EXHIBIT 10.3


                                     FORM OF
                               AFFILIATE AGREEMENT


     This Affiliate Agreement (this "AGREEMENT") is made and entered into as 
of May 28, 1996, between C-Cube Microsystems Inc., a Delaware corporation 
("C-CUBE"), DiviCom Inc., a Delaware corporation ("DIVICOM"), and the 
undersigned affiliate ("STOCKHOLDER") of DiviCom.

                                    RECITALS

     A.   Concurrently with the execution of this Agreement, C-Cube and 
DiviCom have entered into an Agreement and Plan of Reorganization (the 
"REORGANIZATION AGREEMENT") which provides, among other things, for the 
merger (the "MERGER") of DiviCom with and into C-Cube Acquisition Corp.,  a 
Delaware corporation and a wholly-owned subsidiary of C-Cube ("MERGER SUB").  
Pursuant to the Merger, all outstanding capital stock of DiviCom will be 
canceled and extinguished and be converted automatically into the right to 
receive shares of C-Cube Common Stock pursuant to the Reorganization 
Agreement.

     B.   The Stockholder is the beneficial owner (as defined in Rule 13d-3 
under the Securities Exchange Act of 1934, as amended (the "EXCHANGE ACT")) 
of such number of shares of the outstanding capital stock of DiviCom as is 
indicated on the final page of this Agreement (the "SHARES").

     NOW THEREFORE, the parties agree as follows:

     1.   TAX TREATMENT:  RULE 145.  Stockholder understands and agrees that 
it is intended that the Merger will be treated as a "reorganization" for 
federal income tax purposes.  Stockholder further understands and agrees that 
Stockholder may be deemed to be an "affiliate" of DiviCom within the meaning 
of Rule 145 ("RULE 145") promulgated by the Securities and Exchange 
Commission (the "SEC") under the Securities Act of 1933, as amended (the 
"SECURITIES ACT"), although nothing contained herein should be construed as 
an admission of such fact.

     2.   RELIANCE UPON REPRESENTATIONS, WARRANTIES AND COVENANTS.  
Stockholder has been informed that the treatment of the Merger as a 
reorganization for federal income tax purposes requires that former 
stockholders of DiviCom maintain a meaningful continuing equity ownership 
interest in C-Cube after the Merger.  Stockholder understands that the 
representations, warranties and covenants of Stockholder set forth herein 
will be relied upon by C-Cube, DiviCom and their respective counsel.


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     3.   REPRESENTATIONS, WARRANTIES AND COVENANTS OF STOCKHOLDER.  
Stockholder represents, warrants and covenants as follows:

          (a)  Stockholder has full power and authority to execute this 
Agreement, to make the representations, warranties and covenants herein 
contained and to perform Stockholder's obligations hereunder.

          (b)  Set forth below the signatures below is the number of Shares 
owned by Stockholder, including all Shares as to which Stockholder has sole 
or shared voting or investment power and all rights, options and warrants to 
acquire DiviCom Capital Stock owned or held by Stockholder.

          (c)  The shares of C-Cube Common Stock issued to Stockholder as 
consideration in the Merger, and any C-Cube securities issued in exchange 
therefor, are hereinafter referred to as "Restricted Securities".  The 
Stockholder agrees, in addition to the limitations set forth in Section 3(d), 
that as to a portion of the Restricted Securities representing two-thirds of 
all Restricted Securities acquired by Stockholder less the amount contained 
in the Escrow Fund pursuant to the Reorganization Agreement in respect of 
Stockholder, Stockholder will not, for a period of 270 days from the date of 
this Agreement, sell, transfer, exchange, pledge (except in connection with a 
bona fide loan transaction), make charitable contributions in respect of, or 
otherwise dispose of such portion of the Restricted Securities (or any 
option, right or other interest with respect thereto).

          (d)  Notwithstanding the foregoing, Stockholder will not sell, 
transfer, exchange, pledge (except in connection with a bona fide loan 
transaction) or make charitable contributions in respect of, or otherwise 
dispose of any Restricted Securities (or any interest with respect thereto), 
unless: (i) such transaction is permitted pursuant to Rule 145(c) and 145(d) 
under the Securities Act; or (ii) counsel representing Stockholder, which 
counsel is reasonably satisfactory to C-Cube, shall have advised C-Cube in a 
written opinion letter reasonably satisfactory to C-Cube and C-Cube's legal 
counsel, and upon which C-Cube and its legal counsel may rely, that no 
registration under the Securities Act would be required in connection with 
such transaction; or (iii) a registration statement under the Securities Act 
covering the Restricted Securities (or interests with respect thereto) 
proposed to be disposed of, describing the manner and terms of the proposed 
disposition, and containing a current prospectus, shall have been filed with 
the SEC and made effective under the Securities Act; or (iv) an authorized 
representative of the SEC shall have rendered written advice to Stockholder 
(sought by Stockholder or counsel to Stockholder, with a copy thereof and all 
other related communications delivered to C-Cube) to the effect that the SEC 
would take no action, or that the staff of the SEC would not recommend that 
the SEC take any action, with respect to the proposed disposition if 
consummated.

          (e)  Stockholder has no present plan or intent to sell, transfer, 
exchange, pledge (other than in a preexisting bona fide margin account) or 
otherwise dispose of, including a distribution by a corporation to its 
stockholders (but excluding transactions among family members for tax or 
estate planning purposes or among corporate affiliates, and transfers 
occurring by operation of law or 


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pursuant to court order) any of the shares of C-Cube Common Stock that 
Stockholder may acquire in connection with the Merger.  If any of 
Stockholder's representations in this subsection (e) cease to be true at any 
time prior to the Effective Time of the Merger, Stockholder will deliver to 
each of DiviCom and C-Cube, prior to the Effective Time of the Merger, a 
written statement to that effect, signed by Stockholder.

     4.   RULES 144 AND 145.  From and after the Effective Time of the Merger 
and for so long as is necessary in order to permit Stockholder to sell the 
C-Cube Common Stock held by Stockholder pursuant to Rule 145 and, to the 
extent applicable, Rule 144 under the Securities Act, C-Cube will use its 
best efforts to file on a timely basis all reports required to be filed by it 
pursuant to Section 13 of the Securities Exchange Act of 1934, as amended, 
referred to in paragraph (c)(1) of Rule 144 under the Securities Act.

     5.   LIMITED RESALES.  Stockholder understands that, in addition to the 
restrictions imposed under Section 4, the provisions of Rule 145 limit 
Stockholder's public resales of Restricted Securities, in the manner set 
forth in subsections (a), (b) and (c) below:

          (a)  Unless and until the restriction "Cut-off" provisions of Rule 
145(d)(2) or Rule 145(d)(3) set forth below become available, public resales 
of Restricted Securities may only be made by Stockholder in compliance with 
the requirements of Rule 145(d)(1).  Rule 145(d)(1) permits such resales 
only:  (i) while C-Cube meets the public information requirements of Rule 
144(c); (ii) in broker's transactions or in transactions with a market maker; 
and (iii) where the aggregate number of Restricted Securities sold at any 
time together with all sales of restricted C-Cube Common Stock sold for 
Stockholder's account during the preceding three (3) month period does not 
exceed the greater of (A) one percent (1%) of the C-Cube Common Stock 
outstanding or (B) the average weekly volume of trading in C-Cube Common 
Stock on all national securities exchanges, or reported through the automated 
quotation system of a registered securities association, during the four (4) 
calendar weeks preceding the date of receipt of the order to execute the sale.

          (b)  Stockholder may make unrestricted sales of Restricted 
Securities pursuant to Rule 145(d)(2) if: (i) Stockholder has beneficially 
owned (within the meaning of Rule 144(d) under the Securities Act) the 
Restricted Securities for at least two (2) years after the Effective Time of 
the Merger; (ii) Stockholder is not an affiliate of C-Cube; and (iii)  C-Cube 
meets the public information requirements of Rule 144(c).

          (c)  Stockholder may make unrestricted resales of Restricted 
Securities pursuant to Rule 145(d)(3) if Stockholder has beneficially owned 
(within the meaning of Rule 144(d) under the Securities Act) the Restricted 
Securities for at least three (3) years and is not, and has not been for at 
least three (3) months, an affiliate of C-Cube.

          (d)  C-Cube acknowledges that the provisions of Section 5(c) will 
be satisfied as to any sale by the undersigned of the Restricted Securities 
pursuant to Rule 145(d), by a broker's letter and a letter from the 
undersigned with respect to that sale stating that each of the 
above-described 


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requirements of Rule 145(d)(1) has been met or is inapplicable by virtue of 
Rule 145(d)(2) or Rule 145(d)(3); PROVIDED, HOWEVER, that C-Cube has no 
reasonable basis to believe that such sales were not made in compliance with 
such provisions of Rule 145(d).

     6.   LEGENDS.  Stockholder also understands and agrees that stop 
transfer instructions will be given to C-Cube's transfer agent with respect 
to certificates evidencing the Restricted Securities and that there will be 
placed on the certificate evidencing the Restricted Securities legends 
stating in substance:

          "THE SHARES REPRESENTED BY THIS CERTIFICATE MAY NOT BE OFFERED, SOLD,
          PLEDGED, EXCHANGED, TRANSFERRED OR OTHERWISE DISPOSED OF EXCEPT IN
          ACCORDANCE WITH THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, AS
          AMENDED, AND THE OTHER CONDITIONS SPECIFIED IN THAT CERTAIN AFFILIATE
          AGREEMENT DATED AS OF MAY __, 1996, AMONG C-CUBE MIRCROSYSTEMS INC.,
          DIVICOM INC.  AND THE PERSON OR ENTITY NAMED THEREIN.  A COPY OF SUCH
          AFFILIATE AGREEMENT MAY BE INSPECTED BY THE HOLDER OF THIS CERTIFICATE
          AT THE OFFICES OF C-CUBE MICROSYSTEMS INC., OR C-CUBE MICROSYSTEMS
          INC. WILL FURNISH, WITHOUT CHARGE, A COPY THEREOF TO THE HOLDER OF
          THIS CERTIFICATE UPON WRITTEN REQUEST THEREFOR."

C-Cube agrees to remove promptly such stop transfer instructions and legend 
upon full compliance with this Agreement by the undersigned, including, 
without limitation, a sale or transfer of C-Cube Common Stock permitted under 
Section 3.

     7.   TERMINATION.  This Agreement shall be terminated and shall be of no 
further force and effect upon the termination of the Reorganization Agreement 
pursuant to Article VIII of the Reorganization Agreement.

     8.   COUNTERPARTS.  This Agreement shall be executed in one or more 
counterparts, each of which shall be deemed an original, and all of which 
together shall constitute one and the same instrument.

     9.   BINDING AGREEMENT.  This Agreement will inure to the benefit of and 
be binding upon and enforceable against the parties and their successors and 
assigns, including administrators, executors, representatives, heirs, 
legatees and devisees of Stockholder and pledgees holding Restricted 
Securities as collateral.

     10.  WAIVER.  No waiver by any party hereto of any condition or of any 
breach of any provision of this Agreement shall be effective unless in 
writing and signed by each party hereto.

     11.  GOVERNING LAW.  This Agreement shall be governed by and construed, 
interpreted and 


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enforced in accordance with the internal laws of the State of Delaware.

     12.  ATTORNEYS' FEES.  In the event of any legal actions or proceeding 
to enforce of interpret the provisions hereof, the prevailing party shall be 
entitled to reasonable attorneys' fees, whether or not the proceeding results 
in a final judgment.

     13.  EFFECT OF HEADINGS; DEFINITION OF TERMS.  The Section headings 
herein are for convenience only and shall not affect the construction or 
interpretation of this Agreement.  Capitalized terms that are not defined 
herein shall have the meanings set forth in the Reorganization Agreement.

     14.  THIRD PARTY RELIANCE.  Counsel to the parties shall be entitled to 
rely upon this Agreement.


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      IN WITNESS WHEREOF, the parties have caused this Affiliate Agreement to 
be duly executed on the day and year first above written.

C-CUBE MICROSYSTEMS INC.           STOCKHOLDER:


By: ___________________________    By: ___________________________

Name: _________________________    Name: _________________________

Title: ________________________    Stockholder's Address for Notice:

                                   _______________________________
DIVICOM INC.
                                   _______________________________

By: ___________________________    _______________________________

Title: ________________________    Shares beneficially owned:


                                   ____________ shares of
                                   DiviCom Common Stock


                                   ____________ shares of
                                   DiviCom Series A Preferred Stock


                                   ____________ shares of
                                   DiviCom Series B Preferred Stock



               [Signature Page to Affiliate Agreement]


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