VITESSE SEMICONDUCTOR CORP
S-8, 1999-09-02
SEMICONDUCTORS & RELATED DEVICES
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<PAGE>

   As filed with the Securities and Exchange Commission on September 2, 1999
                                                           Registration No. 333-
- --------------------------------------------------------------------------------

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549
                            ----------------------
                                   FORM S-8
                            REGISTRATION STATEMENT
                                     Under
                          The Securities Act of 1933
                            ----------------------
                       VITESSE SEMICONDUCTOR CORPORATION
            (Exact name of Registrant as specified in its charter)
                            ----------------------

          Delaware                                          77-0138960
(State or other jurisdiction of                          (I.R.S. Employer
incorporation or organization)                        Identification Number)

                                741 Calle Plano
                         Camarillo, California  93012
                                (805) 388-3700
 (Address, including zip code, and telephone number, including area code, of
                   Registrant's principal executive offices)
                            ----------------------
          XAQTI CORPORATION 1996 STOCK PLAN, AS AMENDED NOVEMBER 1998
                           (Full title of the Plan)

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

                               Eugene F. Hovanec
                            Chief Financial Officer
                       Vitesse Semiconductor Corporation
                                741 Calle Plano
                         Camarillo, California  93012
                                (805)  388-3700
(Name, address, including zip code, and telephone number, including area code,
                             of agent for service)

                            ----------------------
                                  Copies to:
                            FRANCIS S. CURRIE, ESQ.
                          MARTIN A. WELLINGTON, ESQ.
                       Wilson Sonsini Goodrich & Rosati
                           Professional Corporation
                              650 Page Mill Road
                         Palo Alto, California  94304
                                (650) 493-9300
                             ----------------------



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

                        CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------
                                                        Proposed         Proposed
                                                        Maximum          Maximum
         Title of Each Class              Amount        Offering        Aggregate        Amount of
          of Securities to                 to be         Price           Offering       Registration
            be Registered               Registered     Per Share          Price             Fee
- --------------------------------------------------------------------------------------------------------
<S>                                     <C>            <C>            <C>                <C>
XaQti Corporation 1996 Stock Plan,
as amended November 1998
    Common Stock, $0.01 par value       134,029 (1)    $6.3513 (2)    $851,258.39 (2)     $240.00
- --------------------------------------------------------------------------------------------------------
TOTAL                                   134,029                                           $240.00
========================================================================================================
</TABLE>


(1) All options outstanding under the XaQti Corporation 1996 Stock Plan, as
    amended November 1998 (the "XaQti Options") are exercisable for the
    Registrant's Common Stock. The XaQti Options were assumed by the Registrant
    pursuant to the Registrant's acquisition of XaQti Corporation by way of
    merger, effective July 16, 1999. The exercise price per share is determined
    by dividing the exercise price for XaQti Options by the conversion ratio of
    0.04381, which was used in the merger.

(2) Estimated in accordance with Rule 457(h) under the Securities Act of 1933,
    as amended, solely for the purpose of calculating the total registration
    fee. Computated based on the weighted average exercise price.



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

                                    PART II

              INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3.  Incorporation of Documents by Reference.
         ---------------------------------------

     There are hereby incorporated by reference in this Registration Statement
the following documents and information heretofore filed with the Securities and
Exchange Commission:

     (a) The Registrant's annual report on Form 10-K for the fiscal year ended
September 30, 1998 filed pursuant to Section 13 of the Securities Exchange Act
of 1934 (the "Exchange Act").

     (b) The Registrant's Quarterly Reports on Form 10-Q for the fiscal quarters
ended December 31, 1998, March 31, 1999 and June 30, 1999, filed pursuant to
Section 13 of the Exchange Act.

     (c) The description of the Registrant's Common Stock to be offered hereby
is contained in the Registrant's Registration Statement on Form S-3 filed with
the Securities and Exchange Commission on October 23, 1996 (File No. 333-14695),
including any amendment or report filed for the purpose of updating such
description.

     All documents filed by the Registrant pursuant to Sections 13(a), 13(c), 14
and 15(d) of the Exchange Act subsequent to this registrations statement, but
prior to the filing of a post-effective amendment which indicates that all
securities offered have been sold or which deregisters all securities then
remaining unsold, shall be deemed to be incorporated by reference in this
registration statement and to be part hereof from the date of filing such
documents.

Item 4.  Description of Securities.
         -------------------------

     Not applicable.

Item 5.  Interests of Named Experts and Counsel.
         --------------------------------------

     Not applicable.

Item 6.  Indemnification of Directors and Officers.
         -----------------------------------------

     The Registrant has adopted provisions in its Amended and Restated
Certificate of Incorporation which (i) eliminate the personal liability of its
directors to the Registrant and its shareholders for monetary damages arising
from a breach of their fiduciary duties in certain circumstances; and (ii)
authorize the Registrant to indemnify its directors and officers to the fullest
extent permitted by law.  The limitation of liability does not affect the
availability of equitable remedies, such as injunctive relief or rescission.  In
addition, the Registrant's bylaws provide that the Registrant shall indemnify
its directors and officers to the fullest extent permitted by applicable law.

     The Registrant has entered into separate indemnification agreements with
each of its officers and directors that contain provisions which are in some
respects broader than the specific indemnification provisions contained in the
Delaware General Corporation Law.  The indemnification agreements may require
the Registrant, among other things, to indemnify such officers and directors
against certain liabilities that may arise by reason of their status or service
as directors or officers (other than liabilities arising from willful misconduct
of a culpable nature), to advance their expenses incurred as a result of any
proceeding against them as to which they could be indemnified, and to obtain
director's and officer's insurance, if available on reasonable terms.

                                      II-1
<PAGE>

Item 7.  Exemption from Registration Claimed.
         -----------------------------------

      Not applicable.


Item 8.  Exhibits.
         --------

<TABLE>
<CAPTION>
          Exhibit
          Number
          ------
<S>                 <C>
           4.1      XaQti Corporation 1996 Stock Plan as amended in November
                    1998 and the form of agreements thereunder filed herewith.

           5.1      Opinion of Wilson Sonsini Goodrich & Rosati, Professional
                    Corporation (Counsel to the Registrant), as to the legality
                    of securities being registered filed herewith.

          23.1      Consent of KPMG LLP filed herewith

          23.2      Consent of Wilson Sonsini Goodrich & Rosati, Professional
                    Corporation (contained in Exhibit 5.1)

          24.1      Power of Attorney (see Page II-4)
</TABLE>


Item 9.  Undertakings.
         ------------

     (a)  The undersigned Registrant hereby undertakes:

          (1) To file, during any period in which offers or sales are being
made, a post-effective amendment to this registration statement to include any
material information with respect to the plan of distribution not previously
disclosed in the registration statement or any material change to such
information in the registration statement.

          (2) That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

          (3) To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of
the offering.

     (b) The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Exchange Act of 1934 (and, where applicable, each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Exchange Act of 1934) that
is incorporated by reference in the registration statement shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

                                      II-2
<PAGE>

     (c) Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors, officers and controlling persons of
the Registrant pursuant to the foregoing provisions, or otherwise, the
Registrant has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable.  In the event that a claim for
indemnification against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a director, officer or controlling
person of the Registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Securities
Act and will be governed by the final adjudication of such issue.

                                      II-3
<PAGE>

                                   SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the Registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized in the City of Camarillo, State of California on September 2, 1999.

                                           VITESSE SEMICONDUCTOR
                                           CORPORATION

                                      By:   /s/ Eugene F. Hovanec
                                           ---------------------------------
                                           Eugene F. Hovanec
                                           Vice President, Finance and Chief
                                           Financial Officer


                               POWER OF ATTORNEY


KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints Louis R. Tomasetta and Eugene F. Hovanec, jointly
and severally, his attorneys-in-fact, each with the power of substitution, for
him in any and all capacities, to sign any amendments to this Registration
Statement on Form S-8, and to file the same, with exhibits thereto and other
documents in connection therewith, with the Securities and Exchange Commission,
hereby ratifying and confirming all that each of said attorneys-in-fact, or his
substitute or substitutes, may do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities and on the date indicated.

<TABLE>
<CAPTION>
                 SIGNATURE                                            TITLE                                  DATE
- -----------------------------------------------            ----------------------------------           ---------------
<S>                                                        <C>                                          <C>
/s/ Louis R. Tomasetta                                     President, Chief Executive                   September 2, 1999
- -----------------------------------------------            Officer, and Director (principal
Louis R. Tomasetta                                         executive officer)

/s/ Eugene F. Hovanec                                      Vice President, Finance and Chief            September 2, 1999
- -----------------------------------------------            Financial Officer (principal
Eugene F. Hovanec                                          financial and accounting officer

/s/ James A. Cole                                          Director                                     September 2, 1999
- -----------------------------------------------
James A. Cole

/s/ Pierre R. Lamond                                       Chairman of the Board of Directors           September 2, 1999
- -----------------------------------------------
Pierre R. Lamond

/s/ John C. Lewis                                          Director                                     September 2, 1999
- -----------------------------------------------
John C. Lewis

/s/ Alex Daly                                              Director                                     September 2, 1999
- -----------------------------------------------
Alex Daly
</TABLE>

                                      II-4
<PAGE>

                       VITESSE SEMICONDUCTOR CORPORATION

                       REGISTRATION STATEMENT ON FORM S-8
                       ----------------------------------

                               INDEX TO EXHIBITS


<TABLE>
<CAPTION>
     Exhibit
     Number                       Description
     ------         ----------------------------------------
<S>                 <C>
       4.1          XaQti Corporation 1996 Stock Plan as amended in November
                    1998 and the form of agreements thereunder, filed herewith.

       5.1          Opinion of Wilson Sonsini Goodrich & Rosati, Professional
                    Corporation (Counsel to the Registrant), as to the legality
                    of securities being registered filed herewith.

      23.1          Consent KPMG LLP filed herewith.

      23.2          Consent of Wilson Sonsini Goodrich & Rosati, Professional
                    Corporation (contained in Exhibit 5.1).

      24.1          Power of Attorney (see Page II-4).
</TABLE>

<PAGE>

                                  EXHIBIT 4.1
         XAQTI CORPORATION 1996 STOCK PLAN, AS AMENDED IN NOVEMBER 1998
<PAGE>

                               XAQTI CORPORATION

                                1996 STOCK PLAN

                          (as amended November 1998)

     1.  Purposes of the Plan.  The purposes of this 1996 Stock Plan are to
         --------------------
attract and retain the best available personnel for positions of substantial
responsibility, to provide additional incentive to Employees and Consultants of
the Company and its Subsidiaries and to promote the success of the Company's
business.  Options granted under the Plan may be incentive stock options (as
defined under Section 422 of the Code) or nonstatutory stock options, as
determined by the Administrator at the time of grant of an option and subject to
the applicable provisions of Section 422 of the Code, as amended, and the
regulations promulgated thereunder.  Stock purchase rights may also be granted
under the Plan.

     2.  Definitions.  As used herein, the following definitions shall apply:
         -----------

         (a) "Administrator" means the Board or any of its Committees appointed
              -------------
pursuant to Section 4 of the Plan.

         (b) "Board" means the Board of Directors of the Company.
              -----

         (c) "Code" means the Internal Revenue Code of 1986, as amended.
              ----

         (d) "Committee" means the Committee appointed by the Board of Directors
              ---------
in accordance with Section 4(a) of the Plan.

         (e) "Common Stock" means the Common Stock of the Company.
              ------------

         (f) "Company" means XaQti Corporation, a California corporation.
              -------

         (g) "Consultant" means any person, including an advisor, who is
              ----------
engaged by the Company or any Parent or Subsidiary to render services and is
compensated for such services, and any director of the Company whether
compensated for such services or not, provided that in the event that the
Company registers any class of any equity security pursuant to the Exchange Act
and the Administrator shall so determine, the term Consultant shall thereafter
not include directors who are not compensated for their services or are paid
only a director's fee by the Company.

         (h) "Continuous Status as an Employee or Consultant" means the absence
              ----------------------------------------------
of any interruption or termination of service as an Employee or Consultant.
Continuous Status as an Employee or Consultant shall not be considered
interrupted in the case of:  (i) sick leave; (ii) military leave; (iii) any
other leave of absence approved by the Administrator, provided that such leave
is for a period of not more than ninety (90) days, unless reemployment upon the
expiration of such leave is guaranteed by contract or statute, or unless
provided otherwise pursuant to Company policy adopted from time to time; or (iv)
in the case of transfers between locations of the Company or between the
Company, its Subsidiaries or their respective
<PAGE>

successors. For purposes of this Plan, a change in status from an Employee to a
Consultant or from a Consultant to an Employee will not constitute an
interruption of Continuous Status as an Employee or Consultant.

         (i) "Employee" means any person, including officers and directors,
              --------
employed by the Company or any Parent or Subsidiary of the Company, with the
status of employment determined based upon such minimum number of hours or
periods worked as shall be determined by the Administrator in its discretion,
subject to any requirements of the Code.  The payment by the Company of a
director's fee to a Director shall not be sufficient to constitute "employment"
of such Director by the Company.

         (j) "Exchange Act" means the Securities Exchange Act of 1934, as
              ------------
amended.

         (k) "Fair Market Value" means, as of any date, the fair market value
              -----------------
of Common Stock determined as follows:

              (i) If the Common Stock is listed on any established stock
exchange or a national market system including without limitation the National
Market of the National Association of Securities Dealers, Inc. Automated
Quotation ("Nasdaq") System, its Fair Market Value shall be the closing sales
            ------
price for such stock (or the closing bid, if no sales were reported), as quoted
on such system or exchange, or the exchange with the greatest volume of trading
in Common Stock for the last market trading day prior to the time of
determination, as reported in The Wall Street Journal or such other source as
the Administrator deems reliable;

              (ii) If the Common Stock is quoted on the Nasdaq System (but not
on the National Market thereof) or regularly quoted by a recognized securities
dealer but selling prices are not reported, its Fair Market Value shall be the
mean between the high bid and low asked prices for the Common Stock for the last
market trading day prior to the time of determination, as reported in The Wall
Street Journal or such other source as the Administrator deems reliable; or

              (iii) In the absence of an established market for the Common
Stock, the Fair Market Value thereof shall be determined in good faith by the
Administrator.

         (l) "Incentive Stock Option" means an Option intended to qualify as an
              ----------------------
incentive stock option within the meaning of Section 422 of the Code, as
designated in the applicable written option agreement.

         (m) "Nonstatutory Stock Option" means an Option not intended to
              -------------------------
qualify as an Incentive Stock Option, as designated in the applicable written
option agreement.

         (n) "Option" means a stock option granted pursuant to the Plan.
              ------

         (o) "Optioned Stock" means the Common Stock subject to an Option or a
              --------------
Stock Purchase Right.
<PAGE>

         (p) "Optionee" means an Employee or Consultant who receives an Option
              --------
or a Stock Purchase Right.

         (q) "Parent" means a "parent corporation", whether now or hereafter
              ------
existing, as defined in Section 424(e) of the Code, or any successor provision.

         (r) "Plan" means this 1996 Stock Plan.
              ----

         (s) "Reporting Person" means an officer, director, or greater than ten
              ----------------
percent shareholder of the Company within the meaning of Rule 16a-2 under the
Exchange Act, who is required to file reports pursuant to Rule 16a-3 under the
Exchange Act.

         (t) "Restricted Stock" means shares of Common Stock acquired pursuant
              ----------------
to a grant of a Stock Purchase Right under Section 10 below.

         (u) "Rule 16b-3" means Rule 16b-3 promulgated under the Exchange Act,
              ----------
as the same may be amended from time to time, or any successor provision.

         (v) "Share" means a share of the Common Stock, as adjusted in
              -----
accordance with Section 12 of the Plan.

         (w) "Stock Exchange" means any stock exchange or consolidated stock
              --------------
price reporting system on which prices for the Common Stock are quoted at any
given time.

         (x) "Stock Purchase Right" means the right to purchase Common Stock
              --------------------
pursuant to Section 10 below.

         (y) "Subsidiary" means a "subsidiary corporation," whether now or
              ----------
hereafter existing, as defined in Section 424(f) of the Code, or any successor
provision.

     3.   Stock Subject to the Plan.  Subject to the provisions of Section 12 of
          -------------------------
the Plan, the maximum aggregate number of Shares that may be optioned and sold
under the Plan is 5,600,000 shares of Common Stock.  The Shares may be
authorized, but unissued, or reacquired Common Stock.  If an Option should
expire or become unexercisable for any reason without having been exercised in
full, the unpurchased Shares that were subject thereto shall, unless the Plan
shall have been terminated, become available for future grant under the Plan.
In addition, any Shares of Common Stock which are retained by the Company upon
exercise of an Option or Stock Purchase Right in order to satisfy the exercise
or purchase price for such Option or Stock Purchase Right or any withholding
taxes due with respect to such exercise shall be treated as not issued and shall
continue to be available under the Plan.  Shares repurchased by the Company
pursuant to any repurchase right which the Company may have shall not be
available for future grant under the Plan.
<PAGE>

     4.   Administration of the Plan.
          --------------------------

          (a) Initial Plan Procedure.  Prior to the date, if any, upon which the
              ----------------------
Company becomes subject to the Exchange Act, the Plan shall be administered by
the Board or a committee appointed by the Board.

          (b) Plan Procedure After the Date, if any, Upon Which the Company
              -------------------------------------------------------------
Becomes Subject to the Exchange Act.
- -----------------------------------

              (i) Multiple Administrative Bodies.  If permitted by Rule 16b-3,
                  ------------------------------
grants under the Plan may be made by different bodies with respect to directors,
non-director officers and Employees or Consultants who are not Reporting
Persons.

               (ii) Administration With Respect to Reporting Persons.  With
                    ------------------------------------------------
respect to grants of Options or Stock Purchase Rights to Employees who are
Reporting Persons, such grants shall be made by (A) the Board if the Board may
make grants to Reporting Persons under the Plan in compliance with Rule 16b-3,
or (B) a committee designated by the Board to make grants to Reporting Persons
under the Plan, which committee shall be constituted in such a manner as to
permit grants under the Plan to comply with Rule 16b-3. Once appointed, such
committee shall continue to serve in its designated capacity until otherwise
directed by the Board. From time to time the Board may increase the size of the
committee and appoint additional members thereof, remove members (with or
without cause) and appoint new members in substitution therefor, fill vacancies,
however caused, and remove all members of the committee and thereafter directly
make grants to Reporting Persons under the Plan, all to the extent permitted by
Rule 16b-3.

               (iii) Administration With Respect to Consultants and Other
                     ----------------------------------------------------
Employees.  With respect to grants of Options or Stock Purchase Rights to
- ---------
Employees or Consultants who are not Reporting Persons, the Plan shall be
administered by (A) the Board or (B) a committee designated by the Board, which
committee shall be constituted in such a manner as to satisfy the legal
requirements relating to the administration of incentive stock option plans, if
any, of California corporate and securities laws, of the Code and of any
applicable Stock Exchange (the "Applicable Laws").  Once appointed, such
                                ---------------
Committee shall continue to serve in its designated capacity until otherwise
directed by the Board.  From time to time the Board may increase the size of the
Committee and appoint additional members thereof, remove members (with or
without cause) and appoint new members in substitution therefor, fill vacancies,
however caused, and remove all members of the Committee and thereafter directly
administer the Plan, all to the extent permitted by the Applicable Laws.

          (c) Powers of the Administrator.  Subject to the provisions of the
              ---------------------------
Plan and in the case of a Committee, the specific duties delegated by the Board
to such Committee, and subject to the approval of any relevant authorities,
including the approval, if required, of any Stock Exchange, the Administrator
shall have the authority, in its discretion:

                (i) to determine the Fair Market Value of the Common Stock, in
accordance with Section 2(k) of the Plan;
<PAGE>

                (ii) to select the Consultants and Employees to whom Options
and Stock Purchase Rights may from time to time be granted hereunder;

                (iii) to determine whether and to what extent Options and Stock
Purchase Rights or any combination thereof are granted hereunder;

                (iv) to determine the number of shares of Common Stock to be
covered by each such award granted hereunder;

                (v) to approve forms of agreement for use under the Plan;

                (vi) to determine the terms and conditions, not inconsistent
with the terms of the Plan, of any award granted hereunder;

                (vii) to determine whether and under what circumstances an
Option may be settled in cash under Section 9(f) instead of Common Stock;

                (viii) to reduce the exercise price of any Option to the then
current Fair Market Value if the Fair Market Value of the Common Stock covered
by such Option shall have declined since the date the Option was granted;

                (ix) to determine the terms and restrictions applicable to Stock
Purchase Rights and the Restricted Stock purchased by exercising such Stock
Purchase Rights; and

                (x) to construe and interpret the terms of the Plan and awards
granted pursuant to the Plan; and

                (xi) in order to fulfill the purposes of the Plan and without
amending the Plan, to modify grants of Options or Stock Purchase Rights to
participants who are foreign nationals or employed outside of the United States
in order to recognize differences in local law, tax policies or customs.

         (d) Effect of Administrator's Decision.  All decisions, determinations
             ----------------------------------
and interpretations of the Administrator shall be final and binding on all
holders of Options or Stock Purchase Rights.

     5.  Eligibility.
         -----------

         (a) Recipients of Grants.  Nonstatutory Stock Options and Stock
             --------------------
Purchase Rights may be granted to Employees and Consultants.  Incentive Stock
Options may be granted only to Employees.  An Employee or Consultant who has
been granted an Option or Stock Purchase Right may, if he or she is otherwise
eligible, be granted additional Options or Stock Purchase Rights.

         (b) Type of Option.  Each Option shall be designated in the written
             --------------
option agreement as either an Incentive Stock Option or a Nonstatutory Stock
Option.  However,
<PAGE>

notwithstanding such designations, to the extent that the aggregate Fair Market
Value of Shares with respect to which Options designated as Incentive Stock
Options are exercisable for the first time by any Optionee during any calendar
year (under all plans of the Company or any Parent or Subsidiary) exceeds
$100,000, such excess Options shall be treated as Nonstatutory Stock Options.
For purposes of this Section 5(b), Incentive Stock Options shall be taken into
account in the order in which they were granted, and the Fair Market Value of
the Shares subject to an Incentive Stock Option shall be determined as of the
date of the grant of such Option.

          (c) The Plan shall not confer upon any Optionee any right with respect
to continuation of employment or consulting relationship with the Company, nor
shall it interfere in any way with such Optionee's right or the Company's right
to terminate his or her employment or consulting relationship at any time, with
or without cause.

     6.   Term of Plan.  The Plan shall become effective upon the earlier to
          ------------
occur of its adoption by the Board of Directors or its approval by the
shareholders of the Company as described in Section 19 of the Plan.  It shall
continue in effect for a term of ten (10) years unless sooner terminated under
Section 15 of the Plan.

     7.   Term of Option.  The term of each Option shall be the term stated in
          --------------
the Option Agreement; provided, however, that the term shall be no more than ten
(10) years from the date of grant thereof or such shorter term as may be
provided in the Option Agreement and provided further that, in the case of an
Option granted to an Optionee who, at the time the Option is granted, owns stock
representing more than ten percent (10%) of the total combined voting power of
all classes of stock of the Company or any Parent or Subsidiary, the term of the
Option shall be five (5) years from the date of grant thereof or such shorter
term as may be provided in the written option agreement.

     8.   Option Exercise Price and Consideration.
          ---------------------------------------

          (a) The per share exercise price for the Shares to be issued pursuant
to exercise of an Option shall be such price as is determined by the Board and
set forth in the applicable agreement, but shall be subject to the following:

                (i) In the case of an Incentive Stock Option that is:

                    (A) granted to an Employee who, at the time of the grant of
such Incentive Stock Option, owns stock representing more than ten percent (10%)
of the total combined voting power of all classes of stock of the Company or any
Parent or Subsidiary, the per Share exercise price shall be no less than 110% of
the Fair Market Value per Share on the date of grant.

                    (B) granted to any other Employee, the per Share exercise
price shall be no less than 100% of the Fair Market Value per Share on the date
of grant.

                (ii) In the case of a Nonstatutory Stock Option that is:
<PAGE>

                     (A) granted to a person who, at the time of the grant of
such Option, owns stock representing more than ten percent (10%) of the total
combined voting power of all classes of stock of the Company or any Parent or
Subsidiary, the per Share exercise price shall be no less than 110% of the Fair
Market Value per Share on the date of the grant.

                     (B) granted to any person, the per Share exercise price
shall be no less than 85% of the Fair Market Value per Share on the date of
grant.

          (b) The consideration to be paid for the Shares to be issued upon
exercise of an Option, including the method of payment, shall be determined by
the Administrator (and, in the case of an Incentive Stock Option, shall be
determined at the time of grant) and may consist entirely of (1) cash, (2)
check, (3) promissory note, (4) other Shares that (x) in the case of Shares
acquired upon exercise of an Option, have been owned by the Optionee for more
than six months on the date of surrender or such other period as may be required
to avoid a charge to the Company's earnings, and (y) have a Fair Market Value on
the date of surrender equal to the aggregate exercise price of the Shares as to
which such Option shall be exercised, (5) authorization for the Company to
retain from the total number of Shares as to which the Option is exercised that
number of Shares having a Fair Market Value on the date of exercise equal to the
exercise price for the total number of Shares as to which the Option is
exercised, (6) delivery of a properly executed exercise notice together with
such other documentation as the Administrator and the broker, if applicable,
shall require to effect an exercise of the Option and delivery to the Company of
the sale or loan proceeds required to pay the exercise price and any applicable
income or employment taxes, (7) delivery of an irrevocable subscription
agreement for the Shares that irrevocably obligates the option holder to take
and pay for the Shares not more than twelve months after the date of delivery of
the subscription agreement, (8) any combination of the foregoing methods of
payment, or (9) such other consideration and method of payment for the issuance
of Shares to the extent permitted under Applicable Laws.  In making its
determination as to the type of consideration to accept, the Administrator shall
consider if acceptance of such consideration may be reasonably expected to
benefit the Company.

     9.   Exercise of Option.
          ------------------

          (a) Procedure for Exercise; Rights as a Shareholder.  Any Option
              -----------------------------------------------
granted hereunder shall be exercisable at such times and under such conditions
as determined by the Administrator, and reflected in the written option
agreement, which may include vesting requirements and/or performance criteria
with respect to the Company and/or the Optionee; provided that such Option shall
become exercisable at the rate of at least twenty percent (20%) per year over
five (5) years from the date the Option is granted.

               An Option may not be exercised for a fraction of a Share.

          An Option shall be deemed to be exercised when written notice of such
exercise has been given to the Company in accordance with the terms of the
Option by the person entitled to exercise the Option and the Company has
received full payment for the Shares with respect to which the Option is
exercised.  Full payment may, as authorized by the Board, consist of any
consideration and method of payment allowable under Section 8(b) of the Plan.
<PAGE>

Until the issuance (as evidenced by the appropriate entry on the books of the
Company or of a duly authorized transfer agent of the Company) of the stock
certificate evidencing such Shares, no right to vote or receive dividends or any
other rights as a shareholder shall exist with respect to the Optioned Stock,
not withstanding the exercise of the Option.  The Company shall issue (or cause
to be issued) such stock certificate promptly upon exercise of the Option.  No
adjustment will be made for a dividend or other right for which the record date
is prior to the date the stock certificate is issued, except as provided in
Section 12 of the Plan.

          Exercise of an Option in any manner shall result in a decrease in the
number of Shares that thereafter may be available, both for purposes of the Plan
and for sale under the Option, by the number of Shares as to which the Option is
exercised.

          (b) Termination of Employment or Consulting Relationship.  Subject to
              ----------------------------------------------------
Section 9(c), in the event of termination of an Optionee's Continuous Status as
an Employee or Consultant with the Company, such Optionee may, but only within
three (3) months (or such other period of time not less than thirty (30) days as
is determined by the Administrator, with such determination in the case of an
Incentive Stock Option being made at the time of grant of the Option and not
exceeding three (3) months) after the date of such termination (but in no event
later than the expiration date of the term of such Option as set forth in the
Option Agreement), exercise his or her Option to the extent that the Optionee
was entitled to exercise it at the date of such termination.  To the extent that
Optionee was not entitled to exercise the Option at the date of such
termination, or if Optionee does not exercise such Option to the extent so
entitled within the time specified herein, the Option shall terminate.  No
termination shall be deemed to occur and this Section 9(b) shall not apply if
(i) the Optionee is a Consultant who becomes an Employee; or (ii) the Optionee
is an Employee who becomes a Consultant.

          (c)  Disability of Optionee.
               ----------------------

               (i) Notwithstanding Section 9(b) above, in the event of
termination of an Optionee's Continuous Status as an Employee or Consultant as a
result of his or her total and permanent disability (within the meaning of
Section 22(e)(3) of the Code), Optionee may, but only within twelve (12) months
from the date of such termination (but in no event later than the expiration
date of the term of such Option as set forth in the Option Agreement), exercise
the Option to the extent otherwise entitled to exercise it at the date of such
termination. To the extent that Optionee was not entitled to exercise the Option
at the date of termination, or if Optionee does not exercise such Option to the
extent so entitled within the time specified herein, the Option shall terminate.

               (ii) In the event of termination of an Optionee's Continuous
Status as an Employee or Consultant as a result of a disability which does not
fall within the meaning of total and permanent disability (as set forth in
Section 22(e)(3) of the Code), Optionee may, but only within six (6) months from
the date of such termination (but in no event later than the expiration date of
the term of such Option as set forth in the Option Agreement), exercise the
Option to the extent otherwise entitled to exercise it at the date of such
termination. However, to the extent that such Optionee fails to exercise an
Option which is an Incentive Stock Option
<PAGE>

("ISO") (within the meaning of Section 422 of the Code) within three (3) months
  ---
of the date of such termination, the Option will not qualify for ISO treatment
under the Code. To the extent that Optionee was not entitled to exercise the
Option at the date of termination, or if Optionee does not exercise such Option
to the extent so entitled within six months (6) from the date of termination,
the Option shall terminate.

          (d) Death of Optionee.  In the event of the death of an Optionee
              -----------------
during the period of Continuous Status as an Employee or Consultant since the
date of grant of the Option, or within thirty (30) days following termination of
Optionee's Continuous Status as an Employee or Consultant, the Option may be
exercised, at any time within six (6) months following the date of death (but in
no event later than the expiration date of the term of such Option as set forth
in the Option Agreement), by Optionee's estate or by a person who acquired the
right to exercise the Option by bequest or inheritance, but only to the extent
of the right to exercise that had accrued at the date of death or, if earlier,
the date of termination of Optionee's Continuous Status as an Employee or
Consultant.  To the extent that Optionee was not entitled to exercise the Option
at the date of death or termination, as the case may be, or if Optionee does not
exercise such Option to the extent so entitled within the time specified herein,
the Option shall terminate.

          (e) Rule 16b-3.  Options granted to Reporting Persons shall comply
              ----------
with Rule 16b-3 and shall contain such additional conditions or restrictions as
may be required thereunder to qualify for the maximum exemption for Plan
transactions.

          (f) Buyout Provisions.  The Administrator may at any time offer to buy
              -----------------
out for a payment in cash or Shares, an Option previously granted, based on such
terms and conditions as the Administrator shall establish and communicate to the
Optionee at the time that such offer is made.

     10.  Stock Purchase Rights.
          ---------------------

          (a) Rights to Purchase.  Stock Purchase Rights may be issued either
              ------------------
alone, in addition to, or in tandem with other awards granted under the Plan
and/or cash awards made outside of the Plan.  After the Administrator determines
that it will offer Stock Purchase Rights under the Plan, it shall advise the
offeree in writing of the terms, conditions and restrictions related to the
offer, including the number of Shares that such person shall be entitled to
purchase, the price to be paid (which price shall not be less than 85% of the
Fair Market Value of the Shares as of the date of the offer, or, in the case of
a person owning stock representing more than ten percent (10%) of the total
combined voting power of all classes of stock of the Company or any Parent or
Subsidiary, the price shall not be less than one hundred percent (100%) of the
Fair Market Value of the Shares as of the date of the offer), and the time
within which such person must accept such offer, which shall in no event exceed
thirty (30) days from the date upon which the Administrator made the
determination to grant the Stock Purchase Right.  The offer shall be accepted by
execution of a Restricted Stock purchase agreement in the form determined by the
Administrator.  Shares purchased pursuant to the grant of a Stock Purchase Right
shall be referred to herein as "Restricted Stock."
<PAGE>

          (b) Repurchase Option.  Unless the Administrator determines otherwise,
              -----------------
the Restricted Stock purchase agreement shall grant the Company a repurchase
option exercisable upon the voluntary or involuntary termination of the
purchaser's employment with the Company for any reason (including death or
disability).  The purchase price for Shares repurchased pursuant to the
Restricted Stock purchase agreement shall be the original purchase price paid by
the purchaser and may be paid by cancellation of any indebtedness of the
purchaser to the Company.  The repurchase option shall lapse at such rate as the
Administrator may determine, but at a minimum rate of 20% per year.

          (c) Other Provisions.  The Restricted Stock purchase agreement shall
              ----------------
contain such other terms, provisions and conditions not inconsistent with the
Plan as may be determined by the Administrator in its sole discretion.  In
addition, the provisions of Restricted Stock purchase agreements need not be the
same with respect to each purchaser.

          (d) Rights as a Shareholder.  Once the Stock Purchase Right is
              -----------------------
exercised, the purchaser shall have the rights equivalent to those of a
shareholder, and shall be a shareholder when his or her purchase is entered upon
the records of the duly authorized transfer agent of the Company.  No adjustment
will be made for a dividend or other right for which the record date is prior to
the date the Stock Purchase Right is exercised, except as provided in Section 12
of the Plan.

     11.  Stock Withholding to Satisfy Withholding Tax Obligations.  At the
          --------------------------------------------------------
discretion of the Administrator, Optionees may satisfy withholding obligations
as provided in this paragraph.  When an Optionee incurs tax liability in
connection with an Option or Stock Purchase Right, which tax liability is
subject to tax withholding under applicable tax laws, and the Optionee is
obligated to pay the Company an amount required to be withheld under applicable
tax laws, the Optionee may satisfy the withholding tax obligation by one or some
combination of the following methods:  (a) by cash payment, or (b) out of
Optionee's current compensation, (c) if permitted by the Administrator, in its
discretion, by surrendering to the Company Shares that (i) in the case of Shares
previously acquired from the Company, have been owned by the Optionee for more
than six months on the date of surrender, and (ii) have a fair market value on
the date of surrender equal to or less than Optionee's marginal tax rate times
the ordinary income recognized, or (d) by electing to have the Company withhold
from the Shares to be issued upon exercise of the Option, or the Shares to be
issued in connection with the Stock Purchase Right, if any, that number of
Shares having a fair market value equal to the amount required to be withheld.
For this purpose, the fair market value of the Shares to be withheld shall be
determined on the date that the amount of tax to be withheld is to be determined
(the "Tax Date").
      --------

          Any surrender by a Reporting Person of previously owned Shares to
satisfy tax withholding obligations arising upon exercise of this Option must
comply with the applicable provisions of Rule 16b-3.
<PAGE>

          All elections by an Optionee to have Shares withheld to satisfy tax
withholding obligations shall be made in writing in a form acceptable to the
Administrator and shall be subject to the following restrictions:

          (a) the election must be made on or prior to the applicable Tax Date;

          (b) once made, the election shall be irrevocable as to the particular
Shares of the Option or Stock Purchase Right as to which the election is made;
and

          (c) all elections shall be subject to the consent or disapproval of
the Administrator.

          In the event the election to have Shares withheld is made by an
Optionee and the Tax Date is deferred under Section 83 of the Code because no
election is filed under Section 83(b) of the Code, the Optionee shall receive
the full number of Shares with respect to which the Option or Stock Purchase
Right is exercised but such Optionee shall be unconditionally obligated to
tender back to the Company the proper number of Shares on the Tax Date.

     12.  Adjustments Upon Changes in Capitalization, Merger or Certain Other
          -------------------------------------------------------------------
Transactions.
- ------------

          (a) Changes in Capitalization.  Subject to any required action by the
              -------------------------
shareholders of the Company, the number of shares of Common Stock covered by
each outstanding Option or Stock Purchase Right, and the number of shares of
Common Stock that have been authorized for issuance under the Plan but as to
which no Options or Stock Purchase Rights have yet been granted or that have
been returned to the Plan upon cancellation or expiration of an Option or Stock
Purchase Right, as well as the price per share of Common Stock covered by each
such outstanding Option or Stock Purchase Right, shall be proportionately
adjusted for any increase or decrease in the number of issued shares of Common
Stock resulting from a stock split, reverse stock split, stock dividend,
combination, recapitalization or reclassification of the Common Stock, or any
other increase or decrease in the number of issued shares of Common Stock
effected without receipt of consideration by the Company; provided, however,
that conversion of any convertible securities of the Company shall not be deemed
to have been "effected without receipt of consideration."  Such adjustment shall
be made by the Board, whose determination in that respect shall be final,
binding and conclusive.  Except as expressly provided herein, no issuance by the
Company of shares of stock of any class, or securities convertible into shares
of stock of any class, shall affect, and no adjustment by reason thereof shall
be made with respect to, the number or price of shares of Common Stock subject
to an Option or Stock Purchase Right.

          (b) Dissolution or Liquidation.  In the event of the proposed
              --------------------------
dissolution or liquidation of the Company, the Board shall notify the Optionee
at least fifteen (15) days prior to such proposed action.  To the extent it has
not been previously exercised, the Option or Stock Purchase Right will terminate
immediately prior to the consummation of such proposed action.
<PAGE>

          (c) Merger or Sale of Assets.  In the event of a proposed sale of all
              ------------------------
or substantially all of the Company's assets or a merger of the Company with or
into another corporation where the successor corporation issues its securities
to the Company's shareholders, each outstanding Option or Stock Purchase Right
shall be assumed or an equivalent option or right shall be substituted by such
successor corporation or a parent or subsidiary of such successor corporation,
unless the successor corporation does not agree to assume the Option or Stock
Purchase Right or to substitute an equivalent option or right, in which case
such Option or Stock Purchase Right shall terminate upon the consummation of the
merger or sale of assets.

          (d) Certain Distributions.  In the event of any distribution to the
              ---------------------
Company's shareholders of securities of any other entity or other assets (other
than dividends payable in cash or stock of the Company) without receipt of
consideration by the Company, the Administrator may, in its discretion,
appropriately adjust the price per share of Common Stock covered by each
outstanding Option or Stock Purchase Right to reflect the effect of such
distribution.

     13.  Non-Transferability of Options and Stock Purchase Rights.  Options and
          --------------------------------------------------------
Stock Purchase Rights may not be sold, pledged, assigned, hypothecated,
transferred, or disposed of in any manner other than by will or by the laws of
descent or distribution and may be exercised or purchased during the lifetime of
the Optionee or Stock Purchase Rights Holder only by the Optionee or Stock
Purchase Rights Holder.

     14.  Time of Granting Options and Stock Purchase Rights.  The date of grant
          --------------------------------------------------
of an Option or Stock Purchase Right shall, for all purposes, be the date on
which the Administrator makes the determination granting such Option or Stock
Purchase Right, or such other date as is determined by the Board.  Notice of the
determination shall be given to each Employee or Consultant to whom an Option or
Stock Purchase Right is so granted within a reasonable time after the date of
such grant.

     15.  Amendment and Termination of the Plan.
          -------------------------------------

          (a) Authority to Amend or Terminate.  The Board may at any time amend,
              -------------------------------
alter, suspend or discontinue the Plan, but no amendment, alteration, suspension
or discontinuation shall be made that would impair the rights of any Optionee
under any grant theretofore made, without his or her consent.  In addition, to
the extent necessary and desirable to comply with Rule 16b-3 or with Section 422
of the Code (or any other applicable law or regulation, including the
requirements of any Stock Exchange), the Company shall obtain shareholder
approval of any Plan amendment in such a manner and to such a degree as
required.

          (b) Effect of Amendment or Termination.  No amendment or termination
              ----------------------------------
of the Plan shall adversely affect Options already granted, unless mutually
agreed otherwise between the Optionee and the Board, which agreement must be in
writing and signed by the Optionee and the Company.

     16.  Conditions Upon Issuance of Shares.  Shares shall not be issued
          ----------------------------------
pursuant to the exercise of an Option or Stock Purchase Right unless the
exercise of such Option or Stock Purchase Right and the issuance and delivery of
such Shares pursuant thereto shall comply with
<PAGE>

all relevant provisions of law, including, without limitation, the Securities
Act of 1933, as amended, the Exchange Act, the rules and regulations promulgated
thereunder, and the requirements of any Stock Exchange. As a condition to the
exercise of an Option, the Company may require the person exercising such Option
to represent and warrant at the time of any such exercise that the Shares are
being purchased only for investment and without any present intention to sell or
distribute such Shares if, in the opinion of counsel for the Company, such a
representation is required by law.

     17.  Reservation of Shares.  The Company, during the term of this Plan,
          ---------------------
will at all times reserve and keep available such number of Shares as shall be
sufficient to satisfy the requirements of the Plan.  The inability of the
Company to obtain authority from any regulatory body having jurisdiction, which
authority is deemed by the Company's counsel to be necessary to the lawful
issuance and sale of any Shares hereunder, shall relieve the Company of any
liability in respect of the failure to issue or sell such Shares as to which
such requisite authority shall not have been obtained.

     18.  Agreements.  Options and Stock Purchase Rights shall be evidenced by
          ----------
written agreements in such form as the Administrator shall approve from time to
time.

     19.  Shareholder Approval.  Continuance of the Plan shall be subject to
          --------------------
approval by the shareholders of the Company within twelve (12) months before or
after the date the Plan is adopted.  Such shareholder approval shall be obtained
in the degree and manner required under applicable state and federal law and the
rules of any Stock Exchange upon which the Common Stock is listed.  All Options
and Stock Purchase Rights issued under the Plan shall become void in the event
such approval is not obtained.

     20.  Information to Optionees and Purchasers.  The Company shall provide
          ---------------------------------------
financial statements at least annually to each Optionee and to each individual
who acquired Shares Pursuant to the Plan, during the period such Optionee or
purchaser has one or more Options or Stock Purchase Rights outstanding, and in
the case of an individual who acquired Shares pursuant to the Plan, during the
period such individual owns such Shares.  The Company shall not be required to
provide such information if the issuance of Options or Stock Purchase Rights
under the Plan is limited to key employees whose duties in connection with the
Company assure their access to equivalent information.
<PAGE>

                               XAQTI CORPORATION

                                1996 STOCK PLAN

                         NOTICE OF STOCK OPTION GRANT

((Optionee))
((OptioneeAddress1))
((OptioneeAddress2))

     You have been granted an option to purchase Common Stock of XaQti
Corporation (the "Company") as follows:
                  -------

     Board Approval Date:            ((BoardApprovalDate))

     Date of Grant (Later of Board
     Approval Date or Commence-
     ment of Employment/Consulting): ((GrantDate))

     Vesting Commencement Date:      ((VestingCommenceDate))

     Exercise Price per Share:       (($ExercisePrice))

     Total Number of Shares Granted: ((TotalExercisePrice))

     Total Exercise Price:           (($TotalExercisePrice))

     Type of Option:                 ((IncentiveNonstatutory)) Stock Option

     Term/Expiration Date:           ((ExpirDate))


     Vesting Schedule:               This Option may be exercised, in whole or
                                     in part, in accordance with the following
                                     schedule: 1/4th of the Shares subject to
                                     the Option shall vest on the 12 month
                                     anniversary of the Vesting Commencement
                                     Date and 1/48th of the total number of
                                     Shares subject to the Option shall vest on
                                     the Vesting Commencement Date of each month
                                     thereafter.

     Termination Period:             Option may be exercised for 30 days after
                                     termination of employment or consulting
                                     relationship except as set out in Sections
                                     7 and 8 of the Stock Option Agreement (but
                                     in no event later than the Expiration
                                     Date).
<PAGE>

     By your signature and the signature of the Company's representative below,
you and the Company agree that this option is granted under and governed by the
terms and conditions of the 1996 Stock Plan and the Stock Option Agreement, all
of which are attached and made a part of this document.


Optionee:                           XAQTI CORPORATION


                                    By:
_________________________________      _________________________________
Signature


                                    Title:
_________________________________          _____________________________
Print Name


                                      -2-
<PAGE>

                               XAQTI CORPORATION

                                1996 STOCK PLAN

                            STOCK OPTION AGREEMENT


     1.   Grant of Option.  XaQti Corporation a California corporation (the
          ---------------
"Company"), hereby grants to Optionee named in the Notice of Stock Option Grant
- -------
(the "Optionee"), an option (the "Option") to purchase a total number of shares
      --------                    ------
of Common Stock (the "Shares") set forth in the Notice of Stock Option Grant, at
                      ------
the exercise price per share set forth in the Notice of Stock Option Grant (the
"Exercise Price") subject to the terms, definitions and provisions of the XaQti
 --------------
Corporation 1996 Stock Plan (the "Plan") adopted by the Company, which is
                                  ----
incorporated herein by reference.  Unless otherwise defined herein, the terms
defined in the Plan shall have the same defined meanings in this Option.

          If designated an Incentive Stock Option, this Option is intended to
qualify as an Incentive Stock Option as defined in Section 422 of the Code.

     2.   Exercise of Option.  This Option shall be exercisable during its Term
          ------------------
in accordance with the Exercise Schedule set out in the Notice of Stock Option
Grant and with the provisions of Section 9 of the Plan as follows:

          (a)  Right to Exercise.
               -----------------

               (i) This Option may not be exercised for a fraction of a share.

               (ii) In the event of Optionee's death, disability or other
termination of employment, the exercisability of the Option is governed by
Sections 6, 7 and 8 below, subject to the limitation contained in Section
2(a)(i).

               (iii) In no event may this Option be exercised after the date of
expiration of the Term of this Option as set forth in the Notice of Stock Option
Grant.

          (b) Method of Exercise.  This Option shall be exercisable by written
              ------------------
notice (in the form attached as Exhibit A) which shall state the election to
                                ---------
exercise the Option, the number of Shares in respect of which the Option is
being exercised, and such other representations and agreements as to the
holder's investment intent with respect to such shares of Common Stock as may be
required by the Company pursuant to the provisions of the Plan.  Such written
notice shall be signed by Optionee and shall be delivered in person or by
certified mail to the Secretary of the Company.  The written notice shall be
accompanied by payment of the Exercise Price.  This Option shall be deemed to be
exercised upon receipt by the Company of such written notice accompanied by the
Exercise Price.

          No Shares will be issued pursuant to the exercise of an Option unless
such issuance and such exercise shall comply with all relevant provisions of
applicable law and the requirements of any stock exchange upon which the Shares
may then be listed.  Assuming
<PAGE>

such compliance, for income tax purposes the Shares shall be considered
transferred to Optionee on the date on which the Option is exercised with
respect to such Shares.

     3.   Optionee's Representations.  In the event the Shares purchasable
          --------------------------
pursuant to the exercise of this Option have not been registered under the
Securities Act of 1933, as amended (the "Securities Act"), at the time this
                                         --------------
Option is exercised, Optionee shall, if required by the Company, concurrently
with the exercise of all or any portion of this Option, deliver to the Company
Optionee's Investment Representation Statement in the form attached hereto as
Exhibit B, and shall read the applicable rules of the Commissioner of
- ---------
Corporations attached to such Investment Representation Statement.

     4.   Method of Payment.  Payment of the Exercise Price shall be by any of
          -----------------
the following, or a combination thereof, at the election of Optionee:

          (a)  cash;

          (b)  check;

          (c) surrender of other shares of Common Stock of the Company which (i)
in the case of Shares acquired pursuant to the exercise of a Company option,
have been owned by Optionee for more than six (6) months on the date of
surrender, and (ii) have a fair market value on the date of surrender equal to
the Exercise Price of the Shares as to which the Option is being exercised;

          (d) if there is a public market for the Shares and they are registered
under the  Securities Act, delivery of a properly executed exercise notice
together with irrevocable instructions to a broker to deliver promptly to the
Company the amount of sale or loan proceeds required to pay the exercise price;
or

          (e) such other consideration, including promissory notes, as may be
determined by the Board in its absolute discretion to the extent permitted under
Sections 408 and 409 of the California General Corporation Law.

     5.   Restrictions on Exercise.  This Option may not be exercised until such
          ------------------------
time as the Plan has been approved by the shareholders of the Company, or if the
issuance of such Shares upon such exercise or the method of payment of
consideration for such shares would constitute a violation of any applicable
federal or state securities or other law or regulation, including any rule under
Part 207 of Title 12 of the Code of Federal Regulations as promulgated by the
Federal Reserve Board.  As a condition to the exercise of this Option, the
Company may require Optionee to make any representation and warranty to the
Company as may be required by any applicable law or regulation.

     6.   Termination of Relationship.  In the event of termination of
          ---------------------------
Optionee's Continuous Status as an Employee or Consultant, Optionee may, to the
extent otherwise so entitled at the date of such termination (the "Termination
                                                                   -----------
Date"), exercise this Option during the period ending on the Expiration Date set
- ----
out in the Notice of Option Grant.  To the extent that Optionee was not entitled
to exercise this Option at such Termination Date, or if

                                      -2-
<PAGE>

Optionee does not exercise this Option within the time specified herein, the
Option shall terminate.

     7.   Disability of Optionee.
          ----------------------

          (a) Notwithstanding the provisions of Section 6 above, in the event of
termination of Continuous Status as an Employee or Consultant as a result of
Optionee's total and permanent disability (as defined in Section 22(e)(3) of the
Code), Optionee may, but only within twelve (12) months from the Termination
Date (but in no event later than the date of expiration of the Term of this
Option as set forth in the Notice of Stock Option Grant and in Section 10
below), exercise this Option to the extent Optionee was entitled to exercise it
as of such Termination Date.  To the extent that Optionee was not entitled to
exercise the Option as of the Termination Date, or if Optionee does not exercise
such Option (which he was entitled to exercise) within the time specified
herein, the Option shall terminate.

          (b) Notwithstanding the provisions of Section 6 above, in the event of
termination of Optionee's consulting relationship or Continuous Status as an
Employee as a result of any disability not constituting a total and permanent
disability (as defined in Section 22(e)(3) of the Code), Optionee may, but only
within six (6) months from the Termination Date (but in no event later than the
date of expiration of the Term of this Option as set forth in the Notice of
Stock Option Grant and in Section 10 below), exercise this Option to the extent
Optionee was entitled to exercise it as of such Termination Date; provided,
however, that if this is an Incentive Stock Option and Optionee fails to
exercise this Incentive Stock Opinion within three (3) months from the
Termination Date, this Option will cease to qualify as an Incentive Stock Option
(as defined in Section 422 of the Code) and Optionee will be treated for federal
income tax purposes as having received ordinary income at the time of such
exercise in an amount generally measured by the difference between the exercise
price for the Shares and the fair market value of the Shares on the date of
exercise.  To the extent that Optionee was not entitled to exercise the Option
at the Termination Date, or if Optionee does not exercise such Option to the
extent so entitled within the time specified herein, the Option shall terminate.

     8.   Death of Optionee.   In the event of the death of Optionee (a) during
          -----------------
the Term of this Option and while an Employee or Consultant of the Company and
having been in Continuous Status as an Employee or Consultant since the date of
grant of the Option, or (b) within thirty (30) days after Optionee's Termination
Date, the Option may be exercised at any time within six (6) months following
the date of death (but in no event later than the date of expiration of the Term
of this Option as set forth in the Notice of  Stock Option Grant and in Section
10 below), by Optionee's estate or by a person who acquired the right to
exercise the Option by bequest or inheritance, but only to the extent of the
right to exercise that had accrued at the Termination Date.

     9.   Non-Transferability of Option.  This Option may not be transferred in
          -----------------------------
any manner otherwise than by will or by the laws of descent or distribution and
may be exercised during the lifetime of Optionee only by him or her.  The terms
of this Option shall be binding upon the executors, administrators, heirs,
successors and assigns of Optionee.

                                      -3-



<PAGE>

     10.  Term of Option.  This Option may be exercised only within the Term set
          --------------
out in the Notice of Stock Option Grant, and may be exercised during such Term
only in accordance with the Plan and the terms of this Option.  The limitations
set out in Section 7 of the Plan regarding Options designated as Incentive Stock
Options and Options granted to more than ten percent (10%) shareholders shall
apply to this Option.

     11.  Tax Consequences.  Set forth below is a brief summary as of the date
          ----------------
of this Option of certain of the federal and California tax consequences of
exercise of this Option and disposition of the Shares under the laws in effect
as of the Date of Grant.  THIS SUMMARY IS NECESSARILY INCOMPLETE, AND THE TAX
LAWS AND REGULATIONS ARE SUBJECT TO CHANGE.  OPTIONEE SHOULD CONSULT A TAX
ADVISER BEFORE EXERCISING THIS OPTION OR DISPOSING OF THE SHARES.

          (a) Exercise of Incentive Stock Option.  If this Option qualifies as
              ----------------------------------
an Incentive Stock Option, there will be no regular federal or California income
tax liability upon the exercise of the Option, although the excess, if any, of
the fair market value of the Shares on the date of exercise over the Exercise
Price will be treated as an adjustment to the alternative minimum tax for
federal tax purposes and may subject Optionee to the alternative minimum tax in
the year of exercise.

          (b) Exercise of Nonstatutory Stock Option.  If this Option does not
              -------------------------------------
qualify as an Incentive Stock Option, there may be a regular federal income tax
liability and a California income tax liability upon the exercise of the Option.
The Optionee will be treated as having received compensation income (taxable at
ordinary income tax rates) equal to the excess, if any, of the fair market value
of the Shares on the date of exercise over the Exercise Price.  If Optionee is
an employee, the Company will be required to withhold from Optionee's
compensation or collect from Optionee and pay to the applicable taxing
authorities an amount equal to a percentage of this compensation income at the
time of exercise.

          (c) Disposition of Shares.  In the case of a Nonstatutory Stock
              ---------------------
Option, if the Shares are held for at least one year, any gain realized on
disposition of the Shares will be treated as long-term capital gain for federal
and California income tax purposes.  In the case of an Incentive Stock Option,
if the Shares transferred pursuant to the Option are held for at least one year
after exercise and are disposed of at least two years after the Date of Grant,
any gain realized on disposition of the Shares will also be treated as long-term
capital gain for federal and California income tax purposes.  If the Shares
purchased under an Incentive Stock Option are disposed of within such one-year
period or within two years after the Date of Grant, any gain realized on such
disposition will be treated as compensation income (taxable at ordinary income
rates) to the extent of the difference between the Exercise Price and the lesser
of (i) the fair market value of the Shares on the date of exercise, or (ii) the
sale price of the Shares.

          (d) Notice of Disqualifying Disposition of Incentive Stock Option
              -------------------------------------------------------------
Shares.  If the Option granted to Optionee herein is an Incentive Stock Option,
- ------
and if

                                      -4-
<PAGE>

Optionee sells or otherwise disposes of any of the Shares acquired pursuant to
such Incentive Stock Option on or before the later of (i) the date two years
after the Date of Grant, or (ii) the date one year after the date of exercise,
Optionee shall immediately notify the Company in writing of such disposition.
Optionee acknowledges and agrees that he or she may be subject to income tax
withholding by the Company on the compensation income recognized by Optionee
from the early disposition by payment in cash or out of the current earnings
paid to Optionee.

     12.  Withholding Tax Obligations.  Optionee understands that, upon
          ---------------------------
exercising a Nonstatutory Stock Option, he or she will recognize income for tax
purposes in an amount equal to the excess of the then fair market value of the
Shares over the Exercise Price.  However, the timing of this income recognition
may be deferred for up to six months if Optionee is subject to Section 16 of the
Securities Exchange Act of 1934, as amended (the "Exchange Act").  If Optionee
                                                  ------------
is an employee, the Company will be required to withhold from Optionee's
compensation, or collect from Optionee and pay to the applicable taxing
authorities an amount equal to a percentage of this compensation income.
Additionally, Optionee may at some point be required to satisfy tax withholding
obligations with respect to the disqualifying disposition of an Incentive Stock
Option.  The Optionee shall satisfy his or her tax withholding obligation
arising upon the exercise of this Option by one or some combination of the
following methods:  (a) by cash payment, (b) out of Optionee's current
compensation, (c) if permitted by the Administrator, in its discretion, by
surrendering to the Company Shares which (i) in the case of Shares previously
acquired from the Company, have been owned by Optionee for more than six months
on the date of surrender, and (ii) have a fair market value on the date of
surrender equal to or greater than Optionee's marginal tax rate times the
ordinary income recognized, or (d) by electing to have the Company withhold from
the Shares to be issued upon exercise of the Option that number of Shares having
a fair market value equal to the amount required to be withheld.  For this
purpose, the fair market value of the Shares to be withheld shall be determined
on the date that the amount of tax to be withheld is to be determined (the "Tax
                                                                            ---
Date").
- ----

     If Optionee is subject to Section 16 of the Exchange Act (an "Insider"),
                                                                   -------
any surrender of previously owned Shares to satisfy tax withholding obligations
arising upon exercise of this Option must comply with the applicable provisions
of Rule 16b-3 promulgated under the Exchange Act ("Rule 16b-3") and shall be
                                                   ----------
subject to such additional conditions or restrictions as may be required
thereunder to qualify for the maximum exemption from Section 16 of the Exchange
Act with respect to Plan transactions.

     All elections by an Optionee to have Shares withheld to satisfy tax
withholding obligations shall be made in writing in a form acceptable to the
Administrator and shall be subject to the following restrictions:

          (a) the election must be made on or prior to the applicable Tax Date;

          (b) once made, the election shall be irrevocable as to the particular
Shares of the Option as to which the election is made; and

                                      -5-
<PAGE>

          (c) all elections shall be subject to the consent or disapproval of
the Administrator.

     13.  Market Standoff Agreement.  In connection with the initial public
          -------------------------
offering of the Company's securities and upon request of the Company or the
underwriters managing any underwritten offering of the Company's securities,
Optionee hereby agrees not to sell, make any short sale of, loan, grant any
option for the purchase of, or otherwise dispose of any Shares (other than those
included in the registration) without the prior written consent of the Company
or such underwriters, as the case may be, for such period of time (not to exceed
180 days) from the effective date of such registration as may be requested by
the Company or such managing underwriters and to execute an agreement reflecting
the foregoing as may be requested by the underwriters at the time of the public
offering.



                  [Remainder of Page Left Intentionally Blank]

                                      -6-
<PAGE>

     This Agreement may be executed in two or more counterparts, each of which
shall be deemed an original and all of which together shall constitute one
document.


                              XAQTI CORPORATION


                              By:______________________________

                              Title:___________________________


     OPTIONEE ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT TO THE
OPTION HEREOF IS EARNED ONLY BY CONTINUING EMPLOYMENT OR CONSULTANCY AT THE WILL
OF THE COMPANY (NOT THROUGH THE ACT OF BEING HIRED, BEING GRANTED THIS OPTION OR
ACQUIRING SHARES HEREUNDER).  OPTIONEE FURTHER ACKNOWLEDGES AND AGREES THAT
NOTHING IN THIS AGREEMENT, NOR IN THE COMPANY'S STOCK PLAN WHICH IS INCORPORATED
HEREIN BY REFERENCE, SHALL CONFER UPON OPTIONEE ANY RIGHT WITH RESPECT TO
CONTINUATION OF EMPLOYMENT OR CONSULTANCY BY THE COMPANY, NOR SHALL IT INTERFERE
IN ANY WAY WITH OPTIONEE'S RIGHT OR THE COMPANY'S RIGHT TO TERMINATE OPTIONEE'S
EMPLOYMENT OR CONSULTANCY AT ANY TIME, WITH OR WITHOUT CAUSE.

     Optionee acknowledges receipt of a copy of the Plan and represents that he
or she is familiar with the terms and provisions thereof, and hereby accepts
this Option subject to all of the terms and provisions thereof.  Optionee has
reviewed the Plan and this Option in their entirety, has had an opportunity to
obtain the advice of counsel prior to executing this Option and fully
understands all provisions of the Option.  Optionee hereby agrees to accept as
binding, conclusive and final all decisions or interpretations of the
Administrator upon any questions arising under the Plan or this Option.


Dated: ________________________          ______________________________
                                         ((Optionee))

                                      -7-
<PAGE>

                                   EXHIBIT A
                                   ---------

                               XAQTI CORPORATION

                                1996 STOCK PLAN

                                EXERCISE NOTICE
                                ---------------


XaQti Corporation
1630 Oakland Road
Bldg. A-214
San Jose, CA  95131
Attention:  Chief Financial Officer

     1.   Exercise of Option.  Effective as of today, _______________, 199__,
          ------------------
the undersigned ("Optionee") hereby elects to exercise Optionee's option to
                  --------
purchase _____________ shares of the Common Stock (the "Shares") of XaQti
                                                        ------
Corporation (the "Company") under and pursuant to the Company's 1996 Stock Plan,
                  -------
(the "Plan") and the Stock Option Agreement dated  ________  (the "Option
      ----                                                         ------
Agreement").
- ---------

     2.   Representations of Optionee.  Optionee acknowledges that Optionee has
          ---------------------------
received, read and understood the Plan, the Option Agreement and the Investment
Representation Statement attached as Exhibit B to the Option Agreement, and
                                     ---------
agrees to abide by and be bound by their terms and conditions.  If applicable,
Optionee has executed and delivered the Investment Representation Statement to
the Company.  Optionee further represents that Optionee is purchasing the Shares
for Optionee's own account for investment and not with a view to, or for sale in
connection with, a "distribution" of any of such Shares for purposes of the
Securities Act of 1933, as amended (the "Securities Act").
                                         --------------

     3.   Compliance with Securities Laws.  Optionee understands and
          -------------------------------
acknowledges that the Shares have not been registered under the Securities Act
and, notwithstanding any other provision of the Option Agreement to the
contrary, the  exercise of any rights to purchase any Shares is expressly
conditioned upon compliance with the Securities Act, all applicable state
securities laws and all applicable requirements of any stock exchange or over
the counter market on which the Company's Common Stock may be listed or traded
at the time of exercise and transfer.  Optionee agrees to cooperate with the
Company to ensure compliance with such laws.

     4.   Federal Restrictions on Transfer.  Optionee understands that the
          --------------------------------
Shares have not been registered under the Securities Act and therefore cannot be
resold and must be held indefinitely unless they are registered under the
Securities Act or unless an exemption from such registration is available and
that the certificate(s) representing the Shares may bear a legend to that
effect.  Optionee understands that the Company is under no obligation to
register the Shares and that an exemption may not be available or may not permit
Optionee to
<PAGE>

transfer Shares in the amounts or at the times proposed by Optionee.
Specifically, Optionee has been advised that Rule 144 promulgated under the
Securities Act, which permits certain resales of unregistered securities, is not
presently available with respect to the Shares and, in any event requires that
the Shares be fully paid for by means other than a promissory note secured by
the Shares themselves and then be held for at least two years (and in some cases
three years) before they may be resold under Rule 144.

     5.   Rights as Shareholder.  Until the stock certificate evidencing such
          ---------------------
Shares is issued (as evidenced by the appropriate entry on the books of the
Company or of a duly authorized transfer agent of the Company), no right to vote
or receive dividends or any other rights as a shareholder shall exist with
respect to the optioned Shares, notwithstanding the exercise of the Option.  The
Company shall issue (or cause to be issued) such stock certificate promptly
after the Option is exercised.  No adjustment will be made for a dividend or
other right for which the record date is prior to the date the stock certificate
is issued, except as provided in Section 12 of the Plan.

          Optionee shall enjoy rights as a shareholder until such time as
Optionee disposes of the Shares or the Company and/or its assignee(s) exercises
the Right of First Refusal pursuant to Section 6 below.  Upon such exercise,
Optionee shall have no further rights as a holder of the Shares so purchased
except the right to receive payment for the Shares so purchased in accordance
with the provisions of this Agreement, and Optionee shall forthwith cause the
certificate(s) evidencing the Shares so purchased to be surrendered to the
Company for transfer or cancellation.

     6.   Company's Right of First Refusal.  Before any Shares held by Optionee
          --------------------------------
or any transferee (either being sometimes referred to herein as the "Holder")
                                                                     ------
may be sold or otherwise transferred (including transfer by gift or operation of
law), the Company or its assignee(s) shall have a right of first refusal to
purchase the Shares on the terms and conditions set forth in this Section (the
"Right of First Refusal").
- -----------------------

          (a)  Notice of Proposed Transfer.  The Holder of the Shares shall
               ---------------------------
deliver to the Company a written notice (the "Notice") stating:  (i) the
                                              ------
Holder's bona fide intention to sell or otherwise transfer such Shares; (ii) the
name of each proposed purchaser or other transferee ("Proposed Transferee");
                                                      -------------------
(iii) the number of Shares to be transferred to each Proposed Transferee; and
(iv) the terms and conditions of each proposed sale or transfer.  The Holder
shall offer the Shares at the same price (the "Offered Price") and upon the same
                                               -------------
terms (or terms as similar as reasonably possible) to the Company or its
assignee(s).

          (b) Exercise of Right of First Refusal.  At any time within thirty
              ----------------------------------
(30) days after receipt of the Notice, the Company and/or its assignee(s) may,
by giving written notice to the Holder, elect to purchase all, but not less than
all, of the Shares proposed to be transferred to any one or more of the Proposed
Transferees, at the purchase price determined in accordance with subsection (c)
below.


                                      -2-
<PAGE>

          (c) Purchase Price.  The purchase price ("Purchase Price") for the
              --------------                        --------------
Shares purchased by the Company or its assignee(s) under this Section shall be
the Offered Price.  If the Offered Price includes consideration other than cash,
the cash equivalent value of the non-cash consideration shall be determined by
the Board of Directors of the Company in good faith.

          (d) Payment.  Payment of the Purchase Price shall be made, at the
              -------
option of the Company or its assignee(s), in cash (by check), by cancellation of
all or a portion of any outstanding indebtedness of the Holder to the Company
(or, in the case of repurchase by an assignee, to the assignee), or by any
combination thereof within 30 days after receipt of the Notice or in the manner
and at the times set forth in the Notice.

          (e) Holder's Right to Transfer.  If all of the Shares proposed in the
              --------------------------
Notice to be transferred to a given Proposed Transferee are not purchased by the
Company and/or its assignee(s) as provided in this Section, then the Holder may
sell or otherwise transfer such Shares to that Proposed Transferee at the
Offered Price or at a higher price, provided that such sale or other transfer is
consummated within 60 days after the date of the Notice and provided further
that any such sale or other transfer is effected in accordance with any
applicable securities laws and the Proposed Transferee agrees in writing that
the provisions of this Section shall continue to apply to the Shares in the
hands of such Proposed Transferee.  If the Shares described in the Notice are
not transferred to the Proposed Transferee within such period, or if the Holder
proposes to change the price or other terms to make them more favorable to the
Proposed Transferee, a new Notice shall be given to the Company, and the Company
and/or its assignees shall again be offered the Right of First Refusal before
any Shares held by the Holder may be sold or otherwise transferred.

          (f) Exception for Certain Family Transfers.  Anything to the contrary
              --------------------------------------
contained in this Section notwithstanding, the transfer of any or all of the
Shares during Optionee's lifetime or on Optionee's death by will or intestacy to
Optionee's immediate family or a trust for the benefit of Optionee's immediate
family shall be exempt from the provisions of this Section.  "Immediate Family"
                                                              ----------------
as used herein shall mean spouse, lineal descendant or antecedent, father,
mother, brother or sister.  In such case, the transferee or other recipient
shall receive and hold the Shares so transferred subject to the provisions of
this Section, and there shall be no further transfer of such Shares except in
accordance with the terms of this Section.

          (g) Termination of Rights.  The Right of First Refusal shall terminate
              ---------------------
upon the first sale of Common Stock of the Company to the general public
pursuant to a registration statement filed with and declared effective by the
Securities and Exchange Commission under the Securities Act.

     7.   Tax Consultation.  Optionee understands that Optionee may suffer
          ----------------
adverse tax consequences as a result of Optionee's purchase or disposition of
the Shares.  Optionee represents that Optionee has consulted with any tax
consultants Optionee deems advisable in


                                      -3-
<PAGE>

connection with the purchase or disposition of the Shares and that Optionee is
not relying on the Company for any tax advice.

     8.   Restrictive Legends and Stop-Transfer Orders.
          --------------------------------------------

          (a) Legends.  Optionee understands and agrees that the Company shall
              -------
cause the legends set forth below or legends substantially equivalent thereto,
to be placed upon any certificate(s) evidencing ownership of the Shares together
with any other legends that may be required by state or federal securities laws:

              (i)   THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED
                    UNDER THE SECURITIES ACT OF 1933 (THE "ACT") AND MAY NOT BE
                    OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR
                    HYPOTHECATED UNLESS AND UNTIL REGISTERED UNDER THE ACT OR,
                    IN THE OPINION OF COUNSEL IN FORM AND SUBSTANCE SATISFACTORY
                    TO THE ISSUER OF THESE SECURITIES, SUCH OFFER, SALE OR
                    TRANSFER, PLEDGE OR HYPOTHECATION IS IN COMPLIANCE
                    THEREWITH.

              (ii)  THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO
                    CERTAIN RESTRICTIONS ON TRANSFER AND RIGHT OF FIRST REFUSAL
                    OPTIONS HELD BY THE ISSUER OR ITS ASSIGNEE(S) AS SET FORTH
                    IN THE EXERCISE NOTICE BETWEEN THE ISSUER AND THE ORIGINAL
                    HOLDER OF THESE SHARES, A COPY OF WHICH MAY BE OBTAINED AT
                    THE PRINCIPAL OFFICE OF THE ISSUER. SUCH TRANSFER
                    RESTRICTIONS AND RIGHT OF FIRST REFUSAL ARE BINDING ON
                    TRANSFEREES OF THESE SHARES.

              (iii) IT IS UNLAWFUL TO CONSUMMATE A SALE OR TRANSFER OF THIS
                    SECURITY, OR ANY INTEREST THEREIN, OR TO RECEIVE ANY
                    CONSIDERATION THEREFOR WITHOUT THE PRIOR WRITTEN CONSENT OF
                    THE COMMISSIONER OF CORPORATIONS OF THE STATE OF
                    CALIFORNIA, EXCEPT AS PERMITTED IN THE COMMISSIONER'S
                    RULES.

                                      -4-
<PAGE>

          Optionee understands that transfer of the Shares may be restricted by
Section 260.141.11 of the Rules of the California Corporations Commissioner, a
copy of which is attached to this Agreement.

          (b) Stop-Transfer Notices.  Optionee agrees that, in order to ensure
              ---------------------
compliance with the restrictions referred to herein, the Company may issue
appropriate "stop transfer" instructions to its transfer agent, if any, and
that, if the Company transfers its own securities, it may make appropriate
notations to the same effect in its own records.

          (c) Refusal to Transfer.  The Company shall not be required (i) to
              -------------------
transfer on its books any Shares that have been sold or otherwise transferred in
violation of any of the provisions of this Agreement or (ii) to treat as owner
of such Shares or to accord the right to vote or pay dividends to any purchaser
or other transferee to whom such Shares shall have been so transferred.

     9.   Market Standoff Agreement.  In connection with the initial public
          -------------------------
offering of the Company's securities and upon request of the Company or the
underwriters managing any underwritten offering of the Company's securities,
Optionee hereby agrees not to sell, make any short sale of, loan, grant any
option for the purchase of, or otherwise dispose of any Shares (other than those
included in the registration) without the prior written consent of the Company
or such underwriters, as the case may be, for such period of time (not to exceed
180 days) from the effective date of such registration as may be requested by
the Company or such managing underwriters and to execute an agreement reflecting
the foregoing as may be requested by the underwriters at the time of the public
offering.

     10.  Successors and Assigns.  The Company may assign any of its rights
          ----------------------
under this Agreement to single or multiple assignees, and this Agreement shall
inure to the benefit of the successors and assigns of the Company.  Subject to
the restrictions on transfer herein set forth, this Agreement shall be binding
upon Optionee and his or her heirs, executors, administrators, successors and
assigns.

     11.  Interpretation.  Any dispute regarding the interpretation of this
          --------------
Agreement shall be submitted by Optionee or by the Company forthwith to the
Company's Board of Directors or the committee thereof that administers the Plan,
which shall review such dispute at its next regular meeting.  The resolution of
such a dispute by the Board or committee shall be final and binding on the
Company and on Optionee.

     12.  Governing Law; Severability.  This Agreement shall be governed by and
          ---------------------------
construed in accordance with the laws of the State of California excluding that
body of law pertaining to conflicts of law.  Should any provision of this
Agreement be determined by a court of law to be illegal or unenforceable, the
other provisions shall nevertheless remain effective and shall remain
enforceable.

     13.  Notices.  Any notice required or permitted hereunder shall be given in
          -------
writing and shall be deemed effectively given upon personal delivery or upon
deposit in the United


                                      -5-
<PAGE>

States mail by certified mail, with postage and fees prepaid, addressed to the
other party at its address as shown below beneath its signature, or to such
other address as such party may designate in writing from time to time to the
other party.

     14.  Further Instruments.  The parties agree to execute such further
          -------------------
instruments and to take such further action as may be reasonably necessary to
carry out the purposes and intent of this Agreement.

     15.  Delivery of Payment.  Optionee herewith delivers to the Company the
          -------------------
full Exercise Price for the Shares.

     16.  Entire Agreement.  The Plan and Notice of Stock Option Grant/Option
          ----------------
Agreement are incorporated herein by reference.  This Agreement, the Plan and
the Notice of Stock Option Grant/Option Agreement constitute the entire
agreement of the parties and supersede in their entirety all prior undertakings
and agreements of the Company and Optionee with respect to the subject matter
hereof, and is governed by California law except for that body of law pertaining
to conflict of laws.

Submitted by:                       Accepted by:

Optionee:                           XAQTI CORPORATION


______________________________      By:_____________________________
((Optionee))
                                    Title:__________________________

Address:  ((OptioneeAddress1))      Address:  1630 Oakland Road, Bldg. A-214
          ((OptioneeAddress2))                San Jose, CA 95131

                                      -6-


<PAGE>

                                   EXHIBIT B
                                   ---------

                      INVESTMENT REPRESENTATION STATEMENT
                      -----------------------------------

OPTIONEE :     ((Optionee))

COMPANY  :     XAQTI CORPORATION

SECURITY :     Common Stock

AMOUNT   :     ___________________ Shares

DATE     :     ___________________, 199__

In connection with the purchase of the above-listed Securities, I, Optionee,
represent to the Company the following:

          (a) I am aware of the Company's business affairs and financial
condition, and have acquired sufficient information about the Company to reach
an informed and knowledgeable decision to acquire the Securities.  I am
purchasing these Securities for my own account for investment purposes only and
not with a view to, or for the resale in connection with, any "distribution"
                                                               ------------
thereof for purposes of the Securities Act of 1933, as amended (the "Securities
                                                                     ----------
Act").
- ---

          (b) I understand that the Securities have not been registered under
the Securities Act in reliance upon a specific exemption therefrom, which
exemption depends upon, among other things, the bona fide nature of my
investment intent as expressed herein.

          (c) I further understand that the Securities must be held indefinitely
unless subsequently registered under the Securities Act or unless an exemption
from registration is otherwise available.  Moreover, I understand that the
Company is under no obligation to register the Securities.  In addition, I
understand that the certificate evidencing the Securities will be imprinted with
a legend which prohibits the transfer of the Securities unless they are
registered or such registration is not required in the opinion of counsel for
the Company.

          (d) I am familiar with the provisions of Rule 701 and Rule 144, each
promulgated under the Securities Act, which, in substance, permit limited public
resale of "restricted securities" acquired, directly or indirectly, from the
issuer thereof, in a non-public offering subject to the satisfaction of certain
conditions.  Rule 701 provides that if the issuer qualifies under Rule 701 at
the time of issuance of the Securities, such issuance will be exempt from
registration under the Securities Act.  In the event the Company later becomes
subject to the reporting requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, ninety (90) days thereafter the securities exempt under
Rule 701 may be resold, subject to the satisfaction of certain of the conditions
specified by Rule 144, including among other things:  (1) the sale being made
through a broker in an unsolicited "broker's transaction" or in transactions
directly with a market maker (as said term is defined under the Securities
Exchange Act of 1934); and, in the case of an affiliate, (2) the availability of
certain public information about the Company, and the amount of securities being
sold during any three month period not exceeding the limitations specified in
Rule 144(e), if applicable.

<PAGE>

Notwithstanding this paragraph (d), I acknowledge and agree to the restrictions
set forth in paragraph (f) below.

          In the event that the Company does not qualify under Rule 701 at the
time of issuance of the Securities, then the Securities may be resold in certain
limited circumstances subject to the provisions of Rule 144, which requires
among other things:  (1) the availability of certain public information about
the Company; (2) the resale occurring not less than two years after the party
has purchased, and made full payment for, within the meaning of Rule 144, the
securities to be sold; and, in the case of an affiliate, or of a non-affiliate
who has held the securities less than three years, (3) the sale being made
through a broker in an unsolicited "broker's transaction" or in transactions
directly with a market maker (as said term is defined under the Securities
Exchange Act of 1934), and (4) the amount of securities being sold during any
three month period not exceeding the specified limitations stated therein, if
applicable.  I UNDERSTAND THAT PAYMENT FOR THE SHARES WITH A PROMISSORY NOTE IS
NOT DEEMED TO BE FULL PAYMENT UNDER RULE 144 UNLESS THE NOTE IS SECURED BY
ASSETS OTHER THAN THE SHARES.

          (e) I understand that at such time in the future that I might wish to
sell the Securities, there may be no public market upon which to make such a
sale, and that, even if such a public market then exists, the Company may not be
satisfying the current public information requirements of Rule 144, and that, in
such event, I will be precluded from selling the Securities under Rule 144 even
I have satisfied the two-year minimum holding period.

          (f) I further understand that in the event all of the applicable
requirements of Rule 144 or Rule 701 are not satisfied, registration under the
Securities Act, compliance with Regulation A, or some other registration
exemption will be required; and that, notwithstanding the fact that Rule 144 and
Rule 701 are not exclusive, the Staff of the Securities and Exchange Commission
has expressed its opinion that persons proposing to sell private placement
securities other than in a registered offering and otherwise than pursuant to
Rule 144 or Rule 701 will have a substantial burden of proof in establishing
that an exemption from registration is available for such offers or sales, and
that such persons and their respective brokers who participate in such
transactions do so at their own risk.

          (g) I understand that the certificate evidencing the Securities may be
imprinted with a legend which prohibits the transfer of the Securities without
the consent of the applicable Commissioner of Corporations of California.  I
have read the applicable Commissioner's Rules with respect to such restriction,
a copy of which is attached.

                                    Optionee:

                                    ________________________________________
                                    ((Optionee))

Date:  ________________, 199__


                                      -2-
<PAGE>

             STATE OF CALIFORNIA - CALIFORNIA ADMINISTRATIVE CODE
             ----------------------------------------------------
       Title 10.  Investment - Chapter 3.  Commissioner of Corporations

   260.141.11:  Restriction on Transfer.
   ----------   -----------------------

   (a)   The issuer of any security upon which a restriction on transfer has
been imposed pursuant to Sections 260.102.6, 260.141.10 or 260.534 shall cause a
copy of this section to be delivered to each issuee or transferee of such
security at the time the certificate evidencing the security is delivered to the
issuee or transferee.

   (b)   It is unlawful for the holder of any such security to consummate a sale
or transfer of such security, or any interest therein, without the prior written
consent of the Commissioner (until this condition is removed pursuant to Section
260.141.12 of these rules), except:

         (1)  to the issuer;
         (2)  pursuant to the order or process of any court;
         (3)  to any person described in Subdivision (i) of Section 25102 of the
Code or Section 260.105.14 of these rules;
         (4)  to the transferor's ancestors, descendants or spouse, or any
custodian or trustee for the account of the transferor or the transferor's
ancestors, descendants, or spouse; or to a transferee by a trustee or custodian
for the account of the transferee or the transferee's ancestors, descendants or
spouse;
         (5)  to holders of securities of the same class of the same issuer;
         (6)  by way of gift or donation inter vivos or on death;
         (7)  by or through a broker-dealer licensed under the Code (either
acting as such or as a finder) to a resident of a foreign state, territory or
country who is neither domiciled in this state to the knowledge of the broker-
dealer, nor actually present in this state if the sale of such securities is not
in violation of any securities law of the foreign state, territory or country
concerned;
         (8)  to a broker-dealer licensed under the Code in a principal
transaction, or as an underwriter or member of an underwriting syndicate or
selling group;
         (9)  if the interest sold or transferred is a pledge or other lien
given by the purchaser to the seller upon a sale of the security for which the
Commissioner's written consent is obtained or under this rule not required;
         (10) by way of a sale qualified under Sections 25111, 25112, 25113 or
25121 of the Code, of the securities to be transferred, provided that no order
under Section 25140 or Subdivision (a) of Section 25143 is in effect with
respect to such qualification;
         (11) by a corporation to a wholly owned subsidiary of such corporation,
or by a wholly owned subsidiary of a corporation to such corporation;
         (12) by way of an exchange qualified under Section 25111, 25112 or
25113 of the Code, provided that no order under Section 25140 or Subdivision (a)
of Section 25143 is in effect with respect to such qualification;
         (13) between residents of foreign states, territories or countries who
are neither domiciled nor actually present in this state;
         (14) to the State Controller pursuant to the Unclaimed Property Law or
to the administrator of the unclaimed property law of another state;
         (15) by the State Controller pursuant to the Unclaimed Property Law or
by the administrator of the unclaimed property law of another state if, in
either such case, such person (i) discloses to potential purchasers at the sale
that transfer of the securities is restricted under this rule, (ii) delivers to
each purchaser a copy of this rule, and (iii) advises the Commissioner of the
name of each purchaser;
         (16) by a trustee to a successor trustee when such transfer does not
involve a change in the beneficial ownership of the securities; or
         (17) by way of an offer and sale of outstanding securities in an issuer
transaction that is subject to the qualification requirement of Section 25110 of
the Code but exempt from that qualification requirement by subdivision (f) of
Section 25102;

provided that any such transfer is on the condition that any certificate
evidencing the security issued to such transferee shall contain the legend
required by this section.

   (c)   The certificates representing all such securities subject to such a
restriction on transfer, whether upon initial issuance or upon any transfer
thereof, shall bear on their face a legend, prominently stamped or printed
thereon in capital letters of not less than 10-point size, reading as follows:

         "IT IS UNLAWFUL TO CONSUMMATE A SALE OR TRANSFER OF THIS SECURITY, OR
         ANY INTEREST THEREIN, OR TO RECEIVE ANY CONSIDERATION THEREFOR, WITHOUT
         THE PRIOR WRITTEN CONSENT OF THE COMMISSIONER OF CORPORATIONS OF THE
         STATE OF CALIFORNIA, EXCEPT AS PERMITTED IN THE COMMISSIONER'S RULES."

<PAGE>

                                  EXHIBIT 5.1



                               September 2, 1999

Vitesse Semiconductor Corporation
741 Calle Plano
Camarillo, California 93012

     Re:  Registration Statement on Form S-8
          ----------------------------------

Ladies and Gentlemen:

     We have examined the Registration Statement on Form S-8 to be filed by you
with the Securities and Exchange Commission on or about the date hereof (the
"Registration Statement"), in connection with the registration under the
Securities Act of 1933, as amended, of an aggregate of 134,029 shares of your
Common Stock (the "Option Shares") under the XaQti Corporation 1996 Stock Plan
(the "XaQti Plan").  As  legal counsel to Vitesse Semiconductor Corporation (the
"Company"), we have examined the proceedings taken and proposed to be taken in
connection with the issuance, sale and payment of consideration for the Option
Shares under the Plans.  In addition, for the purposes of this opinion, we have
assumed that the consideration received by the Company in connection with each
issuance of the Option Shares will include an amount in the form of cash,
services rendered or property that exceeds the greater of (i) the aggregate par
value of such shares or (ii) the portion of such consideration determined by the
Company's Board of Directors to be "capital" for purposes of the Delaware
General Corporation Law.

     It is our opinion that the Option Shares, when issued and sold in the
manner described in the XaQti Plan and pursuant to the agreement that
accompanies each grant under the XaQti Plan will be legally and validly issued,
fully paid and non-assessable.

     We consent to the use of this opinion as an exhibit to the Registration
Statement and further consent to the use of our name wherever appearing in the
Registration Statement, including any prospectus constituting a part thereof,
and any amendments thereto.  This opinion may be incorporated by reference in
any abbreviated registration statement filed pursuant to General Instruction E
of Form S-8 under the Securities Act with respect to the Registration Statement.


                                          Sincerely,

                                          WILSON SONSINI GOODRICH & ROSATI
                                          Professional Corporation


                                          /s/ Wilson Sonsini Goodrich & Rosati

<PAGE>

                                  EXHIBIT 23.1
                                  ------------


                      CONSENT OF INDEPENDENT ACCOUNTANTS


To the Board of Directors
Vitesse Semiconductor Corporation

     We consent to the use of our report incorporated herein by reference.


/s/ KMPG LLP
Los Angeles, California
August 27, 1999


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