VIRATA CORP
S-1/A, EX-1.1, 2000-07-13
SEMICONDUCTORS & RELATED DEVICES
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                                                                   EXHIBIT 1.1
                               6,500,000 shares

                              VIRATA CORPORATION

                                 COMMON STOCK

                            UNDERWRITING AGREEMENT
                            ----------------------


                                                                   July 12, 2000


CREDIT SUISSE FIRST BOSTON CORPORATION
UBS WARBURG LLC
FLEETBOSTON ROBERTSON STEPHENS INC.
THOMAS WEISEL PARTNERS LLC,
As Representatives of the Several Underwriters,
 c/o   Credit Suisse First Boston Corporation,
       Eleven Madison Avenue,
       New York, N.Y. 10010-3629

Dear Sirs:

       1.  Introductory.  Virata Corporation, a Delaware corporation
("Company"), proposes to issue and sell to the Underwriters 5,880,000 shares of
its Common Stock ("Securities") and the stockholders listed in Schedule A hereto
("Selling Stockholders") propose severally to sell an aggregate of 620,000
outstanding shares of the Securities (such 6,500,000 shares of Securities being
hereinafter referred to as the "Firm Securities"). The Company also proposes to
issue and sell to the Underwriters, at the option of the Underwriters, an
aggregate of not more than 975,000 additional shares of its Securities as set
forth below 975,000 shares of Securities being hereinafter referred to as the
"Optional Securities"). The Firm Securities and the Optional Securities are
herein collectively called the "OfferedSecurities". The Company hereby agrees
with the several Underwriters named in Schedule B hereto ("Underwriters") as
follows:

       2.  Representations and Warranties of the Company and the Selling
Stockholders.

           (a)  The Company represents and warrants to, and agrees with, the
several Underwriters that:

                (i)   A registration statement (No. 333-39912) relating to the
Offered Securities, including a form of prospectus, has been filed with the
Securities and Exchange Commission ("Commission") and either (i) has been
declared effective under the Securities Act of 1933 ("Act") and is not
proposed to be amended or (ii) is proposed to be amended by amendment or post-
effective amendment. If such registration statement ("initial registration
statement") has been declared effective, either (i) an additional registration
statement ("additional registration statement") relating to the Offered
Securities may have been filed with the Commission pursuant to Rule 462(b)
("Rule 462(b)") under the Act and, if so filed, has become effective upon
filing pursuant to such Rule and the Offered

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Securities all have been duly registered under the Act pursuant to the initial
registration statement and, if applicable, the additional registration
statement or (ii) such an additional registration statement is proposed to be
filed with the Commission pursuant to Rule 462(b) and will become effective
upon filing pursuant to such Rule and upon such filing the Offered Securities
will all have been duly registered under the Act pursuant to the initial
registration statement and such additional registration statement. If the
Company does not propose to amend the initial registration statement or if an
additional registration statement has been filed and the Company does not
propose to amend it, and if any post-effective amendment to either such
registration statement has been filed with the Commission prior to the
execution and delivery of this Agreement, the most recent amendment (if any)
to each such registration statement has been declared effective by the
Commission or has become effective upon filing pursuant to Rule 462(c) ("Rule
462(c)") under the Act or, in the case of the additional registration
statement, Rule 462(b). For purposes of this Agreement, "Effective Time" with
respect to the initial registration statement or, if filed prior to the
execution and delivery of this Agreement, the additional registration
statement means (i) if the Company has advised the Representatives that it
does not propose to amend such registration statement, the date and time as of
which such registration statement, or the most recent post-effective amendment
thereto (if any) filed prior to the execution and delivery of this Agreement,
was declared effective by the Commission or has become effective upon filing
pursuant to Rule 462(c), or (ii) if the Company has advised the
Representatives that it proposes to file an amendment or post-effective
amendment to such registration statement, the date and time as of which such
registration statement, as amended by such amendment or post-effective
amendment, as the case may be, is declared effective by the Commission. If an
additional registration statement has not been filed prior to the execution
and delivery of this Agreement but the Company has advised the Representatives
that it proposes to file one, "Effective Time" with respect to such additional
registration statement means the date and time as of which such registration
statement is filed and becomes effective pursuant to Rule 462(b). "Effective
Date" with respect to the initial registration statement or the additional
registration statement (if any) means the date of the Effective Time thereof.
The initial registration statement, as amended at its Effective Time,
including all information contained in the additional registration statement
(if any) and deemed to be a part of the initial registration statement as of
the Effective Time of the additional registration statement pursuant to the
General Instructions of the Form on which it is filed and including all
information (if any) deemed to be a part of the initial registration statement
as of its Effective Time pursuant to Rule 430A(b) ("Rule 430A(b)") under the
Act, is hereinafter referred to as the "Initial Registration Statement". The
additional registration statement, as amended at its Effective Time, including
the contents of the initial registration statement incorporated by reference
therein and including all information (if any) deemed to be a part of the
additional registration statement as of its Effective Time pursuant to Rule
430A(b), is hereinafter referred to as the "Additional Registration
Statement". The Initial Registration Statement and the Additional Registration
Statement are herein referred to collectively as the "Registration Statements"
and individually as a "Registration Statement". The form of prospectus
relating to the Offered Securities, as first filed with the Commission
pursuant to and in accordance with Rule 424(b) ("Rule 424(b)") under the Act
or (if no such filing is required) as included in a Registration Statement, is
hereinafter referred to as the "Prospectus". No document has been or will be
prepared or distributed in reliance on Rule 434 under the Act.

          (ii)   If the Effective Time of the Initial Registration Statement
is prior to the execution and delivery of this Agreement: (i) on the Effective
Date of the Initial Registration Statement, the Initial Registration Statement
conformed in all material respects to the requirements of the Act and the
rules and regulations of the Commission ("Rules and Regulations") and did not
include any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary to make the statements therein
not misleading, (ii) on the Effective Date of the Additional Registration
Statement (if

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any), each Registration Statement conformed, or will conform, in all material
respects to the requirements of the Act and the Rules and Regulations and did
not include, or will not include, any untrue statement of a material fact and
did not omit, or will not omit, to state any material fact required to be
stated therein or necessary to make the statements therein not misleading and
(iii) on the date of this Agreement, the Initial Registration Statement and,
if the Effective Time of the Additional Registration Statement is prior to the
execution and delivery of this Agreement, the Additional Registration
Statement each conforms, and at the time of filing of the Prospectus pursuant
to Rule 424(b) or (if no such filing is required) at the Effective Date of the
Additional Registration Statement in which the Prospectus is included, each
Registration Statement and the Prospectus will conform, in all material
respects to the requirements of the Act and the Rules and Regulations, and
neither of such documents includes, or will include, any untrue statement of a
material fact or omits, or will omit, to state any material fact required to
be stated therein or necessary to make the statements therein not misleading.
If the Effective Time of the Initial Registration Statement is subsequent to
the execution and delivery of this Agreement: on the Effective Date of the
Initial Registration Statement, the Initial Registration Statement and the
Prospectus will conform in all material respects to the requirements of the
Act and the Rules and Regulations, neither of such documents will include any
untrue statement of a material fact or will omit to state any material fact
required to be stated therein or necessary to make the statements therein not
misleading, and no Additional Registration Statement has been or will be
filed. The two preceding sentences do not apply to statements in or omissions
from a Registration Statement or the Prospectus based upon written information
furnished to the Company by any Underwriter through the Representatives
specifically for use therein, it being understood and agreed that the only
such information is that described as such in Section 7(c) hereof.

          (iii)   The Company has been duly incorporated and is an existing
corporation in good standing under the laws of the State of Delaware, with power
and authority (corporate and other) to own its properties and conduct its
business as described in the Prospectus; and the Compny is duly qualified to do
business as a foreign corporation in good standing in all other jurisdictions in
which its ownership or lease of property or the conduct of its business requires
such qualification and where the failure to do so would individually or in the
aggregate have a material adverse effect on the condition (financial or other),
business, properties or results of operations of the Company and its
subsidiaries taken a whole ("Material Adverse Effect").

          (iv)  Each subsidiary of the Company has been duly incorporated and
is an existing corporation in good standing under the laws of the jurisdiction
of its incorporation, with power and authority (corporate and other) to own
its properties and conduct its business as described in the Prospectus; and
each subsidiary of the Company is duly qualified to do business as a foreign
corporation in good standing in all other jurisdictions in which its ownership
or lease of property or the conduct of its business requires such
qualification, except where the failure to so qualify would not have a
Material Adverse Effect; all of the issued and outstanding capital stock of
each subsidiary of the Company has been duly authorized and validly issued and
is fully paid and nonassessable; and the capital stock of each subsidiary
owned by the Company, directly or through subsidiaries, is owned free from
liens, encumbrances and defects.

          (v)  The Offered Securities and all other outstanding shares of
capital stock of the Company have been duly authorized; all outstanding shares
of capital stock of the Company are, and, when the Offered Securities have
been delivered and paid for in accordance with this Agreement on each Closing
Date (as defined below), such Offered Securities will have been, validly
issued, fully paid and nonassessable and will conform to the description
thereof contained in the Prospectus; and the Offered

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Securities are free of any preemptive rights arising under the Restated
Certificate of Incorporation or the Delaware General Corporation Law.

          (vi)  Except as disclosed in the Prospectus, there are no contracts,
agreements or understandings between the Company and any person that would
give rise to a valid claim against the Company or any Underwriter for a
brokerage commission, finder's fee or other like payment in connection with
this offering.

          (vii)  Except for the Virata Corporation Registration Rights Agreement
dated as of November 17, 1999, the D2 Registration Rights Agreement dated as of
February 1, 2000, or the Inverness Registration Rights Agreement dated as of
April 27,2000, there are no contracts, agreements or understandings between the
Company and any person granting such person the right to require the Company to
include any securities of the Company owned or to be owned by such person in the
securities registered pursuant to a Registration Statement other than those
rights that have either been waived, satisfied or fulfilled, subject to and in
accordance with the underwriting cutback provisions thereof.

          (viii)  No consent, approval, authorization, or order of, or filing
with, any governmental agency or body or any court is required for the
consummation of the transactions contemplated by this Agreement in connection
with the issuance and sale of the Offered Securities by the Company, except
such as have been obtained and made under the Act and such as may be required
under state securities laws.

          (ix)  The execution, delivery and performance of this Agreement, and
the issuance and sale of the Offered Securities will not result in a breach or
violation of any of the terms and provisions of, or constitute a default
under, any statute, any rule, regulation or order of any governmental agency
or body or any court, domestic or foreign, having jurisdiction over the
Company or any subsidiary of the Company or any of their properties or the
charter or by-laws of the Company or any such subsidiary, and the Company has
full power and authority to authorize, issue and sell the Offered Securities
as contemplated by this Agreement.

          (x)  The execution, delivery and performance of this Agreement, and
the issuance and sale of the Offered Securities will not result in a breach or
violation of any of the terms of, or constitute a default under any agreement
or instrument to which the Company or any subsidiary is a party or by which
the Company or any such subsidiary is bound or to which any of the properties
of the Company or any such subsidiary is subject which would have a Material
Adverse Effect.

          (xi)  This Agreement has been duly authorized, executed and
delivered by the Company.

          (xii)   Except as disclosed in the Prospectus, the Company and its
subsidiaries have good and marketable title to all real properties and all other
properties and assets owned by them, in each case free from liens, encumbrances
and defects that would materially affect the value thereof or materially
interfere with the use made or to be made thereof by them; and except as
disclosed in the Prospectus, the Company and its subsidiaries hold any leased
real or personal property under valid and enforceable leases with no exceptions
that would materially interfere with the use made or to be made thereof by them.

          (xiii)  The Company and its subsidiaries possess adequate
certificates, authorities or

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permits issued by appropriate governmental agencies or bodies necessary to
conduct the business now operated by them and have not received any notice of
proceedings relating to the revocation or modification of any such
certificate, authority or permit that, if determined adversely to the Company
or any of its subsidiaries, would individually or in the aggregate have a
Material Adverse Effect.

          (xiv)  No labor dispute with the employees of the Company or any
subsidiary exists or, to the knowledge of the Company, is imminent that might
have a Material Adverse Effect.

          (xv)  The Company and its subsidiaries own, possess or can acquire
on reasonable terms, adequate trademarks, trade names and other rights to
inventions, know-how, patents, copyrights, confidential information and other
intellectual property (collectively, "intellectual property rights") necessary
to conduct the business now operated by them, or presently employed by them,
and have not received any notice of infringement of or conflict with asserted
rights of others with respect to any intellectual property rights that, if
determined adversely to the Company or any of its subsidiaries, would
individually or in the aggregate have a Material Adverse Effect.

         (xvi)  Except as disclosed in the Prospectus, neither the Company nor
any of its subsidiaries is in violation of any statute, any rule, regulation,
decision or order of any governmental agency or body or any court, domestic or
foreign, relating to the use, disposal or release of hazardous or toxic
substances or relating to the protection or restoration of the environment or
human exposure to hazardous or toxic substances (collectively, "environmental
laws"), owns or operates any real property contaminated with any substance
that is subject to any environmental laws, is liable for any off-site disposal
or contamination pursuant to any environmental laws, or is subject to any
claim relating to any environmental laws, which violation, contamination,
liability or claim would individually or in the aggregate have a Material
Adverse Effect; and the Company is not aware of any pending investigation
which might lead to such a claim.

          (xvii)  Except as disclosed in the Prospectus, there are no pending
actions, suits or proceedings against or affecting the Company, any of its
subsidiaries or any of their respective properties that, if determined
adversely to the Company or any of its subsidiaries, would individually or in
the aggregate have a Material Adverse Effect, or would materially and
adversely affect the ability of the Company to perform its obligations under
this Agreement, or which are otherwise material in the context of the sale of
the Offered Securities; and no such actions, suits or proceedings are
threatened or, to the Company's knowledge, contemplated.

          (xviii)  The financial statements included in each Registration
Statement and the Prospectus present fairly the financial position of the
Company and its consolidated subsidiaries as of the dates shown and their
results of operations and cash flows for the periods shown, and such financial
statements have been prepared in conformity with the generally accepted
accounting principles in the United States applied on a consistent basis; the
schedules included in each Registration Statement present fairly the
information required to be stated therein; and the assumptions used in
preparing the pro forma financial statements included in each Registration
Statement and the Prospectus provide a reasonable basis for presenting the
significant effects directly attributable to the transactions or events
described therein, the related pro forma adjustments give appropriate effect
to those assumptions, and the pro forma columns therein reflect the proper
application of those adjustments to the corresponding historical financial
statement amounts.

          (xix)  Except as disclosed in the Prospectus, since the date of the
latest audited

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financial statements included in the Prospectus there has been no material
adverse change, nor any development or event involving a prospective material
adverse change, in the condition (financial or other), business, properties or
results of operations of the Company and its subsidiaries taken as a whole,
and, except as disclosed in or contemplated by the Prospectus, there has been
no dividend or distribution of any kind declared, paid or made by the Company
on any class of its capital stock.

          (xx)  The Company is not and, after giving effect to the offering
and sale of the Offered Securities and the application of the proceeds thereof
as described in the Prospectus, will not be an "investment company" as defined
in the Investment Company Act of 1940.

                (b)  Each Selling Stockholder severally and not jointly
represents and warrants to, and agrees with, the several Underwriters that:

                     (i)  Such Selling Stockholder has and on each Closing
Date hereinafter mentioned will have valid and unencumbered title to the
Offered Securities to be delivered by such Selling Stockholder on such Closing
Date and full right, power and authority to enter into this Agreement and to
sell, assign, transfer and deliver the Offered Securities to be delivered by
such Selling Stockholder on such Closing Date hereunder; and upon the delivery
of and payment for the Offered Securities on each Closing Date hereunder the
several Underwriters will acquire valid and unencumbered title to the Offered
Securities to be delivered by such Selling Stockholder on such Closing Date.

                     (ii)  If the Effective Time of the Initial Registration
Statement is prior to the execution and delivery of this Agreement: (A) on the
Effective Date of the Initial Registration Statement, the Initial Registration
Statement conformed in all respects to the requirements of the Act and the
Rules and Regulations and did not include any untrue statement of a material
fact or omit to state any material fact required to be stated therein or
necessary to make the statements therein not misleading, (B) on the Effective
Date of the Additional Registration Statement (if any), each Registration
Statement conformed, or will conform, in all respects to the requirements of
the Act and the Rules and Regulations did not include, or will not include,
any untrue statement of a material fact and did not omit, or will not omit, to
state any material fact required to be stated therein or necessary to make the
statements therein not misleading, and (C) on the date of this Agreement, the
Initial Registration Statement and, if the Effective Time of the Additional
Registration Statement is prior to the execution and delivery of this
Agreement, the Additional Registration Statement each conforms, and at the
time of filing of the Prospectus pursuant to Rule 424(b) or (if no such filing
is required) at the Effective Date of the Additional Registration Statement in
which the Prospectus is included, each Registration Statement and the
Prospectus will conform, in all respects to the requirements of the Act and
the Rules and Regulations, and neither of such documents includes, or will
include, any untrue statement of a material fact or omits, or will omit, to
state any material fact required to be stated therein or necessary to make the
statements therein not misleading. If the Effective Time of the Initial
Registration Statement is subsequent to the execution and delivery of this
Agreement: on the Effective Date of the Initial Registration Statement, the
Initial Registration Statement and the Prospectus will conform in all respects
to the requirements of the Act and the Rules and Regulations, neither of such
documents will include any untrue statement of a material fact or will omit to
state any material fact required to be stated therein or necessary to make the
statements therein not misleading. The two preceding sentences (1) shall only
apply to statements in or omissions from a Registration Statement or the
Prospectus based upon written information furnished to the Company by any such
Selling Stockholder specifically for use therein and (2) do not apply to
statements in or omissions from a Registration Statement or the Prospectus
based upon written information furnished to the Company by any Underwriter
through the Representatives specifically for use therein, it being understood
and agreed that the only such information is that described as such in

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Section 7(c).

                     (iii)  Except as disclosed in the Prospectus, there are
no contracts, agreements or understandings between such Selling Stockholder
and any person that would give rise to a valid claim against such Selling
Stockholder or any Underwriter for a brokerage commission, finder's fee or
other like payment in connection with this offering.

       3.  Purchase, Sale and Delivery of Offered Securities.  On the basis of
the representations, warranties and agreements herein contained, but subject
to the terms and conditions herein set forth, the Company and each Selling
Stockholder agree, severally and not jointly, to sell to each Underwriter, and
each Underwriter agrees, severally and not jointly, to purchase from the
Company and each Selling Stockholder, at a weighted average purchase price of
$67.39 per share, that number of Firm Securities (rounded up or down, as
determined by Credit Suisse First Boston Corporation ("CSFBC") in its
discretion, in order to avoid fractions) obtained by multiplying 5,880,000
Firm Securities in the case of the Company and the number of Firm Securities
set forth opposite the name of such Selling Stockholder in Schedule A hereto,
in the case of a Selling Stockholder, in each case by a fraction the numerator
of which is the number of Firm Securities set forth opposite the name of such
Underwriter in Schedule B hereto and the denominator of which is the total
number of Firm Securities.

       Certificates in negotiable form for the Offered Securities to be sold by
the Selling Stockholders hereunder have been placed in custody, for delivery
under this Agreement, under Custody Agreements made with American Stock Transfer
& Trust Company, as custodian ("Custodian").  Each Selling Stockholder agrees
that the shares represented by the certificates held in custody for the Selling
Stockholders under such Custody Agreements are subject to the interests of the
Underwriters hereunder, that the arrangements made by the Selling Stockholders
for such custody are to that extent irrevocable, and that the obligations of the
Selling Stockholders hereunder shall not be terminated by operation of law,
whether by the death of any individual Selling Stockholder or the occurrence of
any other event, or in the case of a trust, by the death of any trustee or
trustees or the termination of such trust.  If any individual Selling
Stockholder or any such trustee or trustees should die, or if any other such
event should occur, or if any of such trusts should terminate, before the
delivery of the Offered Securities hereunder, certificates for such Offered
Securities shall be delivered by the Custodian in accordance with the terms and
conditions of this Agreement as if such death or other event or termination had
not occurred, regardless of whether or not the Custodian shall have received
notice of such death or other event or termination.

       The Company and the Custodian will deliver the Firm Securities to the
Representatives for the accounts of the Underwriters, against payment of the
purchase price in Federal (same day) funds by official bank check or checks or
wire transfer to an account at a bank acceptable to CSFBC drawn to the order of
Virata Corporation  in the case of  5,880,000 shares of Firm Securities and
Virata Corporation in the case of  620,000 shares of Firm Securities, at the
office of CSFB, at   7:00 A.M., New York time, on  July 18, 2000, or at such
other time not later than seven full business days thereafter as CSFBC and the
Company determine, such time being herein referred to as the "First Closing
Date".  The certificates for the Firm Securities so to be delivered will be in
definitive form, in such denominations and registered in such names as CSFBC
requests and will be made available for checking and packaging at the above
office of  CSFB at least 24 hours prior to the First Closing Date.

       In addition, upon written notice from CSFBC given to the Company from
time to time not more than 30 days subsequent to the date of the Prospectus, the
Underwriters may purchase all or less than all of the Optional Securities at the
purchase price per Security to be paid for the Firm Securities. The

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Company agrees to sell to the Underwriters the number of shares of Optional
Securities specified in such notice and the Underwriters by a fraction the
numerator of which is the number of shares set forth opposite agree, severally
and not jointly, to purchase such Optional Securities. Such Optional
Securities shall be purchased for the account of each Underwriter in the same
proportion as the number of Firm Securities set forth opposite such
Underwriter's name bears to the total number of Firm Securities (subject to
adjustment by CSFBC to eliminate fractions) and may be purchased by the
Underwriters only for the purpose of covering over-allotments made in
connection with the sale of the Firm Securities. No Optional Securities shall
be sold or delivered unless the Firm Securities previously have been, or
simultaneously are, sold and delivered. The right to purchase the Optional
Securities or any portion thereof may be exercised from time to time and to
the extent not previously exercised may be surrendered and terminated at any
time upon notice by CSFBC to the Company.

       Each time for the delivery of and payment for the Optional Securities,
being herein referred to as an "Optional Closing Date", which may be the First
Closing Date (the First Closing Date and each Optional Closing Date, if any,
being sometimes referred to as a "Closing Date"), shall be determined by CSFBC
but shall be not later than five full business days after written notice of
election to purchase Optional Securities is given. The Company will deliver the
Optional Securities being purchased on each Optional Closing Date to the
Representatives for the accounts of the several Underwriters, against payment of
the purchase price therefor in Federal (same day) funds by official bank check
or checks or wire transfer to an account at a bank acceptable to CSFBC drawn to
the order of Virata Corporation, at the office of CSFBC. The certificates for
the Optional Securities being purchased on each Optional Closing Date will be in
definitive form, in such denominations and registered in such names as CSFBC
requests upon reasonable notice prior to such Optional Closing Date and will be
made available for checking and packaging at the office of  CSFBC at a
reasonable time in advance of such Optional Closing Date.

       4.  Offering by Underwriters.  It is understood that the several
Underwriters propose to offer the Offered Securities for sale to the public as
set forth in the Prospectus.

       5.  Certain Agreements of the Company and the Selling Stockholders.  The
Company agrees with the several Underwriters and the Selling Stockholders
that:

          (a)  If the Effective Time of the Initial Registration Statement is
prior to the execution and delivery of this Agreement, the Company will file
the Prospectus with the Commission pursuant to and in accordance with
subparagraph (1) (or, if applicable and if consented to by CSFBC, subparagraph
(4)) of Rule 424(b) not later than the earlier of (A) the second business day
following the execution and delivery of this Agreement or (B) the fifteenth
business day after the Effective Date of the Initial Registration Statement.

          The Company will advise CSFBC promptly of any such filing pursuant to
Rule 424(b). If the Effective Time of the Initial Registration Statement is
prior to the execution and delivery of this Agreement and an additional
registration statement is necessary to register a portion of the Offered
Securities under the Act but the Effective Time thereof has not occurred as of
such execution and delivery, the Company will file the additional registration
statement or, if filed, will file a post-effective amendment thereto with the
Commission pursuant to and in accordance with Rule 462(b) on or prior to 10:00
P.M., New York time, on the date of this Agreement or, if earlier, on or prior
to the time the Prospectus is printed and distributed to any Underwriter, or
will make such filing at such later date as shall have been consented to by
CSFBC.

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          (b)  The Company will advise CSFBC promptly of any proposal to amend
or supplement the initial or any additional registration statement as filed or
the related prospectus or the Initial Registration Statement, the Additional
Registration Statement (if any) or the Prospectus and will not effect such
amendment or supplementation without CSFBC's consent; and the Company will
also advise CSFBC promptly of the effectiveness of each Registration Statement
(if its Effective Time is subsequent to the execution and delivery of this
Agreement) and of any amendment or supplementation of a Registration Statement
or the Prospectus and of the institution by the Commission of any stop order
proceedings in respect of a Registration Statement and will use its best
efforts to prevent the issuance of any such stop order and to obtain as soon
as possible its lifting, if issued.

          (c)  If, at any time when a prospectus relating to the Offered
Securities is required to be delivered under the Act in connection with sales
by any Underwriter or dealer, any event occurs as a result of which the
Prospectus as then amended or supplemented would include an untrue statement
of a material fact or omit to state any material fact necessary to make the
statements therein, in the light of the circumstances under which they were
made, not misleading, or if it is necessary at any time to amend the
Prospectus to comply with the Act, the Company will promptly notify CSFBC of
such event and will promptly prepare and file with the Commission, at its own
expense, an amendment or supplement which will correct such statement or
omission or an amendment which will effect such compliance. Neither CSFBC's
consent to, nor the Underwriters' delivery of, any such amendment or
supplement shall constitute a waiver of any of the conditions set forth in
Section 6.

          (d)  As soon as practicable, but not later than the Availability
Date (as defined below), the Company will make generally available to its
securityholders an earnings statement covering a period of at least 12 months
beginning after the Effective Date of the Initial Registration Statement (or,
if later, the Effective Date of the Additional Registration Statement) which
will satisfy the provisions of Section 11(a) of the Act. For the purpose of
the preceding sentence, "Availability Date" means the 45th day after the end
of the fourth fiscal quarter following the fiscal quarter that includes such
Effective Date, except that, if such fourth fiscal quarter is the last quarter
of the Company's fiscal year, "Availability Date" means the 90th day after the
end of such fourth fiscal quarter.

          (e)  The Company will furnish to the Representatives copies of each
Registration Statement (five (5) of which will be signed and will include all
exhibits), each related preliminary prospectus, and, so long as a prospectus
relating to the Offered Securities is required to be delivered under the Act
in connection with sales by any Underwriter or dealer, the Prospectus and all
amendments and supplements to such documents, in each case in such quantities
as CSFBC requests. The Prospectus shall be so furnished on or prior to 3:00
P.M., New York time, on the business day following the later of the execution
and delivery of this Agreement or the Effective Time of the Initial
Registration Statement. All other documents shall be so furnished as soon as
available. The Company and the Selling Stockholders will pay the expenses of
printing and distributing to the Underwriters all such documents.

          (f)  The Company will arrange for the qualification of the Offered
Securities for sale under the laws of such jurisdictions as CSFBC designates
and will continue such qualifications in effect so long as required for the
distribution; provided however that nothing in this provision shall require
the Company to provide a general consent to service of process in such
jurisdictions.

          (g)  During the per the period of five (5) years hereafter, the
Company will furnish to the Representatives and, upon request, to each of the
other Underwriters, as soon as practicable after the end of each fiscal year,
a copy of its annual report to stockholders for such year; and the Company
will furnish to

                                       9
<PAGE>

the Representatives (i) as soon as available, a copy of each report and any
definitive proxy statement of the Company filed with the Commission under the
Securities Exchange Act of 1934 or mailed to stockholders, and (ii) from time
to time, such other information concerning the Company as CSFBC may reasonably
request.

          (h)  For a period of 90 days after the date of the public offering
of the Offered Securities, the Company will not offer, sell, contract to sell,
pledge or otherwise dispose of, directly or indirectly, or file with the
Commission a registration statement under the Act relating to, any additional
shares of its Securities or securities convertible into or exchangeable or
exercisable for any shares of its Securities, or publicly disclose the
intention to make any such offer, sale, pledge, disposition or filing, without
the prior written consent of CSFBC, except (i) grants of employee stock
options pursuant to the terms of a plan in effect on the date hereof, (ii)
issuances of Securities pursuant to the exercise of such options or the
exercise of any other employee stock options or warrants outstanding on the
date hereof, (iii) issuances of Securities pursuant to the Company's other
benefit plans in effect on the date hereof, (iv) issuances of Securities in
connection with the Company's anticipated acquisition of Excess Bandwidth
Corporation, or (v) issuances of Securities in connection with any future
acquisition by the Company, as long as the aggregate market value of the
securities issued in all such acquisitions does not exceed $67 million and
such securities may not be sold by the holders thereof within 90 days after
the date of the Prospectus.

          (i)  The Company and each Selling Stockholder agree with the several
Underwriters that the Company and such Selling Stockholder will pay all
expenses incident to the performance of the obligations of the Company and
such Selling Stockholder, as the case may be, under this Agreement, for any
filing fees and other expenses (including fees and disbursements of counsel)
in connection with qualification of the Offered Securities for sale under the
laws of such jurisdictions as CSFBC designates and the printing of memoranda
relating thereto, for any travel expenses of the Company's officers and
employees and any other expenses of the Company in connection with attending
or hosting meetings with prospective purchasers of the Offered Securities, for
any transfer taxes on the sale by the Selling Stockholders of the Offered
Securities to the Underwriters and for expenses incurred in distributing
preliminary prospectuses and the Prospectus (including any amendments and
supplements thereto) to the Underwriters.

          (j)  Each Selling Stockholder agrees to deliver to CSFBC, attention:
Transactions Advisory Group on or prior to the First Closing Date a properly
completed and executed United States Treasury Department Form W-9 (or other
applicable form or statement specified by Treasury Department regulations in
lieu thereof).

          (k)  Each Selling Stockholder agrees, for a period of 90 days after
the date of the initial public offering of the Offered Securities, not to
offer, sell, contract to sell, pledge or otherwise dispose of, directly or
indirectly, any additional shares of the Securities of the Company or
securities convertible into or exchangeable or exercisable for any shares of
Securities, enter into a transaction which would have the same effect, or
publicly disclose the intention to make any such offer, sale, pledge or
disposition, without, in each case, the prior written consent of CSFBC.

       6.  Conditions of the Obligations of the Underwriters.  The obligations
of the several Underwriters to purchase and pay for the Firm Securities on the
First Closing Date and the Optional Securities to be purchased on each
Optional Closing Date will be subject to the accuracy of the representations
and warranties on the part of the Company and the Selling Stockholders herein,
to the accuracy of the statements of Company officers made pursuant to the
provisions hereof, to the performance by the Company and the Selling
Stockholders of their obligations hereunder and to the following additional

                                       10
<PAGE>

conditions precedent:

          (a)  The Representatives shall have received a letter, dated the
date of delivery thereof (which, if the Effective Time of the Initial
Registration Statement is prior to the execution and delivery of this
Agreement, shall be on or prior to the date of this Agreement or, if the
Effective Time of the Initial Registration Statement is subsequent to the
execution and delivery of this Agreement, shall be prior to the filing of the
amendment or post-effective amendment to the registration statement to be
filed shortly prior to such Effective Time), of PricewaterhouseCoopers LLP
confirming that they are independent public accountants within the meaning of
the Act and the applicable published Rules and Regulations thereunder and
stating to the effect that:

               (i)  in their opinion the financial statements, summary of
     earnings and schedules examined by them and included in the Registration
     Statements comply as to form in all material respects with the applicable
     accounting requirements of the Act and the related published Rules and
     Regulations;

               (ii)  they have performed the procedures specified by the
     American Institute of Certified Public Accountants for a review of
     interim financial information as described in Statement of Auditing
     Standards No. 71, Interim Financial Information, on the unaudited
     financial statements included in the Registration Statements;

               (iii)  on the basis of the review referred to in clause (ii)
     above, a reading of the latest available interim financial statements of
     the Company, inquiries of officials of the Company who have
     responsibility for financial and accounting matters and other specified
     procedures, nothing came to their attention that caused them to believe
     that:

                    (A)  the unaudited financial statements included in the
        Registration Statements do not comply as to form in all material
        respects with the applicable accounting requirements of the Act and
        the related published Rules and Regulations or any material
        modifications should be made to such unaudited financial statements
        for them to be in conformity with generally accepted accounting
        principles;

                    (B)  at the date of the latest available balance sheet
        read by such accountants, or at a subsequent specified date not more
        than three business days prior to the date of such letter, there was
        any change in the capital stock or any increase in short-term
        indebtedness or long-term debt of the Company and its consolidated
        subsidiaries or, at the date of the latest available balance sheet
        read by such accountants, there was any decrease in consolidated net
        current assets or net assets, as compared with amounts shown on the
        latest balance sheet included in the Prospectus; or

                    (C)  for the period from the closing date of the latest
        income statement included in the Prospectus to the closing date of the
        latest available income statement read by such accountants there were
        any decreases, as compared with the corresponding period of the
        previous year and with the period of corresponding length ended the
        date of the latest income statement included in the Prospectus, in net
        operating income, in the total or per share amounts of consolidated
        net income;

                                       11
<PAGE>

     except in all cases set forth in clauses (A), (B) and (C) above for
     changes, increases or decreases which the Prospectus discloses have
     occurred or may occur or which are described in such letter; and

               (iv)  they have compared specified dollar amounts (or
     percentages derived from such dollar amounts) and other financial
     information contained in the Registration Statements (in each case to the
     extent that such dollar amounts, percentages and other financial
     information are derived from the general accounting records of the
     Company and its subsidiaries subject to the internal controls of the
     Company's accounting system or are derived directly from such records by
     analysis or computation) with the results obtained from inquiries, a
     reading of such general accounting records or other procedures specified
     in such letter and have found such dollar amounts, percentages and other
     financial information to be in agreement with such results, except as
     otherwise specified in such letter.

For purposes of this subsection, (i) if the Effective Time of the Initial
Registration Statement is subsequent to the execution and delivery of this
Agreement, "Registration Statements" shall mean the initial registration
statement as proposed to be amended by the amendment or post-effective amendment
to be filed shortly prior to its Effective Time, (ii) if the Effective Time of
the Initial Registration Statement is prior to the execution and delivery of
this Agreement but the Effective Time of the Additional Registration is
subsequent to such execution and delivery, "Registration Statements" shall mean
the Initial Registration Statement and the additional registration statement as
proposed to be filed or as proposed to be amended by the post-effective
amendment to be filed shortly prior to its Effective Time, and (iii)
"Prospectus" shall mean the prospectus included in the Registration Statements.

          (b)  The Representatives shall have received a letter, dated the
date of delivery thereof (which, if the Effective Time of the Initial
Registration Statement is prior to the execution and delivery of this
Agreement, shall be on or prior to the date of this Agreement or, if the
Effective Time of the Initial Registration Statement is subsequent to the
execution and delivery of this Agreement, shall be prior to the filing of the
amendment or post-effective amendment to the registration statement to be
filed shortly prior to such Effective Time), of Arthur Andersen LLP confirming
that they are independent public accountants to D2 Technologies, Inc. within
the meaning of the Act and the applicable published Rules and Regulations
thereunder and stating to the effect that:

               (i)  in their opinion the financial statements, summary of
     earnings and schedules examined by them and included in the Registration
     Statements and relating to D2 Technologies, Inc. comply as to form in all
     material respects with the applicable accounting requirements of the Act
     and the related published Rules and Regulations;

               (ii)  they have compared specified dollar amounts (or
     percentages derived from such dollar amounts) and other financial
     information contained in the Registration Statements (in each case to the
     extent that such dollar amounts, percentages and other financial
     information are derived from the general accounting records of D2
     Technologies, Inc. subject to the internal controls of D2 Technologies,
     Inc.'s accounting system or are derived directly from such records by
     analysis or computation) with the results obtained from inquiries, a
     reading of such general accounting records or other procedures specified
     in such letter and have found such dollar amounts, percentages and other
     financial information to be in agreement with such results, except as
     otherwise specified in such letter.

                                       12
<PAGE>

For purposes of this subsection, (i) if the Effective Time of the Initial
Registration Statement is subsequent to the execution and delivery of this
Agreement, "Registration Statements" shall mean the initial registration
statement as proposed to be amended by the amendment or post-effective amendment
to be filed shortly prior to its Effective Time, (ii) if the Effective Time of
the Initial Registration Statement is prior to the execution and delivery of
this Agreement but the Effective Time of the Additional Registration is
subsequent to such execution and delivery, "Registration Statements" shall mean
the Initial Registration Statement and the additional registration statement as
proposed to be filed or as proposed to be amended by the post-effective
amendment to be filed shortly prior to its Effective Time, and (iii)
"Prospectus" shall mean the prospectus included in the Registration Statements.

          (c)  The Representatives shall have received a letter, dated the
date of delivery thereof (which, if the Effective Time of the Initial
Registration Statement is prior to the execution and delivery of this
Agreement, shall be on or prior to the date of this Agreement or, if the
Effective Time of the Initial Registration Statement is subsequent to the
execution and delivery of this Agreement, shall be prior to the filing of the
amendment or post-effective amendment to the registration statement to be
filed shortly prior to such Effective Time), of Kost, Forer & Gabbay, A Member
of Ernst & Young International, confirming that they are independent public
accountants to Inverness Systems Ltd. within the meaning of the Act and the
applicable published Rules and Regulations thereunder and stating to the
effect that:

               (i)  in their opinion the financial statements, summary of
     earnings and schedules examined by them and included in the Registration
     Statements and relating to Inverness Systems Ltd. comply as to form in
     all material respects with the applicable accounting requirements of the
     Act and the related published Rules and Regulations;

               (ii)  they have compared specified dollar amounts (or
     percentages derived from such dollar amounts) and other financial
     information contained in the Registration Statements (in each case to the
     extent that such dollar amounts, percentages and other financial
     information are derived from the general accounting records of Inverness
     Systems Ltd. subject to the internal controls of Inverness Systems Ltd.'s
     accounting system or are derived directly from such records by analysis
     or computation) with the results obtained from inquiries, a reading of
     such general accounting records or other procedures specified in such
     letter and have found such dollar amounts, percentages and other
     financial information to be in agreement with such results, except as
     otherwise specified in such letter.

For purposes of this subsection, (i) if the Effective Time of the Initial
Registration Statement is subsequent to the execution and delivery of this
Agreement, "Registration Statements" shall mean the initial registration
statement as proposed to be amended by the amendment or post-effective amendment
to be filed shortly prior to its Effective Time, (ii) if the Effective Time of
the Initial Registration Statement is prior to the execution and delivery of
this Agreement but the Effective Time of the Additional Registration is
subsequent to such execution and delivery, "Registration Statements" shall mean
the Initial Registration Statement and the additional registration statement as
proposed to be filed or as proposed to be amended by the post-effective
amendment to be filed shortly prior to its Effective Time, and (iii)
"Prospectus" shall mean the prospectus included in the Registration Statements.

                                       13
<PAGE>

          (d)  If the Effective Time of the Initial Registration Statement is
not prior to the execution and delivery of this Agreement, such Effective Time
shall have occurred not later than 10:00 P.M., New York time, on the date of
this Agreement or such later date as shall have been consented to by CSFBC. If
the Effective Time of the Additional Registration Statement (if any) is not
prior to the execution and delivery of this Agreement, such Effective Time
shall have occurred not later than 10:00 P.M., New York time, on the date of
this Agreement or, if earlier, the time the Prospectus is printed and
distributed to any Underwriter, or shall have occurred at such later date as
shall have been consented to by CSFBC. If the Effective Time of the Initial
Registration Statement is prior to the execution and delivery of this
Agreement, the Prospectus shall have been filed with the Commission in
accordance with the Rules and Regulations and Section 5(a) of this Agreement.
Prior to such Closing Date, no stop order suspending the effectiveness of a
Registration Statement shall have been issued and no proceedings for that
purpose shall have been instituted or, to the knowledge of any Selling
Stockholder, the Company or the Representatives, shall be contemplated by the
Commission.

          (e)  Subsequent to the execution and delivery of this Agreement,
there shall not have occurred (i) any change, or any development or event
involving a prospective change, in the condition (financial or other),
business, properties or results of operations of the Company and its
subsidiaries taken as one enterprise which, in the judgment CSFBC, is material
and adverse and makes it impractical or inadvisable to proceed with completion
of the public offering or the sale of and payment for the Offered Securities;
(ii) any material suspension or material limitation of trading in securities
generally on the New York Stock Exchange, or any setting of minimum prices for
trading on such exchange, or any suspension of trading of any securities of
the Company on any exchange or in the over-the-counter market; (iii) any
banking moratorium declared by U.S. Federal or New York authorities; or (iv)
any outbreak or escalation of major hostilities in which the United States is
involved, any declaration of war by Congress or any other substantial national
or international calamity or emergency if, in the judgment of CSFBC, the
effect of any such outbreak, escalation, declaration, calamity or emergency
makes it impractical or inadvisable to proceed with completion of the public
offering or the sale of and payment for the Offered Securities.

          (f)  The Representatives shall have received an opinion, dated such
Closing Date, of Gibson, Dunn & Crutcher LLP, counsel for the Company, to the
effect that:

               (i)  The Company has been duly incorporated and is an existing
     corporation in good standing under the laws of the State of Delaware,
     with corporate power and authority to own its properties and conduct its
     business as described in the Prospectus; and the Company is duly
     qualified to do business as a foreign corporation in good standing in all
     other jurisdictions in which its ownership or lease of property or the
     conduct of its business requires such qualification and where the failure
     to do so would individually or in the aggregate have a Material Adverse
     Effect;

               (ii)  The Offered Securities delivered on such Closing Date and
     all other outstanding shares of the Common Stock of the Company have been
     duly authorized and validly issued, are fully paid and nonassessable and
     conform to the description thereof contained in the Prospectus; and the
     stockholders of the Company have no preemptive rights with respect to the
     Securities arising under the Company's Amended and Restated Certificate
     of Incorporation or the Delaware General Corporation Law;

               (iii)  Each of Virata Santa Clara Corporation, Virata Raleigh
     Corporation and D2 Technologies, Inc. (the "Subsidiaries") has been duly
     incorporated and is validly existing as a corporation in good standing
     under the laws of the jurisdiction of its incorporation, has corporate
     power and authority

                                       14
<PAGE>

     to own, lease and operate its properties and to conduct its business as
     described in the Prospectus and, to the best knowledge of such counsel,
     is duly qualified as a foreign corporation to transact business and is in
     good standing in each jurisdiction in which such qualification is
     required, whether by reason of the ownership or leasing of property or
     the conduct of business, except for such jurisdictions where the failure
     to so qualify or to be in good standing would not, individually or in the
     aggregate, have a Material Adverse Effect;

               (iv)  All of the issued and outstanding capital stock of the
     Subsidiaries have been duly authorized and validly issued, is fully paid
     and non-assessable and are owned by the Company, directly or through
     subsidiaries, free and clear of any perfected security interest and to
     the knowledge of counsel, any other security interest, mortgage, pledge,
     lien, encumbrance, or any pending or threatened claim;

               (v)  To such counsel's knowledge, except for the Virata
     Corporation Registration Rights Agreement dated as of November 17, 1999,
     the D2 Registration Rights Agreement dated as of February 1, 2000, or the
     Inverness Registration Rights Agreement dated as of 27, 2000, there are
     no contracts, agreements or understandings known to such counsel between
     the Company and any person granting such person the right to require the
     Company to include any securities of the Company owned or to be owned by
     such person in the securities registered pursuant to the Registration
     Statement, other than those rights that have been waived, satisfied
     subject to and in accordance with the underwriting cutback provisions
     thereof;

               (vi)  The Company is not and, after giving effect to the
     offering and sale of the Offered Securities and the application of the
     proceeds thereof as described in the Prospectus, will not be an
     "investment company" as defined in the Investment Company Act of 1940;

               (vii)  To such counsel's knowledge, no consent, approval,
     authorization or order of, or filing with, any governmental agency or
     body or any court is required for the consummation of the transactions
     contemplated by this Agreement in connection with the issuance or sale of
     the Offered Securities by the Company, except such as have been obtained
     and made under the Act and such as may be required under state securities
     laws;

               (viii)  The execution, delivery and performance of this
     Agreement and the consummation of the transactions herein or therein
     contemplated will not result in a breach or violation of (a) to our
     knowledge, any of the terms and provisions of, or constitute a default
     under, any statute, any rule, regulation or order of any governmental
     agency or body or any court having jurisdiction over the Company or any
     subsidiary of the Company or any of their properties, or any agreement or
     instrument to which the Company or any such subsidiary is a party or by
     which the Company or any such subsidiary is bound or to which any of the
     properties of the Company or any such subsidiary is subject known to such
     counsel and which would result in a Material Adverse Effect, or (b) the
     charter or by-laws of the Company or any such subsidiary, and the Company
     has full power and authority to authorize, issue and sell the Offered
     Securities as contemplated by this Agreement;

               (ix)  The Initial Registration Statement was declared effective
     under the Act as of the date and time specified in such opinion, the
     Additional Registration Statement (if any) was filed and became effective
     under the Act as of the date and time (if determinable) specified in such
     opinion, the Prospectus either was filed with the Commission pursuant to
     the subparagraph of Rule 424(b) specified in such opinion on the date
     specified therein or was included in the Initial Registration Statement or
     the Additional Registration Statement (as the case may be), and, to the
     best of the knowledge of such

                                       15
<PAGE>

     counsel, and no stop order suspending the effectiveness of a Registration
     Statement or any part thereof has been issued and no proceedings for that
     purpose have been instituted or are pending or contemplated under the
     Act; such counsel believes each Registration Statement, and each
     amendment or supplement thereto, as of their effective dates, complied as
     to form in all material respects with the requirements of the Act and the
     Rules and Regulations; such counsel have no reason to believe that any
     part of a Registration Statement or any amendment thereto, as of its
     effective date, contained any untrue statement of a material fact or
     omitted to state any material fact required to be stated therein or
     necessary to make the statements therein not misleading or that each
     Registration Statement, the Prospectus or any amendment or supplement to
     either of them, as of their effective date or issue date, respectively,
     or as of such Closing Date, contained any untrue statement of a material
     fact or omitted to state any material fact necessary in order to make the
     statements therein, in the light of the circumstances under which they
     were made, not misleading; the descriptions in the Registration
     Statements and Prospectus of statutes, legal and governmental proceedings
     and contracts and other documents are accurate and fairly present the
     information required to be shown; and such counsel do not know of any
     legal or governmental proceedings required to be described in a
     Registration Statement or the Prospectus which are not described as
     required or of any contracts or documents of a character required to be
     described in a Registration Statement or the Prospectus or to be filed as
     exhibits to a Registration Statement which are not described and filed as
     required; it being understood that such counsel need express no opinion
     or belief as to the financial statements or other financial or
     statistical data contained in the Registration Statements or the
     Prospectus; and

               (x)  This Agreement has been duly authorized, executed and
     delivered by the Company.

          (g)  The Representatives shall have received an opinion in a form
acceptable to CSFB, dated such Closing Date, of each of Mathys & Squire and
Pennie & Edmonds, patent counsel for the Company.

          (h)  The Representatives shall have received an opinion, dated such
Closing Date, of Gibson, Dunn & Crutcher LLP, counsel for Virata Limited, to
the effect that:

               (i)  Virata Limited has been duly incorporated and is validly
     existing as a corporation in good standing under the laws of the
     jurisdiction in which it is chartered or organized, with full corporate
     power and authority to own or lease, as the case may be, and to operate
     its properties and conduct its business as described in the Prospectus,
     and has all necessary authorizations in the United Kingdom to enable it
     to do business as a foreign corporation in those jurisdictions in which
     it conducts business and which are described in the Prospectus; and

               (ii)  all the outstanding shares of capital stock of Virata
     Limited have been duly and validly authorized and issued and are fully
     paid and nonassessable, and, except as otherwise set forth in the
     Prospectus, all outstanding shares of capital stock of Virata Limited are
     owned by the Company either directly or through wholly owned subsidiaries
     free and clear of any perfected security interest and, to the knowledge
     of such counsel, after due inquiry, any other security interest, claim,
     lien or encumbrance.

          (i)  The Representatives shall have received an opinion or opinions,
dated such Closing Date, of counsel for each of the Selling Stockholders, to
the effect that:

               (i)  Assuming that the several Underwriters purchase the
     Offered Securities to be delivered by the Selling Stockholders on the
     Closing Date hereunder for value and without notice of any

                                       16
<PAGE>

     adverse claim as such term is used in Section ______ of the New York
     Commercial Code as of the date hereof, the delivery of the certificates
     representing such Offered Securities sold by the Selling Stockholders
     either registered in the name of the Underwriters or effectively endorsed
     to the Underwriters in blank will pass to the Underwriters all rights
     that the transferor has in such Offered Securities free of all adverse
     claims;

               (ii)  To such counsel's knowledge, no consent, approval,
     authorization or order of, or filing with, any governmental agency or
     body or any court is required to be obtained or made by any Selling
     Stockholder for the consummation of the transactions contemplated by the
     Custody Agreement or this Agreement in connection with the sale of the
     Offered Securities sold by the Selling Stockholders, except such as have
     been obtained and made under the Act and such as may be required under
     state securities laws;

               (iii)  To such counsel's knowledge, the execution, delivery and
     performance of the Custody Agreement and this Agreement and the
     consummation of the transactions therein and herein contemplated will not
     result in a breach or violation of any of the terms and provisions of, or
     constitute a default under, any statute, any rule, regulation or order of
     any governmental agency or body or any court having jurisdiction over any
     Selling Stockholder or any of their properties or any agreement or
     instrument to which any Selling Stockholder is a party or by which any
     Selling Stockholder is bound or to which any of the properties of any
     Selling Stockholder is subject, or the charter or by-laws of any Selling
     Stockholder which is a corporation;

               (iv)  The Power of Attorney and related Custody Agreement with
     respect to each Selling Stockholder has been duly authorized, executed
     and delivered by such Selling Stockholder and constitute valid and
     legally binding obligations of each such Selling Stockholder enforceable
     in accordance with their terms, subject to bankruptcy, insolvency,
     fraudulent transfer, reorganization, moratorium and similar laws of
     general applicability relating to or affecting creditors' rights and to
     general equity principles; and

               (v)  This Agreement has been duly authorized, executed and
     delivered by each Selling Stockholder.

           (j)  The Representatives shall have received from Wilson Sonsini
Goodrich & Rosati, Professional Corporation, counsel for the Underwriters,
such opinion or opinions, dated such Closing Date, with respect to the
incorporation of the Company, the validity of the Offered Securities delivered
on such Closing Date, the Registration Statements, the Prospectus and other
related matters as the Representatives may require, and the Company shall have
furnished to such counsel such documents as they request for the purpose of
enabling them to pass upon such matters.

          (k)  The Representatives shall have received a certificate, dated
such Closing Date, of the Chief Executive Officer, President or any Vice
President and a principal financial or accounting officer of the Company in
which such officers, to the best of their knowledge after reasonable
investigation, shall state that: the representations and warranties of the
Company in this Agreement are true and correct; the Company has complied with
all agreements and satisfied all conditions on its part to be performed or
satisfied hereunder at or prior to such Closing Date; no stop order suspending
the effectiveness of any Registration Statement has been issued and no
proceedings for that purpose have been instituted or are contemplated by the
Commission; the Additional Registration Statement (if any) satisfying the
requirements of subparagraphs (1) and (3) of Rule 462(b) was filed pursuant to
Rule 462(b), including payment of the applicable filing fee in accordance with
Rule 111(a) or (b) under the Act, prior to the time the Prospectus was printed
and distributed to any Underwriter; and, subsequent to the date of the most

                                       17
<PAGE>

recent financial statements in the Prospectus, there has been no material
adverse change, nor any development or event involving a prospective material
adverse change, in the condition (financial or other), business, properties or
results of operations of the Company and its subsidiaries taken as a whole
except as set forth in or contemplated by the Prospectus or as described in
such certificate.

          (l)  The Representatives shall have received a letter, dated such
Closing Date, of PricewaterhouseCoopers, LLP which meets the requirements of
subsection (a) of this Section, except that the specified date referred to in
such subsection will be a date not more than three days prior to such Closing
Date for the purposes of this subsection.

          (m)  The Representatives shall have received a letter, dated such
Closing Date, of Arthur Andersen, LLP which meets the requirements of
subsection (b) of this Section, except that the specified date referred to in
such subsection will be a date not more than three days prior to such Closing
Date for the purposes of this subsection.

          (n)  The Representatives shall have received a letter, dated such
Closing Date, of Kost, Forer & Gabbay which meets the requirements of
subsection (c) of this Section, except that the specified date referred to in
such subsection will be a date not more than three days prior to such Closing
Date for the purposes of this subsection.

          (o)  On or prior to the date of this Agreement, The Representatives
shall have received lockup letters from each of executive officers and
directors of the Company.

     The Selling Stockholders and the Company will furnish the Representatives
with such conformed copies of such opinions, certificates, letters and
documents as the Representatives reasonably request. CSFBC may in its sole
discretion waive on behalf of the Underwriters compliance with any conditions
to the obligations of the Underwriters hereunder, whether in respect of an
Optional Closing Date or otherwise.

     7.  Indemnification and Contribution.

          (a)  The Company will indemnify and hold harmless each Underwriter,
its partners, directors and officers and each person, if any, who controls
such Underwriter within the meaning of Section 15 of the Act, against any
losses, claims, damages or liabilities, joint or several, to which such
Underwriter may become subject, under the Act or otherwise, insofar as such
losses, claims, damages or liabilities (or actions in respect thereof) arise
out of or are based upon any untrue statement or alleged untrue statement of
any material fact contained in any Registration Statement, the Prospectus, or
any amendment or supplement thereto, or any related preliminary prospectus, or
arise out of or are based upon the omission or alleged omission to state
therein a material fact required to be stated therein or necessary to make the
statements therein not misleading, and will reimburse each Underwriter for any
legal or other expenses reasonably incurred by such Underwriter in connection
with investigating or defending any such loss, claim, damage, liability or
action as such expenses are incurred; provided, however, that the Company will
not be liable in any such case to the extent that any such loss, claim, damage
or liability arises out of or is based upon an untrue statement or alleged
untrue statement in or omission or alleged omission from any of such documents
in reliance upon and in conformity with written information furnished to the
Company by any Underwriter through the Representatives specifically for use
therein, it being understood and agreed that the only such information
furnished by any Underwriter consists of the information described as such in
subsection (c) below; and provided, further, that with respect to any untrue
statement or alleged untrue statement in or omission or alleged omission from
any preliminary prospectus the indemnity agreement

                                       18
<PAGE>

contained in this subsection (a) shall not inure to the benefit of any
Underwriter from whom the person asserting any such losses, claims, damages or
liabilities purchased the Offered Securities concerned, to the extent that a
prospectus relating to such Offered Securities was required to be delivered by
such Underwriter under the Act in connection with such purchase and any such
loss, claim, damage or liability of such Underwriter results from the fact
that there was not sent or given to such person, at or prior to the written
confirmation of the sale of such Offered Securities to such person, a copy of
the Prospectus if the Company had previously furnished copies thereof to such
Underwriter.

          (b)  The Selling Stockholders, severally and not jointly, will
indemnify and hold harmless each Underwriter, its partners, directors and
officers and each person who controls such Underwriter within the meaning of
Section 15 of the Act, against any losses, claims, damages or liabilities, to
which such Underwriter may become subject, under the Act or otherwise, insofar
as such losses, claims, damages or liabilities (or actions in respect thereof)
arise out of or are based upon any untrue statement or alleged untrue
statement of any material fact contained in any Registration Statement, the
Prospectus, or any amendment or supplement thereto, or any related preliminary
prospectus, or arise out of or are based upon the omission or alleged omission
to state therein a material fact required to be stated therein or necessary to
make the statements therein not misleading, in each case to the extend, but
only to the extent, that such untrue statement or alleged untrue statement or
omission or alleged omission was made in reliance upon and in conformity with
written information furnished to the Company by such Selling Stockholder
specifically for use therein, and will reimburse each Underwriter for any
legal or other expenses reasonably incurred by such Underwriter in connection
with investigating or defending any such loss, claim, damage, liability or
action as such expenses are incurred; provided, however, that the Selling
Stockholders will not be liable in any such case to the extent that any such
loss, claim, damage or liability arises out of or is based upon an untrue
statement or alleged untrue statement in or omission or alleged omission from
any of such documents in reliance upon and in conformity with written
information furnished to the Company by an Underwriter through the
Representatives specifically for use therein, it being understood and agreed
that the only such information furnished by any Underwriter consists of the
information described as such in subsection (c) below; provided further that
the liability of each Selling Stockholder shall be limited to the amount of
the net proceeds actually received by such Selling Stockholder in connection
with this offering.

          (c)  Each Underwriter will severally and not jointly indemnify and
hold harmless the Company, its directors and officers and each person, if any,
who controls the Company within the meaning of Section 15 of the Act, and each
Selling Stockholder against any losses, claims, damages or liabilities to
which the Company or such Selling Stockholder may become subject, under the
Act or otherwise, insofar as such losses, claims, damages or liabilities (or
actions in respect thereof) arise out of or are based upon any untrue
statement or alleged untrue statement of any material fact contained in any
Registration Statement, the Prospectus, or any amendment or supplement
thereto, or any related preliminary prospectus, or arise out of or are based
upon the omission or the alleged omission to state therein a material fact
required to be stated therein or necessary to make the statements therein not
misleading, in each case to the extent, but only to the extent, that such
untrue statement or alleged untrue statement or omission or alleged omission
was made in reliance upon and in conformity with written information furnished
to the Company by such Underwriter through the Representatives specifically
for use therein, and will reimburse any legal or other expenses reasonably
incurred by the Company and each Selling Stockholder in connection with
investigating or defending any such loss, claim, damage, liability or action
as such expenses are incurred, it being understood and agreed that the only
such information furnished by any Underwriter consists of (i) the following
information in the Prospectus furnished on behalf of each Underwriter: the
last paragraph at the bottom of the cover page concerning the terms of the
offering by the Underwriters, the legend concerning over-allotments and,
stabilizing on the inside front cover page, the concession and reallowance
figures appearing in the sixth,

                                       19
<PAGE>

thirteenth, fourteenth and sixteenth paragraph under the caption
"Underwriting" and the information contained in the paragraphs under the
caption "Underwriting."

          (d)  Promptly after receipt by an indemnified party under this
Section of notice of the commencement of any action, such indemnified party
will, if a claim in respect thereof is to be made against the indemnifying
party under subsection (a), (b) or (c) above, notify the indemnifying party of
the commencement thereof; but the omission so to notify the indemnifying party
will not relieve it from any liability which it may have to any indemnified
party otherwise than under subsection (a), (b) or (c) above. In case any such
action is brought against any indemnified party and it notifies the
indemnifying party of the commencement thereof, the indemnifying party will be
entitled to participate therein and, to the extent that it may wish, jointly
with any other indemnifying party similarly notified, to assume the defense
thereof, with counsel satisfactory to such indemnified party (who shall not,
except with the consent of the indemnified party, be counsel to the
indemnifying party), and after notice from the indemnifying party to such
indemnified party of its election so to assume the defense thereof, the
indemnifying party will not be liable to such indemnified party under this
Section for any legal or other expenses subsequently incurred by such
indemnified party in connection with the defense thereof other than reasonable
costs of investigation.

          (e)  If the indemnification provided for in this Section is
unavailable or insufficient to hold harmless an indemnified party under
subsection (a), (b) or (c) above, then each indemnifying party shall
contribute to the amount paid or payable by such indemnified party as a result
of the losses, claims, damages or liabilities referred to in subsection (a),
(b) or (c) above (i) in such proportion as is appropriate to reflect the
relative benefits received by the Company and the Selling Stockholders on the
one hand and the Underwriters on the other from the offering of the Securities
or (ii) if the allocation provided by clause (i) above is not permitted by
applicable law, in such proportion as is appropriate to reflect not only the
relative benefits referred to in clause (i) above but also the relative fault
of the Company and the Selling Stockholders on the one hand and the
Underwriters on the other in connection with the statements or omissions which
resulted in such losses, claims, damages or liabilities as well as any other
relevant equitable considerations. The relative benefits received by the
Company and the Selling Stockholders on the one hand and the Underwriters on
the other shall be deemed to be in the same proportion as the total net
proceeds from the offering (before deducting expenses) received by the Company
and the Selling Stockholders bear to the total underwriting discounts and
commissions received by the Underwriters. The relative fault shall be
determined by reference to, among other things, whether the untrue or alleged
untrue statement of a material fact or the omission or alleged omission to
state a material fact relates to information supplied by the Company, the
Selling Stockholders or the Underwriters and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
untrue statement or omission. The amount paid by an indemnified party as a
result of the losses, claims, damages or liabilities referred to in the first
sentence of this subsection (e) shall be deemed to include any legal or other
expenses reasonably incurred by such indemnified party in connection with
investigating or defending any action or claim which is the subject of this
subsection (e). Notwithstanding the provisions of this subsection (e), (1) no
Underwriter shall be required to contribute any amount in excess of the amount
by which the total price at which the Securities underwritten by it and
distributed to the public were offered to the public exceeds the amount of any
damages which such Underwriter has otherwise been required to pay by reason of
such untrue or alleged untrue statement or omission or alleged omission and
(2) no Selling Stockholder shall be required to contribute any amount in
excess of the amount of any damages which such Selling Stockholder has
otherwise been required to pay by reason of such untrue or alleged untrue
statement or omission or alleged omission. No person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Act) shall be
entitled to contribution from any person who was not guilty of such fraudulent
misrepresentation. The Underwriters' obligations in this subsection (e) to
contribute are several in proportion to their respective underwriting
obligations and not joint. The Selling Stockholders' obligations in this
subsection (e) to

                                       20
<PAGE>

contribute are several in proportion to their respective share of the
securities offered in the public and not joint.

          (f)  The obligations of the Company and the Selling Stockholders
under this Section shall be in addition to any liability which the Company and
the Selling Stockholders may otherwise have and shall extend, upon the same
terms and conditions, to each person, if any, who controls any Underwriter
within the meaning of the Act; and the obligations of the Underwriters under
this Section shall be in addition to any liability which the respective
Underwriters may otherwise have and shall extend, upon the same terms and
conditions, to each director of the Company, to each officer of the Company
who has signed a Registration Statement and to each person, if any, who
controls the Company within the meaning of the Act and the Selling
Stockholders.

       8.  Default of Underwriters.  If any Underwriter or Underwriters
default in their obligations to purchase Offered Securities hereunder on
either the First or any Optional Closing Date and the aggregate number of
shares of Offered Securities that such defaulting Underwriter or Underwriters
agreed but failed to purchase does not exceed 10% of the total number of
shares that the Underwriters are obligated to purchase on such Closing Date,
CSFBC may make arrangements satisfactory to the Company and the Selling
Stockholders for the purchase of such Offered Securities by other persons,
including any of the Underwriters, but if no such arrangements are made by
such Closing Date, the non-defaulting Underwriters shall be obligated
severally, in proportion to their respective commitments hereunder, to
purchase the Offered Securities that such defaulting Underwriters agreed but
failed to purchase on such Closing Date. If any Underwriter or Underwriters so
default and the aggregate number of shares of Offered Securities with respect
to which such default or defaults occur exceeds 10% of the total number of
shares of Offered Securities that the Underwriters are obligated to purchase
on such Closing Date and arrangements satisfactory to CSFBC, the Company and
the Selling Stockholders for the purchase of such Offered Securities by other
persons are not made within 36 hours after such default, this Agreement will
terminate without liability on the part of any non-defaulting Underwriter, the
Company and the Selling Stockholders, except as provided in Section 9
(provided that if such default occurs with respect to Optional Securities
after the First Closing Date, this Agreement will not terminate as to the Firm
Securities or any Optional Securities purchased prior to such termination). As
used in this Agreement, the term "Underwriter" includes any person substituted
for an Underwriter under this Section. Nothing herein will relieve a
defaulting Underwriter from liability for its default.

       9.     Survival of Certain Representations and Obligations.  The
respective indemnities, agreements, representations, warranties and other
statements of the Selling Stockholders, the Company or its officers and of the
several Underwriters set forth in or made pursuant to this Agreement will
remain in full force and effect, regardless of any investigation, or statement
as to the results thereof, made by or on behalf of any Underwriter, any
Selling Stockholder, the Company or any of their respective representatives,
officers or directors or any controlling person, and will survive delivery of
and payment for the Offered Securities. If this Agreement is terminated
pursuant to Section 8 or if for any reason the purchase of the Offered
Securities by the Underwriters is not consummated, the Company and the Selling
Stockholders shall remain responsible for the expenses to be paid or
reimbursed by it pursuant to Section 5 and the respective obligations of the
Company, the Selling Stockholders, and the Underwriters pursuant to Section 7
shall remain in effect, and if any Offered Securities have been purchased
hereunder the representations and warranties in Section 2 and all obligations
under Section 5 shall also remain in effect; provided, however, nothing
contained in this Section 9 shall prohibit the Company from seeking damages
against a defaulting underwriter causing a termination pursuant to Section 8
hereof. If the purchase of the

                                       21
<PAGE>

Offered Securities by the Underwriters is not consummated for any reason other
than solely because of the termination of this Agreement pursuant to Section 8
or the occurrence of any event specified in clause (iii), (iv) or (v) of Section
6(c), the Company and the Selling Stockholders will reimburse the Underwriters
for all out-of-pocket expenses (including fees and disbursements of counsel)
reasonably incurred by them in connection with the offering of the Offered
Securities.

       10.  Notices.  All communications hereunder will be in writing and, if
sent to the Underwriters, will be mailed, delivered, sent by facsimile or
telegraphed and confirmed to the Representatives at c/o Credit Suisse First
Boston Corporation, Eleven Madison Avenue, New York, N.Y. 10010-3629,
Attention: Investment Banking Department--Transactions Advisory Group, or, if
sent to the Company, will be mailed, delivered, sent by facsimile and
confirmed to it at Virata Corporation, 2933 Bunker Hill Lane, Suite 201, Santa
Clara, California 95054, Attention: Andrew M. Vought; or if sent to the
Selling Stockholders, will be mailed, delivered and confirmed to Andrew M.
Vought, as Attorney in Fact at 2933 Bunker Hill Lane, Suite 201, Santa Clara,
California 95054 provided, however, that any notice to an Underwriter pursuant
to Section 7 will be mailed, delivered, sent by facsimile or telegraphed and
confirmed to such Underwriter.

       11.   Successors.  This Agreement will inure to the benefit of and be
binding upon the parties hereto and their respective personal representatives
and successors and the officers and directors and controlling persons referred
to in Section 7, and no other person will have any right or obligation
hereunder.

       12.   Representation of Underwriters.  The Representatives will act for
the several Underwriters in connection with this financing, and any action
under this Agreement taken by the Representatives jointly or by CSFBC will be
binding upon all the Underwriters. Charles Cotton and Andrew M. Vought will
act for the Selling Stockholders in connection with such transactions, and any
action under or in respect of this Agreement taken by Charles Cotton or Andrew
M. Vought will be binding on all the Selling Stockholders.

       13.   Counterparts.  This Agreement may be executed in any number of
counterparts, each of which shall be deemed to be an original, but all such
counterparts shall together constitute one and the same Agreement.

       14.   Applicable Law.  This Agreement shall be governed by, and
construed in accordance with, the laws of the State of New York, without
regard to principles of conflicts of laws.

       The Company hereby submits to the non-exclusive jurisdiction of the
Federal and state courts in the Borough of Manhattan in The City of New York in
any suit or proceeding arising out of or relating to this Agreement or the
transactions contemplated hereby.

                                       22
<PAGE>

If the foregoing is in accordance with the Representatives' understanding of our
agreement, kindly sign and return to the Company one of the counterparts hereof,
whereupon it will become a binding agreement between the Company and the several
Underwriters in accordance with its terms.

                              Very truly yours,

                                  Virata Corporation

                                         By_____________________________
                                                 Charles Cotton
                                                 Chief Executive Officer



                                  SELLING STOCKHOLDERS


                                         By_____________________________

                                                 Attorney in Fact


The foregoing Underwriting Agreement
  is hereby confirmed and accepted
  as of the date first above written.

  CREDIT SUISSE FIRST BOSTON CORPORATION
  UBS WARBURG  LLC
  FLEETBOSTON ROBERTSON STEPHENS INC.
  THOMAS WEISEL PARTNERS LLC

     Acting on behalf of themselves and
       as the  Representatives of the
       several Underwriters

  BY  CREDIT SUISSE FIRST BOSTON CORPORATION

  By________________________________________

                                       23
<PAGE>

                                 SCHEDULE A

<TABLE>
<CAPTION>
---------------------------------------------------------------
                                           Number of Firm
Name of Selling Stockholder                  Securities
-------------------------------------      --------------
---------------------------------------------------------------
<S>                                    <C>

Jonathan Masel.......................                    67,078
---------------------------------------------------------------

Jonathan Masel Holdings Ltd..........                    67,078
---------------------------------------------------------------

Jonathan Masel Investments Ltd.......                    67,078
---------------------------------------------------------------

Super Tech Venture Capital Corp......                    33,401
---------------------------------------------------------------

Apex Venture Capital Corp............                    13,360
---------------------------------------------------------------

Holland Venture B.V. ................                   346,832
---------------------------------------------------------------

Global Business Investment Corp......                    20,736
---------------------------------------------------------------

Chieh-Wen Tsai.......................                     1,000
---------------------------------------------------------------

Richard Lowenthal....................                     2,923
---------------------------------------------------------------

Ling Niu.............................                       480
---------------------------------------------------------------

Joanne Masel.........................                        34
---------------------------------------------------------------

     Total...........................                   620,000
---------------------------------------------------------------
</TABLE>

                                       24
<PAGE>

                                 SCHEDULE B

<TABLE>
<CAPTION>
-----------------------------------------------------------------------------------------------------------
                                                        Number of Firm
Underwriter                                               Securities          Number of Optional Securities
--------------------------------------------------   --------------------     -----------------------------
-----------------------------------------------------------------------------------------------------------
<S>                                                 <C>                       <C>

Credit Suisse First Boston Corporation............                 2,627,300                        394,095
-----------------------------------------------------------------------------------------------------------

SBC Warburg Dillon Read LLC.......................                 1,160,900                        174,135
-----------------------------------------------------------------------------------------------------------

FleetBoston Robertson Stephens Inc................                 1,160,900                        174,135
-----------------------------------------------------------------------------------------------------------

Thomas Weisel Partners LLC........................                 1,160,900                        174,135
-----------------------------------------------------------------------------------------------------------

Banc of America Securities LLC....................                    65,000                          9,750
-----------------------------------------------------------------------------------------------------------

Dain Rauscher Incorporated........................                    65,000                          9,750
-----------------------------------------------------------------------------------------------------------

E*Offering Corp...................................                    65,000                          9,750
-----------------------------------------------------------------------------------------------------------

Frost Securities, Inc.............................                    65,000                          9,750
-----------------------------------------------------------------------------------------------------------

Invemed Associates LLC............................                    65,000                          9,750
-----------------------------------------------------------------------------------------------------------

Kaufman Bros., L.P................................                    65,000                          9,750
-----------------------------------------------------------------------------------------------------------

  Total...........................................                 6,500,000                        975,000
-----------------------------------------------------------------------------------------------------------
</TABLE>

                                       25


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