses           Accounts            Payments         End of Year
  ------------           ---------         ---------          ---------           ----------        -----------
<S>  <C>                  <C>              <C>                 <C>                <C>                 <C>   
      1996                 $  373           $  ---              $ ---              $  ---              $  373
      1995                 $1,150           $  ---              $ ---              $  777              $  373
      1994                 $6,903          $(1,559) (2)         $ ---              $4,194              $1,150
<FN>

(2)  Represents reversal of restructuring and other charges.
</FN>
</TABLE>

<TABLE>
<CAPTION>

                                                   1996 Restructure
                                                   ----------------

                                                                                Accruals
                                         Additions          Additions           Reclassed                          
    Accrued           Balance at         Charged to         Charged             to Other
  Restructure         Beginning          Costs and          to Other           Restructure                           Balance at
     Costs             of Year           Expenses           Accounts             Accounts           Payments        End of Year
   ------------        ---------         ---------          ---------           ----------        -----------       -----------
<S>  <C>               <C>               <C>               <C>                   <C>                 <C>              <C>

      1996              $   ---           $28,154           $    ---              $(6,775)            $4,625           $16,754
      1995              $   ---           $   ---           $    ---              $   ---             $  ---           $   ---
      1994              $   ---           $   ---           $    ---              $   ---             $  ---           $   ---
 
</TABLE>

<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
     (Replace this text with the legend)
</LEGEND>
<CIK>                         0000767920
<NAME>                        Sierra Semiconductor Corp.
<MULTIPLIER>                                     1,000
       
<CAPTION>

<S>                                           <C>
<PERIOD-TYPE>                                  12-MOS
<FISCAL-YEAR-END>                              DEC-29-1996
<PERIOD-START>                                 JAN-01-1996
<PERIOD-END>                                   DEC-29-1996
<CASH>                                          35,038
<SECURITIES>                                     7,024
<RECEIVABLES>                                   13,907
<ALLOWANCES>                                       842
<INVENTORY>                                      9,232
<CURRENT-ASSETS>                                68,305
<PP&E>                                          16,678
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                                 129,914
<CURRENT-LIABILITIES>                           47,867
<BONDS>                                              0
                                0
                                          0
<COMMON>                                       135,320
<OTHER-SE>                                           0
<TOTAL-LIABILITY-AND-EQUITY>                   129,914
<SALES>                                        188,371
<TOTAL-REVENUES>                               188,371
<CGS>                                           94,948
<TOTAL-COSTS>                                   94,948
<OTHER-EXPENSES>                               132,494
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                (679)
<INCOME-PRETAX>                                (38,392)
<INCOME-TAX>                                     9,758
<INCOME-CONTINUING>                            (48,150)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (48,150)
<EPS-PRIMARY>                                    (1.62)
<EPS-DILUTED>                                    (1.62)
        


</TABLE>

                                       
                           LOAN MODIFICATION AGREEMENT

         This Loan Modification Agreement is entered into as of January 17, 1997
and is effective as of December 29, 1996,  by and between  Sierra  Semiconductor
Corporation  ("Borrower")  whose address is 2222 Qume Drive, San Jose, CA 95131,
and Silicon  Valley Bank  ("Lender")  whose address is 3003 Tasman Drive,  Santa
Clara, CA 95054.

1. DESCRIPTION OF EXISTING  INDEBTEDNESS:  Among other indebtedness which may be
owing by Borrower to Lender,  Borrower is indebted to Lender  pursuant to, among
other  documents,  a  Promissory  Note,  dated June 25,  1991,  in the  original
principal amount of Five Million and 00/100 Dollars  ($5,000,000.00)  as amended
from time to time (the "Note" and  sometime  referred to as the  "Line"),  and a
Promissory Note,  dated May 18, 1994, in the original  principal amount of Three
Million and 00/100  Dollars  ($3,000,000.00)  as amended  from time to time (the
"Term  Loan").  Hereinafter,  the Note and the Term Loan  shall be  referred  to
collectively as, the "Notes".  Pursuant to a Loan Modification Agreement,  dated
July 1, 1996,  the principal  amount of the Line was increased to Twelve Million
Five Hundred Thousand and 00/100 Dollars  ($12,500,000.00).  The Notes, together
with other promissory  notes from Borrower to Lender,  are governed by the terms
of a Business  Loan  Agreement,  dated June 25, 1991,  as such  agreement may be
amended from time to time,  between Borrower and Lender (the "Loan  Agreement").
Defined terms used but not otherwise defined herein shall have the same meanings
as in the Loan Agreement.

Hereinafter,  all indebtedness  owing by Borrower to Lender shall be referred to
as the "Indebtedness".

2. In connection with the repayment of the Indebtedness, Borrower has agreed not
to sell, transfer,  assign,  mortgage,  pledge, lease, grant a security interest
in, or encumber any of Borrower's  assets without Lender's prior written consent
(which  consent  shall not be  unreasonably  withheld)  (the  "Non-hypothecation
Agreement").  Concurrently  herewith,  Borrower  shall  execute an Assignment of
Deposit Account agreement in favor of Lender against Borrower's specific Silicon
Valley Bank Certificates of Deposit.

Hereinafter,  the  above-described  security documents and guaranties,  together
with  all  other  documents  securing  repayment  of the  Indebtedness  shall be
referred to as the "Security  Documents".  Hereinafter,  the Security Documents,
together with all other documents  evidencing or securing the Indebtedness shall
be referred to as the "Existing Loan Documents".

3.       DESCRIPTION OF CHANGE IN TERMS.

         A.       Modification(s) to the Note.

                  1.       The principal  amount of the Note is hereby decreased
                           to Ten Million and 00/100 Dollars($10,000,000.00).

                  2.       The paragraph entitled "Payment" is hereby amended in
                           its entirety to read as follows:

                           From  the  date  hereof   until  July  1,  1997  (the
                           "Maturity  Date"),   Borrower  may  request  Advances
                           hereunder  on  a  revolving  basis.   Prior  to  each
                           Advance,  Borrower  shall comply with the  Conditions
                           Precedent  to Each  Advance  (as  described  herein).
                           Following  each Advance,  Borrower  shall pay regular
                           monthly  payments of all accrued  unpaid  interest on
                           such  Advance  beginning  February  1,  1997  and all
                           subsequent  interest payments will be due on the same
                           day of each month  thereafter  through the earlier to
                           occur of (i)  repayment  of the  Advance  or (ii) the
                           Maturity Date. The outstanding  principal  balance of
                           all Advances  plus all accrued  interest not yet paid
                           will be due and payable on the Maturity Date.

                           Interest on this Note is computed on a 365/360 simple
                           interest basis; that is, by applying the ratio of the
                           annual  interest  rate  over  a  year  of  360  days,
                           multiplied  by  the  outstanding  principal  balance,
                           multiplied by the actual number of days the principal
                           balance is  outstanding.  Borrower will pay Lender at
                           Lender's  address  shown above or at such other place
                           as Lender may designate in writing.  Unless otherwise
                           agreed or required by applicable  law,  payments will
                           be applied first to accrued unpaid interest,  then to
                           principal,  and any  remaining  amount to any  unpaid
                           collection costs and late charges.

                           Whenever  Borrower desires an Advance,  Borrower will
                           notify Lender by facsimile  transmission or telephone
                           no later than 3:00 p.m. Pacific time, on the business
                           day  that  the  Advance  is to  be  made.  Each  such
                           notification   shall  be  promptly   confirmed  by  a
                           Payment/Advance  Form in  substantially  the  form of
                           Exhibit  A  hereto.  In  addition  to the  foregoing,
                           Borrower shall comply with the  Conditions  Precedent
                           to Each Advance.

                  3.       The    following   paragraph   entitled   "Conditions
                           Precedent  to Each  Advance"  is hereby  incorporated
                           to read as follows:

                           At any  time  from the date  hereof  through  July 1,
                           1997,   Borrower  may  request  advances   (including
                           issuing Standby Letters of Credit, Exchange Contracts
                           and any other extensions of credit for the benefit of
                           the Borrower)  (each an "Advance"  and  collectively,
                           the  "Advances")  from Lender in an aggregate  amount
                           not  to  exceed  Ten  Million   and  00/100   Dollars
                           ($10,000,000.00).  To secure the  Advances,  Borrower
                           shall  pledge to Lender  cash to be held in a Silicon
                           Valley Bank Certificate of Deposit in an amount equal
                           to one hundred percent (100%) of each Advance,  which
                           pledge  shall  remain  in  effect  until   Borrower's
                           obligations  under  the  Note  have  been  satisfied.
                           Borrower  agrees  to  execute  any and all  documents
                           necessary  to  perfect  Lender's   security  interest
                           therein.

                  4.       The paragraph  entitled  "Variable Interest  Rate" is
                           hereby amended in its entirety to read as follows:

                           VARIABLE  INTEREST  RATE.  The  interest  rate  to be
                           applied  to each  Advance  under  this Note  shall be
                           based on the rate payable under each  Certificate  of
                           Deposit pledged to Lender to secure each Advance (the
                           "Index").  The Index is not  necessarily  the  lowest
                           rate  charged  by  Lender  on its loans and is set by
                           Lender  in its  sole  discretion.  Lender  will  tell
                           Borrower the current  Index rate of each Advance upon
                           Borrower's request.  Borrower understands that Lender
                           may make  loans  based on  other  rates as well.  The
                           interest  rate  change will not occur more often than
                           each time each Index is  adjusted  by Silicon  Valley
                           Bank.  The interest  rate to be applied to the unpaid
                           principal  balance  of each  Advance  under this Note
                           will be at a rate of 3.000 percentage point over such
                           Index.   NOTICE:  Under  no  circumstances  will  the
                           interest rate on each Advance under this Note be more
                           than the maximum rate allowed by applicable law.

         B.       Modification(s) to Loan Agreement.

                  1.       The   paragraph  entitled  "Financial  Covenants"  is
                           hereby  amended  to  read,  in its entirety:

                           Borrower  shall  maintain,   on  a  quarterly  basis,
                           minimum  cash  equal  to  three  (3)  times  the then
                           current  outstanding  principal  balance  of the Term
                           Loan.

                  2.       The  paragraph entitled  "Borrowing Base Formula"  is
                           hereby deleted in its entirety.

                  3.       The  paragraph  entitled   "Accounts  Receivable  and
                           Accounts Payable" is hereby deleted in its entirety.

                  4.       The   provision   allowing  Borrower  to   enter into
                           acquisitions   in  the  section   entitled  "Negative
                           Covenants" is amended as follows:

                           Borrower  may  enter  into  acquisitions  with  other
                           companies   provided   the  cash   expended  by  such
                           acquisitions shall not exceed  $1,000,000.00,  in the
                           aggregate.

                  5.       Borrower   shall   deliver   to   Lender,   quarterly
                           Compliance  Certificates  prepared by Borrower within
                           thirty (30) days  (rather than 45 days) after the end
                           of each quarter.

                  7.       The paragraph entitled "Daylight Overdraft" is hereby
                           deleted in its entirety.

                  8.       The  paragraph entitled "Letters of Credit" is hereby
                           amended in its entirety to read as follows:

                           Subject   to  the  terms  and   conditions   of  this
                           Agreement,  Lender  agrees  to  issue  or cause to be
                           issued  Letters of Credit for the account of Borrower
                           in an aggregate face amount not to exceed Ten Million
                           and 00/100  Dollars  ($10,000,000.00)  minus the then
                           outstanding  principal balance of the Note, minus the
                           Foreign  Exchange  Reserve;  provided  that  the face
                           amount of  outstanding  Letters of Credit  (including
                           drawn but  unreimbursed  Letters of Credit) shall not
                           in any case  exceed Ten  Million  and 00/100  Dollars
                           ($10,000,000.00).  provided that Borrower's Letter of
                           Credit  reimbursement  obligation shall be secured by
                           cash on terms defined herein and in the Assignment of
                           Deposit Account agreement of even date herewith. Each
                           such  Letter of Credit  shall have an expiry  date no
                           later than one  hundred  eighty  (180) days after the
                           maturity date of the Note. All such Letters of Credit
                           shall be, in form and substance, acceptable to Lender
                           in its sole  discretion  and shall be  subject to the
                           terms and  conditions of Lender's form of application
                           and Letter of Credit agreement.

                           Borrower  shall  indemnify,  defend  and hold  Lender
                           harmless from any loss,  cost,  expense or liability,
                           including, without limitation,  reasonable attorneys'
                           fees,  arising  out  of or  in  connection  with  any
                           Letters of Credit.

                           Borrower  may request  that Lender  issue a Letter of
                           Credit payable in a currency other than United States
                           Dollars.  If a demand  for  payment is made under any
                           such Letter of Credit, Lender shall treat such demand
                           as an Advance to  Borrower of the  equivalent  of the
                           amount  thereof (plus cable charges) in United States
                           currency at the then  prevailing  rate of exchange in
                           San  Francisco,  California,  for sales of that other
                           currency  for cable  transfer to the country of which
                           it is the currency.

                           Upon the issuance of any Letter of Credit  payable in
                           a currency other than United States  Dollars,  Lender
                           shall   create  a  reserve  (the  "Letter  of  Credit
                           Reserve")  under  the  Note  for  Letters  of  Credit
                           against  fluctuations in currency  exchange rates, in
                           an  amount  equal  to ten  percent  (10%) of the face
                           amount of such  Letter of Credit.  The amount of such
                           reserve  may be  amended by Bank from time to time to
                           account for  fluctuations  in the exchange  rate. The
                           availability of funds under the Note shall be reduced
                           by the  amount  of such  reserve  for so long as such
                           Letter of Credit remains outstanding.

                  9.       Notwithstanding   the   foregoing,    the   aggregate
                           outstanding  under the  Note,  the  Foreign  Exchange
                           Reserve and the Letter of Credit  Sublimit  shall not
                           exceed    Ten    Million    and    00/100     Dollars
                           ($10,000,000.00).

         C.       Grant of Security Interest.

                  In consideration of, among other things,  Lender entering into
                  this Loan  Modification  Agreement,  Borrower hereby grants to
                  Lender a security  interest  in specific  Silicon  Valley Bank
                  Certificates  of Deposit as  referenced  in the  Assignment of
                  Deposit Account agreement executed concurrently herewith.

                  Borrower acknowledges that Lender has given full new value for
                  Borrower's pledge of the Certificates of Deposit, as described
                  herein, such new value being Lender's agreement to release its
                  interest in the  Non-hypothecation  Agreement between Borrower
                  and Lender.

4. CONSISTENT  CHANGES. The Existing Loan  Documents are hereby amended wherever
necessary to reflect the changes described above.

5. PAYMENT OF LOAN FEE. Borrower shall pay to Lender a fee in the amount of Five
Thousand and 00/100 Dollars  ($5,000.00) (the "Loan Fee") plus all out-of-pocket
expenses.

6. NO DEFENSES OF BORROWER.  Borrower (and each  guarantor and  pledgor  signing
below) agrees that it has no defenses against the obligations to pay any amounts
under the Indebtedness.

7. CONTINUING VALIDITY.  Borrower (and each guarantor and pledgor signing below)
understands  and agrees that in modifying the existing  Indebtedness,  Lender is
relying upon Borrower's  representations,  warranties,  and  agreements,  as set
forth in the Existing Loan Documents.  Except as expressly  modified pursuant to
this Loan  Modification  Agreement,  the terms of the  Existing  Loan  Documents
remain  unchanged  and  in  full  force  and  effect.   Lender's   agreement  to
modifications to the existing  Indebtedness  pursuant to this Loan  Modification
Agreement in no way shall obligate  Lender to make any future  modifications  to
the Indebtedness. Nothing in this Loan Modification Agreement shall constitute a
satisfaction of the Indebtedness.  It is the intention of Lender and Borrower to
retain as liable  parties all makers and endorsers of Existing  Loan  Documents,
unless the party is expressly released by Lender in writing. No maker, endorser,
or guarantor will be released by virtue of this Loan Modification Agreement. The
terms of this paragraph apply not only to this Loan Modification Agreement,  but
also to all subsequent loan modification agreements.


<PAGE>


8. CONDITIONS. The effectiveness of this Loan Modification Agreement is December
29, 1996 and is conditioned upon Borrower's payment of the Loan Fee and delivery
of, among other things, an executed Assignment of Deposit Account agreement.

         This Loan  Modification  Agreement  is  executed  as of the date  first
written above.

Borrower:                                    Lender:

SIERRA SEMICONDUCTOR CORPORATION             SILICON VALLEY BANK


By:/s/ Glenn C. Jones                         By:
- --------------------------------             ---------------------------------
Name:  Glenn C. Jones                         Name:
- --------------------------------             ---------------------------------
Title: Senior V.P. Finance - CFO              Title:
- --------------------------------             ---------------------------------

HAMBRECHT & QUIST LLC


                                                             ONE BUSH STREET
                                                         SAN FRANCISCO, CA 94104
                                                              (415)576-3300







August 28, 1996

Confidential
- ------------

The Board of Directors
Sierra Semiconductor Corporation
2075 North Capitol Ave.
San Jose, CA 95132

Gentlemen:

Hambrecht & Quist LLC  ("Hambrecht  & Quist") has acted as financial  advisor to
Sierra Semiconductor  Corporation ("Sierra" or the "Company") in the analysis of
various strategic and financing alternatives. As compensation for these services
to the Company,  Sierra  agrees to pay to Hambrecht & Quist a warrant to acquire
25,000 shares of common stock of the Company. The warrant shall have an exercise
price equal to $9.25 per share (the closing price of the Company's  common stock
as reported on NASDAQ National Market System on August 28, 1996) and shall be in
the form attached hereto as Exhibit A.

If the foregoing  correctly sets forth the  understanding  between us, please so
indicate on the enclosed  copies of this letter and return one original  copy to
my attention.

                                                      Very truly yours,

                                                      HAMBRECHT & QUIST LLC
                                                      By /s/ James A. Davidson
                                                      James A. Davidson
                                                      Managing Director

Agreed to and accepted:

SIERRA SEMICONDUCTOR CORPORATION

By /s/ James V. Diller
- --------------------------------
James V. Diller
Title:   CEO






                        SAN FRANCISCO * NEW YORK * BOSTON
            MEMBERS NEW YORK STOCK EXCHANGE * AMERICAN STOCK EXCHANGE
                             PACIFIC STOCK EXCHANGE



<PAGE>


                                    EXHIBIT A
                                    ---------
                           WARRANT PURCHASE AGREEMENT
                           --------------------------


         THIS WARRANT PURCHASE  AGREEMENT (the  "Agreement") is made and entered
into as of the  28th  day of  August  1996  by and  among  SIERRA  SEMICONDUCTOR
CORPORATION, a California corporation (the "Company") and HAMBRECHT & QUIST LLC,
a California  limited liability  corporation  ("H&Q").  H&Q shall be referred to
herein as the  "Investor."  As used in this  Agreement,  the term "Shares" shall
mean the shares of Common Stock  issuable from time to time upon exercise of the
Warrant,  as defined in Section  1.1 below,  or upon  exercise  of the rights to
convert the Warrant,  as provided  under Section 7 of the Warrant (the "Right to
Convert Warrant Into Stock").

         The parties hereto agree as follows:

         Article 1.        Sale and Purchase of Warrant; Closing.
                           -------------------------------------
         1.1      Sale and Purchase of Warrant.    The Company agrees to sell to
                  ----------------------------
the Investor and the Investor agrees to purchase from the Company for a purchase
price of $250.00 a warrant in the form attached  hereto as Exhibit B to purchase
25,000 shares of the Company's  Common Stock (the "Common  Stock") at an initial
per share exercise  price of $9.25.  The Warrant will be exercisable at any time
on or before August 28, 2000. The warrant to be issued to the Investor hereunder
shall be refered to as the  "Warrant."  This  warrant  satisfies  the  Company's
obligation  to issue a warrant  under the  August  28,  1996  engagement  letter
between the Company and Investor.

         1.2      Closing.   The issuance of the Warrant shall take place on the
                  -------
date  hereof,  or on such other date as the parties  shall  mutually  agree (the
"Closing").  At the  Closing,  the Company  shall cause to be  delivered  to the
Investor the Warrant  issued in the name of such Investor and Investor shall pay
the Company $250.00.

         Article 2.        Representations and Warranties of the Company.    The
                           ---------------------------------------------
Company hereby agrees and represents and warrants to the Investor as follows:

         2.1      Corporate Status. The Company is a corporation duly organized,
                  ----------------
validly existing, and in good standing under the laws of the State of California
and has all requisite  legal and corporate power and authority to own, lease and
operate its  properties and assets and to carry on its business as now conducted
and as proposed to be  conducted.  The Company is duly  licensed or qualified to
transact  business as a foreign  corporation in each  jurisdiction  in which the
Company  is  required  by  reason of its  activities  or  ownership  or lease of
property to be so qualified and where the failure to be so qualified  would have
a material adverse effect on the business or operations of the Company.

         2.2      Authorization.   All  corporate  action  on the  part  of  the
                  -------------
Company,   its  officers, directors   and   shareholders   necessary   for   the
authorization,  execution,  delivery and  performance  of this Agreement and the
consummation   of  the   transactions   contemplated   hereby,   including   the
authorization,  issuance  and delivery of the Warrant,  the  reservation  of the
Shares issuable upon the exercise thereof,  and the grant of registration rights
to the  Investor,  has been taken.  The person  signing this  Agreement has full
power and authority to enter into this Agreement on behalf of the Company.  When
executed  and  delivered,  this  Agreement  will  constitute a valid and binding
obligation of the Company.

<PAGE>

         2.3      Corporate Power.  The  Company  has all  requisite  legal  and
                  ---------------
corporate  power and authority  to enter into this  Agreement  and all requisite
legal and corporate power and authority to issue and deliver the Warrant and the
Shares  and to carry  out and  perform  its  obligations  under  the  terms  and
conditions of this Agreement and the Warrant.

         2.4      Validity of Warrant.   The Warrant to  be issued and delivered
                  -------------------
pursuant to this Agreement  shall  constitute a valid and binding  obligation of
the  Company.  The Shares have been duly and validly  reserved,  and when issued
shall be duly authorized,  validly issued, fully paid and nonassessable and free
of any liens or encumbrances  except for  restrictions on transfer  provided for
under applicable  federal and state  securities  laws.  During the period within
which the  purchase  right  represented  by the  Warrant may be  exercised,  the
Company  shall at all times have  authorized,  and reserved  for  issuance  upon
exercise of the Warrant or upon exercise of the Conversion  Rights, a sufficient
number of shares of Common Stock to provide for the issuance of the Shares.  The
issuance of such Common  Stock will not be subject to any  preemptive  rights or
rights of first refusal.

         Article 3.        Representations and Warranties of the Investor.   The
                           ----------------------------------------------
 Investor represents and warrants to the Company that:

         3.1      Authorization.  The person  signing this  Agreement  has  full
                  -------------
power and authority to enter into this Agreement on behalf of the Investor. When
executed and delivered,  this Agreement will constitute the Investor's valid and
legally binding obligation.

         3.2      Investment Representations.
                  --------------------------
                  (A) The Investor  understands  that the Warrant and the Shares
have not been  registered  under the  Securities  Act of 1933,  as amended  (the
"Act") and will be issued pursuant to an exemption from  registration  contained
in the Act  based in part upon the  representations  of the  Investor  contained
herein.

                  (B) The  Investor  is  acquiring  the  Warrant  and the Shares
solely for its own account and not as a nominee for any other party and not with
a view toward the resale or distribution thereof.

                  (C) The Investor is a  sophisticated  investor  experienced in
venture capital  investing and able to fend for itself.  The Investor is able to
bear the economic risk of the purchase of the Warrant and the Shares,  including
a complete loss of such Investor's investment. The Investor has been afforded an
opportunity to ask such questions of the Company's officers,  employees, agents,
accountants and representatives  concerning the Company's business,  operations,
financial  condition,  assets,  liabilities and other relevant matters as it has
deemed necessary or desirable.

         Article 4.        Conditions  of  the  Investor's  Obligations  at  the
 Closing.                  -----------------------------------------------------
 ------- The obligation of the Investor  to purchase the  Warrant is  subject to
the fulfillment to its satisfaction,  or its written waiver thereof, prior to or
at the Closing, of each of the following conditions:

         4.1      Representations and  Warranties.    The  representations   and
                  -------------------------------
warranties  of the  Company  contained  in  Article  2 hereof  shall be true and
correct on and as of the Closing.

         4.2      Corporate Action.   All  corporate  action on  the part of the
                  ----------------
Company,   its   officers,   directors  and   stockholders   necessary  for  the
authorization,  execution,  delivery and  performance  of this Agreement and the
consummation of the transactions contemplated hereby shall have been taken.

         4.3      Delivery of Warrant.  The Warrant shall have been delivered to
                  -------------------
 the Investor.

<PAGE>

         4.4      Governmental Consents.    All  permits,  consents,  approvals,
                  ---------------------
orders and authorizations, if any, which the Company is required to obtain from,
and all registrations,  qualifications,  designations,  declarations and filings
which the Company is  required  to make with any  Federal or state  governmental
authority of the United States in  connection  with the  execution,  delivery or
performance of this Agreement, the consummation of the transactions contemplated
hereby or the issuance  and delivery of the Warrant to the Investor  pursuant to
this Agreement,  except  post-sale  filings which may be required under the Blue
Sky laws of any  applicable  states,  shall have been duly  obtained or made and
shall be effective on and as of the Closing.

         4.5      Registration Rights.   The Company shall  provide the Investor
                  -------------------
such evidence as the Investor may require that all corporate  action on the part
of the Company, its officers, directors and stockholders necessary for the grant
of registration  rights pursuant to Article 6 hereof has been taken prior to the
Closing.

         Article 5.        Conditions  of  the   Company's  Obligations  at  the
Closing.                 -----------------------------------------------------
- ------- The obligation of  the Company  to issue  the  Warrant  to the  Investor
is  subject  to the  fulfillment  to its  satisfaction,  or its  written  waiver
thereof,  prior to or at the Closing,  of the condition that the representations
and  warranties of the Investor  contained in Article 3 hereof shall be true and
correct on and as of the Closing.

         Article 6.        Registration Rights.
                           -------------------
         6.1      Company Registration.
                  --------------------
         6.1.1    Notice of Registration.  If  at any  time or from time to time
                  ----------------------
after the Closing the Company shall  determine to register  under the Act any of
its securities for its own account (other than a registration relating solely to
employee  stock  option  or  purchase  plans or  relating  solely  to a Rule 145
transaction), the Company will:

                  (A) promptly give to Investor  written  notice  thereof (which
shall  include a list of the  jurisdictions  in which  the  Company  intends  to
attempt to qualify such securities  under the applicable blue sky or other state
securities laws); and

                  (B)   include   in  such   registration   (and   any   related
qualification under blue sky laws or other compliance),  and in any underwriting
involved  therein,  all the Shares  specified in a written  request or requests,
made  within  thirty  (30) days after the date of such  written  notice from the
Company to Investor, except as set forth in Section 6.1.2.

         6.1.2    Underwriting.  If the  registration of which the Company gives
                  ------------
notice is for a  registered  public  offering  involving  an  underwriting,  the
Company shall so advise  Investor as a part of the written notice given pursuant
to  Section  6.1.1  (A).  In such event the right of  Investor  to  registration
pursuant to Section 6.1 shall be conditioned  upon Investor's  participation  in
such underwriting and the inclusion of the Investor's Shares in the underwriting
to the extent provided herein. If Investor proposes to distribute its securities
through such  underwriting it shall (together with the Company and other holders
distributing  their  securities   through  such  underwriting)   enter  into  an
underwriting  agreement in customary form with the  underwriter or  underwriters
selected  for  such  underwriting  by the  Company.  Notwithstanding  any  other
provision of this Section, if the managing underwriter determines that marketing
factors  require a limitation  of the number of shares to be  underwritten,  the
underwriter  may limit the number of Shares to be included  in the  registration
and  underwriting  but in no event  shall (i) the  amount of Shares of  Investor
included in the offering be reduced below twenty-five percent (25%) of the total
amount of  securities  included  in such  offering or (ii)  notwithstanding  (i)
above, any shares being sold by  a shareholder  exercising a demand registration
<PAGE>
right  granted by the Company  prior to the date of this  Agreement  be excluded
from such offering,  and in such situation  Investor's  shares may be completely
excluded  from  registration.  The  Company  shall  advise  Investor of any such
limitations,  and the number of Shares that may be included in the registration.
If Investor  disapproves of the terms of any such underwriting,  it may elect to
withdraw  therefrom by written  notice to the Company and the  underwriter.  Any
Shares  excluded or withdrawn  from such  underwriting  shall not be included in
such registration.

         6.1.3 Notwithstanding anything to the contrary in this Section 6.1, the
Company shall not be obligated to effect any  registration  of securities  under
this  Section  6.1  pursuant to a  registration  statement  covering  any of its
securities  to be issued in  connection  with  mergers,  acquisitions,  exchange
offers,  dividend  reinvestment  plans or stock option or other employee benefit
plans.

         6.2      Expenses of Registration.
                  ------------------------
         6.2.1  Subject to Section  6.2.2,  all expenses  incurred in connection
with any registration  pursuant to Section 6.1,  including,  without limitation,
all registration,  filing and qualification  fees,  printing expenses,  fees and
disbursements of one counsel for all selling  shareholders,  including Investor,
expenses of complying with state securities or Blue Sky laws (including  counsel
for  the  underwriters  to  the  extent  related  to  state  securities   laws),
accountants' fees and expenses incident to or required by any such registration,
expenses  incident to the  listing of  securities  on any  exchange in which the
Shares are to be listed,  and expenses of any special  audits  incidental  to or
required by such registration shall be borne by the Company.

         6.2.2    Notwithstanding  anything  to  the contrary  elsewhere in this
Section 6.2, all  underwriters'  discounts,  commissions,  or  applicable  stock
transfer  and  documentary  stamp taxes (if any)  relating to the sale of Shares
shall be borne by the seller of the Shares in all cases.

         6.3      Registration Procedures.  In  the  case of  each  registration
                  -----------------------
effected by the Company  pursuant to Section 6.1, the Company will keep Investor
advised in  writing  as to the  initiation  of each  registration  and as to the
completion thereof. At its expense the Company will:

                  (A) keep  such  registration  effective  for a  period  of six
months  or until  Investor  has  completed  the  distribution  described  in the
registration statement relating thereto, whichever first occurs;

                  (B) furnish such number of  prospectuses  and other  documents
incident thereto as Investor from time to time may reasonably request; and

                  (C) notify  Investor,  (1) when a prospectus or any prospectus
supplement or posteffective  amendment has been filed,  and, with respect to the
registration statement or any posteffective amendment,  when the same has become
effective;  (2) of any request by the  Securities and Exchange  Commission  (the
"SEC") or any other federal or state governmental authority during the period of
effectiveness of the registration statement for amendments or supplements to the
registration  statement  or related  prospectus  or for  additional  information
relating to the  registration  statement,  (3) of the issuance by the SEC or any
other federal or state  governmental  authority of any stop order suspending the
effectiveness of the registration statement or the initiation of any proceedings
for that  purpose,  (4) of the receipt by the Company of any  notification  with
respect to the suspension of the  qualification or exemption from  qualification
of any of the  Shares  for sale in any  jurisdiction  or the  initiation  of any
proceeding  for such  purpose;  or (5) of the happening of any event which makes
any statement made in the  registration  statement or related  prospectus or any
document  incorporated or deemed to be incorporated  therein by reference untrue
in any  material  respect or which  requires  the  making of any  changes in the
registration  statement or  prospectus  so that in the case of the  registration
statement,  it will not contain any untrue  statement of a material fact or omit
to state any material  fact  required to be stated  therein or necessary to make
<PAGE>
the statements  therein not misleading,  and that in the case of the prospectus,
it will not contain any untrue statement of a material fact or omit to state any
material fact or omit to state any material  fact required to be stated  therein
or necessary to make the statements  therein,  in the light of the circumstances
under which they were made, not misleading.

         6.4 The Company  may,  upon the  happening of any event (x) of the kind
described in clauses (2),  (3),  (4), or (5) of Section 6.3 (C) or (y) that,  in
the  judgment of the  Company's  Board of  Directors,  renders it  advisable  to
suspend use of the  prospectus  due to pending  corporate  developments,  public
filings with the SEC or similar events, suspend use of the prospectus on written
notice to Investor,  in which case Investor  shall  discontinue  disposition  of
Shares  covered by the  registration  statement or prospectus  until copies of a
supplemented or amended prospectus are distributed to Investor or until Investor
is advised in writing by the Company that the use of the  applicable  prospectus
may be resumed.  The Company shall use its reasonable efforts to ensure that the
use of the prospectus may be resumed as soon as  practicable.  The Company shall
use every reasonable effort to obtain the withdrawal of any order suspending the
effectiveness of the registration statement, or the lifting of any suspension of
the qualification (or exemption from qualification) of any of the securities for
sale in any jurisdiction,  at the earliest practicable moment. The Company shall
prepare as soon as practicable a supplement or  post-effective  amendment to the
registration statement or a supplement to the related prospectus or any document
incorporated  therein by reference or file any other required  document so that,
as thereafter  delivered to the purchasers of the Shares being sold  thereunder,
such prospectus will not contain an untrue  statement of a material fact or omit
to state a material fact required to be stated  therein or necessary to make the
statements  therein,  in light of the circumstances  under which they were made,
not misleading.

         6.5      Indemnification.
                  ---------------
         6.5.1 The Company will  indemnify and hold harmless  Investor,  each of
its officers and directors,  and each person controlling Investor,  with respect
to which a  registration  has been effected  pursuant to this Article 6 and each
underwriter,  if any, and each person who controls any underwriter of the Shares
held by or issuable to the Investor, against all claims, losses, damages, costs,
expenses and liabilities  whatsoever (or actions in respect thereof) arising out
of or based on any untrue statement (or alleged untrue  statement) of a material
fact contained in any  registration  statement,  preliminary or final prospectus
contained  therein  or any  amendment  or  supplement  thereto,  or based on any
omission (or alleged  omission) to state  therein a material fact required to be
stated therein or necessary to make the statements  therein not  misleading,  or
any  violation by the Company of the Act or any state  securities  law or of any
rule or  regulation  promulgated  under  the  Act or any  state  securities  law
applicable  to the  Company and  relating to action or inaction  required of the
Company in connection with any such registration,  and will reimburse  Investor,
each of its officers and directors,  and each person controlling Investor,  each
such  underwriter  and each person who  controls any such  underwriter,  for any
legal  and  any  other  expenses  as  reasonably  incurred  in  connection  with
investigating  or  defending  any  such  claim,  loss,  damage,  cost,  expense,
liability  or action,  provided  that the Company will not be liable in any such
case to the  extent  that  any such  claim,  loss,  damage,  cost,  expense,  or
liability  arises out of or is based on any untrue  statement or omission  based
upon written information furnished to the Company by an instrument duly executed
by Investor or any underwriter and stated to be specifically for use therein.

         6.5.2  Investor  will,  if Shares held by or  issuable to Investor  are
included in the  securities  as to which such  registration  is being  effected,
indemnify and hold harmless the Company,  each of its directors and officers who
sign such registration  statement,  each  underwriter,  if any, of the Company's
securities covered by such registration statement,  each person who controls the
Company  within the  meaning of the Act against  all  claims,  losses,  damages,
costs,  expenses  and  liabilities  whatsoever  (or actions in respect  thereof)
arising out of or based on any untrue  statement of a material fact contained in
<PAGE>
any such  registration  statement,  preliminary  or final  prospectus  contained
therein  or  any  amendment  or  supplement   thereto,   incident  to  any  such
registration,  or based on any omission (or alleged omission) to state therein a
material fact required to be stated  therein or necessary to make the statements
therein  not  misleading,  or any  violation  by Investor of the Act or of state
securities laws or any rule or regulation promulgated under the Act or any state
securities  law  applicable  to  Investor  and  relating  to action or  inaction
required of Investor in connection with any such registration and will reimburse
the Company, such directors,  officers, persons or underwriters for any legal or
any other expenses as reasonably  incurred in connection with  investigating  or
defending any such claim, loss, damage,  cost, expense,  liability or action, in
each case to the extent, but only to the extent, that such untrue  statement  or
omission is made in such registration  statement,  prospectus,  in reliance upon
and in  conformity  with  written  information  furnished  to the  Company by an
instrument  duly  executed by  Investor  and stated to be  specifically  for use
therein; provided, however, that the foregoing indemnity agreement is subject to
the  condition  that,  insofar  as it relates to any such  untrue  statement  or
omission made in the  preliminary  prospectus  but eliminated or remedied in the
amended  prospectus on file with the SEC at the time the registration  statement
becomes effective or the amended  prospectus filed with the SEC pursuant to rule
424(b) (be "Final Prospectus"),  such indemnity agreement shall not inure to the
benefit  of the  Company,  any  underwriter  or  any  holder  of  the  Company's
securities included in the registration  statement,  if there is no underwriter,
if a copy of the Final  Prospectus  was not  furnished  to the  person or entity
asserting  the  loss,  liability,  claim or  damage at or prior to the time such
action is required by the Act.

         6.5.3 Each party  entitled to  indemnification  under this  Section 6.5
(the  "Indemnified  Party")  shall give notice to the party  required to provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall
permit the  Indemnifying  Party to assume  the  defense of any such claim or any
litigation  resulting  therefrom,  provided  that  counsel for the  Indemnifying
Party,  who shall  conduct  the  defense of such claim or  litigation,  shall be
approved by the  Indemnified  Party (whose  approval shall not  unreasonably  be
withheld),  and the  Indemnified  Party may  participate in such defense at such
party's  expense.  No  Indemnifying  Party,  in the defense of any such claim or
litigation, shall, except with the consent of each Indemnified Party, consent to
entry of any judgment or enter into any settlement  which does not include as an
unconditional  term  thereof  the giving by the  claimant or  plaintiff  to such
Indemnified  Party of a release  from all  liability in respect to such claim or
litigation.  If any such  Indemnified  Party shall have been  advised by counsel
chosen by it that  there may be one or more  legal  defenses  available  to such
Indemnified  Party which are different from or additional to those  available to
the  Indemnifying  Party,  the  Indemnifying  Party  shall not have the right to
assume the defense of such action on behalf of such  Indemnified  Party and will
promptly  reimburse  such  Indemnified  Party and any  person  controlling  such
indemnified  Party for the reasonable fees and expenses of any counsel  retained
by the Indemnified  Party, it being understood that the Indemnifying Party shall
not,  in  connection  with any one  action or  separate  but  similar or related
actions in the same jurisdiction  arising out of the same general allegations or
circumstances,  be liable for the reasonable  fees and expenses of more than one
separate firm of attorneys for such  Indemnified  Party or  controlling  person,
which  firm shall be  designated  in  writing  by the  Indemnified  Party to the
Indemnifying Party.

         6.6      Contribution.  If  the indemnification provided for in Section
                  ------------
6.5 is  unavailable  or  insufficient  to hold  harmless  an  Indemnified  Party
thereunder,  then each  Indemnifying  Party  thereunder  shall contribute to the
account  paid or payable by such  Indemnified  Party as a result of the  losses,
claims, damages, costs, expenses,  liabilities or actions referred to in Section
6.5.1 or  6.5.2,  as the case may be in such  proportion  as is  appropriate  to
reflect the  relative  fault of the  Indemnifying  Party on the one hand and the
Indemnified  Party on the other in connection with statements or omissions which
resulted in such losses,  claims,  damages or liabilities,  as well as any other
relevant  equitable  considerations.  The relative  fault shall be determined by
reference to, among other things, whether the untrue or alleged untrue statement
of a material fact or the omission or alleged  omission to state a material fact
<PAGE>
relates to information  supplied by the  Indemnifying  Party or the  Indemnified
Party and the Parties'  relative  intent,  knowledge,  access to information and
opportunity  to correct or prevent  such  untrue  statements  or  omission.  The
Parties  hereto agree that it would not be just and  equitable if  contributions
pursuant  to this  Section 6.6 were to be  determined  by pro rata or per capita
allocation or by any other method of  allocation  which does not take account of
the equitable  considerations  referred to in the first sentence of this Section
6.6. The amount paid by an Indemnified Party as a result of the losses,  claims,
damages or  liabilities  referred to in the first  sentence of this  Section 6.6
shall be deemed to include any legal or other  expenses  reasonably  incurred by
such Indemnified Party in connection with  investigating or defending any action
or claim which is the subject of this Section 6.6.  Promptly after receipt by an
Indemnified Party of notice of the commencement of any action against such party
in respect of which a claim for contribution may be made against an Indemnifying
Party  under  this  Section  6.6,  such  Indemnified   Party  shall  notify  the
Indemnifying  Party  in  writing  of the  commencement  thereof  if  the  notice
specified  in  Section  6.5.3 has not been given  with  respect to such  action;
provided that the omission so to notify the Indemnifying Party shall not relieve
- -------- 
the  Indemnifying  Party from any liability which it may have to any Indemnified
Party  otherwise  under  this  Section  6.6,  except  to  the  extent  that  the
Indemnifying  Party is actually  prejudiced  by such failure to give notice.  No
Person guilty of fraudulent  misrepresentation  (within the meaning of Section 1
I(f) of the Act) shall be entitled to  contribution  from any person who was not
guilty of such fraudulent misrepresentation.

         6.7      Information by Investor. Investor shall furnish to the Company
                  -----------------------
such information regarding Investor and the distribution proposed by Investor as
the  Company  may  reasonably  request in writing  and as shall be  required  in
connection with any registration referred to in this Article 6.

         6.8      Rule 144 Reporting.   With  a  view  to  making  available  to
                  ------------------
Investor the benefits of  certain rules and  regulations of SEC which may permit
the sale of Shares to the public without registration, the Company agrees to:

                  (A) make and keep public information available, as those terms
are  understood and defined in Rule 144 under the Act, at all times after ninety
(90)  days  after the  effective  date of the  first  registration  filed by the
Company  which  involves a sale of  securities  of the  Company  to the  general
public;

                  (B) file with the SEC in a timely manner all reports and other
documents required of the Company under the Act and the Exchange Act; and

                  (C)  furnish  to  Investor  so  long  as it  owns  any  Shares
forthwith  upon request a written  statement by the Company that it has complied
with the reporting  requirements of said Rule 144 (at any time after ninety (90)
days after the effective date of said first registration  statement filed by the
Company), and of the Act and the Securities Exchange Act of 1934, as amended (at
any time after it has become subject to such reporting requirements),  a copy of
the most  recent  annual or  quarterly  report of the  Company,  and such  other
reports and documents so filed by the Company as may be reasonably  requested in
availing Investor of any rule or regulation of the SEC permitting the selling of
any such securities without registration.

         6.9      Termination of Registration Rights.   All  registration rights
                  ----------------------------------
provided  hereunder  shall  terminate upon the earlier to occur of (a) the tenth
anniversary  of the Closing and (b) such time as Investor is able to sell all of
its Shares under Rule 144 during any two successive, three-month periods.

<PAGE>

         6.10     Future Grants of Registration Rights.  The Company  agrees for
                  ------------------------------------
the benefit of Investor that it will not grant  registration rights with respect
to any of its  securities  upon  terms  more  favorable  to the  holders of such
securities than those contained herein.

         6.11     Lock-Up.  If the Company registers its securities for  its own
                  -------
account in an  underwritten  public  offering and Investor  does not sell in the
registered offering all of its shares issuable under the Warrant,  then Investor
agrees not to sell,  transfer,  short sell against or otherwise divest itself of
economic risk with respect to the shares subject to this Warrant not sold in the
transaction  for the same period of time as the  directors  and  officers of the
Company  agree to subject  their shares of the  Company's  securities to similar
restrictions.

         Article 7.        Access to Information.  The Investor  shall  have all
                           ---------------------
rights to  information  and access to  information  as are granted  stockholders
under the laws of the state of the Company's incorporation.

         7.1      Notification.  The Company shall notify  Investor  in  writing
                  ------------
sixty (60) days before the Warrant expires of the impending expiration.

         7.2      Opinion of Counsel on Transfer.  The  Company  shall cause its
                  ------------------------------
counsel to deliver an opinion to the  Company's  transfer  agent if  required to
permit a sale of shares under Rule 144.  Such opinion will be delivered  only if
the proposed transfer complies with the requirement of Rule 144.

         Article 8.        Miscellaneous
                           -------------
         8.1      Agreement Is Entire Contract.   This Agreement,  including the
                  ----------------------------
Exhibits  and Schedule 1 hereto,  constitutes  the entire  contract  between the
parties hereto with respect to the subject matter hereof.

         8.2      Survival of Representations and Warranties.        
                  ------------------------------------------
The representations, warranties, covenants and agreements of the Company and the
Investor  contained  herein or made pursuant to this Agreement shall survive the
execution and delivery of this Agreement and the Closing.

         8.3      Severability.  If one or more provisions of this Agreement are
                  ------------
held to be invalid,  illegal or unenforceable  under applicable law, portions of
such provisions,  or such provisions in their entirety, to the extent necessary,
shall be severed from this Agreement, and the balance of this Agreement shall be
enforceable in accordance with its terms.

         8.4      Counterparts.    This   Agreement  may  be  executed  in   two
                  ------------
counterparts,  each of which  shall be  deemed  an  original,  but both of which
together shall constitute one and the same instrument.

         8.5      Governing Law.  It is the intention of the parties hereto that
                  -------------
the internal laws of the State of  California,  as applied to contracts  entered
into between  California  residents to be performed  wholly  within  California,
shall govern the validity of this Agreement,  the construction of its terms, and
the  interpretation  and  enforcement  of the rights  and duties of the  parties
hereto.

         8.6      Binding Upon Successors and Assigns.  This  Agreement  and the
                  -----------------------------------
rights and obligations of the parties hereunder shall be binding upon, and inure
to the benefit of, the permitted successors and assigns of the parties hereto.

<PAGE>

         IN WITNESS WHEREOF, the parties hereto have executed this  Agreement as
         ------------------
of the day and year first above written.

                                       SIERRA SEMICONDUCTOR CORPORATION

                                       By: /s/ James V. Diller
                                       ------------------------ 
                                       Name:   James V. Diller
                                              (Print)
                                       Title:  CEO

                                       HAMBRECHT & QUIST LLC

                                       By: /s/ James A. Davidson
                                       ------------------------- 
                                       Name:   James A. Davidson
                                              (Print)
                                       Title:  Managing Director
<PAGE>

                                                                       EXHIBIT B
                                                                       ---------

THIS  WARRANT  HAS NOT BEEN  REGISTERED  UNDER THE  SECURITIES  ACT OF 1933,  AS
AMENDED, AND MAY NOT BE OFFERED FOR SALE, SOLD, PLEDGED OR OTHERWISE TRANSFERRED
WITHOUT AN EFFECTIVE  REGISTRATION THEREOF UNDER SUCH ACT OR LAWS OR PURSUANT TO
RULE 144 OR AN OPINION OF COUNSEL,  REASONABLY  SATISFACTORY  TO THE COMPANY AND
ITS COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED.

                           WARRANT TO PURCHASE SHARES
                                 OF COMMON STOCK

Company: SIERRA  SEMICONDUCTOR   CORPORATION,  a  California   corporation  (the
         "Company"),  and any corporation  that shall succeed to the obligations
         of the Company under this Warrant.

Number of Shares:          25,000
Class of Stock:            Common Stock
Initial Exercise Price:    $9.25 per Share
Expiration Date:           August 28, 2000
Date of Grant:             August 28, 1996

         THIS  CERTIFIES  THAT,  for value  received,  Hambrecht & Quist LLC, is
entitled to purchase the above number (as adjusted pursuant to Section 5 hereof)
of fully  paid  and  nonassessable  shares  of the  above  Class of Stock of the
Company at the Initial  Exercise Price above (as adjusted  pursuant to Section 5
hereof),  subject to the  provisions and upon the terms and conditions set forth
herein.

         Article 1.   Definitions.
                      -----------

                  As used  herein,  the  following  terms,  unless  the  context
otherwise requires, shall have the following meanings:

                  (A) "Act" shall mean the  Securities  Act of 1933, as amended,
or any similar federal  statute,  and the rules and regulations  thereunder,  as
shall be in effect at the time.

                  (B)  "Common   Stock"  shall  mean  shares  of  the  presently
authorized  common  stock of the  Company  and any stock into which such  common
stock may hereafter be exchanged.

                  (C)  "Holder"  shall  mean any person who shall at the time be
the holder of this Warrant.

                  (D) "Shares"  shall mean the shares of the Class of Stock that
the Holder is entitled to purchase upon  exercise of this  Warrant,  as adjusted
pursuant to Section 5 hereof.

                  (E) "Warrant  Price" shall mean the Initial  Exercise Price at
which this Warrant may be exercised, as adjusted pursuant to Section 5 hereof.

         Article 2.   Term.
                      ----
                  The purchase right represented by this Warrant is exercisable,
in whole or in part, at any time on or before the Expiration Date.



<PAGE>


         Article 3.   Method of Exercise; Payment; Issuance of New Warrant.
                      ----------------------------------------------------
                  Subject to Section 2 hereof, the purchase right represented by
this  Warrant  may be  exercised  by the  Holder,  in whole  or in part,  by the
surrender of this Warrant (with the notice of exercise  form attached  hereto as
Appendix A duly  executed)  at the  principal  office of the  Company and by the
payment to the Company,  by check made payable to the Company  drawn on a United
States  bank  and for  United  States  funds  of an  amount  equal  to the  then
applicable Warrant Price per share multiplied by the number of Shares then being
purchased.  In the event of any exercise of the purchase  right  represented  by
this Section 3,  certificates  for the Shares so purchased shall be delivered to
the Holder within  thirty (30) days of receipt of such payment and,  unless this
Warrant has been fully  exercised  or expired,  a new Warrant  representing  the
portion of the Shares, if any, with respect to which this Warrant shall not then
have been  exercised  shall also be issued to the Holder within such thirty (30)
day period.

         Article 4.   Exercise Price.
                      --------------
                  The Warrant Price at which this Warrant may be exercised shall
be the Initial Exercise Price, as adjusted from time to time pursuant to Section
5 hereof.

         Article 5.   Adjustment of Number and Kind of Shares and  Adjustment of
                      ----------------------------------------------------------
 Warrant Price.
- --------------
         5.1      Certain Definitions.  As used in this Section 5 the  following
                  -------------------
 terms shall have the following respective meanings:

                  (A)      Options:rights, options or warrants to subscribe for,
                           -------
purchase or  otherwise  acquire  either  shares of Common  Stock or  Convertible
Securities;

                  (B)      Convertible Securities:any evidences of indebtedness,
                           ----------------------
shares of stock or other securities  directly or indirectly  convertible into or
exchangeable for Common Stock.

         5.2      Adjustments. The  number and  kind  of securities  purchasable
                  -----------
upon the  exercise of this  Warrant  and the  Warrant  Price shall be subject to
adjustment from time to time upon the occurrence of certain events, as follows:

                  (A)      Reclassification,  Reorganization,  Consolidation  or
                           -----------------------------------------------------
Merger.  In the case of  any   reclassification  of  the  Common  Stock,  or any
- ------
reorganization, consolidation  or  merger of the  Company  with or into  another
corporation  (other than a merger or  reorganization  with  respect to which the
Company  is  the  surviving  corporation  and  which  does  not  result  in  any
reclassification   of  the  Common  Stock),  the  Company,   or  such  successor
corporation, as the case may be, shall execute a new warrant, providing that the
Holder shall have the right to exercise  such new warrant and upon such exercise
to  receive,  in lieu of each share of the Class of Stock  theretofore  issuable
upon exercise of this Warrant, the number and kind of securities receivable upon
such  reclassification,  reorganization,  consolidation or merger by a holder of
shares of the same Class of Stock of the  Company for each share of the Class of
Stock.  The  aggregate  warrant  price of the new warrant shall be the aggregate
Warrant   Price  in   effect   immediately   prior   to  the   reclassification,
reorganization,  consolidation  or merger.  Such new warrant  shall  provide for
adjustments  which shall be as nearly  equivalent as may be  practicable  to the
adjustments  provided  for in this  Section  5  including,  without  limitation,
adjustments  to the  Warrant  Price and to the  number of shares  issuable  upon
exercise of this Warrant.  The provisions of this subsection (a) shall similarly
apply  to  successive  reclassification,   reorganizations,   consolidations  or
mergers.

<PAGE>

                  (B)      Split, Subdivision or Combination of Shares.  
                           -------------------------------------------
If the Company at any time while this Warrant remains  outstanding and unexpired
shall  split,  subdivide or combine the Class of Stock for which this Warrant is
then exercisable,  the Warrant Price shall be  proportionately  decreased in the
case of a split or  subdivision  or  proportionately  increased in the case of a
combination.  Any adjustment  under this  subsection (b) shall become  effective
when the split, subdivision or combination becomes effective.

                  (C)      Stock Dividends.   If the Company  at any  time while
                           ---------------
this Warrant remains outstanding and unexpired shall pay a dividend with respect
to the Class of Stock for which  this  Warrant is then  exercisable,  payable in
shares of that Class of Stock,  Options or Convertible  Securities,  the Warrant
Price  shall be  adjusted,  from and  after  the  date of  determination  of the
stockholders  entitled to receive such dividend or distributions,  to that price
determined by multiplying the Warrant Price in effect  immediately prior to such
date of  determination  by a fraction  (i) the  numerator  of which shall be the
total number of shares of that Class of Stock  outstanding  immediately prior to
such dividend or  distribution,  and (ii) the  denominator of which shall be the
total number of shares of the same Class of Stock outstanding  immediately after
such dividend or distribution  (including shares of that Class of Stock issuable
upon exercise,  conversion or exchange of any Options or Convertible  Securities
issued  as  such  dividend  or  distribution).  If the  Options  or  Convertible
Securities issued as such dividend or distribution by their terms provide,  with
the passage of time or otherwise,  for any decrease in the consideration payable
to the Company,  or any increase in the number of shares issuable upon exercise,
conversion  or exchange  thereof (by change of rate or  otherwise),  the Warrant
Price shall, upon any such decrease or increase becoming  effective,  be reduced
to reflect  such  decrease or increase  as if such  decrease or increase  became
effective  immediately  prior to the  issuance  of the  Options  or  Convertible
Securities as the dividend or distribution. Any adjustment under this subsection
(c) shall become effective on the record date.

         5.3      Adjustment of Number of Shares.  Upon each  adjustment  in the
                   ------------------------------
Warrant  Price  pursuant to this Section 5, the number of Shares  issuable  upon
exercise  of  this  Warrant  shall  be  adjusted  to  the  product  obtained  by
multiplying the number of Shares issuable  immediately  prior to such adjustment
in the  Warrant  Price by a fraction  (i) the  numerator  of which  shall be the
Warrant Price immediately prior to such adjustment,  and (ii) the denominator of
which shall be the Warrant Price immediately after such adjustment.

         5.4      Other Kinds of Dividends.  If  the  Company at any  time while
                  ------------------------
this Warrant remains outstanding and unexpired shall pay a dividend with respect
to the Class of Stock for which  this  Warrant is then  exercisable,  payable in
property  other  than  shares of that  Class of Stock,  Options  or  Convertible
Securities,  then upon  exercise of this  Warrant the Holder shall  receive,  in
addition  to shares of that  Class of Stock,  such  additional  property  as the
Holder would have received if the Holder had exercised this Warrant  pursuant to
Article  7 on the date  immediately  before  the  record  date  for  determining
shareholders of the Company entitled to receive such a dividend.  If the Company
is unable to hold such  property for payment to the Holder upon exercise of this
Warrant, then an additional warrant shall be issued allowing for the acquisition
of such property  independent of the exercise of this Warrant.  Such  additional
Warrant ("Additional  Warrant") shall have the same terms and conditions of this
Warrant,  except that the aggregate  price shall equal the aggregate fair market
value determined in accordance with Section 7.4 of the property which would have
been  distributed to the Holder if the Holder had held the Class of Stock on the
record date for determining the distribution.  The Warrant Price of this Warrant
shall be adjusted,  from and after the date of determination of the stockholders
entitled to receive such dividend,  to that price determined by subtracting from
the  aggregate  Warrant  Price  in  effect  immediately  prior  to such  date of
determination the aggregate Warrant Price of the Additional Warrant.

<PAGE>

         Article 6.   Notice of Adjustments.
                      ---------------------
                  So long as this Warrant  remains  outstanding  and  unexpired,
whenever the Warrant Price shall be adjusted  pursuant to Section 5 hereof,  the
Company shall issue a certificate  signed by its chief financial officer setting
forth, in reasonable detail,  the event requiring the adjustment,  the amount of
the  adjustment,  the method by which such  adjustment  was  calculated  and the
Warrant Price after giving effect to such adjustment,  and shall cause a copy of
such  certificate  to be mailed (by first  class mail,  postage  prepaid) to the
Holder.

         Article 7.   Right to Convert Warrant Into Stock.
                      -----------------------------------
         7.1      Right to Convert.  In  addition  to the rights  granted  under
                  ----------------
Section 3 of this  Warrant,  the  Holder  shall  have the right to  require  the
Company to convert  this  Warrant  (the  "Conversion  Right") into shares of the
Class of Stock for which the  Warrant is then  exercisable,  as provided in this
Section 7. Upon exercise of the Conversion  Right,  the Company shall deliver to
the Holder  (without  payment by the Holder of any Warrant Price) that number of
shares of stock equal to the quotient obtained by dividing (x) the value of this
Warrant at the time the Conversion Right is exercised (determined by subtracting
the aggregate Warrant Price immediately prior to the exercise of the Conversion
Right from the aggregate fair market value of the Shares  issuable upon exercise
of this Warrant  immediately  prior to the exercise of the Conversion  Right, as
determined  pursuant  to  Section  7.4 below) by (y) the fair  market  value (as
determined  pursuant  to Section  7.4 below) of one share of that Class of Stock
immediately prior to the exercise of the Conversion Right.

         7.2      Method of Exercise. So long as the Warrant remains outstanding
                  ------------------
and unexpired,  the Conversion  Right may be exercised at any time by the Holder
by the surrender of this Warrant at the principal office of the Company together
with a written statement  specifying that the Holder thereby intends to exercise
the Conversion Right. Certificates of the shares of stock issuable upon exercise
of the Conversion Right shall be delivered to the Holder within thirty (30) days
following  the  Company's  receipt of this Warrant  together  with the aforesaid
written statement.

         7.3      Notification Prior to Expiration.  To  the extent this Warrant
                  --------------------------------  
is not previously exercised,  the Company shall be obligated to notify Holder in
writing of impending expiration sixty (60) days prior to such expiration.

         7.4      Valuation of Stock.  For purposes of  this Section 7, the fair
                  ------------------
market value of one share of the Class of Stock  issuable  upon exercise of this
Warrant shall mean:

                  (A) The  product of (i) the  highest  closing  price or, if no
closing price is reported, the closing bid and asked prices of the Common Stock,
quoted in the Over-The-Counter Market Summary or the closing price quoted on any
exchange  on which the  Common  Stock is listed,  whichever  is  applicable,  as
published in the Western  Edition of The Wall Street Journal for the thirty (30)
trading days prior to the date of  determination  of fair market value, and (ii)
the number of shares of Common Stock into which each share of the Class of Stock
is then convertible, if applicable;

                  (B) If the Common Stock is not traded  Over-The-Counter  or on
an  exchange,  the fair market value of the Class of Stock per share shall be as
determined in good faith by the Company's Board of Directors; provided, however,
that if the Holder  disputes in writing the fair market value  determined by the
Board of Directors within thirty (30) days of being informed of such fair market
value,  the fair market value shall be determined by an  independent  appraiser,
appointed in good faith by the Company's Board of Directors.

<PAGE>


         Article 8.   Compliance   With   Act;  Transferability of  Warrant;
                      -----------------------------------------------------
 Disposition of Shares.
 ---------------------
                    
         8.1      Legends.   This Warrant and the  Shares issued  upon  exercise
                  -------
thereof shall be imprinted with a legend in substantially the following form:

         "THE  SECURITIES   REPRESENTED  BY  THIS   CERTIFICATE  HAVE  NOT  BEEN
         REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE
         OFFERED FOR SALE,  SOLD,  PLEDGED OR OTHERWISE  TRANSFERRED  WITHOUT AN
         EFFECTIVE  REGISTRATION  THEREOF UNDER SUCH ACT OR PURSUANT TO RULE 144
         OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE COMPANY AND ITS
         COUNSEL THAT SUCH REGISTRATION IS NOT REQUIRED."

         8.2      Transferability and Non-negotiability of Warrant and Shares.  
                  -----------------------------------------------------------
This  Warrant and the Shares  issued upon  exercise  thereof  shall not be sold,
transferred or assigned in whole or in part without  compliance  with applicable
federal  and  state  securities  laws  by  the  transferor  and  the  transferee
(including,  without  limitation,  the  delivery  of  investment  representation
letters and legal opinions reasonably satisfactory to the Company, if reasonably
requested by the Company).  Subject to the provisions of this Section 8.2, title
to this Warrant may be transferred in the same manner as a negotiable instrument
transferable by endorsement and delivery.

         Article 9.   Miscellaneous.
                      -------------
                  No  fractional  shares  of  the  Shares  shall  be  issued  in
connection with any exercise  hereunder,  but in lieu of such fractional  shares
the Company  shall make a cash  payment  therefor  upon the basis of the Warrant
Price then in effect.  The terms and  provisions  of this Warrant shall inure to
the benefit  of, and be binding  upon,  the  Company and the Holders  hereof and
their respective  successors and assigns.  This Warrant shall be governed by and
construed  under the laws of the State of  California  as applied  to  contracts
entered into between residents of the State of California to be wholly performed
in the State of California.  The titles of the sections and  subsections of this
Warrant are for convenience only and are not to be considered in construing this
Warrant.  All pronouns used in the Warrant shall be deemed to include masculine,
feminine and neuter forms.

                                    SIERRA SEMICONDUCTOR CORPORATION

                                    By:          
                                           -------------------------------------
                                    Title:       
                                           -------------------------------------
                                    
<PAGE>


                                   APPENDIX A

                               NOTICE OF EXERCISE
                               ------------------

TO:    
     ----------------------

         1. The undersigned hereby elects to purchase                  shares of
                                                      ----------------
the Common Stock of SIERRA SEMICONDUCTOR  CORPORATION,  pursuant to terms of the
attached  Warrant,  and tenders  herewith  payment of the purchase price of such
shares in full, together with all applicable transfer taxes, if any.

         2. Please issue a certificate or certificates  representing said shares
of the Common Stock in the name of the  undersigned  or in such other name as is
specified below:

         3. The  undersigned  represents  it is  acquiring  the shares of Common
Stock  solely for its own  account for  investment  and not as a nominee for any
other party and not with a view toward the resale or distribution thereof within
the meaning of the Securities Act of 1933, as amended.

                                         ------------------------------------
                                                        (Name)

                                         ------------------------------------
                                                      (Address)
                                         ------------------------------------

                                         ------------------------------------

                                         ------------------------------------
                                           (Taxpayer Identification Number)

- -----------------------------------
   (print name of Holder)
By:          
        ---------------------------
Title:      
        ---------------------------
Date:      
        ---------------------------



                       DATED THIS 3RD DAY OF OCTOBER 1996



                                     BETWEEN


                  (1) CHARTERED SEMICONDUCTOR MANUFACTURING LTD


                      (2) SIERRA SEMICONDUCTOR CORPORATION


                                       AND


                               (3) PMC-SIERRA INC.







                           AMENDMENT AGREEMENT (NO. 1)
                                       TO
                     DEPOSIT AGREEMENT DATED 15 AUGUST 1995





"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".




<PAGE>


                           AMENDMENT AGREEMENT (NO. 1)

THIS  AMENDMENT  AGREEMENT (NO.1) is made  the  3rd day of October 1996,  by and
 between:-

(1)      CHARTERED SEMICONDUCTOR  MANUFACTURING LTD (formerly known as Chartered
         Semiconductor   Manufacturing  Pte  Ltd),  a  company  incorporated  in
         Singapore with its registered office at 60 Woodlands Industrial Park D,
         Street 2, Singapore 738406 ("CSM");

(2)      SIERRA SEMICONDUCTOR CORPORATION, a company  incorporated in California
         and having its place of  business  at 2075 North  Capitol  Avenue,  San
         Jose, CA 95132, United States of America ("Customer"); and

(3)      PMC-SIERRA, INC., a company incorporated in Canada and having its place
         of business at 105-8555  Baxter  Place,  Burnaby,  B.C.  Canada V5A 4V7
         ("PMC").

WHEREAS

(A)      CSM and Customer had entered into a Deposit  Agreement  dated 15 August
         1995 (the "Deposit  Agreement") for the purpose of Customer  depositing
         certain funds with CSM and procuring CSM to make  available to Customer
         certain wafer manufacturing capacity.

(B)      Customer desires such wafer manufacturing  capacity from CSM to be made
         available to PMC, a subsidiary of Customer,  and Customer  collectively
         and Customer is willing to guarantee the  obligations of PMC under this
         Agreement.

(C)      PMC is willing to enter into this  Amendment  Agreement and to be bound
         by the  terms  and  conditions  set  forth  herein  and in the  Deposit
         Agreement.

(D)      CSM,  Customer and PMC are entering  into this  Amendment  Agreement to
         vary the Deposit Agreement with effect from the date hereof.

<PAGE>


NOW  THEREFORE,  in consideration of  the  foregoing and  the  mutual  covenants
contained herein, the parties agree as follows:-


1.       INTERPRETATION

         All terms and  references  used in the Deposit  Agreement and which are
         defined or  construed in the Deposit  Agreement  but are not defined or
         construed in this Amendment  Agreement  shall have the same meaning and
         construction in this Amendment Agreement.

2.       ADDITIONAL PARTY

         PMC hereby agrees to, and CSM and Customer are willing that PMC, become
         a party to the Deposit Agreement and this Amendment Agreement and to be
         bound by the terms and  conditions  set forth in the same. CSM will, in
         accordance  with the terms  and  conditions  set  forth in the  Deposit
         Agreement and this Amendment  Agreement,  make available wafer capacity
         to Customer and PMC collectively.

3.       AMENDMENT TO THE DEPOSIT AGREEMENT

         The  Parties  agree that with  effect  from the date of this  Amendment
         Agreement, the Deposit Agreement shall be amended as follows:-

         3.1      CLAUSE 1 (THE DEPOSIT)
                  ----------------------

                  CLAUSES  1.1,  1.2 AND 1.3 shall be deleted in their  entirety
                  and replaced with the following:-

                  "1.1     As at the date of this Amendment Agreement,  Customer
                           has  deposited  with   CSM  the  sum  of  US  Dollars
                           [REDACTED] (the "Deposit").

                  1.2      Upon the expiry of the term of this  Agreement or the
                           earlier termination thereof in accordance with Clause
                           6 or Clause  7.2,  CSM will  return to  Customer  the
                           Deposit,   without   interest   and  subject  to  any
                           deductions  or refunds  made by CSM  pursuant  to the
                           terms of this Agreement.

                  1.3      Customer  shall  have  the  option  to  increase  the
                           Deposit to the sum of US Dollars [REDACTED]  provided
                           that:-

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>


                           (a)      Customer shall  give CSM  at least  six  (6)
                                    months' written notice of such  intention to
                                    increase the Deposit;

                           (b)      CSM has the  right to  request  Customer  to
                                    increase  the  Deposit  by a  date  ("Expiry
                                    Date") to be  determined  by CSM in its sole
                                    discretion,  provided  that CSM  shall  give
                                    Customer  at least  six (6) to  twelve  (12)
                                    months  notice.  In the event  Customer does
                                    not  increase the Deposit to  [REDACTED]  by
                                    the  determined   Expiry  Date,   Customer's
                                    option to increase the Deposit shall expire;

                           (c)      in the event Customer increases the  Deposit
                                    to [REDACTED] before the Expiry  Date,
                                    CSM's Supply Commitment shall  be calculated
                                    based on the following formula:-

                                    CSM Supply Commitment per month = 
                                                [REDACTED]

                                    where  D = the amount of Deposit  then  with
                                    CSM and

                           (d)      the terms and  conditions of  such  increase
                                    shall  be  mutually   agreed   between   the
                                    parties.

         3.2      CLAUSE 2 (CSM SUPPLY COMMITMEN)
                  -------------------------------

                  The provisions of Clause 2 shall be amended as follows:-

                  CLAUSES  2.1,  2.2,  2.3 and 2.4  shall  be  deleted  in their
                  entirety and replaced with the following:-

                  "2.1     In  consideration of the  payment of  the  Deposit by
                           Customer,  Customer's maintenance of the Deposit with
                           CSM and Customer's  guaranteeing of PMC's obligations
                           under  the  terms of this  Agreement,  CSM will  make
                           available  to Customer and PMC,  wafer  manufacturing
                           capacity  for 8-inch  wafers  (based on 15 mask level
                           wafers) in each calendar quarter  commencing from the
                           first  calendar  quarter  of 1997 until the expiry or
                           the   earlier   termination   of  the  term  of  this
                           Agreement,  in such  quantities as set out in Annex A
                           (the "CSM Supply Commitment").  For the  purposes  of


"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission"
<PAGE>
                           clarity, the CSM Supply Commitment  quantities as set
                           out in Annex A represent  the  aggregate of the wafer
                           manufacturing  capacity available to Customer and PMC
                           in each quarter.

                  2.2      Unless otherwise expressly provided in this Agreement
                           the sale of wafers by CSM to  Customer  and PMC,  the
                           capacity of which is made  available  to Customer and
                           PMC under this  Agreement,  shall be  governed by the
                           terms  and  conditions  of  CSM's  foundry  agreement
                           ("Foundry  Agreement")  to be entered into by CSM and
                           each of Customer and PMC.

                  2.3      CSM  reserves  the  right to  adjust  the pricing  of
                           wafers  to be  supplied  by CSM  from  time  to  time
                           depending on prevailing market  conditions,  provided
                           however that CSM shall give Customer and PMC not less
                           than  3  months'   prior   written   notice  of  such
                           adjustment.   In  any  event,  the  price  of  wafers
                           supplied to Customer and/or PMC shall be no more than
                           [REDACTED]  above CSM's pricing for similar  products
                           and  processes  and similar  quantities  available to
                           CSM's equity investors."


         3.3      CLAUSE 3 (CUSTOMER LOADING COMMITMENT)
                  --------------------------------------

                  The heading 3., and CLAUSES  3.1, 3.2 AND 3.3 shall be deleted
                  in their entirety and replaced with the followings

                  "3.      CUSTOMER AND PMC LOADING COMMITMENT

                  3.1      Customer and PMC jointly and severally agree to place
                           purchase  orders with CSM for such quantity of 8-inch
                           wafer equivalents (based on 15 mask level wafers) for
                           delivery  during  the  calendar  quarters  set out in
                           Annex A (the "Customer and PMC Loading  Commitment").
                           The aggregate quantity of wafers for which orders are
                           placed by Customer and PMC is hereinafter referred to
                           as the "Customer and PMC Actual Loading".

                  3.2      The Customer and PMC Actual Loading for each calendar
                           quarter  during  the term of the  Agreement  shall in
                           aggregate  be equal to the  Customer  and PMC Loading
                           Commitment. In addition, the month to month variation
                           in the  Customer  and PMC  Actual  Loading  shall not
                           exceed [REDACTED]  without the prior written approval
                           of CSM.

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>
                  3.3      Customer  and/or  PMC may  elect  to  place  purchase
                           orders for 6 inch wafers,  on a two-for-one  basis of
                           two 6-inch wafers for every one 8-inch wafer.  In the
                           event of such  election,  the CSM Committed  Capacity
                           quantities   and  the   Customer   and  PMC   Loading
                           Commitment quantities shall be adjusted accordingly.

                           By way of illustration,  if in respect of 1Q97 (where
                           the CSM  Committed  Capacity and the Customer and PMC
                           Loading   Commitment  is   [REDACTED]   equivalents),
                           Customer or PMC elects to purchase (y) 6-inch wafers,
                           then:-

                           (i)      the CSM Committed Capacity and  the Customer
                                    and PMC Loading Commitment for 1Q97 shall be
                                    adjusted  to be  equal  to [REDACTED]

                           (ii)     for  the  purposes of  Clauses  5.4 and  5.5
                                    below,   the   Customer   and  PMC   Loading
                                    Commitment  for 1Q97 shall be adjusted to be
                                    equal to [REDACTED].

                  3.4      Customer  and/ or PMC may elect which of CSM's Fab 1,
                           Fab 2 or Fab 3 such  6-inch or 8-inch  wafers will be
                           manufactured  in.  Customer  and PMC agree  that such
                           election of Fabs, if any, must be notified to CSM six
                           (6) months in advance  and be included in the rolling
                           6 month  forecast to be given by Customer  and/or PMC
                           in accordance with Clause 3.5 below.

                  3.5      With   effect   from  the  date  of  this   Amendment
                           Agreement, Customer and PMC shall provide to CSM on a
                           monthly basis, each of their rolling 6-month forecast
                           of each of  their  monthly  volume  requirements  for
                           wafers for each relevant  product to be  manufactured
                           hereunder  and the Fab in which such wafers are to be
                           manufactured.

                           The first 3 months of each 6-month  forecast shall be
                           backed by purchase orders for such first 3 months."

         3.4      CLAUSE 4 (LIQUIDATED DAMAGES)
                  -----------------------------

                  The heading 4. and CLAUSES 4.1, 4.2, 4.3, 4.4 AND 4.5 shall be
                  deleted in their entirety and replaced with the following:-

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>
                  "4.      GUARANTEE

                           In  consideration  of  CSM  agreeing,  at  Customer's
                           request, to make available to PMC such wafer capacity
                           as set out in this Agreement,  Customer hereby agrees
                           to guarantee  the  performance  of PMC's  obligations
                           under this Agreement."

         3.5      CLAUSE 5 (SET OFF AND MAINTENANCE OF DEPOSIT)
                  ---------------------------------------------

                  The provisions of Clause 5 shall be amended as follows:-

                  i)       by   deleting  CLAUSES  5.1,  5.2 AND  5.3  in  their
                           entirety and replacing them with the following:-

                           "5.1     CSM shall be  entitled  to  deduct  from and
                                    set-off  against  the  Deposit,  any payment
                                    falling due and remaining unpaid by Customer
                                    and/or PMC under the Foundry Agreement.

                           5.2      At the end of  each  calendar  quarter,  CSM
                                    shall  issue a written  notice  to  Customer
                                    and/or PMC stating the amount of the overdue
                                    payments and  Customer  and/or PMC shall pay
                                    the  relevant  sum to CSM  within 30 days of
                                    the date of such  notice,  so as to maintain
                                    the Deposit at [REDACTED]  less such amounts
                                    that  may  have  been  refunded  by  CSM  to
                                    Customer  pursuant  to Clause  5.4 or Clause
                                    5.5 below.

                           5.3      CSM's   right  of   deduction   and  set-off
                                    pursuant  to Clause 5.2 shall be in addition
                                    to  CSM's  right  to  claim  the   aforesaid
                                    overdue  payments  separately  as a debt due
                                    from  Customer  and/or  PMC and shall not in
                                    any way  prejudice  such  right or any other
                                    rights or remedies which CSM may have at law
                                    or in equity."

                  ii)      by inserting the following NEW CLAUSES 5.4 AND 5.5:-

                           "5.4     For the period [REDACTED], provided that the
                                    Customer and PMC Actual Loading quantity for
                                    each calendar year is equal to [REDACTED] or
                                    more  of  the   Customer   and  PMC  Loading
                                    Commitment  for such  calendar year (subject
                                    to  such  adjustments  as  may  be  made  in
                                    accordance with Clause 3.3 above),  CSM will
                                    refund to

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>
                                    Customer the amount of [REDACTED]  from
                                    the Deposit within 30 days of [REDACTED] of
                                    the year in which Customer has fulfilled the
                                    condition stated in this Clause 5.4.

                                    By way of  illustration,  if Customer and/or
                                    PMC purchase an aggregate of  [REDACTED]  or
                                    more of the  quantities  for  [REDACTED]  as
                                    specified   in  Annex  A  (subject  to  such
                                    adjustments  as may be  made  in  accordance
                                    with Clause 3.3 above), then CSM will refund
                                    [REDACTED]  from the  Deposit to Customer by
                                    [REDACTED].

                           5.5      For the  period  [REDACTED]  to  [REDACTED],
                                    provided  that the  Customer  and PMC Actual
                                    Loading  quantity  for  each  calendar  year
                                    [REDACTED]  the  Customer  and  PMC  Loading
                                    Commitment  for such  calendar year (subject
                                    to  such  adjustments  as  may  be  made  in
                                    accordance  with  Clause  3.3 above) by more
                                    than  [REDACTED],  then CSM will  return  to
                                    Customer the amount of  [REDACTED]  from the
                                    Deposit  within 30 days of [REDACTED] of the
                                    year in which  Customer  has  fulfilled  the
                                    condition stated in this Clause 5.5.

                                    By way of  illustration,  if Customer and/or
                                    PMC  purchase  an  aggregate  of  more  than
                                    [REDACTED] of the  quantities for [REDACTED]
                                    as  specified  in Annex A  (subject  to such
                                    adjustments  as may be  made  in  accordance
                                    with Clause 3.3 above), then CSM will refund
                                    [REDACTED]  from the  Deposit to Customer by
                                    [REDACTED]."

         3.6      CLAUSE 6 (TERM AND TERMINATION)
                  -------------------------------

                  The provisions of Clause 6 shall be amended as follows:-

                  i)       By deleting CLAUSE 6.1(A) in its entirety; and

                  ii)      By  renumbering  CLAUSE 6.1(B), (C) AND (D) as Clause
                           6.1"(a)", "(b)" and "(c)" respectively.

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>
         3.7      CLAUSE 7 (FORCE MAJEURE)
                  ------------------------

                  The  provisions  of Clause 7.1 shall be  amended by  inserting
                  after the word "Customer's"  appearing in the second line, the
                  words "and PMC`s" and by inserting after the word 'CSM' in the
                  sixth line, the word "PMC".

         3.8      CLAUSE 8 (WARRANTY AND INDEMNITY)
                  ---------------------------------

                  The  provisions  of CLAUSES 8.1,  8.2,  8.3,  8.4, 8.5 AND 8.6
                  shall be  deleted  in their  entirety  and  replaced  with the
                  following :-

                  "8.1     Customer and PMC jointly and  severally  warrant that
                           each has the right to use and  license the use of the
                           design and processes provided by Customer and/PMC and
                           each  hereby  grants  to CSM  the  right  to use  the
                           aforesaid design and processes for the performance of
                           its obligations  under this Agreement and the Foundry
                           Agreement.

                  8.2      Customer   and  PMC  shall   jointly  and   severally
                           indemnify,  hold  harmless and defend CSM against any
                           claims that  Customer's  and/or  PMC's  products or a
                           process or design licensed from or otherwise provided
                           by  Customer  and/or  PMC  and  used  by CSM  for the
                           performance of its  obligations  under this Agreement
                           is an  infringement  of any  letters  patent or other
                           intellectual  property  rights,  including,   without
                           limitation,  any infringement based on specifications
                           furnished by Customer  and/or PMC or  resulting  from
                           the use of any  equipment  or  process  specified  by
                           Customer and/or PMC.

                  8.3      CSM  shall  notify  Customer  and PMC of any claim of
                           infringement or of commencement of any suit,  action,
                           or   proceedings   alleging   infringement   of   any
                           intellectual  property  rights  of  any  third  party
                           forthwith  after receiving  notice thereof.  Customer
                           and PMC shall have the right in their sole discretion
                           and at their expense to participate in the defence of
                           any such claim,  suit,  action or proceedings  and in
                           any and all negotiations with respect thereto.

                  8.4      CSM  shall   indemnify,   hold  harmless  and  defend
                           Customer  and/or  PMC  against  any  claims  that the
                           wafers manufactured by CSM pursuant to this Agreement
                           using manufacturing processes provided by CSM for the
                           performance of its  obligations  under this Agreement
                           is an  infringement  of any  letters  patent or other
                           intellectual property rights of any third party.
<PAGE>
                  8.5      Customer  and PMC  shall  notify  CSM of any claim of
                           infringement or of commencement of  any suit, action,
                           or   proceedings   alleging   infringement   of   any
                           intellectual  property  rights  of  any  third  party
                           forthwith after receiving  notice thereof.  CSM shall
                           have  the  right in its  sole  discretion  and at its
                           expense  to  participate  in the  defence of any such
                           claim, suit, action or proceedings and in any and all
                           negotiations with respect thereto.

                  8.6      Customer  and PMC hereby agree that in the event that
                           CSM is  required  to  make  any  payments,  including
                           without limitation, licence fees or royalty payments,
                           to any  third  party  in  respect  of  any  of  CSM's
                           manufacturing   processes   used   by   CSM   in  the
                           performance of its obligations  under this Agreement,
                           CSM shall be  entitled  to adjust the  pricing of the
                           wafers supplied to Customer and PMC accordingly. Such
                           adjustment  shall be  effective  upon CSM  giving  to
                           Customer or PMC not less than 3 months' prior written
                           notice thereof."

         3.9      CLAUSE 10 (NOTICES)
                  -------------------

                  CLAUSE 10.1 shall be amended as follows:-

                  (i)      by deleting the address and facsimile  number for CSM
                           in its entirety and replacing it with the following:-

                           "CSM
                            ---

                           60 Woodlands Industrial Park D, Street 2
                           Singapore 738406
                           Facsimile no : (65) 3622908
                           Attn: Mr Tan Bock Seng
                                 President"
<PAGE>
                  (ii)     by inserting after  the address and  facsimile number
                           for Customer, the following:-

                           "PMC
                            ---

                           105-8555 Baxter Place,
                           Burnaby, B.C.
                           Canada V5A 4V7
                           Facsimile no: (604) 4156207
                           Attn: Mr Greg Aasen
                                 Chief Operating Officer"

         3.10     ANNEX A (PAYMENT SCHEDULE)
                  --------------------------

                  ANNEX A shall be deleted in its entirety.

         3.11     ANNEX B (CSM-SUPPLY COMMITMENT/CUSTOMER LOADING COMMITMENT)
                  ----------------------------------------------------------

                  ANNEX B shall be deleted in its  entirety  and replaced by the
                  ANNEX A (CSM  SUPPLY  COMMITMENT  / CUSTOMER  AND PMC  LOADING
                  COMMITMENT) attached.

4.       SAVING AND INCORPORATION

4.1      Save as expressly  amended by this Amendment  Agreement,  the terms and
         conditions of the Deposit  Agreement shall continue to be in full force
         and effect in all other respects.

4.2      The Deposit  Agreement and this Amendment  Agreement shall be construed
         as one document and this Amendment Agreement shall be deemed to be part
         of the Deposit Agreement.  Where the context so permits,  references in
         the Deposit  Agreement and in this Amendment  Agreement to "the Deposit
         Agreement"  or  "this   Agreement"  shall  be  read  and  construed  as
         references to the Deposit Agreement as amended and supplemented by this
         Amendment Agreement.

5.       GOVERNING LAW

         This  Amendment  Agreement  shall  be  governed  by  and  construed  in
         accordance with the laws of Singapore.  The parties hereby  irrevocably
         submit to the nonexclusive jurisdiction of the courts of Singapore.

<PAGE>



IN WITNESS  WHEREOF the Parties have  hereunto  entered into this  Agreement the
date first above written.

Signed by /s/ Tom Gurnee                          )
                                                  )
                                                  )
CHARTERED SEMICONDUCTOR                           )
MANUFACTURING LTD                                 )
in the presence of:-                              )/s/ signature unreadable


/s/ Angela Hon
Name:  Angela Hon


Signed by /s/ James V. Diller                     )
                                                  )
                                                  )
SIERRA SEMICONDUCTOR                              )
CORPORATION                                       )
in the presence of:-                              )/s/ Gary Kennedy


/s/ James V. Diller
Name:


Signed by /s/ James V. Diller                     )
                                                  )
                                                  )
PMC-SIERRA INC.                                   )
in the presence of:-                              )/s/ Gary Kennedy



/s/ James V. Diller
Name:

<PAGE>


                                     ANNEX A


                              CSM SUPPLY COMMITMENT
                              ---------------------
                       CUSTOMER AND PMC LOADING COMMITMENT
                       -----------------------------------


      Number of 8-inch silicon wafer equivalents (based on 15 mask level)*



 1Q97    2Q97    3Q97    4Q97    1Q98    2Q98    3Q98    4Q98 through 4Q2000

                                   [REDACTED]



*subject to such adjustments as may be made in accordance with Clause 3.3

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".

                                OPTION AGREEMENT




                                     BETWEEN



                                PMC-SIERRA, INC.



                                       AND



                        SIERRA SEMICONDUCTOR CORPORATION



                                       AND



                  TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.



                                NOVEMBER 6, 1996







"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".











<PAGE>



                                TABLE OF CONTENTS


         1. TERMINATION OF THE OPTION AGREEMENTS                               3

         2. DEFINITIONS                                                        4

         3. VOLUME COMMITMENT                                                  5

         4. WAFER PRICE                                                        5

         5. OTHER PURCHASE TERMS AND CONDITIONS                                6

         6. FAILURE TO PURCHASE THE CUSTOMERS COMMITTED CAPACITY;
            FIRST RIGHT OF REFUSAL                                             6

         7. TERM AND TERMINATION                                               8

         8. BOARD APPROVAL                                                     8

         9. LIMITATION OF LIABILITY                                            8

         10. NOTICE                                                            9

         11. ENTIRE AGREEMENT                                                  9

         12. GOVERNING LAW                                                    10

         13. ARBITRATION                                                      10

         14. ASSIGNMENT                                                       10

         15. CONFIDENTIALITY                                                  10

         16. FORCE MAJEURE                                                    11

         17. OBLIGATION OF FUTURE PURCHASE                                    11

         EXHIBIT A                                                            12

         EXHIBIT B                                                            13

         EXHIBIT C                                                            14

<PAGE>

                                OPTION AGREEMENT
                                ----------------


         THIS AGREEMENT is made and becomes effective as of November 6,1996 (the
"Effective Date") by Taiwan  Semiconductor  Manufacturing Co., Ltd. ("TSMC"),  a
company  organized  under the laws of the Republic of China with its  registered
address  at No. 12 1, Park  Ave.  3,  Science-Based  Industrial  Park,  Hsinchu,
Taiwan,  and Sierra  Semiconductor  Corporation  ("Sierra),  a company organized
under the laws of California,  with its  registered  address at 2222 Qume Drive,
San Jose, CA 95131 and PMC-Sierra Inc. ("PMC-Sierra"), a company organized under
the laws of California,  with its registered  address at 105-8555  Baxter Place,
Burnaby,  British  Columbia,   Canada  V5A  4V7  (collectively  referred  to  as
"Customers").

RECITALS

         WHEREAS,  TSMC  currently  supplies  Customers with wafers and Customer
wishes to increase the volume of wafers to be purchased from TSMC;

         WHEREAS,  in  order  to  increase  its  output,  TSMC  must  accelerate
[REDACTED] and advance [REDACTED];

         WHEREAS,  as a condition to TSMC's  acceleration  of these  facilities,
TSMC has asked  Customers  to make  capacity  commitments  and  certain  advance
payment under two option agreements;

         WHEREAS,  the parties intend to terminate the two option agreements and
enter into a new option agreement for the purposes set forth herein.

AGREEMENT

         NOW, THEREFORE, in consideration of the mutual covenants and conditions
contained herein, the parties agree as follows:

1.       TERMINATION OF THE OPTION AGREEMENTS

Sierra and TSMC agree to terminate the Option Agreement  between Sierra and TSMC
dated November 6, 1995 upon the Effective date hereof. PMC-Sierra and TSMC agree
to terminate the Option Agreements between PMC-Sierra and TSMC dated November 6,
1995 upon the Effective Date hereof. Any rights and obligations accrued prior to
the  termination  of  these  two  agreements,  excluding  the  option  fees  due
thereunder, shall remain effective.

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>

2.       DEFINITIONS

         (a)      "Base Capacity" used in this Agreement shall mean the capacity
                  that TSMC agrees to provide,  and Customers agree to purchase,
                  in  addition  to  the  Option   Capacity,   pursuant  to  this
                  Agreement.

         (b)      "Customers  Committed Capacity" used this Agreement shall mean
                  the total capacity that Customers  agree to purchase from TSMC
                  pursuant to this Agreement, and is set forth in Exhibit B.

         (c)      "Option  Capacity" used in this Agreement  shall mean the firm
                  capacity   commitment  made  by  Customers  pursuant  to  this
                  Agreement,  for  which  Capacity  Customer  agrees to pay TSMC
                  liquidated damages at [REDACTED] per Wafer Equivalent  for any
                  unused capacity pursuant to Subsection 6(a).

         (d)      "Option Fee" used in this Agreement shall mean the deposit, US
                  [REDACTED]  in total,  that  Customers  have  placed with TSMC
                  upon  the  execution   hereof  for  liquidated   damages  upon
                  Customer's failure to purchase the Option Capacity.

         (e)      "TSMC  Committed  Capacity" used in this Agreement  shall mean
                  the total  capacity  that TSMC agrees to provide to  Customers
                  pursuant to this Agreement, and is set forth in Exhibit B.

         (f)      "Wafer  Equivalent"  used in this  Agreement  shall  mean  the
                  number of wafers based on the [REDACTED].  For  details of the
                  equivalency  factor,  please  refer to Exhibit A. Any  and all
                  capacity  commitments  referred to in this  Agreement shall be
                  measured in Wafer Equivalent.

         (g)      "Customers"  mean either Sierra or PMC-Sierra,  or both Sierra
                  and PMC-Sierra together, as the case may be, when both of them
                  are  principally  liable for the  performance of the duties or
                  obligations  hereunder as one party; in which case, Sierra and
                  PMC-Sierra are jointly and severally liable of the obligations
                  of Customers  hereunder.  However,  Sierra and  PMC-Sierra may
                  individually exercise its rights hereunder when the term

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
 <PAGE>

         "Sierra" and  "PMC-Sierra" is used;  which shall be construed,  neither
joint,  nor joint and several,  but several.  In order to determine the role and
responsibility  of each Sierra and PMC-Sierra as a party "Sierra and PMC-Sierra"
hereunder and further  clarify and define their  respective  rights,  duties and
obligations  hereunder,  Sierra  and  PMC-Sierra  shall  immediately  after  the
execution of this Agreement, enter into an agreement between them.

3.       VOLUME COMMITMENT

         (a)      Customers agree to purchase from TSMC the Customers  Committed
                  Capacity,  and  subject  to the  payment  of the Option Fee by
                  Customers  under  Section 5 below,  TSMC  agrees to provide to
                  Customer the TSMC Committed Capacity,  as set forth in Exhibit
                  B. In any calendar year, the orders placed by Customers  shall
                  first apply  fulfill the  [REDACTED]  portion of the Customers
                  Committed Capacity, and then the [REDACTED] portion thereof.

         (b)      Each  month,  Customers  agree to provide to TSMC a  six-month
                  rolling  forecast of the number of wafers that  Customers will
                  purchase, with the volume for the first [REDACTED] weeks being
                  frozen  (i.e.,  Customers  must  purchase  all of the quantity
                  forecast for the delivery in the first [REDACTED] weeks of the
                  forecast).  The  forecast  must  be  based  on  wafers  out or
                  deliveries expected to be made by TSMC.

         (c)      TSMC  will use its  reasonable  effort to cause its fabs to be
                  capable of producing  wafers of more advanced  specifications,
                  as set  forth in the TSMC  Technology  Road  Map  attached  as
                  Exhibit C.

4.       WAFER PRICE

         (a)      The wafer  prices  for the Option  Capacity  shall [REDACTED].
                  In the event  the wafer  prices  for the  Customers  Committed
                  Capacity do not comply with the preceding sentence,  TSMC will
                  make  proper  price  changes  for the  unfilled  orders,  upon
                  Customers' notice in writing.

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>

         (b)      The parties shall  negotiate in good faith each year the wafer
                  prices for the Option  Capacity for the following year, and if
                  no agreement may be reached by the parties before October each
                  year,  the parties  agree to submit the dispute to the binding
                  arbitration  pursuant  to  Section  13 below,  and under  such
                  circumstances, neither party shall have the right to terminate
                  this Agreement under Section 7 below.

5.       OTHER PURCHASE TERMS AND CONDITIONS

         (a)      Within  ninety (90) days upon  execution  hereof,  the parties
                  agree to use their best efforts to negotiate  and enter into a
                  Wafer   Production   Agreement  for  the  purchase  of  wafers
                  hereunder.

         (b)      Upon  the execution hereof, TSMC will return  to Customers the
                  two promissory notes already made to TSMC.

6.       FAILURE  TO PURCHASE  THE CUSTOMERS  COMMITTED CAPACITY; FIRST RIGHT OF
                  REFUSAL

         (a)      Customers  shall notify TSMC of Customers'  annual total wafer
                  requirement  from outside  sources for the subsequent  year by
                  every November, and shall notify TSMC of any changes therefrom
                  during  the  applicable  year.  TSMC has the right to  conduct
                  audits on Customers'  annual total wafer  requirements  with a
                  thirty (3 0) days written notice to Customers.

                  Customers  have the right to Carry  forward any portion of the
                  Customers  Committed  Capacity in the years [REDACTED] through
                  [REDACTED] to the year  [REDACTED]  with a [REDACTED]  written
                  notice,  provided  that the  Customers'  annual orders to TSMC
                  represents  at  least[REDACTED]  of the  Customers  [REDACTED]
                  wafer  requirement from outside  sources.  In no event can any
                  Customers  Committed  Capacity be carried  forward  beyond the
                  year of [REDACTED].  If in the year  [REDACTED]  Customers are
                  not able to use the Customers Committed Capacity that may have
                  been carried forward into the year [REDACTED] during the years
                  [REDACTED] though [REDACTED] or if Customers fail to carry any
                  portion  of the  Customers  Committed  Capacity  to  the  year
                  [REDACTED]  herein,  Customers  shall promptly  notify TSMC of
                  such in writing and first offer TSMC such  capacity  for sales
                  to any third  parties.  TSMC may, at its  option,  accept such
                  offer, in whole or in part,  within  [REDACTED] days following

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>

                  Customers'   notification,   and  if  TSMC  so  accepts,   the
                  corresponding Option Fee will be returned without interest. In
                  the  event  that  TSMC  decides  not  to  accept  such  offer,
                  Customers may assign this  Agreement  (including  the right to
                  purchase the  Customers  Committed  Capacity for the remaining
                  term of this  Agreement)  to any third  parties  acceptable to
                  TSMC,  within  [REDACTED]  upon TSMC's  written notice that it
                  will not accept such offer,  and if  Customers  fail to do so,
                  TSMC shall have the right to withhold the corresponding Option
                  Fee at [REDACTED]  as liquidated  damages from the Option Fee,
                  and TSMC is entitled  to sell or use any such unused  capacity
                  thereafter.

                  In the event Customers' annual orders to TSMC represents lower
                  than [REDACTED] of the Customers  [REDACTED] wafer requirement
                  from outside  sources,  [REDACTED] of the Customers  Committed
                  Capacity for that  particular  year can be carried  forward to
                  the year [REDACTED]. If in such calendar year, for any reason,
                  Customers  are not able to use or purchase all or a portion of
                  the Customers  Committed  Capacity,  Customers  shall promptly
                  notify  TSMC of such in  writing  and  first  offer  TSMC such
                  capacity  for sales to any  third  parties.  TSMC may,  at its
                  option,  accept  such  offer,  in  whole  or in  part,  within
                  [REDACTED] following Customers'  notification,  and if TSMC so
                  accepts,  the  corresponding  Option Fee at [REDACTED] will be
                  returned without interest.  In the event that TSMC decides not
                  to accept such  offer,  Customers  may assign  this  Agreement
                  (including  the  right to  purchase  the  Customers  Committed
                  Capacity  for the  remaining  term of this  Agreement)  to any
                  third  parties  acceptable  to TSMC,  within  [REDACTED]  upon
                  TSMC's written notice that it will not accept such offer,  and
                  if  Customers  fails to do so,  TSMC  shall  have the right to
                  withhold  the   corresponding   Option  Fee   at[REDACTED]  as
                  liquidated  damages  from the Option Fee, and TSMC is entitled
                  to sell or use any such unused capacity thereafter.

         (b)      If any portion of this  Agreement  or the whole  Agreement  is
                  assigned to any third  parties  acceptable to TSMC pursuant to
                  this Subsection 6(a) above,  such third parties shall abide by
                  the  terms  and  conditions  of this  Agreement  and TSMC will
                  return  to   Customers   the  Option  Fee   corresponding   to
                  [REDACTED].

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>

7.       TERM AND TERMINATION

         (a)      The term of this  Agreement  shall commence from the Effective
                  Date,  and  continue  until  [REDACTED],  or the date of total
                  consumption  of the Option Fee,  whichever is earlier.  In the
                  event that any of the Customers  Committed Capacity is carried
                  forward to the year of [REDACTED] pursuant to Subsection 6(a),
                  this Agreement shall be extended to [REDACTED].

         (b)      TERMINATION  FOR OTHER BREACH OR FOR  BANKRUPTCY  Either party
                  may terminate  this Agreement if, the other party breaches any
                  material  provisions of this Agreement  (other than the breach
                  of Section 5 above),  and does not cure or remedy  such breach
                  within  ninety (90) days of receiving  written  notice of such
                  breach,  or  (ii)  becomes  the  subject  of  a  voluntary  or
                  involuntary  petition in bankruptcy or any proceeding relating
                  to insolvency,  receivership or liquidation,  if such petition
                  or  proceeding is not dismissed  with  prejudice  within sixty
                  (60) days after filing.

         (c)      EFFECT OF TERMINATION
                  The  parties  shall  remain  liable to the other party for any
                  outstanding  and matured rights and obligations at the time of
                  termination.

8.       BOARD APPROVAL

                  Customers  shall  obtain  the  approval  by  their  Boards  of
                  Directors of this  Agreement,  and submit to TSMC, at the time
                  of executing this  Agreement,  an authentic copy of it's board
                  resolution authorizing the representative  designated below to
                  execute this Agreement.

9.       LIMITATION OF LIABILITY

                  In no event  shall  any  party  be  liable  for any  indirect,
                  special,  incidental or consequential  damages (including loss
                  of profits and loss of use) resulting from,  arising out of or
                  in connection  with either  party's  performance or failure to
                  perform under this Agreement,  or resulting from,  arising out
                  of or in connection with either party's producing,  supplying,
                  and/or  sale  of  the  wafers,  whether  due  to a  breach  of
                  contract, breach of warranty, tort, negligence, or otherwise.

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>

10.      NOTICE

                  All notices required or permitted to be sent by  either  party
                  to the  other  party  under  this  Agreement  shall be sent by
                  registered mail postage prepaid,  or by personal delivery,  or
                  by fax.  Any  notice  given  by fax  shall  be  followed  by a
                  confirmation  copy  within  ten (10) days.  Unless  changed by
                  written  notice  given  by  either  party  to the  other,  the
                  addresses and fax numbers of the  respective  parties shall be
                  as follows:

         To TSMC:

         TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
                  No. 121, Park Avenue 3
                  Science-Based Industrial Park
                  Hsinchu, Taiwan
                  Republic of China                           FAX: 886-35-781545

                  To Customers:
                  PMC-SIERRA INC.
                  105-8555 Baxter Place
                  Burnaby, B.C. Canada V5A 4V7                FAX: 604-415-6207

                  Sierra Semiconductor Corporation
                  2222 Qume Drive
                  San Jose, CA 95131                          FAX: 408-894-0219

11.      ENTIRE AGREEMENT

                  This Agreement, including Exhibits A-C, constitutes the entire
                  agreement  between  the  parties  with  respect to the subject
                  matter  hereof,  and  supersedes  and  replaces  all  prior or
                  contemporaneous   understandings,   agreements,  dealings  and
                  negotiations,  oral or written,  regarding the subject  matter
                  hereof.  No  modification,  alteration  or  amendment  of this
                  Agreement  shall be effective  unless in writing and signed by
                  all  parties.  No waiver of any  breach or  failure  by either
                  party to enforce  any  provision  of this  Agreement  shall be
                  deemed a waiver of any other or subsequent breach, or a waiver
                  of future enforcement of that or any other provision.

<PAGE>

12.      GOVERNING LAW

                  This  Agreement  will  be  governed  by  and   interpreted  in
accordance with the laws of the Republic of China.

13.      ARBITRATION

                  Each party will make best  efforts  to  resolve  amicably  any
                  disputes or claims under this Agreement among the parties.  In
                  the event that a resolution  is not reached  among the parties
                  within thirty (30) days after  written  notice by any party of
                  the  dispute or claim,  the  dispute or claim shall be finally
                  settled by binding  arbitration  in Taipei  under The Rules of
                  Arbitration of the International  Chamber of Commerce by three
                  (3) arbitrators  appointed in accordance with such rules.  The
                  arbitration proceeding shall be conducted in English. Judgment
                  on the award  rendered by the arbitrator may be entered in any
                  court having jurisdiction thereof.

14.      ASSIGNMENT

         This  Agreement  shall be binding  on and inure to the  benefit of each
         party and its  successors,  and except that  Customers  may assign this
         Agreement under Section 6 above,  neither party shall assign any of its
         rights hereunder nor delegate its obligations  hereunder,  to any third
         party, without the prior written consent of the other.

15.      CONFIDENTIALITY

         The parties shall keep in strict  confidence the existence and contents
         of this  Agreement,  and take best  precaution  possible to prevent any
         unauthorized  disclosure  or use thereof.  Both  parties  agree that no
         disclosure of this Agreement or any matter  relating hereto may be made
         without the disclosing party first providing the proposed disclosure to
         the  other  party two  weeks in  advance  for  consent  and  reasonable
         changes.  In the event  disclosure is required by laws or  governmental
         regulations,  the  disclosing  party shall provide the  opportunity  to
         protest, participate in preparing disclosure or make reasonable changes
         hereto.

<PAGE>

16.      FORCE MAJEURE

         Neither party shall be responsible for delays or failure in performance
         resulting from acts beyond the reasonable  control of such party.  Such
         acts shall  include but not limited to acts of God,  war,  riot,  labor
         stoppages, governmental actions, fires, floods, and earthquakes.

17.      OBLIGATION OF FUTURE PURCHASE

         Customers agree to contract TSMC to manufacture [REDACTED] of its total
wafers  requirement above and beyond any contractual  commitments in place as of
the [REDACTED],  including the Customers Committed Capacity  requirement of this
Agreement.  Upon completion of the capacity obligations of this Agreement, be it
[REDACTED],  or  [REDACTED]  in the case  that some of the  Customers  Committed
Capacity  is carried  forward  from the years  [REDACTED],  and into the year of
[REDACTED],  Customers  commit  to  contract  TSMC to  manufacture  no less than
[REDACTED] of its total wafer  requirement.  In the year prior to the expiration
hereof,  the  parties  agree to  negotiate  in good  faith  to enter  into a new
agreement  under which  Customers agree to contract TSMC to provide a minimum of
[REDACTED] of Customers' total wafer requirements, provided that TSMC is able to
continue to offer competitive technology, pricing, quality and delivery.

         IN WITNESS WHEREOF, the parties, have executed this Agreement as of the
date first stated above.

TAIWAN SEMICONDUCTOR                            PMC-SIERRA CORPORATION
MANUFACTURING CO., LTD.


BY:/s/ Donald Brooks                            BY: /s/ James V. Diller
   ---------------------------                      -----------------------
   Donald Brooks                                    James V. Diller
   President                                        C.E.O.


SIERRA SEMICONDUCTOR
CORPORATION

BY: /s/ James V. Diller
    -------------------------
    James V. Diller
    C.E.O.

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>



                                    EXHIBIT A
                            EQUIVALENCY FACTOR TABLE


                                   [REDACTED]



"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>



                                    EXHIBIT B
                                 CUSTOMERS'/TSMC
                               COMMITTED CAPACITY

                                   [REDACTED]



"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".
<PAGE>


                                    EXHIBIT C
                          TSMC CMOS TECHNOLOGY ROADMAP



                                 [CHART OMITTED]

"The   Confidential   Portion  has  been  omitted  pursuant  to  a  request  for
confidential  treatment and filed  separately  with the  Securities and Exchange
Commission".

                                 LEASE AGREEMENT


                                PRODUCTION COURT
                                    LAKE CITY




















TENANT : PMC - SIERRA, INC.


LEASE COMMENCEMENT:  May 15, 1996


<PAGE>
<TABLE>
<CAPTION>


                                                  TABLE OF CONTENTS

                                                                                                           Page No.


<S>                                                                                                             <C>
         ARTICLE 1
                                                     DEFINITIONS................................................  1

1.1      Additional Rent........................................................................................  1
         ---------------

1.2      Additional Services....................................................................................  2
         -------------------

1.3      Base Rent..............................................................................................  2
         ---------

1.4      Building...............................................................................................  2
         --------

1.5      Capital Tax............................................................................................  2
         -----------

1.6      Common Areas...........................................................................................  2
         ------------

1.7      Cost of Additional Services............................................................................  2
         ---------------------------

1.8      Commencement Date......................................................................................  3
         -----------------

1.9      Insured Damage.........................................................................................  3
         --------------

1.10     Land...................................................................................................  3
         ----

1.11     Landlord's Architect...................................................................................  3
         --------------------

1.12     Lease..................................................................................................  3
         -----

1.13     Leasehold Improvements.................................................................................  3
         ----------------------

1.14     Normal Business Hours..................................................................................  3
         ---------------------

1.15     Operating Costs........................................................................................  3
         ---------------

1.16     Permitted Use..........................................................................................  4
         -------------

1.17     Premises...............................................................................................  4
         --------

1.18     Prime Rate.............................................................................................  5
         ----------

1.19     Property...............................................................................................  5
         --------

1.20     Proportionate Share....................................................................................  5
         -------------------

1.21     Rent...................................................................................................  5
         ----

1.22     Rentable Area..........................................................................................  5
         -------------

1.23     Sales Tax..............................................................................................  5
         ---------

1.24     Structural Repairs or Replacements.....................................................................  5
         ----------------------------------

1.25     Taxes..................................................................................................  5
         -----
<PAGE>

1.26     Term...................................................................................................  6
         ----

         ARTICLE 2
                                                 PREMISES AND INTENT............................................  6

2.1      Premises...............................................................................................  6
         --------

2.2      Intent.................................................................................................  6
         ------

2.3      Parking................................................................................................  6
         -------

         ARTICLE 3
                                                        TERM....................................................  6

3.1      Term...................................................................................................  6
         ----

         ARTICLE 4
                                                        RENT....................................................  7

4.1      Base Rent..............................................................................................  7
         ---------

4.2      Additional Rent........................................................................................  7
         ---------------

4.3      Estimate of Additional Rent............................................................................  8
         ---------------------------

4.4      Adjustment for Additional Rent.........................................................................  8
         ------------------------------

4.5      Building Not Fully Occupied............................................................................  8
         ---------------------------

4.6      Direct Assessment......................................................................................  8
         -----------------

4.7      Landlord Tax Obligation................................................................................  8
         -----------------------

4.8      Amounts Past Due.......................................................................................  9
         ----------------

4.9      Value-Added Tax........................................................................................  9
         ---------------

4.10     Waiver of Offset.......................................................................................  9
         ----------------

4.11     Receipts, etc..........................................................................................  9
         --------------

4.12     Allocation of Taxes....................................................................................  9
         -------------------

         ARTICLE 5
                                                 TENANT'S COVENANTS............................................. 10

5.1      Occupancy.............................................................................................. 10
         ---------

5.2      Rent................................................................................................... 10
         ----

5.3      Permitted Use.......................................................................................... 10
         -------------

5.4      Waste and Nuisance..................................................................................... 10
         ------------------

5.5      Floor Loads............................................................................................ 10
         -----------

5.6      Insurance Risks........................................................................................ 11
         ---------------
<PAGE>

5.7      Noxious Fumes and Odours............................................................................... 11
         ------------------------

5.8      Condition.............................................................................................. 11
         ---------

5.9      By-Laws................................................................................................ 11
         -------

5.10     Rules and Regulations.................................................................................. 12
         ---------------------

5.11     Surrender, Overholding................................................................................. 12
         ----------------------

5.12     Exterior Signage....................................................................................... 12
         ----------------

5.13     Inspection and Access.................................................................................. 12
         ---------------------

5.14     Exhibiting Premises.................................................................................... 13
         -------------------

5.15     Name of Building....................................................................................... 13
         ----------------

5.16     Acceptance of Premises................................................................................. 13
         ----------------------

5.17     No Auction............................................................................................. 13
         ----------

5.18     Yard and Parking Obstruction........................................................................... 13
         ----------------------------

         ARTICLE 6
                                                LANDLORD'S COVENANTS............................................ 13

6.1      Quiet Enjoyment........................................................................................ 13
         ---------------

         ARTICLE 7
                                                      UTILITIES................................................. 14

7.1      Utilities.............................................................................................. 14
         ---------

7.2      Use of Water........................................................................................... 14
         ------------

7.3      Energy Conservation.................................................................................... 14
         -------------------

         ARTICLE 8
                                           REPAIR, DAMAGE AND DESTRUCTION....................................... 14

8.1      Landlord's Repairs..................................................................................... 15
         ------------------

8.2      Tenant's Repairs....................................................................................... 15
         ----------------

8.3      Abatement and Termination.............................................................................. 15
         -------------------------

         ARTICLE 9
                                        LICENSES, ASSIGNMENTS AND SUBLETTINGS................................... 17

9.1      Licenses............................................................................................... 17
         --------

9.2      Assignments and Sublettings............................................................................ 17
         ---------------------------

         ARTICLE 10
                                              FIXTURES AND IMPROVEMENTS......................................... 19

10.1     Installation of Fixtures & Improvements................................................................ 19
         ---------------------------------------
<PAGE>

10.2     Liens and Encumbrances on Fixtures & Improvements...................................................... 19
         -------------------------------------------------

10.3     Tenant's Goods......................................................................................... 20
         --------------

10.4     Removal of Fixtures and Improvements................................................................... 20
         ------------------------------------

         ARTICLE 11
                                         INSURANCE, LIABILITY AND INDEMNITY..................................... 20

11.1     Landlord's Insurance................................................................................... 20
         --------------------

11.2     Tenant's Insurance..................................................................................... 21
         ------------------

11.3     Limitation of Landlord's Liability..................................................................... 22
         ----------------------------------

11.4     Indemnity.............................................................................................. 22
         ---------

         ARTICLE 12
                              SUBORDINATION, ATTORNMENT, REGISTRATION AND CERTIFICATES.......................... 23

12.1     Subordination and Attornment........................................................................... 23
         ----------------------------

12.2     Registration........................................................................................... 23
         ------------

12.3     Certificates........................................................................................... 23
         ------------

12.4     Non-Disturbance Agreement.............................................................................. 24
         -------------------------

         ARTICLE 13
                                      REMEDIES OF LANDLORD ON TENANT'S DEFAULT.................................. 24

13.1     Remedying by Landlord, Non-Payment and Interest........................................................ 24
         -----------------------------------------------

13.2     Remedies Cumulative.................................................................................... 24
         -------------------

13.3     Right of Re-entry on Termination....................................................................... 24
         --------------------------------

13.4     Re-entry and Termination............................................................................... 25
         ------------------------

13.5     Rights on Re-entry..................................................................................... 25
         ------------------

13.6     Distress............................................................................................... 25
         --------

13.7     Payment of Rent, Etc., on Termination.................................................................. 25
         -------------------------------------

         ARTICLE 14
                               CANCELLATION OF INSURANCE AND EVENTS TERMINATING LEASE........................... 26

14.1     Cancellation of Insurance.............................................................................. 26
         -------------------------

14.2     Default................................................................................................ 26
         -------

         ARTICLE 15
                                                    MISCELLANEOUS............................................... 27

15.1     Notices................................................................................................ 27
         -------
<PAGE>

15.2     Entire Agreement....................................................................................... 28
         ----------------

15.3     Area Determination..................................................................................... 28
         ------------------

15.4     Successors and Assigns, Interpretation................................................................. 28
         --------------------------------------

15.5     Force Majeure.......................................................................................... 28
         -------------

15.6     Waiver................................................................................................. 28
         ------

15.7     Governing Law, Covenants, Severability................................................................. 29
         --------------------------------------

15.8     Headings, Captions..................................................................................... 29
         ------------------

15.9     Time for Payment....................................................................................... 29
         ----------------

15.10    Time of Essence........................................................................................ 29
         ---------------

15.11    Special Provisions......................................................................................29
         ------------------

(a)      Option to Renew........................................................................................ 29
         ---------------

(b)      Options to Lease Contiguous Space...................................................................... 29
         ---------------------------------

(c)      Right to First Refusal to Lease........................................................................ 30
         -------------------------------

(d)      Right of First Opportunity to Lease Space.............................................................. 31
         -----------------------------------------

(e)      Option to Expand....................................................................................... 31
         ----------------

(f)      Relocation of Other Tenants to Accommodate Tenant...................................................... 31
         -------------------------------------------------

(g)      Interpretation......................................................................................... 32
         --------------

</TABLE>
<PAGE>
LEASE AGREEMENT made as of the fifteenth day of May, 1996

BETWEEN:


         PILOT PACIFIC  DEVELOPMENTS  INC., B.C.  Incorporation  No. 398327,  on
         behalf of KAB PROPERTIES  INC.,  B.C.  Incorporation  No. 397623,  both
         being bodies corporate  carrying on business at 505 Burrard Street, 930
         One  Bentall  Centre,  in the City of  Vancouver,  in the  Province  of
         British Columbia

         (hereinafter collectively called the "Landlord");


AND:


         PMC  -  SIERRA,  INC.,  Federal  Incorporation  No.  282445-1,  a  body
         corporate  carrying on business at 8501 Commerce  Court, in the City of
         Burnaby, in the Province of British Columbia

         (hereinafter called the "Tenant").



WHEREAS KAB  Properties  Inc.  ("KAB") is the  registered  owner of that certain
parcel of land  situated  in the City of  Burnaby,  in the  Province  of British
Columbia and more  particularly  described  in Schedule "B" hereof  (hereinafter
called the "Land"); and

WHEREAS Pilot Pacific Developments Inc. ("Pilot") represents KAB and is entering
into this Lease on behalf of KAB as the duly authorized agent thereof; and

WHEREAS the Landlord has  constructed or intends to construct an office building
containing lab, high technology and flex space upon the Land (hereinafter called
the "Building") shown as "Phase II Building" on the site plan attached hereto as
Schedule "A1"; and

WHEREAS the Tenant has agreed to lease space in the Building which will comprise
the area more particularly  hereinafter set forth for the term and at the rental
and  subject to the terms,  covenants,  conditions  and  agreements  hereinafter
contained;

WITNESSETH THAT:
<PAGE>

                                        1
                                   DEFINITIONS


1.0      In  this  Lease  the  following  expressions  shall  have the following
         meanings:
    
1.1      Additional Rent
         ---------------

"Additional  Rent" means the payments of Operating Costs and Taxes and any other
payments  which the Tenant is required to make to the Landlord  pursuant to this
Lease.

1.2      Additional Services
         -------------------

"Additional  Services"  means  the  services  and  supervision  supplied  by the
Landlord  from time to time to the Tenant and which are  approved  in writing by
the Tenant and are  additional to the normal  operation and  maintenance  of the
Property and other services which the Landlord has agreed to supply  pursuant to
the  provisions  of this  Lease and to like  provisions  of other  leases of the
Building.

1.3      Base Rent
         ---------

"Base  Rent"  means the fixed  annual rent  calculated  and payable  pursuant to
Article 4.1.

1.4      Building
         --------

"Building" has the meaning set out on page 1 of the Lease but if the Building is
expanded or becomes  part of a bigger  building by being  connected  to the 8525
Building,  then except as otherwise  specifically  provided  herein,  "Building"
shall mean the bigger building.

1.5      Capital Tax
         -----------

"Capital Tax" means an imputed amount  presently or hereafter  imposed from time
to time upon KAB and  payable by KAB (or by Pilot  acting on behalf of KAB or by
any other  corporation  acting on behalf of KAB) and which is levied or assessed
against KAB on account of its  ownership of or capital  employed in the Land and
Building.  Capital  Tax shall be  imputed as if the amount of such tax were that
amount  due if the Land and  Building  were the only  real  property  of KAB and
Capital Tax  includes  the amount of any capital or place of business tax levied
by the provincial  government or other applicable  taxing authority  against the
Landlord  with respect to the Land and Building  whether or not known as Capital
Tax or by any other name.

1.6      Common Areas
         ------------

"Common Areas" means all areas of the Building or Property, as may be designated
by the Landlord  from time to time,  including  without  limitation,  corridors,
electrical rooms,  washrooms,  staircases,  retaining walls, roofs, all exterior
areas, facilities, improvements, equipment and installations of the Building and
on the Property,  pedestrian  sidewalks,  landscaped and planted areas,  general
signs,  entrances and exits,  roads and other means of access to and serving the
Building and Property,  loading docks and areas,  delivery passages,  truckways,
parking areas, all general signs and all other facilities  available for the use
and/or benefit of all tenants,  their officers,  employees,  agents,  customers,
invitees and licensees.
<PAGE>

1.7     Cost of Additional Services
        ---------------------------

"Cost of Additional  Services" means in the case of Additional Services provided
by the Landlord a reasonable  charge made  therefor by the Landlord  which shall
not exceed the cost of obtaining such services from independent contractors, and
in the case of Additional  Services  provided by  independent  contractors,  the
Landlord's total cost of providing  Additional  Services to the Tenant including
the cost of all  labour  (including  salaries,  wages and fringe  benefits)  and
materials and other direct expenses incurred,  the cost of supervision and other
indirect expenses capable of being allocated thereto (such allocation to be made
upon a reasonable basis) and all other out-of-pocket expenses made in connection
therewith  including  amounts paid to  independent  contractors,  plus in either
case,  an  amount  equal to  fifteen  (15%)  percent  thereof.  A report  of the
Landlord's  independent  chartered  accountant  as to the  amount of any Cost of
Additional   Services  shall  be  conclusive,   should  a  dispute  arise.   The
determination  of the Cost of  Additional  Services  shall exclude any goods and
services  taxes,  sales taxes,  value added taxes or any other taxes  payable or
paid by the Landlord in respect of Additional Services except to the extent that
the  Landlord  does not  receive,  or is not  entitled to  receive,  a credit or
reimbursement for those taxes pursuant to the applicable tax legislation.

1.8     Commencement Date
        -----------------

"Commencement Date" means the  first day of the Lease Term as set out in Article
 3.1.

1.9      Insured Damage
         --------------

"Insured  Damage"  means the part of any damage  occurring  to the  Premises for
which the  Landlord  is  responsible  of which  the cost of  repair is  actually
recoverable  by the Landlord  under a policy of insurance in respect of fire and
other perils from time to time effected by the Landlord.

1.10     Land
         ----
   
"Land"  means  those  lands  described  as  "LOT  2" in  Schedule  "B"  and,  if
consolidated  with those lands at any time, the lands  contiguous to those lands
^on which the 8525  Building  is  located,  which  are  described  as "LOT 1" in
Schedule "B".
    

1.11     Landlord's Architect
         --------------------
<PAGE>

"Landlord's  Architect"  means the architect,  or engineer or quantity  surveyor
selected  by the  Landlord  from  time  to  time  for  the  purposes  of  making
determinations hereunder.

1.12     Lease
         -----
"Lease", "hereof",  "herein",  "hereunder" and similar expressions mean or refer
to this  Lease  and  includes  all  other  Schedules  attached  hereto,  and any
amendments thereof made from time to time by the parties in writing.

1.13     Leasehold Improvements
         ----------------------

"Leasehold  Improvements"  means  all  fixtures,  improvements,   installations,
alterations and additions from time to time made,  erected or installed by or on
behalf of the Tenant or any previous  tenant of the Premises  with the exception
of trade fixtures or furniture and equipment not of the nature of fixtures,  and
includes all wall-to-wall  carpeting  (whether or not supplied by the Landlord),
and all window coverings.

1.14     Normal Business Hours
         ---------------------

"Normal  Business Hours" means the hours from 7:30 a.m. to 6:00 p.m.,  Monday to
Friday,  inclusive,  of each week, statutory holidays excepted.

1.14     Operating Costs
         ---------------

"Operating  Costs" means the total of all  expenses,  costs and outlays of every
nature incurred in the complete  maintenance,  repair,  operation,  insuring and
management  of the Property and the carrying out of the  Landlord's  obligations
under this Lease and similar  tenant leases,  all calculated in accordance  with
generally  accepted  accounting  principles but not including costs incurred for
the original  construction of the Building.  Without  limiting the generality of
the foregoing, Operating Costs includes all expenses, costs and outlays relating
to the following: Common Areas; all utilities not separately metered to tenants;
security;  all insurance  required to be carried by the Landlord pursuant hereto
and all other insurance  relating to the Property as placed by the Landlord from
time  to time in the  Landlord's  discretion,  acting  reasonably;  repairs  and
replacements to the Building and its components  including,  without limitation,
repairs   pursuant  to  Article  8.1,  but  excluding   Structural   Repairs  or
Replacements  and costs exceeding  $1000.00 in any one invoice  relating to each
roof  replacement,  roof  repair or roof  maintenance  expense;  accounting  and
auditing;  all  amounts  paid to third  parties  relating to work  performed  in
relation  to the  Property;  should the  Landlord  elect to manage the  Property
itself a fee for management  and  administration  of the Property  calculated at
four (4%)  percent  of the Base Rent  payable by all  tenants  in the  Building;
supplies  and  materials  used in  relation to  operating  and  maintaining  the
Property;  uniforms;  provision  of a  building  superintendent  and  associated
personnel  including a  reasonable  rental  value for office space used by those
persons and related expenses;  all outdoor maintenance including landscaping and
snow removal;  operation and maintenance of parking area  (including  reasonable
depreciation  and  materials for  resurfacing  the parking  area);  preventative
maintenance and inspection;  cost of consulting  engineering  fees; costs of all
service  contracts,  legal and  consulting  services;  taxes  (other than income
taxes), including:

         Capital tax, any goods and services taxes,  sales taxes,  excise taxes,
         value added taxes or any other taxes payable or paid by the Landlord in
         respect of  Operating  Costs to the extent that the  Landlord  does not
         receive,  or is not entitled to receive a credit or  reimbursement  for
         those taxes pursuant to the applicable tax legislation;

         Cost of each "major expenditure" (as hereinafter  defined) as amortized
         over the period of the Landlord's  reasonable  estimate of the economic
         life of the item acquired,  but not to exceed fifteen (15) years, using
         equal  monthly  installments  of principal  and  interest  at the prime
         commercial  loan  rate  charged  at  the  time  of the  expenditure  to
         borrowers  having the  highest  credit  rating from time to time by the
         main branch,  in British  Columbia of the Landlord's  principal bank at
         the time, per annum compounded semiannually,  where "major expenditure"
         shall mean any single expenditure  incurred during or subsequent to the
         fiscal  period  in  which  the  lease  commences,  for  replacement  of
         machinery, equipment, building elements, repairs, systems or facilities
         in connection with the Property or the Building,  which  expenditure is
         more  than ten  percent  (10%) of the  total  Operating  Costs  for the
         previous  fiscal  period,  or for  modifications  or  additions  to the
         Property  if one of the  principal  purposes  of such  modification  or
         addition was to reduce  energy  consumption  or Operating  Costs or was
         required by government regulation; and
<PAGE>

         Depreciation  of:  (1) the  costs and  expenses  including  repair  and
         replacement,  of all  maintenance  and  cleaning  equipment  and master
         utility meters,  and (2) the costs and expenses  incurred for repairing
         or replacing all other  fixtures,  equipment and facilities  serving or
         comprising  the Building  which by their  nature,  require  periodic or
         substantial  repair or replacement unless they are charged fully in the
         year in which they are incurred,  in accordance  with sound  accounting
         principles.

For greater  certainty,  the  determination of Operating Costs shall exclude any
goods and  services  taxes,  sales  taxes,  value added taxes or any other taxes
payable by the Landlord in respect of Operating  Costs except to the extent that
Landlord  does  not  receive,  or is  not  entitled  to  receive,  a  credit  or
reimbursement for those taxes pursuant to the applicable tax legislation.

To the extent that any component of Operating Costs should be allocated,  in the
reasonable opinion of the Landlord, to the Building or to other buildings on the
Land or to a tenant or one group of tenants the  Landlord  may, but shall not be
obligated to allocate the cost component of Operating  Costs to those  buildings
or tenants alone.

Any  report  of the  Landlord's  auditor  or other  licensed  public  accountant
appointed by the Landlord for the purpose,  shall be conclusive as to the amount
of Operating Costs for any period to which such report relates.

1.16     Permitted Use
         -------------

"Permitted Use" means the use specified in Article 5.3.

1.17     Premises
         --------

"Premises"  means those  portions of the Building  shown outlined in heavy black
outline on the floor plans  attached as Schedule "A2" hereto.  The exterior face
of the Building and any space in the Premises used for stairways or  passageways
to other premises,  stacks,  shafts,  pipes,  conduits,  ducts or other building
facilities,  the  heating,  electrical,  plumbing,  air  conditioning  and other
systems in the Building and the use thereof,  as well as access thereto  through
the Premises for the purpose of use,  operation,  maintenance,  replacement  and
repair, are expressly excluded from the Premises and reserved to the Landlord.
<PAGE>

1.18     Prime Rate
         ----------

"Prime Rate" means that rate of interest announced from time to time by the main
branch in the Province of British  Columbia of the Landlord's  principle bank at
the time, as a reference rate then in effect for  determining  interest rates on
Canadian Dollar denominated commercial loans made in Canada.

1.19     Property
         --------
   
"Property"  means the Land and Building  referred to herein  (including the land
contiguous to the Land, on which the 8525 Building is  located^described as "LOT
1" on  Schedule  "B", if  consolidated  with the Land at any time) and all other
buildings  and  improvements  on the  Land as are  from  time  to time  existing
thereon.
    

1.20     Proportionate Share
         -------------------

When used herein,  "Proportionate  Share" means the ratio  (during each calendar
year) which the Rentable Area of the Premises  bears to the total  Rentable Area
in the  Building  if the  Building  is  fully  occupied  and if it is not  fully
occupied  "Proportionate  Share" means the ratio (during each calendar year) the
Rentable  Area of the Premises  bears to 95% of the total  Rentable  Area in the
Building.
1.21     Rent
         ----

"Rent" means the Base Rent and the Additional Rent.

1.22     Rentable Area
         -------------
"Rentable  Area" as used herein shall refer to all floor area  measured from the
exterior face of the predominant building line in the case of exterior walls and
to the centre of partitions  that separate the Premises from adjoining  premises
or Common Areas and includes,  without limitation,  all stairways,  passageways,
mechanical rooms and washrooms,  and other  facilities  exclusively or primarily
serving the  Premises.  There shall be no  deductions  for  vestibules  or other
recessed areas inside the said predominant building line, or for columns, ducts,
projections  or  other  structural  elements  necessary  to  the  Building.  The
"Rentable Area" in the Building does not include Common Areas.
<PAGE>

1.23     Sales Tax
         ---------

"Sales Tax" shall have the meaning set out in Article 4.9.

1.24     Structural Repairs or Replacements
         ----------------------------------

"Structural Repairs or Replacements" means any repairs, replacements, changes or
alterations  required to be made to the foundations,  concrete or steel columns,
bearing walls, roof joists and decking  (excluding  membrane) and floor decks or
slabs of the Premises.

1.25     Taxes
         -----

"Taxes"  means all taxes,  rates,  duties,  levies and  assessments  whatsoever,
whether municipal, provincial, federal or otherwise, levied, imposed or assessed
against the Building, the Land and any Leasehold Improvements or any of them, or
upon the  Landlord in respect  thereof or from time to time  levied,  imposed or
assessed in lieu  thereof,  including  those  levied,  imposed or  assessed  for
education, schools and local improvements,  and including all costs and expenses
(including  legal and other  professional  fees and  interest  and  penalties on
deferred  payments)  incurred  by the  Landlord  in good  faith  in  contesting,
resisting or appealing any taxes,  rates,  duties,  levies or  assessments,  but
excluding  taxes and  license  fees in  respect  of any  business  carried on by
tenants and  occupants  of the  Building  (including  the  Landlord),  income or
profits  taxes upon the income of the  Landlord to the extent such taxes are not
levied in lieu of taxes,  rates,  duties,  levies and  assessments  against  the
Building,  the Land or  Leasehold  Improvements  or upon the Landlord in respect
thereof  and Sales Tax  imposed or levied  against  the Tenant in respect of the
Rent or Cost of Additional Services payable by the Tenant to the Landlord or the
provision of rental space by the Landlord to the Tenant,  and shall also include
any and all  taxes  which  may in the  future  be  levied  in lieu of  Taxes  as
hereinbefore defined. 1.26 Term

"Term" means  the term of the Lease  set forth in Article 3.1 and any  extension
 thereof and any period of permitted overholding.


                                        2
                               PREMISES AND INTENT


2.1      Premises
         --------

In consideration of the rents, covenants,  agreements and conditions hereinafter
reserved and contained on the part of the Tenant to be respectively  paid, kept,
observed and performed,  the Landlord  hereby demises and leases unto the Tenant
the Premises as  generally  shown  outlined in heavy black  outline on the floor
plans  attached  hereto as Schedule  "A2".  The Rentable Area of the Premises is
fifty seven thousand  eight hundred thirty seven (57,837)  square feet according
to the final  determination  by the  Landlord's  Architect.  The  certificate of
measurement prepared by the Landlord's Architect shall be final and binding upon
the parties hereto as to such Rentable Area.

2.2      Intent
         ------

The Tenant  acknowledges  and agrees that this Lease shall be a  completely  net
lease for the Landlord except as expressly herein set out and the Landlord shall
not be responsible during the Term hereof for any costs,  charges,  expenses and
outlays of any nature  whatsoever  arising from or relating to the Premises,  or
the contents thereof and without  limiting the generality of the foregoing,  the
Tenant shall be liable for the payment of all charges,  impositions and expenses
of every nature and kind  relating to the Premises and the contents  thereof and
its Proportionate Share of Operating Costs and Taxes as defined herein.
<PAGE>

2.3      Parking
         -------

The Tenant  will be entitled  to 1 reserved  parking  stall for every 260 square
feet of the Rentable  Area at any one time at such  locations as may be mutually
agreed  from time to time by the  Landlord  and the Tenant  provided  that it is
hereby agreed and  understood by the Tenant that in no way shall the Landlord be
responsible for monitoring the use of or the policing of such parking.

                                        3
                                      TERM

3.1      Term
         ----

The Term of this Lease  shall be ten (10) years and shall  commence  on the 15th
day of May, 1996 (the  "Commencement  Date") to be fully  completed and ended on
the 14th day of May,  2006.  In the event the  Premises  should not be ready for
occupancy by  Commencement  Date for any reason  Landlord shall not be liable or
responsible for any claims, damages or liabilities in connection therewith or by
reason  thereof,  subject  to the  terms  contained  in the  Agreement  to Lease
accepted  June 20, 1995 between the Landlord and the Tenant (the  "Agreement  to
Lease").  Should  the  Term of this  Lease  commence  on a date  other  than the
Commencement Date the Landlord and the Tenant will, at the request of the other,
execute a declaration specifying a revised commencement date of the Term of this
Lease and in such event,  rental under this Lease shall not  commence  until the
said  revised  commencement  date which  shall be deemed to be the  Commencement
Date,  and the  stated  Term in this  Lease  shall  thereupon  commence  and the
expiration date shall be extended so as to give effect to the full stated Term.


                                        4
                                      RENT

4.1      Base Rent
         ---------

The Tenant  shall pay to the  Landlord a base annual rent  (herein  called "Base
Rent") throughout the Term as follows:

(a)      $13.75 per square foot of Rentable Area per year, completely net to the
         Landlord as set out in Article 2.2 of this Lease, during and throughout
         the first five years of the Term,  yielding  and paying to the Landlord
         $795,258.75 per annum, payable as follows:

         (i)       $36,342.47,  representing  17/31 of $66,271.56, in advance on
                   May 15, 1996;

         (ii)     59 equal consecutive  monthly installments  of $66,271.56 each
                  in advance on the first day of  each  month commencing on June
                  1, 1996 and ending on April 1, 2001; and

         (iii)    $29,929.09,  representing  14/31 of $66,271.56, in  advance o
                  May 1, 2001; and

(b)      $15.00 per square foot of Rentable Area per year, completely net to the
         Landlord as set out in Article 2.2 of this Lease, during and throughout
         the last five years of the Term,  yielding  and paying to the  Landlord
         $867,555 per annum, payable as follows:

         (i)      $39,646.33, representing  17/31 of $72,296.25,  in advance  on
                  May 15, 2001;

         (ii)     59 equal consecutive  monthly installments of  $72,296.25 each
                  inadvance on the first day of each month commencing on June 1,
                  2001 and ending on April 1, 2006; and

         (iii)    $32,649.92,  representing  14/31 of $72,296.25,  in advance on
                  May 1, 2006.

<PAGE>
The Tenant agrees to pay such Base Rent,  together  with any  adjustment of rent
provided for herein then in effect, to the Landlord at the Landlord's address as
provided herein (or such other address as may be designated by the Landlord from
time to time) monthly in advance  without  demand.  If the Term of this Lease as
heretofore  established  commences  on other  than the  first  day of a month or
terminates  on  other  than the last  day of a  month, then the  installment  or
installments  so prorated, together with prorated installments of all other sums
due  hereunder at the time and in the manner  provided for payment of Base Rent,
shall be paid in advance without demand.

4.2      Additional Rent
         ---------------

From and after  Commencement  Date, the Tenant shall pay as Additional  Rent its
Proportionate  Share of Operating  Costs and of Taxes,  and all other sums to be
paid  by the  Tenant  hereunder  including,  without  limitation,  the  Cost  of
Additional  Services,  if any, and the Landlord shall have the same remedies for
default for the payment of  Additional  Rent as are available to the Landlord in
the case of default in the payment of Base Rent.

4.3      Estimate of Additional Rent
         ---------------------------

Prior to the Commencement Date, and thereafter prior to the commencement of each
calendar year of the Tenant's  occupancy the Landlord  shall provide an estimate
of Operating  Costs and of Taxes for the portion of the  calendar  year in which
Commencement Date occurs and thereafter for each calendar year. The Tenant shall
pay as Additional Rent its Proportionate Share of such estimate in equal monthly
installments (or prorated installments under Article 4.1 hereof) at the time and
in the manner provided for payment of Base Rent.

4.4      Adjustment for Additional Rent
         ------------------------------

Within one hundred and fifty (150) days, or as soon thereafter as possible after
the  conclusion  of each calendar  year of the Term hereof,  the Landlord  shall
furnish to the Tenant a statement of the Landlord's  actual  Operating Costs and
Taxes for the said calendar  year or portion  thereof as the case may be. A lump
sum payment  will be made from the  Landlord to the Tenant or from the Tenant to
the Landlord,  equal to the Proportionate Share of an amount by which the actual
Operating  Costs and Taxes is less than the estimated  Operating Costs and Taxes
or equal to the  Proportionate  Share of an amount by which the actual Operating
Costs and Taxes exceeds the estimated Operating Costs and Taxes respectively.

4.5      Building Not Fully Occupied
         ---------------------------

Notwithstanding anything herein otherwise expressed or implied it is agreed that
in the  event  the  Building  is not 90%  occupied  during  any year of the Term
hereof,  an adjustment  shall be made in computing the Operating Costs and Taxes
for such year so that the  Operating  Costs and Taxes shall be computed for such
year as though the Building has been 90% occupied during such year.

4.6      Direct Assessment
         -----------------

The Tenant covenants to pay promptly:

(a)      when  billed,  all taxes,  rates  duties or charges  levied  imposed or
         assessed  on  its  personal  property,  its  use or  occupation  of the
         Premises,  the business  carried on therein,  all fixtures,  equipment,
         machinery of the Tenant therein or from time to time levied, imposed or
         assessed in the future in lieu thereof;  and Taxes  levied,  imposed or
         assessed on all Leasehold Improvements in the Premises; and

(b)      in the  event  of a  direct  assessment  of  Taxes  in  respect  of the
         Premises,  the amount of such  direct  assessment,  when billed (and to
         provide a copy of such assessment  notice to the Landlord with evidence
         of such payment), plus its Proportionate Share of all Taxes on areas of
         the Property not demised specifically to tenants.

<PAGE>

4.7      Landlord Tax Obligation
         -----------------------

The Landlord  covenants  with the Tenant,  subject to the provisions of Articles
4.2 and 4.6, to pay the Taxes  promptly  when due. The  Landlord  shall have the
right to appeal  any  taxes  assessed  or levied  against  the  Property  or the
Premises but shall not be obligated to so do. The cost  incurred by the Landlord
to contest the Taxes shall be included in Operating Costs.

4.8      Amounts Past Due
         ----------------

If the Tenant fails to pay, when the same is due and payable, any Base Rent, any
Additional  Rent or any other  amounts  payable by the Tenant  under this Lease,
such unpaid amounts shall bear interest from the due date thereof to the date of
payment at a rate per annum which is six (6%) percentage  points above the Prime
Rate.

4.9      Value-Added Tax
         ---------------

Notwithstanding  anything herein contained to the contrary, the Landlord and the
Tenant  acknowledge  that the Rent and the Cost of  Additional  Services and any
other  amounts  payable by the Tenant to the Landlord are exclusive of any goods
and services taxes,  sales taxes,  excise taxes,  value added taxes or any other
taxes imposed in respect of the Rent and Cost of Additional  Services payable by
the Tenant to the  Landlord for the  provision  of rental  space and  Additional
Services  by the  Landlord to the Tenant  under this Lease  ("Sales  Tax").  The
Tenant shall pay to the Landlord an amount equal to any Sales Tax imposed on the
Tenant  which the  Landlord is  obligated to collect from the Tenant or which is
assessed  upon the  Landlord  with  respect  to the Rent and Cost of  Additional
Services payable by the Tenant to the Landlord pursuant to this Lease in respect
of the rental of space and  provision of  Additional  Services  under this Lease
against,  it being the  intention of the Landlord and the Tenant that the Tenant
shall bear full responsibility for payment of Sales Tax in respect of the rental
of space and the provision of Additional  Services by the Landlord to the Tenant
hereunder.  The amount of Sales Tax so payable by the Tenant shall be calculated
by the Landlord in accordance with the applicable  legislation and shall be paid
to the Landlord at the same time as the amounts  against which that Sales Tax is
being applied are payable to the Landlord  under the terms of this Lease or upon
demand at such other time or times as the Landlord from time to time determines.
Despite any other  provision  of this Lease,  the amounts  payable by the Tenant
under this paragraph shall be deemed not to be rent, but the Landlord shall have
all of the same remedies for and recovery of such amounts as it has for recovery
of Base Rent under this Lease.

4.10     Waiver of Offset
         ----------------

The Tenant hereby  waives and renounces any and all existing and future  claims,
offsets and compensation against any Rent and agrees to pay such Rent regardless
of any claim,  offset or compensation  which may be asserted by the Tenant or on
its behalf.

4.11     Receipts, etc.
         --------------

Whenever  requested  by the  Landlord the Tenant will deliver to it receipts for
payments of all taxes,  rates,  duties,  levies and  assessments  payable by the
Tenant  pursuant to Article 4.6(a) hereof and furnish such other  information in
connection therewith as the Landlord may reasonably require.

4.12     Allocation of Taxes
         -------------------

If a separate allocation of Taxes is not issued by the relevant taxing authority
with respect to the Building on the Land or to any Leasehold  Improvements,  the
Landlord or the Tenant may from time to time apply to the taxing authority for a
determination of the portion of Taxes  attributable to the Building or Leasehold
Improvements,  which  determination shall be conclusive for the purposes of this
Article. In the event that no such determination may be obtained from the taxing
authority, the Landlord shall establish the portion of Taxes attributable to the
Building or Leasehold Improvements using the then current established principles
of assessment used by the taxing authority,  or such other method which is fair,
reasonable and equitable as determined by the Landlord.
<PAGE>
                                        5
                               TENANT'S COVENANTS

The Tenant  covenants and agrees with and  represents as follows to the Landlord
and  acknowledges  that the Landlord is relying on such  covenants,  agreements,
representations and warranties in connection with the leasing of the Premises to
the Tenant:

5.1      Occupancy
         ---------

From the  commencement of, and throughout,  the Term to continuously  occupy the
Premises  and to carry on therein the  business  comprising  the  Permitted  Use
subject to the terms hereof.

5.2      Rent
         ----

To pay the Rent hereby  reserved,  and all other sums  payable  hereunder to the
Landlord,  promptly  on the days and at the  times and in the  manner  specified
herein, without demand, deduction or set-off.

5.3      Permitted Use
         -------------

To use the Premises only for the purpose of offices,  research and  development,
manufacture and distribution of computer components and related products and not
to use or  permit  to be used the  Premises  or any part  thereof  for any other
purpose  or  business  whatsoever  without  the  prior  written  consent  of the
Landlord. The Tenant will utilize the Premises for the Permitted Use in an up to
date first class and reputable manner in the best interests of the Building as a
whole.  The Tenant  acknowledges  the  Landlord  will not have any  liability or
responsibility  to the Tenant for the breach,  non-observance or other violation
of any other tenant in the Building of any  obligations  or  provisions  in this
Lease.

5.4      Waste and Nuisance
         ------------------

Not to commit or permit any waste, including waste as it is defined in the Waste
Management Act,  S.B.C.  1979 C.41., as amended from time to time, to be brought
upon,  kept,  or used in or  about  the  Premises  by the  Tenant,  its  agents,
employees,  contractors  or invitees,  without the prior written  consent of the
Landlord,  not to commit or permit any  damage to the  Premises,  including  the
Leasehold  Improvements and trade fixtures therein,  not to commit or permit any
nuisance therein or any use or manner of use causing  annoyance to other tenants
and  occupants  of the  Building or the Land and not to use or permit to be used
any part of the Premises  for any trade or business  which is, in the opinion of
the Landlord, dangerous, noxious or offensive; not cause or suffer or permit any
waste,  oil or grease or any  harmful,  objectionable,  dangerous,  poisonous or
explosive  matter  or  substance  to be  discharged  into  the  Premises  or the
Property;  and not to place any objects on or otherwise  howsoever  obstruct the
heating or air conditioning vents within the Premises.

If the presence of any waste on the Premises results in any contamination of the
Premises or Property, subject to the Landlord's prior approval, the Tenant shall
promptly  take all actions at its sole  expense as are  necessary  to return the
Premises and Property to the condition existing prior to the introduction of any
such waste to the Premises.

5.5      Floor Loads
         -----------

Not to place a load upon any portion of any floor of the Premises  which exceeds
the floor load which the area of such floor being  loaded was  designed to carry
having  regard to the  loading  of  adjacent  areas and that which is allowed by
code.  The Landlord  reserves the right to prescribe  the weight and position of
all  safes  and  heavy  installation  which  the  Tenant  wishes to place in the
Premises,  so as to distribute  properly the weight thereof and the Tenant shall
pay for all costs  incurred by the  Landlord  and the  Landlord's  Architect  in
making such assessment.  The Tenant shall repair any damage done in the Premises
or the  Building by reason of any  excessive  weight  placed in the  Premises or
excessive vibration caused in the Premises.
<PAGE>

5.6      Insurance Risks
         ---------------

Not to do,  omit to do or  permit to be done upon the  Premises  anything  which
would or might cause the Landlord's cost of insurance  (whether fire,  liability
or other) to be increased (and,  without  waiving the foregoing  prohibition the
Landlord may demand,  and the Tenant shall pay to the Landlord upon demand,  the
amount of any such  increase  of cost  caused by  anything so done or omitted or
permitted  to be done or  omitted)  or which  would or might cause any policy of
insurance to be subject to cancellation or refusal of placement or renewal.

5.7      Noxious Fumes and Odours
         ------------------------

To use the Premises so that noxious or objectionable  fumes,  vapours and odours
will not occur beyond the extent to which they are  discharged  or eliminated by
means of the flues and other  devices  provided in the  Building by the Landlord
and shall prevent any such noxious or  objectionable  fumes,  vapours and odours
from entering into the air  conditioning or being discharged into other vents or
flues of the  Building  or  annoying  any of the  tenants in the  Building.  Any
discharge  of fumes,  vapours  and odours  shall be  permitted  only during such
period or periods,  to such  extent,  in such  conditions  and in such manner as
directed by the Landlord from time to time.

5.8      Condition
         ---------

Not to permit,  in the opinion of the Landlord,  the Premises to become  untidy,
unsightly,  offensive or hazardous or permit unreasonable quantities of waste or
refuse to accumulate therein. The Tenant shall store all such garbage, refuse or
other objectionable  material  (including  commercial garbage containers) within
the Premises and dispose of such garbage on a regular basis.

5.9      By-Laws
         -------

The Tenant shall comply with all laws relating to its use of the  Premises,  its
activities,  its business  and its  operation  at the  Premises.  The Tenant has
received no notice,  requisition,  requirement or order relating thereto and the
Tenant does not know or have reasonable  grounds to know of any acts, matters or
things  which may give rise to any  notice,  requisition,  requirement  or order
being  issued in  respect  of any of the  Tenant's  activities  or its  proposed
activities, businesses or operations.

The  Tenant  shall  comply at its own  expense  with all  requirements  and laws
including, without limitation,  municipal,  provincial, federal, sanitary, fire,
building and safety statutes, laws, bylaws, regulations,  ordinances, orders and
requirements pertaining to the operation and use of the Premises and the conduct
of business  therein  (including,  without  limitation,  obtaining all necessary
permits,  licences and approvals),  the condition of the Leasehold Improvements,
trade fixtures,  furniture and equipment installed by the Tenant therein and the
making by the  Tenant of any  repairs,  changes or  improvements  therein or any
other matter pertaining to the Premises or the Tenant and all laws,  ordinances,
regulations or requirements pertaining to solid or other wastes,  chemicals, oil
and gas, toxic, corrosive or hazardous materials,  air, water (surface or ground
water) or noise pollution and the storage, handling, use or disposal of any such
material,  as well as all rules and  regulations  of the Canadian  Board of Fire
Underwriters,  or any successor body and with the  requirements of all insurance
companies having policies of any kind whatsoever in effect covering the Building
which are communicated to the Tenant.
<PAGE>

5.10     Rules and Regulations
         ---------------------

To observe,  and to cause its  employees,  invitees and all others over whom the
Tenant can  reasonably be expected to exercise  control to observe the Rules and
Regulations  attached  as  Schedule  "C"  hereto,  and such  further  and  other
reasonable  Rules and  Regulations  and  amendments  and changes  therein as may
hereafter be made by the  Landlord of which notice in writing  shall be given to
the Tenant and all such Rules and Regulations shall be deemed to be incorporated
into  and  form  part of this  Lease.  For the  enforcement  of such  Rules  and
Regulations,  the Landlord shall have available to it all remedies in this Lease
provided for a breach thereof and all legal remedies whether or not provided for
in this Lease, both at law and in equity.  The Landlord shall not be responsible
or liable to the Tenant for the  non-observance or violation by any other tenant
of any such  Rules and  Regulations  or the  non-enforcement  as  against  other
tenants of such Rules and  Regulations  or any loss or damage arising out of the
same.

5.11     Surrender, Overholding
         ----------------------

That upon the  expiration or other  termination  of the Term of this Lease,  the
Tenant shall quit and surrender the Premises in vacant and clean  possession and
in good order, repair,  decoration,  and condition (subject to the exceptions to
the Tenant's  repair  obligations  contained in Article 8.2(a) hereof) and shall
remove all its property  therefrom,  except as otherwise provided in this Lease.
The Tenant's  obligation to observe or perform this  covenant  shall survive the
expiration or other  termination of the Term of this Lease.  If the Tenant shall
continue  to occupy the  Premises  after the  expiration  of this Lease  without
further  written  agreement and without  objection by the  Landlord,  the Tenant
shall be a  month-to-month  tenant at double the Base Rent  provided  for herein
(plus  Additional  Rent) and  (except as to length of tenancy) on and subject to
the provisions and conditions herein set out.

5.12     Exterior Signage
         ----------------

The Landlord  grants to the Tenant the right to utilize,  during the Term,  that
portion of the fascia of the Building  which the Landlord has  allocated for the
Tenant's   signage  and  the  Building   directory,   for  the  installation  of
identification  signs of the Tenant,  such  installation to be at the expense of
the  Landlord  and the  design  and  lettering  of such signs and the manner and
timing of the  installation  thereof  shall comply with the  Landlord's  signage
policy for the  Building and shall be subject to approval of the City of Burnaby
and the Landlord's prior approval which shall not be unreasonably  withheld.  On
the expiration or sooner  termination  of the Term,  such sign or signs shall be
removed by the Tenant at its sole cost,  risk and expense and any damage  caused
by such removal shall forthwith be repaired by the Tenant.  Except as aforesaid,
the Tenant shall not paint,  display,  inscribe,  place or affix any other sign,
symbol,  notice or lettering of any kind anywhere outside the Premises  (whether
on the  outside or inside of the  Building)  or within the  Premises so as to be
visible from the outside of the Premises.
<PAGE>

5.13     Inspection and Access
         ---------------------

Subject  to the  Landlord  giving the Tenant  reasonable  written  notice of its
intention  to perform any of the  aftermentioned  work to permit the Landlord at
any time  and from  time to time to  enter  and to have its  authorized  agents,
employees and contractors  enter the Premises for the purpose of (i) inspection,
maintenance,  making  repairs,  alterations  or  improvements  to the  Premises,
adjoining  premises or the  Building,  or to have  access to or make  changes in
utilities  and  services   (including   underfloor  and  overhead   ducts,   air
conditioning,  heating, plumbing, electrical and telephone facilities and access
panels,  all of which the Tenant  agrees not to obstruct)  and (ii) to determine
the electric  light and power  consumption by the Tenant in the Premises and the
Tenant shall provide free and unhampered access for such purposes, and shall not
be entitled to compensation  for any  inconvenience,  nuisance and discomfort or
loss caused thereby,  but the Landlord in exercising its rights  hereunder shall
proceed to the extent  reasonably  possible so as to minimize  interference with
the Tenant's  use and  enjoyment of the  Premises.  The Landlord  shall give the
Tenant not less that 14 days prior  written  notice in the event that any of the
aforesaid maintenance or repairs will interfere with the Tenant's  manufacturing
process.

5.14     Exhibiting Premises
         -------------------

To allow the  Landlord or its agents  acting  reasonably,  upon 2 business  days
prior written notice,  to enter and exhibit the Premises to prospective  tenants
or  purchasers  of the Property or the Premises  during  Normal  Business  Hours
during  the Term  hereof,  and place upon the  Premises  a notice of  reasonable
dimensions and  reasonably  placed stating that the Property or the Premises are
for sale or for let,  which  notice  the  Tenant  shall not remove or obscure or
permit to be removed or obscured.

5.15     Name of Building
         ----------------

Not to refer to the Building by any name other than that designated from time to
time by the  Landlord,  nor to use such name for any purpose  other than that of
the business address of the Tenant.

5.16     Acceptance of Premises
         ----------------------

The Tenant will have the  opportunity to examine the Premises within the 180 day
period  provided for in clause 8 of the  Agreement to Lease and shall notify the
landlord  within this time period of any defects or  omissions  which are not in
accordance  with the Agreement to Lease,  after which time the Premises shall be
deemed to be in good order and satisfactory  condition and that all alterations,
remodelling,  decorating and installation of equipment and fixtures  required to
be done by the Landlord have been  satisfactorily  completed  save only for such
list in writing prepared by the Tenant during the 180 day period provided for in
the Agreement to Lease.  Any dispute as to any aspects of the Landlord's Work or
completion or adequacy of the  Building,  the Premises or any part thereof shall
be determined by the Landlord's Architect.
<PAGE>

5.17     No Auction
         ----------

The Tenant shall not at any time during the Term of this Lease,  permit any sale
by  auction to be held  within the  Premises  or upon the  Property  or any part
thereof.

5.18     Yard and Parking Obstruction
         ----------------------------

The Tenant  shall not  place,  nor  suffer or permit  its  customers,  invitees,
licensees, agents or servants to place any materials in the yard or yards of the
Property or the  driveways,  parking or Common Areas  thereof and shall cause no
obstruction  to  vehicles  operating  on the said  driveways,  parking or Common
Areas.

                                        6
                              LANDLORD'S COVENANTS

The Landlord covenants with the Tenant as follows:

6.1      Quiet Enjoyment
         ---------------

That the Tenant  paying the Rent hereby  reserved at the times and in the manner
aforesaid  and  observing  and  performing  each  and  every  of the  covenants,
conditions,  restrictions  and  stipulations  by the  Tenant to be  observed  or
performed shall and may peaceably and quietly possess and enjoy the Premises for
the Term hereby granted without any interruption  from the Landlord or any other
person lawfully claiming by, through, or under it.


                                        7
                                   UTILITIES

The Landlord and Tenant further covenant and agree as follows:

7.1      Utilities
         ---------

The Tenant shall pay for the cost of all  utilities  provided for its  exclusive
use in  the  Premises,  including  without  restricting  the  generality  of the
foregoing gas, water,  electricity,  telephone and communication service charges
and/or rates relating to services  and/or  utilities  provided for the exclusive
use of the Tenant in respect of the  Tenant's  occupation  of the  Premises  and
operation of its business carried on therein or therefrom,  including laboratory
work and any special systems servicing its own computers or any other machinery.

7.2      Use of Water
         ------------

The  Tenant  shall  install  at  the  Tenant's  expense  a  domestic  meter  for
measurement or checking of the Tenant's water  consumption  and the Tenant shall
pay to the  Landlord  (or, as required by law,  directly to the  supplier of the
water)  as and when due from  time to time any and all  water  charges  for such
water consumption.

7.3      Energy Conservation
         -------------------

The Tenant covenants with the Landlord (subject to the Tenant's permitted use of
the Premises):

(a)      that the Tenant  will  cooperate with the Landlord  in the conservation
         of all forms of energy in the Building,  including  without  limitation
         the Premises;

(b)      that  the  Tenant will comply with  all laws, by-laws, regulations  and
         orders  relating  to the  conservation  of  energy  and  affecting  the
         Premises or the Building;
<PAGE>

(c)      that  the  Tenant  will at its own  cost and  expense  comply  with all
         reasonable  requests  and demands of the  Landlord  made with a view to
         such  energy  conservation  provided  that  such  requests  are made in
         accordance with good management practice and would be made by a prudent
         owner of like property of like age; and

(d)      that any and all costs and expenses paid or incurred by the Landlord in
         complying with such laws,  by-laws,  regulations and orders,  so far as
         the same shall apply to or reasonably be apportioned to the Building by
         the Landlord, shall be included in the Landlord's Operating Costs.

The Landlord  shall not be liable to the Tenant in any way for any loss,  costs,
damages or expenses whether direct or consequential  paid,  suffered or incurred
by the  Tenant as a result of any  reduction  in the  services  provided  by the
Landlord  to the  Tenant  or to  the  Building  as a  result  of the  Landlord's
compliance with such laws, by-laws, regulations or orders.


                                        8
                         REPAIR, DAMAGE AND DESTRUCTION

The Landlord and Tenant further covenant and agree as follows:

8.1      Landlord's Repairs
         ------------------

The Landlord  covenants  with the Tenant  subject to Article  8.3(b) and Article
11.3  hereof and except for  reasonable  wear and tear and damage not covered by
insurance  normally  maintained  by  prudent  landlords,  to keep in a good  and
substantial state of repair the exterior walls, roof,  foundations,  and bearing
structure of the Building.

8.2      Tenant's Repairs
         ----------------

The Tenant covenants with the Landlord:

(a)      subject to Article  8.3 (b),  at its own cost and  expense to keep in a
         good and  substantial  state of repair and  decoration  to at least the
         standard existing at the beginning of the Term, the Premises  including
         all Leasehold  Improvements,  all  facilities  exclusively or primarily
         serving  the  Premises,  and all trade  fixtures  therein and all glass
         therein,  and without  limiting the  generality of the  foregoing,  the
         Tenant shall:

         (i)      maintain in good operating  condition to the  satisfaction  of
                  the Landlord the water, sewer and gas and all other mechanical
                  systems  serving  the  Tenant's  Premises.  The  Tenant  shall
                  maintain service  contracts for the inspection and maintenance
                  of  the  heating,   ventilating  and  air  conditioning  units
                  (whether  located on the roof or within the Premises) and file
                  copies of such contracts with the Landlord;

         (ii)     repair or replace to the  satisfaction  of the  Landlord,  the
                  glass,  locks and doors (including  overhead doors) in or upon
                  the Premises which become damaged or broken; and

         (iii)    replace and maintain (at its expense as is necessary from time
                  to time) all light fixtures, bulbs, tubes, ballasts,  starters
                  and fuses.

(b)      that  upon 2 days  prior  notice  to the  Tenant  (except  for cases of
         emergency), the Landlord may from time to time enter and view the state
         of  repair,  and that the Tenant  will  repair  according  to notice in
         writing;

(c)      that if any  part of the  Building  including  without  limitation  the
         structure or the  structural  elements of the Building,  or the systems
         for the  provision  of utilities or services  fall into  disrepair,  or
         become  damaged or destroyed  through the  negligence  or misuse of the
         Tenant or of its employees, invitees or others over whom the Tenant can
         reasonably be expected to exercise  control,  the expense of repairs or
         replacements thereto necessitated thereby, other than to the extent the
         same is recovered under a policy of insurance required to be carried by
         the Landlord  hereunder,  shall be paid by the Tenant at the Landlord's
         actual cost plus fifteen (15%) percent thereof; and
<PAGE>

(d)      that the Tenant will notify the  Landlord  immediately  upon the Tenant
         becoming aware of any defect in the Premises or of any other  condition
         which may cause damage to the Premises or the Building.

8.3      Abatement and Termination
         -------------------------

It is agreed between the Landlord and the Tenant that:

         (a)      (i)  In the  event  of  partial  destruction  (as  hereinafter
                  defined) of the Premises by fire,  the elements or other cause
                  or casualty,  then in such event,  if the destruction is such,
                  in the opinion of the Landlord's Architect,  that the Premises
                  cannot be used for the Tenant's  business until repaired,  the
                  Base  Rent and  Additional  Rent  shall  abate as  hereinafter
                  provided until the repair has been made.

                  If  the  destruction  is  such  that,  in the  opinion  of the
                  Landlord's  Architect,  the Premises may be partially used for
                  the Tenant's  business while the repairs are being made,  then
                  the  Base  Rent  and  Additional   Rent  shall  abate  in  the
                  proportion  that the part of the  Premises  rendered  unusable
                  bears to the whole of the  Premises,  PROVIDED  ALWAYS that if
                  the  part  rendered  unusable  exceeds  one-half  (1/2) of the
                  Rentable Area of the Premises there shall be a total abatement
                  of Base Rent and  Additional  Rent until the repairs have been
                  made unless the Tenant,  with the  permission of the Landlord,
                  in fact uses the undamaged part in which case the Tenant shall
                  pay  proportionate  Base Rent and Additional Rent for the part
                  so used  (being  in the same  proportion  to the Base Rent and
                  Additional Rent, as the area in square feet of the part of the
                  Premises  being  used  bears  to  the  Rentable  Area  of  the
                  Premises).  "Partial destruction" shall mean any damage to the
                  Premises less than total destruction (as hereinafter defined),
                  but which renders all or any part of the Premises  temporarily
                  unfit  for use by the  Tenant  for the  Tenant's  business.  A
                  certificate  of the  Landlord's  Architect  as to whether  the
                  whole or a part of the  Premises  is  rendered  unusable,  and
                  certifying the extent of the part rendered unusable,  shall be
                  binding and  conclusive  upon both Landlord and Tenant for the
                  purposes hereof. If the partial destruction is repaired within
                  fifteen (15) days after the date of destruction there shall be
                  no abatement of Rent.

         (i)      In the event of partial destruction (as  hereinbefore defined
                  the Landlord  shall, to the extent of proceeds of insurance it
                  receives,  repair and restore the  Premises  according  to the
                  nature of the damage with all reasonable diligence, except for
                  improvements installed by or on behalf of the Tenant which the
                  Tenant   shall  repair  and   restore,   in  both  cases,   to
                  substantially   the   condition   the   Premises   and   those
                  improvements  were  in  immediately  before  such  destruction
                  occurred,  but to the extent that any part of the  Premises is
                  not  reasonably  capable of use by reason of damage  which the
                  Tenant is obligated to repair hereunder, any abatement of Rent
                  to which the Tenant is otherwise  entitled hereunder shall not
                  extend later than the time by which, in the reasonable opinion
                  of the  Landlord,  repairs  by the  Tenant  ought to have been
                  completed  with  reasonable  diligence.   To  the  extent  the
                  Landlord receives proceeds of insurance  respecting damage the
                  Tenant  is to  repair,  the  Landlord  will  turn  over  those
                  proceeds upon the Tenant completing such repair.
                  Notwithstanding  anything herein  otherwise  contained,  there
                  shall be no  abatement  of Rent if the  damage  is  caused  by
                  willful act or neglect of the Tenant.

(b)       (i)     In the event of the total destruction (as hereinafter defined)
                  of the  Premises  by fire,  the  elements  or  other  cause or
                  casualty,  then in such event the  Landlord may at its option,
                  to be  exercised  within  sixty  (60) days of the date of such
                  total  destruction,  terminate  this Lease  effective from the
<PAGE>
                  date  when  such   destruction   occurs.   Upon  the  Landlord
                  exercising such option the Tenant shall immediately  surrender
                  the Premises and all its interest  therein to the Landlord and
                  the Tenant shall pay Base Rent and Additional Rent to the time
                  of  such   destruction  and  the  Landlord  may  re-enter  and
                  repossess  the Premises  discharged  of this Lease.  Upon such
                  termination the Tenant shall remain liable to the Landlord for
                  all sums  accrued  due to the  Landlord  pursuant to the terms
                  hereof to the date of such  destruction.  If the Landlord does
                  not  exercise  its option of  termination  the  provisions  of
                  repair and restoration set forth in Article 8.3 (a) (ii) shall
                  apply.  "Total  destruction"  shall  mean  such  damage to the
                  Premises that renders same unfit for use by the Tenant for the
                  Tenant's  business  and which  cannot  reasonably  be repaired
                  within  six (6) months of the date of the  destruction  to the
                  state  wherein the Tenant could use  substantially  all of the
                  Premises for its  business.  A certificate  of the  Landlord's
                  Architect  certifying  that "total  destruction"  has occurred
                  shall be binding and conclusive  upon both Landlord and Tenant
                  for the purposes hereof.


         (i)      Notwithstanding  the  foregoing  provisions  concerning  total
                  or partial destruction of the Premises,  in the event of total
                  or partial  destruction  of the Building of which the Premises
                  form a part (and whether or not the Premises are destroyed) to
                  such a material extent or of such a nature that in the opinion
                  of the Landlord the damage to the Building  cannot be repaired
                  within  one  hundred  and  eighty  (180) days from the date of
                  destruction  or the  Building  must be or should be totally or
                  partially demolished,  whether to be reconstructed in whole or
                  in part or not,  then the  Landlord  may, at its option (to be
                  exercised  within  sixty  (60)  days from the date of total or
                  partial destruction) give notice to the Tenant that this Lease
                  is terminated  with effect from the date stated in the notice.
                  If the Tenant is able  effectively  to use the Premises  after
                  the  destruction,  such date of termination  shall be not less
                  than  thirty  (30)  days from the date of the  notice.  If the
                  Tenant is unable  effectively  to use the  Premises  after the
                  destruction, the date given in the notice shall be the date of
                  termination.   Upon  such   termination,   the  Tenant   shall
                  immediately  surrender  the  Premises  and  all  its  interest
                  therein to the Landlord and the Base Rent and Additional  Rent
                  shall abate and be apportioned to the date of termination  and
                  the Tenant  shall  remain  liable to the Landlord for all sums
                  accrued  due  pursuant  to the  terms  hereof  to the  date of
                  termination.  The Landlord's Architect shall determine whether
                  the Premises can or cannot be  effectively  used by the Tenant
                  and his  certificate  thereon shall be binding and  conclusive
                  upon both Landlord and Tenant for the purposes hereof.

         (ii)     In none of the cases aforesaid shall the Tenant have any claim
                  upon the Landlord for any damages sustained by it. No damages,
                  compensation  or  claim  whatsoever  shall be  payable  by the
                  Landlord for  inconvenience,  loss of business or annoyance or
                  other loss or damage whatsoever arising from the occurrence of
                  any such  damage  or  destruction  of the  Premises  or of the
                  Building and/or the repair or restoration thereof.


                                        9
                     LICENSES, ASSIGNMENTS AND SUBLETTINGS

The Landlord and Tenant further covenant and agree as follows:

9.1      Licenses
         --------
The Tenant  shall not suffer or permit  any part of the  Premises  to be used or
occupied by any persons other than the Tenant, its affiliates,  any assignees or
subtenants  permitted  under Article 9.2 and the employees of the Tenant and any
such  permitted  assignee  or  subtenant,  or suffer  or permit  any part of the
Premises to be used or occupied by any licensee or concessionaire,  or suffer or
permit  any  persons  to be  upon  the  Premises  other  than  the  Tenant,  its
affiliates,   such  permitted  assignees  or  subtenants  and  their  respective
employees, customers and others having lawful business with them.
<PAGE>

9.2      Assignments and Sublettings
         ---------------------------

(a)      The Tenant shall not assign or mortgage  this Lease or sublet the whole
         or any part of the Premises  unless it shall have first  requested  and
         obtained  the consent in writing of the Landlord  thereto.  Any request
         for such consent shall be in writing and shall be accompanied by a true
         copy of any offer to take an  assignment  or sublease  which the Tenant
         may  have  received  as well as a copy of the  proposed  assignment  or
         sublease or mortgage and the Tenant  shall  furnish to the Landlord all
         information  available to the Tenant or requested by the Landlord as to
         the business and financial  responsibility and standing of the proposed
         assignee or subtenant.

(b)      If the Landlord consents to the Tenant's request for consent to assign,
         mortgage or sublet, which consent may not be unreasonably  withheld, or
         if a consent to assign,  mortgage  or sublet is  obtained by order of a
         Court of competent  jurisdiction,  the Tenant shall assign, mortgage or
         sublet,  as the  case may be,  only  upon the  terms  submitted  to the
         Landlord  as  aforesaid  and  not  otherwise,  PROVIDED  THAT  no  such
         assignment, mortgaging or subletting shall:

         (i)      in any manner or extent release or relieve the Tenant from the
                  performance   or  observance  of  any  of  its  covenants   or
                  obligations hereunder; 

         (ii)     in the case of an assignment or subletting, be made other than
                  to  responsible   persons,   firms,   partnerships  or  bodies
                  corporate  who  undertake  by  agreement  in writing  with the
                  Landlord to perform and observe the  obligations of the Tenant
                  hereunder;

         (iii)     be  made unless  the Tenant is not in default of  any of  its
                   obligations under this Lease;

         (iv)     in the case of an  assignment  or  subletting,  be made to any
                  person, firm,  partnership or body corporate who intends to or
                  does  use  the  Premises  for any  business  or use  which  is
                  prohibited  hereunder  or which the  Landlord  is  obliged  to
                  restrict by reason of any other lease or contract  relating to
                  the Building,  or any use, purpose or business (other than the
                  Permitted Use) to which the Landlord in its entire  discretion
                  may object; and

PROVIDED THAT no such mortgage shall:

         i)       be made unless the mortgagee  covenants to pay to the Landlord
                  all  sums  payable  by the  Tenant  hereunder  (including  all
                  arrears)   during  any  period  the   mortgagee   actually  or
                  constructively  occupies the Premises and to otherwise perform
                  and observe the obligations of the Tenant hereunder during any
                  such period; and

         ii)      unless the mortgagee covenants that any assignment or sublease
                  it may wish to make  shall be  subject  to all the same  terms
                  affecting an assignment or subletting made by the Tenant.

(c)      The  Landlord's  consent to any  assignment or sublease shall not be or
         operate as a consent to any further  assignment  or  sublease;  and the
         Landlord's  prior  consent in writing  shall be  required  for each and
         every assignment or sublease.

(d)      Notwithstanding  any  prior  provisions  of  this  Article  9.2  to the
         contrary,  after  the  Landlord  receives  request  for  consent  to an
         assignment or subletting and the required  information  related thereto
         in writing, it shall have the option, to be exercised by written notice
         within  thirty  (30)  days  after  the  receipt  of  such  request  and
         information,  to  terminate  this Lease and the term hereof on not less
         than  thirty (30) days and not more than ninety (90) days notice to the
         Tenant.  If the Tenant elects, to be exercised by written notice to the
         Landlord within fifteen (15) days after receipt by the Landlord of such
         notice of  termination,  to  withdraw  the  request  for consent to the
         proposed  assignment or subletting,  in which case the Tenant shall not
         proceed with such  assignment or subletting,  the notice or termination
         shall be null and void and this Lease shall  continue in full force and
         effect in accordance with its terms.
<PAGE>
(e)      If the Tenant is a corporation,  other than a corporation the shares of
         which are listed on any recognized stock exchange, effective control of
         the corporation  shall not be changed directly or indirectly by a sale,
         encumbrance  or other  disposition  of  shares or  otherwise  howsoever
         without the Tenant first obtaining the written consent of the Landlord;
         provided that the Landlord's consent shall not be required for any sale
         or other  disposition of shares by present  shareholders to and between
         themselves or in the event of any transmission of shares on death or by
         operation of law and provided further that the Landlord's consent shall
         not be unreasonably  withheld where control of the Tenant is to pass to
         a subsidiary or parent of the Tenant.

(f)      Whether or not the  Landlord  consents to any request of the Tenant for
         an assignment, subletting or mortgage, the reasonable costs incurred by
         the Landlord in considering  and processing the request for consent and
         in completing any of the  documentation  involved in implementing  such
         assignment,  subletting or mortgage  shall be for the Tenant's  account
         and payable forthwith on demand by the Tenant to the Landlord.

(g)      The Landlord may sell, transfer, lease, mortgage, encumber or otherwise
         deal with the  Property or any portion  thereof or any  interest of the
         Landlord therein,  in every case without the consent of the Tenant, and
         without restriction,  and to the extent that any purchaser,  transferee
         or lessee  from the  Landlord  has become  bound by and  covenanted  to
         perform the covenants and obligations of the Landlord under this Lease,
         the  Landlord  shall  without  further  written  agreement be freed and
         relieved of liability upon such covenants and obligations.


                                       10
                           FIXTURES AND IMPROVEMENTS

The Landlord and Tenant further covenant and agree as follows:

10.1     Installation of Fixtures & Improvements
         ---------------------------------------

(a)      Following the initial tenant  improvements  as set out in the Agreement
         to Lease (the "Initial Tenant Improvements"), the Tenant will not make,
         erect, install or alter any Leasehold Improvements or trade fixtures in
         the Premises without having requested and obtained the Landlord's prior
         written approval, which the Landlord shall not unreasonably withhold.

(b)      In making, erecting,  installing or altering any Leasehold Improvements
         or trade  fixtures after the Initial  Tenant  Improvements,  the Tenant
         will not alter or interfere with any installations which have been made
         by the Landlord without the prior written approval of the Landlord, and
         in no event  shall  alter or  interfere  with or affect the  structural
         elements or the strength or outside appearance of the Building,  or the
         mechanical,  electrical, plumbing and climate control systems if any or
         the window coverings installed on exterior windows.

(c)      The Tenant's request for any approval hereunder shall be in writing and
         accompanied by an adequate  description of the  contemplated  work and,
         where appropriate,  working drawings and specifications  therefor.  Any
         out-of-pocket  expense  incurred by the Landlord in connection with any
         such  request  for  approval  shall  be  deemed  incurred  by way of an
         Additional  Service.  All work to be performed in the Premises shall be
         performed  by  competent  contractors  and  subcontractors  of whom the
         Landlord  shall have  approved  (such  approval not to be  unreasonably
         withheld,   but  provided  that  the  Landlord  may  require  that  the
         Landlord's contractors and subcontractors be engaged for any mechanical
         or electrical work). At the option of the Landlord, all such work shall
         be subject  to  inspection  by and the  reasonable  supervision  of the
         Landlord,   as  an  Additional  Service,  and  shall  be  performed  in
         accordance with any reasonable conditions or regulations imposed by the
         Landlord   (including   without   limitation  the  examination  by  the
         Landlord's  Architect  or other  experts of the  detailed  drawings and
         specification  as an  Additional  Service  and  contractor's  liability
         insurance in reasonable  amounts) and  completed in a good  workmanlike
         manner in accordance  with the  description of the work approved by the
         Landlord.
<PAGE>

10.2     Liens and Encumbrances on Fixtures & Improvements
         -------------------------------------------------

In connection with the making, erection, installation or alteration of Leasehold
Improvements and trade fixtures and all other work or  installations  made by or
for the Tenant in the Premises,  the Tenant shall comply with all the provisions
of the  applicable  provincial  legislation  in  respect of  builders'  lien and
worker's  compensation  and other statutes from time to time applicable  thereto
(including any provision  requiring or enabling the retention of portions of any
sums  payable  by way of  holdbacks)  and except as to any such  holdback  shall
promptly pay all accounts  relating  thereto.  If and whenever any  builders' or
other lien for work, labour, services or materials supplied to or for the Tenant
or for the cost of which the Tenant may be in any way liable or claims  therefor
shall arise or be filed or any such mortgage,  conditional sale agreement, lease
or other encumbrance  shall attach,  the Tenant shall within four (4) days after
receipt  of  notice  thereof  procure  the  discharge  thereof,   including  any
certificate  of lis  pendens  registered  in respect of any lien,  by payment or
giving  security or in such other manner as may be required or permitted by law,
and failing which the Landlord may in addition to all other  remedies  hereunder
avail itself of its remedy under Article 13.1 and may make any payments required
to  procure  the  discharge  of any such  liens or  encumbrances,  and  shall be
reimbursed  by the  Tenant  as  provided  in  Article  13.1,  and its  right  to
reimbursement  shall not be affected  or  impaired  if the Tenant  shall then or
subsequently  establish or claim that any lien or  encumbrance so discharged was
without merit or excessive or subject to any abatement, set-off or defence.

10.3     Tenant's Goods
         --------------

The  Tenant  covenants  that it will not sell,  dispose  of or remove any of the
trade  fixtures,  goods or chattels  of the Tenant  from or out of the  Premises
during  the Term  without  the  consent  of the  Landlord,  unless the Tenant is
substituting  new trade  fixtures,  goods or  chattels of equal value or is bona
fide  disposing of  individual  items which have become  excess for the Tenant's
purposes in the normal course of its business. The Tenant further covenants that
it will at all times have and retain full legal and beneficial  ownership of its
trade  fixtures,  goods and  chattels  and will not permit  them to be or become
subject to any lien, mortgage, charge, encumbrance or title retention agreements
except such as are bona fide  incurred for the purpose of financing the purchase
of such trade fixtures, goods or chattels.

10.4     Removal of Fixtures and Improvements
         ------------------------------------

All Leasehold  Improvements in or upon the Premises  installed or affixed by the
Tenant  shall  immediately  upon  termination  of this  Lease be and  become the
Landlord's property without compensation  therefor to the Tenant.  Except to the
extent  herein or  otherwise  expressly  agreed by the  Landlord in writing,  no
Leasehold Improvements,  trade fixtures, furniture or equipment shall be removed
by the Tenant from the Premises  either  during or at the  expiration  or sooner
termination  of the  Term,  except  that  (a)  the  Tenant,  if  not in  default
hereunder,  may at the end of the Term remove its trade fixtures,  furniture and
equipment;  and (b) the Tenant  shall at the end of the Term  remove such of its
trade fixtures, furniture,  equipment and Leasehold Improvements installed by it
as the Landlord  shall require to be removed.  The Tenant shall,  in the case of
every  removal  either  during or at the end of the Term,  make good any  damage
caused to the  Premises  and/or the  Building by the  installation  and removal.
Included in the  definition of trade fixtures shall be hepa filters which may be
removed by the Tenant at the end of the Term provided that the Tenant makes good
any damages caused to the Premises and/or the Building.
<PAGE>

                                       11
                       INSURANCE, LIABILITY AND INDEMNITY

11.1     Landlord's Insurance
         --------------------

The Landlord shall  throughout the Term provide and keep in force or cause to be
provided and kept in force:

(a)      fire insurance (including standard extended coverage endorsement perils
         and  leakage  from  fire  protective   devices)  or   alternatively  at
         Landlord's  option,  all risk  insurance in respect of the Building and
         its fixed  improvements  including all rentable premises  including the
         Premises but excluding tenant's fixtures and (except to the extent that
         the Landlord elects to insure them) Leasehold Improvements installed or
         constructed by tenants  including the Tenant and in sufficient  amounts
         to repair  and  restore  the  Building  and the  Premises  if  required
         pursuant to Article 8.3 hereof;

(b)      at the Landlord's option,  loss of rental income insurance  relating to
         rental abatement contemplated in Article 8.3;

(c)      if any boilers or pressure  vessels are operated in the Building  other
         than in any  rentable  premises  therein,  boiler and  pressure  vessel
         insurance with respect thereto;

(d)      comprehensive  general  business  liability  insurance  with respect to
         the operation of the  Building for personal  and bodily injury or death
         and damage to property of others; and

(e)      insurance against  any other  occurrences  and in such  amounts  as the
         Landlord may deem prudent.

Insurance effected by the Landlord under this clause shall be with insurers duly
licensed to transact insurance in British Columbia and shall be in amounts which
the  Landlord  shall  from  time to  time  determine  as  being  reasonable  and
sufficient,  shall be subject to such  reasonable  deductibles and exclusions as
the Landlord may determine and shall otherwise be upon such terms and conditions
as the  Landlord  shall  from time to time  determine  as being  reasonable  and
sufficient.

11.2     Tenant's Insurance
         ------------------

The Tenant  shall,  at its own cost,  throughout  the Term  provide  and keep in
force:

(a)      fire  insurance   (including  standard  extended  coverage  endorsement
         perils,   leakage  from  fire  protective   devices  and  water  damage
         generally) in respect of the Tenant's fixtures,  furniture,  equipment,
         inventory and  stock-in-trade,  the Tenant's Leasehold  Improvements to
         the extent that the Landlord has not elected to insure them pursuant to
         Article  11.1,  and  such  other  property  in or  forming  part of the
         Premises  (not being  property  which the  Landlord  is bound to insure
         pursuant  to  Article  11.1)  as the  Landlord  may  from  time to time
         require;

(b)       plate and other glass insurance;

(c)      if any  boiler or pressure vessel  is operated in the  Premises, boiler
         and pressure vessel insurance with respect thereto;

(d)      comprehensive  general business liability insurance with respect to the
         business  carried on in or from the Premises and the use and  occupancy
         thereof for personal and bodily  injury or death and damage to property
         of others; and

(e)      Tenant's  legal  liability  insurance and such other forms of insurance
         including   business   interruption   insurance  as  the  Landlord  may
         reasonably require.
<PAGE>

Insurance  effected by the Tenant under this clause shall be with  insurers duly
licensed to transact  insurance in British  Columbia,  shall be in amounts which
the  Landlord  shall  from  time to  time  determine  as  being  reasonable  and
sufficient (and,  without limiting the generality of the foregoing,  in the case
of insurance under  paragraphs  (a), (b) and (c) shall be on a full  replacement
cost basis subject only to such  deductibles  and exclusions as the Landlord may
approve and in the case of insurance  under  paragraph  (d) shall have  original
limits not less than  $2,000,000 in respect of any one accident or  occurrence),
shall  permit the release of the Landlord  from certain  liability as set out in
Article 11.3,  shall include the Landlord as an additional  named  insured,  and
shall  otherwise be upon such terms and  conditions  as the Landlord  shall from
time to time require as being  reasonable and sufficient.  At the request of the
Landlord the Tenant shall file with the Landlord such copies of current policies
or  certificates  or other proofs as may be required to  establish  the Tenant's
insurance  coverage  in effect  from time to time and the  payment  of  premiums
thereon,  and  if  the  Tenant  fails  to  insure  or pay  premiums  or to  file
satisfactory  proof thereof as so required,  the Landlord may without  notice to
the Tenant effect such insurance and recover any premiums paid therefor from the
Tenant on demand. All such policies of insurance shall contain an undertaking by
the insurance  company to notify the Landlord in writing  thirty (30) days prior
to any  material  change in any such  policies.  To the extent  applicable,  the
Tenant  agrees to use the  proceeds of  insurance to restore the Premises to the
condition existing immediately prior to any loss or damage.

11.3     Limitation of Landlord's Liability
         ----------------------------------

The  Landlord  shall not be liable or in any way  responsible  to the  Tenant in
respect of any loss,  injury or damage  suffered by the Tenant or its employees,
invitees or licensees,  or others unless  resulting  from the  negligence of the
Landlord  but in no event  shall  the  Landlord  be liable  for loss,  injury or
damage:

(a)       to any  property of the  Tenant or  others from  theft, damage  or any
          other cause;

(b)      caused to any persons or property by fire, explosion,  falling plaster,
         escaping steam or gas, electricity,  water, rain or snow, or leaks from
         any part of the Building or from any pipes, appliances or plumbing work
         therein, or by dampness;

(c)      caused by other  tenants  or  occupants  or persons or the public in or
         about the  Premises  or other  rentable  premises or  elsewhere  in the
         Building,  or caused by  operations  in the  conduct of any  private or
         public work;

(d)      of the nature of indirect or  consequential  loss,  injury or damage of
         any nature whatsoever  including without limitation matters affected by
         interruptions  in  the  supply  of  water,  electricity,  heating,  air
         conditioning and other utilities; or

(e)      required to  be insured by the Tenant  under the provisions  of Article
         11.2.

11.4     Indemnity
         ---------

Notwithstanding  any other  provision  of this Lease to the  contrary the Tenant
shall be liable to the Landlord for and does hereby hold  harmless and indemnify
the  Landlord,  its  officers,  employees  and  agents  and the  successors  and
permitted  assigns  of  the  Landlord  from  and  against  all  losses,   costs,
liabilities,  claims,  damages,  expenses,  demands,  suits,  actions  or  other
proceedings,  judgements,  penalties and fines (including,  without limiting the
generality of the foregoing, direct losses, costs, damages and expenses suffered
by the  Landlord  which arise  during or after the Term of this Lease and are in
any manner based upon, arise out of or are connected with:

(a)      any breach, violation, or non-performance of any covenant, condition or
         agreement  in this  Lease set forth  and  contained  on the part of the
         Tenant to be fulfilled, kept, observed or performed;

(b)      any damage to property, including property of the Landlord,  occasioned
         by any negligence of the Tenant or its employees,  agents, contractors,
         invitees, concessionaires, or licensees in or about the Building;
<PAGE>

(c)      any injury to person or persons,  including death at any time resulting
         therefrom, occasioned by any negligence of the Tenant or its employees,
         agents,  contractors,  invitees,  concessionaires,  or  licensees in or
         about the Building;

(d)      any contract,  lien,  privilege,  charge or encumbrance of the Premises
         arising from or occasioned by the act, default,  omission or negligence
         of the Tenant and those for whom the Tenant is responsible;

(e)      the  presence  of any  waste,  as that  term is  defined  in the  Waste
         Management Act, S.B.C.  1979 c.41, as amended from time to time,  toxic
         or  hazardous  substances  in,  on or under the  Premises  or any other
         contamination  including  that resulting  from waste,  an  unhealthful,
         hazardous  or  dangerous   condition  caused  by,   contributed  to  or
         aggravated  by  the  Tenant's   violation  of  any  laws,   ordinances,
         regulations  or  requirements  pertaining  to solid  or  other  wastes,
         chemicals,  oil and gas, toxic, corrosive or hazardous materials,  air,
         water  (surface or ground  water) or noise  pollution  and the storage,
         handling,  use or disposal of such matter  (unless the waste,  toxic or
         hazardous  substances or any other contaminants are present solely as a
         result  of the  negligence  or  willful  misconduct of  the  Landlord),
         including,  without  limitation,  costs incurred in connection with any
         investigation of site conditions or any clean-up,  remedial, removal or
         restoration  work  required by any  federal,  provincial  or  municipal
         government agency;

such covenant of the Tenant to survive the  expiration or sooner  termination of
the Term,  notwithstanding  anything  herein to the contrary.  The Tenant hereby
further  expressly  agrees that any  statutory  limitation  period on actions to
enforce  these  obligations  shall not be deemed to commence  until the Landlord
discovers any such  circumstances as may give rise to their  enforcement and the
Tenant  hereby  knowingly  and  voluntarily  waives the  benefits of any shorter
limitation period.


                                       12
            SUBORDINATION, ATTORNMENT, REGISTRATION AND CERTIFICATES

The Tenant agrees with the Landlord that:

12.1     Subordination and Attornment
         ----------------------------

This Lease  shall,  at the option of the  Landlord  or the  mortgagee  under any
mortgage  or the  trustee  under  any  trust  deed or  trust  indenture,  now or
hereafter existing, (such mortgagee or trustee being in this Article 12.1 called
the "Holder" and such mortgage or trust deed or trust indenture being called the
"Security")  affecting the Lands or Building,  exercisable  at any time and from
time to time by the Landlord or such Holder,  be either subject and  subordinate
to such Security and accordingly not binding upon such Holder or, alternatively,
prior to such Security and binding upon such Holder.  On request at any time and
from time to time, the Tenant shall either postpone and  subordinate  this Lease
with the intent and effect that this Lease and all rights of the Tenant shall be
subject to the rights of such Holder as fully as if the Security,  regardless of
when made, had been made prior to the making of this Lease or, alternatively, to
attorn to such Holder and become  bound to it as its tenant of the  Premises for
the then  unexpired  residue  of the Term and  upon  the  terms  and  conditions
contained  in this  Lease,  in each  case as the  Landlord  or such  Holder  may
require,  without  limiting  the  foregoing  (and  notwithstanding  that  any of
previous  attornment or  subordination  in favour of such Holder shall have been
given)  the  Tenant  shall  execute  promptly  the  appropriate   instrument  of
postponement  and   subordination  or  alternatively  the  right  instrument  of
attornment, as the case may be, in order to give effect to the foregoing.
<PAGE>

12.2     Registration
         ------------

The Tenant may register this Lease, without financial provisions,  with the Land
Title Office.  All costs of  registration,  including  survey  drawing costs and
registration  costs,  shall be borne by the Tenant and the Landlord will provide
the Lease in registerable form if requested by the Tenant.

The  Landlord  hereby  agrees  that  the  registered  ownership  on title to the
Building and to the  adjacent  building  owned by the  Landlord  located at 8525
Baxter Place,  Burnaby, B.C. (the "8525 Building") shall both remain in the name
of the Landlord,  or that upon transfer of registered  ownership on title to the
8525 Building, that the new owner will assume the obligations of the Landlord to
the Tenant under this Lease with respect to the 8525 Building.

12.3     Certificates
         ------------

The Tenant  shall  within  ten (10) days of  receipt  of notice in writing  from
Landlord execute and deliver to the Landlord and if required by the Landlord, to
any  mortgagee  (including  any trustee  under a trust deed or trust  indenture)
designated  by the Landlord a  confirmation  in writing as to the status of this
Lease,  including  as to whether it is in full force and effect,  is modified or
unmodified,  confirming  the  rental  payable  hereunder  and the  state  of the
accounts  between the Landlord and Tenant,  the  existence or  non-existence  of
defaults, the Rentable Area of the Premises, and any other matters pertaining to
this Lease as to which the Landlord shall request confirmation. Such certificate
to be substantially in the form attached hereto as Schedule "D".

12.4     Non-Disturbance Agreement
         -------------------------

         The  Landlord  shall  obtain from any  existing  or future  holder of a
mortgage,  charge or  hypothec,  a  non-disturbance  agreement  in favour of the
Tenant  whereby the Tenant's  possession  of the Premises will not be interfered
with by any such  holder,  provided  that the  Tenant is not in  default  of its
obligations under this Lease.

                                       13
                    REMEDIES OF LANDLORD ON TENANT'S DEFAULT

The Landlord and Tenant further covenant and agree as follows:

13.1     Remedying by Landlord, Non-Payment and Interest
         -----------------------------------------------

In addition to all rights and  remedies of the  Landlord  available to it in the
event of any default  hereunder by the Tenant  either by any other  provision of
this Lease or by statute or common law, the Landlord:

(a)      shall have the right (but  shall not be  obligated  to) at all times to
         remedy or attempt to remedy any default of the Tenant,  and in so doing
         may make any  payments due that are verified to be due by the Tenant to
         third  parties (the payment of which is required by this Lease) and may
         enter upon the Premises to do work or other things therein, and in such
         event all expenses of the Landlord in remedying or attempting to remedy
         such default  shall be payable by the Tenant to the Landlord  forthwith
         upon demand,  together with a fee for  supervision for carrying out the
         Tenant's obligations in an amount equal to fifteen (15%) percent of the
         cost of repairs or other work  carried out by or under the  supervision
         of the Landlord which amount shall be in addition to the incurred costs
         of such work  together  with interest at a rate of six (6%) percent per
         annum  above the Prime Rate from time to time on the  aggregate  of the
         foregoing  from the date  funds were  expended  by the  Landlord  until
         actual payment thereof by the Tenant;

(b)      may  recover  as  Additional  Rent all sums paid or  expenses  incurred
         hereunder by the Landlord, which ought to have been paid or incurred by
         the  Tenant,  or for  which  the  Landlord  hereunder  is  entitled  to
         reimbursement  from the Tenant,  and any interest owing to the Landlord
         hereunder by any and all  remedies  available to it for the recovery of
         Base Rent in arrears;
<PAGE>

(c)      if the Tenant  shall fail to pay any Rent or other  amount from time to
         time payable by it to the Landlord  hereunder  promptly when due, shall
         be entitled to interest thereon at a rate of six (6%) percent per annum
         above the Prime Rate from time to time  from,  (except  where  interest
         commences to accrue  earlier  pursuant to Article  13.1 (a)),  the date
         upon which the same was due until actual payment thereof.

13.2     Remedies Cumulative
         -------------------

The  Landlord  may from  time to time  resort  to any or all of the  rights  and
remedies  available  to it in the event of any default  hereunder by the Tenant,
either by any  provision  of this Lease or by statute or the general law, all of
which rights and remedies are intended to be cumulative and not alternative, and
the express provisions hereunder as to certain rights and remedies are not to be
interpreted as excluding any other or additional  rights and remedies  available
to the Landlord by statute or the general law.

13.3     Right of Re-entry on Termination
         --------------------------------

If this Lease shall have become terminated  pursuant to any provision hereof, or
if the Landlord  shall have become  entitled to  terminate  this Lease and shall
have given notice  terminating it pursuant to any provision hereof,  then and in
every such case it shall be lawful for the Landlord thereafter to enter into and
upon the  Premises or any part  thereof in the name of the whole and the same to
have again, repossess and enjoy as of its former estate.

13.4     Re-entry and Termination
         ------------------------

If and whenever the Landlord  becomes  entitled to or does re-enter the Premises
under any provision of this Lease, the Landlord, in addition to all other rights
and remedies,  shall have the right to terminate this Lease forthwith by leaving
upon the Premises notice in writing of such  termination,  and in such event the
Tenant shall forthwith vacate and surrender the Premises.

13.5     Rights on Re-entry
         ------------------

Whenever the Landlord  becomes  entitled to re-enter upon the Premises under any
provision of this Lease,  the  Landlord,  in addition to all other rights it may
have, shall have the right to enter the Premises, as agent of the Tenant, either
by force or otherwise  without  being  liable for any loss or damage  occasioned
thereby and to relet them and to receive the rent  therefor  and as the agent of
the Tenant to take possession of any furniture or other property  thereon and to
sell the same at public or private sale without notice and to apply the proceeds
thereof and any rent derived from  reletting the Premises,  after  deducting its
costs of  conducting  such sale and its cost of  reletting,  upon account of the
Rent due and to become due under  this  Lease and the Tenant  shall be liable to
the Landlord for the deficiency, if any.

13.6     Distress
         --------

The Tenant  waives and renounces the benefit of any present or future law taking
away or limiting the Landlord's  right of distress on the property of the Tenant
and,  notwithstanding any such law, the Landlord may seize and sell the Tenant's
goods and chattels,  excepting for records and reports of a confidential nature,
whether within the Premises or removed  therefrom and apply the proceeds of such
sale upon  Rent and all  other  amounts  outstanding  including  the cost of the
seizure  and sale in the same manner as might have been done if such law had not
been passed.  The Tenant further  agrees that if it leaves the Premises  leaving
any Rent or other  amounts  provided  to be paid under this  Lease  unpaid,  the
Landlord,  in addition to any remedy otherwise provided at law or in equity, may
seize the goods and  chattels  of the Tenant at any place to which the Tenant or
any other  person may have  removed them from the Premises in the same manner as
if such goods and chattels had remained upon the  Premises.  For the purposes of
making any such  distress the Landlord,  by itself,  its agents and bailiffs may
break open any door or window and enter upon the Premises at any time after Rent
or other monies shall accrue due.
<PAGE>

13.7     Payment of Rent, Etc., on Termination
         -------------------------------------

If the Landlord  shall  re-enter and this Lease shall be  terminated as provided
for herein, then the Tenant shall pay to the Landlord on demand:

(a)      Rent up to the time of re-entry or termination,  whichever shall be the
         later, plus accelerated Rent as herein provided;

(b)       all other amounts payable hereunder until such time;

(c)      such  expenses as the Landlord may incur or have incurred in connection
         with  re-entering or terminating and reletting,  or collecting sums due
         or payable by the Tenant or  realizing  upon  assets  seized  including
         brokerage,  legal fees and disbursements (on a solicitor-client basis),
         and the expense of keeping the  Premises in good order,  repairing  the
         same and preparing them for reletting; and

(d)      as  liquidated  damages  for the loss of Rent and  other  income of the
         Landlord  expected to be derived from the Lease during the period which
         would have  constituted  the  unexpired  portion of the Term had it not
         been terminated,  the amount,  if any, by which the rental value of the
         Premises  for such period  established  by  reference  to the terms and
         provisions  of this Lease  exceeds the rental value of the Premises for
         such period  established by reference to the terms and provisions  upon
         which the Landlord  relets  them,  if such  reletting  is  accomplished
         within a reasonable time after termination of this Lease, and otherwise
         with reference to all market and other relevant  circumstances.  Rental
         value is to be computed in each case by reducing to present worth at an
         interest  rate equal to the then current  Prime Rate all Rent and other
         amounts to become  payable for such period and where the  ascertainment
         of  amounts  to become  payable  requires  it,  the  Landlord  may make
         estimates and assumptions of fact which shall govern unless shown to be
         unreasonable or erroneous.


                                       14
             CANCELLATION OF INSURANCE AND EVENTS TERMINATING LEASE

The Landlord and Tenant further covenant and agree as follows:

14.1     Cancellation of Insurance
         -------------------------

If any policy of insurance  upon the Building  from time to time effected by the
Landlord  shall be  cancelled  or be about to be  cancelled by the insurer or an
insurer shall refuse or decline to place or renew insurance by reason of the use
or  occupation  of the  Premises  by the Tenant or any  assignee,  subtenant  or
licensee of the Tenant or anyone permitted by the Tenant to be upon the Premises
and the Tenant after  receipt of notice in writing from the Landlord  shall have
failed to take such  immediate  steps in  respect of such use or  occupation  as
shall enable the Landlord to reinstate,  renew, replace or avoid cancellation of
(as the case may be) , such policy of insurance, without limitation to any other
right or remedy of the  Landlord  under  this  Lease,  the  Landlord  may at its
option,  at any time and without  notice  enter upon the Premises and remove the
said use or condition in which event the Tenant shall forthwith on demand pay to
the Landlord the cost to the Landlord  related to such removal  together  with a
supervisory  fee of fifteen  (15%) percent of such cost and with interest on the
aggregate  of the  foregoing  from the date funds were  expended by the Landlord
until actual payment thereof.
<PAGE>

14.2     Default
         -------

If and whenever:

(a)      the Rent hereby reserved, or any part thereof, be not paid when due, or
         there is  non-payment of any other sum which the Tenant is obligated to
         pay under any provisions  hereof, and in either case such default shall
         continue for ten (10) days after notice by the Landlord  requiring  the
         Tenant to rectify the same; or

(b)      the Term or any goods,  chattels,  equipment or other personal property
         of the Tenant shall at any time be taken or be exigible in execution or
         attachment,  or the Tenant shall attempt or threaten to move its goods,
         chattels or equipment  out of the Premises  (other than in the ordinary
         course of its  business  or as  permitted  hereunder)  or shall,  for a
         period of ten (10)  consecutive days (without the prior written consent
         of the Landlord) fail to conduct business from the Premises; or

(c)      the  Premises  shall be  vacated or abandoned or remain unoccupied  for
         fifteen (15) days or more while capable of being occupied; or

(d)      the Tenant shall become  insolvent  or commit an act of  bankruptcy  or
         become bankrupt or take the benefit of any Act that may be in force for
         bankrupt  or  insolvent  debtors  or, if the  Tenant is a  corporation,
         become involved in a winding up proceeding or other  proceeding for the
         termination  of its  corporate  existence  or if a  receiver  shall  be
         appointed for the business, property, affairs or revenues of the Tenant
         or if any governmental authority should take possession of the business
         or property of the Tenant or the Tenant shall make a general assignment
         for the benefit of creditors; or

(e)      without the written consent of the Landlord, the Premises shall be used
         by any  persons  other  than the  Tenant or its  permitted  assigns  or
         sub-tenants  or for any  purpose  other  than that for which  they were
         leased,  or  shall  be  occupied  by  any  person  whose  occupancy  is
         prohibited by this Lease; or

(f)      the  Tenant  shall  assign or sublet or purport to assign or sublet any
         portion or all of the Term or the Premises  without the written consent
         of the Landlord or control of the Tenant, if a corporation,  is changed
         without the prior written  consent of the  Landlord,  in either case as
         required pursuant to Article 9; or

(g)      the  Tenant  shall  fail  to  remedy  any  condition   giving  rise  to
         cancellation,   threatened   cancellation,   reduction  or   threatened
         reduction of any  insurance  policy on the Property or any part thereof
         within twenty four (24) hours after notice thereof by the Landlord; or

(h)      the Tenant  shall breach or fail to observe or perform any other of the
         covenants, agreements,  provisions,  stipulations and conditions herein
         to be observed,  performed  and kept by the Tenant and shall persist in
         such failure for ten (10) days after  notice by the Landlord  requiring
         that the Tenant  remedy,  correct,  desist or comply (or in the case of
         any such breach which  reasonably would require more than ten (10) days
         to rectify,  unless the Tenant shall commence  rectification within the
         said ten (10) day period and  thereafter  promptly and  diligently  and
         continuously proceed with the rectification of the breach); then and in
         any of such cases,  at the option of the  Landlord,  the full amount of
         the current  month's and the next three (3) months'  monthly Rent shall
         immediately  become due and payable and the Landlord may without notice
         or  any  form  of  legal  process  forthwith  re-enter  upon  and  take
         possession of the Premises or any part thereof in the name of the whole
         and  remove  and  sell  the  Tenant's  goods,  chattels  and  equipment
         therefrom  any rule of law or equity to the  contrary  notwithstanding;
         and the Landlord may seize and sell such goods,  chattels and equipment
         of the  Tenant  as are in the  Premises  or at any  place to which  the
         Tenant or any other  person may have removed them in the same manner as
         if they had remained and been  distrained  upon the Premises;  and such
         sale may be effected in the discretion of the Landlord either by public
         auction or by private treaty, and either in bulk or by individual item,
         or partly by one means and partly by  another,  all as the  Landlord in
         its entire discretion may decide.
<PAGE>

                                       15
                                 MISCELLANEOUS

The Landlord and Tenant further covenant and agree as follows:

15.1     Notices
         -------

All  notices,  demands,  requests,  consents,  approvals  and other  instruments
required or permitted  to be given  pursuant to the terms of this Lease shall be
in writing and shall be deemed to have been properly given if personally  served
or sent by registered  mail (postage  prepaid with return receipt  requested) or
sent by telecopier  to the Landlord or the Tenant at the addresses  hereinbefore
set forth or in the case of the Tenant at the  Premises  in lieu of the  address
hereinbefore set forth.

Provided,  however, that such address may be changed upon five (5) business days
written notice thereof, similarly given, to the other party.

The date of receipt of any such notice, demand,  request,  consent,  approval or
other instrument shall be deemed to be as follows:

(a)       in the case of personal service, the date of service;

(b)      in the case of registered  mail, the fifth (5th) business day following
         the date of delivery to the Post Office, provided, however, that in the
         event of an interruption of normal mail service receipt shall be deemed
         to be the fifth (5th)  business day  following the date on which normal
         mail service is restored;

(c)      in the case of  telecopy,  the business  day next following  the day o
         sending.
  
Any notices  required or permitted  to be given by the Landlord  pursuant to the
terms of this Lease may be served by the  Landlord,  its lawyer or its  managing
agent.

15.2     Entire Agreement
         ----------------

The  Tenant   acknowledges   that  there  are  no  covenants,   representations,
warranties, agreements or conditions expressed or implied relating to this Lease
or the  Premises  save as expressly  set out in this Lease and the  Agreement to
Lease  accepted on June 20, 1995  between the  Landlord  and the Tenant.  In the
event of any  conflict  between  the  terms of this  Lease  and the terms of the
Agreement to Lease the terms of this Lease shall prevail.  This Lease may not be
modified  except by an  agreement  in writing  executed by the  Landlord and the
Tenant.

15.3     Area Determination
         ------------------

In the event  that any  calculation  or  determination  by the  Landlord  of the
Rentable  Area of any  premises  (including  the  Premises)  of the  Building is
disputed or called into  question,  it shall be  calculated or determined by the
Landlord's Architect,  whose certification shall be conclusive, the cost of such
remeasurement  to be paid by and borne by the party so disputing or calling into
question the previous calculation or determination. The Landlord may at any time
convert all measurements  relating to this Lease to metric  measurements and the
Lease shall be appropriately modified.
<PAGE>

15.4     Successors and Assigns, Interpretation
         --------------------------------------

This Lease and everything  herein contained shall enure to the benefit of and be
binding  upon  the  successors  and  assigns  of the  Landlord  and  the  heirs,
executors,  administrators,  successors  and  permitted  assigns of the  Tenant.
References  to the  Tenant  shall be read with such  changes in gender as may be
appropriate,  depending  on whether  the Tenant is a male or female  person or a
firm or  corporation,  and if the Tenant is more than one person or entity,  the
covenants of the Tenant shall be deemed-joint and several.

15.5     Force Majeure
         -------------

Notwithstanding  anything herein  contained to the contrary,  if the Landlord or
the Tenant is, in good faith,  delayed or prevented from doing anything required
by this Lease or the  Agreement to Lease  because of a strike,  labour  trouble,
inclement  weather,  inability  to get  materials or  services,  power  failure,
restrictive governmental laws, or regulations,  riots,  insurrection,  sabotage,
rebellion, war, act of God, or any other similar reason that is not the fault of
the party delayed, including any delay caused as a result of responsiveness,  or
lack  thereof  on  behalf  of the  other  party,  its  consultants,  agents  and
representatives,  the doing of the thing is excused for a period of time that is
appropriate  given the nature,  circumstances,  and length of the delay, and the
party  delayed  shall do what was delayed or  prevented  within the  appropriate
period after the delay.

15.6     Waiver
         ------

Failure  of  the  Landlord  to  insist  upon  strict  performance  of any of the
covenants or  conditions of this Lease or to exercise any right or option herein
contained  shall  not be  construed  as a waiver or  relinquishment  of any such
covenant,  condition,  right or option,  but the same shall remain in full force
and effect.  The Tenant  undertakes  and  agrees,  for itself and for any person
claiming to be a subtenant or assignee,  that the  acceptance by the Landlord of
any rent from any  person  other  than the Tenant  shall not be  construed  as a
recognition of any rights not herein expressly granted, or as a waiver of any of
the Landlord's  rights,  or as an admission that such person is, or as a consent
that such person  shall be deemed to be, a subtenant  or assignee of this Lease,
irrespective of whether the Landlord or said person claims that such person is a
subtenant  or  assignee  of this Lease.  The  Landlord  may accept rent from any
person  occupying  the Premises at any time without in any way waiving any right
under this Lease.

15.7     Governing Law, Covenants, Severability
         --------------------------------------

This Lease shall be governed by and construed in accordance with the laws of the
Province of British Columbia in which the Building is situate.  The Landlord and
the Tenant agree that all of the provisions of this Lease are to be construed as
covenants  and  agreements  as though the words  importing  such  covenants  and
agreements were used in each separate  section  hereof.  Should any provision or
provisions  of this  Lease be illegal  or not  enforceable,  it or they shall be
considered  separate and severable  from the Lease and its remaining  provisions
shall remain in force and be binding upon the parties  hereto as though the said
provision or provisions had never been included.
<PAGE>

15.8     Headings, Captions
         ------------------

The  headings  and  captions  appearing  in this  Lease have been  inserted  for
convenience of reference  only and in no way define,  limit or enlarge the scope
or meaning of this Lease or of any provisions hereof.

15.9     Time for Payment
         ----------------

Unless otherwise expressly provided in this Lease, all amounts (other than Rent)
required to be paid by the Tenant to the  Landlord  pursuant to this Lease shall
be payable on demand at the place designated by the Landlord for payment of Rent
and if not so paid  within  ten (10) days of such  demand be  treated as Rent in
arrears.

15.10    Time of Essence
         ---------------

Time shall be of the essence of this Lease.

15.11    Special Provisions
         ------------------

Option to Renew - The Landlord will grant to the Tenant two options to renew for
- ---------------
a further 5 years each provided that the Tenant is not then in default of any of
its  financial  covenants  herein  contained  on the  part of the  Tenant  to be
performed.  Such options to renew may be exercised by the written request of the
Tenant  delivered or mailed to the Landlord not earlier than nine (9) months and
not later than six (6) months before the  expiration of the Term or renewal term
as the case may be. All terms and conditions as in this Lease shall be the same,
except for any improvements  work, this renewal option,  and the Basic Rent. The
Landlord and the Tenant shall make all reasonable  efforts to reach agreement as
to the annual rent for such five (5) year periods not more than three (3) months
prior to the  commencement  of such five (5) year  periods and not less than two
(2) months prior to the  commencement  of such five (5) year periods and failing
such  agreement  such  annual rent shall be fixed  under the  provisions  of the
Commercial  Arbitration Act, Statutes of British Columbia, and shall be the fair
market rent for the Premises, having regard to the rent then currently being for
premises  of a like  kind,  of a  like  age  and  condition,  and in  comparable
locations in the Municipality of Burnaby. Such annual rent shall in any event be
not less than the Base Rent fixed in respect  of the  previous  period for which
Base Rent has been fixed under this Lease.


Options to Lease Contiguous Space - The Landlord hereby grants to the Tenant the
following options to lease space in the Building  contiguous to the Premises (or
contiguous to any space in the Building leased by the Tenant in the future):

                  Optioned Area     Exercise Date    Occupancy Date
                  -------------------------------------------------
   
         1)       15,000^13,750 sq. ft.            October^November 1, 1996
         2)       15,000 sq. ft.    March 1, 1997    December 31, 1997
         3)       15,000 sq. ft.    March 1, 1999    December 31, 1999
         4)       20,000 sq. ft.    March 1, 2001    December 31, 2001
    


Option No.'s 2, 3 and 4 outlined  above may be exercised by the written  request
of the Tenant  delivered  or mailed to the  Landlord  on or before the  Exercise
Dates as set out in this section above.

   
The parties  acknowledge  that the Tenant  exercised Option No. 1 above prior to
the signing of this Lease.  In connection  with the Tenant's  exercise of Option
No. 1 above,  the  Landlord  shall  pay to the  Tenant a  leasehold  improvement
allowance of $25.00 per sq. ft. of the optioned  area as set out in this section
above. With respect to Option No. 1, the Tenant will have access to the optioned
premises,  for a period of sixty (60) days prior to the Tenant taking possession
and  beginning  to pay Base Rent and  Additional  Rent on the  November  1, 1996
occupancy date, for the purpose of installing  fixtures and furnishings.  During
such period prior to the occupancy  date,  the Tenant will not be liable for any
Base Rent or  Additional  Rent,  except that subject to the Landlord  paying the
leasehold  improvement allowance the Tenant will be responsible for all costs to
complete the tenant  improvements,  including  without  limitation  provision of
services such as power,  heat,  water,  24-hour security,  sanitary  facilities,
garbage disposal  containers,  the use of a designated  elevator and supervision
and  co-ordination  by the Landlord and/or its consultants  during  execution of
work ("Tenant Improvement Costs").
<PAGE>

If the Tenant  exercises Option No.'s 2, 3 or 4 above, the Tenant shall take the
optioned  premises on an "as is" basis,  provided that the  respective  optioned
premises are in a condition or level  reasonably  consistent with the quality of
finishing in the  Premises.  If the  respective  optioned  premises are not in a
condition or level  reasonably  consistent  with the quality of finishing in the
Premises,  and the Landlord has not improved the respective optioned premises to
such a condition or level by the respective  occupancy  date,  then the Landlord
shall pay to the Tenant an amount (the  "Improvement  Amount") equal to the cost
to improve the  respective  optioned  premises to the level of the then  current
value of the improvements to the Premises  (excluding lab and technical  areas),
normal  wear and tear  excepted,  such cost to  improve  per  square  foot to be
multiplied  by a fraction,  the  numerator of which is the  remaining  number of
months in the Term and the denominator of which is 120.

If the Tenant  exercises  Options No.'s 2, 3 or 4 above, the Landlord shall also
recarpet and paint the respective  optioned  premises prior to the Tenant taking
possession.  With  respect  to Options  No.'s 2, 3 and 4, the  Tenant  will have
access to the optioned  premises,  for a period of thirty (30) days prior to the
Tenant taking  possession and beginning to pay Base Rent and Additional  Rent on
the  respective  occupancy  date,  for the purpose of  installing  fixtures  and
furnishings. During such period prior to the occupancy date, the Tenant will not
be liable  for any Base Rent or  Additional  Rent,  except  that  subject to the
Landlord  paying the  Improvement  Amount the Tenant will be responsible for all
Tenant Improvement Costs.

The Landlord and the Tenant will make all reasonable effort to ensure that their
respective consultants and contractors cooperate with each other during any time
of mutual occupation of the optioned premises.
    

The basic  rent,  additional  rent and all terms and  conditions  of a new lease
relating to the respective optioned premises shall be consistent with this Lease
and the term of the lease on the  respective  optioned  premises shall expire on
the same date as the Term in this Lease.


(c)      Right to First Refusal to Lease - If the Landlord  receives a bona fide
third party offer (the  "Offer") to lease space in the  Building,  it shall only
accept  such Offer  subject to this Right of First  Refusal  and if the rent and
terms of the Offer are not more favourable to the third party than those offered
to the Tenant in the Right of First  Opportunity  as set out in paragraph (d) of
this section below.

If the Landlord  receives an Offer, it shall deliver a true copy of the Offer to
the  Tenant.  If the  Tenant  is not  then in  default  of any of its  financial
covenants herein contained on the part of the Tenant to be performed, and if the
Tenant has not declined,  in the  preceding 120 day period,  to lease such space
under its Right of First  Opportunity set out in paragraph (d) hereof,  then the
Landlord  shall  grant to the  Tenant a right of  first  refusal  to lease  (the
"RFR"),  during the Term or any renewal thereof, the space set out in the Offer,
on the terms and  conditions  of the Offer.  The Tenant  shall have fifteen (15)
days from such  delivery  within  which to give  written  notice to the Landlord
whether it intends to exercise  its RFR.  The RFR may only be  exercised  within
such time,  by the Tenant  delivering  notice in  writing of  acceptance  to the
Landlord  whereupon  a binding  agreement  to lease such  premises  shall  exist
between the  Landlord  and Tenant on the terms and  conditions  contained in the
Offer.  If the Tenant  elects not to so exercise the RFR,  then the premises may
thereafter  be leased by the Landlord to the tenant  identified in the Offer and
subject to the terms and  conditions  therein,  but not  otherwise,  and failing
leasing as aforesaid, the provisions of this section shall apply again.

The Tenant  shall not have the right to assign  this  right of first  refusal to
lease except in conjunction with a permitted assignment of all rights under this
Lease.
<PAGE>

(d)      Right of First Opportunity to Lease Space - If  the Tenant is  not then
in default of any of its financial covenants herein contained on the part of the
Tenant to be performed,  then the Landlord  shall grant to the Tenant a Right of
First Opportunity to lease any space in the Building as it becomes available for
lease.  The  Landlord  agrees to deliver to the  Tenant  notice in writing  (the
"Landlord's  Notice")  identifying  the available space and the date on which it
will be  available.  The  Tenant  shall have  thirty  (30) days from the date of
delivery of the Landlord's Notice to provide written notice to the Landlord that
it is exercising its Right of First Opportunity to lease the space.

The term of the lease of the space shall  commence on the date  specified in the
Landlord's  Notice, but no earlier than 90 days after the date of the Landlord's
Notice and shall expire on the expiry of the Term of this Lease or any permitted
renewal  thereof.  The basic rent payable on the space shall be the current fair
market  rental as agreed  between the  Landlord  and the Tenant or failing  such
agreement as determined by  arbitration  pursuant to the terms of the Commercial
Arbitration Act of the Province of British Columbia.                  ----------
- ---------------

The Landlord shall, at the Tenant's  request,  paint and recarpet the respective
space.  The  Tenant  shall  not have the  right to  assign  this  Right of First
Opportunity to lease,  except in conjunction with a permitted  assignment of all
rights under the Lease.

(e)      Option to Expand - At any time after the first anniversary of the Term,
and if the  Tenant  is not then in  default  of any of its  financial  covenants
herein  contained  on the part of the  Tenant to be  performed,  then the Tenant
shall have the option to lease any space in the Building  adjoining the Tenant's
existing  space of a minimum  of 6,800 sq.  ft. in the  Building,  by  providing
written notice to the Landlord.

The lease term on this  additional  space shall commence on the first day of the
eleventh month after the date of the Tenant's  notification  and shall terminate
on the expiry of the Term of the Lease or any  permitted  renewal  thereof.  The
basic rent payable on the  additional  space shall equal the current fair market
rent; however, no less than the rate per square foot payable on the Premises. If
the  adjoining  space is occupied by another  tenant at the time that the Tenant
exercises this option to lease, this option shall apply to all, but not part of,
the prior  tenant's  existing  space.  Upon the Tenant taking  possession of the
adjoining  space it shall  reimburse  the  Landlord  for the  actual  verifiable
relocation cost of the previous tenant up to a maximum of $10.00 per sq. ft.
of the space vacated by the previous tenant.

(f)      Relocation of Other Tenants to  Accommodate Tenant - The Landlord shall
provide in leases of space in the  Building to any tenant other than the Tenant,
that such  tenants  shall  relocate  elsewhere  in the  Building  or to the 8525
Building,  as  defined in  section  12.2  herein,  in order to  accommodate  the
Tenant's  expansion  options  contained in paragraphs (b) and (e) hereof. If the
Landlord does not obtain such a relocation  provision in such third party leases
and the Tenant wishes to exercise its expansion options as set out in paragraphs
(b) and (e) hereof,  then the Landlord will lease to the Tenant comparable space
in the 8525 Building or the Building at a rental  equivalent to 65 % of the then
current market rental for such space.

This Relocation  Provision will become null and void upon the Tenant occupying a
total of 115,000 sq. ft. in the Building.

(g)      Interpretation - As  used in  this Article  15.11,  the term "Building"
refers only to the Building  shown as "Phase II Building" on Schedule  "A1", and
not to any bigger building of which the Building may become a part.

<PAGE>

IN WITNESS  WHEREOF the Landlord and Tenant have executed this Lease the day and
year first above written on page 1 hereof.


THE CORPORATE SEAL of PILOT PACIFIC DEVELOPMENTS INC.,    )
was hereto affixed in the presence of:                    )
                                                          )
                                                          )
_____________________________                             )                  c/s
                                                          )
                                                          )
- -----------------------------                             )
                                                          )



THE CORPORATE SEAL of PMC- SIERRA, INC. was hereto        )
affixed in the presence of:                               )
                                                          )
- ----------------------------                              )
Authorized Signatory                                      )                  c/s
                                                          
- ----------------------------                              )
Authorized Signatory                                      )
                                                          )





<PAGE>



                                                     
                                  SCHEDULE "A1"


                                ATTACH SITE PLAN


<PAGE>

                                  SCHEDULE "A2"


                               ATTACH FLOOR PLANS


<PAGE>


                                                        
                                  SCHEDULE "B"

                                    THE LAND

   
^LOT 2

P.I.D. # 017-485-631
LOT 2 DISTRICT LOT 56
GROUP 1, NEW WESTMINSTER
DISTRICT PLAN LMP1598



LOT 1

P.I.D. # 017-485-622
LOT 1 DISTRICT LOT 56
GROUP 1, NEW WESTMINSTER
DISTRICT PLAN LMP1598
    


<PAGE>

                                  SCHEDULE "C"


                              RULES AND REGULATIONS


16       The Landlord  shall  have the  right to control and  operate the public
portions  of the  Building  and the  public  facilities,  as well as  facilities
furnished for the common use of the tenants, in such manner as it deems best for
the benefit of the tenants generally. No tenant shall invite to the Premises, or
permit the visit of,  persons in such  numbers  or under such  conditions  as to
interfere  with the use and enjoyment of the facilities of the Building by other
tenants.

17       The  sidewalks,  driveways and  entrances  shall  not be  encumbered or
obstructed  by tenants or tenants'  agents,  servants,  employees,  licensees or
invitees,  or be used by them for any  purpose  other  than for  ingress  to and
egress from the Premises.  Landlord  reserves the right to restrict and regulate
the use of the  aforementioned  public  areas of the  Building  by  tenants  and
tenants'  agents,  employees,  servants,  licensees  and invitees and by persons
making  deliveries  to  tenants.  All  loading  and  unloading  of  merchandise,
supplies,  materials,  garbage,  refuse  or other  chattels  shall be made  only
through or by means of such doorway as the Landlord  shall  designate in writing
from time to time.

18       Unless  specifically  provided for  in the Lease or in the Agreement to
         Lease or in any agreement made between the Landlord and the Tenant:

                  .1 No awnings or other  projections  shall be  attached to the
         outside walls of the Building.  No curtains,  blinds, shades or screens
         shall be  attached  to, or hung in,  or used in  connection  with,  any
         window or door of the Premises,  without the prior  written  consent of
         Landlord.  Such curtains,  blinds,  shades,  screens and other fixtures
         must be of a quality,  type,  design and  colour,  and  attached in the
         manner approved by Landlord.

                  .2 No sign, advertisement,  notice or other lettering shall be
         exhibited, inscribed, painted or affixed by any tenant on any window or
         part of the outside or inside of the Premises or the  Building  without
         the prior written consent of Landlord. In the event of the violation of
         the  foregoing  by any tenant,  Landlord  may remove  same  without any
         liability,  and may charge the expense incurred by such removal to such
         tenant.

                  .3 No showcases or other  articles shall be put in front of or
         affixed to any part of the exterior of the Building.

19       The toilets, urinals, sinks and other water apparatus shall not be used
for any  purposes  other  than  those for which  they were  constructed,  and no
sweepings,  rubbish,  rags,  coffee grinds,  ashes or other  substances shall be
thrown therein.  Any damage resulting by misuse shall be borne by the tenants by
whom or by whose agents, servants, employees, customers or invitees the same was
caused.  Tenants  shall not let the water run  unless it is in actual  use,  and
shall not deface or damage any part of the Building.  The Tenant shall repair to
the  satisfaction  of the  Landlord  any holes or  damage in or to the  Building
resulting from the Tenant driving nails, spikes, hooks, or screws into the walls
or woodwork of the  Building,  and the Tenant  shall  remove such nails,  spikes
hooks, or screws on or by the end of the Term.

20       No  vehicles  or animals or birds of any kind shall be brought  into or
kept in the  Building or the Premises.

21       No space in the Building  shall be used for lodging,  sleeping,  or any
immoral  or  illegal purposes.

22       Tenants shall not make or permit to be made, any unseemly or disturbing
noises or disturb or interfere with occupants of this or neighbouring  buildings
or premises or those having business with them whether by the use of any musical
instrument,  radio,  television,  talking machine,  unmusical noise,  whistling,
singing or in any other way.  Tenants shall not throw anything out of the doors,
windows, or skylights, if any, of the Building.

23       No additional locks or bolts of any  kind shall be  placed upon  any of
the doors or windows by  tenants,  nor shall any changes  whatsoever  be made to
existing locks or the mechanics  thereof except by the Landlord,  at its option.
Tenants shall not permit any duplicate keys to be made,  but additional  keys as
reasonably required shall be supplied by the Landlord when requested by a tenant
in writing and such keys shall be paid for by the tenant,  and upon  termination
of tenant's  lease,  the tenant shall  surrender to the Landlord all keys of the
Premises and other part or parts of the Building.
<PAGE>

24       The  tenants  and  their  agents,  servants,  contractors,  invitees or
employees, shall not bring in or take out, position,  construct, install or move
any safe or other heavy equipment without first obtaining the consent in writing
of the Landlord.  In giving such consent,  the Landlord  shall have the right in
its sole discretion, to prescribe the weight permitted and the position thereof,
and the use and design of plans,  skids or  platforms to  distribute  the weight
thereof.  All  damage  done to the  Building  by moving or using any such  heavy
equipment  or other  office  equipment  or  furniture  shall be  repaired at the
expense of the Tenant.

25       Tenants  shall not occupy or permit any portion  of the Premises  to be
occupied  for the  possession,  storage,  manufacture,  or sale of  narcotics or
drugs, except as incidental to tenant's main business.

26       All  entrance  doors in  the  Premises  shall be  left  locked  and all
windows shall be left closed by tenants when the Premises are not in use.

 27      Neither tenants  nor their servants,   employees, agents,  visitors, or
licensees  shall at any time bring or keep upon the  Premises  any  inflammable,
combustible or explosive fluid,  chemical or substance,  nor do nor permit to be
done  anything in conflict  with any  insurance  policy which may or might be in
force upon the Building or any part thereof or with the laws  relating to fires,
or with the regulations of the Fire Department or the Health Department, or with
any of the rules,  regulations  or  ordinances of the city in which the Premises
are located, or of any other duly constituted authority.

28       Tenants shall not,  without first obtaining  Landlord's  prior  written
approval,  conduct any  restaurant,  luncheonette,  or cafeteria for the sale or
service of food or beverages to others, or cause or permit any odours of cooking
or other  process or any  unusual or  objectionable  odours to emanate  from the
Premises.

 29      Lists of automobile licence numbers of  people working in  the Building
and the names of people who normally work off-hours may be required by Landlord,
who may also  require  tenants'  employees  to  display a card or  sticker  as a
prerequisite to admission to any parking facility.

30       The Landlord reserves the right to promulgate,  rescind, alter or waive
any  rules  or  regulations  at any time  prescribed  for the  Building  when is
necessary,  desirable or proper for its best  interest and in the opinion of the
Landlord, for the best interest of the tenants.

31       The tenants shall promptly  notify the Landlord  of all requests by any
taxing authority for information  relating to the Premises (including  fixtures,
improvements,  or machinery and equipment therein) or the tenant's occupation or
use  thereof and any such  information  to be given by the tenant to such taxing
authority  shall be forwarded by the tenant to the Landlord for delivery to such
taxing authority.

32       If any apparatus used or installed by  a tenant  requires a permit as a
condition for its installation,  the tenant must file a copy of such permit with
Landlord.

33       Tenants shall be responsible for the cleaning of any  window  coverings
installed in their Premises.

34       Tenants shall not burn any trash or garbage in or about the Premises o
anywhere  within the confines of the Land.

<PAGE>
                                  SCHEDULE "D"

                              ESTOPPEL CERTIFICATE

THE  UNDERSIGNED,  the Tenant in the Lease between  Pilot  Pacific  Developments
Inc., as agent for KAB  Properties  Inc. and the  undersigned,  dated the day of
1995, certifies:



<PAGE>



35       THAT the Tenant's obligation  to pay rent  pursuant to Article 4 of the
Lease commenced on the day of 1st day of , 1996.


36       THAT  the Lease  has not been  altered  or  amended  since  the time of
execution and is in full force and effect in accordance with its original terms.

37       THAT  the  Rentable  Area of  the  Premises  measured  as  provided  in
Article 2.1 of the Lease,  actually  comprises an area of square feet.  The Base
Rent  reserved  pursuant  to  Article  4.1 of the said  Lease,  adjusted  having
reference to the aforesaid measurement is:

38       THAT the Tenant is in possession of the Premises.

39       THAT the Lease is an absolutely  net Lease to the Landlord and that the
Tenant is paying  (and has  paid)  effective  to the day of , 19 , Base Rent (as
adjusted) and all other charges,  including,  without limitation, the Additional
Rent  referred to in Article  4.2,  pursuant to the said  Lease,  and  commenced
paying the same on the date that the Tenant's  obligation to pay rent commenced,
as aforesaid.

40       THAT  the  amount  of prepaid rent or  security  deposit  held  by  the
Landlord is $

41       THAT  the  Premises  have  been   completed  in  accordance   with  any
obligations  of the Landlord and the  Premises  are  entirely  satisfactory  and
suitable for the use thereof as contemplated by the Tenant.

42       THAT neither the Landlord nor the  Tenant is in  default  in respect o
the Lease.

43       THAT  the Tenant has  no claims, charges,   defences, right to set-off,
lien,  abatement  or  counterclaim  against  the  Landlord in respect of Rent or
otherwise.


DATED at the City of                    , in the Province of                    
                    ------------------                       -------------------
this day of                        , 19     . 
            ----------------------     ----

                                       TENANT
  


                                       Per:_________________________________ c/s
                                              Authorized Signing Officer



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