1

                                                                     EXHIBIT 1.1

                                4,500,000 SHARES

                               PDF SOLUTIONS, INC.

                    COMMON STOCK PAR VALUE $0.00015 PER SHARE


                             UNDERWRITING AGREEMENT


                                                                   July __, 2001


CREDIT SUISSE FIRST BOSTON CORPORATION,
ROBERTSON STEPHENS, INC.
DAIN RAUSCHER INCORPORATED
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. PDF Solutions, Inc., a Delaware corporation
("COMPANY"), proposes to issue and sell 4,500,000 shares ("FIRM SECURITIES") of
its Common Stock, par value $0.00015 per share ("SECURITIES") and also proposes
to issue and sell to the Underwriters, at the option of the Underwriters, an
aggregate of not more than 675,000 additional shares ("OPTIONAL SECURITIES") of
its Securities as set forth below. The Firm Securities and the Optional
Securities are herein collectively called the "OFFERED SECURITIES." As part of
the offering contemplated by this Agreement, ______________________________ (the
"DESIGNATED UNDERWRITER") has agreed to reserve out of the Firm Securities
purchased by it under this Agreement, up to 225,000 shares, for sale to the
Company's directors, officers, employees and other parties associated with the
Company (collectively, "PARTICIPANTS"), as set forth in the Prospectus (as
defined herein) under the heading "Underwriting" (the "DIRECTED SHARE PROGRAM").
The Firm Securities to be sold by the Designated Underwriter pursuant to the
Directed Share Program (the "DIRECTED SHARES") will be sold by the Designated
Underwriter pursuant to this Agreement at the public offering price. Any
Directed Shares not subscribed for by the end of the business day on which this
Agreement is executed will be offered to the public by the Underwriters as set
forth in the Prospectus. The Company hereby agrees with the several Underwriters
named in Schedule A hereto ("UNDERWRITERS") as follows:

        2. Representations and Warranties of the Company. The Company represents
and warrants to, and agrees with, the several Underwriters that:

            (a) A registration statement (No. 333-43192) relating to the Offered
Securities ("UNDERLYING SHARES"), 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 Securities all have been duly registered
under the Act pursuant to the initial registration statement and, if applicable,
the additional


                                       1
   2

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.

            (b) 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 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 any),
each Registration Statement conformed, or will conform, in all 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


                                       2
   3

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, 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(b) hereof.

            (c) 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 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.

            (d) 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;
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.

            (e) 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 stockholders of the Company have no
preemptive rights with respect to the Securities.

            (f) 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.

            (g) There are no contracts, agreements or understandings between the
Company and any person granting such person the right to require the Company to
file a registration statement under the Act with respect to any securities of
the Company owned or to be owned by such person or to require the Company to
include such securities in the securities registered pursuant to a Registration
Statement or in any securities being registered pursuant to any other
registration statement filed by the Company under the Act.

            (h) The Offered Securities have been approved for listing on The
Nasdaq Stock Market's National Market, subject to notice of issuance.

            (i) 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


                                       3
   4

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.

            (j) 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 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, 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.

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

            (l) 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.

            (m) The Company and its subsidiaries possess adequate certificates,
authorities or 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 on the condition (financial or other), business, properties or
results of operations of the Company and its subsidiaries taken as a whole
("MATERIAL ADVERSE EFFECT").

            (n) 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.

            (o) 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. The intellectual property rights
of the Company referred to in the prospectus do not, to the Company's knowledge,
infringe or conflict with any intellectual property right of any third party.

            (p) 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.


                                       4
   5

            (q) 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.

            (r) 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 and 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.

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

            (t) The execution and delivery of the Agreement and Plan of Merger
dated as of __________ ___, 2001 (the "Merger Agreement") between PDF Solutions,
Inc., a California corporation (the "California Corporation"), and the Company,
effecting the reincorporation of the California Corporation under the laws of
the State of Delaware, was duly authorized by all necessary corporate action on
the part of each of the California Corporation and the Company. Each of the
California Corporation and the Company had all corporate power and authority to
execute and deliver the Merger Agreement, to file the Merger Agreement with the
Secretary of State of California and the Secretary of State of Delaware and to
consummate the reincorporation contemplated by the Merger Agreement, and the
Merger Agreement at the time of execution and filing constituted a valid and
binding obligation of each of the California Corporation and the Company.

            (u) 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.

            (v) The Company (i) has notified each holder of a currently
outstanding option issued under the Company's 1996 Stock Option Plan and 1997
Stock Plan (the "Plans"), and each person who has acquired Securities pursuant
to the exercise of any option granted under the Plans that pursuant to the terms
of the Plans, none of such options or shares may be sold or otherwise
transferred or disposed of for a period of 180 days after the date of the
initial public offering of the Offered Securities and (ii) has imposed a
stop-transfer instruction with the Company's transfer agent in order to enforce
the foregoing lock-up provision imposed pursuant to the Plans.

            (w) Except as disclosed in the Prospectus, all outstanding
Securities, and all securities convertible into or exercisable or exchangeable
for Securities, are subject to valid and binding agreements (collectively,
"LOCK-UP AGREEMENTS") that restrict the holders thereof from selling, making any
short sale of, granting any option for the purchase of, or otherwise
transferring or disposing of, any of such Securities,


                                       5
   6

or any such securities convertible into or exercisable or exchangeable for
Securities, for a period of 180 days after the date of the initial public
offering of the Offered Securities without the prior written consent of Credit
Suisse First Boston Corporation.

            (x) The Company (i) has notified each stockholder who is party to
the First Amended and Restated Rights Agreement dated August 4, 2000 (the
"RIGHTS AGREEMENT"), that pursuant to the terms of the Rights Agreement, none of
the shares of the Company's capital stock held by such stockholder may be sold
or otherwise transferred or disposed of for a period of 180 days after the date
of the initial public offering of the Offered Securities and (ii) has imposed a
stop-transfer instruction with the Company's transfer agent in order to enforce
the foregoing lock-up provision imposed pursuant to the Rights Agreement.

            (y) Furthermore, the Company represents and warrants to the
Underwriters that (i) the Registration Statement, the Prospectus and any
preliminary prospectus comply, and any further amendments or supplements thereto
will comply, with any applicable laws or regulations of foreign jurisdictions in
which the Prospectus or any preliminary prospectus, as amended or supplemented,
if applicable, are distributed in connection with the Directed Share Program,
and that (ii) no authorization, approval, consent, license, order, registration
or qualification of or with any government, governmental instrumentality or
court, other than such as have been obtained, is necessary under the securities
law and regulations of foreign jurisdictions in which the Directed Shares are
offered outside the United States.

            (z) The Company has not offered, or caused the Underwriters to
offer, any offered Securities to any person pursuant to the Directed Share
Program with the specific intent to unlawfully influence (i) a customer or
supplier of the Company to alter the customer's or supplier's level or type of
business with the Company or (ii) a trade journalist or publication to write or
publish favorable information about the Company or its products.

        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 agrees to sell to the
Underwriters, and the Underwriters agree, severally and not jointly, to purchase
from the Company, at a purchase price of $ per share, the respective numbers of
shares of Firm Securities set forth opposite the names of the Underwriters in
Schedule A hereto.

        The Company 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 Credit Suisse First Boston Corporation ("CSFBC")
drawn to the order of the Company at the office of Orrick, Herrington &
Sutcliffe LLP ("ORRICK HERRINGTON & SUTCLIFFE"), 1020 Marsh Road, Menlo Park,
California 94025, at 10:00 A.M., New York time, on          , 2001, 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". For purposes of Rule 15c6-1 under the Securities Exchange Act of 1934,
the First Closing Date (if later than the otherwise applicable settlement date)
shall be the settlement date for payment of funds and delivery of securities for
all the Offered Securities sold pursuant to the offering. 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 CSFBC 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 Company
agrees to sell to the Underwriters the number of shares of Optional Securities
specified in such notice and the Underwriters 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 shares of Firm Securities set forth opposite such Underwriter's name
bears to the total number of shares of


                                       6
   7

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 the Company, at the above office of Orrick, Herrington & Sutcliffe.
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 above
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. The Company agrees with the
several Underwriters 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.

            (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



                                       7
   8

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 (four 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 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.

            (g) During the period of five 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 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) The Company will pay all expenses incident to the performance of
its obligations under this Agreement, for any filing fees and other expenses
(including fees and disbursements of counsel) incurred 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 the filing fee incident to, and the reasonable fees and
disbursements of counsel to the Underwriters in connection with, the review by
the National Association of Securities Dealers, Inc. (the "NASD") of the Offered
Securities, 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 and for expenses
incurred in distributing preliminary prospectuses and the Prospectus (including
any amendments and supplements thereto) to the Underwriters.

            (i) For a period of 180 days after the date of the initial 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


                                       8
   9

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 issuances of Securities pursuant to the
conversion or exchange of convertible or exchangeable securities or the exercise
of warrants or options, in each case outstanding on the date hereof, grants of
employee stock options pursuant to the terms of a plan in effect on the date
hereof or issuances of Securities pursuant to the exercise of such options.

            (j) The Company agrees to use its best efforts to cause (i) each of
its directors, officers and stockholders and (ii) each person who acquires
Securities of the Company pursuant to the exercise of any option or right
granted under the Option Plan to sign an agreement that restricts such person
from selling, making any short sale of, granting any option for the purchase of,
or otherwise transferring or disposing of, any of such Securities, or any such
securities convertible into or exercisable or exchangeable for Securities, for a
period of 180 days after the date of the initial public offering of the Offered
Securities without the prior written consent of CSFBC; and the Company will (i)
enforce the terms of each such agreement and (ii) issue and impose a
stop-transfer instruction with the Company's transfer agent in order to enforce
the foregoing lock-up agreements.

            (k) The Company will (i) enforce the terms of each Lock-up
Agreement, and (ii) issue stop-transfer instructions to the transfer agent for
the Securities with respect to any transaction or contemplated transaction that
would constitute a breach of or default under the applicable Lock-up Agreement.
In addition, except with the prior written consent of CSFBC, the Company agrees
(i) not to amend or terminate, or waive any right under, any Lock-up Agreement,
or take any other action that would directly or indirectly have the same effect
as an amendment or termination, or waiver of any right under any Lock-up
Agreement, that would permit any holder of Securities, or any securities
convertible into, or exercisable or exchangeable for, Securities, to make any
short sale of, grant any option for the purchase of, or otherwise transfer or
dispose of, any such Securities or other securities, prior to the expiration of
the 180 days after the date of the initial public offering of the Offered
Securities and (ii) not to consent to any sale, short sale, grant of an option
for the purchase of, or other disposition or transfer of shares of Securities,
or securities convertible into or exercisable or exchangeable for Securities,
subject to a Lock-up Agreement

            (l) In connection with the Directed Share Program, the Company will
ensure that the Directed Shares will be restricted to the extent required by the
NASD or the NASD rules from sale, transfer, assignment, pledge or hypothecation
for a period of three months following the date of the effectiveness of the
Registration Statement. The Designated Underwriter will notify the Company as to
which Participants will need to be so restricted. The Company will direct the
transfer agent to place stop transfer restrictions upon such securities for such
period of time.

            (m) The Company will pay all fees and disbursements of counsel
incurred by the Underwriters in connection with the Directed Shares Program and
stamp duties, similar taxes or duties or other taxes, if any, incurred by the
underwriters in connection with the Directed Share Program.

            Furthermore, the Company covenants with the Underwriters that the
company will comply with all applicable securities and other applicable laws,
rules and regulations in each foreign jurisdiction in which the Directed Shares
are offered in connection with the Directed Share Program.

        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 herein, to the accuracy of the statements
of Company officers made pursuant to the provisions hereof, to the performance
by the Company of its obligations hereunder and to the following additional
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


                                       9
   10

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 Deloitte & Touche 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 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 Statement;

                (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) the unaudited consolidated net sales, net operating
income, net income and net income per share amounts for the three-month period
ended June 30, 2001 included in the Prospectus do not agree with the amounts
set forth in the unaudited consolidated financial statements for those same
periods or were not determined on a basis substantially consistent with that of
the corresponding amounts in the audited statements of income;

                    (C) 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 this Agreement, 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

                    (D) 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 consolidated net revenues, net operating income or in the
total or per share amounts of consolidated net income;

except in all cases set forth in clauses (C) and (D) 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 and other procedures
specified in


                                       10
   11

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) 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 the Company or the Representatives, shall be
contemplated by the Commission.

            (c) 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 of a majority in interest of the
Underwriters including the Representatives, 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 downgrading in the
rating of any debt securities or preferred stock of the Company by any
"nationally recognized statistical rating organization" (as defined for purposes
of Rule 436(g) under the Act), or any public announcement that any such
organization has under surveillance or review its rating of any debt securities
or preferred stock of the Company (other than an announcement with positive
implications of a possible upgrading, and no implication of a possible
downgrading, of such rating); (iii) 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; (iv) any banking moratorium declared by U.S. Federal or
New York authorities; or (v) 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 a majority in interest of the Underwriters including the
Representatives, 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.

            (d) The Representatives shall have received an opinion, dated such
Closing Date, of Orrick, Herrington & Sutcliffe, 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


                                       11
   12
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;

                (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;

                (iii) 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 file a registration statement under the Act with
respect to any securities of the Company owned or to be owned by such person or
to require the Company to include such securities in the securities registered
pursuant to the Registration Statement or in any securities being registered
pursuant to any other registration statement filed by the Company under the Act;

                (iv) 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.

                (v) 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;

                (vi) 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 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, 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;

                (vii) 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 counsel, 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, and each Registration Statement and the
Prospectus, and each amendment or supplement thereto, as of their respective
effective or issue 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 or as of such Closing 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 the Prospectus or any amendment or supplement thereto, as of
its issue date 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


                                       12
   13

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 as to the financial statements or other financial data
contained in the Registration Statements or the Prospectus; and

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

                (ix) The execution and delivery of the Merger Agreement,
effecting the reincorporation of the California Corporation under the laws of
the State of Delaware, was duly authorized by all necessary corporate action on
the part of each of the California Corporation and the Company.

            (e) The Representatives shall have received from Wilson Sonsini
Goodrich & Rosati, 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.

            (f) The Representatives shall have received a certificate, dated
such Closing Date, of the 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 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.

            (g) The Representatives shall have received a letter, dated such
Closing Date, of Deloitte & Touche 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.

            (h) On or prior to the date of this Agreement, the Representatives
shall have received lockup letters from each of the executive officers,
directors and holders of capital stock and securities exercisable for or
convertible into capital stock of the Company.

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


                                       13
   14

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 (b) below.

        The Company agrees to indemnify and hold harmless the Designated
Underwriter and each person, if any, who controls the Designated Underwriter
within the meaning of either Section 15 of the Securities Act or Section 20 of
the Exchange Act (the "DESIGNATED ENTITIES"), from and against any and all
losses, claims, damages and liabilities (including, without limitation, any
legal or other expenses reasonably incurred in connection with defending or
investigating any such action or claim) (i) caused by any untrue statement or
alleged untrue statement of a material fact contained in any material prepared
by or with the consent of the Company for distribution to Participants in
connection with the Directed Share Program or caused by any omission or alleged
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein not misleading; (ii) caused by the
failure of any Participant to pay for and accept delivery of Directed Shares
that the Participant agreed to purchase; or (iii) related to, arising out of, or
in connection with the Directed Share Program, other than losses, claims,
damages or liabilities (or expenses relating thereto) that are finally
judicially determined to have resulted from the bad faith or gross negligence of
the Designated Entities.

            (b) 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, against
any losses, claims, damages or liabilities to which the Company 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 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 the following information in the Prospectus furnished on behalf of each
Underwriter: the concession and reallowance figures appearing in the fourth
paragraph under the caption "Underwriting."

            (c) 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) or (b) 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) or (b) 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



                                       14
   15

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. Notwithstanding anything contained herein to
the contrary, if indemnity may be sought pursuant to the last paragraph in
Section 7(a) hereof in respect of such action or proceeding, then in addition
to such separate firm for the indemnified parties, the indemnifying party shall
be liable for the reasonable fees and expenses of not more than one separate
firm (in addition to any local counsel) for the Designated Underwriter for the
defense of any losses, claims, damages and liabilities arising out of the
Directed Share Program, and all persons, if any, who control the Designated
Underwriter within the meaning of either Section 15 of the Act or Section 20 of
the Exchange Act. No indemnifying party shall, without the prior written consent
of the indemnified party, effect any settlement of any pending or threatened
action in respect of which any indemnified party is or could have been a party
and indemnity could have been sought hereunder by such indemnified party unless
such settlement (i) includes an unconditional release of such indemnified party
from all liability on any claims that are the subject matter of such action and
(ii) does not include a statement as to, or an admission of, fault, culpability
or a failure to act by or on behalf of an indemnified party.

            (d) If the indemnification provided for in this Section is
unavailable or insufficient to hold harmless an indemnified party under
subsection (a) or (b) 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) or (b) above (i) in
such proportion as is appropriate to reflect the relative benefits received by
the Company 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 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 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 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 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 (d) 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 (d). Notwithstanding the provisions of this subsection (d), 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. 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 (d) to contribute are several in proportion to their respective
underwriting obligations and not joint.

            (e) The obligations of the Company under this Section shall be in
addition to any liability which the Company 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.


                                       15
   16

        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 of Offered Securities
that the Underwriters are obligated to purchase on such Closing Date, CSFBC may
make arrangements satisfactory to the Company 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 and the
Company 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 or the Company, 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
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, 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 shall remain responsible for the
expenses to be paid or reimbursed by it pursuant to Section 5 and the respective
obligations of the Company 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. If the purchase of the 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
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 or telegraphed and confirmed
to the Representatives, c/o Credit Suisse First Boston Corporation, Eleven
Madison Avenue, New York, N.Y. 10010-3629, Attention: Transactions Advisory
Group, or, if sent to the Company, will be mailed, delivered or telegraphed and
confirmed to it at 333 West San Carlos Street, Suite 700, San Jose, California
95110, Attention: John K. Kibarian; provided, however, that any notice to an
Underwriter pursuant to Section 7 will be mailed, delivered 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 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.


                                       16
   17

        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.


                                       17
   18

        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,

                                    PDF SOLUTIONS, INC.

                                    John K. Kibarian,
                                    President and Chief Executive Officer


                                    By _________________________________________


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

  CREDIT SUISSE FIRST BOSTON CORPORATION,
  ROBERTSON STEPHENS, INC.
  DAIN RAUSCHER INCORPORATED

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

    BY CREDIT SUISSE FIRST BOSTON CORPORATION


    By __________________________________________
               Managing Director


                                       18
   19

                                   SCHEDULE A





               UNDERWRITER                                       NUMBER OF
                                                              FIRM SECURITIES
                                                           
Credit Suisse First Boston Corporation....................
Robertson Stephens, Inc...................................
Dain Rauscher Incorporated................................








                                                                 ---------
                      Total...............................       4,500,000
                                                                 =========



                                       19