Document:

<PAGE>

                                                                       EXHIBIT B

                              AMENDMENT NO. 2 TO
                            STOCKHOLDERS AGREEMENT

     This Amendment No. 2 to Stockholders Agreement (the "Amendment") is made
and entered into as of February __, 2000, by and among Integrated Circuit
Systems, Inc., a Pennsylvania corporation (the "Company"), each of the Persons
listed on Schedule I attached hereto (the "Bain Stockholders"), each of the
          ----------
Persons listed on Schedule II attached hereto (the "Bear Stearns Stockholder"),
                  -----------
the Person listed on Schedule III hereto (the "First Boston Stockholder") and
                     ------------
the Person listed on Schedule IV hereto (the "Intel Stockholder").
                     -----------

                                   RECITALS

     A.   The Company entered into a Confidentiality Agreement with Intel
Corporation on December 29, 1999 (the "Confidentiality Agreement") in connection
with the Series A Cumulative Convertible Preferred Stock Purchase Agreement
dated December 23, 1999 between the Company and Intel Corporation (the "Purchase
Agreement"). Under Section 1.6 of the Confidentiality Agreement, the Company is
required to use its reasonable best efforts to amend the Stockholders Agreement
dated as of May 11, 1999 by and among the Bain Stockholders, the Bear Stearns
Stockholders, the First Boston Stockholder, the Intel Stockholder and the
Company, as amended by Amendment No. 1 dated December 29, 1999 (as amended, the
"Stockholders Agreement"), to include the terms and provisions of the
Confidentiality Agreement.

     B.   Terms not otherwise defined in this Amendment have the meanings given
to them in the Stockholders Agreement.

                                   AGREEMENT

     The parties hereto, intending to be legally bound, hereby agree as follows:

     1.   This Amendment constitutes an amendment to the Stockholders Agreement.
          Except as specifically amended pursuant to the terms of this
          Amendment, all of the terms of the Stockholders Agreement shall
          continue in full force and effect.

     2.   Section 29 is hereby added to the Stockholders Agreement to read in
          full as follows:

               The Stockholders hereby agree to comply with
               the terms and provisions of the
               Confidentiality Agreement dated December 29,
               1999 by and between the Company and Intel
               Corporation (a copy of which is attached
               hereto and marked as Exhibit A) that are
                                    ---------
               applicable to the Company to the same extent
               that the Company is bound thereby.

     3.   Miscellaneous.

          (a)  Entire Agreement. Except as otherwise expressly set forth herein,
               ----------------
               this Amendment embodies the complete agreement and understanding
               among the parties hereto with respect to the subject matter
               hereof and supersedes
<PAGE>

               and preempts any prior understandings, agreements or
               representations by or among the parties, written or oral, which
               may have related to the subject matter hereof in any way.

          (b)  Successors and Assigns. Except as otherwise provided herein, this
               ----------------------
               Amendment shall bind and inure to the benefit of and be
               enforceable by the Company and its successors and assigns and the
               Stockholders and any subsequent holders of Stockholder Shares and
               the respective successors and assigns of each of them, so long as
               they hold Stockholder Shares.

          (c)  Counterparts. This Amendment may be executed in multiple
               ------------
               counterparts, each of which shall be an original and all of which
               taken together shall constitute one and the same agreement.

          (d)  Governing Law.  The corporate law of the Commonwealth of
               -------------
               Pennsylvania shall govern all issues and questions concerning the
               relative rights of the Company and its stockholders. All other
               issues and questions concerning the construction, validity,
               interpretation and enforceability of this Amendment and the
               exhibits and schedules hereto shall be governed by, and construed
               in accordance with, the laws of the Commonwealth of Pennsylvania,
               without giving effect to any choice of law or conflict of law
               rules or provisions (whether of the Commonwealth of Pennsylvania
               or any other jurisdiction) that would cause the application of
               the laws of any jurisdiction other than the Commonwealth of
               Pennsylvania.

                                      -2-
<PAGE>

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

                              INTEGRATED CIRCUIT SYSTEMS, INC.

                              By:___________________________________
                              Name: Hock E. Tan
                              Its:  President and Chief Executive Officer

                                      -3-
<PAGE>

BAIN STOCKHOLDERS:
-----------------

BAIN CAPITAL FUND VI, L.P.                    BCIP ASSOCIATES II-C

By:  Bain Capital Partners VI, L.P.           By: /s/ Michael Krupka
Its: General Partner                             -----------------------
                                              Name: Michael Krupka
By:  Bain Capital Investors VI, Inc.          Its:  Managing Director
Its: General Partner

By: /s/ Michael Krupka
   -----------------------
Name: Michael Krupka
Its:  Managing Director                       PEP INVESTMENTS PTY LTD.

BCIP TRUST ASSOCIATES II                      By: /s/ Michael Krupka
                                                 -----------------------
                                              Name: Michael Krupka
By: /s/ Michael Krupka                        Its:  Managing Director
   -----------------------
Name: Michael Krupka
Its:  Managing Director                       RANDOLPH STREET PARTNERS II

BCIP TRUST ASSOCIATES II-B                    By:_____________________________
                                              Name:
                                              Its:
By: /s/ Michael Krupka
   -----------------------
Name: Michael Krupka                          RANDOLPH STREET PARTNERS 1998
Its:  Managing Director                       DIF, L.L.C.

BCIP ASSOCIATES II                            By:_____________________________
                                              Name:
                                              Its:
By:
Name: Michael Krupka
Its:  Managing Director

BCIP ASSOCIATES II-B

By: /s/ Michael Krupka
   -----------------------
Name: Michael Krupka
Its:  Managing Director

                                      -4-
<PAGE>

     BEAR STEARNS STOCKHOLDER:
     ------------------------

     ICST ACQUISITION CORP.

     By: /s/ Bodil Arlander
        -------------------
     Name: Bodil Arlander
     Its:  Vice President

                                      -5-
<PAGE>

     FIRST BOSTON STOCKHOLDER:
     ------------------------

     INTEGRATED CIRCUIT SYSTEMS
     EQUITY INVESTORS, L.L.C.

     By:_________________________________
     Name:
     Its:
<PAGE>

     INTEL STOCKHOLDER:
     -----------------

     INTEL CORPORATION

     By: /s/ Arvind Sodhni
        ---------------------------------
     Name: Arvind Sodhni
     Its:  Vice President and Treasurer

<PAGE>

                                  SCHEDULE I
                                  ----------

                               Bain Stockholders
                               -----------------

     Bain Capital Fund VI, L.P.
     BCIP Associates II
     BCIP Trust Associates II
     BCIP Associates II-B
     BCIP Trust Associates II-B
     BCIP Associates II-C
     PEP Investments PTY Ltd.
     Randolph Street Partners II
     Randolph Street Partners 1998 DIF, L.L.C.

<PAGE>

                                  SCHEDULE II
                                  -----------

                           Bear Stearns Stockholder
                           ------------------------

     ICST Acquisition Corp.
<PAGE>

                                 SCHEDULE III
                                 ------------

                           First Boston Stockholder
                           ------------------------

     Integrated Circuit Systems Equity Investors, L.L.C.
<PAGE>

                                  SCHEDULE IV
                                  -----------

                               Intel Stockholder
                               -----------------

Intel Corporation
<PAGE>

                                   EXHIBIT A
                                   ---------

             [Confidentiality Agreement entered into with Intel]<PAGE>

                                                                       EXHIBIT C

                   AMENDMENT NO. 1 TO REGISTRATION AGREEMENT
                   -----------------------------------------

          THIS AMENDMENT NO. 1 TO REGISTRATION AGREEMENT ("Amendment No. 1") is
                                                           ---------------
made and entered into as of December 29, 1999, by and among Integrated Circuit
Systems, Inc., a Pennsylvania corporation (the "Company"), each of the Persons
                                                -------
listed on Schedule I attached hereto (the "Bain Stockholders"), each of the
                                           -----------------
Persons listed on Schedule II attached hereto (the "Bear Stearns Stockholders")
                                                    -------------------------
and each of the Persons listed on Schedule V attached hereto (the "Intel
                                                                   -----
Stockholders").
------------

          All of the Stockholders other than the Intel Stockholder are parties
to that certain Registration Agreement dated as of May 11, 1999 (the "Original
                                                                      --------
Agreement").  Pursuant to a Series A Cumulative Convertible Preferred Stock
---------
Purchase Agreement dated December 23, 1999 between the Company and Intel
Corporation (the Purchase Agreement"), the Company has agreed to sell to Intel
                 ------------------
Corporation, and Intel Corporation has agreed to purchase from the Company,
certain shares of the Company's Series A Cumulative Convertible Preferred Stock
(the "Preferred Stock").  Pursuant to the Purchase Agreement, the Company has
      ---------------
agreed to provide certain registration rights to the Intel Stockholders, as more
particularly set forth in this Amendment.

          The parties hereto, intending to be legally bound, hereby agree as
follows:

          1.  Amendment to Original Agreement.  This Amendment constitutes an
              -------------------------------
amendment to the Original Agreement.  The Original Agreement, as amended by this
Amendment, is herein referred to as the "Agreement."  Except as specifically
amended pursuant to the terms of this Amendment, all of the terms of the
Original Agreement shall continue in full force and effect.  Unless otherwise
provided in this Agreement, capitalized terms used herein shall have the
meanings set forth in paragraph 9 of the Agreement.

          2.  Demand Registrations.  Paragraphs (a), (b), (c) and (g) of Section
              --------------------
1 of the Original Agreement are hereby amended to read in full as follows:

              1.  Demand Registrations.

                  (a) Requests for Registration. At any time after the date
                      -------------------------
              hereof and prior to an IPO, the holders of a majority of the Class
              A Common (excluding any shares of Class A Common issued upon
              conversion of Preferred Stock) may request, and at any time after
              an IPO, subject to the limitations set forth in Section 1(b) and
              1(c) hereof, the holders of a majority of the Bain Registrable
              Securities, the holders of a majority of the Intel Registrable
              Securities or the holders of a majority of Bear Stearns
              Registrable Securities may request a registration (a "Demand")
                                                                    ------
              under the Securities Act of all or part of their Registrable
              Securities on Form S-1 or any similar long-form registration
              ("Long-Form Registrations") or, if available, on
                -----------------------
<PAGE>

              Form S-2 or S-3 (including pursuant to Rule 415 under the
              Securities Act) or any similar short-form registration ("Short-
                                                                       -------
              Form Registrations"). Each Demand shall specify the approximate
              ------------------
              number of Registrable Securities requested to be registered and
              the anticipated per share price range for such offering. Within
              ten (10) days after receipt of any Demand, the Company will give
              written notice of such requested registration to all other holders
              of Registrable Securities and, subject to paragraph 1(d) below,
              will include in such registration all Registrable Securities with
              respect to which the Company has received written requests for
              inclusion therein within fifteen (15) days after the receipt of
              the Company's notice. All registrations requested pursuant to this
              paragraph 1(a) are referred to herein as "Demand Registrations."
                                                        --------------------

                  (b) Long-Form Registrations. The holders of a majority of the
                      -----------------------
              Bain Registrable Securities will be entitled to request (i) three
              Long-Form Registrations in which the Company will pay all
              Registration Expenses and (ii) any other number of Long-Form
              Registrations in which Registration Expenses will be paid in
              accordance with Section 5(c) hereof. Each of the following groups
                              ------------
              will be entitled to request one Long-Form Registration in which
              the Company will pay all Registration Expenses: (i) the holders of
              a majority of the Intel Registrable Securities and (ii) the
              holders of a majority of the Bear Stearns Registrable Securities.
              A registration shall not count as one of the permitted Long-Form
              Registrations until it has become effective and the holders of
              Registrable Securities initially requesting the Long-Form
              Registration are able to register and sell at least 95% of the
              Registrable Securities requested to be included in such
              registration by such holders; provided that in any event the
                                            --------
              Company will pay all Registration Expenses in connection with any
              registration initiated as a Long-Form Registration whether or not
              it has become effective and whether or not such registration has
              counted as one of the permitted Long-Form Registrations. Long-Form
              Registrations may be underwritten or non-underwritten
              registrations.

                  (c) Short-Form Registrations.  In addition to the Long-Form
                      ------------------------
              Registrations provided pursuant to Section 1(b): (i) holders of a
                                                 ------------
              majority of Bain Registrable Securities will be entitled to
              request unlimited Short-Form Registrations in which the Company
              will pay all Registration Expenses; and (ii) each of the following
              groups will be entitled to request three Short-Form

                                      -2-
<PAGE>

              Registrations (to be filed no more frequently than one in any six-
              month period) in which the Company will pay all Registration
              Expenses: (1) the holders of a majority of Intel Registrable
              Securities and (2) the holders of a majority of the Bear Stearns
              Registrable Securities. Notwithstanding anything contained herein
              to the contrary, Demand Registrations will be Short-Form
              Registrations whenever the Company is permitted to use any
              applicable short form. After the Company has become subject to the
              reporting requirements of the Securities Exchange Act, the Company
              will use its best efforts to make Short-Form Registrations
              available for the sale of Registrable Securities.

                  (d) Priority on Demand Registrations. The Company will not
                      --------------------------------
              include in any Demand Registration any securities which are not
              Registrable Securities without the prior written consent of the
              holders of a majority of the Bain Registrable Securities or, in
              the case where the holders of Intel Registrable Securities or Bear
              Stearns Registrable Securities have made a Demand pursuant to
              Section 1, the holders of a majority of Intel Registrable
              Securities or Bear Stearns Registrable Securities, respectively.
              If a Demand Registration is an underwritten offering and the
              managing underwriters advise the Company in writing (with a copy
              to each party hereto requesting registration of Registrable
              Securities) that in their opinion the number of Registrable
              Securities and, if permitted hereunder, other securities requested
              to be included in such offering exceeds the number of Registrable
              Securities and other securities, if any, which can be sold therein
              without adversely affecting the marketability of the offering, the
              Company will include in such registration prior to the inclusion
              of any securities which are not Registrable Securities: (i)
              subject to the proviso set forth below, not less than 20% of the
              securities requested to be registered by the holders requesting
              such Demand Registration, (ii) the number of Registrable
              Securities requested to be included which in the opinion of such
              underwriters can be sold without adversely affecting the
              marketability of the offering, (1) subject to the proviso set
              forth below, first pro rata among the respective holders
              requesting such Demand Registration under Section 1(a), and then
              (2) to the extent that any additional Registrable Securities can
              still be included, pro rata among the respective holders of the
              remaining Registrable Securities on the basis of the amount of
              Registrable Securities owned by each such holder and then (3) to
              the extent that any securities which are not Registrable
              Securities can still be

                                      -3-
<PAGE>

              included, pro rata among the respective holders thereof on the
              basis of the amount of such securities owned by each such holder;
              provided, however, that the priorities set forth in clauses (i)
              and (ii)(1) set forth above shall not apply if holders of
              Registrable Securities making the Demand have registered any
              Registrable Securities in the six months preceding the date of the
              Demand. Any Persons other than holders of Registrable Securities
              who participate in Demand Registrations which are not at the
              Company's expense, if any, must pay their share of the
              Registration Expenses as provided in Section 5 hereof.
                                                   ---------

                                   * * * * *

                  (g) Selection of Underwriters. The holders of a majority of
                      -------------------------
              the Bain Registrable Securities or, in the case where the holders
              of Intel Registrable Securities have requested the Demand
              Registration pursuant to Section 1, the holders of a majority of
              Intel Registrable Securities, or, in the case where the holders of
              Bear Stearns Registrable Securities have requested the Demand
              Registration pursuant to Section 1, the holders of a majority of
              Bear Stearns Registrable Securities, will have the right to select
              the investment banker(s) and manager(s) to administer the
              offering."

          3.  Restrictions on Demand Registrations.  Paragraph (e) of Section 1
              ------------------------------------
of the Original Agreement is hereby amended by replacing the words "six months"
in the second sentence thereof with the words "90 days" and by adding the
following to the end of the first sentence thereof: "provided, further that the
                                                     --------  -------
Company may postpone the filing or effectiveness of a registration statement in
accordance with this Section 3 no more than 90 days in any 12-month period."

          4.  Holdback Agreements.  Paragraph (a) of Section 3 of the Original
              -------------------
Agreement is hereby amended to read in full as follows:

              "3.  Holdback Agreements.

                   (a) Notwithstanding anything else in this Agreement to the
              contrary (but subject to the proviso in the last sentence of this
              paragraph 3(a)), to the extent not inconsistent with applicable
              law, each holder of Registrable Securities agrees not to effect
              any public sale or distribution (including sales pursuant to Rule
              144) of equity securities of the Company, or any securities,
              options or rights convertible into or exchangeable or exercisable
              for such securities during the period (the "LockUp Period") that
                                                          -------------
              is agreed to with respect to such holder by the

                                      -4-
<PAGE>

              underwriter managing the registered public offering and the
              Company, with the consent of the holders of a majority of the Bain
              Registrable Securities (in the case of a Piggyback Registration)
              or the underwriter managing the registered public offering and the
              holders of a majority of the Bain Registrable Securities included
              in such registration (in the case of a Demand Registration);
              provided that the LockUp Period shall not be more restrictive upon
              the holders of Intel Registrable Securities or Bear Stearns
              Registrable Securities than upon the holders of Bain Registrable
              Securities. The LockUp Period may include a period before and a
              period after the effective date of any (i) underwritten Demand
              Registration (except as part of such underwritten registration),
              or (ii) underwritten Piggyback Registration (except as part of
              such underwritten registration or pursuant to registrations of
              Form S-4 or Form S-8 or any successor form); provided that the
              portion of the LockUp Period following the effective date of any
              registration shall in no event exceed the 180-day period following
              such effective date; and further provided that with respect to any
              holders of Intel Registrable Securities or Bear Stearns
              Registrable Securities, after a Qualified Initial Public Offering
              has taken place, the holders of Intel Registrable Securities and
              Bear Stearns Registrable Securities shall be subject to a LockUp
              Period with respect to such Intel Registrable Securities and Bear
              Stearns Registrable Securities only if: (x) such holders offer
              securities in the registration that is the subject of such LockUp
              Period, (y) officers and directors of the Company enter into
              holdback agreements providing for restrictions during the LockUp
              Period that are no less restrictive than those that are applicable
              to such holders, and (z) the portion of the LockUp Period
              following the effective date of such registration does not exceed
              the 90-day period following such effective date."

          5.  Definitions.  Section 9 of the Original Agreement is hereby
              -----------
amended by amending the defined terms in the Agreement that are set forth below
and by adding definitions for the terms "Intel Registrable Securities" and
"Qualified Initial Public Offering," as follows:

                    "Group" means each of the Bain Stockholders, the Bear
                     -----
              Stearns Stockholders, the Executive Stockholders, the Intel
              Stockholders and the holders of Other Registrable Securities.

                    "Intel Registrable Securities" means (i) any shares of
                     ----------------------------
              Common Stock issuable upon conversion of Preferred Stock; and (ii)
              any shares of Common Stock issued or

                                      -5-
<PAGE>

              issuable directly or indirectly with respect to the securities
              referred to in clause (i) by way of stock dividend or stock split
              or in connection with a combination of shares, recapitalization,
              merger, consolidation or other reorganization, including a
              recapitalization or exchange; provided that in the event that
                                            --------
              pursuant to such recapitalization or exchange, Non-Participating
              Securities are issued, such Non-Participating Securities will not
              be Registrable Securities.

                    "IPO" means the initial sale of Common Stock to the public
                     ---
              pursuant to an underwritten offering registered under the
              Securities Act.

                    "Qualified Initial Public Offering" shall have the meaning
                     ---------------------------------
              given in the Stockholders Agreement.

                    "Other Registrable Securities" means any shares of Common
                     ----------------------------
               Stock held by Other Stockholders or other Persons that are a
               party to this Agreement that are of the same class and type as
               Bain Registrable Securities but that do not constitute Bain
               Registrable Securities, Bear Stearns Registrable Securities,
               Intel Registrable Securities or Executive Stockholder Registrable
               Securities.

                    "Preferred Stock" means any capital stock of the Company
                     ---------------
               having a preference over the Common Stock as to dividends or
               assets or both and that is convertible into Common Stock.

                    "Registrable Securities" means collectively the Bain
                     ----------------------
               Registrable Securities, Bear Stearns Registrable Securities,
               Intel Registrable Securities, Executive Stockholder Registrable
               Securities and Other Registrable Securities. For purposes of this
               Agreement, a Person will be deemed to be a holder of Registrable
               Securities whenever such Person has the right to acquire such
               Registrable Securities (upon conversion or exercise in connection
               with a transfer of securities or otherwise, but disregarding any
               restrictions or limitations upon the exercise of such right),
               whether or not such acquisition has actually been effected, and,
               except as set forth in the definition of "Executive Stockholder
               Registrable Securities", such Person shall be entitled to
               exercise the rights of a holder of Registrable Securities
               hereunder. As to any particular shares constituting Registrable
               Securities, such shares will cease to be Registrable Securities
               when they have been (x) effectively registered under the
               Securities Act and disposed of in

                                      -6-
<PAGE>

               accordance with the registration statement covering them, or (y)
               sold to the public through a broker, dealer or market maker
               pursuant to Rule 144 (or by similar provision then in force)
               under the Securities Act.

All other defined terms set forth in Section 9 of the Original Agreement that
are not amended as set forth in this Section 5 shall remain in full force and
effect.

          6.  Miscellaneous.

              (a)   The provisions of paragraphs (d), (f), (g), (h), (i) and (j)
of Section 10 of the Original Agreement are incorporated by reference herein as
if set forth in full in this Amendment.

              (b)   Paragraph (e) of Section 10 of the Original Agreement is
hereby amended to read in full as follows:

                    "(e) Additional Parties. The Board of Directors of the
                         ------------------
     Company shall be entitled, but not obligated, with the consent of Person(s)
     holding at least a majority of the Bain Registrable Securities, to allow
     any purchaser of equity securities (or securities or rights convertible or
     exercisable into equity securities), of the same type and class of the
     Registrable Securities, to execute a counterpart to this Agreement and
     become a party hereto (each, an "Additional Party"), in which case the
                                      ----------------
     equity securities issued or issuable to any such Additional Party shall be
     deemed a holder of "Executive Stockholder Registrable Securities," "Bain
     Registrable Securities", "Bear Stearns Registrable Securities," "Intel
     Registrable Securities" or "Other Registrable Securities," as the case may
     be, in accordance with the definitions thereof; provided, however, that if
                                                     --------  -------
     allowing such Person to become an Additional Party shall adversely affect
     any Group in a manner adversely different than any other Group, no such
     Person shall become an Additional Party without the prior written consent
     of such Group adversely affected thereby (with it being understood that if
     the admission of an Additional Party is adversely different to the holders
     of Bear Stearns Registrable Securities or otherwise reduces or diminishes
     any rights applicable to the holders of Bear Stearns Registrable Securities
     without reducing or diminishing the same rights applicable to the holders
     of Bain Registrable Securities in the same manner, such admission shall
     require the consent of the holders of a majority of the Bear Stearns
     Registrable Securities). Except as set forth in this Section 10(e), the
     Company will not grant to any other Persons any registration rights."

                                      -7-
<PAGE>

              (c) The obligations of the parties hereto with respect to Intel
Registrable Securities, and any rights of the holders of Intel Registrable
Securities set forth herein, shall expire, to the extent not earlier terminated
or expired, on the seventh anniversary of the first issuance of a share of
Preferred Stock.

              (d) Paragraph (c) of Section 2 of the Original Agreement is hereby
amended by replacing the word "os" in the last sentence thereof with the word
"of."

                                      -8-
<PAGE>

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

                                    INTEGRATED CIRCUIT SYSTEMS, INC.

                                    By: /S/ HOCK E. TAN
                                       ---------------------------------------
                                    Name: Hock E. Tan
                                    Its:  President and Chief Executive Officer

                                    INTEL CORPORATION

                                    By: /S/ Arvind Sodhni
                                       ---------------------------------------
                                    Name: Arvind Sodhni
                                    Its:  Vice President and Teasurer

                                      -9-
<PAGE>

BAIN STOCKHOLDERS:
--------------------

BAIN CAPITAL FUND VI, L.P.                  BCIP ASSOCIATES II-B

By:  Bain Capital Partners VI, L.P.         By:/S/ MICHAEL KRUPKA
Its: General Partner                        ----------------------------------
                                            Name:  Michael Krupka
                                            Its:   Managing Director
By:  Bain Capital Investors VI, Inc.
Its: General Partner

By: /S/ MICHAEL KRUPKA                       BCIP ASSOCIATES II-C
    ---------------------------------
Name:  Michael Krupka
Its:   Managing Director
                                            By: /S/ MICHAEL KRUPKA
                                                -------------------------------
                                            Name:  Michael Krupka
BCIP TRUST ASSOCIATES II                    Its:   Managing Director

By: /S/ MICHAEL KRUPKA                      PEP INVESTMENTS PTY LTD.
    ---------------------------------
Name:  Michael Krupka
Its:   Managing Director
                                            By: /S/ MICHAEL KRUPKA
                                                --------------------------------
                                            Name:  Michael Krupka
BCIP TRUST ASSOCIATES II-B                  Its:   Managing Director

By: /S/ MICHAEL KRUPKA                      RANDOLPH STREET PARTNERS II
    ---------------------------------
Name:  Michael Krupka
Its:   Managing Director
                                            By:________________________________
                                            Name:
BCIP ASSOCIATES II                          Its:

By: /S/ MICHAEL KRUPKA                      RANDOLPH STREET PARTNERS 1998
    ---------------------------------
Name:  Michael Krupka                       DIF, L.L.C.
Its:   Managing Director
                                            By:_______________________________
                                            Name:
                                            Its:

                                      -10-
<PAGE>

                                             BEAR STEARNS STOCKHOLDERS:
                                             -------------------------

                                             ICST ACQUISITION CORP.

                                             By: /S/ Bodil Arlander
                                                 ------------------------------
                                             Name:  Bodil Arlander
                                             Its:   Vice President

                                      -11-
<PAGE>

                                   Schedule I
                                   ----------

                          Bain Capital Fund VI, L.P.

                           BCIP Trust Associates II

                          BCIP Trust Associates II-B

                              BCIP Associates II

                             BCIP Associates II-B

                             BCIP Associates II-C

                           PEP Investments PTY Ltd.

                          Randolph Street Partners II

                   Randolph Street Partners 1998 DIF, L.L.C.

                                      -12-
<PAGE>

                                  Schedule II
                                  -----------

                             ICST Acquisition Corp.

                                      -13-
<PAGE>

                                   Schedule V
                                   ----------

                               Intel Corporation

                                      -14-

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