AVANT CORP
10-Q, 1997-05-15
PREPACKAGED SOFTWARE
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-Q


[x] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE
    ACT OF 1934

                  For the quarterly period ended March 31, 1997


[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
    ACT OF 1934

                For the transition period from _______ to _______

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

                         Commission File Number 0-25864

                               AVANT! CORPORATION
             (Exact name of registrant as specified in its charter)

            Delaware                                            94-3133226
(State or other jurisdiction of                              (I.R.S. Employer
 incorporation or organization)                              Identification No.)


                             1208 East Arques Avenue
                           Sunnyvale, California 94086
          (Address of principal executive offices, including zip code)

       Registrant's telephone number, including area code: (408) 738-8881


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. [ x ] Yes [ ] No



The number of shares  outstanding of the  registrant's  common stock as of April
30, 1997 was 25,596,346.



<PAGE>


                               AVANT! CORPORATION

                                    FORM 10-Q

                                 March 31, 1997

<TABLE>

                                      INDEX


<CAPTION>
PART 1.        FINANCIAL INFORMATION                                                         Page
<S>                                                                                            <C>
Item 1.        Financial Statements

               Consolidated Balance Sheets as of March 31, 1997 and
               December 31, 1996                                                                1

               Consolidated Statements of Income for the Three Months
               Ended March 31, 1997 and 1996                                                    2

               Consolidated Statements of Cash Flows for the Three Months
               Ended March 31, 1997 and 1996                                                    3

               Notes to Consolidated Financial Statements                                       4

Item 2.        Management's Discussion and Analysis of Financial Condition
               and Results of Operations                                                        6

PART 2.        OTHER INFORMATION

Item 1.        Legal Proceedings                                                               11

Item 2.        Changes in Securities                                                           12

Item 3.        Defaults Upon Senior Securities                                                 12

Item 4.        Submission of Matters to a Vote of Security Holders                             12

Item 5.        Other Information                                                               12

Item 6.        Exhibits and Reports on Form 8-K                                                12

Signature Page                                                                                 13

Exhibit Index                                                                                  14

</TABLE>


<PAGE>


                                         PART 1. FINANCIAL INFORMATION
<TABLE>
Item 1.  Financial Statements
                                               AVANT! CORPORATION
                                          CONSOLIDATED BALANCE SHEETS
                                     (in thousands, except per share data)

                                                                                                   March 31,            December 31,
                                                                                                     1997                  1996
                                                                                                   ---------              ---------
                                                                                                  (unaudited)
<S>                                                                                                <C>                    <C>      
Assets
Current assets:
   Cash and cash equivalents                                                                       $  73,602              $  33,067
   Short-term investments                                                                             55,883                 84,256
   Accounts receivable, net                                                                           11,816                 13,321
   Deferred income taxes                                                                               5,872                  6,450
   Prepaid income taxes                                                                                 --                    1,254
   Other assets                                                                                        8,533                  7,892
                                                                                                   ---------              ---------
     Total current assets                                                                            155,706                146,240

Equipment, furniture and fixtures, net                                                                10,366                  8,929
Capitalized software, net                                                                                 46                     62
Other assets                                                                                             975                    872
                                                                                                   ---------              ---------

     Total assets                                                                                  $ 167,093              $ 156,103
                                                                                                   =========              =========

Liabilities and Shareholders' Equity
Current liabilities:
   Current portion of capital lease obligations                                                    $      31              $      52
   Accounts payable                                                                                    1,791                  1,716
   Accrued compensation                                                                                4,861                  4,082
   Accrued income taxes                                                                                1,846                   --
   Other accrued liabilities                                                                           6,692                  9,947
   Current portion of technology acquisition payable                                                     963                    642
   Deferred revenue                                                                                   15,417                 13,824
                                                                                                   ---------              ---------
     Total current liabilities                                                                        31,601                 30,263

Deferred rent                                                                                             61                     71
Other noncurrent liabilities                                                                              43                     43
Technology acquisition payable, less current portion                                                     498                    903
                                                                                                   ---------              ---------
   Total liabilities                                                                                  32,203                 31,280
                                                                                                   ---------              ---------

Commitments and contingencies

Shareholders' equity:
Series A convertible preferred stock, $.000l par value;
   5,000 shares authorized;
   no shares issued and outstanding in 1997 and 1996                                                    --                     --
Common  stock, $.0001 par value; 50,000 shares authorized;
   25,288 and 24,952 shares issued and outstanding
   at March 31, 1997 and December 31,1996, respectively                                                    3                      3
Additional paid-in capital                                                                           113,562                110,583
Deferred compensation                                                                                 (2,520)                (2,820)
Net unrealized loss on short-term investments                                                           (111)                   (75)
Retained earnings                                                                                     23,956                 17,132
                                                                                                   ---------              ---------
     Total shareholders' equity                                                                      134,890                124,823
                                                                                                   ---------              ---------

     Total liabilities and shareholders' equity                                                    $ 167,093              $ 156,103
                                                                                                   =========              =========

<FN>
                          See  accompanying  notes  to  consolidated   financial statements.
</FN>
</TABLE>
                                                                  1

<PAGE>



                               AVANT! CORPORATION
                        CONSOLIDATED STATEMENTS OF INCOME
                      (in thousands, except per share data)
                                   (unaudited)




                                                           Three Months Ended
                                                                March 31,
                                                       -------------------------
                                                         1997             1996
                                                       --------         --------
Revenue:
   Software                                            $ 23,998         $ 18,603
   Services                                               7,195            4,944
                                                       --------         --------
     Total revenue                                       31,193           23,547
                                                       --------         --------
Costs and expenses:
   Costs of software                                        448              615
   Costs of services                                      3,018            1,935
   Selling and marketing                                  8,222            6,242
   Research and development                               5,965            5,269
   General and administrative                             3,806            2,735
                                                       --------         --------
     Total operating expenses                            21,459           16,796
                                                       --------         --------
     Income from operations                               9,734            6,751
Interest income                                           1,069              908
Other income (expense)                                     (140)               0
                                                       --------         --------
     Income before income taxes                          10,663            7,659
Provision for income taxes                                3,839            2,745
                                                       --------         --------
     Net income                                        $  6,824         $  4,914
                                                       ========         ========

Net income per common share                            $   0.25         $   0.19
                                                       ========         ========
Weighted average number of
   common and common equivalent
   shares outstanding                                    27,298           26,120
                                                       ========         ========



          See accompanying notes to consolidated financial statements.



<PAGE>


<TABLE>

                                               AVANT! CORPORATION
                                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                                 (in thousands)
                                                  (unaudited)

<CAPTION>

                                                                                                          Three Months Ended
                                                                                                               March 31,
                                                                                                     ------------------------------
                                                                                                       1997                  1996
                                                                                                     --------              --------
<S>                                                                                                  <C>                   <C>     
Cash flows from operating activities:
   Net income                                                                                        $  6,824              $  4,914
   Adjustments to reconcile net income to net cash
     provided by operating activities:
     Depreciation                                                                                         973                   696
     Amortization of capitalized software costs                                                            16                    27
     Amortization of deferred compensation                                                                300                    40
     Deferred income taxes                                                                                578                  (607)
     Deferred rent                                                                                        (10)                   64
     Stock compensation expense (benefit)                                                                  27                   (26)
     Changes in operating assets and liabilities:
       Accounts receivable, net                                                                         1,505                  (434)
       Prepaid income taxes and other assets                                                              510                (1,955)
       Accounts payable                                                                                    75                   983
       Accrued compensation                                                                               779                   (16)
       Accrued income taxes                                                                             2,346                 1,940
       Other accrued liabilities                                                                       (3,255)                  (78)
       Deferred revenue                                                                                 1,593                 2,316
                                                                                                     --------              --------
         Net cash provided by operating activities                                                     12,261                 7,864
                                                                                                     --------              --------
Cash flows from investing activities:
   Purchases of short-term investments                                                                (42,701)              (61,744)
   Maturities and sales of short-term investments                                                      71,038                38,500
   Purchases of equipment, furniture and fixtures                                                      (2,410)               (1,416)
                                                                                                     --------              --------
         Net cash provided by (used in) investing activities                                           25,927               (24,660)
                                                                                                     --------              --------
Cash flows from financing activities:
   Principal payments under capital lease obligations                                                     (21)                  (29)
   Payments on technology acquisition payable                                                             (84)                 (839)
   Exercise of stock options                                                                            1,708                   258
   Issuance of common stock under employee stock purchase plan                                            744                  --
                                                                                                     --------              --------
         Net cash provided (used by) financing activities                                               2,347                  (610)
                                                                                                     --------              --------
Net increase (decrease) in cash and cash equivalents                                                   40,535               (17,406)
Cash and cash equivalents, beginning of period                                                         33,067                50,010
                                                                                                     --------              --------
Cash and cash equivalents, end of period                                                             $ 73,602              $ 32,604
                                                                                                     ========              ========

<FN>
                          See  accompanying  notes  to  consolidated   financial statements.

</FN>
</TABLE>


                                                                  3



<PAGE>



                               AVANT! CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (unaudited)

1. BASIS OF PRESENTATION

   The unaudited  consolidated  financial statements include the accounts of the
Company and its wholly owned subsidiaries. All significant intercompany accounts
and transactions  have been eliminated.  The consolidated  financial  statements
have been  restated  to reflect the effect of the mergers  with,  Anagram,  Inc.
(Anagram),  Meta-Software  Inc.  (Meta) and FrontLine  Design  Automation,  Inc.
(FrontLine)  discussed in Note 4. In the opinion of management,  all adjustments
(consisting  only  of  normal  recurring   adjustments)  necessary  for  a  fair
presentation  of financial  position and results of  operations  have been made.
Operating results for interim periods are not necessarily  indicative of results
which may be expected  for a full year.  The  information  included in this Form
10-Q should be read in conjunction with Management's  Discussion and Analysis of
Financial  Condition  and  Results  of  Operations  and  the  1996  consolidated
financial  statements and notes thereto  included in the Company's annual report
on Form 10-K filed with the  Securities and Exchange  Commission  (SEC) and Form
S-3 as declared effective by the SEC on January 31, 1997.

   The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect  the  reported  amounts  of assets  and  liabilities  and  disclosure  of
contingent  assets and  liabilities at the date of the financial  statements and
reported  amounts of revenues and expenses during the reporting  period.  Actual
results could differ from those  estimates.  Certain  financial  statement items
have been reclassified to conform to the current period's format.

2. NET INCOME PER SHARE

   Net income per share is computed using the weighted  average number of common
and common equivalent  shares  outstanding  during each period presented.  Fully
diluted  and  primary  income  per  share  are the same for each of the  periods
presented.  Common stock equivalents  consist of stock options and awards (using
the treasury stock method).

3. STATEMENTS OF CASH FLOWS

   Net income taxes refund of $851,000  was  received and  $2,911,000  of income
taxes  were  paid  during  the  three  months  ended  March  31,  1997 and 1996,
respectively.  Interest of $83,000 was paid during the three  months ended March
31, 1996. An income tax benefit attributable to employee stock plans of $500,000
and $303,000 was credited to equity during the three months ended March 31, 1997
and 1996, respectively,  which is included in the change in accrued income taxes
and change in prepaid income tax and other assets, respectively.

4. MERGERS

   On November 27, 1996, the Company issued  approximately  1,812,000  shares of
its  common  stock for all of the  outstanding  common  stock of  FrontLine  and
assumed approximately 410,000 warrants and stock options under option plans.

   On October 29, 1996, the Company  issued  approximately  4,471,000  shares of
Avant! common stock for all of the outstanding common stock of Meta, and assumed
approximately  608,000 stock options and subscriptions under option and purchase
plans.

   On September 27, 1996, the Company issued  approximately  2,154,000 shares of
its  common  stock for all of the  outstanding  common  and  preferred  stock of
Anagram,  and assumed  approximately  260,000 stock options under various option
plans.

    These  FrontLine,  Meta  and  Anagram  mergers  described  above  have  been
accounted  for  as  pooling  of  interests  and,   accordingly,   the  Company's
consolidated  financial  statements  have been restated for all periods prior to
the mergers to include the results of  operations,  financial  position and cash
flows of Anagram, Meta and FrontLine.


                                       4
<PAGE>

5. LITIGATION

   The Company is involved in various  litigation matters as discussed in Item 1
of Part 2 of this Form 10-Q.  On April 11, 1997, a criminal  complaint was filed
against,  among others, the Company and six officers and employees.  The Company
has charged to expenses  approximately  $1,711,000  and  $756,000 in  litigation
expenses during the three months ended March 31, 1997 and 1996, respectively.

6.  COMMITMENTS

   In February 1997, the Company signed four leases for its new  headquarters in
Fremont,  California.  The leases  cover four  buildings  with an  aggregate  of
approximately  281,000  square feet of space with an aggregate  annual base rent
amount of  approximately  $4,800,000.  The  leases  for  three of the  buildings
expires on  September 1, 2010 and the fourth  building on August 31,  2012.  The
Company expects to move into its new headquarters in July 1997.

7. RECENT PRONOUNCEMENTS

   The  Financial  Accounting  Standards  Board  recently  issued  Statement  of
Financial  Accounting Standards (SFAS) No. 128, Earnings Per Share. SFAS No. 128
requires the presentation of basic earnings per share ("EPS") and, for companies
with complex  capital  structures,  diluted EPS.  SFAS No. 128 is effective  for
annual and interim  periods ending after December 15, 1997. The Company  expects
that basic EPS will be higher than  primary  earnings  per share as presented in
the accompanying  consolidated financial statements and the diluted EPS will not
differ   materially  from  primary  earnings  per  share  as  presented  in  the
accompanying consolidated financial statements.



                                       5



<PAGE>



Item 2. Management's  Discussion and Analysis of Financial Condition and Results
        of Operations


    The discussion in this Form 10-Q contains forward-looking  statements within
the meaning of Section 27A of the  Securities Act of 1933 and Section 21E of the
Securities  Exchange  Act of 1934  that  involve  risks and  uncertainties.  The
Company's  actual results could differ  materially from those discussed  herein.
Factors that could cause or contribute to such differences  include, but are not
limited to, those discussed in "Quarterly  Results" and "Factors That May Impact
Future  Operations" as well as those  discussed in this section and elsewhere in
this Form 10-Q, and the risks discussed in the "Risk Factors"  section  included
in the Company's Registration Statement on Form S-1 as declared effective by the
Securities  and Exchange  Commission on June 6, 1995 (Reg.  No.  33-91128),  the
Registration  Statements on Form S-4 as declared effective by the Securities and
Exchange Commission on October 23, 1995 (Reg. No. 33-96648) and on September 30,
1996 (Reg. No.  333-11659),  the Registration  Statement on Form S-3 as declared
effective by the SEC on January 31, 1997,  and other risks detailed from time to
time in the Company's Securities and Exchange Commission reports,  including the
report on Form 10-K for the year ended December 31, 1996.

Overview

   Avant!  Corporation,  (the Company)  develops,  markets and supports software
products  that  assist  design  engineers  in  the  physical   layout,   design,
verification,  simulation and timing  analysis of advanced  integrated  circuits
(ICs). The Company's strategy is to focus on productivity enhancing software for
the integrated circuit design automation (ICDA) segment of the electronic design
automation (EDA) market.

    Effective  September 27, 1996,  October 29, 1996, and November 27, 1996, the
Company merged with Anagram, Meta, and FrontLine, respectively. The mergers have
been accounted for by the  pooling-of-interests  method,  and  accordingly,  the
Company's  consolidated  financial  statements give  retroactive  effect for all
periods presented to include the results of operations,  financial position, and
cash flows of Anagram, Meta, and FrontLine.

   The Company began shipping Hercules  (formerly  VeriCheck),  its hierarchical
physical  verification  software,  in the third quarter of 1992,  and,  Aquarius
(formerly  ArcCell),  its cell-based place and route software product,  in 1993.
Anagram  was  founded  in  March  1993,   and  began  shipping   Star-Sim,   its
high-capacity  circuit simulation and high-accuracy timing analysis software, in
December 1994.  Meta was founded in 1980,  when it introduced its simulation and
library software products including Star-Hspice.  FrontLine was founded in 1993.
Substantially  all of the Company's revenue for the three months ended March 31,
1997 and 1996 was derived from the licensing and support of Aquarius,  Hercules,
Star-Sim and Star-Hspice.




                                       6


<PAGE>


Results of Operations

     The following  table sets forth the percentage of total revenue for certain
items in the Company's Consolidated Financial Statements (after giving effect to
rounding) for the periods indicated:

                                                             Three Months Ended
                                                                   March 31,
                                                             -------------------
                                                             1997           1996
                                                             ---            --- 
Percentage of total revenue
  Software .......................................            77             79
  Services .......................................            23             21
                                                             ---            --- 
      Total revenue ..............................           100%           100%
Costs and expenses:
  Costs of software ..............................             2              3
  Costs of services ..............................            10              8
  Selling and marketing ..........................            26             26
  Research and development .......................            19             22
  General and administrative .....................            12             12
                                                             ---            --- 
     Total operating expenses ....................            69             71
                                                             ---            --- 
     Income from operations ......................            31             29
Interest income ..................................             3              4
Other income (expense) ...........................           --             --
                                                             ---            --- 
    Income before income taxes ...................            34             33
Provision for income taxes .......................            12             12
                                                             ---            --- 
     Net income ..................................            22%            21%
                                                             ===            === 

Comparison of Three Months Ended March 31, 1997 and 1996

         Revenue.  Revenue  consists  primarily  of  fees  for  licenses  of the
Company's software products,  maintenance and customer support. Revenue from the
sale of software licenses is recognized after shipment of the products, delivery
of permanent  authorization  codes and fulfillment of acceptance  terms, if any,
providing  that no  significant  vendor and  post-contract  support  obligations
remain and  collection  of the related  receivable  is probable.  Any  remaining
insignificant  vendor or  post-contract  support  obligations are accrued at the
time the  revenue is  recognized.  In  instances  where  there is a  contingency
regarding the sale,  revenue  recognition is delayed until the  contingency  has
been resolved.  When the Company receives advance payment for software products,
such payments are reported as deferred  revenue until all conditions for revenue
recognition  are met. The Company has entered into  certain  license  agreements
under which software,  support and other services are provided to a customer for
a bundled price for a specific period. Generally,  revenue under such agreements
is recognized ratably over the contract period.  Maintenance revenue is deferred
and  recognized  ratably over the term of the  maintenance  agreement,  which is
typically  twelve  months.  Revenue from  customer  training,  support and other
services is recognized as the service is performed.

     The Company's  total  revenue  increased  32% to  $31,193,000  in the first
quarter of 1997 from $23,547,000 in the first quarter of 1996. The percentage of
the Company's total revenue  attributable to software licenses  decreased to 77%
in the first quarter of 1997 from 79% in the first quarter of 1996. The decrease
is  primarily  due  to  the  increased  user  base  and  resulting  increase  in
maintenance revenue.  Increases in total revenue were due primarily to increased
license revenue from the Company's place and route,  physical  verification  and
analysis  software.  To date, price increases have not been a material factor in
the Company's  revenue growth.  Software revenue increased 29% to $23,998,000 in
the first quarter of 1997 from $18,603,000 in the first quarter of 1996. Revenue
from  services  increased  46% to  $7,195,000  in the first quarter of 1997 from
$4,944,000  in the  first  quarter  of  1996,  reflecting  the  growing  base of
installed systems.

                                       7
<PAGE>


     As discussed in the notes to the consolidated financial statements and Item
1 of Part II, the Company is involved in litigation with Cadence Design Systems,
Inc., and other related actions  (collectively "the Cadence  litigation").  As a
result of the Cadence  litigation,  some customers may cancel or postpone orders
of the Company's  products.  As of March 31, 1997, there had not been a material
financial  impact  on  the  Company's  revenues  as  a  result  of  the  Cadence
litigation;  however significant order delays or cancellations in the future may
impact the Company's business, financial condition and results of operations.

     Deferred  revenue  increased  to  $15,417,000  as of March  31,  1997  from
$13,824,000  as of  December  31,  1996  due  to  increases  in  the  number  of
maintenance  agreements and license  agreements  where software and services are
provided  for a specific  period  and  revenue is  recognized  ratably  over the
contract period.

     Costs  of  Software.  Costs  of  software  consist  primarily  of  expenses
associated  with  product   documentation   and  production  costs  as  well  as
amortization  of  capitalized  software  costs.  Costs of software  decreased to
$448,000  in the first  quarter of 1997 from  $615,000  in the first  quarter of
1996. Costs of software decreased primarily due to a product launch in the first
quarter of 1996.

     Costs of Services.  Costs of services  consist of costs of maintenance  and
customer  support,  and direct costs  associated  with providing other services.
Maintenance  includes  activities  undertaken after the product is available for
general release to customers to correct errors, make routine changes and provide
additional  features.  Customer support  includes any  installation  assistance,
training classes, telephone question and answer services,  newsletters,  on-site
visits and  software  or data  modifications.  Costs of  services  increased  to
$3,018,000 in the first quarter of 1997 from  $1,935,000 in the first quarter of
1996.  The  increase in costs of services  was due  primarily  to an increase in
personnel  and  expenses  necessary  to support the  Company's  growing  base of
installed software. The increase in costs of services revenue as a percentage of
services  revenue  increased to 42% in the first quarter of 1997 from 39% in the
first quarter of 1996.

     Selling and  Marketing  Expenses.  Selling and marketing  expenses  consist
primarily of costs,  including sales  commissions,  of all personnel involved in
the sales process.  This includes sales  representatives,  marketing associates,
benchmarking  personnel and field application  engineers.  Selling and marketing
expenses also include costs of advertising,  public  relations,  conferences and
trade shows. Selling and marketing expenses increased to $8,222,000 in the first
quarter  of 1997 from  $6,242,000  in the first  quarter of 1996.  The  increase
reflects  significant  increases in sales  personnel.  As a percentage  of total
revenue,  selling and marketing  expenses  remained constant at 26% in the first
quarter of both 1997 and 1996.

     Research  and  Development  Expenses.  Research  and  development  expenses
include  all  costs   associated  with  the  development  of  new  products  and
significant enhancement of existing products.  Research and development expenses
increased to  $5,965,000  in the first  quarter of 1997 from  $5,269,000  in the
first  quarter of 1996.  The  increases  in research  and  development  expenses
resulted from increased  personnel-related costs associated with the development
of new products and enhancement of existing  products.  Research and development
expenses  represented  19% and 22% of total revenue in the first quarter of 1997
and 1996,  respectively.  No software  development costs were capitalized in the
first quarter of both 1997 or 1996.

     General and Administrative  Expenses.  General and administrative  expenses
increased to  $3,806,000  in the first  quarter of 1997 from  $2,735,000  in the
first quarter of 1996.  The increases  were primarily due to legal and personnel
costs.  As a percentage of total revenue,  general and  administrative  expenses
remained  constant  at 12% for the first  quarter  of both  1997 and  1996.  The
Company expects to incur  significant legal expenses in the future in connection
with the Cadence litigation.

     Income from Operations.  The Company had operating income of $9,734,000 and
$6,751,000 in the first quarter of 1997 and 1996, respectively.  The increase in
operating  income is  attributable  to revenue growth net of increased  expenses
necessary to support the Company's growth.  Operating income represented 31% and
29% of total revenue in the first quarter of 1997 and 1996, respectively.

     Interest  Income.  Interest income was $1,069,000 and $908,000 in the first
quarter of 1997 and 1996, respectively.

                                       8
<PAGE>

     Other income  (expense).  Other expense of $140,000 in the first quarter of
1997 was due to the Company's  pro-rata share of losses from the Company's joint
venture distributor in Korea.

     Income Taxes. The Company accounts for income taxes in accordance with SFAS
No. 109. The provision  for income taxes was  $3,839,000  and  $2,745,000 in the
first quarter of 1997 and 1996, respectively.  The provision for income taxes as
a percentage of pre-tax income was 36% for the first quarter of 1997 and 1996.

Quarterly Results

    The Company's  quarterly  results have varied in the past and may be subject
to  fluctuations  resulting from a variety of factors,  including the outcome of
outstanding  litigation,  purchasing  patterns of customers,  the  completion of
product evaluations by customers, the timing of product enhancements and product
introductions  by the Company and its  competitors and the timing of significant
orders.  The customer  evaluation process for the Company's products is lengthy,
and the timing and  outcome of such  evaluations  have  affected  the  Company's
historical  quarterly  performance and may impact future  quarterly  results.  A
substantial portion of the Company's revenue in each quarter results from orders
received in the same quarter.  The Company's  expense levels are based, in part,
on its  expectations as to future revenue.  The Company  continues to expand and
increase its operating expenses in order to generate and support future revenue.
If revenue  levels are below  expectations,  operating  results are likely to be
disproportionately  affected  because  only a  small  portion  of the  Company's
expenses varies with its revenue.  As a result, the Company believes that period
to period  comparison of financial  results are not  necessarily  meaningful and
should not be relied upon as an indication of future performance.

     Due to the factors  noted above,  the Company's  future  earnings and stock
price may be subject to  significant  volatility,  particularly  on a  quarterly
basis.  Any shortfall in revenues or earnings from levels expected by securities
analysts could have an immediate and  significant  adverse effect on the trading
price of the Company's common stock. Additionally,  the Company may not learn of
such shortfalls  until late in a fiscal  quarter,  which could result in an even
more immediate and adverse  effect on the trading price of the Company's  common
stock.

Liquidity and Capital Resources

     Net cash provided by operations was $12,261,000 and $7,864,000 in the first
quarter of 1997 and 1996,  respectively.  The Company  provided  $25,927,000 and
used   $24,660,000  of  net  cash  in  the  first  quarter  of  1997  and  1996,
respectively,   for  investing  activities.   Net  cash  provided  in  investing
activities  relates  primarily to net  purchases  and  maturities  of short-term
"available-for-sale"  securities,  which was $28,337,000 in the first quarter of
1997 and net cash  used in  investing  activities  of  $24,660,000  in the first
quarter of 1996. The securities, which are accounted for in accordance with SFAS
No. 115,  consist of short-term debt  securities,  U.S.  Government  Agency debt
securities,  U.S. Treasury Bills,  municipal/corporate  auction preferred stock,
municipal bonds, and demand deposit investments in limited maturity fixed income
mutual funds. Cash was also used to acquire  equipment,  furniture and fixtures,
primarily  computer  workstations  and  file  servers  for use by the  Company's
employees.  The Company expects that purchases of equipment will likely increase
as the Company's employee base grows.

    The Company's  stated payment terms generally are net 30 days.  However,  in
the Company's experience, many customers do not comply with stated payment terms
due to industry  practice,  slower  payment by certain major  companies and most
foreign customers,  and general economic  conditions.  The Company  periodically
increases its allowance for doubtful  accounts to reflect increased sales levels
and collection experience.  The Company believes that its allowance for doubtful
accounts is adequate.

     As of March 31, 1997, the Company had  $129,485,000  of cash and short-term
investments  and  $124,105,000  of working  capital.  As of March 31, 1997,  the
Company  had  $31,601,000  in  current  liabilities,  including  $15,417,000  of
deferred  revenue.  As of March 31, 1997,  the Company had  $6,692,000  in other
accrued  liabilities.  The  decrease  from  December 31, 1996 of  $3,255,000  is
primarily due to the  reduction of accrued  expenses  related to mergers.  As of
March 31, 1997, there was no bank  indebtedness  outstanding and the Company had
no  long-term  commitments  other than the  technology  acquisition  payable and
operating and capital lease obligation.

     Based on its  operating  plan,  and absent  any  adverse  judgments  in the
pending Cadence litigation,  the Company believes that it has available cash and
short-term  investments sufficient to fund the Company's operations for at least
the next twelve months.

                                       9
<PAGE>

Factors That May Affect Future Operations

    On December 6, 1995, Cadence filed an action against the Company and certain
of its officers in the Northern California United States District Court alleging
copyright infringement,  unfair competition,  misappropriation of trade secrets,
conspiracy,   breach  of  contract,   inducing  breach  of  contract  and  false
advertising.  In  addition  to  actual  and  punitive  damages,  which  were not
quantified  by Cadence,  Cadence  seeks to enjoin the sale of certain  place and
route  products.  On March 18,  1997,  the  Northern  California  United  States
District Court denied Cadence's  motion to obtain a preliminary  injunction that
would have prohibited the production and sale of Avant!'s  ArcCell,  ArcCell XO,
Aquarius XO and  Aquarius XO 2.0 products or any other  product  that Avant!  is
currently  selling.  The matter is currently  awaiting  trial,  pending  further
pretrial matters. A trial date has not been set. Avant! has filed a counterclaim
alleging antitrust  violations,  racketeering,  false  advertising,  defamation,
trade  libel,  unfair  competition,   unfair  trade  practices,   negligent  and
intentional  interference  with prospective  economic  advantage and intentional
interference with contractual relations.

    The Santa Clara County District  Attorney's office is also investigating the
allegations of  misappropriation of trade secrets set forth in Cadence's lawsuit
and filed a criminal  complaint  against the Company and six  employees on April
11,  1997.  The  Company  and the  individuals  have  pleaded not guilty and are
awaiting further  proceedings.  The criminal complaint may result in canceled or
postponed customer orders,  increased future  expenditures,  loss of certain key
employees and could have other material adverse effects on the Company.

    The Company's  products  compete with similar  products from both larger and
smaller EDA  vendors,  and with  dissimilar  EDA  products  for a share of their
customers'  EDA  budgets.  The  EDA  industry,  and as a  result  the  Company's
business,  has benefited from the rapid  worldwide  growth of the  semiconductor
industry.  There can be no  assurance  that this growth will  continue.  The EDA
industry as a whole may experience  pricing and margin pressures from a decrease
in  growth  in the  semiconductor  industry,  or other  changes  in the  overall
computer industry. In addition,  the EDA industry is experiencing  consolidation
as the major EDA vendors are seeking to provide a complete range of EDA products
to customers. There can be no assurance that the Company will be able to compete
successfully  against current and future competitors,  or that market conditions
faced by the  Company  will not  adversely  affect  its  operating  results  and
financial condition.

    The Company's  future  success  depends upon its ability to improve  current
products and develop new products  that address the  increasingly  sophisticated
needs of its customers. There can be no assurance that the Company will continue
to successfully develop  technologically  acceptable products on a timely basis.
The  Company's  ability to develop and  improve  products  is  dependent  on key
individuals  for  their  technical  and  other  contributions.  There  can be no
assurance  that the  Company  can  continue  to  attract  and  retain  these key
personnel.  Loss of certain key personnel  could result in loss of the Company's
market advantage and could adversely affect its operating  results and financial
condition.

    The American Institute of Certified Public Accountants approved for exposure
a draft  Statement of Position  (Exposure  Draft) that would supersede SOP 91-1,
Software  Revenue  Recognition.  The adoption of the  provisions of the Exposure
Draft is not expected to have a material  effect on the  Company's  consolidated
results of operations.


                                       10


<PAGE>


                            PART 2. OTHER INFORMATION

Item 1.  Legal Proceedings

    On December 6, 1995, Cadence filed an action against the Company and certain
of its officers in the Northern California United States District Court alleging
copyright infringement,  unfair competition,  misappropriation of trade secrets,
conspiracy,   breach  of  contract,   inducing  breach  of  contract  and  false
advertising.  The essence of the complaint is that certain Avant!  employees who
were formerly Cadence employees allegedly  misappropriated and improperly copied
source code for certain important  functions of Avant!  place and route products
from  Cadence,  and that the Company has allegedly  competed  unfairly by making
false statements  concerning  Cadence and its products.  The action also alleges
that  the  Company  induced  certain  individual   defendants  to  breach  their
agreements of employment and confidentiality with Cadence. In addition to actual
and punitive  damages,  which were not  quantified by Cadence,  Cadence seeks to
enjoin the sale of certain place and route products.

    On March 18, 1997,  the Northern  California  United States  District  Court
denied  Cadence's  motion to obtain a  preliminary  injunction  that  would have
prohibited the production and sale of Avant!'s ArcCell,  ArcCell XO, Aquarius XO
and  Aquarius XO 2.0  products or any other  product  that Avant!  is  currently
selling.  The matter is  currently  awaiting  trial,  pending  further  pretrial
matters. A trial date has not yet been set.

    On  January  16,  1996,  Avant!  filed  a  counterclaim  alleging  antitrust
violations,  racketeering,  false advertising,  defamation,  trade libel, unfair
competition, unfair trade practices, negligent and intentional interference with
prospective  economic  advantage and intentional  interference  with contractual
relations.  Although Avant!'s  counterclaim seeks unquantified damages according
to proof, Avant!  specifically  alleges that it has suffered losses in excess of
$500  million.  The  alleged  losses are due  largely to the decline in Avant!'s
stock market value caused by Cadence's misconduct.

    The Santa Clara County District  Attorney's office is also investigating the
allegations of misappropriation of trade secrets set forth in Cadence's lawsuit,
described  above.  On December  5, 1995,  a search  warrant was  executed at the
Company's  Sunnyvale,  California,  facility  to  determine  whether  there  was
evidence of criminal conduct.  On April 11, 1997, a criminal complaint was filed
against,  among others, the Company,  Gerald C. Hsu, President,  Chief Executive
Officer  and  Chairman  of the Board of  Directors,  Y. Eric  Cho,  Senior  Vice
President of Corporate Operations and a member of the Board of Directors,  Y. Z.
Liao,  Vice  President,  and three other  employees of the Company for allegedly
violating various  California Penal Code Sections relating to the theft of trade
secrets.  The Company and the individuals  above have pleaded not guilty and are
awaiting further  proceedings.  The criminal complaint could result in a loss of
these individuals and could have other material adverse effects on the Company.

    On December 15, 1995,  Paul Margetis and Helen  Margetis filed in the United
States District Court for the Northern District of California a securities fraud
class action complaint.  In addition,  on December 19, 1995, Fred Tarca filed in
the United States District Court for the Northern District of California a class
action  complaint for  violations of the federal  securities  laws.  These class
action lawsuits allege certain  securities law violations,  including  omissions
and/or  misrepresentation  of  material  facts.  The  alleged  omissions  and/or
misrepresentations  are largely  consistent  with those  outlined in the Cadence
claim. In February 1997,  plaintiff Tarca  voluntarily  dismissed his action and
the Margetis plaintiffs were certified as class representatives in their action.
The Margetis action has been informally  stayed pending  resolution of Cadence's
preliminary injunction motion.

    When the lawsuits were  originally  filed  against the Company,  the Company
experienced  delays in orders by customers due to the uncertainty of the pending
lawsuits  against  the  Company.  If the Company  suffers an adverse  outcome in
either  the  civil or  criminal  proceedings,  then  the  Company  would  likely
experience  future  delays in orders from  customers and would likely suffer the
loss of  customers.  If such  events  were to occur,  there  would be a material
adverse  effect on the Company's  business,  financial  condition and results of
operations.



                                       11

<PAGE>


    The Company believes it has sufficient defenses to the claims and intends to
defend itself vigorously.  If, however, Avant!'s defenses are unsuccessful,  the
Company may be enjoined from selling certain place and route products and may be
required to pay damages to Cadence. In such event, Avant!'s business,  operating
results and financial  condition  would be  materially  adversely  affected.  In
addition, it is likely that an adverse judgment against Avant! would result in a
steep  decline in the market  price of  Avant!'s  common  stock.  Although it is
reasonably  possible  the  Company  may  incur a loss upon  conclusion  of these
claims, an estimate of any loss or range of loss cannot be made, and the Company
believes,  based on information it presently  possesses,  that the conclusion of
these  claims  will  not  have  a  material  adverse  effect  on  the  Company's
consolidated  financial  position;  however,  there can be no assurance  that an
adverse  judgment,  if  granted on any claim  would not have a material  adverse
effect  on  the  Company's   business,   consolidated   financial   position  or
consolidated results of operations.

    The  Company is subject to other  claims  that have  arisen in the  ordinary
course of business.  In the opinion of management,  all such matters are without
merit or involve  amounts that would not have a material  adverse  effect on the
Company's consolidated financial position if unfavorably resolved.


Item 2.  Changes in Securities

         Not applicable.

Item 3.  Defaults Upon Senior Securities

         Not applicable.

Item 4.  Submission of Matters to a Vote of Security Holders

         None

Item 5.  Other Information

         Not applicable.

Item 6.  Exhibits and Reports on Form 8-K

         (a)  Exhibits

         The exhibits  filed as part of this  Quarterly  Report on Form 10-Q are
         listed on the Exhibit Index immediately preceding such exhibits and are
         incorporated herein by reference.

         (b)  Reports on Form 8-K

         None

                                       12
<PAGE>




                                   SIGNATURES

Pursuant  to the  requirements  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.




 Avant! Corporation
                                                 (Registrant)



May 14, 1997         `           /s/  GERALD C. HSU
                                 -----------------------------------
                                      Gerald C. Hsu
                                      President and
                                      Chief Executive Officer


May 14, 1997                    /s/  JOHN P. HUYETT
                                -----------------------------------
                                     John P. Huyett
                                     Chief Financial Officer,
                                     Treasurer, and Principal
                                     Accounting Officer


                                       13
<PAGE>



                                  EXHIBIT INDEX




                                                                     Sequential
Number                      Description                              Page Number
- ------                      -----------                              -----------
Exhibit 10.1                Property Lease Agreements                    

Exhibit 11.1                Computations of Income Per Share             

Exhibit 27.1                Financial Data Schedules                     








EXHIBIT A
File No._______________________


INDUSTRIAL SPACE LEASE
(SINGLE TENANT NET)
Renco 48

         THIS LEASE,  dated February 24, 1997,  for reference  purposes only, is
made by and between RENCO INVESTMENT  COMPANY, a California general  partnership
("Landlord"),  and AVANT! CORPORATION,  a Delaware corporation ("Tenant"), to be
effective and binding upon the parties as of the date the last of the designated
signatories to this Lease shall have executed this Lease (the "Effective Date of
this Lease").

ARTICLE 1
REFERENCES

         1.1  REFERENCES:  All  references in this Lease (subject to any further
clarifications  contained in this Lease) to the  following  terms shall have the
following meaning or refer to the respective address, person, date, time period,
amount, percentage, calendar year or fiscal year as below set forth:

         A. Tenant's Address for Notices:   AVANT! Corporation.
                                            1208 East Arques Avenue
                                            Sunnyvale, California
                                            94086

         B. Tenant's Representative:        John Huyett
            Phone Number:                   (408) 738-8881

         C. Landlord's Address for Notices: Renco Investment Company
                                            1285 Oakmead Parkway
                                            Sunnyvale, CA 94086

         D. Landlord's Representative:      William N. Neidig
            Phone Number:                   (408) 730-5500

         E. Intended Commencement Date:     Eighteen (18) months
                                            following the actual lease
                                            commencement date for the
                                            building identified as
                                            Renco 54

         F.  Intended Term:                 Thirteen (13) years and Six
                                            (6) months

         G. Lease Expiration Date:          Thirteen (13) years and Six
                                            (6) months from the Actual
                                            Commencement Date

         H. Tenant's Punchlist Period:      15 days

         I.  First Month's Prepaid Rent:    $102,000.00 which amount
                                            shall be paid to Landlord
                                            when Landlord submits

                                       17

<PAGE>

                                            construction drawings to the
                                            City of Fremont for the
                                            Building shell.

         J.  Last Month's Prepaid Rent:     -0-


         K. Tenant's Security Deposit:      $102,000.00 which amount
                                            shall be paid to Landlord
                                            when Landlord submits
                                            construction drawings to the
                                            City of Fremont for the
                                            Building shell.

         L.  Late Charge Amount:            5% of delinquent amount

         M.  Tenant's Required Liability    $3,000,000 combined single
                 Coverage:                  limit

         N. Brokers:                        CB/Madison

         O.  Property or Project:  That certain real  property,  situated in the
City of Fremont,  County of Alameda, State of California,  as presently improved
with one building, which real property is shown on the Site Plan attached hereto
as Exhibit "A" and is commonly known as or otherwise described as follows:

                                            Renco 48
                                            Parcel Map 6925, Parcel 2 recorded
                                            in the official records of Alameda
                                            County, California

         P. Building: That certain Building to be constructed by Landlord within
the Property in which the Leased  Premises are located,  which Building is shown
outlined in red on Exhibit "A" hereto.

         Q. Outside Areas:  The "Outside  Areas" shall mean all areas within the
Property which are located outside the buildings,  such as pedestrian  walkways,
parking areas, landscaped areas, open areas and enclosed trash disposal areas.

         R. Leased  Premises:  All the space which is the  Building  which is to
consist of  approximately  85,000 square feet of rentable area and, for purposes
of this Lease, agreed to contain said number of square feet. The Leased Premises
are commonly known as or otherwise described as follows:

                                            Renco 48
                                            Parcel Map 6925, Parcel 2 recorded
                                            in the official records of Alameda
                                            County, California

         S. Base  Monthly  Rent:  The term "Base  Monthly  Rent"  shall mean the
following:

                  Sixty  Thousand One Hundred Eighty  Dollars  ($60,180.00)  for
                  each of the first six (6) months of the Lease Term.

                  One  Hundred  Six   Thousand   Two   Hundred   Fifty   Dollars
                  ($106,250.00)  for each of months  seven (7) through  eighteen
                  (18) of the Lease Term.

                  The Base Monthly Rent shall be increased by Four  Thousand Two
                  Hundred  Fifty  Dollars   ($4,250.00)  at  the  start  of  the
                  nineteenth (19th) month of the Lease Term and by an additional
                  Four Thousand Two

                                       18

<PAGE>

                  Hundred Fifty Dollars ($4,250.00) on each and every subsequent
                  anniversary of the Lease Commencement date throughout the Term
                  of the Lease.

         T.  Permitted Use:  The term "Permitted Use" shall mean the following:

                  Manufacture,  warehousing,  repair,  and sales and  service of
                  high  technology  computer  hardware/software  and all related
                  support functions including office,  research, and development
                  as such uses are permitted in Bayside  Technology Park and any
                  other lawful uses with Landlord's consent,  which shall not be
                  unreasonably withheld.

         U. Exhibits:  The term "Exhibits" shall mean the Exhibits to this Lease
which are described as follows:

                  Exhibit "A"- Site Plan  showing the  Property and  delineating
                  the Building in which the Leased Premises are located.

                  Exhibit "B"- [intentionally deleted]

                  Exhibit "C"- Tenant Improvement Agreement

                  Exhibit "D"- Acceptance Agreement

         V. Addenda:  The term "Addenda" shall mean the Addendum (or Addenda) to
this Lease which is (or are) described as follows: First Addendum to Lease.

                                       19

<PAGE>


File No._______________________

INDUSTRIAL SPACE LEASE
(SINGLE TENANT NET)
Renco 53

         THIS LEASE,  dated  February 24, 1997 for reference  purposes  only, is
made by and between RENCO INVESTMENT  COMPANY, a California general  partnership
("Landlord"),  and AVANT! CORPORATION,  a"Delaware corporation ("Tenant"), to be
effective and binding upon the parties as of the date the last of the designated
signatories to this Lease shall have executed this Lease (the "Effective Date of
this Lease").


ARTICLE 1
REFERENCES

         1.1  REFERENCES:  All  references in this Lease (subject to any further
clarifications  contained in this Lease) to the  following  terms shall have the
following meaning or refer to the respective address, person, date, time period,
amount, percentage, calendar year or fiscal year as below set forth:

         A.  Tenant's Address for Notices:  AVANT! Corporation
                                            1208 East Arques Ave
                                            Sunnyvale, CA 94086

         B.  Tenant's Representative:       John Huyett
             Phone Number:                  (408) 738-8881

         C.  Landlord's Address for Notices:Renco Investment Company
                                            1285 Oakmead Parkway
                                            Sunnyvale, CA 94086

         D. Landlord's Representative:      William N. Neidig
            Phone Number:                   (408) 730-5500

         E.  Intended Commencement Date:    The earlier of May 1,
                                            2009 or upon the  actual  expiration
                                            or  termination  of  the  lease  for
                                            Renco 53 with Cirrus Logic

         F.  Intended Term:                 Approximately One (1)
                                            year and four (4) months

         G. Lease Expiration Date:          The Lease shall expire
                                            on the same  date as the  expiration
                                            of the leases for Renco 54 and Renco
                                            55

         H. Tenant's Punchlist Period:      15 days

         I.  First Month's Prepaid Rent:    $0.00

                                       20

<PAGE>

         J.  Last Month's Prepaid Rent:     -0-

         K. Tenant's Security Deposit:      $157,500.00 to be  paid on the Lease
                                            Commencement Date

         L.  Late Charge Amount:            5% of delinquent amount

         M. Tenant's Required Liability     $3,000,000 combined
               Coverage:                    single limit

         N.  Brokers:                       CB/ Madison

         O.  Property or Project:  That certain real  property,  situated in the
City of Fremont,  County of Alameda, State of California,  as presently improved
with one building, which real property is shown on the Site Plan attached hereto
as Exhibit "A" and is commonly known as or otherwise described as follows:

                           Renco 53
                           46875 Bayside Parkway
                           Fremont, California 94538


         P.  Building:  That certain  Building  within the Property in which the
Leased Premises are located,  which Building is shown outlined in red on Exhibit
"A" hereto.

         Q. Outside Areas:  The "Outside  Areas" shall mean all areas within the
Property which are located outside the buildings,  such as pedestrian  walkways,
parking areas, landscaped areas, open areas and enclosed trash disposal areas.

         R. Leased Premises: All the space which is the Building,  consisting of
approximately  90,000  square feet of rentable  area and,  for  purposes of this
Lease,  agreed to contain  said number of square feet.  The Leased  Premises are
commonly known as or otherwise described as follows:

                           Renco 53
                           46875 Bayside Parkway
                           Fremont, California 94538

         S. Base  Monthly  Rent:  The term "Base  Monthly  Rent"  shall mean the
following:

                  In the event the Lease  Commencement  Date is earlier than May
                  1, 2009,  the Base  Monthly  Rent from the Lease  Commencement
                  Date  through  April  30,  2009  shall be the  greater  of the
                  following: (a) the same Base Monthly Rent as Tenant would have
                  been required to pay to Cirrus Logic under  Tenant's  sublease
                  agreement with Cirrus Logic for the Leased  Premises (had such
                  sublease  continued in full force and effect through April 30,
                  2009)  through  April 30,  2009  pursuant to the terms of such
                  sublease  as of the date of this lease  agreement,  or (b) the
                  same  Base  Monthly  Rent as  Cirrus  Logic  would  have  been
                  required  to pay to  Landlord  if the Cirrus  Logic lease with
                  Landlord,  as reference above, had continued in full force and
                  effect through April 30, 2009.

                  One  Hundred   Fifty-seven   Thousand  Five  Hundred   Dollars
                  ($157,500.00) from May 1, 2009 through April 30, 2010.

                  The Base Monthly Rent shall be increased by Four Thousand Five
                  Hundred Dollars  ($4,500.00) per month on May 1, 2010 and each
                  and every May 1 thereafter.

                                       21

<PAGE>

         T.  Permitted Use:  The term "Permitted Use" shall mean the following:

                  Manufacture,  warehousing,  repair,  and sales and  service of
                  high  technology  computer  hardware/software  and all related
                  support functions including office,  research, and development
                  as such uses are permitted in Bayside  Technology Park and any
                  other lawful uses with Landlord's consent,  which shall not be
                  unreasonably withheld.

         U. Exhibits:  The term "Exhibits" shall mean the Exhibits to this Lease
which are described as follows:

                  Exhibit "A"- Site Plan  showing the  Property and  delineating
the Building in which the Leased Premises are located.

                           Exhibit "B"- [intentionally deleted]

                           Exhibit "C"- Tenant Improvement Agreement

                           Exhibit "D"- Acceptance Agreement

         V. Addenda:  The term "Addenda" shall mean the Addendum (or Addenda) to
this Lease which is (or are) described as follows: First Addendum to Lease.

                                       22

<PAGE>

INDUSTRIAL SPACE LEASE
(SINGLE TENANT NET)
Renco 54

         THIS LEASE,  dated  February 24, 1997 for reference  purposes  only, is
made by and between RENCO INVESTMENT  COMPANY, a California general  partnership
("Landlord"),  and AVANT! CORPORATION,  a Delaware corporation ("Tenant"), to be
effective and binding upon the parties as of the date the last of the designated
signatories to this Lease shall have executed this Lease (the "Effective Date of
this Lease").

ARTICLE 1
REFERENCES

         1.1  REFERENCES:  All  references in this Lease (subject to any further
clarifications  contained in this Lease) to the  following  terms shall have the
following meaning or refer to the respective address, person, date, time period,
amount, percentage, calendar year or fiscal year as below set forth:

         A.   Tenant's Address for Notices:          AVANT! Corporation.
                                                     1208 East Arques Avenue
                                                     Sunnyvale, CA 94086

         B.  Tenant's Representative:                John Huyett
             Phone Number:                           (408) 738-8881

         C.  Landlord's Address for                  Renco Investment Company
             Notices:                                1285 Oakmead Parkway
                                                     Sunnyvale, CA 94086

         D. Landlord's Representative:               William N. Neidig
            Phone Number:                            (408) 730-5500

         E. Intended Commencement Date:              October 1, 1997

         F. Intended Term:                           13 years

         G. Lease Expiration Date:                   13 years from the Actual
                                                     Commencement Date

         H. Tenant's Punchlist Period:               15 days

         I.  First Month's Prepaid Rent:             $53,000.00

         J.  Last Month's Prepaid Rent:              -0-

         K. Tenant's Security Deposit:               $53,000.00

         L.  Late Charge Amount:                     5% of delinquent amount

         M. Tenant's Required Liability              $3,000,000 combined
                 Coverage:                           single limit

         N.  Brokers:                                CB/ Madison

                                       23

<PAGE>

         O.  Property or Project:  That certain real  property,  situated in the
City of Fremont, County of Alameda, State of California, to be improved with one
building,  which  real  property  is shown on the Site Plan  attached  hereto as
Exhibit "A" and is commonly known as or otherwise described as follows:

                                            Renco 54
                                            46859 Bayside Parkway
                                            Fremont, California 94538

         P. Building: That certain Building to be constructed by Landlord within
the Property in which the Leased  Premises are located,  which Building is shown
outlined in red on Exhibit "A" hereto.

         Q. Outside Areas:  The "Outside  Areas" shall mean all areas within the
Property which are located outside the buildings,  such as pedestrian  walkways,
parking areas, landscaped areas, open areas and enclosed trash disposal areas.

         R. Leased  Premises:  All the space which is the  Building  which is to
consist of  approximately  53,000 square feet of rentable area and, for purposes
of this Lease, agreed to contain said number of square feet. The Leased Premises
are commonly known as or otherwise described as follows:

                  Renco 54
                  46859 Bayside Parkway
                  Fremont, California 94538

         S. Base  Monthly  Rent:  The term "Base  Monthly  Rent"  shall mean the
following:
                  Fifty Three Thousand  Dollars  ($53,000.00) for months one (1)
                  through four (4) of the Lease Term.

                  Sixty-three  Thousand  Six Hundred  Dollars  ($63,600.00)  for
                  months five (5) through twenty-four (24) of the Lease Term.

                  Sixty-six thousand Two Hundred Fifty Dollars  ($66,250.00) for
                  months  twenty-five (25) through  thirty-six (36) of the Lease
                  Term.

                  The Base  Monthly  Rent shall be increased by Two Thousand Six
                  Hundred  Fifty  Dollars   ($2,650.00)  at  the  start  of  the
                  thirty-seventh  (37th)  month  of  the  Lease  Term  and by an
                  additional Two Thousand Six Hundred Fifty Dollars  ($2,650.00)
                  on  each  and  every  subsequent   anniversary  of  the  Lease
                  Commencement date throughout the Term of the Lease.

         T.  Permitted Use:  The term "Permitted Use" shall mean the following:

                  Manufacture,  warehousing,  repair,  and sales and  service of
                  high  technology  computer  hardware/software  and all related
                  support functions including office,  research, and development
                  as such uses are permitted in Bayside  Technology Park and any
                  other lawful uses with Landlord's consent,  which shall not be
                  unreasonably withheld.

         U. Exhibits:  The term "Exhibits" shall mean the Exhibits to this Lease
which are described as follows:

                  Exhibit "A"- Site Plan  showing the  Property and  delineating
                  the Building in which the Leased Premises are located.

                  Exhibit "B"- [intentionally deleted]

                                       24

<PAGE>

                  Exhibit "C"- Tenant Improvement Agreement

                  Exhibit "D"- Acceptance Agreement

         V. Addenda:  The term "Addenda" shall mean the Addendum (or Addenda) to
this Lease which is (or are) described as follows: First Addendum to Lease.

                                       25

<PAGE>

File No._______________________


INDUSTRIAL SPACE LEASE
(SINGLE TENANT NET)
Renco 55


         THIS LEASE,  dated  February 27, 1997 for reference  purposes  only, is
made by and between RENCO INVESTMENT  COMPANY, a California general  partnership
("Landlord"),  and AVANT!  CORPORATION,  a Delaware corporation ("Tenant"),to be
effective and binding upon the parties as of the date the last of the designated
signatories to this Lease shall have executed this Lease (the "Effective Date of
this Lease").

ARTICLE 1
REFERENCES

         1.1  REFERENCES:  All  references in this Lease (subject to any further
clarifications  contained in this Lease) to the  following  terms shall have the
following meaning or refer to the respective address, person, date, time period,
amount, percentage, calendar year or fiscal year as below set forth:

         A.  Tenant's Address               AVANT! Corporation.
             for Notices:                   1208 East Arques Avenue
                                            Sunnyvale, CA 94086

         B.  Tenant's Representative:       John Huyett
             Phone Number:                  (408) 738-8881

         C.  Landlord's Address             Renco Investment Company
             for Notices:                   1285 Oakmead Parkway
                                            Sunnyvale, CA 94086

         D.  Landlord's Representative:     William N. Neidig
             Phone Number:                  (408) 730-5500

         E.  Intended Commencement Date:    Four (4) Months following
                                            the lease  commencement date for the
                                            building identified as Renco 54

         F.  Intended Term:                 Twelve (12) years and Eight
                                            (8) Months

         G.  Lease Expiration Date:         12 years and eight (8)
                                            months following the actual
                                            lease commencement date for the
                                            building identified as
                                            Renco 54

         H. Tenant's Punchlist Period:      15 days

         I.  First Month's Prepaid Rent:    $63,600.00

         J.  Last Month's Prepaid Rent:     -0-

                                       26

<PAGE>

         K. Tenant's Security Deposit:      $63,600.00

         L.  Late Charge Amount:            5% of delinquent amount

         M. Tenant's Required Liability     $3,000,000 combined
               Coverage:                    single limit

         N.  Brokers:                       CB/ Madison

         O.  Property or Project:  That certain real  property,  situated in the
City of Fremont,  County of Alameda, State of California,  as presently improved
with one building, which real property is shown on the Site Plan attached hereto
as Exhibit "A" and is commonly known as or otherwise described as follows:

                                    Renco 55
                                    46889 Bayside Parkway
                                    Fremont, California 94538

         P. Building: That certain Building to be constructed by Landlord within
the Property in which the Leased  Premises are located,  which Building is shown
outlined in red on Exhibit "A" hereto.

         Q. Outside Areas:  The "Outside  Areas" shall mean all areas within the
Property which are located outside the buildings,  such as pedestrian  walkways,
parking areas, landscaped areas, open areas and enclosed trash disposal areas.

         R. Leased  Premises:  All the space which is the  Building  which is to
consist of  approximately  53,000 square feet of rentable area and, for purposes
of this Lease, agreed to contain said number of square feet. The Leased Premises
are commonly known as or otherwise described as follows:

                                    Renco 55
                                    46889 Bayside Parkway
                                    Fremont, California 94538

         S. Base  Monthly  Rent:  The term "Base  Monthly  Rent"  shall mean the
following:

                  Thirty Two Thousand Four Hundred  Forty  Dollars  ($32,440.00)
                  for each month of the first four (4) months of the Lease Term.

                  Sixty-three  Thousand  Six Hundred  Dollars  ($63,600.00)  for
                  months five (5) through twenty (20) of the Lease Term.

                  Sixty-six thousand Two Hundred Fifty Dollars  ($66,250.00) for
                  months  twenty-one  (21) through  thirty-two (32) of the Lease
                  Term.

                  The Base  Monthly  Rent shall be increased by Two Thousand Six
                  Hundred  Fifty  Dollars   ($2,650.00)  at  the  start  of  the
                  thirty-third  (33rd)  month  of  the  Lease  Term  and  by  an
                  additional Two Thousand Six Hundred Fifty Dollars  ($2,650.00)
                  at the  start of each  subsequent  twelve  (12)  month  period
                  following  the  thirty-third  (33rd)  month of the Lease  Term
                  throughout the Term of the Lease.

         T. Permitted Use: The term "Permitted Use" shall mean the following:

                  Manufacture,  warehousing,  repair,  and sales and  service of
high technology  computer  hardware/software  and all related support  functions
including office, research, and development as such uses are

                                       27

<PAGE>

permitted in Bayside  Technology  Park and any other lawful uses with Landlord's
consent, which shall not be unreasonably withheld.

         U. Exhibits:  The term "Exhibits" shall mean the Exhibits to this Lease
which are described as follows:

                  Exhibit "A"- Site Plan  showing the  Property and  delineating
                  the Building in which the Leased Premises are located.

                  Exhibit "B"- [intentionally deleted]

                  Exhibit "C"- Tenant Improvement Agreement

                  Exhibit "D"- Acceptance Agreement

         V. Addenda:  The term "Addenda" shall mean the Addendum (or Addenda) to
this Lease which is (or are) described as follows: First Addendum to Lease.

                                       28

<PAGE>

ARTICLE 2:
LEASED PREMISES, TERM AND POSSESSION

         2.1 DEMISE OF LEASED  PREMISES:  Landlord  hereby  leases to Tenant and
Tenant  hereby leases from Landlord for Tenant's use in the conduct of Tenant's,
and Tenant's permitted  sublessee's and assignee's business and not for purposes
of speculating in real estate, for the Lease Term and upon the terms and subject
to the  conditions  of this Lease,  that  certain  interior  space  described in
Article I as the Leased  Premises,  reserving  and  excepting  to  Landlord  the
exclusive right One-half of all excess rentals and assignment considerations (as
defined in Section  7.5) to all profits to be derived  from any  assignments  or
sublettings by Tenant during the Lease Term by reason of the appreciation in the
fair market rental value of the Leased  Premises.  Tenant's  lease of the Leased
Premises,  together  with  the  appurtenant  right to use the  Outside  Areas as
described in Article 2.2 below,  shall be conditioned upon and be subject to the
continuing  compliance  by Tenant with (i) all the terms and  conditions of this
Lease,  (ii) all Laws governing the use of the Leased Premises and the Property,
(iii) all Private Restrictions, easements and other matters now of public record
respecting  the use of the  Leased  Premises  and the  Property,  and  (iv)  all
reasonable  written  rules  and  regulations  from time to time  established  by
Landlord.  Notwithstanding  anything to the contrary in Section 2.1 of the Lease
Form,  Tenant's  compliance with Laws concerning  Hazardous  Materials,  whether
governing  the use of the  Leased  Premises  or the  Property  or not,  shall be
governed  solely and  exclusively  by Paragraph 16 of the Addendum  entered into
concurrently herewith.

         2.2 RIGHT TO USE OUTSIDE  AREAS:  As an  appurtenant  right to Tenant's
right to the use and  occupancy  of the Leased  Premises,  Tenant shall have the
right  to use the  Outside  Areas  in  conjunction  with  its use of the  Leased
Premises  solely for the purposes for which they were  designed and intended and
for no other  purposes  whatsoever.  Tenant's  right to so use the Outside Areas
shall be  subject to the  limitations  on such use as set forth in Article 4 and
shall terminate concurrently with any termination of this Lease.

         2.3 LEASE  COMMENCEMENT  DATE AND LEASE  TERM:  The term of this  Lease
shall begin, and the Lease  Commencement  Date shall be deemed to have occurred,
on the Intended  Commencement Date (as set forth in Article 1) unless either (i)
Landlord is unable to deliver possession of the Leased Premises to Tenant on the
Intended  Commencement  Date, in which case the Lease Commencement Date shall be
as  determined  pursuant  to  Article  2.4  below  or (ii)  Tenant  enters  into
possession of the Leased  Premises prior to the Intended  Commencement  Date, in
which  case the Lease  Commencement  Date  shall be as  determined  pursuant  to
Article 2.7 below (the "Lease  Commencement Date") . The term of the Lease shall
end on the Lease  Expiration  Date (as set forth in Article I),  irrespective of
whatever  date the Lease  Commencement  Date is determined to be pursuant to the
foregoing  sentence  (unless the Lease  Expiration Date is expressly  determined
based upon the Lease Commencement  Date). The Lease Term shall be that period of
time  commencing  on the  Lease  Commencement  Date  and  ending  on  the  Lease
Expiration Date (the "Lease Term").

         2.4 DELIVERY OF POSSESSION: Landlord shall deliver to Tenant possession
of the Leased Premises on or before the Intended Commencement Date (as set forth
in  Article  1) in their  presently  existing  condition,  broom  clean,  unless
Landlord  shall have  agreed,  as a condition to Tenant's  obligation  to accept
possession  of the  Leased  Premises  pursuant  to a written  Exhibit or Addenda
attached  to and  made  a part  of  this  Lease,  to  modify  existing  interior
improvements  or  to  make,   construct  and/or  install  additional   specified
improvements  within the  Leased  Premises  or to the  Outside  Areas  and/or to
construct the Leased  Premises,  in which case Landlord  shall deliver to Tenant
possession of the Leased Premises on or before the Intended Commencement Date as
so modified and/or improved.  If Landlord is unable to so deliver  possession of
the Leased Premises to Tenant in the agreed  condition on or before the Intended
Commencement Date, for whatever reason other than Landlord's failure to commence
construction  or  diligently  pursue it to completion to the extent it is within
Landlord's  reasonable  control to do so, Landlord shall not be in default under
this Lease, nor shall this Lease be void, voidable or cancelable by Tenant until
the lapse of one hundred twenty days after the Intended  Commencement  Date (the
"delivery  grace period");  however,  the Lease  Commencement  Date shall not be
deemed to have  occurred  until such date as Landlord  notifies  Tenant that the
Leased  Premises  are in the  agreed  condition  and are  Ready  for  Occupancy.
Additionally,  the  delivery  grace period above set forth shall be extended for
such number of days as Landlord may be delayed in making the agreed improvements
and/or delivering possession of the Leased Premises to Tenant by reason of Force
Majeure or the actions of Tenant. If Landlord is unable to deliver possession of
the Leased  Premises in the agreed  condition to Tenant (a) within the described
delivery  grace  period  (including  any  extensions  thereof by reason of Force
Majeure or the actions of Tenant) or (b) within twelve (12) months from the

                                       29

<PAGE>

Intended  Commencement  Date,  then  Tenant's sole remedy shall be to cancel and
terminate  this Lease by providing  Landlord  written notice of such election to
terminate within fifteen (15) days of such event, and in no event shall Landlord
be liable in damages to Tenant for such delay.  Tenant may not cancel this Lease
at any time after the date  Landlord  notifies  Tenant that the Leased  Premises
have been put into the  agreed  condition  and are Ready  for  Occupancy  unless
Landlord's notice is not given in good faith.

         2.5 ACCEPTANCE OF POSSESSION: On the date Tenant commences occupancy of
the Premises Tenant  acknowledges  that it has inspected the Leased Premises and
is  willing  to  accept  them in  their  existing  condition  (excepting  latent
defects),  broom clean,  unless  Landlord  shall have agreed,  as a condition to
Tenant's  obligation to accept  possession of the Leased Premises  pursuant to a
written  Exhibit or Addenda  attached to and made a part of the Lease, to modify
existing  interior  improvements or to make,  construct and/or install specified
improvements within the Leased Premises and/or to construct the Leased Premises,
in which case Tenant  agrees to accept  possession  of the Leased  Premises when
Landlord has substantially  completed such modifications or improvements and the
Leased  Premises  are Ready for  Occupancy.  If Landlord  shall have so modified
existing improvements or constructed  additional  improvements within the Leased
Premises  for Tenant  and/or to construct  the Leased  Premises,  Tenant  shall,
within  Tenant's  Punchlist  Period  (as set  forth in  Article  I) which  shall
commence on the date that Landlord notifies Tenant that the agreed  improvements
have been completed and the Leased  Premises are Ready for Occupancy,  submit to
Landlord a signed copy of the Acceptance  Agreement  attached  hereto as Exhibit
"D" together with a punchlist of all incomplete  and/or  improper work performed
by Landlord.  Upon the expiration of Tenant's Punchlist Period,  Tenant shall be
conclusively  deemed to have accepted the Leased Premises in their then-existing
condition as so delivered by Landlord to Tenant, except as to latent defects and
those items reasonably set forth in the punchlist submitted to Landlord prior to
the expiration of said period.  Landlord agrees to correct all items  reasonably
set forth in Tenant's  punchlist,  provided that such punchlist was submitted to
Landlord  within Tenant's  Punchlist  Period.  Additionally,  Landlord agrees to
place in good working order all plumbing, lighting, heating, ventilating and air
conditioning  systems  within the Leased  Premises and all man doors and roll-up
truck doors serving the Leased  Premises to the extent that such systems  and/or
items  are not in good  operating  condition.  Notwithstanding  anything  to the
contrary  in  Section  2.5  of  the  Lease  Form,  Landlord  warrants  that  the
construction  of the  Building,  Outside Areas and Tenant  Improvements  will be
performed substantially in accordance with the Construction Drawings (as defined
in  Exhibit  C) in a good  and  workmanlike  manner,  free  of  defects  and the
Building,  Outside Areas,  and Leased  Premises shall be in compliance  with all
laws,  codes,  ordinances,  rules and  regulations,  and that all  materials and
equipment furnished will substantially  conform to said drawings and will be new
and  otherwise of good  quality.  This  warranty does not extend to, and neither
Landlord nor Landlord's  general  contractor  shall be liable for, any defect in
construction  or  equipment  which is  discovered  more than one year  after the
recordation  of a notice of completion  for the Building.  Tenant shall promptly
notify Landlord in writing of any defect in  construction  or equipment  covered
within such one-year period, and promptly thereafter Landlord shall commence the
cure of each such defect and complete  such cure with  diligence  at  Landlord's
cost and expense, not to be passed through to Tenant.

         With  respect  to  defects  discovered  after  the  expiration  of such
one-year  period,  Landlord and Tenant  acknowledge that they intend that Tenant
shall have the  benefit of any  express or  implied  construction  or  equipment
warranties  existing in favor of Landlord  and against all third  parties  which
would  assist  Tenant  in  correcting   such  defects  and  in  discharging  its
obligations  regarding  the  repair  and  maintenance  of the  Leased  Premises.
Following the expiration of such one-year  period,  Landlord shall inform Tenant
of all  written  construction  and  equipment  warranties  existing  in favor of
Landlord which affect the Building or equipment.  Landlord shall  cooperate with
Tenant  in  enforcing  such  warranties  and in  bringing  any suit  that may be
necessary to enforce  liability  with regard to any  defective  construction  or
equipment  which is discovered or of which  Landlord  receives  notice after the
expiration of said one-year  warranty  period,  so long as Tenant pays all costs
reasonably incurred by Landlord in connection  therewith.  This warranty applies
only to  construction  performed  by Landlord  for Tenant after the date of this
Lease.

         2.6 SURRENDER OF  POSSESSION:  Immediately  prior to the  expiration or
upon the sooner  termination of this Lease,  Tenant shall remove all of Tenant's
signs  from the  exterior  of the  Building  and shall  remove  all of  Tenant's
equipment,  trade  fixtures,  furniture,  supplies,  wall  decorations and other
personal  property  from the Leased  Premises  ("Tenants  Property"),  and shall
vacate and  surrender  the Leased  Premises to  Landlord  in the same  condition
(except for reasonable wear and tear, acts of god or alterations  which Landlord
had stated in writing may remain upon expiration or earlier  termination of this
Lease), broom clean, as existed at the Lease Commencement Date.

                                       30

<PAGE>

Tenant shall repair all damage to the Leased Premises caused by Tenant's removal
of Tenant's  property and all damage to the  exterior of the Building  caused by
Tenant's  removal  of  Tenant's  signs.  Tenant  shall  patch and  refinish,  to
Landlord's  reasonable  satisfaction,  all  penetrations  made by  Tenant or its
employees to the floor,  walls or ceiling of the Leased  Premises,  whether such
penetrations  were made with Landlord's  approval or not. Tenant shall repair or
replace all stained or damaged  ceiling tiles and wall  coverings and replace as
may be required  floor  coverings to the  reasonable  satisfaction  of Landlord.
Subject to paragraph 13.12 B Tenant shall pay the cost of restoring or replacing
all trees,  shrubs,  plants,  lawn and ground  cover,  and repair (or replace as
required)  all  paved  surfaces  of the  Property,  and  otherwise  satisfy  all
requirements  to repair any  damage or  excessive  wear to the Leased  Premises,
Building,  Outside Areas, and/or Property. Tenant shall repair all damage caused
by Tenant to the exterior  surface of the Building and the paved surfaces of the
outside areas  adjoining the Leased  Premises and, where  necessary,  replace or
resurface same.  Additionally,  Tenant shall,  prior to the expiration or sooner
termination of this Lease,  remove any improvements  constructed or installed by
Tenant which Landlord  requests be so removed by Tenant and Tenant shall restore
the Leased Premises to the condition  existing prior to the installation of such
improvements, ordinary wear and tear and casualty damage for which Tenant is not
responsible  excepted. If the Leased Premises are not surrendered to Landlord in
the condition  required by this Article at the expiration or sooner  termination
of this Lease,  Landlord may, at Tenant's  expense,  so remove  Tenant's  signs,
property  and/or   improvements  not  so  removed  and  make  such  repairs  and
replacements not so made or hire, at Tenant's expense,  independent  contractors
to perform such work.  Tenant shall be liable to Landlord for all costs incurred
by Landlord in returning  the Leased  Premises to the required  condition,  plus
interest on all costs incurred from the date paid by Landlord at the Wells Fargo
Bank Prime Rate Plus Two not to exceed the legal rate allowed by Law until paid,
payable  by Tenant to  Landlord  within ten days  after  receipt of a  statement
therefor  from  Landlord.  Tenant  shall  indemnify  Landlord  against  loss  or
liability resulting from delay by Tenant in so surrendering the Leased Premises,
including,  without limitation,  any claims made by any succeeding tenant or any
losses to Landlord due to lost opportunities to lease to succeeding tenants.

         2.7 EARLY  OCCUPANCY:  So long as such entry does not  interfere in any
way with Landlord's  obligations under Exhibit C ("Landlord Work") nor otherwise
delay the project,  Tenant and its  subcontractors,  vendors and agents may have
reasonable  access to the Leased Premises prior to the Lease  Commencement  Date
for the sole purpose of the installation of Tenant's Property and inspecting and
monitoring Landlord's Work and not for the operation of Tenant's business. Prior
to any such entry Tenant must comply with all insurance provisions of this Lease
Agreement as if the Lease  Commencement  Date had occurred.  In addition  Tenant
agrees to defend,  indemnify and hold Landlord harmless from and against any and
all claims and  liabilities  (including,  but not  limited  to,  attorney  fees)
relating,  in any way, to such entry.  If Tenant  enters into  possession of the
Leased  Premises  prior to the Intended  Commencement  Date for any reason other
than that set forth in this paragraph above,  unless otherwise agreed in writing
by Landlord,  the Lease  Commencement  Date shall be deemed to have  occurred on
such sooner date,  and Tenant shall be obligated to perform all its  obligations
under this Lease, including the obligation to pay rent, from that sooner date.

ARTICLE 3:
RENT, LATE CHARGES AND SECURITY DEPOSITS

         3.1 BASE MONTHLY RENT:  Commencing on the Lease  Commencement  Date (as
determined  pursuant to Article 2.3 above) and  continuing  throughout the Lease
Term, Tenant shall pay to Landlord, without prior demand therefor, in advance on
the first day of each calendar month, as base monthly rent, the amount set forth
as "Base Monthly Rent" in Article 1 (the "Base Monthly Rent").

         3.2  ADDITIONAL  RENT:  Commencing on the Lease  Commencement  Date (as
determined  pursuant to Article 2.3 above) and  continuing  throughout the Lease
Term,  in addition to the Base  Monthly  Rent,  Tenant  shall pay to Landlord as
additional rent (the "Additional Rent") the following amounts:

                  A. An amount  equal to all  Property  Operating  Expenses  (as
defined in Article 13) incurred by Landlord.  Payment shall be made by whichever
of the following  methods (or combination of methods) is (are) from time to time
designated by Landlord:

                           (1) Landlord may bill to Tenant,  on a periodic basis
not more  frequently  than  monthly,  the amount of such  expenses  (or group of
expenses) as paid or incurred by Landlord, and Tenant shall pay to Landlord

                                       31

<PAGE>

the amount of such expenses by the 12th day of each calendar month provided such
bill is  received  by  Tenant  after the 20th day of the  immediately  preceding
calendar month,  but on or before the 5th day of such calendar month; and by the
27th day of each calendar  month  provided such bill is received by Tenant after
the 5th day of such  calendar  month,  but on or  before  the  20th  day of such
calendar month; and/or

                           (2)  Landlord   may  deliver  to  Tenant   Landlord's
reasonable estimate of any given expense (such as Landlord's  Insurance Costs or
Real Property Taxes), or group of expenses, which it anticipates will be paid or
incurred for the ensuing calendar or fiscal year, as Landlord may determine, and
Tenant  shall pay to Landlord an amount  equal to the  estimated  amount of such
expenses for such year in equal monthly,  installments during such year with the
installments of Base Monthly Rent.

                           (3)  Landlord  reserves the right to change from time
to time the methods of billing Tenant for any given expense or group of expenses
or the periodic  basis (but in no event more  frequently  than monthly) on which
such expenses are billed.

                  B. Landlord's  share of the  consideration  received by Tenant
upon certain assignments and sublettings as required by Article 7;

                  C. Any legal fees and costs that Tenant is obligated to pay or
reimburse to Landlord pursuant to Article 13; and

                  D. Any other  charges  or  reimbursements  due  Landlord  from
Tenant  pursuant to the terms of this Lease other than late charges and interest
on defaulted rent.  Notwithstanding anything to the contrary in this Section 3.2
of the Lease Form,  and  provided  while  Tenant's  net worth  (using  generally
accepted accounting  principles) is $60,000,000.00 or greater,  Tenant shall pay
Real  Property  Taxes (as defined in Article 13 of the Lease Form) no later than
ten (10) days before Real Property Taxes become  delinquent and Tenant shall not
be required to pay Real Property Taxes prior to such date. In the event Tenant's
aforesaid net worth is less than $60,000,000.00,  Landlord may require Tenant to
pay Real Property  Taxes  pursuant to the  provisions  of Paragraph  3.2A above.
Tenant shall pay its prorata share of any Real Property Taxes due as a result of
the  recordation  of a  tract  or  parcel  map  required  as  a  result  of  the
construction and/or financing of the Building, and such payment shall be due and
payable at the time of recording the map.

         3.3 YEAR-END ADJUSTMENTS: If Landlord shall have elected to bill Tenant
for the  Property  Operating  Expenses  (or any  group of such  expenses)  on an
estimated  basis in accordance  with the  provisions of Article  3.2A(2)  above,
Landlord  shall  furnish to Tenant  within six months  following  the end of the
applicable  calendar or fiscal  year,  as the case may be, a  statement  setting
forth (i) the amount of such  expenses  paid or  incurred  during the just ended
calendar or fiscal  year,  as  appropriate,  and (ii) the amount that Tenant has
paid to Landlord  for credit  against such  expenses for such period.  If Tenant
shall  have paid more  than its  obligation  for such  expenses  for the  stated
period,  Landlord shall,  at its election,  either (i) credit the amount of such
overpayment  toward the next ensuing payment or payments of Additional Rent that
would  otherwise  be due or (ii)  refund  in cash to Tenant  the  amount of such
overpayment within thirty (30) days of the date of such  determination.  If such
year-end  statement  shall show that Tenant did not pay its  obligation for such
expenses  in  full,  then  Tenant  shall  pay to  Landlord  the  amount  of such
underpayment  within thirty (30) days from Landlord's billing of same to Tenant.
The   provisions  of  this  Article  shall  survive  the  expiration  or  sooner
termination of this Lease.  Notwithstanding  anything to the contrary in Section
3.3 of the Lease Form:

         1. Not more than once per year,  Tenant  shall have the  right,  at its
expense,  exercisable upon reasonable prior written notice to Landlord, to audit
Landlord's books and records for Property Operating Expenses provided such audit
is  conducted  during  normal  business  hours and  within  twelve  (12)  months
following the Lease year subject to audit.

         2. Landlord  shall pay the cost of such audit if it is determined  that
Tenant has been  overcharged for Property  Operating  Expenses by more than five
percent (5%) and shall promptly refund the amount of such overpayment to Tenant.

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         3.4 LATE CHARGE AND  INTEREST ON RENT IN DEFAULT:  Tenant  acknowledges
that the late payment by Tenant of any monthly  installment of Base Monthly Rent
or any  Additional  Rent will cause  Landlord to incur certain costs and expense
not  contemplated  under this Lease,  the exact  amounts of which are  extremely
difficult or impractical  to fix. Such costs and expenses will include,  without
limitation,  administration  and collection  costs and processing and accounting
expenses.  Therefore, if any installment of Base Monthly Rent is not received by
Landlord from Tenant within six calendar days after the same becomes due, Tenant
shall immediately pay to Landlord a late charge in an amount equal to the amount
set forth in Article 1 as the "Late Charge  Amount",  and if any Additional Rent
is not  received by Landlord  within six  calendar  days after same becomes due,
Tenant  shall  immediately  pay to Landlord a late charge in an amount  equal to
five percent of the Additional Rent not so paid.  Landlord and Tenant agree that
this late charge represents a reasonable estimate of such costs and expenses and
is fair  compensation to Landlord for the anticipated loss Landlord would suffer
by reason of  Tenant's  failure to make timely  payment.  In no event shall this
provision  for a late  charge be  deemed  to grant to  Tenant a grace  period or
extension of time within to pay any rental  installment or prevent Landlord from
exercising  any right or remedy  available to Landlord upon Tenant's  failure to
pay each rental  installment due under this Lease when due,  including the right
to terminate this Lease.  If any rent remains  delinquent for a period in excess
of ten calendar days, then, in addition to such late charge, Tenant shall pay to
Landlord  interest  on any rent that is not so paid  from said  tenth day at the
then maximum rate of interest not prohibited or made usurious by Law until paid.

                  Late Charge and  Interest on Rent in Default:  Notwithstanding
anything to the contrary in Section 3.4 of the Lease Form:

         A. No late charge for Base Monthly Rent or Additional Rent shall become
due and  payable  until  Tenant has  received  written  notice that a payment of
either Base Monthly Rent or Additional  Rent is  delinquent  and Tenant fails to
pay such  delinquent  amount  within  six (6) days after  receipt of  Landlord's
written  notice,  provided  that,  after  Landlord  provides  Tenant with such a
delinquency notice (as to either Base Monthly Rent or Additional Rent) then, for
the twelve (12) month period from and after such notice,  late charges  shall be
due and payable  after the  applicable  six (6)-day  grace  period  described in
Section  3.4 of the Lease Form  without  the  requirement  that  Landlord  first
deliver a  delinquency  notice to Tenant  (as to  either  Base  Monthly  Rent or
Additional Rent).

         B. Interest on delinquent  rent payments  shall not commence  until six
(6) days after Tenant's  receipt of Landlord's  written notice that rent has not
been paid.

         3.5 PAYMENT OF RENT: Except as specifically  provided otherwise in this
Lease, all rent shall be paid in lawful money of the United States,  without any
abatement,  reduction or offset for any reason  whatsoever,  to Landlord at such
address as Landlord may designate from time to time.  Tenant's obligation to pay
Base Monthly Rent and all Additional Rent shall be appropriately prorated at the
commencement  and expiration of the Lease Term. The failure by Tenant to pay any
Additional Rent as required pursuant to this Lease when due shall be treated the
same as a failure  by Tenant to pay Base  Monthly  Rent when due,  and  Landlord
shall have the same rights and remedies against Tenant as Landlord would have if
Tenant failed to pay the Base Monthly Rent when due.

         3.6 PREPAID RENT:  Tenant shall pay to Landlord the amount set forth in
Article I as "First  Month's  Prepaid  Rent" as  prepayment  of rent for  credit
against the first installment(s) of Base Monthly Rent due hereunder.

         3.7 SECURITY DEPOSIT: Tenant shall deposit with Landlord the amount set
forth in Article 1 as the "Security  Deposit" as security for the performance by
Tenant  of the  terms  of this  Lease  to be  performed  by  Tenant,  and not as
prepayment of rent.  Landlord may apply such portion or portions of the Security
Deposit as are reasonably  necessary for the following  purposes:  (i) to remedy
any default by Tenant in the payment of Base Monthly Rent or Additional  Rent or
a late charge or interest on defaulted rent; (ii) to repair damage to the Leased
Premises, the Building or the Outside Areas caused by Tenant; (iii) to clean and
repair the Leased  Premises,  the Building or the Outside Areas  following their
surrender to Landlord if not surrendered in the condition  required  pursuant to
the  provisions  of Article 2; and (iv) to remedy any other default of Tenant to
the extent  permitted by Law including,  without  limitation,  paying in full on
Tenant's  behalf any sums claimed by  materialmen or contractors of Tenant to be
owing to them by Tenant for work done or improvements  made at Tenant's  request
to the Leased Premises. In this regard, Tenant hereby waives any

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<PAGE>

restriction  on the  uses to  which  the  Security  Deposit  may be  applied  as
contained in Section 1950.7(c) of the California Civil Code and/or any successor
statute.  In the event the Security  Deposit or any portion  thereof is so used,
Tenant shall pay to Landlord, promptly upon demand, an amount in cash sufficient
to restore the  Security  Deposit to the full  original  sum. If Tenant fails to
promptly  restore the Security Deposit and if Tenant shall have paid to Landlord
any sums as "Last Month's Prepaid Rent",  Landlord may, in addition to any other
remedy  Landlord may have under this Lease,  reduce the amount of Tenant's  Last
Month's  Prepaid  Rent by  transferring  all or  portions  of such Last  Month's
Prepaid  Rent to  Tenant's  Security  Deposit  until  such  Security  Deposit is
restored  to the amount set forth in Article 1.  Landlord  shall not be deemed a
trustee  of the  Security  Deposit.  Landlord  may use the  Security  Deposit in
Landlord's  ordinary business and shall not be required to segregate it from its
general  accounts.  Tenant shall not be entitled to any interest on the Security
Deposit.  If Landlord  transfers  the Building or the Property  during the Lease
Term,  Landlord  may  pay  the  Security  Deposit  to any  subsequent  owner  in
conformity  with the provisions of Section  1950.7 of the California  Civil Code
and/or any successor statute, in which event the transferring  landlord shall be
released  from all  liability  for the return of the  Security  Deposit.  Tenant
specifically  grants to Landlord  (and Tenant  hereby  waives the  provisions of
California  Civil Code  Section  1950.7 to the  contrary) a period of sixty days
following a surrender of the Leased  Premises by Tenant to Landlord within which
to return the Security Deposit (less permitted  deductions) to Tenant,  it being
agreed  between  Landlord and Tenant that sixty days is a  reasonable  period of
time within which to inspect the Leased Premises, make required repairs, receive
and verify  workmen's  billings  therefor,  and prepare a final  accounting with
respect to such deposit.  In no event shall the Security Deposit, or any portion
thereof, be considered prepaid rent.

ARTICLE 4:
USE OF LEASED PREMISES AND OUTSIDE AREAS

         4.1 PERMITTED USE:  Tenant shall be entitled to use the Leased Premises
solely  for the  "Permitted  Use" as set  forth  in  Article  1 and for no other
purpose whatsoever.  Tenant shall continuously and without  interruption use the
Leased  Premises for such purpose for the entire Lease Term. Any  discontinuance
of such use for a period  of  thirty  consecutive  calendar  days  shall  be, at
Landlord's  election, a default by, Tenant under the terms of this Lease. Tenant
shall have the right to use the Outside Areas in conjunction  with its Permitted
Use of the Leased  Premises solely for the purposes for which they were designed
and intended and for no other purposes whatsoever.  Notwithstanding  anything to
the contrary in this Section 4.1,  Tenant shall not be required to  continuously
and  without  interruption  occupy or use the  Leased  Premises,  and Tenant may
vacate the Leased  Premises  so long as it  continues  to comply  with all other
provisions of this Lease Agreement,  provides notice to Landlord of its intended
vacation and safeguards the Leased Premises in a manner reasonably  satisfactory
to Landlord and  Landlord's  insurance  carrier,  in which event such failure to
occupy or vacate shall not be a default hereunder.

         4.2 GENERAL  LIMITATIONS ON USE: Tenant shall not do or permit anything
to be done in or about the Leased Premises,  the Building,  the Outside Areas or
the Property which does or could (i) jeopardize the structural  integrity of the
Building or (ii) cause damage to any part of the Leased Premises,  the Building,
the Outside Areas or the Property. Tenant shall not operate any equipment within
the Leased Premises which does or could (i) injure,  vibrate or shake the Leased
Premises  or the  Building,  (ii)  damage,  overload,  or impair  the  efficient
operation  of any  electrical,  plumbing,  sewer,  heating,  ventilating  or air
conditioning  systems within or servicing the Leased Premises or the Building or
(iii) damage or impair the efficient  operation of the sprinkler system (if any)
within or  servicing  the Leased  Premises  or the  Building.  Tenant  shall not
install any  equipment or antennas on or make any  penetrations  of the exterior
walls or roof of the Building  nor shall  Tenant affix any  equipment to or make
any  penetrations or cuts in the floor,  ceiling or walls of the Leased Premises
absent Landlord's  consent not to be unreasonably  withheld.  Landlord's consent
may be  conditioned  upon,  without  limitation,  (a) assurance  (including  the
posting  of bonds or  additional  security  deposits)  that such work  shall not
damage nor  create the risk of damage to the  Property  or  Building  and/or (b)
Landlord approving, in Landlord's sole discretion, Tenant's contractor who shall
perform such work with such contractor  guaranteeing  (in favor of Landlord) the
proper  performance  of such  work.  Tenant  shall not place any loads  upon the
floors,  walls,  ceiling or roof systems  which could  endanger  the  structural
integrity  of the  Building  or damage its  floors,  foundations  or  supporting
structural  components.  Tenant  shall  not place any  explosive,  flammable  or
harmful  fluids or other waste  materials in the drainage  systems of the Leased
Premises,  the Building,  the Outside  Areas or the  Property.  Tenant shall not
drain or discharge any fluids in the landscaped  areas or across the paved areas
of the  Property.  Tenant shall not use any of the Outside Areas for the storage
of its  materials,  supplies,  inventory or equipment,  and all such  materials,
supplies,  inventory or equipment shall at all times be stored within the Leased
Premises. Tenant shall not

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<PAGE>

commit nor permit to be committed any waste in or about the Leased Premises, the
Building,  the Outside Areas or the Property.  Without limiting  anything to the
contrary in this Section 4.2 and regardless of anything set forth in Section 6.1
of the Lease Form expressly to the contrary:

A. Tenant shall have the right to make interior  alterations  which cost, in the
aggregate,  less that $25,000 per Lease year and $200,000.00 cumulative over the
Lease Term and any extensions,  if exercised,  without  Landlord's prior consent
provided  that  such  alterations  do not  affect  the  structural  parts of the
Building  or involve  the  demolition  of  Landlord's  property.  Tenant  shall,
however,  deliver  to  Landlord a copy of any plans and  specifications  for any
leasehold improvement made by Tenant to the Leased Premises.

B.  Tenant  shall  have  the  right  to  make   modifications,   alterations  or
improvements  to the Outside Areas,  the exterior of the Building and structural
components of the Building only with  Landlord's  prior written  consent,  which
shall not be unreasonably withheld.

         4.3 NOISE AND  EMISSIONS:  All noise  generated by Tenant in its use of
the Leased  Premises  shall be confined or muffled so that it does not interfere
with  the  businesses  of or  annoy  the  occupants  and/or  users  of  adjacent
properties. All dust, fumes, odors and other emissions generated by Tenant's use
of the Leased Premises shall be sufficiently dissipated in accordance with sound
environmental  practices and exhausted from the Leased Premises in such a manner
so as not to interfere  with the  businesses  of or annoy the  occupants  and/or
users of adjacent  properties,  or cause any damage to the Leased Premises,  the
Building, the Outside Areas or the Property or any component part thereof or the
property of adjacent property owners.

         4.4 TRASH DISPOSAL:  Tenant shall provide trash bins (or other adequate
garbage  disposal  facilities)  within the trash  enclosure  areas  provided  or
permitted by Landlord  outside the Leased  Premises  sufficient  for the interim
disposal  of all of its trash,  garbage and waste.  All such trash,  garbage and
waste temporarily  stored in such areas shall be stored in such a manner so that
it is not visible from outside of such areas, and Tenant shall cause such trash,
garbage and waste to be regularly  removed  from the  Property at Tenant's  sole
cost.  Tenant shall at all times keep the Leased  Premises,  the  Building,  the
Outside  Areas and the  Property in a clean,  safe and neat  condition  free and
clear  of all  trash,  garbage,  waste  and/or  boxes,  pallets  and  containers
containing same at all times.

         4.5 PARKING: Tenant shall not, at any time, park or permit to be parked
any  recreational  vehicles,  inoperative  vehicles or  equipment in the Outside
Areas or on any portion of the Property.  Tenant agrees to assume responsibility
for  compliance  by its  employees  and  invitees  with the  parking  provisions
contained  herein.  If Tenant  or its  employees  park any  vehicle  within  the
Property in violation of these provisions, then Landlord may, in addition to any
other remedies Landlord may have under this Lease,  charge Tenant, as Additional
Rent,  and Tenant agrees to pay, as Additional  Rent,  Fifty Dollars per day for
each day or partial day that each such vehicle is so parked within the Property.

         4.6 SIGNS:  Other than one business  identification  sign (which may be
illuminated  if allowed by City and/or  other  applicable  ordinances)  which is
first  approved by Landlord in accordance  with this  Article,  Tenant shall not
place or install on or within any portion of the Leased  Premises,  the exterior
of the  Building,  the Outside  Areas or the Property  any sign,  advertisement,
banner,  placard,  or picture  which is visible  from the exterior of the Leased
Premises.  Tenant  shall not place or install  on or within  any  portion of the
Leased Premises, the exterior of the Building, the Outside Areas or the Property
any  business  identification  sign which is visible  from the  exterior  of the
Leased  Premises  until  Landlord  shall have  first  approved  in  writing  the
location, size, content, design, method of attachment and material to be used in
the making of such sign. Any sign, once approved by Landlord, shall be installed
only in strict compliance with Landlord's approval, at Tenant's expense, using a
person first approved by Landlord to install same. Landlord may remove any signs
(which  have not been first  approved in writing by  Landlord),  advertisements,
banners,  placards  or  pictures  so placed by  Tenant on or within  the  Leased
Premises,  the exterior of the  Building,  the Outside Areas or the Property and
charge to Tenant the cost of such removal,  together with any costs  incurred by
Landlord to repair any damage  caused  thereby,  including  any cost incurred to
restore  the  surface  upon  which  such  sign was so  affixed  to its  original
condition.  Tenant shall remove all of Tenant's signs,  repair any damage caused
thereby, and restore the surface upon which the sign was affixed to its original
condition,  all to Landlord's reasonable  satisfaction,  upon the termination of
this Lease.  Landlord's  approval of Tenant's business name signage shall not be
unreasonably withheld.

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<PAGE>

         4.7 COMPLIANCE WITH LAWS AND PRIVATE  RESTRICTIONS:  Tenant shall abide
by and shall promptly observe and comply with, at its sole cost and expense, all
Laws (now or hereafter in effect) and Private  Restrictions  of record as of the
date of this Lease or  amendments  to Private  Restrictions  approved  by Tenant
respecting  the use and  occupancy of the Leased  Premises,  the  Building,  the
Outside Areas or the Property including,  without limitation, all Laws governing
the use and/or disposal of hazardous materials,  and shall defend with competent
counsel,  indemnify  and hold  Landlord  harmless  from any  claims,  damages or
liability  resulting from Tenant's failure to do so. The indemnity  provision of
this Article shall survive the  expiration or sooner  termination of this Lease,
with  respect to any  activities  of Tenant  occurring  on or about the Property
while Tenant was in possession of the Leased Premises.  Notwithstanding anything
to the contrary in Section 4.7 of the Lease Form:

A.  Landlord,  at its  sole  cost  and  expense,  shall  remain  liable  for the
correction of any violations of Law or Private  Restrictions for Landlord's Work
which existed as of the Lease Commencement Date.

B. Tenant's  compliance with Laws governing the use and/or disposal of hazardous
materials and Tenant's  obligation to defend  Landlord with  competent  counsel,
indemnify and hold Landlord  harmless  from any claims,  damages or  liabilities
resulting  from  Tenant's  failure  to  do  so  shall  be  governed  solely  and
exclusively  pursuant to Paragraph  16 of the  Addendum to this Lease  Agreement
executed concurrently herewith.

         4.8  COMPLIANCE  WITH  INSURANCE  REQUIREMENTS:  With  respect  to  any
insurance policies required or permitted to be carried by Landlord in accordance
with the provisions of this Lease, Tenant shall not conduct (or permit any other
person to conduct)  any  activities  nor keep,  store or use (or allow any other
person to keep, store or use) any item or thing within the Leased Premises,  the
Building,  the Outside Areas or the Property  which (i) is prohibited  under the
terms of any of such  policies,  (ii)  could  result in the  termination  of the
coverage afforded under any of such policies,  (iii) could give to the insurance
carrier  the  right to  cancel  any of such  policies,  or (iv)  could  cause an
increase in the rates (over standard  rates)  charged for the coverage  afforded
under any of such  policies.  Tenant shall comply with all  requirements  of any
insurance company,  insurance  underwriter,  or Board of Fire Underwriters which
are necessary to maintain, at standard rates, the insurance coverages carried by
either  Landlord or Tenant pursuant to this Lease.  Notwithstanding  anything to
the  contrary in Section 4.8 of the Lease Form,  Tenant  shall be  permitted  to
conduct any activities or keep, store or use any item or thing within the Leased
Premises,  the Building,  the Outside Areas or the Property  which is reasonably
necessary  to  Tenant's  business  even if it  causes an  increase  in the rates
charged for coverage afforded under any insurance policies required or permitted
to be carried by  Landlord,  so long as Tenant is willing to pay any increase in
insurance rates so caused, and such activities do not constitute an unreasonable
danger to the  Leased  Premises  or any part  thereof  or  otherwise  materially
interfere with  Landlord's  ability to obtain  insurance for the Leased Premises
and Landlord's  other  buildings.  If Tenant's  activities  cause an increase in
insurance  rates for  Landlord's  other  buildings,  Tenant shall pay the entire
amount of such increase to the extent caused solely by Tenant's activities.

         4.9 LANDLORD'S  RIGHT TO ENTER:  Landlord and its agents shall have the
right to enter the Leased  Premises  during normal  business  hours after giving
Tenant at least twenty four (24) hours notice  except in cases of emergency  and
subject  to  Tenant's  reasonable  security  measures  for  the  purpose  of (i)
inspecting the same; (ii) showing the Leased Premises to prospective  purchasers
or mortgagees of the Leased Premises;  (iii) showing the Premises to prospective
tenants of the Premises  except that the same shall not be allowed access absent
being  accompanied  by a  representative  of Tenant to assure that  confidential
information is not disclosed to such prospective  Tenant;  (iv) making necessary
alterations,  additions  or  repairs;  and/or  (v)  performing  any of  Tenant's
obligations  when Tenant has failed to do so.  Landlord  shall have the right to
enter the Leased Premises during normal business hours (or as otherwise agreed),
subject to Tenant's reasonable security measures,  for purposes of supplying any
maintenance or services  agreed to be supplied by Landlord.  Landlord shall have
the right to enter the Outside Areas during normal  business  hours for purposes
of (i)  inspecting  the  exterior of the Building  and the Outside  Areas,  (ii)
posting  notices of  non-responsibility,  and (iii) supplying any services to be
provided by Landlord.  Any entry into the Leased  Premises or the Outside  Areas
obtained  by  Landlord  in  accordance  with  this  Article  shall not under any
circumstances be construed or deemed to be a forcible or unlawful entry into, or
a detainer of, the Leased Premises, or an eviction,  actual or constructive,  of
Tenant from the Leased Premises or any portion thereof. Notwithstanding anything
to the  contrary  in Section  4.9 of the Lease  Form,  Landlord  shall enter the
Leased  Premises  only in a manner which will not  unreasonably  interfere  with
Tenant's use of the Leased Premises.

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<PAGE>

         4.10 USE OF OUTSIDE  AREAS:  Tenant,  in its use of the Outside  Areas,
shall at all times keep the Outside Areas in a safe  condition free and clear of
all materials,  equipment,  debris, trash (except within existing enclosed trash
areas),  inoperable  vehicles,  and  other  items  which  are  not  specifically
permitted  by  Landlord  to be stored or located  thereon by Tenant.  If, in the
opinion of Landlord,  unauthorized persons are using any of the Outside Areas by
reason of, or under  claim of, the  express or implied  authority  or consent of
Tenant,  then Tenant,  upon demand of Landlord,  shall restrain,  to the fullest
extent then  allowed by Law,  such  unauthorized  use, and shall  initiate  such
appropriate  proceedings  as may be required to so restrain  such use.  Landlord
acknowledges  that so long as  Tenant  has  complied  with all  laws  applicable
thereto, a portion of the Outside Areas may be used by Tenant in connection with
the operation of a day care facility for the children of Tenant's employees.  In
such event, such Area shall be deemed a portion of the Leased Premises hereunder
and not a portion of the Outside  Areas.  Landlord  may  reasonably  approve the
location of Tenant's day care facility.

         4.11     [Intentionally deleted.]

         4.12 ENVIRONMENTAL PROTECTION:  Landlord may voluntarily cooperate in a
reasonable  manner  with the  efforts of all  governmental  agencies in reducing
actual or  potential  environmental  damage.  Tenant  shall not be  entitled  to
terminate  this Lease or to any  reduction  in or abatement of rent by reason of
such  compliance or  cooperation.  Tenant agrees at all times to cooperate fully
with Landlord and to abide by all rules and regulations and  requirements  which
Landlord may reasonably  prescribe in order to comply with the  requirements and
recommendations of governmental  agencies regulating,  or otherwise involved in,
the protection of the environment.  Notwithstanding  anything to the contrary in
Section 4.12 of the Lease Form,  Landlord may voluntarily  cooperate in reducing
actual or potential environmental damage so long as such cooperation is required
by law or does  not  unreasonably  interfere  with  Tenant's  use of the  Leased
Premises or increase Tenant's costs.

         4.13  OUTSIDE  AREAS:  No  materials,   pallets,   supplies,  tanks  or
containers whether above or below ground level, equipment,  finished products or
semifinished  products,  raw materials,  inoperable  vehicles or articles of any
nature  shall be stored  upon or  permitted  to  remain  outside  of the  Leased
Premises  except in fully fenced and screened  areas outside the Building  which
have been  designed  for such  purpose  and have been  approved  in  writing  by
Landlord for such use by Tenant.


ARTICLE 5
REPAIRS, MAINTENANCE, SERVICES AND UTILITIES

         5.1  REPAIR  AND  MAINTENANCE:  Except  in the  case  of  damage  to or
destruction  of the Leased  Premises,  the  Building,  the Outside  Areas or the
Property caused by an Act of God or other peril, in which case the provisions of
Article 10 shall control,  the parties shall have the following  obligations and
responsibilities  with  respect  to the  repair  and  maintenance  of the Leased
Premises,  the Building and the Outside Areas.  Notwithstanding  anything to the
contrary  in Section B of Section  5.1 of the Lease  Form,  with  respect to all
repairs or maintenance  undertaken by Landlord,  the cost of which is a Property
Operating  Expense  which is to be charged  back to Tenant,  Landlord  shall use
reasonable efforts to obtain services and materials at fair market value.

                  A. Tenant's Obligation:  Except for Landlord's  responsibility
under Section 2.5,  Tenant shall,  at all times during the Lease Term and at its
sole cost and expense,  regularly  clean and  continuously  keep and maintain in
good order,  condition  and repair the Leased  Premises  and every part  thereof
including,  without  limiting the generality of the foregoing,  (i) all interior
walls,  floors and ceilings,  (ii) all windows,  doors and skylights,  (iii) all
electrical wiring, conduits,  connectors and fixtures, (iv) all plumbing, pipes,
sinks, toilets,  faucets and drains, (v) all lighting fixtures, bulbs and lamps,
(vi) all heating,  ventilating  and air  conditioning  equipment,  and (vii) all
entranceways to the Leased Premises.  Tenant,  if requested to do so by Landlord
shall hire, at Tenant's sole cost and expense,  a licensed heating,  ventilating
and  air  conditioning  contractor  to  regularly  and  periodically  (not  less
frequently than every three months) inspect and perform required  maintenance on
the heating,  ventilating and air conditioning equipment and systems serving the
Leased  Premises,  or  alternatively,  Landlord  may,  at its  election,  and at
reasonable cost with a reputable  contractor,  contract in its own name for such
regular and periodic inspections of and maintenance on such heating,

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ventilating and air conditioning  equipment and systems and charge to Tenant, as
Additional  Rent, the cost thereof.  Tenant shall, at all times during the Lease
Term,  keep in a clean  and safe  condition  the  Outside  Areas.  Tenant  shall
regularly and  periodically  sweep and clean the  driveways  and parking  areas.
Subject  to  Section  9.2 of this  Lease,  Tenant  shall,  at its sole  cost and
expense,  repair all damage to the Leased  Premises,  the Building,  the Outside
Areas or the  Property  caused  by the  activities  of  Tenant,  its  employees,
invitees or contractors  promptly  following  written notice from Landlord to so
repair such damage. If Tenant shall fail to perform the required  maintenance or
fail to make repairs required of it pursuant to this Article within a reasonable
period of time  following  notice from  Landlord to do so, then Landlord may, at
its election and without  waiving any other remedy it may  otherwise  have under
this Lease or at Law,  perform such  maintenance or make such repairs and charge
to Tenant,  as Additional Rent, the costs so incurred by, Landlord for same. All
glass within or a part of the Leased Premises, both interior and exterior, is at
the sole risk of Tenant and any broken  glass  shall  promptly  be  replaced  by
Tenant at Tenant's expense with glass of the same kind, size and quality.

                  B. Landlord's Obligation:  Landlord shall, at all times during
the Lease Term,  maintain in good  condition  and repair:  (i) the  exterior and
structural  parts  of  the  Building  (including  the  foundation,  subflooring,
load-bearing  and  exterior  walls,  and roof);  and (ii) the  landscaped  areas
located  outside the Building.  The provisions of this  Subarticle B shall in no
way limit the right of Landlord to charge to Tenant, as Additional Rent pursuant
to Article 3 (to the extent  permitted  pursuant to Article 3 or Article 13.12),
the costs incurred by Landlord in performing such maintenance and/or making such
repairs.

         5.2 UTILITIES:  Tenant shall arrange,  at its sole cost and expense and
in its own name, for the supply of gas and  electricity to the Leased  Premises.
In the event that such services are not separately metered, Tenant shall, at its
sole expense,  cause such meters to be installed.  Landlord  shall  maintain the
water meter(s) in its own name;  provided,  however,  that if at any time during
the Lease  Term  Landlord  shall  require  Tenant to put the  water  service  in
Tenant's  name,  Tenant  shall do so at  Tenant's  sole  cost.  Tenant  shall be
responsible for determining if the local supplier of water,  gas and electricity
can supply the needs of Tenant and whether or not the  existing  water,  gas and
electrical  distribution systems within the Building and the Leased Premises are
adequate for Tenant's needs.  Tenant shall be responsible for determining if the
existing  sanitary and storm sewer systems now servicing the Leased Premises and
the Property are adequate for Tenant's  needs.  Tenant shall pay all charges for
water, gas, electricity, and storm and sanitary sewer services as so supplied to
the Leased Premises,  irrespective of whether or not the services are maintained
in Landlord's or Tenant's name.

         5.3 SECURITY:  Tenant acknowledges that Landlord has not undertaken any
duty whatsoever to provide security for the Leased Premises,  the Building,  the
Outside Areas or the Property and, accordingly,  Landlord is not responsible for
the  security  of  same or the  protection  of  Tenant's  property  or  Tenant's
employees,  invitees or contractors.  To the extent Tenant  determines that such
security or protection services are advisable or necessary, Tenant shall arrange
for and pay the costs of providing same.

         5.4 ENERGY AND RESOURCE CONSUMPTION: Landlord may voluntarily cooperate
in a reasonable manner with the efforts of governmental  agencies and/or utility
suppliers in reducing energy or other resource  consumption within the Property.
Tenant shall not be entitled to terminate  this Lease or to any  reduction in or
abatement of rent by reason of such compliance or cooperation.  Tenant agrees at
all times to cooperate fully with Landlord and to abide by all reasonable  rules
established by Landlord (i) in order to maximize the efficient  operation of the
electrical,  heating,  ventilating  and air  conditioning  systems and all other
energy or other resource  consumption systems within the Property and/or (ii) in
order to comply with the requirements and  recommendations  of utility suppliers
and  governmental  agencies  regulating  the  consumption of energy and/or other
resources.  Notwithstanding anything to the contrary in Section 5.4 of the Lease
Form, Landlord shall not reduce energy or other resource consumption in a manner
which  unreasonably  interferes  with Tenant's use of the Leased  Premises,  and
Tenant  shall not be required to  cooperate  in any  reduction  of energy  which
unreasonably  interferes  with Tenant's use of the Leased  Premises or increases
Tenant's costs unless such cooperation is required by law.

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ARTICLE 6:
ALTERATIONS AND IMPROVEMENTS

         6.1  BY  TENANT:   Tenant  shall  not  make  any   alterations   to  or
modifications  of the Leased Premises or construct any  improvements  within the
Leased Premises until Landlord shall have first approved,  in writing, the plans
and specifications  therefor, which approval shall not be unreasonably withheld.
All such modifications,  alterations or improvements, once so approved, shall be
made,  constructed  or installed by Tenant at Tenant's  expense  (including  all
permit  fees  and  governmental  charges  related  thereto),  using  a  licensed
contractor  first  approved by  Landlord,  in  substantial  compliance  with the
Landlord  approved plans and  specifications  therefor.  All work  undertaken by
Tenant shall be done in accordance  with all Laws and in a good and  workmanlike
manner using new materials of good quality. Tenant shall not commence the making
of any  such  modifications  or  alterations  or the  construction  of any  such
improvements  until (i) all required  governmental  approvals  and permits shall
have been obtained,  (ii) all requirements  regarding  insurance imposed by this
Lease have been satisfied,  (iii) Tenant shall have given Landlord at least five
business  days' prior  written  notice of its intention to commence such work so
that  Landlord  may post and file  notices  of  non-responsibility,  and (iv) if
requested by Landlord, Tenant shall have obtained contingent liability and broad
form builder's risk insurance in an amount satisfactory to Landlord to cover any
perils relating to the proposed work not covered by insurance  carried by Tenant
pursuant  to  Article  9. In no  event  shall  Tenant  make  any  modifications,
alterations or  improvements  whatsoever to the Outside Areas or the exterior or
structural components of the Building including, without limitation, any cuts or
penetrations  in the floor,  roof or exterior walls of the Leased  Premises.  As
used in this Article, the term "modifications,  alterations and/or improvements"
shall include,  without  limitation,  the installation of additional  electrical
outlets, overhead lighting fixtures, drains, sinks, partitions, doorways, or the
like.  Notwithstanding anything to the contrary in Section 4.2 or Section 6.1 of
the Lease Form:

A. Tenant shall have the right to make interior  alterations  which cost, in the
aggregate,  less that $25,000 per Lease year and $200,000.00 cumulative over the
Lease Term and any extensions,  if exercised,  without  Landlord's prior consent
provided  that  such  alterations  do not  affect  the  structural  parts of the
Building  or involve  the  demolition  of  Landlord's  property.  Tenant  shall,
however,  deliver  to  Landlord a copy of any plans and  specifications  for any
leasehold improvement made by Tenant to the Leased Premises.

B.  Tenant  shall  have  the  right  to  make   modifications,   alterations  or
improvements  to the Outside Areas,  the exterior of the Building and structural
components of the Building only with  Landlord's  prior written  consent,  which
shall not be unreasonably withheld.

         6.2  OWNERSHIP OF  IMPROVEMENTS:  Tenant may remove its trade  fixtures
constructed  by Tenant at its  expense,  HVAC units  installed  by Tenant at its
expense which are not reasonably necessary for the comfortable use and enjoyment
of the  Premises,  computer  flooring  installed by Tenant at its  expense,  and
demountable   partitions   installed  by  Tenant  at  Tenant's  expense,   after
commencement  of the Lease Term,  so long as it repairs all damage caused by the
installation   and  removal   thereof   and  returns  the  Leased   Premises  to
substantially the condition existing prior to the installation of such Property.
All  modifications,  alterations  or  improvements  made or added to the  Leased
Premises by Tenant (other than Tenant's inventory, equipment, movable furniture,
wall decorations and trade fixtures) shall be deemed real property and a part of
the Leased  Premises,  but shall remain the property of Tenant  during the Lease
Term. Any such modifications, alterations or improvements, once completed, shall
not be altered or removed from the Leased Premises during the Lease Term without
Landlord's  written approval first obtained in accordance with the provisions of
Article 6.1 above.  At the expiration or sooner  termination of this Lease,  all
such modifications, alterations and improvements (other than Tenant's inventory,
equipment,  movable  furniture,  wall  decorations  and trade  fixtures)  if not
removed by Tenant shall automatically  become the property of Landlord and shall
be surrendered to Landlord as a part of the Leased Premises as required pursuant
to  Article  2,  unless  Landlord  shall  require  Tenant to remove  any of such
modifications,  alterations or improvements in accordance with the provisions of
Article 2, in which case Tenant  shall so remove  same.  Landlord  shall have no
obligation to reimburse to Tenant all or any portion of the cost or value of any
such modifications,  alterations or improvements so surrendered to Landlord. All
modifications, alterations or improvements which are installed or constructed on
or attached to the Leased  Premises by Landlord at  Landlord's  expense shall be
deemed real property and a part of the Leased Premises and shall be the property
of Landlord. All lighting,  plumbing,  electrical,  heating, ventilating and air
conditioning fixtures, partitioning,  window coverings, wall coverings and floor
coverings  installed  by  Tenant  shall be  deemed  improvements  to the  Leased
Premises and real

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property  as set forth above and not trade  fixtures of Tenant.  Notwithstanding
anything  to the  contrary in Section  6.2 of the Lease  Form,  with  respect to
Tenant's  Property (as defined in Paragraph  2.6 above),  Landlord  shall,  upon
Tenant's  request,  execute a lien  waiver in a form  reasonably  acceptable  to
Tenant's lender or equipment  lessor,  so long as such waiver does not alter the
terms of the Lease.

         6.3  ALTERATIONS  REQUIRED BY LAW: Tenant shall, at its sole cost, make
all modifications, alterations and improvements to the Leased Premises after the
Lease Commencement Date that are required by any Law because of (i) Tenant's use
or occupancy of the Leased  Premises,  the Building,  the Outside Areas,  or the
Property,  (ii) Tenant's application for any permit or governmental approval, or
(iii) Tenant's  making of any  modifications,  alterations or improvements to or
within the Leased  Premises.  If  Landlord  shall,  at any time during the Lease
Term,  be  required by any  governmental  authority  to make any  modifications,
alterations  or  improvements  to  the  Building  or  the  Project,  the  actual
out-of-pocket   cost   incurred  by  Landlord  in  making  such   modifications,
alterations or improvements,  including  interest at a rate equal to sum of that
rate quoted by Wells Fargo Bank, NT. & SA. from time to time as its "prime" rate
or  "reference"  rate and two percent  (2%) ("Wells  Prime Plus Two"),  shall be
amortized by Landlord over the useful life of such modifications, alterations or
improvements,  as determined in accordance  with generally  accepted  accounting
standards, and the monthly amortized cost of such modifications, alterations and
improvements  as so amortized shall be considered a Property  Maintenance  Cost.
Notwithstanding  anything contained herein to the contrary,  except as caused by
or resulting from the acts or omissions of Tenant or Tenant's architect,  Tenant
shall  not be  responsible  for  correcting  any  Building  code  violations  or
violations  of other laws  existing  at the  Commencement  Date with  respect to
improvements  constructed by Landlord and existing as of the Lease  Commencement
Date but, rather, Landlord shall be responsible for such correction.

         6.4 LIENS:  Tenant  shall keep the Property and every part thereof free
from  any  liens  and  shall  pay  when due all  bills  arising  out of any work
performed,  materials furnished,  or obligations incurred by Tenant, its agents,
employees or contractors relating to the Property.  If any such claim of lien is
recorded  against  Tenant's  interest  in this Lease,  the  Property or any part
thereof, Tenant shall bond against, discharge or otherwise cause such lien to be
entirely released within ten days after receipt of written notice from Landlord.
Tenant's failure to do so shall be conclusively  deemed a material default under
the terms of this Lease.

ARTICLE 7:
ASSIGNMENT AND SUBLETTING BY TENANT

         7.1 BY TENANT:  Tenant  shall not sublet  the Leased  Premises  (or any
portion  thereof) or assign or  encumber  its  interest  in this Lease,  whether
voluntarily or by operation of Law,  without  Landlord's  prior written consent,
which shall not be unreasonably withheld,  first obtained in accordance with the
provisions  of  this  Article  7.  Any  attempted   subletting,   assignment  or
encumbrance  without Landlord's prior written consent,  at Landlord's  election,
shall  constitute  a  default  by  Tenant  under  the  terms of the  Lease.  The
acceptance of rent by Landlord  from any person or entity other than Tenant,  or
the  acceptance of rent by Landlord from Tenant with knowledge of a violation of
the  provisions of this Article,  shall not be deemed to be a waiver by Landlord
of any  provision  of this  Article  or this  Lease  or to be a  consent  to any
subletting by Tenant or any assignment or  encumbrance  of Tenant's  interest in
this Lease. Notwithstanding anything to the contrary in Section 7.1 of the Lease
Form, Landlord shall not unreasonably  withhold its consent to any assignment or
sublease.

         7.2  MERGER  OR  REORGANIZATION:   If  Tenant  is  a  corporation,  any
dissolution,  merger,  consolidation or other  reorganization  of Tenant, or the
sale or other  transfer in the  aggregate  over the Lease Term of a  controlling
percentage  of the  capital  stock  of  Tenant,  shall  be  deemed  a  voluntary
assignment  of  Tenant's  interest  in  this  Lease.  The  phrase   "controlling
percentage"  means the ownership of and the right to vote stock  possessing more
than fifty percent of the total combined voting power of all classes of Tenant's
capital  stock  issued,  outstanding  and  entitled to vote for the  election of
directors.  If  Tenant  is  a  partnership,  a  withdrawal  or  change,  whether
voluntary,  involuntary or by operation of Law, of any general  partner,  or the
dissolution  of the  partnership,  shall be  deemed a  voluntary  assignment  of
Tenant's  interest in this Lease.  Notwithstanding  anything to the  contrary in
Sections 7.1 or 7.5 or this Section 7.2 of the Lease Form:

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<PAGE>

A. If Tenant  is a  publicly  traded  corporation,  or Tenant is not a  publicly
traded  corporation  but the Lease does not represent  substantially  all of the
assets  of  Tenant,  then  Landlord's  consent  shall  not be  required  for any
assignment or sublease (i) made in connection with a merger,  consolidation,  or
other  reorganization  of  Tenant,  (ii)  made  in  connection  with a  sale  of
substantially  all of the assets of Tenant,  or (iii)  involving any corporation
which  controls,  is controlled by, or is under common control with Tenant.  For
the purpose of the Lease if Tenant is a corporation, the sale, or other transfer
of Tenant's capital stock shall not be deemed an assignment,  subletting, or any
other  transfer  of  the  Lease  or the  Leased  Premises.  Notwithstanding  any
provision to the contrary in Article 7 of the Lease Form,  in the case of any of
the  above  described  transfers,  Tenant  shall  not be  obligated  to pay  any
assignment consideration or excess rentals to Landlord.

B. If Tenant or Landlord assigns the Lease as security for a loan,  Landlord and
Tenant agree to execute such documents as are reasonably requested by the lender
and to provide  reasonable  provisions  in the Lease  protecting  such  lender's
security interest which are customarily required by institutional lenders making
loans  secured  by a deed of  trust  or a  leasehold  mortgage,  so long as such
provisions do not alter the benefits of Landlord or Tenant or the obligations of
Tenant or Landlord under the Lease.

         7.3 LANDLORD'S ELECTION:  If Tenant shall desire to assign its interest
under  this Lease or to sublet the Leased  Premises,  Tenant  must first  notify
Landlord,  in writing,  of its intent to so assign or sublet,  at least  fifteen
days in advance of the date it intends to so assign its  interest  in this Lease
or sublet the Leased  Premises  but not sooner than one  hundred  eighty days in
advance of such date, specifying in detail the terms of such proposed assignment
or  subletting,  including the name of the proposed  assignee or sublessee,  the
proposed  assignee's  or  sublessee's  intended  use of the Leased  Premises,  a
current financial  statement of such proposed assignee or sublessee and the form
of documents to be used in effectuating such assignment or subletting.  Landlord
shall have a period of ten business days following receipt of such notice within
which to do one of the following:  (i) consent to such  requested  assignment or
subletting  subject to  Tenant's  compliance  with the  conditions  set forth in
Article 7.4 below or (ii) refuse to so consent to such  requested  assignment or
subletting,  provided that such consent shall not be  unreasonably  refused.  If
Landlord refuses Landlord shall provide Tenant the reasons therefor. During said
ten business day period, Tenant covenants and agrees to supply to Landlord, upon
request,  all necessary or relevant  information  which  Landlord may reasonably
request  respecting such proposed  assignment or subletting  and/or the proposed
assignee or sublessee.

         7.4 CONDITIONS TO LANDLORD'S CONSENT: If Landlord elects to consent, or
shall have been ordered to so consent by a court of competent  jurisdiction,  to
such  requested  assignment,  subletting or  encumbrance,  such consent shall be
expressly  conditioned  upon the occurrence of each of the conditions  below set
forth, and any purported  assignment,  subletting or encumbrance made or ordered
prior to the full and complete  satisfaction of each of the following conditions
shall be void and, at the election of Landlord,  which election may be exercised
at any time following such a purported assignment, subletting or encumbrance but
prior to the satisfaction of each of the stated  conditions,  shall constitute a
material  default by Tenant under this Lease until cured by  satisfying  in full
each such condition by the assignee,  subleases or encumbrances.  The conditions
are as follows:

         A. Landlord  having  approved in form and  substance the  assignment or
sublease agreement (or the encumbrance  agreement),  which approval shall not be
unreasonably  withheld  by Landlord if the  requirements  of this  Article 7 are
otherwise complied with.

         B.  Each  such  subleases  or  assignee   having  agreed,   in  writing
satisfactory  to Landlord  and its counsel and for the benefit of  Landlord,  to
assume,  to be bound by,  and to  perform  the  obligations  of this Lease to be
performed by Tenant which relate to space being subleased (or, in the case of an
encumbrance,  each such encumbrance  having similarly agreed to assume, be bound
by and to perform  Tenant's  obligations  upon a foreclosure or transfer in lieu
thereof).

         C.  Landlord  shall not have  exercised  any  remedy  for a Default  by
Tenant.

         D. Tenant  having  reimbursed  to  Landlord  all  reasonable  costs and
reasonable  attorneys'  fees (at actual time  incurred  and at hourly rates then
customary)   incurred  by  Landlord  in  conjunction  with  the  processing  and
documentation of any such requested subletting, assignment or encumbrance.

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<PAGE>

         E. Tenant  having  delivered to Landlord a complete and  fully-executed
duplicate  original  of  such  sublease  agreement,   assignment   agreement  or
encumbrance (as applicable) and all related agreements.

         F. Tenant  having paid, or having agreed in writing to pay as to future
payments,  to Landlord fifty percent of all assignment  consideration  or excess
rentals to be paid to Tenant or to any other on Tenant's  behalf or for Tenant's
benefit for such assignment or subletting as follows:

                  (1) If Tenant assigns its interest under this Lease and if all
or a  portion  of the  consideration  for such  assignment  is to be paid by the
assignee at the time of the assignment,  that Tenant shall have paid to Landlord
and  Landlord  shall  have  received  an amount  equal to fifty  percent  of the
assignment consideration so paid or to be paid (whichever is the greater) at the
time of the assignment by the assignee; or

                  (2) If Tenant  assigns  its  interest  under this Lease and if
Tenant is to receive all or a portion of the  consideration  for such assignment
in future  installments,  that Tenant and Tenant's  assignee  shall have entered
into a written  agreement with and for the benefit of Landlord  satisfactory  to
Landlord and its counsel whereby Tenant and Tenant's  assignee  jointly agree to
pay to Landlord an amount equal to fifty  percent of all such future  assignment
consideration  installments  to be  paid  by  such  assignee  as and  when  such
assignment consideration is so paid.

                  (3) If Tenant subleases the Leased  Premises,  that Tenant and
Tenant's  sublessee shall have entered into a written agreement with and for the
benefit of Landlord  satisfactory to Landlord and its counsel whereby Tenant and
Tenant's  sublessee jointly agree to pay to Landlord fifty percent of all excess
rentals to be paid by such  sublessees  as and when such  excess  rentals are so
paid.

         7.5 ASSIGNMENT  CONSIDERATION AND EXCESS RENTALS DEFINED:  For purposes
of this  Article,  including any amendment to this Article by way of addendum or
other writing, the term "assignment  consideration" shall mean all consideration
to be paid by the  assignee to Tenant or to any other on Tenant's  behalf or for
Tenant's benefit as consideration for such assignment, less any commissions paid
by Tenant to a licensed real estate broker for arranging such assignment (not to
exceed  then  standard  rates),  and the term  "excess  rentals"  shall mean all
consideration to be paid by the sublessees to Tenant or to any other on Tenant's
behalf or for Tenant's benefit for the sublease of the Leased Premises in excess
of the rent due to Landlord  under the terms of this Lease for the same  period,
less any  commissions  paid by Tenant  to a  licensed  real  estate  broker  for
arranging such sublease (not to exceed then standard rates).  Tenant agrees that
the portion of any assignment  consideration  and/or excess rentals arising from
any assignment or subletting by Tenant which is to be paid to Landlord  pursuant
to this  Article now is and shall then be the  property of Landlord  and not the
property of Tenant.  Notwithstanding  anything to the  contrary,  the  following
costs  shall be  deducted  from (a) all  consideration  received  by Tenant with
respect  to an  assignment  and (b) all  consideration  in excess of rent due to
Landlord  under the Lease for the same period  with  respect to  subletting,  to
determine  the  meaning  of the  terms  "assignment  consideration"  or  "excess
rentals":  (i) any  commissions  paid by Tenant to a licensed real estate broker
for arranging such sublease or assignment  (not to exceed then standard  rates);
and (ii) any costs of retrofit,  tenant improvements,  or restoration  necessary
for a subtenant or assignee and paid for by Tenant.

         7.6  PAYMENTS:  All  payments  required  by this  Article to be made to
Landlord  shall be made in cash in full as and when they become due. At the time
Tenant,  Tenant's  assignee or  subleases  makes each such  payment to Landlord,
Tenant or Tenant's  assignee or subleases,  as the case may be, shall deliver to
Landlord an itemized  statement in reasonable detail showing the method by which
the amount due Landlord was  calculated  and  certified by the party making such
payment as true and correct.

         7.7 GOOD  FAITH:  The  rights  granted  to Tenant by this  Article  are
granted  in  consideration  of  Tenant's  express  covenant  that all  pertinent
allocations  which are made by Tenant  between  the  rental  value of the Leased
Premises  and the  value  of any of  Tenant's  personal  property  which  may be
conveyed  or leased  generally  concurrently  with and which may  reasonably  be
considered  a part  of the  same  transaction  as the  permitted  assignment  or
subletting  shall be made fairly,  honestly  and in good faith.  If Tenant shall
breach this Covenant of Good Faith,  Landlord may immediately  declare Tenant to
be in default  under the terms of this  Lease and  terminate  this Lease  and/or
exercise any

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other rights and remedies  Landlord  would have under the terms of this Lease in
the case of a material default by Tenant under this Lease.

         7.8  EFFECT  OF  LANDLORD'S  CONSENT:  No  subletting,   assignment  or
encumbrance,  even with the consent of  Landlord,  shall  relieve  Tenant of its
personal  and  primary  obligation  to  pay  rent  and  to  perform  all  of the
obligations to be performed by Tenant  hereunder.  Consent by Landlord to one or
more assignments or encumbrances of Tenant's interest in this Lease or to one or
more  sublettings of the Leased  Premises shall not be deemed to be a consent to
any subsequent  assignment,  encumbrance  or subletting.  If Landlord shall have
been  ordered by a court of  competent  jurisdiction  to consent to a  requested
assignment or  subletting,  or such an assignment or subletting  shall have been
ordered over the objection of Landlord,  such assignment or subletting shall not
be binding  between the assignee (or  subleases) and Landlord until such time as
all conditions set forth in Article 7.4 above have been fully  satisfied (to the
extent not then  satisfied)  by the assignee or  subleases,  including,  without
limitation,  the  payment to Landlord  of all agreed  assignment  considerations
and/or excess rentals then due Landlord.



ARTICLE 8:
LIMITATION ON LANDLORD'S LIABILITY AND INDEMNITY

         8.1 LIMITATION ON LANDLORD'S LIABILITY AND RELEASE:  Landlord shall not
be liable to Tenant for, and Tenant hereby  releases  Landlord and its partners,
principals,  officers, agents and employees from, any and all liability, whether
in  contract,  tort or on any  other  basis,  for any  injury  to or any  damage
sustained by Tenant,  Tenant's agents,  employees,  contractors or invitees, any
damage to Tenant's property; or any loss to Tenant's business,  loss of Tenant's
profits or other financial loss of Tenant  resulting from or attributable to the
condition of, the management  of, the repair or  maintenance  of, the protection
of, the supply of services or utilities to, the damage to or  destruction of the
Leased  Premises,  the  Building,  the  Project or the Common  Areas,  including
without limitation (i) the failure, interruption, rationing or other curtailment
or cessation in the supply of electricity,  water,  gas or other utility service
to the  Project,  the  Building or the Leased  Premises;  (ii) the  vandalism or
forcible entry into the Building or the Leased  Premises;  (iii) the penetration
of water into or onto any portion of the Leased  Premises  through roof leaks or
otherwise;  (iv) the failure to provide security and/or adequate  lighting in or
about the Project, the Building or the Leased Premises; (v) the existence of any
design or  construction  defects within the Project,  the Building or the Leased
Premises;  (vi) the failure of any mechanical systems to function properly (such
as the HVAC  systems);  or (vii) the  blockage  of access to any  portion of the
Project,  the  Building or the Leased  Premises,  except that Tenant does not so
release  Landlord from such liability to the extent such damage was  proximately
caused by Landlord's gross negligence, willful misconduct, or Landlord's failure
to perform an  obligation  expressly  undertaken  pursuant to this Lease after a
reasonable  period of time shall have lapsed following receipt of written notice
from Tenant to so perform such obligation.  In this regard,  Tenant acknowledges
that it is fully  apprised of the  provisions  of Law relating to releases,  and
particularly  to those  provisions  contained in Section 1542 of the  California
Civil Code which reads as follows:

A general  release does not extend to claims which the creditor does not know or
suspect to exist in his favor at the time of  executing  the  release,  which if
known by him must have materially affected his settlement with the debtor.

Notwithstanding such statutory provision,  and for the purpose of implementing a
full and complete release and discharge, Tenant hereby (i) waives the benefit of
such statutory  provision and (ii) acknowledges  that, subject to the exceptions
specifically  set forth  herein,  the  release and  discharge  set forth in this
Article is a full and  complete  settlement  and  release and  discharge  of all
claims and is intended to include in its effect, without limitation,  all claims
which Tenant, as of the date hereof, does not know of or suspect to exist in its
favor.  Except as to  Landlord's  successors  acquiring  the  building by way of
foreclosure  or deed in lieu of  foreclosure,  notwithstanding  anything  to the
contrary in Section 8.1 of the Lease form,  Tenant  shall not release  Landlord,
and Landlord shall remain liable to Tenant for the following:

(i) Landlord's liability to repair violations of Law in Landlord's Work existing
as of the Lease Commencement Date; and

                                       43

<PAGE>

(ii) Liability for hazardous  materials  other than liability  assumed by Tenant
pursuant to Paragraph 16 of this Addendum.

         8.2 TENANT'S INDEMNIFICATION OF LANDLORD: Except to the extent that the
waivers of subrogation set forth in Paragraph 9.3 are  applicable,  Tenant shall
defend with competent counsel  satisfactory to Landlord any claims made or legal
actions  filed or threatened  against  Landlord with respect to the violation of
any law, or the death,  bodily injury,  personal  injury,  property  damage,  or
interference  with  contractual or property  rights  suffered by any third party
(including  other  tenants  within  the  Project)  occurring  within  the Leased
Premises or resulting from Tenant's use or occupancy of the Leased Premises, the
Building or the Outside Areas, or resulting from Tenant's activities in or about
the Leased Premises, the Building, the Outside Areas or the Property, and Tenant
shall indemnify and hold Landlord, Landlord's principals,  employees, agents and
contractors harmless from any loss, liability,  penalties, or expense whatsoever
(including any loss attributable to vacant space which otherwise would have been
leased,  but for such  activities)  resulting  therefrom,  except to the  extent
proximately  caused by the active and gross negligence or willful  misconduct of
Landlord.  This  indemnity  agreement  shall  survive the  expiration  or sooner
termination  of this  Lease,  provided  that  Tenant  shall not be  required  to
indemnify  Landlord  under this  section  8.2 with  respect to events that first
occur after the later of (a) the date of the expiration,  or sooner termination,
of this Lease,  or (b) the date Tenant actually  vacates the Premises,  provided
that Landlord has actual notice of such vacation.  Tenant shall not be obligated
to  indemnify  Landlord  against  loss  resulting  from and to the extent of the
active and gross  negligence  or willful  misconduct  of Landlord or its agents,
employees or contractors.


ARTICLE 9:
INSURANCE

         9.1 TENANT'S INSURANCE:  Tenant shall maintain insurance complying with
all of the following:

         A. Tenant shall procure,  pay for and keep in full force and effect, at
all times during the Lease Term, the following:

                  (1) Commercial  General  Liability  insurance  insuring Tenant
against liability for bodily injury,  death, property damage and personal injury
resulting from Tenant's use or occupancy of the Leased Premises or the Building,
Outside Areas,  Property,  or Common Areas or resulting from Tenant's activities
in or about the Leased Premises.  Such insurance shall be on an occurrence basis
with a  combined  single  limit of  liability  of not less  than the  amount  of
Tenant's Required  Liability Coverage (as set forth in Article 1). The policy or
policies shall be endorsed to name Landlord and such others as are designated by
Landlord  as  additional  insureds  in the  form  equivalent  to  CG20111185  or
successor and shall contain the following additional endorsement: "The insurance
afforded to the  additional  insureds is primary  insurance.  If the  additional
insureds have other insurance which is applicable to the loss on a contributing,
excess or contingent  basis,  the amount of this insurance  company's  liability
under this policy shall not be reduced by the existence of such other insurance.
Any  insurance   carried  by  the  additional   insureds  shall  be  excess  and
noncontributing with the insurance provided by the tenant." The policy shall not
be canceled or reduced  without at least 30 days  written  notice to  additional
insureds.  If the policy insures more than one location, it shall be endorsed to
show  that the  limits  and  aggregate  apply  per  location  using  endorsement
CG25041185 or successor.  Tenant's policy shall also contain the severability of
interest and cross-liability endorsement or clauses.
                  (2) Fire and property  damage  insurance in so-called  Special
Form plus flood insuring  Tenant  against loss from physical  damage to Tenant's
personal property,  inventory, trade fixtures and improvements within the Leased
Premises  with  coverage in amounts that a reasonable  and prudent  tenant would
procure, but in no event less than $5,000,000.00 in coverage;
                  (3)      [intentionally omitted];
                  (4)      Boiler and machinery insurance, if applicable;
                  (5) Liability  insurance to cover sale or distribution of food
and beverages within the Leased Premises, to the extent obtainable, coverage for
liability arising out of the  distribution,  sale, or consumption of food and/or
beverages,  including alcoholic beverages if applicable,  at the Leased Premises
for not less than Tenant's Required  Liability  Coverage as set forth in Article
1;

                                       44

<PAGE>

                  (6) To the  extent  required  by  Law,  workers'  compensation
insurance and any other employee benefit insurance sufficient to comply with all
Laws which policy shall be endorsed to provide  thirty (30) days written  notice
of cancellation to Landlord;
                  (7) With respect to making of alterations or the  construction
of  improvements  or the like  undertaken  by Tenant,  contingent  liability and
builder's  risk  insurance,  in an  amount  and with  coverage  satisfactory  to
Landlord;
                  (8)      [intentionally omitted]; and
                  (9)  Comprehensive  Auto  Liability  insurance with a combined
single limit coverage of not less than the amount of Tenant's Required Liability
Coverage (as set forth in Article I) for bodily  injury and/or  property  damage
liability for: a) Owned autos b) Hired or borrowed  autos c) Non-owned  autos d)
Auto blanket contractual form CA0029. The policy shall be endorsed to provide 30
days written notice of cancellation to Landlord.

         B. Each policy of insurance  required to be carried by Tenant  pursuant
to this  Article  or  actually  carried  by Tenant  with  respect  to the Leased
Premises  or the  Property  (i) shall be in a form  reasonably  satisfactory  to
Landlord,  and (ii) shall be provided by carriers admitted to do business in the
state of California reasonably acceptable to Landlord.

         C. Prior to the time Tenant or any of its contractors enters the Leased
Premises,  Tenant shall  deliver to the Landlord  with respect to each policy of
insurance  required  to be  carried  by  Tenant  pursuant  to  this  Article,  a
certificate of the insurer  certifying,  in a form satisfactory to the Landlord,
that the policy has been issued and premium paid providing the coverage required
by this Article and containing the provisions  specified herein. With respect to
each renewal or  replacement of any such  insurance,  the  requirements  of this
Article must be complied  with not less than 30 days prior to the  expiration or
cancellation  of the policy being renewed or replaced.  Landlord may at any time
and  from  time-to-time  inspect  and/or  copy  any and all  insurance  policies
required to be carried by Tenant pursuant to this Article. If Landlord's lender,
insurance  broker or advisor or counsel  reasonably  determines at any time that
the form or  amount of  coverage  set forth in  Article  9.1A for any  policy of
insurance  Tenant is required to carry pursuant to this Article is not adequate,
then Tenant shall  increase  the amount of coverage  for such  insurance to such
greater  amount or change the form as  Landlord's  lender,  insurance  broker or
advisor or counsel  reasonably  deems adequate  (provided  however such increase
level of  coverage  may not  exceed  the level of  coverage  for such  insurance
commonly carried by comparable businesses similarly situated and operating under
similar circumstances).

         D. The Commercial  General Liability  insurance carried by Tenant shall
specifically insure the performance by Tenant of the Indemnification  provisions
set forth in Article 8.2 of this Lease Form provided, however, nothing contained
in this Article 9 shall be construed to limit the  liability of Tenant under the
Indemnification provisions set forth in said Article 8.2.

         9.2  LANDLORD'S  INSURANCE:  With  respect to insurance  maintained  by
Landlord:

         A. Landlord shall maintain,  as the minimum coverage  required of it by
this Lease,  property  insurance in so-called  "Special" form insuring  Landlord
(and such others as Landlord may designate) against loss from physical damage to
the  Building  with  coverage of not less than one  hundred  percent of the full
actual  replacement  cost  thereof  (with  an  endorsement  for  replacement  in
compliance  with all  building  codes  and other  laws).  Such  property  damage
insurance,  at  Landlord's  election but without any  requirement  on Landlord's
behalf to do so, (i) may be  endorsed  to include or  separate  policies  may be
carried to cover loss or damage caused by any  additional  perils  against which
Landlord  may elect to  insure,  including  earthquake  and/or  flood;  (ii) may
provide  coverage for loss of rents for a period of up to twelve months;  and/or
(iii)  may  contain   "deductibles"  not  exceeding  Ten  Thousand  Dollars  per
occurrence or such other amount as is reasonably acceptable to both Landlord and
Tenant.  Landlord  shall not be required to cause such insurance to cover any of
Tenant's personal property,  inventory and trade fixtures, or any modifications,
alterations  or  improvements  made or  constructed  by Tenant to or within  the
Leased Premises.

         B. Landlord  shall  maintain  Commercial  General  Liability  insurance
insuring  Landlord  (and such  others as are  designated  by  Landlord)  against
liability for personal  injury,  bodily  injury,  death,  and damage to property
occurring  in,  on or  about,  or  resulting  from the use or  occupancy  of the
Property,  or any portion  thereof,  with combined  single limit  coverage of at
least Two Million Dollars.  Landlord may carry such greater coverage as Landlord
or Landlord's

                                       45

<PAGE>

Lender,  insurance  broker or advisor or counsel may from time to time determine
is  reasonably  necessary  for  the  adequate  protection  of  Landlord  and the
Property.

         C.  Landlord may maintain any other  insurance  which in the opinion of
its  insurance  broker or advisor or legal counsel is prudent to carry under the
given  circumstances  provided such  insurance is commonly  carried by owners of
property similarly situated and operating under similar  circumstances,  and the
cost thereof is customarily  paid by tenants  pursuant to industrial  triple net
leases.  Notwithstanding  anything  to the  contrary in Section 9.2 of the Lease
Form:

         1.  Tenant's  obligation to pay for the cost of any  earthquake  and/or
flood insurance  premiums is limited to an amount which is equal to or less than
competitive premiums charged by reputable carriers,  with coverage acceptable to
Landlord.

         2. Uninsured losses and earthquake  and/or flood insurance  deductibles
shall be handled in the following manner:

                  (i) Tenant shall pay for the  uninsured  loss or earthquake or
flood  insurance  deductible  up to an amount equal to ten percent  (10%) of the
replacement cost of the building;

                  (ii) If  Tenant's  contribution  of ten  percent  (10%) of the
replacement cost of the building is not sufficient to cover an uninsured loss or
earthquake and/or flood insurance deductible, Landlord may pay the difference or
Landlord may  terminate  the Lease unless Tenant agrees to pay the entire amount
which is in excess of ten percent (10%) of the Building replacement cost;

                  (iii) If Landlord contributes to payment for an uninsured loss
or earthquake and/or flood insurance deductible, such amount shall be repaid and
amortized by Tenant over the remaining  term of the Lease together with interest
at Wells Prime Plus Two, and Tenant shall pay same as Additional Rent.  However,
Tenant  shall in no event be  required to pay an amount in excess of the product
of six and one-half  cents  ($0.065)  times the Rentable Area of the Building in
square feet per month (the "Ceiling Amount"). All amortization will terminate on
the expiration of Tenant's occupancy of the Building.

                  (iv)  If the  Ceiling  Amount  is  not  adequate  to  amortize
Landlord's  contribution  to  an  uninsured  loss  or  earthquake  and/or  flood
insurance deductible over the initial Lease Term, and Tenant exercises an option
to renew the Lease or otherwise remains in possession of the Premises,  Tenant's
payment  shall  continue  at the  Ceiling  Amount  during any period of Tenant's
occupancy of the  Premises  until  Landlord's  contribution  is  amortized  with
interest as provided above.

         9.3 MUTUAL WAIVER OF SUBROGATION:  Landlord hereby releases Tenant, and
Tenant hereby releases Landlord and its respective principals, officers, agents,
employees and servants, from any and all liability for loss, damage or injury to
any person or property in or about the Leased  Premises or the Property which is
caused by or results from a peril or event or  happening  which would be covered
by insurance  required to be carried by the party sustaining such loss under the
terms of this Lease, or is covered by insurance actually carried and in force at
the time of the loss, by the party sustaining such loss; provided, however, that
such waiver shall be  effective  only to the extent  permitted by the  insurance
covering such loss and to the extent such insurance is not  prejudiced  thereby.
Each party  shall  cause each  insurance  policy it obtains to provide  that the
insurer  thereunder  waives  all  right of  recovery  by way of  subrogation  as
required herein in connection with any injury or damage covered by the policy to
the extent such endorsement is available at commercially  reasonable  rates, and
should endorsement not be available at commercially  reasonable rates, then such
party shall notify the other party of that fact.

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<PAGE>

ARTICLE 10:
DAMAGE TO LEASED PREMISES

         10 LANDLORD'S DUTY TO RESTORE: If the Leased Premises,  the Building or
the  Outside  Areas are damaged by any peril  after the  Effective  Date of this
Lease,  Landlord  shall  restore the same, as and when required by this Article,
unless  this Lease is  terminated  by Landlord  pursuant  to Article  10.3 or by
Tenant  pursuant to Article 10.4. If this Lease is not so terminated,  then upon
the issuance of all necessary governmental permits,  Landlord shall commence and
diligently  prosecute to completion the restoration of the Leased Premises,  the
Building or the Outside Areas, as the case may be, to the extent then allowed by
Law, to  substantially  the same  condition  in which it existed as of the Lease
Commencement  Date, but in compliance  with all then existing  Laws.  Landlord's
obligation  to  restore  shall be  limited to the  improvements  constructed  by
Landlord,  including but not limited to Landlord's Work.  Landlord shall have no
obligation to restore any improvements  made by Tenant to the Leased Premises or
any of Tenant's personal property,  inventory or trade fixtures. Upon completion
of the restoration by Landlord,  Tenant shall forthwith  replace or fully repair
all  of  Tenant's  personal  property,   inventory,  trade  fixtures  and  other
improvements  constructed  by Tenant to like or similar  condition as existed at
the time of such damage or destruction.


ARTICLE 11
CONDEMNATION

         11.1  TENANT'S  RIGHT TO  TERMINATE:  Except as  otherwise  provided in
Article 11.4 below regarding temporary takings,  Tenant shall have the option to
terminate  this  Lease  if,  as a result of any  taking,  (i) all of the  Leased
Premises is taken,  (ii) twenty percent or more of the Leased  Premises is taken
and the part of the Leased  Premises  that remains  cannot,  within a reasonable
period of time,  be made  reasonably  suitable  for the  continued  operation of
Tenant's  business,  (iii) there is a taking of a portion of the  Outside  Areas
and, as a result of such taking,  Landlord  cannot provide parking spaces within
the Property (or within a reasonable  distance  therefrom) equal in number to at
least  eighty-five  percent of the number of parking spaces  existing within the
Outside Areas immediately prior to such taking,  whether by rearrangement of the
remaining  parking areas in the Outside Areas  (including,  if Landlord  elects,
construction  of multi-deck  parking  structures or restriping  for compact cars
where  permitted by Law), or (iv) because of the Laws then in force,  the Leased
Premises may not be used for the same use being made thereof before such taking,
whether or not restored as required by Article 11.3 below.  Tenant must exercise
such option within a reasonable  period of time, to be effective on the later to
occur of (i) the date that  possession of that portion of the Leased Premises or
the Outside  Areas that is condemned is taken by the  condemnor or (ii) the date
Tenant vacates the Leased Premises.

         11.2  LANDLORD'S  RIGHT TO TERMINATE:  Except as otherwise  provided in
Article 11.4 below regarding  temporary takings,  Landlord shall have the option
to terminate this Lease if, as a result of any taking,  (i) all or substantially
all of the Leased Premises is taken,  (ii) more than  thirty-three and one-third
percent  of the  Outside  Areas is taken,  or (iii)  because of the Laws then in
force,  the Leased  Premises may not be used for the same use being made thereof
before such  taking,  whether or not restored as required by Article 11.3 below.
Any,  such  option  to  terminate  by  Landlord  must be  exercisable  within  a
reasonable period of time, to be effective as of the date possession is taken by
the condemnor.

         11.3 RESTORATION:  If any part of the Leased Premises,  the Building or
the Outside Areas is taken and this Lease is not terminated, then Landlord shall
repair any damage  occasioned  thereby to the  remainder  thereof to a condition
reasonably  suitable for Tenant's  continued  operations and  otherwise,  to the
extent practicable, in the manner and to the extent provided in Article 10.1.

         11.4  TEMPORARY  TAKING:  If any  portion  of the  Leased  Premises  is
temporarily  taken, this Lease shall remain in effect except that if any portion
of the Leased  Premises is  temporarily  taken for a period which either exceeds
nine months or which extends beyond the Lease Expiration Date, then Tenant shall
have the option to terminate  this Lease,  effective on the date  possession  is
taken by the condemnor.

                                       47

<PAGE>

         11.5 DIVISION OF CONDEMNATION  AWARD:  Any award made for any taking of
the Property,  the Building,  the Outside Areas or the Leased  Premises,  or any
portion  thereof,  shall  belong to and be paid to Landlord,  and Tenant  hereby
assigns to  Landlord  all of its right,  title and  interest  in any such award;
provided,  however,  that Tenant shall be entitled to receive any portion of the
award  that  is made  specifically  (i) for the  taking  of  personal  property,
inventory  or trade  fixtures  belong to Tenant,  (ii) for the  interruption  of
Tenant's  business or its moving costs, or (iii) for loss of Tenant's  goodwill,
or (iv) for any temporary  taking where this Lease is not terminated as a result
of such taking, or (v) for the value of any leasehold  improvements installed by
Tenant at its cost that Tenant  could  remove  pursuant to  Paragraph  6.2.  The
rights of Landlord and Tenant regarding any condemnation  shall be determined as
provided in this Article, and each party hereby waives the provisions of Section
1265.130 of the California  Code of Civil  Procedure,  and the provisions of any
similar law hereinafter enacted,  allowing either party to petition the Superior
Court to terminate  this Lease and/or  otherwise  allocate  condemnation  awards
between Landlord and Tenant in the event of a taking of the Leased Premises.

         11.6 ABATEMENT OF RENT: In the event of a taking of the Leased Premises
which does not result in a  termination  of this Lease  (other  than a temporary
taking),  then, as of the date possession is taken by the condemning  authority,
the Base Monthly Rent shall be reduced in the same  proportion  that the area of
that part of the Leased  Premises so taken (less any addition to the area of the
Leased Premises by reason of any reconstruction) bears to the area of the Leased
Premises  immediately  prior to such  taking.  Notwithstanding  anything  to the
contrary in Section 11.6 of the Lease Form:

In the event of a taking of any parking area of, or any driveway  access to, the
Leased  Premises  which has a  material  adverse  effect on  Tenant's  access or
parking rights,  Landlord or Tenant shall have the right, at either's option, to
require  Landlord,  at the sole cost and expense of the party who exercises such
right,  to convert Outside Area which is located on the Property then being used
for  recreational  facilities  or  landscaped  areas to parking  area use to the
extent  necessary  to cure the  material  adverse  effect of Tenant's  access or
parking rights. To the extent Landlord receives a condemnation award as a result
of such taking for such area, the proceeds thereof shall be used to pay for such
cost.

         11.7  TAKING  DEFINED:  The term  "taking"  or  "taken" as used in this
Article 11 shall mean any  transfer or  conveyance  of all or any portion of the
Property to a public or quasi-public  agency or other entity having the power of
eminent domain  pursuant to or as a result of the exercise of such power by such
an agency,  including  any inverse  condemnation  and/or any sale or transfer by
Landlord of all or any portion of the Property to such an agency under threat of
condemnation or the exercise of such power.

ARTICLE 12:
DEFAULT AND REMEDIES

         12.1 EVENTS OF TENANT'S DEFAULT: Tenant shall be in default ("Default")
of its obligations under this Lease if any of the following events occur:

         A. Tenant shall have failed to pay Base Monthly Rent or any  Additional
Rent when due within six days after  receiving  written notice from Landlord.  A
statutory notice under CCP 1161, and served pursuant to CCP 1162,  providing for
6  days  to  cure  shall  satisfy  such  notice  requirement  and  is  expressly
authorized; or

         B. Except as set forth  elsewhere  in this Article  12.1,  Tenant shall
have failed to perform any term,  covenant or  condition  of this Lease,  except
those  requiring  the payment of Base Monthly Rent or  Additional  Rent,  within
thirty days after written  notice from Landlord to Tenant  specifying the nature
of such failure and requesting  Tenant to perform same (or such longer period of
time if  reasonably  necessary to cure the default so long as Tenant  begins the
cure within such thirty (30)-day period and prosecutes it with due diligence and
best faith efforts to completion); or

         C.  Tenant  shall have  sublet  the  Leased  Premises  or  assigned  or
encumbered its interest in this Lease in violation of the  provisions  contained
in Article 7, whether voluntarily or by operation of Law; or

                                       48

<PAGE>

         D. Tenant shall have failed to continuously  occupy the Leased Premises
for a  period  of ten  (10)  consecutive  days  without  maintaining  reasonable
security with respect to the Leased Premises after written  notice.  A statutory
notice under CCP 1161, and served pursuant to CCP 1162, providing for 10 days to
cure shall satisfy such notice requirement and is expressly authorized; or

         E.  Tenant or any  Guarantor  of this  Lease  shall have  permitted  or
suffered the sequestration or attachment of, or execution on, or the appointment
of a custodian or receiver with respect to, all or any  substantial  part of the
property  or assets of  Tenant  (or such  Guarantor)  or any  property  or asset
essential to the conduct of Tenant's (or such Guarantor's)  business, and Tenant
(or such Guarantor)  shall have failed to obtain a return or release of the same
within thirty days thereafter,  or prior to sale pursuant to such sequestration,
attachment or levy, whichever is earlier; or

         F.  Tenant or any  Guarantor  of this  Lease  shall have made a general
assignment  of all or a  substantial  part of its assets for the  benefit of its
creditors; or

         G. Tenant or any Guarantor of this Lease shall have allowed (or sought)
to have entered against it a decree or order which: (i) grants or constitutes an
order for relief,  appointment of a trustee, or confirmation or a reorganization
plan under the bankruptcy  laws of the United States;  (ii) approves as properly
filed a petition  seeking  liquidation or  reorganization  under said bankruptcy
laws or any other debtor's relief law or similar statute of the United States or
any state thereof;  or (iii) otherwise  directs the winding up or liquidation of
Tenant;  provided,  however, if any decree or order was entered without Tenant's
consent  or over  Tenant's  objection,  Landlord  may not  terminate  this Lease
pursuant to this  Subarticle  if such decree or order is  rescinded  or reversed
within sixty days after its original entry; or

         H. Tenant or any  Guarantor of this Lease shall have availed  itself of
the protection of any debtor's  relief law,  moratorium law or other similar Law
which does not require the prior entry of a decree or order.

         12.2 LANDLORD'S  REMEDIES:  In the event of any default by Tenant,  and
without limiting Landlord's right to indemnification as provided in Article 8.2,
Landlord shall have the following remedies,  in addition to all other rights and
remedies provided by Law or otherwise  provided in this Lease, to which Landlord
may resort cumulatively, or in the alternative:

         A. Landlord may, at Landlord's election,  keep this Lease in effect and
enforce,  by an action at law or in equity, all of its rights and remedies under
this Lease including,  without limitation, (i) the right to recover the rent and
other sums as they become due by  appropriate  legal  action,  (ii) the right to
make  payments  required  by Tenant,  or  perform  Tenant's  obligations  and be
reimbursed by Tenant for the cost thereof with interest at the then maximum rate
of  interest  not  prohibited  by Law from the date the sum is paid by  Landlord
until  Landlord is  reimbursed  by Tenant,  and (iii) the remedies of injunctive
relief and specific  performance  to prevent  Tenant from violating the terms of
this Lease and/or to compel Tenant to perform its obligations  under this Lease,
as the case may be.

         B. Landlord may, at Landlord's election, terminate this Lease by giving
Tenant written notice of termination,  in which event this Lease shall terminate
on the date set forth for termination in such notice. Any termination under this
Subarticle  shall not relieve  Tenant from its obligation to pay to Landlord all
Base Monthly Rent and Additional  Rent then or thereafter due, or any other sums
due or thereafter  accruing to Landlord,  or from any claim  against  Tenant for
damages previously accrued or then or thereafter accruing. In no event shall any
one or more of the  following  actions by Landlord,  in the absence of a written
election by Landlord to terminate  the Lease,  constitute a  termination  of the
Lease:

                  (1)  Appointment  of a receiver  or keeper in order to protect
Landlord's interest hereunder;

                  (2)  Consent  to any  subletting  of the  Leased  Premises  or
assignment of this Lease by Tenant, whether pursuant to the provisions hereof or
otherwise; or

                  (3) Any other action by Landlord or Landlord's agents intended
to  mitigate  the  adverse  effects  of any  breach  of this  Lease  by  Tenant,
including,  without  limitation,  any action  taken to maintain and preserve the
Leased

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Premises  or any  action  taken to relet the  Leased  Premises,  or any  portion
thereof,  for the account of Tenant and in the name of Tenant  provided that any
reletting of the Premises by Landlord shall terminate the Lease.

         C. In the event  Tenant  breaches  this Lease and  abandons  the Leased
Premises,  Landlord may terminate this Lease, but this Lease shall not terminate
unless  Landlord  gives  Tenant  written  notice of  termination  or  terminates
Tenant's  right to  possession  of the Leased  Premises.  If  Landlord  does not
terminate  this Lease by giving  written notice of termination or by terminating
Tenant's  right to possession of the Leased  Premises,  Landlord may enforce all
its rights and remedies under this Lease, including the right to recover rent as
it becomes  due under this Lease as provided in  California  Civil Code  Section
1951.4, as in effect on the Effective Date of this Lease.

         D. In the event  Landlord  terminates  this  Lease,  Landlord  shall be
entitled,  at  Landlord's  election,  to  damages  in an  amount as set forth in
California Civil Code Section 1951.2, as in effect on the Effective Date of this
Lease. For purposes of computing damages pursuant to Section 1951.2, an interest
rate equal to the maximum rate of interest  then not  prohibited by Law shall be
used where permitted. Such damages shall include, without limitation:

                  (1) The worth at the time of award of the  amount by which the
unpaid  rent for the  balance  of the term after the time of award  exceeds  the
amount of such rental  loss that  Tenant  proves  could be  reasonably  avoided,
computed by discounting  such amount at the discount rate of the Federal Reserve
Bank of San Francisco, at the time of award plus one percent; and

                  (2) Any other amount necessary to compensate  Landlord for all
detriment proximately caused by Tenant's failure to perform Tenant's obligations
under this Lease,  or which in the ordinary  course of things would be likely to
result therefrom,  including without limitation, the following: (i) expenses for
cleaning,  repairing  or  restoring  the  Leased  Premises;  (ii)  expenses  for
altering,  remodeling or otherwise improving the Leased Premises for the purpose
of reletting, including removal of existing leasehold improvements but excluding
installation of additional leasehold improvements (regardless of how the same is
funded,  including  reduction  of rent,  a direct  payment or allowance to a new
tenant,  or  otherwise);  (iii)  broker's fees allocable to the remainder of the
term of this Lease, advertising costs and other expenses of reletting the Leased
Premises; (iv) costs of carrying and maintaining the Leased Premises which costs
would have been billed to Tenant as Additional Rent had Tenant not defaulted and
which include but are not limited to taxes, insurance premiums, utility charges,
landscape maintenance costs, costs of maintaining electrical,  plumbing and HVAC
equipment and costs for providing security for the Leased Premises; (v) expenses
incurred in  removing,  disposing  of and/or  storing  any of Tenant's  personal
property,  inventory or trade fixtures remaining therein;  (vi) attorneys' fees,
expert  witness  fees,  court costs and other  reasonable  expenses  incurred by
Landlord (but not limited to taxable costs) in retaking possession of the Leased
Premises,  establishing  damages hereunder,  and re-leasing the Leased Premises;
and (vii) any other expenses, costs or damages otherwise incurred or suffered as
a result of Tenant's default.

         12.3 LANDLORD'S  DEFAULT AND TENANT'S  REMEDIES:  In the event Landlord
fails to  perform  any of its  obligations  under  this  Lease,  Landlord  shall
nevertheless  not be in default under the terms of this Lease until such time as
Tenant shall have first given Landlord  written notice  specifying the nature of
such failure to perform its obligations, and then only after Landlord shall have
had a  reasonable  period of time  following  its receipt of such notice  within
which to perform such obligations.  In the event of Landlord's  default as above
set forth, then, and only then, Tenant shall have the following remedies only:

         A.  Tenant may then  proceed in equity or at law to compel  Landlord to
perform its  obligations  and/or to recover damages  proximately  caused by such
failure to perform  (except as and to the extent  Tenant has waived its right to
damages as provided in this Lease).

         B.  Tenant,  at its  option,  may then cure any  default of Landlord at
Landlord's cost. If, pursuant to this Subarticle, Tenant reasonably pays any sum
to any third party or does any act that  requires  the payment of any sum to any
third part at any time by reason of Landlord's  default,  the sum paid by Tenant
shall be  immediately  due from  Landlord to Tenant at the time Tenant  supplies
Landlord  with an invoice  therefor  (provided  such  invoice  sets forth and is
accompanied by a written  statement of Tenant setting forth in reasonable detail
the amount paid,  the party to whom it was paid,  the date it was paid,  and the
reasons giving rise to such payment), together with interest at the maximum rate
permitted by Law from the date of such invoice  until  Tenant is  reimbursed  by
Landlord. Tenant may not offset

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<PAGE>

such sums against any  installment  of rent due Landlord under the terms of this
Lease.  The  remedies  afforded  Tenant  in this  Section  12.3 are  granted  in
additional to any and all remedies afforded Tenant at law or in equity.

         12.4  LIMITATION ON TENANT'S  RECOURSE:  If Landlord is a  corporation,
trust, partnership, joint venture,  unincorporated association, or other form of
business  entity,  Tenant agrees that (i) the obligations of Landlord under this
Lease shall not  constitute  personal  obligations  of the officers,  directors,
trustees,  partners, joint venturers,  members, owners,  stockholders,  or other
principals of such  business  entity and (ii) Tenant shall have recourse only to
the assets of such business entity for the  satisfaction of such obligations and
not against the assets of such officers,  directors,  trustees,  partners, joint
venturers, members, owners, stockholders or principals (other than to the extent
of their interest in the assets owned by such business entity). Additionally, if
Landlord is a partnership, then Tenant covenants and agrees:

         A. No partner of Landlord shall be sued or named as a party in any suit
or action  brought by Tenant  with  result to any  alleged  breach of this Lease
(except to the extent necessary to secure  jurisdiction over the partnership and
then only for that sole purpose);

         B. No service of process  shall be made against any partner of Landlord
except for the sole purpose of securing jurisdiction over the partnership; and

         C. No writ of execution  will ever be levied  against the assets of any
partner of  Landlord  other than to the extent of his  interest in the assets of
the partnership.

Tenant further agrees that each of the foregoing  covenants and agreements shall
be  enforceable  by  Landlord  and by any  partner  of  Landlord  and  shall  be
applicable  to any actual or alleged  misrepresentation  or  nondisclosure  made
respecting this Lease or the Leased Premises or any factual or alleged  failure,
default or breach of any covenant or agreement  either  expressly or  implicitly
contained in this Lease or imposed by statue or at common law.

Landlord shall have no  obligation,  nor incur any liability  beyond  Landlord's
then equity interest if any, in the Property,  and Tenant shall look exclusively
to such equity  interest of  Landlord,  if any, in the  Property for payment and
discharge of any obligations  imposed upon Landlord  hereunder,  and Landlord is
hereby  released  and  relieved  of any other  obligations  hereunder  provided,
however,  that with respect to the prosecution and completion of Landlord's Work
Landlord's  liability  shall extend to  Landlord's  assets but not the assets of
Landlord's partners.

         12.5 TENANT'S WAIVER:  Landlord and Tenant agree that the provisions of
Article  12.3 above are  intended to  supersede  and replace the  provisions  of
California Civil Code Sections 1932(l),  1941 and 1942, and accordingly,  Tenant
hereby waives the provisions of California Civil Code Sections 1932(l), 1941 and
1942 and/or any similar or successor Law regarding  Tenant's  right to terminate
this Lease or to make  repairs and deduct the  expenses of such repairs from the
rent due under this Lease.

ARTICLE 13
GENERAL PROVISIONS

         13.1 TAXES ON TENANT'S  PROPERTY:  Tenant shall pay before  delinquency
any and all taxes,  assessments,  license fees, use fees, permit fees and public
charges of whatever  nature or description  levied,  assessed or imposed against
Tenant or Landlord by a governmental  agency arising out of, caused by reason of
or based upon  Tenant's  estate in this Lease,  Tenant's  ownership of property,
improvements  made by  Tenant  to the  Leased  Premises  or the  Outside  Areas,
improvements made by Landlord for Tenant's use within the Leased Premises or the
Outside Areas,  Tenant's use (or estimated use) of public facilities or services
or Tenant's consumption (or estimated consumption) of public utilities,  energy,
water or other resources. Upon demand by Landlord, Tenant shall furnish Landlord
with satisfactory  evidence of these payments.  If any such taxes,  assessments,
fees or public charges are levied against  Landlord,  Landlord's  property,  the
Building  or the  Property,  or if the  assessed  value of the  Building  or the
Property is increased by the inclusion therein of a value placed upon same, then
Landlord,  after  giving  written  notice  to  Tenant,  shall  have  the  right,
regardless of the validity thereof, to pay such taxes, assessment, fee or public
charge  and  bill  Tenant,  as  Additional  Rent,  the  amount  of  such  taxes,
assessment, fee or public charge so paid on Tenant's behalf. Tenant shall,

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<PAGE>

within ten days from the date it receives an invoice from Landlord setting forth
the amount of such taxes,  assessment,  fee or public  charge so levied,  pay to
Landlord,  as Additional Rent, the amount set forth in said invoice.  Failure by
Tenant  to pay the  amount  so  invoiced  within  said ten day  period  shall be
conclusively  deemed a default by Tenant under this Lease  following  notice and
expiration of the cure period  without cure as provided in Section 12.1A of this
Lease.  Tenant shall have the right,  and the  Landlord's  full  cooperation  if
Tenant is not then in default  under the terms of this  Lease,  to bring suit in
any court of competent  jurisdiction  to recover from the taxing  authority  the
amount of any such taxes, assessment, fee or public charge so paid.

         13.2 HOLDING OVER: This Lease shall terminate without further notice on
the Lease  Expiration  Date (as set forth in  Article  1). Any  holding  over by
Tenant after expiration of the Lease Term shall neither constitute a renewal nor
extension of this Lease nor give Tenant any rights in or to the Leased  Premises
except as  expressly  provided in this  Article.  Any such holding over shall be
deemed an unlawful detainer of the Leased Premises unless Landlord has consented
to same.  Any  such  holding  over to  which  Landlord  has  consented  shall be
construed to be a tenancy from month to month,  on the same terms and conditions
herein specified insofar as applicable,  except that the Base Monthly Rent shall
be increased to an amount equal to one hundred fifty percent of the Base Monthly
Rent payable during the last full month immediately preceding such holding over.

         13.3  SUBORDINATION TO MORTGAGES:  Landlord  represents and warrants to
Tenant  that  as of  the  Effective  Date  of  this  Lease,  this  Lease  is not
subordinate or subject to any underlying  ground leases,  mortgages and deeds of
trust.  If the lessor under any such ground lease or any lender holding any such
mortgage or deed of trust shall advise Landlord that it desires or requires this
Lease to be made prior and  superior  thereto,  then,  upon  written  request of
Landlord to Tenant,  Tenant shall promptly execute,  acknowledge and deliver any
and all documents or  instruments  which Landlord and such lessor or lender deem
necessary or desirable to make this Lease prior thereto.  Tenant hereby consents
to Landlord's  ground  leasing the land  underlying the Building or the Property
and/or  encumbering the Building or the Property as security for future loans on
such  terms as  Landlord  shall  desire,  all of  which  future  ground  leases,
mortgages or deeds of trust shall be subject to and  subordinate  to this Lease.
However,  if any lessor under any such future ground lease or any lender holding
such future mortgage or deed of trust shall desire or require that this Lease be
made subject to and subordinate to such future ground lease, mortgage or deed of
trust,  then Tenant agrees,  within ten days after  Landlord's  written  request
therefor, to execute,  acknowledge and deliver to Landlord any and all documents
or  instruments  requested  by  Landlord  or by such  lessor or lender as may be
necessary  or proper to assure the  subordination  of this Lease to such  future
ground  lease,  mortgage  or deed of  trust,  but only if such  lessor or lender
agrees to recognize  Tenant's  rights under this Lease and agrees not to disturb
Tenant's  quiet  possession  of the Leased  Premises so long as Tenant is not in
default under this Lease.

         13.4 TENANT'S ATTORNMENT UPON FORECLOSURE:  Tenant shall, upon request,
attorn (i) to any  purchaser of the Building or the Property at any  foreclosure
sale or private sale conducted pursuant to any security  instrument  encumbering
the Building or the Property,  (ii) to any grantee or  transferee  designated in
any deed given in lieu of foreclosure of any security  interest  encumbering the
Building or the  Property,  or (iii) to the lessor under any  underlying  ground
lease of the land  underlying  the Building or the Property,  should such ground
lease be terminated;  provided that such purchaser, grantee or lessor recognizes
Tenant's rights under this Lease.

         13.5 MORTGAGEE  PROTECTION:  In the event of any default on the part of
Landlord,  Tenant  will give notice by the  methods  provided  for in the Notice
provision  of this Lease to any  Lender or lessor  under any  underlying  ground
lease who shall have requested,  in writing,  to Tenant that it be provided with
such  notice,  and  Tenant  shall  offer  such  Lender  or  lessor a  reasonable
opportunity  to cure the default,  including  time to obtain  possession  of the
Leased  Premises by power of sale or judicial  foreclosure or other  appropriate
legal proceedings if reasonably necessary to effect a cure.

         13.6  ESTOPPEL  CERTIFICATES:  Tenant  will,  following  any request by
Landlord,  promptly execute and deliver to Landlord an estoppel  certificate (i)
certifying  that this Lease is unmodified  and in full force and effect,  or, if
modified,  stating  the nature of such  modification  and  certifying  that this
Lease,  as so  modified,  is in full force and effect,  (ii) stating the date to
which  the  rent  and  other  charges  are  paid  in  advance,   if  any,  (iii)
acknowledging that there are not, to Tenant's knowledge, any uncured defaults on
the part of Landlord hereunder,  or specifying such defaults if any are claimed,
and (iv) certifying such other information about this Lease as may be reasonably
requested by

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<PAGE>

Landlord,  its Lender or  prospective  lenders,  investor  or  purchaser  of the
Building or the Property.  Tenant's failure to execute and deliver such estoppel
certificate  within  ten  days  after  Landlord's  request  therefor  shall be a
material  default by Tenant under this Lease, and Landlord shall have all of the
rights and remedies  available to Landlord as Landlord  would  otherwise have in
the case of any  other  material  default  by  Tenant,  including  the  right to
terminate this Lease and sue for damages  proximately  caused thereby,  it being
agreed and  understood  by Tenant  that  Tenant's  failure  to so  deliver  such
estoppel certificate in a timely manner could result in Landlord being unable to
perform committed obligations to other third parties which were made by Landlord
in reliance  upon this  covenant of Tenant.  Landlord and Tenant intend that any
statement delivered pursuant to this Article may be relied upon by any Lender or
purchaser or prospective Lender or purchaser of the Building,  the Property,  or
any interest herein. Notwithstanding anything to the contrary in Section 13.6 of
the Lease Form, Landlord shall, upon the same terms and conditions applicable to
Tenant,  give an  estoppel  certificate  to Tenant for the benefit of any lender
taking a security  interest in the Lease or for the  benefit of a  purchaser  of
Tenant's assets.

         13.7 TENANT'S FINANCIAL INFORMATION:  Tenant shall, within ten business
days after  Landlord's  request therefor deliver to Landlord a copy of a current
financial  statement  and any such other  information  reasonably  requested  by
Landlord regarding Tenant's financial  condition.  Landlord shall be entitled to
disclose such financial  statements or other  information to its Lender,  to any
present  or  prospective  principal  of or  investor  in  Landlord,  or  to  any
prospective  Lender or  purchaser of the  Building,  the Property or any portion
thereof or interest therein.  Any such financial  statement or other information
which is marked  "confidential" or "company secrets" (or is otherwise  similarly
marked by Tenant) shall be  confidential  and shall not be disclosed by Landlord
to any third party except as specifically  provided in this Article,  unless the
same becomes a part of the public domain without the fault of Landlord.

         13.8  TRANSFER BY  LANDLORD:  Landlord and its  successors  in interest
shall have the right to transfer their  interest in the Building,  the Property,
or any portion thereof at any time and to any person or entity.  In the event of
any such transfer,  the Landlord originally named herein (and in the case of any
subsequent transfer, the transferor),  from the date of such transfer, (i) shall
be automatically  relieved,  without any further act by any person or entity, of
all liability for the performance of the  obligations of the Landlord  hereunder
which may accrue  after the date of such  transfer and (ii) shall be relieved of
all liability for the performance of the  obligations of the Landlord  hereunder
which have  accrued  before the date of  transfer  if its  transferee  agrees to
assume and perform all such prior obligations of the Landlord hereunder.  Tenant
shall attorn to any such  transferee.  After the date of any such transfer,  the
term "Landlord" as used herein shall mean the transferee of such interest in the
Building or the Property.

         13.9 FORCE MAJEURE:  The  obligations of each of the parties under this
Lease (other than the obligations to pay money) shall be temporarily  excused if
such party is prevented or delayed in  performing  such  obligation by reason of
any strikes,  lockouts or labor disputes;  inability to obtain labor, materials,
fuels   or   reasonable   substitutes   therefor;   governmental   restrictions,
regulations,  controls, action or inaction; civil commotion;  inclement weather,
fire or other acts of God; or other causes (except  financial  inability) beyond
the  reasonable  control of the party  obligated to perform  (including  acts or
omissions  of the  other  party)  for a period  equal to the  period of any such
prevention,  delay or stoppage.  In the event of a Force  Majeure  condition the
party  exercising  Force Majeure  rights shall endeavor to provide notice of the
same to the other party,  provided however, the failure to do so shall not limit
or waive the parties rights to assert the Force Majeure event.

         13.10  NOTICES:  Any notice  required or desired to be given by a party
regarding this Lease shall be in writing and shall be personally  served,  or in
lieu of personal service may be given by (i) delivery by Federal Express, United
Parcel Service or similar commercial  carrier,  (ii) electronic fax transmission
(except for Notices of Default),  or (iii)  depositing such notice in the United
States mail, postage prepaid, addressed to the other party as follows:

         A. If addressed to Landlord, to Landlord at its Address for Notices (as
set forth in Article 1).

         B. If addressed to Tenant, to Tenant at its Address for Notices (as set
forth in Article  1). In  addition,  any  Notice of  Default to Tenant  shall be
copied to Mr. Robert Gunderson,  Gunderson,  Dettmer & Stough,  155 Constitution
Avenue, Menlo Park,  California 94025. It is agreed,  however, that service upon
Mr.  Gunderson  need only be  performed  by one of the methods set forth in this
paragraph  13.10 and need not be by any  statutorially  prescribed  methods that
might apply to Tenant.

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<PAGE>

                  Any notice given by mail shall be deemed  given on  completion
of the second business day after deposit in the U.S. Mail. Any notice  delivered
by  commercial  carrier  or by  fax  shall  be  deemed  given  on  the  date  of
confirmation  of  delivery by the carrier or by  electronic  confirmation.  Each
party may, by written  notice to the other in the manner  aforesaid,  change the
address to which notices addressed to it shall thereafter be mailed.


         13.11  ATTORNEYS  FEES:  In the event any party shall bring any action,
arbitration proceeding or legal proceeding alleging a breach of any provision of
this Lease,  to recover rent, to terminate this Lease,  or to enforce,  protect,
determine  or  establish  any term or covenant of this Lease or rights or duties
hereunder of either  party,  the  prevailing  party shall be entitled to recover
from the  non-prevailing  party as a part of such action or proceeding,  or in a
separate action for that purpose brought within one year from the  determination
of such proceeding, reasonable attorneys' fees, expert witness fees, court costs
and other  reasonable  expenses  incurred by the prevailing  party. In the event
that  Landlord  shall be required to retain  counsel to enforce any provision of
this  Lease,  and if Tenant  shall  thereafter  cure (or  desire  to cure)  such
default,  Landlord shall be conclusively  deemed the prevailing party and Tenant
shall pay to Landlord all attorneys' fees,  expert witness fees, court costs and
other reasonable  expenses so incurred by Landlord promptly upon demand provided
that Landlord has first  notified  Tenant in writing that Landlord was retaining
counsel in connection with such matter prior to Landlord's retention of counsel.
Landlord may enforce this  provision by either (i) requiring  Tenant to pay such
fees and costs as a condition to curing its default or (ii)  bringing a separate
action to enforce  such  payment,  it being  agreed by and between  Landlord and
Tenant  that  Tenant's  failure  to pay such fees and costs  upon  demand  shall
constitute  a breach of this Lease in the same  manner as a failure by Tenant to
pay the Base Monthly  Rent,  giving  Landlord the same rights and remedies as if
Tenant failed to pay the Base Monthly Rent.

         13.12  DEFINITIONS:  Any term  that is given a special  meaning  by any
provision in this Lease shall, unless otherwise  specifically  stated, have such
meaning  whenever used in this Lease or in any Addenda or amendment  hereto.  In
addition to the terms defined in Article 1, the  following  terms shall have the
following meanings:  Notwithstanding anything to the contrary in Subsection E of
Section 13.12 of the Lease Form:

A. The term "Property Maintenance Costs" shall not include any of the following:

         (i) The cost to correct code violations in work constructed by Landlord
existing as of the Lease Commencement Date;

         (ii)  The  cost  to  correct  defects  in  design  or  construction  of
structural components of the Building;

         (iii)  The  cost to  correct  defects  in  design  or  construction  of
nonstructural  components  of  the  Building  or  structural  and  nonstructural
components of other improvements located on the Property,  if such defect is (i)
discovered  within  two (2)  years  after the  Lease  Commencement  Date or (ii)
discovered  more than two (2) years  after the Lease  Commencement  Date if such
defect is  material  and could not  reasonably  have been  discovered  by Tenant
within two (2) years after the Lease Commencement Date;

         (iv) The cost of  repairs  necessitated  by the  active  negligence  or
misconduct of Landlord, its agents, employees or contractors;

         (v) The cost of repairs  which are covered by  insurance or required to
be covered by insurance under the Lease; and

         (vi) Any cost or expense  related to or  incurred  in  connection  with
hazardous  materials  unless Landlord incurs such cost or expense as a result of
Tenant's  failure to comply  with its  obligations  under  Paragraph  16 of this
Addendum.

B. With  respect to any single item or component  of Property  Maintenance  Cost
under  Subparagraph (E) which exceeds $50,000 and is incurred with respect to an
item with a useful  life not less than five (5) years and would be  defined as a
capital expenditure under generally accepted accounting  principles,  the amount
in excess of $50,000.00

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<PAGE>

shall be amortized  in equal  monthly  installments  over the useful life of the
improvement  with  interest at Wells Fargo Bank Prime Plus Two, and Tenant shall
pay such amortized  amount on a monthly  basis.  The amount up to the $50,000.00
sum shall be paid by Tenant without amortization.

         C. REAL PROPERTY TAXES:  The term "Real Property Tax" or "Real Property
Taxes" shall each mean (i) all taxes,  assessments,  levies and other charges of
any kind or nature  whatsoever,  general and special,  foreseen  and  unforeseen
(including  all  installments  of  principal  and  interest  required to pay any
general  or  special  assessments  for  public  improvements  and any  increases
resulting  from  reassessments   caused  by  any  change  in  ownership  or  new
construction),    now   or   hereafter    imposed   by   any   governmental   or
quasi-governmental  authority or special  district having the direct or indirect
power to tax or levy  assessments,  which are levied or  assessed  for  whatever
reason  against the  Project or any  portion  thereof,  or  Landlord's  interest
herein,  or the fixtures,  equipment  and other  property of Landlord that is an
integral  part of the Project and located  thereon,  or  Landlord's  business of
owning, leasing or managing the Project or the gross receipts, income or rentals
from the Project;  (ii) all charges,  levies or fees imposed by any governmental
authority  against  Landlord  by reason of or based upon the use of or number of
parking  spaces  within the  Project,  the amount of public  services  or public
utilities  used or consumed (e.g.  water,  gas,  electricity,  sewage or surface
water disposal) at the Project, the number of persons employed by tenants of the
Project,  the size  (whether  measured  in area,  volume,  number of  tenants or
whatever)  or the  value of the  Project,  or the type of use or uses  conducted
within the Project;  and (iii) all costs and fees  (including  attorneys'  fees)
incurred by Landlord in contesting any Real Property Tax and in negotiating with
public authorities as to any Real Property Tax. If, at any time during the Lease
Term,  the taxation or assessment of the Project  prevailing as of the Effective
Date of this Lease  shall be altered  so that in lieu of or in  addition  to any
Real Property Tax described above there shall be levied,  or imposed (whether by
reason of a change in the method of  taxation or  assessment,  creation of a new
tax or charge, or any other cause) an alternate,  substitute,  or additional tax
or charge (i) on the value,  size, use or occupancy of the Project or Landlord's
interest therein or (ii) on or measured by the gross receipts, income or rentals
from the Project, or on Landlord's  business of owning,  leasing or managing the
Project or (iii)  computed in any manner with  respect to the  operation  of the
Project,  then any such tax or charge,  however  designated,  shall be  included
within the meaning of the terms "Real Property Tax" or "Real Property Taxes" for
purposes of this Lease.  If any Real  Property Tax is partly based upon property
or rents unrelated to the Project, then only that part of such Real Property Tax
that is fairly  allocable to the Project shall be included within the meaning of
the terms "Real  Property Tax" or "Real  Property  Taxes."  Notwithstanding  the
foregoing,  the terms "Real  Property  Tax" or "Real  Property  Taxes" shall not
include estate,  inheritance,  transfer,  gift or franchise taxes of Landlord or
the federal or state income tax imposed on  Landlord's  income from all sources.
Notwithstanding  the above,  Tenant shall only be liable for Real Property taxes
which relate to the Lease Term.

         D. LANDLORD'S  INSURANCE COSTS:  The term "Landlord's  Insurance Costs"
shall mean the costs to Landlord to carry and  maintain the policies of fire and
property  damage  insurance  including  for the  Building  and the  Property and
Commercial General Liability insurance required, or permitted,  to be carried by
Landlord  pursuant to Article 9,  together with any  deductible  amounts paid by
Landlord  upon the  occurrence  of any  insured  casualty  or loss and which are
recoverable by Landlord from Tenant pursuant to one or more other  provisions of
this Lease.

         E. PROPERTY  MAINTENANCE  COSTS: The term "Property  Maintenance Costs"
shall mean all costs and expenses  (except  Landlord's  Insurance Costs and Real
Property  Taxes)  paid  or  incurred  by  Landlord  in  protecting,   operating,
maintaining,  repairing  and  preserving  the  Property  and all parts  thereof,
including without limitation,  (i) professional management fees equal to two (2)
percent of the annualized Base Monthly Rent, (ii) the amortizing  portion of any
costs  incurred by Landlord in the making of any  modifications,  alterations or
improvements  required by any governmental  authority as set forth in Article 6,
which are so amortized  during the Lease Term,  (iii) such other costs as may be
paid or incurred  with respect to  operating,  maintaining  and  preserving  the
Property,  such as  repairing  and  resurfacing  the  exterior  surfaces  of the
buildings  (including roofs),  repairing and resurfacing paved areas,  repairing
structural parts of the buildings,  cleaning,  maintaining,  or replacing,  when
necessary  electrical,  plumbing,  heating,  ventilating  and  air  conditioning
systems  serving the buildings or major  components  thereto and (iv) subject to
Paragraph 13.12 B above,  replacement of any portion of the Property that can no
longer reasonably be repaired or maintained.

          F. READY FOR OCCUPANCY:  The term "Ready for Occupancy" shall mean the
date upon which (i) the Leased Premises are available for Tenant's  occupancy in
a broom clean  condition  and (ii) the  improvements,  if any,

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to be made to the  Leased  Premises  by  Landlord  as a  condition  to  Tenant's
obligation to accept  possession of the Leased Premises have been  substantially
completed in accordance with approved plans and  specifications,  if applicable,
and the appropriate  governmental  building  department  (i.e. the City building
department,  if the Property is located  within a City,  or otherwise the County
building  department)  shall have approved the  construction  of improvements as
complete or is willing to so approve the  construction  of the  improvements  as
complete  subject only to compliance  with  specified  conditions  which are the
responsibility  of Tenant to satisfy  or is  willing  to allow  Tenant to occupy
subject to its receiving assurances that specified work will be completed.

         G. PROPERTY OPERATING EXPENSES:  The term "Property Operating Expenses"
shall mean and include all Real Property  Taxes,  plus all Landlord's  Insurance
Costs, plus all Property Maintenance Costs.

         H.  LAW:  The term  "Law"  shall  mean any  judicial  decision  and any
statute, constitution,  ordinance, resolution,  regulation, rule, administrative
order, or other requirement of any municipal,  county,  state, federal, or other
governmental  agency or authority having  jurisdiction  over the parties to this
Lease,  the Leased  Premises,  the Building or the  Property,  or any of them in
effect  either at the  Effective  Date of this  Lease or at any time  during the
Lease Term, including,  without limitation, any regulation,  order, or policy of
any  quasi-official  entity or body (e.g. a board of fire  examiners or a public
utility or special district).

         I. LENDER: The term "Lender" shall mean the holder of any Note or other
evidence of indebtedness secured by the Property or any portion thereof.

         J. PRIVATE RESTRICTIONS: The term "Private Restrictions" shall mean all
recorded covenants, conditions and restrictions,  private agreements, easements,
and any other recorded  instruments  affecting the use of the Property,  as they
may exist from time to time.

         K. RENT: The term "rent" shall mean  collectively Base Monthly Rent and
all Additional Rent.

         13.13 GENERAL WAIVERS: One party's consent to or approval of any act by
the other party  requiring  the first party's  consent or approval  shall not be
deemed to waive or render  unnecessary  the first party's consent to or approval
of any  subsequent  similar act by the other party.  No waiver of any  provision
hereof or any  breach  of any  provision  hereof  shall be  effective  unless in
writing and signed by the waiving party.  The receipt by Landlord of any rent or
payment with or without  knowledge of the breach of any other  provision  hereof
shall not be deemed a waiver of any such breach.  No waiver of any  provision of
this Lease shall be deemed a continuing  waiver unless such waiver  specifically
states so in writing  and is signed by both  Landlord  and  Tenant.  No delay or
omission in the  exercise of any right or remedy  accruing to either  party upon
any breach by the other party under this Lease shall impair such right or remedy
or be  construed  as a  waiver  of any such  breach  theretofore  or  thereafter
occurring.  The waiver by either  party of any breach of any  provision  of this
Lease shall not be deemed to be a waiver of any subsequent breach of the same or
any other provisions herein contained.

         13.14  MISCELLANEOUS:  Should any  provision  of this Lease prove to be
invalid or illegal, such invalidity or illegality shall in no way affect, impair
or invalidate any other provision  hereof,  and such remaining  provisions shall
remain in full force and  effect.  Time is of the  essence  with  respect to the
performance  of every  provision of this Lease in which time of performance is a
factor.  Any copy of this Lease which is executed by the parties shall be deemed
an  original  for all  purposes.  This Lease  shall,  subject to the  provisions
regarding  assignment,  apply  to and  bind the  respective  heirs,  successors,
executors,  administrators  and assigns of Landlord and Tenant. The term "party"
shall mean Landlord or Tenant as the context implies. If Tenant consists of more
than one  person or entity,  then all  members  of Tenant  shall be jointly  and
severally  liable  hereunder.  This Lease  shall be  construed  and  enforced in
accordance  with the Laws of the State in which the Leased Premises are located.
The  language  in all parts of this Lease shall in all cases be  construed  as a
whole  according to its fair  meaning,  and not  strictly for or against  either
Landlord or Tenant. The captions used in this Lease are for convenience only and
shall not be considered in the construction or  interpretation  of any provision
hereof. When the context of this Lease requires,  the neuter gender includes the
masculine,  the feminine, a partnership or corporation or joint venture, and the
singular includes the plural. The terms "must",  shall",  will", and "agree" are
mandatory.  The  term  "may"  is  permissive.  When a party  is  required  to do
something  by this Lease,  it shall do so at its sole cost and  expense  without
right of reimbursement from the other party unless specific provision is made

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therefor.  Where Tenant is obligated  not to perform any act or is not permitted
to perform any act,  Tenant is also obligated to restrain any others  reasonably
within its control, including agents, invitees, contractors,  subcontractors and
employees,  from performing  said act.  Landlord shall not become or be deemed a
partner or a join venture with Tenant by reason of any of the provisions of this
Lease.

ARTICLE 14
CORPORATE AUTHORITY,
BROKERS AND ENTIRE AGREEMENT

         14.1 CORPORATE AUTHORITY:  If Tenant is a corporation.  each individual
executing this Lease on behalf of said corporation  represents and warrants that
Tenant is validly  formed  and duly  authorized  and  existing,  that  Tenant is
qualified to do business in the State in which the Leased  Premises are located,
that  Tenant has the full right and legal  authority  to enter into this  Lease,
that he or she is duly authorized to execute and deliver this Lease on behalf of
Tenant in accordance with the bylaws and/or a board of directors'  resolution of
Tenant.  Tenant shall, within thirty days after execution of this Lease, deliver
to  Landlord  a  certified  copy of the  resolution  of its  board of  directors
authorizing or ratifying the execution of this Lease,  and if Tenant fails to do
so,  Landlord  at its  sole  election  may  elect  to (i)  extend  the  Intended
Commencement  Date by such number of days that Tenant  shall have  delayed in so
delivering such corporate resolution to Landlord or (ii) terminate this Lease.

         14.2  BROKERAGE  COMMISSIONS:  Tenant  warrants that it has not had any
dealings  with  any  real  estate  broker(s),  leasing  agent(s),  finder(s)  or
salesmen,  other than the  Brokers  (as named in Article I) with  respect to the
lease by it of the Leased  Premises  pursuant  to this  Lease,  and that it will
indemnify,  defend with competent  counsel,  and hold Landlord harmless from any
liability  for the payment of any real  estate  brokerage  commissions,  leasing
commissions or finder's fees claimed by any other real estate broker(s), leasing
agent(s),  finder(s),  or  salesmen to be earned or due and payable by reason of
Tenant's  agreement or promise implied or otherwise) to pay (or to have Landlord
pay) such a  commission  or  finder's  fee by reason of its  leasing  the Leased
Premises pursuant to this Lease.

         14.3 ENTIRE  AGREEMENT:  This Lease,  the  Exhibits  (as  described  in
Article 1) and the  Addenda (as  described  in Article 1),  which  Exhibits  and
Addenda  are by  this  reference  incorporated  herein,  constitute  the  entire
agreement between the parties, and there are no other agreements, understandings
or representations  between the parties relating to the lease by Landlord of the
Leased Premises to Tenant,  except as expressed herein.  No subsequent  changes,
modifications  or  additions  to this Lease  shall be binding  upon the  parties
unless in writing and signed by both Landlord and Tenant.

         14.4  LANDLORD'S  REPRESENTATIONS:  Tenant  acknowledges  that  neither
Landlord nor any of its agents made any representation or warranties  respecting
the Project,  the Building or the Leased  Premises,  upon which Tenant relied in
entering  into this  Lease,  which are not  expressly  set forth in this  Lease.
Tenant further acknowledges that neither Landlord nor any of its agents made any
representations  as to (i) whether the Leased  Premises may be used for Tenant's
intended use under existing Law, or (ii) the  suitability of the Leased Premises
for the conduct of Tenant's  business,  or (iii) the exact square footage of the
Leased  Premises,  and that Tenant  relied  solely  upon its own  investigations
respecting said matters.  Tenant  expressly waives any and all claims for damage
by reason of any statement, representation, warranty, promise or other agreement
of Landlord or  Landlord's  agent(s),  if any, not contained in this Lease or in
any Addenda hereto.

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         IN WITNESS WHEREOF,  Landlord and Tenant have executed this Lease as of
the respective dates below set forth with the intent to be legally bound thereby
as of the Effective Date of this Lease first above set forth.

AS LANDLORD:                                         AS TENANT:

RENCO INVESTMENT COMPANY, a                         AVANT! CORPORATION., a
California general partnership                      Delaware corporation


By: _____________________                           By: _____________________

Title: __________________                           Title: __________________

By: _____________________                           By: _____________________

Title: __________________                           Title: __________________

Dated: __________________                           Date: ___________________


If Tenant is a CORPORATION,  the authorized  officers must sign on behalf of the
corporation and indicate the capacity in which they are signing. This Lease must
be executed by the chairman of the board,  president or vice-president,  and the
secretary,  assistant  secretary,  the  chief  financial  officer  or  assistant
treasurer,  unless the bylaws or a resolution  of the board of  directors  shall
otherwise provide, in which event a certified copy, of the bylaws or a certified
copy of the resolution, as the case may be, must be attached to this Lease.

Single Tenant Lease

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FIRST ADDENDUM TO LEASE
Avant! Corporation

THIS FIRST ADDENDUM TO LEASE ("The Addendum") is dated for reference purposes as
of February 24, 1997, and is made between RENCO INVESTMENT COMPANY, a California
general partnership ("Landlord") and AVANT! CORPORATION., a Delaware corporation
("Tenant")  to be a part of that  certain  Industrial  Space  Lease of even date
herewith between  Landlord and Tenant (herein the "Lease"),  with respect to the
building  commonly  known as Renco ____ (the  "Building").  Terms defined in the
Lease Form shall have the same  meaning  when used  herein  unless  specifically
defined  otherwise  herein.  Landlord  and Tenant agree that the Lease is hereby
modified and supplemented as follows:


The following provisions are hereby added to the text of the Lease Form.

13.12 Definitions:

J. Buildings Occupied By Tenant:  Tenant has entered into a sublease with Cirrus
Logic, Inc. to occupy a building identified as Renco 53. Tenant has also entered
into leases with Landlord to occupy buildings  identified as Renco 48, Renco 54,
and Renco 55, and Tenant has entered into a lease with  Landlord to occupy Renco
53 following the  expiration of the Cirrus Logic  sublease.  All four  buildings
(one of which is currently in existence and three or which shall be  constructed
pursuant to the terms of the respective leases therefor) are/shall be located in
Fremont,  California  and  are/shall be adjacent to each other.  For purposes of
this Lease the  buildings  are  identified  as follows:  Renco 53, 46875 Bayside
Parkway,  parcel map 6925, parcel 5; Renco 54, 46859 Bayside Parkway, parcel map
6925,  parcel 4; Renco 55, 46889  Bayside  Parkway,  parcel map 6925,  parcel 3,
Renco 48, parcel map 6925, parcel 2.

15. Cross  Default:  Landlord and Tenant have entered into leases for  buildings
identified as Renco 53, Renco 54, Renco 55, and Renco 48. The leases provide for
Tenant's  occupancy  of said  buildings.  A default by Tenant (as defined in the
Article  entitled  "Default and Remedies") under either or any of such leases or
under this Lease shall be  considered to be a default under all of the leases as
well as this Lease. In the event of a default by Tenant under any of the leases,
or this Lease,  Landlord may pursue the remedies permitted by law or pursuant to
the terms of any, either or all of such leases, as if Tenant had defaulted under
any one or all of such  leases.  If Tenant  and  Landlord  enter  into any other
Leases,  the immediately  preceding cross default  provisions shall apply to all
such leases.

16. Hazardous Materials: Notwithstanding anything to the contrary in the Lease:

         Landlord  represents that, to the best of its knowledge,  any handling,
transportation,  storage,  treatment or use of Hazardous  Materials  (as defined
below) that has occurred on the Property  prior to the Lease  Commencement  Date
has been done in compliance  with all laws and that the Property is, to the best
of Landlord's  knowledge,  presently in compliance with all laws which relate to
Hazardous Materials.

         Tenant,  at its sole cost,  shall comply with all Laws  relating to the
storage,  use and disposal of hazardous,  toxic or radioactive matter including,
but not limited to, those materials identified in Section 66680 through 66685 of
Title 22 of the California  Administrative  Code, Division 4, Chapter 30 ("Title
22")  as  they  may be  amended  from  time  to  time  (collectively  "Hazardous
Materials");  provided,  however,  that  Tenant  shall  not be  responsible  for
contamination of the Leased Premises by Hazardous  Materials  existing as of the
Lease Commencement Date (unless caused by Tenant) or by any release of Hazardous
Materials occurring off-site on adjacent or neighboring property (but not caused
by Tenant) which migrates onto the Leased Premises. If Tenant does store, use or
dispose of any  Hazardous  Materials  other than small  amounts of cleaning  and
janitorial items used in the ordinary course of Tenant's business,  Tenant shall
(a) notify  Landlord  in  writing  at least ten (10) days  prior to their  first
appearance on the Leased Premises and (b) provide  periodically (at least each 6
months) a written description of such materials together with a statement of the
quantities  that shall be so stored or used upon the Premises and shall  provide
to Landlord copies of all material safety data sheets that Tenant is required to
provide to applicable agencies. Tenant shall be solely responsible for and shall
defend,  indemnify,  and hold Landlord and its agents  harmless from and against
all claims, costs and liabilities,  including attorneys' fees and costs, arising
out of or in connection with Tenant's storage, use and/or disposal of Hazardous

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Materials.  If the presence of Hazardous Materials on the Leased Premises caused
or permitted by Tenant results in  contamination  or  deterioration  of water or
soil then Tenant shall  promptly  take any and all action  necessary to clean up
such  contamination.  At any time  prior to the  expiration  of the Lease  Term,
Tenant shall have the right to conduct  appropriate  tests of water and soil and
to  deliver  to  Landlord  the  results  of such  tests to  demonstrate  that no
contamination  has occurred as a result of Tenant's use of the Leased  Premises.
Tenant shall further be solely responsible for, and shall defend, indemnify, and
hold  Landlord and its agents  harmless  from and against all claims,  costs and
liabilities,  including  attorneys'  fees  and  costs,  arising  out  of  or  in
connection with any removal, cleanup and restoration work and materials required
hereunder  to return the Leased  Premises  and any other  property  of  whatever
nature to their  condition  existing  prior to the  appearance  of the Hazardous
Materials.  Tenant's  obligation  hereunder shall survive the termination of the
Lease.

17. Limitations on Liability: Intentionally Omitted.

18.  Option To Renew:  Landlord  hereby  grants to Tenant an option to renew the
Lease for two (2) additional  terms of five (5) years each (the "Renewal Terms")
with the  first  Renewal  Term  commencing  on the  Lease  Expiration  Date (the
"Renewal  Commencement Date") and ending five (5) years thereafter (the "Renewal
Expiration  Date") and the second  Renewal Term  commencing on the expiration of
the first Renewal Term ( the "Second Renewal Commencement Date") and ending five
(5) years thereafter (the "Second Renewal Expiration Date"). Tenant shall not be
eligible to exercise the option for the second Renewal Term if it did not timely
exercise the option for the first Renewal Term. Each lease extension shall be on
the same terms and conditions as set forth in the Lease, except:

                  A. That the rental for the Leased  Premises during the Renewal
Term shall be as set forth below, and

                  B. That the  Security  Deposit  shall be increased to the Base
Monthly Rent determined below (the "Increased Security Deposit Amount").

         18.1 Method of Exercise:  Provided  that Tenant shall not be in default
under the Lease as of the exercise of the  applicable  option to extend the term
of the Lease,  Tenant shall notify Landlord of Tenant's exercise of its right to
renew the  Lease  for the  applicable  Renewal  Term only by giving to  Landlord
written  notice  not  sooner  than  twelve  (12)  months  prior  to the  Renewal
Commencement  Date (or the Second Renewal  Commencement Date as appropriate) and
not later than seven (7) months prior to the Renewal  Commencement  Date (or the
Second  Renewal  Commencement  Date as  appropriate)  (time is  expressly of the
essence to  Landlord).  Any  attempted  exercise  of this Option made other than
within the time period  stated or in the manner  stated  shall be void and of no
force or effect.

         18.2  Terms of  Renewal:  If Tenant  shall  have  properly  and  timely
exercised  its right to extend the term of the Lease and  provided  that  Tenant
shall  not have  been in  default  under  the  terms of the Lease as of the each
Renewal  Commencement  Date, the term of the Lease shall be so extended for such
Renewal Term on the same terms and conditions contained in the Lease;  provided,
however, the Base Monthly Rent for each month of the first thirty (30) months of
each  Renewal  Term shall be  calculated  as follows:  The new Base Monthly Rent
shall be the  greater  of:  (i) the Base  Monthly  Rent  being paid by Tenant to
Landlord  during the final full  month of the final  year of the  initial  Lease
Term, or (ii) the Then Monthly Market Rental Rate for the Leased  Premises as of
the date seven (7) months prior to the  commencement  of such renewal term.  The
Base Monthly  Rent for the Second  Renewal Term shall be the greater of: (i) the
Base  Monthly  Rent  being  paid  by  Tenant  to  Landlord  for the  full  month
immediately  prior to the  commencement  of such renewal  term, or (ii) the Then
Monthly  Market  Rental  Rate for the Leased  Premises  as of the date seven (7)
months prior to the commencement of such renewal term.

         18.3 Monthly  Market Rental Rate:  For purposes of this Option to Renew
Lease,  the term "Then Monthly Market Rental Rate" shall be determined by mutual
agreement  between Landlord and Tenant or, in the event such agreement cannot be
made  within  ten (10)  days  from the date  Tenant  shall  have  exercised  the
applicable  Option,  Landlord  and  Tenant  shall  each  appoint  a real  estate
appraiser with at least five (5) years full-time commercial/industrial appraisal
experience  in Santa Clara  County to  appraise  and  determine  the fair market
monthly rental rate the Leased  Premises,  in their then existing  condition for
the highest and best use the Premises could be leased for, on the same terms and
conditions set forth in the Lease, to a qualified renewal tenant ready,  willing
and able to lease the Leased  Premises for a term equal to the Renewal  Term. If
either party does not appoint an appraiser within ten (10) days after the other

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party has given  notice of the name of its  appraiser,  the other party can then
apply to the  President  of the Santa  Clara  County  Real  Estate  Board or the
presiding  Judge of the  Superior  Court of that County for the  selection  of a
second  appraiser who meets the  qualifications  stated above. The failing party
shall bear the cost of appointing the second  appraiser and of paying the second
appraiser's  fee. The two appraisers shall attempt to establish the Then Monthly
Market Rental Rate for the Leased Premises.  If the two appraisers are unable to
agree on the Then Monthly Market Rental Rate for the Leased  Premises within ten
(10) days after the second  appraiser has been  selected or appointed,  then the
two  appraisers   shall  attempt  to  select  a  third  appraiser   meeting  the
qualifications stated above. If they fail to agree on a third appraiser,  either
party can follow the above  procedure  for having an appraiser  appointed by the
Real Estate Board or a judiciary.  Each of the parties shall bear one-half (1/2)
of the  cost  of  appointing  the  third  appraiser  and  of  paying  the  third
appraiser's  fee.  Unless  the  three  appraisers  are able to agree on the Then
Monthly  Market Rental Rate for the Leased  Premises  within ten (10) days after
the selection or appointment of the third appraiser,  the two appraisal  amounts
being  calculated most closely  together,  after having  discarded the appraisal
amount which most greatly varies from the other two appraisal amounts,  shall be
added  together  then divided by two (2). The  resulting  rental amount shall be
defined as the Then Monthly Market Rental Rate for the Leased Premises. The Base
Monthly Rent for each Renewal Term shall include  rental  increases each year of
the term if such increases are appropriate under market conditions. In no event,
however,  shall the resulting  Then Monthly  Market Rental Rate be less than the
Base Monthly Rent paid during the final full month of the initial Lease Term. In
no event,  however,  shall the resulting  Then Market Rental Rate for the second
Renewal Term be less than the Base Monthly Rent paid during the final full month
of the first Renewal Term.

         18.4 CPI Rental  Increase:  The Base  Monthly Rent shall be adjusted at
the end of the thirtieth  (30th) month of each Renewal Term by  multiplying  the
Base  Monthly Rent for the  thirtieth  (30th) month of such renewal term times a
fraction  the  numerator of which shall be the  Consumer  Price Index  published
immediately  prior to the  thirtieth  (30th)  month of such Renewal Term and the
denominator  of which shall be the Consumer  Price Index  published  immediately
prior to the first (1st) month of such Renewal Term. In no event, however, shall
the Base  Monthly  Rent for the last thirty (30) months of each  Renewal Term be
less than the Base Monthly Rent for the first thirty (30) months of such Renewal
Term.

                  A. For  purposes  of this  Option,  the term  "Consumer  Price
Index" shall mean the Consumer Price Index, All Urban  Consumers,  Subgroup "All
Items", for the San Francisco-Oakland-San  Jose Area (1982-1984=100),  now being
published by the United States Department of Labor,  Bureau of Labor Statistics.
If the  Consumer  Price  Index is changed so that the base year is altered  from
that used as of the Lease Commencement Date, then the Consumer Price Index shall
be converted in accordance  with the conversion  factor  published by the United
States  Department  of Labor,  Bureau of Labor  Statistics,  to obtain  the same
result that would have been obtained had the base year not been  changed.  If no
conversion  factor is  available,  or if the  Consumer  Price Index is otherwise
changed,  revised or discontinued for any reason,  there shall be substituted in
lieu thereof and the term "Consumer Price Index" shall  thereafter  refer to the
most nearly  comparable  official  price index of the United  States  Government
reasonably  designated  by  Landlord in order to obtain  substantially  the same
result for any  adjustment  required by this Option as would have been  obtained
had the original Consumer Price Index not been changed, revised or discontinued.

         18.5  One  Tenant:  It  is  landlord's  intention  that  the  buildings
identified  as Renco 53,  Renco  54,  and Renco 55 be  occupied  by one  tenant.
Notwithstanding  anything to the contrary  contained above,  Tenant shall not be
entitled to exercise  any option to extend the leases for either Renco 53, Renco
54, and/or Renco 55 unless Tenant  simultaneously  and validly (according to the
terms of each  Lease)  exercises  it's  options  to extend the term of all three
buildings.

19. Additional Shell Construction Costs: Intentionally Omitted

20. General:  In the event of any inconsistency  between this First Addendum and
the Lease Form, the terms of this First Addendum shall prevail.  As used herein,
the term  "Lease"  shall mean the Lease  Form,  this  Addendum  and all  riders,
exhibits, rules, regulations, covenants, conditions and restrictions referred to
in the Lease Form or this Addendum.

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21. Allocation of Property Operating Expenses. Without limiting any restrictions
set forth in the Lease or this  Addendum  relating to Tenant  occupying all four
buildings,  referenced  above,  in the  event  that  one  or  more  of the  four
Buildings,  reference  above,  is  leased by a tenant,  other  than  Tenant or a
subleasee of Tenant,  Landlord shall reasonably  allocate the Property Operating
Expenses  among the  different  Tenants.  Without  limiting the methods by which
Landlord may so reasonably allocate the Property Operating Expenses, it shall be
conclusively  presumed  reasonable  for Landlord to allocate the total  Property
Operating  Expenses among the different  tenants based upon the percentage ratio
of gross rentable  square footages of each Building as is being paid for by each
such tenant such that Landlord recovers 100% of the Property Operating Expenses.


LANDLORD:                                   TENANT:

RENCO INVESTMENT COMPANY                    AVANT! CORPORATION
a California General                        a Delaware Corporation
Partnership

By:____________________________             By:_______________________
     General Partner
                                            Title: ___________________

By:____________________________             By:_______________________
     General Partner
                                            Title: ___________________
By:_____________________________
     General Partner


Dated:__________________________            Dated:___________________

                                       62

<PAGE>


SECOND ADDENDUM TO LEASE
Avant! Corporation
Renco 53

THIS SECOND ADDENDUM TO LEASE ("The  Addendum") is dated for reference  purposes
as of February  24,  1997,  and is made  between  RENCO  INVESTMENT  COMPANY,  a
California general partnership ("Landlord") and AVANT! CORPORATION.,  a Delaware
corporation  ("Tenant") to be a part of that certain  Industrial  Space Lease of
even date  herewith  between  Landlord  and Tenant  (herein the  "Lease"),  with
respect  to the  building  commonly  known as Renco 53 (the  "Building").  Terms
defined in the Lease Form shall have the same  meaning  when used herein  unless
specifically defined otherwise herein.  Landlord and Tenant agree that the Lease
is hereby modified and supplemented as follows:

1.1 E. It is acknowledged that the Intended Commencement Date of the Lease is to
occur in the future when the Lease  between  Landlord  and Cirrus  Logic for the
Leased Premises expires or terminates.  It is specifically  agreed that Landlord
has the option to declare the Lease terminated and the Lease  Commencement  Date
shall  not occur in the event of a  default  by Tenant  under any of the  leases
between  Landlord  and  Tenant  for  Renco  54,  55 and/or 48 prior to the Lease
Commencement  Date under the Lease. It is agreed that this remedy is in addition
to all other remedies set forth in the Lease including,  but not limited to, the
cross default remedies set forth in the First Addendum to Lease.


LANDLORD:                                    TENANT:
RENCO INVESTMENT COMPANY                     AVANT! CORPORATION
a California General                         a Delaware Corporation
Partnership

By:____________________________             By:_______________________
General Partner
                                            Title: ___________________

By:____________________________             By:_______________________
General Partner
                                            Title: ___________________
By:_____________________________
General Partner


Dated:__________________________            Dated:___________________

File No._______________

                                       63

<PAGE>


THIRD AMENDMENT TO LEASE
(Renco 53)

         THIS  THIRD  AMENDMENT  TO  LEASE  ("Amendment")  dated  for  reference
purposes as of February 24, 1997, is made to that  Industrial  Space Lease dated
as of June  14,  1995  (the  "Lease")  by and  between  CIRRUS  LOGIC,  INC.,  a
California  Corporation as Tenant  ("Tenant") and RENCO  INVESTMENT  COMPANY,  a
California partnership as Landlord ("Landlord"),  for the lease of space located
at 46875 Bayside Parkway, Fremont, California (the "Leased Premises"). The Lease
was amended by the terms of the First  Amendment  to Lease  dated for  reference
purposes as of May 1, 1996,  and the Second  Amendment to Lease dated as of June
11,  1996.  The  parties  hereto  agree that the Lease is  amended,  changed and
modified by the following provisions, which are hereby added to the Lease:

         Unless otherwise expressly provided herein, all terms which are given a
special  definition  by the Lease that are used  herein are  intended to be used
with the  definition  given to them by the Lease.  The  provisions  of the Lease
shall remain in full force and effect except as specifically  amended hereby. In
the event of any inconsistency  between the Lease and this Amendment,  the terms
of this Amendment shall prevail.


1.1 S.   Base Monthly Rent:  The Base Monthly rent is as follows:

                  May 1, 1996,  through  November 30, 1996, the amount of Eighty
                  Three Thousand Six Hundred Eighty Dollars ($83,680.00).

                  December  1, 1996,  through  May 31,  1997,  the amount of One
                  Hundred One Thousand Six Hundred Eighty Dollars ($101,680.00).

                  June 1, 1997, through April 30, 2003, the amount of Ninety Two
                  Thousand Six Hundred Eighty Dollars ($92,680.00).


                  On May 1,  2003,  the Base  Monthly  Rent  shall  be  adjusted
                  pursuant to section 1.1 S of the Lease.

                  On May 1,  2006,  the Base  Monthly  Rent  shall  be  adjusted
                  pursuant to section 1.1 S of the Lease.


1.1 G    Lease Termination Date:  April 30, 2009


18. Option to Renew:  Section 18 of the First  Addendum to Lease which  provides
for an option to renew the term of the Lease is amended as follows:  By Sublease
Agreement  dated as of the date  hereof  (the  "Avant!  Sublease"),  Tenant  has
subleased  the Leased  Premises to Avant!  Corporation,  a Delaware  corporation
("Avant!")   for  the  remainder  of  the  term  of  the  Lease.   Landlord  has
simultaneously  entered into direct leases with Avant!  for (a) two (2) adjacent
buildings  (the  "Avant!  Leases")  and  (b)  the  Leased  Premises  for a  term
commencing  upon the  expiration  of the term of the Lease.  Tenant's  option to
renew is  exercisable  only if Tenant has  terminated  the Avant!  Sublease as a
result of a default  under said  sublease by Avant!  and Avant!  has vacated the
Leased Premises.

19. Additional Shell Costs: Tenant has paid to Landlord a total of Three Hundred
Twenty Two  Thousand  Six Hundred  Forty Eight  Dollars  ($322,648.00)  for work
pursuant to Section 19 of the First  Addendum to Lease.  The Lease provides that
Landlord  shall  reimburse to Tenant  seventy  five percent  (75%) of the usable
costs. Landlord shall reimburse to Tenant Two Hundred Forty Two Thousand Dollars
($242,000.00),  one half when the first  building  (Renco 54) is  occupied  by a
third party tenant,  and the balance when the second  building  (Renco 55) is so
occupied.  Tenant has paid to Landlord One Hundred Nineteen Thousand One Hundred
Dollars  ($119,100.00) for architectural  plans for two buildings  identified as
Renco 54 and Renco 55.  Tenant has  elected  not to lease  those two  buildings.
Landlord shall

                                       64

<PAGE>

reimburse  to Tenant the entire  amount of One  Hundred  Nineteen  Thousand  One
Hundred Dollars  ($119,100.00) when Landlord receives a building permit from the
City of Fremont for the buildings and starts construction of the buildings.

First Addendum to Lease, 15. Cross Default:  The provisions of Section 15 of the
First  Addendum  to Lease  shall not  apply so long as  Avant!,  or a  permitted
assignee or sublettee of Avant!,  remains in possession as a subtenant of Tenant
(or as a permitted  assignee or sublettee of Avant! as applicable) in the Leased
Premises and the Avant! sublease remains in effect.

         IN WITNESS  WHEREOF,  Landlord  and  Tenant  have  executed  this Third
Amendment to Lease with the intent to be legally bound thereby,  to be effective
as of the date the second party signs this Third Amendment to Lease.


AS LANDLORD:                                AS TENANT:
RENCO INVESTMENT COMPANY,           CIRRUS LOGIC, INC.,
a California partnership            a California corporation

By:      _____________________      By:     ______________________
Title: General Partner
                                    Title:  ____________________

By:      _____________________      By:     ______________________
Title: General Partner
                                    Title:  ____________________

By:      _____________________      By:     ______________________
Title: General Partner


Dated:  February __, 1997           Dated:  February __, 1997

                                       65

<PAGE>


FOURTH AMENDMENT TO LEASE
(Renco 53)

         THIS  FOURTH  AMENDMENT  TO LEASE  ("Amendment")  dated  for  reference
purposes as of February 24, 1997, is made to that  Industrial  Space Lease dated
as of June  14,  1995  (the  "Lease")  by and  between  CIRRUS  LOGIC,  INC.,  a
California  Corporation as Tenant  ("Tenant") and RENCO  INVESTMENT  COMPANY,  a
California partnership as Landlord ("Landlord"),  for the lease of space located
at 46875 Bayside Parkway, Fremont, California (the "Leased Premises"). The Lease
was amended by the terms of the First  Amendment  to Lease  dated for  reference
purposes as of May 1, 1996,  the Second  Amendment to Lease dated as of June 11,
1996 and the Third Amendment to Lease dated as of February 24, 1997. The parties
hereto agree that the Lease is amended,  changed and  modified by the  following
provisions, which are hereby added to the Lease:

         Unless otherwise expressly provided herein, all terms which are given a
special  definition  by the Lease that are used  herein are  intended to be used
with the  definition  given to them by the Lease.  The  provisions  of the Lease
shall remain in full force and effect except as specifically  amended hereby. In
the event of any inconsistency  between the Lease and this Amendment,  the terms
of this Amendment shall prevail.

1. Consent to Sublease/Exhibit B to Consent to Sublease:  The parties hereto are
concurrently  herewith  entering into a Consent to Sublease  dated  February 24,
1997 ("Consent to Sublease") with respect to a Sublease  Agreement  ("Sublease")
between Tenant and Avant!  Corporation  ("Subtenant")  for the Leased  Premises.
Without  limiting the rights,  privileges  and/or  obligations  as currently set
forth in the Consent to  Sublease,  or the Exhibits  thereto,  in the event of a
default by Subtenant  under the  Sublease,  or a  termination  of the  Sublease,
Tenant shall have all of the rights,  privileges and  obligations of "Subtenant"
under the Tenant  Improvement  Agreement attached as Exhibit B to the Consent to
Sublease.

         IN WITNESS  WHEREOF,  Landlord  and Tenant  have  executed  this Fourth
Amendment to Lease with the intent to be legally bound thereby,  to be effective
as of the date the second party signs this Fourth Amendment to Lease.


AS LANDLORD:                                AS TENANT:
RENCO INVESTMENT COMPANY,                   CIRRUS LOGIC, INC.,
a California partnership                    a California corporation

By:____________________________             By:_______________________
Title:General Partner
                                            Title: ___________________

By:____________________________             By:_______________________
Title:General Partner
                                            Title: ___________________
By:_____________________________
Title:General Partner

Dated:  February __, 1997           Dated:  February __, 1997

                                       66

<PAGE>


EXHIBIT "B"
TENANT IMPROVEMENT AGREEMENT
INTERIOR ALLOWANCE
[RENCO 53]

1.  Building  Shell and Common Areas:  The Building  Shell and Common Areas have
been completed and Tenant and Subtenant  accept such  improvements  in their "As
Is" condition,  subject to any warranty  provisions that may exist in the Master
Lease.

2. Design and  Construction  of  Improvements  in and about the Leased  Premises
("Tenant  Improvements"):  Landlord,  Renco  Investment  Company,  a  California
partnership  ("Landlord")  agrees  to  construct  within,  under,  and above the
Building housing the Leased Premises certain "Tenant Improvements" (or "Interior
Improvements")  as set  forth  in  this  Exhibit  "B"  in  accordance  with  the
Construction Work Schedule  described herein.  The Tenant  Improvements shall be
similar  in type  and  quality  to the  general  purpose  interior  improvements
installed by Landlord in its  buildings  in Bayside  Technology  Park,  Fremont,
California.   Subject  to  Landlord's  reasonable  approval  Subtenant,   Avant!
Corporation  ("Subtenant"),  with the consent of Tenant,  Cirrus Logic,  Inc., a
California  corporation  ("Tenant") shall have the flexibility to design a floor
plan that suits  Subtenant's  needs so long as such plan  preserves  the general
purpose nature of the Building.

         Landlord  shall pay for the cost of Tenant  Improvements  (which  shall
include the cost of alterations to the Building  and/or Outside Areas  requested
by Subtenant) up to a maximum amount of  $1,790,721.00.  Subtenant agrees to pay
the entire  cost of  construction  approved  by  Subtenant  and Tenant of Tenant
Improvements  in  excess  of the  above  amount.  Landlord  shall  provide  such
information  as is  reasonably  requested by  Subtenant  to assist  Subtenant in
evaluating  or  approving  construction  costs  or any  change  order  within  a
reasonable period of time based upon the information requested.

         In the event the cost of any Tenant Improvements  approved by Subtenant
and Tenant in  accordance  with this  Agreement  exceeds the total  amount which
Landlord has agreed to spend, Subtenant shall pay such excess amount within five
(5) days of receipt of a written  statement from Landlord  therefor  however not
earlier  than thirty (30) days  following  delivery to  Subtenant  of an initial
estimated  budget  for  such  costs.  Upon  tender  of  such  sum  to  Landlord,
Subtenant's  obligation  to pay any such  amount in regard  to  approved  Tenant
Improvements, the cost of which was covered by such payment, shall be completely
satisfied  notwithstanding  that the final cost of the same is in excess of such
payment  made by  Subtenant,  provided  however,  that such shall not apply with
respect  to cost  increases  arising  as a result of a delay  caused by  Tenant,
Subtenant  or  Subtenant's  Architect,  or  caused  by an error  of  Subtenant's
Architect or incomplete  drawings,  plans and/or  specifications  of Subtenant's
Architect.  Landlord or Tenant may require  Subtenant to pay such excess  amount
prior to, and as a condition of, the commencement of construction of such Tenant
Improvements.  If at any time  during  the  design  or  construction  of  Tenant
Improvements,  Subtenant or Subtenant's  Architect requests changes in the scope
of Tenant  Improvements  (and such changes are approved by Landlord and Tenant),
which  changes  increase the cost of the work above what  Landlord has agreed to
spend,  then Subtenant shall pay to Landlord the cost of improvements  above the
amount that Landlord has agreed to spend, and Subtenant shall pay the amount due
within five (5) days from receipt of a written  statement  from  Landlord.  Upon
tender of such sum to Landlord, Subtenant's obligation to pay any such amount in
regard to approved  Tenant  Improvements,  the cost of which was covered by such
payment,  shall be completely  satisfied  notwithstanding that the final cost of
the same is in excess of such payment made by Subtenant,  provided however, that
such shall not apply with  respect  to cost  increases  arising as a result of a
delay caused by Tenant,  Subtenant  or  Subtenant's  Architect,  or caused by an
error  of   Subtenant's   Architect  or   incomplete   drawings,   plans  and/or
specifications  of  Subtenant's  Architect.  All amounts due from  Subtenant  as
provided  herein  shall be  considered  as  "rent"  under the  Master  Lease and
Sublease  and all amounts due shall be subject to the terms of the Master  Lease
and Sublease.  In the event that Subtenant  fails to make any payment within the
required  time  period,  Subtenant  shall pay  interest  and late charges on the
delinquent  amount  directly  to Landlord in  accordance  with  Section 3 of the
Master Lease. In addition, should any amounts not be paid when due, Landlord may
suspend the construction of Interior  Improvements  until said amounts have been
paid and in such  event  Landlord  shall  provide  written  notice to Tenant and
Subtenant of such event.  Following  Subtenant's  acceptance  of the cost of any
item, as referenced above,  Landlord shall be entitled to any cost/price savings
that thereafter occur with respect to such item.

                                       67

<PAGE>

         Subtenant  shall  have  the  right  to  contract  with  vendors  of its
selection for the installation of Subtenant's furnishings and fixtures, provided
however,  that  Subtenant's  vendors shall not  unreasonably  interfere with the
construction of Interior  Improvements  by Landlord and Landlord's  contractors.
Landlord shall not charge  Subtenant a fee pursuant to section 2 (g) (2) for any
work performed by Subtenant's  vendors.  Landlord's  contractor shall assist (so
long as such assistance does not increase  Landlord's  cost) in the coordination
of work performed by Subtenant's subcontractors and vendors.

         (a)  Subtenant's  Conceptual  Plan  ("Conceptual  Plan") and Landlord's
Schematic  Plan,  ("Schematic  Plan"):  No later than March 20, 1997,  Subtenant
shall  provide  to  Landlord  and  Tenant a  Conceptual  Plan  for the  Interior
Improvements  to be constructed in the building.  The Conceptual Plan shall show
Subtenant's  preference for the location of: doors,  partitions,  ceilings,  air
conditioned areas, restrooms,  offices,  conference areas, entries,  assembly or
manufacturing   areas,   storage  and  distribution   areas,  and  any  proposed
alterations to existing improvements in such Building.

         Subtenant has selected Robinson Mills + Williams to represent Subtenant
and  prepare  design  and  construction  drawings   ("Subtenant's   Architect").
Subtenant shall pay all fees charged by Subtenant's  architect.  Within ten (10)
days from the date the Conceptual Plan was required to be completed, Subtenant's
Architect shall prepare a Schematic Plan from Subtenant's Conceptual Plan, which
Schematic  Plan shall be drawn to scale and shall show proposed  dimensions  and
general  performance  specifications  for  areas  to be  heated,  cooled  and/or
lighted.  Landlord and Tenant shall have five (5) business  days from receipt of
the Schematic Plan from Subtenant  within which to review and approve or propose
specific  changes to the  Schematic  Plan.  If  Landlord  or Tenant  require any
changes to the  Schematic  Plan,  Subtenant's  Architect  shall make the changes
which are acceptable to Landlord,  Tenant and Subtenant within five (5) business
days of Landlord's or Tenant's  requested  changes and said Schematic Plan shall
be signed by  Landlord,  Tenant  and  Subtenant  within  five (5) days from each
party's  receipt of the revised plan,  and said  Schematic Plan shall become the
Approved  Schematic  Plan.  Landlord and Tenant shall not be required to approve
the Schematic Plan if such Plan calls for improvements that would, in Landlord's
or Tenant's reasonable opinion damage the Building or reduce its value. Landlord
acknowledges,  and agrees with,  (subject to approval of the Schematic  Plan and
Construction  Drawings)  Subtenant's  concept of the stair and water feature and
pendant lights as set forth in Subtenant's current space plan.

         (b) Construction  Drawings for the Tenant  Improvements  ("Construction
Drawings"):  Within  thirty  (30)  days  from the date  the  Schematic  Plan was
required to be  completed,  Subtenant's  Architect  shall  prepare  Construction
Drawings based on the Approved Schematic Plan and deliver to Landlord and Tenant
the  Construction  Drawings  which  reflect  the  requirements  of the  Approved
Schematic Plan. The Construction  Drawings must be documents that provide a full
and complete  description of the Interior  Improvements and must be suitable for
construction  and comply  with all  building  code  requirements  including  the
requirement for completeness and suitability for  construction.  Within five (5)
business  days from receipt of the  Construction  Drawings,  Landlord and Tenant
shall  review the  Construction  Drawings  and deliver any  proposed  changes to
Subtenant.  Landlord's  and Tenant's  review shall be for design  purposes only.
Subtenant and Subtenant's  Architect shall remain solely  responsible and liable
for any design  deficiencies  including  the  responsibility  to comply with all
applicable  building codes and  regulations  including  requirements  of utility
service  providers.  If Landlord and/or Tenant does not deliver to Subtenant any
proposed changes to the Construction  Drawings within such five (5) business day
period, such party shall be deemed to have approved the Construction Drawings as
submitted to them.  If Landlord  and/or  Tenant does  deliver to  Subtenant  any
proposed changes to the Construction  Drawings within such five (5) business day
period,  the parties shall agree upon the changes to be made to the Construction
Drawings  within a period of five (5) business days  thereafter.  When Landlord,
Tenant and Subtenant agree upon the Construction  Drawings,  a representative of
each party shall sign the same and when signed by both  parties,  any changes in
the  Construction  Drawings  shall only be made as  authorized  pursuant  to the
provisions of this Exhibit "B".  Notwithstanding anything above to the contrary,
each  party  agrees not to  unreasonably  withhold  consent to the  Construction
Drawings to the extent that they are  prepared in  accordance  with the Approved
Schematic Plan.

         (c) Time for Construction of Tenant  Improvements:  Promptly  following
approval  of the  Construction  Drawings  by  Landlord,  Tenant  and  Subtenant,
Landlord  shall  apply for and use  reasonable  efforts to obtain the  necessary
building permits to allow the construction of the Tenant Improvements.  Promptly
following  the  issuance  of the  necessary  building  permits,  Landlord  shall
commence construction of the Tenant Improvements and shall use

                                       68

<PAGE>

reasonable  efforts to complete the improvements  within a reasonable  period of
time using  reasonable  efforts to  maintain  the  Construction  Work  Schedule;
provided,  however, that Landlord shall be excused for a delay in the completion
of  construction  of  the  Tenant  Improvements  for  such  period  of  time  as
construction  is delayed because of any fault or neglect of Tenant or Subtenant,
because  of  changes  requested  by Tenant  or  Subtenant,  because  of any law,
regulation,  ordinance,  or order of any public agency (provided  Landlord shall
not be excused for public agency delays as the result of Landlord deviating from
the Construction Drawings without Subtenant or Subtenant's Architect's consent),
or  because  of  acts of God,  labor  disputes,  strikes,  inability  to  obtain
materials or labor, fires, floods,  inclement weather,  earthquakes,  epidemics,
quarantine,  restrictions,  freight embargoes,  or other causes or contingencies
beyond the  reasonable  control  of  Landlord.  Landlord  shall take any and all
reasonable  actions,  remedial or otherwise,  to maintain the Construction  Work
Schedule.   Subtenant  shall  remain  solely  responsible  for  the  conduct  of
Subtenant's  vendors,  contractors,  and  subcontractors.  Subtenant's  vendors,
contractors,  and  subcontractors  shall not interfere with the  construction of
Landlord's Work or Landlord's contractors, or subcontractors.

         Subtenant (with Tenant's prior written consent) may authorize  Landlord
and Landlord's  Contractor to commence work prior to obtaining a building permit
provided that Subtenant in so doing shall accept any cost,  delay, or expense of
commencing construction prior to obtaining a building permit.

         (d)  [Intentionally omitted]

         (e)  Hazardous   Materials   Facilities:   Subtenant  shall  be  solely
responsible  for the  design,  approval,  and payment of the costs of design and
construction  of  any  and  all  work,  fixtures,   or  materials  required  for
Subtenant's  transportation,  storage, use, and disposal of Hazardous Materials,
which  Hazardous  Materials shall only enter the Property or any portion thereof
pursuant to the terms of the Sublease and the Master Lease. Subtenant shall also
be solely  responsible  for the  design,  approval,  and payment of the costs of
design and construction for any and all work,  fixtures,  or materials  required
for  the  handling,  service,  or  provision  of food  on the  Leased  Premises.
Landlord's  Work is limited to the  construction  of the Tenant  Improvements as
shown on  Construction  Drawings  approved by  Landlord,  Tenant and  Subtenant.
Landlord shall promptly notify Subtenant of any items of the Tenant Improvements
which would be Subtenant's  obligation pursuant to this paragraph.  In addition,
Landlord's  Work (and the funds that Landlord has agreed to spend)  specifically
excludes any and all fees charged by  governmental  agencies for Subtenant's use
of Hazardous Materials or Subtenant's service of food which fees include but are
not limited to: sewer or sanitary  district fees,  health  department  fees, air
quality fees, excess water usage fees, and the like. Any and all such fees shall
be paid by Subtenant to the appropriate  governmental  agency. In the event that
the design, approval, construction, or completion of any work to be performed by
Landlord  is delayed  directly or  indirectly  for any reason as a result of (i)
Subtenant's  use  of  Hazardous  Materials,  or  (ii)  Subtenant's  handling  or
intention  to handle  food or provide  food  service,  then  Subtenant  shall be
delaying  the  Landlord's  Work.  Landlord  shall  promptly  notify  Tenant  and
Subtenant  whenever  Landlord becomes aware of any action of Tenant or Subtenant
which will cause a delay in any work to be performed by Landlord.

         (e) [Intentionally omitted]

         (f) [Intentionally omitted]

         (f-1) [Intentionally omitted]

         (g) Cost of Tenant  Improvements:  As used herein,  the "Cost of Tenant
Improvements"  or words of  similar  import  shall  include  all  costs  paid or
incurred  by  Landlord  in  connection   with  the  design,   approval,   and/or
construction of the Tenant  Improvements  (or any  improvements) as shown on the
Construction Drawings (as they may be amended), including but not limited to:

                  (1) The fees of architects,  engineers,  consultants,  utility
companies, or governmental agencies for the design, supervision, construction or
approval  of  improvements   or  alterations  to  the  basic   Building,   which
improvements   or  alterations   are  requested  by  Subtenant  or  required  by
Subtenant's use;

                  (2) The costs and charges by  Landlord's  general  contractor,
subcontractors,  material suppliers,  laborers,  and employees who provide goods
and services for the actual construction of Tenant's Improvements or

                                       69

<PAGE>

Building  alterations  requested  or  required by  Subtenant  for its use of the
Leased  Premises.  Landlord (or an  affiliate of Landlord)  may act as a general
contractor or subcontractor,  and such general  contractor may charge all of its
reasonable direct costs as well as a construction management fee, profit, and/or
overhead,  which charge shall equal seven percent (7.0%) times the total cost of
the work excluding costs for  architectural  fees,  governmental fees (including
building department fees), and utility company fees;

                  (3) Direct costs of procuring and installing the  improvements
or items required for Subtenant's use of the Leased Premises including,  but not
limited to:  building  permits (but  excluding the cost of the "shell"  building
permit),  inspections,  filings,  taxes,  governmental  fees; any  installation,
connection or service fees required to provide  utility  service to the Building
or into the Leased Premises, the cost of utility service or security service, or
any service or material provided to the Building for purpose of the construction
of Tenant  Improvements.  As a direct cost Landlord's  contractor  shall include
costs  of  labor,  materials,   equipment,  tools,  construction  equipment  and
machinery,  water, heat, and utilities,  transportation and other facilities and
services  necessary  for  proper  execution  and  completion  of  work,  whether
temporary or permanent and whether or not  incorporated or to be incorporated in
the work;

                  (4)  General  contractor's  costs of  maintaining  any and all
property damage and/or liability insurance  pertaining and reasonably  allocable
to the construction of the Tenant Improvements;

                  (5) Omitted;

                  (6) Costs of  performance or payment bond premiums if approved
                      by Subtenant;

                  (7)  Omitted; and

                  (8) The  following  items  shall  be  included  in the cost of
construction of Interior  Improvements  whether the improvements are constructed
at the  time  of  shell  construction  or at time of  construction  of  interior
improvements:  the additional cost of high performance glass in lieu of standard
gray lite glass,  glass in the rear of the Building where there  otherwise would
be roll up truck doors,  data conduit between  buildings,  special door closures
and electronic  locks,  false mullions in the window wall, the elevator  (except
that  Landlord  shall pay for the cost of the concrete  elevator pit and framing
for the hole in the second floor both as shell items), underground plumbing runs
to restrooms,  the lobby stair,  employee patio areas, all improvements required
for recreational use and/or child care, and all restrooms.

         (h) Selection of Subcontractors: Subtenant, with the consent of Tenant,
shall have reasonable  rights of approval of the  subcontractors  to perform the
work of construction of Tenant Improvements prior to the engagement thereof, and
Subtenant,  with the consent of Tenant, shall have reasonable rights of approval
of the cost charged by each subcontractor prior to the incurrence of any cost or
charge by each such subcontractor.  Following Subtenant's acceptance of the cost
of any item, as referenced  above,  Landlord shall be entitled to any cost/price
savings that thereafter occur with respect to such item.

         (i)   Miscellaneous:   Landlord's   general  contractor  shall  provide
supervision  during normal  business  hours when  required.  Landlord's  General
Contractor shall assist  Subtenant's  Architect in verifying  existing  building
conditions, but Subtenant's Architect shall remain primarily responsible for the
accuracy of its drawings. Landlord's General Contractor shall provide a detailed
cost schedule and a construction  work schedule  ("Construction  Work Schedule")
within  fourteen  (14) days of receipt  from  Subtenant's  Architect of complete
Construction Drawings.  Landlord's General Contractor shall supervise and direct
Landlord's  Work using the  General  Contractor's  best  skills  and  attention.
Landlord's  General  Contractor shall be fully  responsible for and have control
over construction  means,  methods,  techniques,  sequences,  and procedures for
coordinating  portions  of the work under the  contract.  Landlord's  contractor
shall  review,  approve,  and submit to  Subtenant's  Architect  shop  drawings,
product data,  samples,  and submittals  required by the contract documents with
promptness  and in sequence  where possible as to cause no delay in the work and
the  project  schedule.  Landlord's  General  Contractor  shall take  reasonable
precautions  for  safety  and shall  provide  reasonable  protection  to prevent
damage, injury, or loss.

         (j) Punch List and  Correction of Defects:  Not later than fifteen (15)
days after substantial completion of the Tenant Improvements (which shall not be
sooner than the issuance of a  Certificate  of Occupancy)  Landlord,  Tenant and

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<PAGE>

Subtenant  shall  conduct a  walkthrough  of the Leased  Premises  and  mutually
prepare a written PUNCH LIST setting forth any defective  item of  construction.
Landlord shall cause all defects,  errors or omissions  listed in the PUNCH LIST
to be corrected within a reasonable time after receipt thereof.

3. Conflict: In the event of a conflict between the language of this Exhibit and
either the Master Lease or the  Sublease,  the  language of this  Exhibit  shall
control.

4. Time of Essence:  Time is of the essence of each and every  provision of this
Work Letter.

5. Approvals: Except as expressly provided otherwise, whenever the approval of a
party is required hereunder, such approval shall not be unreasonably withheld or
delayed.

                                       71

<PAGE>



CONSENT TO SUBLEASE
Renco 53
[Cirrus Logic/Renco Master Lease]

         The  undersigned  Landlord  ("Landlord") as Landlord under that certain
Lease by and between Landlord and the undersigned Tenant ("Tenant"),  dated June
14, 1995, as amended by three amendments (May 1996, June 1996 and February 1997)
(collectively "Master Lease"),  hereby consents to the Sublease attached hereto,
as Exhibit "A", subject to the following terms and conditions:

         1.  Nothing  herein  shall  be  deemed  to be a  waiver  of any term or
condition  contained  in  the  above-referenced  Master  Lease.  Landlord  shall
continue  to have all rights  and  remedies  as set forth in the  Master  Lease,
notwithstanding the terms or conditions of the Sublease.

         2.  Nothing  contained  herein nor in the Sublease  Agreement  shall be
deemed to release the Tenant from any term or condition  contained in the Master
Lease and Tenant shall remain fully liable for each and every term and condition
contained in the Master Lease.

         3.  Nothing  contained  herein shall be deemed to be the Consent of the
Landlord to any further  Sublease or Assignment of the premises  leased pursuant
to the Master Lease by either Tenant or Subtenant.

         4. It is agreed that the Sublease is being entered into for the express
benefit  of  Landlord,  as  well  as  Tenant,  and  Landlord  is a  third  party
beneficiary  of such  Sublease and Landlord has the right,  but not the duty, to
enforce  such  obligations  directly  against  Subtenant  (as  well as  Tenant).
Subtenant has the right,  but not the duty, to enforce the  obligations  owed to
Tenant  by  Landlord  under  the  Master  Lease,  which  Subtenant  is a  direct
beneficiary thereof.

                  Notwithstanding the foregoing,  the parties hereto acknowledge
and agree that (a) any sums  collected by Landlord  with respect to the Sublease
shall be credited to Tenant's corresponding  obligations under the Master Lease,
(b)  Landlord  shall not have the right to  terminate  the Sublease or otherwise
limit or interfere  with  Tenant's  rights with  respect to Subtenant  under the
Sublease, except in conjunction with exercising such rights against Tenant under
the Master  Lease as well,  and (c) Tenant  shall have the right (in  accordance
with the Sublease) to amend, modify or terminate the Sublease without Landlord's
consent and without any liability to Landlord.

         5. It is expressly acknowledged by the parties hereto that Landlord has
not analyzed the Sublease, referred to herein, and is not hereby agreeing to any
term  or  condition   contained   therein  to  the  extent  any  provisions  are
inconsistent  with the Master Lease or otherwise  create  different  obligations
upon  Landlord or create  additional  rights to Tenant or Subtenant  thereunder.
Landlord  is merely  consenting  to such  subletting  pursuant  to the terms and
conditions contained herein and contained in the Master Lease.

         6. This Consent must be executed by Landlord,  Tenant, and Subtenant to
be effective.

         7. Landlord  hereby  consents to the following  additional  uses of the
premises demised under the Master Lease:  production,  warehousing,  repair, and
sales and service of high technology computer  hardware/software and all related
support functions  including  office,  research and development as such uses are
permitted in Bayside Technology Park.

         8. In the event of a default  under the  Master  Lease  Landlord  shall
deliver to  Subtenant  at the address  set forth in the  Sublease  any  required
notice of default under the Master Lease before  Landlord may enforce any remedy
against Subtenant for such default, including, but not limited to, the remedy of
eviction.  Such  notices need not  necessarily  be delivered to Subtenant at the
same time as delivered to Tenant, however, Subtenant (but not Tenant) shall have
the following  time periods to cure such default  (Tenant shall continue to have
only the  time  periods  to cure as set  forth in the  Master  Lease):  (a) with
respect to  defaults  in the payment of monetary  sums,  two (2)  calendar  days
beyond the notice  period  Tenant is entitled to under the Master Lease for such
default and (b) with respect to all other defaults ten (10) calendar days beyond
the notice period Tenant is entitled to under the Master

                                       72
<PAGE>


Lease for such default.  It is expressly  acknowledged that such additional cure
periods granted to Subtenant apply only to the required notices under the Master
Lease  for a  default  to  exist  and such  cure  periods  do not also  apply to
statutory notices Landlord may be required to serve under California's  unlawful
detainer  statutes.  Any cure by  Subtenant  is without  prejudice to either the
Landlord's  rights  against  the  Tenant  under  the  Master  Lease  (as  may be
diminished by any cure by Subtenant) or to the Subtenant's rights against Tenant
under the Sublease.  Landlord  further agrees to accept  performance of Tenant's
obligations  under the Master Lease by  Subtenant  as if such were  performed by
Tenant.

         9. Landlord  shall credit any payments made by Subtenant to Landlord to
Tenant's corresponding obligation under the Master Lease.

         10.  The  construction  of  the  improvements  and  all   corresponding
obligations  relating thereto as referenced in Exhibit C to the Master Lease, as
amended,  shall now be  performed  in  accordance  with the  Tenant  Improvement
Agreement  attached  hereto as Exhibit  B.  Exhibit C to the  Master  Lease,  as
amended, is hereby deleted and replaced with the terms and provisions of Exhibit
B attached  hereto.  So long as the  Sublease  and the Master  Lease are in full
force  and  effect,  the  parties  hereto  agree  to  perform  their  respective
obligations set forth in the Tenant Improvement Agreement attached as Exhibit B.

                                                     Renco Investment Company,
                                                     a California Partnership

Dated:  _________________                   By:  _______________________
                                            Title: General Partner
                                            By:  _______________________
                                            Title: General Partner
                                            By:  _______________________
                                            Title: General Partner

                                                     LANDLORD
                                                     Cirrus Logic, a
                                                     California Corporation

Dated:  _________________                   By:  _______________________
                                            Title: _____________________
                                            By:  _______________________
                                            Title: _____________________

                                                     TENANT
                                                     Avant! Corporation, a
                                                     Delaware Corporation

Dated:  _________________                   By:  _______________________
                                            Title: _____________________
                                            By:  _______________________
                                            Title: _____________________

                                                     SUBTENANT


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<PAGE>



BASIC SUBLEASE TERMS

Base Monthly
Rent:             Months   Base Monthly Rent
1-12              $90,000   ($1.00 per square foot)

Base Monthly Rent for each one (1)- year period  following the first such period
shall be  increased  by an amount equal to four percent (4%) of the Base Monthly
Rent in the immediately preceding one (1)-year period. See Paragraphs 4 and 5.

Brokers: Sublandlord's
Broker:           BT Commercial - Ron Himes

Subtenant's
Broker:           CB Madison Advisory Group - Jay Phillips

Commencement
Date:             See Paragraph 2

Rent Commencement
Date:             July 1, 1997 (subject to Paragraph 4.A)

Free  Rent  Period:  The  period  between  the  Commencement  Date  and the Rent
Commencement Date. See Paragraph 4.A

Expiration
Date:              April 30, 2009

Landlord:         Renco Investment Company

Master Lease:     That  certain  Lease dated June 14, 1995 between Landlord,  as
                  landlord, and Sublandlord, as tenant, as amended.

Permitted
Uses:             The term "Permitted Use" shall mean the following:


Manufacture,  warehousing, repair, and sales and service of electronic equipment
and all related support functions including office, research, and development as
such uses are  permitted  in Bayside  Technology  Park and any other lawful uses
with the  consent  of  Sublandlord  and  Landlord.  Subject  to the  consent  of
Landlord,  Sublandlord  hereby  consents  to  Subtenant's  use of the  Subleased
Premises for the following purposes: production,  warehousing, repair, and sales
and  service  of high  technology  computer  hardware/software  and all  related
support functions including office,  research,  and development as such uses are
permitted   in  Bayside   Technology   Park  and  any  other  lawful  uses  with
Sublandlord's consent, which shall not be unreasonably withheld,  conditioned or
delayed.

Subleased Premises:       That  certain  building  consisting  of approximately
                          90,000  square feet located at 46871 Bayside Parkway,
                          Fremont, California.  See Recitals A and B and
                          Paragraph 1.

Security Deposit:         Ninety Thousand Dollars ($90,000)

Subtenant:                Avant! Corp., a Delaware corporation


Subtenant's Address for
Notices:                  Prior to the Rent Commencement Date:
                          1208 East Arques


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<PAGE>

                          Sunnyvale, CA 94086
                          Attn:     Vice President and Chief Financial Officer

                          as of the Rent Commencement Date:
                          46871 Bayside Parkway
                          Fremont, CA  94538
                          Attn:    Vice President and Chief Financial Officer

                          with copies (of default notices only) to:
                          Robert Gunderson, Esq.
                          Gunderson, Dettmer & Stough
                          155 Constitution Avenue
                          Menlo Park, California  94025
                          or to such other address as Subtenant shall designate.

Sublandlord:      Cirrus Logic, Inc., a California corporation

Sublandlord's
Address for
Notices:          3100 West Warren Avenue
                  Fremont, CA 94538
                  Attn: Controller

Exhibits:         Exhibit A - Master Lease


                                       75
<PAGE>



SUBLEASE


This Sublease  ("Sublease") is made on __________,  1997,  between Cirrus Logic,
Inc.,  a  California  corporation  ("Sublandlord"),  whose  address is 3100 West
Warren  Avenue,   Fremont,   California  94538  and  Avant!  Corp.,  a  Delaware
corporation  ("Subtenant"),  whose  address is 1208 East Arques,  Sunnyvale,  CA
94086,  as a Sublease under that certain master lease (the "Master Lease") dated
June 14, 1995,  entered into by Renco Investment  Company,  a California general
partnership, as landlord ("Landlord"), and Sublandlord, as tenant, as amended by
the First Amendment to Lease dated for reference purposes as of May 1, 1996, the
Second  Amendment to Lease dated as of June 11, 1996, and the Third Amendment to
Lease dated for  reference  purposes as of February 24, 1997  (collectively  the
"Master Lease"), a copy of which Master Lease is attached hereto as Exhibit A.


R E C I T A L S


A. Pursuant to the Master Lease,  Sublandlord  leases from Landlord that certain
building located at 46871 Bayside Parkway, City of Fremont, State of California,
comprised of approximately 90,000 rentable square feet (the "Master Premises").

B.  Subtenant  desires to lease from  Sublandlord,  and  Sublandlord  desires to
sublease  to  Subtenant,  the entire  Master  Premises,  together  with  certain
appurtenances  thereto,  consisting of  approximately  ninety thousand  (90,000)
rentable  square feet as  outlined in red on Exhibit A to the Master  Lease (the
"Subleased  Premises"),  it being agreed for purposes of this  Sublease that the
Subleased Premises contain such number of rentable square feet.


A G R E E M E N T


NOW, THEREFORE, the parties hereto, in consideration of the foregoing and of the
mutual promises contained herein and for other good and valuable  consideration,
agree as follows:


1.  Subleased  Premises.  Sublandlord  hereby  leases to Subtenant and Subtenant
hereby hires from Sublandlord the Subleased Premises as set forth in more detail
in Section 2.1 of the Master Lease,  which Section 2.1 is incorporated into this
Sublease.  Any defined terms used herein shall have the meaning ascribed to them
in the Master Lease unless specifically defined herein.

2. Term. The term ("Term") of this Sublease shall commence on the date of mutual
execution and delivery of this Sublease (the "Commencement  Date").  Sublandlord
shall  deliver  possession  of  the  Subleased  Premises  to  Subtenant  on  the
Commencement  Date,  subject  to  obtaining  Landlord's  consent as set forth in
Paragraph 18 below,  and this Sublease shall  terminate on the earliest to occur
of (a) April 30, 2009 (the  "Expiration  Date"),  (b) the date this  Sublease is
sooner  terminated  pursuant to its terms,  or (c) the date the Master  Lease is
sooner terminated pursuant to its terms.

3. Delivery and  Acceptance.  If Sublandlord is unable to deliver  possession of
the Subleased  Premises to Subtenant to commence (or cause Landlord to commence)
its construction of the Tenant  Improvements  (defined below) on or before April
1, 1997,  for any reason  whatsoever,  then as  Subtenant's  sole and  exclusive
remedy,  Subtenant may terminate  this Sublease by written notice to Sublandlord
at any time thereafter until such possession is delivered,  whereupon any monies
previously paid by Subtenant to Sublandlord shall be reimbursed to Subtenant and
the parties shall have no further obligation to each other. By taking possession
of the Subleased Premises, Subtenant conclusively

                                       76

<PAGE>


shall be  deemed to have  accepted  the  Subleased  Premises  in their  "as-is",
then-existing  condition,  without any warranty  whatsoever of Sublandlord  with
respect thereto.

4.       Rent.

A. Rent Commencement Date. The rent commencement date ("Rent Commencement Date")
shall  be July 1,  1997,  provided  that if  Sublandlord  causes  a delay in the
completion of the Tenant Improvements by failing to respond within the permitted
time  frames  set forth in the  Tenant  Improvement  Agreement  or by failing to
exercise  reasonable  good  faith  efforts  to cause  Landlord  to  perform  its
obligations for construction of the Tenant Improvements,  there shall be one day
of delay in the Rent  Commencement  Date for each day of such  delay.  Subtenant
shall have no obligation to pay Rent (defined  below) for the period between the
Commencement Date and the Rent Commencement  Date,  although all other terms and
conditions of this Sublease shall be in full force and effect.

B. Base Monthly Rent.  Commencing on the Rent Commencement Date, Subtenant shall
pay to  Sublandlord as base monthly rent ("Base Monthly Rent") for the Subleased
Premises,  in monthly installments in advance on or before the first day of each
full  calendar  month of the Term the amounts  specified in Paragraph 5.A below.
Base Monthly Rent for any partial month shall be payable in advance and shall be
prorated  based on the actual number of days during the Sublease Term  occurring
in such month divided by the total number of days in such month.

C. First Month's Rent.  Notwithstanding  Paragraphs  4.A and 4.B hereof,  on the
date  on  which  Subtenant  executes  this  Sublease,  Subtenant  shall  pay  to
Sublandlord  the amount of $90,000,  which amount  shall be applied  against the
Base Monthly Rent for the first full calendar  month for which Base Monthly Rent
is due hereunder.

D.  Additional  Rent. In addition to the above Base Monthly Rent,  commencing on
the Rent  Commencement  Date,  Subtenant  shall pay to Sublandlord as additional
rent ("Additional  Rent"),  in monthly  installments in advance on or before the
first  day of each  full  calendar  month  of the Term all  amounts  payable  by
Sublandlord pursuant to Section 3.2 of the Master Lease, payable with respect to
the time period commencing with the Rent Commencement Date.  Additional Rent for
any partial month shall be payable in advance and shall be prorated based on the
actual number of days during the Sublease  Term  occurring in such month divided
by the total number of days in such month.  The  provisions  of Sections 3.2 and
3.3 of the Master Lease shall apply to the payment of  Additional  Rent,  except
that the timing of such payments and the periods for which such payments are due
shall  be as  set  forth  above  in  this  Paragraph  4.D.  Notwithstanding  the
foregoing,  in the event that Landlord elects to bill Sublandlord for Additional
Rent monthly,  as provided in Section  3.2(A)(1) of the Master Lease,  Subtenant
shall pay  Sublandlord  the amount set forth in such bill within  seven (7) days
after Subtenant's receipt thereof.

E.  Manner  and  Place  of  Payment.  Base  Monthly  Rent  and  Additional  Rent
(collectively, "Rent") shall be payable without notice or demand and without any
deduction,  offset,  or  abatement,  in  lawful  money of the  United  States of
America.  Subtenant  shall pay Rent directly to  Sublandlord  at the address set
forth  in the  first  paragraph  of this  Sublease,  or such  other  address  as
Sublandlord may designate in writing from time to time.

5.       Schedule of Base Monthly Rent Payments.

A. The Base  Monthly  Rent  provided  for in  Paragraph  4.B  shall be  adjusted
periodically  and the Base  Monthly  Rent for each period  shall be as set forth
below:

Lease Months 1-12

$90,000 per month


                                       77

<PAGE>

Lease Months 13 through Expiration Date:

During  the  Term,  the Base  Monthly  Rent  shall be  adjusted  on each  annual
anniversary of the Rent  Commencement  Date  (individually,  a "Rent  Adjustment
Date" and collectively,  "Rent Adjustment  Dates") by making the Rent Adjustment
as defined in  Paragraph  5.B below,  and  Subtenant  shall  thereafter  pay the
increased  amount of Base Monthly Rent as adjusted until the date next specified
as a Rent Adjustment Date.

B. Rent Adjustment. The "Rent Adjustment" as used in this Sublease shall mean to
increase the amount of Base Monthly Rent as of the  applicable  Rent  Adjustment
Date to the amount determined by multiplying the amount of the Base Monthly Rent
for the  Sublease  month  immediately  preceding  the  Rent  Adjustment  Date in
question by One Hundred Four Percent (104%).

6.  Security  Deposit.  Upon  execution  hereof,  Subtenant  shall  deposit with
Sublandlord  the  sum  of  Ninety  Thousand  Dollars  ($90,000)  (the  "Security
Deposit"),  in cash, as security for the  performance  by Subtenant of the terms
and conditions of this Sublease.  The terms and conditions of Section 3.7 of the
Master Lease shall apply to the Security  Deposit except that the amount is that
specified in this Paragraph 6.


7. Other Sublease Terms.

A.  Incorporation By Reference.  Except as otherwise  provided in this Sublease,
the  terms,  provisions  and  conditions  contained  in  the  Master  Lease  are
incorporated herein by reference,  and are made a part hereof as if set forth at
length;  provided,  however,  that:  (i)  each  reference  in such  incorporated
sections  to  "Lease"  shall be  deemed a  reference  to  "Sublease";  (ii) each
reference  to the  "Premises"  shall be  deemed a  reference  to the  "Subleased
Premises" as defined  herein;  (iii) each  reference to "Landlord"  and "Tenant"
shall be deemed a reference to "Sublandlord" and "Subtenant", respectively; (iv)
with  respect  to  work,  services,  repairs,  restoration,   insurance  or  the
performance of any other obligation of Landlord under the Master Lease, the sole
obligation of Sublandlord  shall be to request the same in writing from Landlord
as and when requested to do so by Subtenant, and to use Sublandlord's reasonable
good  faith  efforts  (provided   Subtenant  pays  all  reasonable  third  party
out-of-pocket  costs incurred by Sublandlord in connection  therewith,  provided
that Sublandlord has notified Subtenant in advance that Sublandlord  anticipates
incurring such costs and Subtenant has given its approval and further  providing
that  Sublandlord  shall be relieved of its  obligation if Subtenant  refuses to
approve  reasonable  third party  out-of-pocket  expenses) to obtain  Landlord's
performance;  (v) with  respect to any  obligation  of Subtenant to be performed
under this Sublease, wherever the Master Lease grants to Sublandlord a specified
number of days to perform  its  obligations  under the Master  Lease,  except as
otherwise  provided  herein,  Subtenant  shall  have  two (2)  fewer  days  than
Subtenant  would otherwise have to perform the  obligation,  including,  without
limitation,  curing any defaults; (vi) except as set forth in Paragraph 7(A)(iv)
above,  Sublandlord  shall have no liability  to  Subtenant  with respect to (a)
representations  and warranties made by Landlord under the Master Lease, (b) any
indemnification  obligations  of  Landlord  under  the  Master  Lease  or  other
obligations  or  liabilities  of Landlord with respect to compliance  with laws,
condition of the Subleased Premises or Hazardous  Materials,  and (c) Landlord's
repair,  maintenance,  restoration,  upkeep,  insurance and similar  obligations
under the Master Lease,  regardless of whether the  incorporation of one or more
provisions of the Master Lease into this  Sublease  might  otherwise  operate to
make Sublandlord liable therefor;  (vii) with respect to any approval or consent
required  to be  obtained  from the  "Landlord"  under the  Master  Lease,  such
approval or consent must be obtained from both Landlord and Sublandlord, and the
approval of Sublandlord may be withheld if Landlord's approval or consent is not
obtained;  and (viii) the following provisions of the Master Lease are expressly
not incorporated  herein by reference:  Section 1.1 (except for L, M, O, P, Q, R
and T), Sections 2.3, 2.4, 2.7,  13.12.D,  15, 18, 19, Exhibit "C", Exhibit "D",
all of the First Amendment to Lease except  Paragraph 1.1R, the Second Amendment
to Lease, the Third Amendment to Lease, the Option to Expand Agreement,  and the
First Amendment to Option to Expand Agreement.


                                       78

<PAGE>


The  following  provisions  of the  Master  Lease  (as  well  as  certain  other
provisions specifically identified elsewhere herein), while incorporated herein,
are modified as expressly  noted:  All  obligations  of "Landlord" in Article 5,
Section 9.2,  Article 10 and Article 11 shall remain the obligations of Landlord
and  shall  not be  deemed  to  have  become  the  obligations  of  Sublandlord,
notwithstanding  the  incorporation  of such provisions into this Sublease.  The
references  to  Article 1 in  Sections  13.10 and 14.2  shall be deemed to be to
Paragraph 1 of this  Sublease.  References to "Landlord" in the  definitions  of
"Real Property  Taxes",  "Landlord's  Insurance  Costs",  "Property  Maintenance
Costs", and "Property  Operating  Expenses" shall be deemed to refer to Landlord
only and not to Sublandlord.

B. Assumption of Obligations. This Sublease is and at all times shall be subject
and  subordinate  to the  Master  Lease and the rights of  Landlord  thereunder.
Subtenant  and  Sublandlord  shall not commit or permit to be  committed  on the
Subleased Premises any act or omission which shall violate any term or condition
of the Master  Lease.  Subtenant  hereby  expressly  assumes and agrees:  (i) to
comply with all  provisions  of the Master  Lease which are assumed by Subtenant
hereunder;  and (ii) to perform all the  obligations on the part of the "Tenant"
to be  performed  under the terms of the  Master  Lease  during the term of this
Sublease which are assumed by Subtenant hereunder. Subtenant shall not commit or
permit to be committed on the Subleased Premises any act or omission which shall
violate any term or condition of the Master Lease.  In the event of  termination
of  Sublandlord's  interest  as "Tenant"  under the Master  Lease for any reason
other  than   Sublandlord's   default  under  the  Master  Lease  which  is  not
attributable  to Subtenant's  default under this  Sublease,  this Sublease shall
terminate simultaneously with such termination of Sublandlord's interest without
any liability of  Sublandlord to Subtenant.  In the event of a conflict  between
the provisions of this Sublease and the Master Lease, as between Sublandlord and
Subtenant, the provisions of this Sublease shall control.

8.  Condition of the Subleased  Premises.  Subtenant is subleasing the Subleased
Premises on an "as-is" basis,  and  Sublandlord has made no  representations  or
warranties,  express or implied,  with respect to the condition of the Subleased
Premises  as of the  Commencement  Date.  Sublandlord  shall have no  obligation
whatsoever to make or pay the cost of any  alterations,  improvements or repairs
to the Subleased Premises,  including,  without  limitation,  any improvement or
repair required to comply with any law,  regulation,  building code or ordinance
(including the Americans with Disabilities Act of 1990).  Sublandlord shall have
no obligation to perform any of the repairs required to be performed by Landlord
under the terms of the Master Lease.

9. Tenant Improvements.  Subtenant and Sublandlord acknowledge that Landlord and
Subtenant shall have the right and obligation to construct  tenant  improvements
("Tenant  Improvements")  in  accordance  with the terms and  conditions  of the
Tenant  Improvement  Agreement  attached as Exhibit A to the Consent to Sublease
(Renco 53 [Cirrus Logic/Renco Master Lease]) executed by Sublandlord,  Subtenant
and Landlord (the "Tenant Improvement  Agreement").  So long as this Sublease is
in full  force  and  effect,  Sublandlord  and  Subtenant  shall  perform  their
respective obligations under the Tenant Improvement Agreement.

10. Effect of Conveyance. As used in this Sublease, the term "Sublandlord" means
the holder of the "Tenant's"  interest  under the Master Lease.  In the event of
any  assignment or transfer of the  "Tenant's"  interest under the Master Lease,
which  assignment  or transfer may occur at any time during the Term hereof,  as
between  Sublandlord and Subtenant,  Sublandlord shall be and hereby is entirely
relieved of all covenants and  obligations  of  Sublandlord  hereunder  accruing
after the date of such  assignment  or transfer,  provided such  transferee  has
assumed all covenants and obligations  thereafter to be performed by Sublandlord
hereunder. Sublandlord may transfer and deliver any security of Subtenant to the
transferee of the  "Tenant's"  interest  under the Master  Lease,  and thereupon
Sublandlord shall be discharged from any further liability with respect thereto.

11.  Signage.  Notwithstanding  anything  to the  contrary  set  forth  in  this
Sublease, subject to the approval of Landlord, Subtenant shall have the right to
display  its  corporate  logo  in one or  more  places  on the  exterior  of the
Subleased Premises.  Subtenant shall own such signage (and all rights incidental
to such  ownership)  and  shall  have the right to remove  such  signage  at the
expiration or sooner termination of this Sublease.

                                       79

<PAGE>

12. Broker. Sublandlord and Subtenant each represent to the other that they have
dealt with no real estate brokers,  finders, agents or salesmen other than those
identified  in  Paragraph  1 hereof.  Each party  agrees to hold the other party
harmless from and against all claims for brokerage commissions, finder's fees or
other  compensation  made by any other  agent,  broker,  salesman or finder as a
consequence  of said  party's  actions  or  dealings  with such  agent,  broker,
salesman,  or finder.  Sublandlord  shall pay any brokerage  commission  due and
payable  under  the  written  agreement  concerning  this  Sublease  between  BT
Commercial/New America Network and Cirrus Logic, Inc.

13. Sublandlord's  Option.  Sublandlord and Subtenant acknowledge that, pursuant
to the Third Amendment to Lease, Sublandlord's option to extend the Master Lease
is exercisable only if Sublandlord has terminated this Sublease as a result of a
default by Subtenant hereunder and Subtenant has vacated the Subleased Premises.

14. Representations.  Sublandlord represents and warrants to Subtenant that, (i)
to the best of  Sublandlord's  knowledge,  no default (or  condition  which will
become a default  following  the  passage of time with or without  the giving of
notice) under the Master Lease on the part of Sublandlord or Subtenant currently
exists, (ii) the copy of the Master Lease attached hereto as Exhibit A is a true
and correct copy of the entire  Master  Lease,  and (iii)  Sublandlord  will not
enter  into an  amendment  of the  Master  Lease  which  will  adversely  affect
Subtenant or Subtenant's use and occupancy of the Subleased Premises without the
prior written consent of Subtenant.

15. Direct Enforcement.  Consistent with that certain Consent to Sublease (Renco
53 [Cirrus  Logic/Renco  Master  Lease])  executed by  Landlord,  Subtenant  and
Sublandlord,  Subtenant  shall have the right to seek  performance of Landlord's
obligations  under the Master  Lease  directly  from  Landlord,  so long as such
obligations are obligations with respect to which  Sublandlord would be required
under this Sublease to seek Landlord's performance for the benefit of Subtenant.

16. Direct Payment of Rent.  Subtenant,  at Subtenant's  option,  shall have the
right to make  payments of Rent due under this  Sublease  to Landlord  under the
Master  Lease or to  perform  any other  financial  or  monetary  obligation  of
Subtenant  to  Landlord  under  the  Master  Lease on the  following  terms  and
conditions:  (a) Subtenant  shall provide  Sublandlord  with five (5) days prior
written notice of its intention to make such direct  payments or to perform such
financial or monetary obligation;  (b) Subtenant shall only pay to Landlord that
portion of the Rent that is due under the Master Lease and shall continue to pay
any overage to Sublandlord  under this Sublease;  (c) Subtenant  shall make such
payments of Rent or perform such  financial or monetary  obligations by the date
such  amounts  are due under  this  Sublease;  (d)  Subtenant  shall  deliver to
Sublandlord, at the same time Subtenant makes a payment of Rent or performs such
other financial or monetary  obligation to Landlord,  evidence that such payment
of Rent has  been  made or  performance  of such  other  financial  or  monetary
obligation has occurred;  and (e) Subtenant's  failure to make a payment of Rent
to Landlord  or to perform  such other  financial  or  monetary  obligation,  if
Subtenant has so elected,  or Subtenant's failure to deliver evidence of same as
set forth in  subsection  (d) above  shall be deemed a failure to pay Rent under
this  Sublease  and  Sublandlord  shall  have  all of the  rights  and  remedies
hereunder with respect to the failure to pay Rent.

17. Delivery of Default Notices.  Sublandlord shall deliver to Subtenant, within
two (2)  business  days of  receipt  by  Sublandlord,  copies of any  notices of
default received by Sublandlord from Landlord under the Master Lease.

18. Conditions Precedent.  Notwithstanding anything to the contrary set forth in
this  Sublease,  it shall be an express  condition  precedent  to  Sublandlord's
obligations  hereunder that, and this Sublease shall not be effective unless and
until Landlord has consented in writing to this  Sublease.  If Landlord does not
consent in writing to this Sublease within thirty (30) days after  Sublandlord's
execution of this Sublease,  then  Sublandlord may, at any time thereafter until
such  approval is obtained,  terminate  this  Sublease  upon  written  notice to
Subtenant,  whereupon  any monies  previously  paid by Subtenant to  Sublandlord
shall be reimbursed to Subtenant.

19.  Successors.  This Sublease  shall be binding on and inure to the benefit of
the parties hereto and their respective successors and permitted assigns.

                                       80
<PAGE>

20.  Entire  Agreement.  This  Sublease and the  provisions  of the Master Lease
incorporated  herein  by the  express  terms  of this  Sublease  constitute  the
complete and exclusive  agreement  among the parties with respect to the matters
contained  herein  and  supersede  all  prior  written  or  oral  agreements  or
statements by and among the parties hereto, provided that this Sublease shall be
at all times subject to all of the terms and conditions of the Master Lease.


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

SUBTENANT:                                           SUBLANDLORD:

AVANT! CORP.,                                        CIRRUS LOGIC, INC.,
a Delaware corporation                               a California corporation

By: ___________________________             By: __________________________
Printed                                              Printed
Name: ________________________              Name: ________________________

Its: ___________________________            Its: __________________________
Date: _________________________             Date: _________________________

         EXHIBIT A

         MASTER LEASE

         [to be attached]

                                       81




Exhibit 11.1  Computations of Income Per Share

                               AVANT! CORPORATION
                 STATEMENTS RE: COMPUTATIONS OF INCOME PER SHARE
                      (in thousands, except per share data)


                                                           Three months ended
                                                               March 31,
                                                        ------------------------
                                                          1997            1996
                                                        -------          -------

Net income                                              $ 6,824          $ 4,914
                                                        =======          =======

Common shares outstanding                                24,939           23,871

Common stock equivalents:
   Stock Options and Awards                               2,359            2,249
                                                        -------          -------

Total                                                    27,298           26,120
                                                        =======          =======

Net income per common share                             $  0.25          $  0.19
                                                        =======          =======





                                       16



<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
     THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
     THIS CONSOLIDATED BALANCE SHEETS AND STATEMENTS OF INCOME FILED AS PART OF
     THIS FORM 10-Q AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH 
     FINANCIAL STATEMETNS ON THIS FORM 10-Q
</LEGEND>
<MULTIPLIER>                                   1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                              DEC-31-1996
<PERIOD-START>                                 JAN-01-1997
<PERIOD-END>                                   MAR-31-1997
<CASH>                                          73,602
<SECURITIES>                                    55,883
<RECEIVABLES>                                   12,954
<ALLOWANCES>                                     1,138
<INVENTORY>                                          0
<CURRENT-ASSETS>                               155,706
<PP&E>                                          19,138
<DEPRECIATION>                                   8,772
<TOTAL-ASSETS>                                 167,093
<CURRENT-LIABILITIES>                           31,606
<BONDS>                                              0
                                0
                                          0
<COMMON>                                             3
<OTHER-SE>                                     134,887
<TOTAL-LIABILITY-AND-EQUITY>                   167,093
<SALES>                                         23,998
<TOTAL-REVENUES>                                31,193
<CGS>                                              448
<TOTAL-COSTS>                                    3,466
<OTHER-EXPENSES>                                17,993
<LOSS-PROVISION>                                   374
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 10,663
<INCOME-TAX>                                     3,839
<INCOME-CONTINUING>                              6,824
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     6,824
<EPS-PRIMARY>                                     0.25
<EPS-DILUTED>                                     0.25
        


</TABLE>


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