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                                                                Exhibit 10(p)


         FIRST AMENDMENT, dated as of January 29, 1997 (this "First
Amendment"), to the Credit Agreement, dated as of August 29, 1996 (the "Credit
Agreement"), among WESTINGHOUSE ELECTRIC CORPORATION ("Westinghouse"), the
Lenders parties thereto, NATIONSBANK, N.A. and THE TORONTO-DOMINION BANK, as
Syndication Agents, THE CHASE MANHATTAN BANK, as Documentation Agent, and
MORGAN GUARANTY TRUST COMPANY OF NEW YORK, as Administrative Agent. Unless
otherwise specified herein, all capitalized terms defined in the Credit
Agreement and used herein are so used as so defined.

                                  WITNESSETH:

         WHEREAS, Westinghouse wishes to amend the Credit Agreement in the
manner set forth herein; and

         WHEREAS, each of the parties hereto is willing to enter into this
First Amendment on the terms and subject to the conditions set forth herein;

         NOW, THEREFORE, in consideration of the premises and for other good
and valuable consideration the receipt and sufficiency of which is hereby
acknowledged, the parties hereto hereby agree as follows:

                  ARTICLE I-AMENDMENTS TO THE CREDIT AGREEMENT

         The parties hereto hereby agree that the Credit Agreement shall be
amended by (a) adding the shaded underlined text set forth in the Composite
Copy of the Credit Agreement (the "Composite Credit Agreement") attached hereto
as Appendix 1, (b) deleting the shaded stricken text set forth in the Composite
Credit Agreement and (c) adding Annex I and Annex II to this First Amendment as
Exhibit B-7 and Exhibit B-8, respectively, to the Credit Agreement.

                           ARTICLE II--MISCELLANEOUS

         1. Representations and Warranties. Westinghouse hereby represents and
warrants, on and as of the First Amendment Effective Date (as defined below),
that (a) the execution and delivery of this First Amendment and the performance
of this First Amendment and the Credit Agreement as amended by this First
Amendment (the "Amended Credit Agreement") will not conflict with or result in
a breach of, or require any consent under, the charter or By-laws (or other
equivalent organizational documents) of Westinghouse, or any applicable law or
regulation, or any order, writ, injunction or decree of any Governmental
Authority, or any material agreement or instrument to which Westinghouse or any
of its Material Subsidiaries is a party or by which any of them is bound or to
which any of them is subject, or constitute a default under any such agreement
or instrument, or result in the creation or imposition of any Lien upon any of
the revenues or assets of Westinghouse or any of its Material Subsidiaries
pursuant to the terms of any such agreement or


                                     - 1 -

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instrument; (b) Westinghouse has all necessary corporate power and authority to
execute and deliver this First Amendment and to perform its obligations under
this First Amendment and the Amended Credit Agreement; (c) the execution and
delivery of this First Amendment and the performance of this First Amendment and
the Amended Credit Agreement have been duly authorized by all necessary
corporate action on the part of Westinghouse; (d) this First Amendment has been
duly and validly executed and delivered by Westinghouse and each of this First
Amendment and the Amended Credit Agreement constitutes a legal, valid and
binding obligation of Westinghouse, enforceable in accordance with its terms
except as such enforceability may be limited by (i) bankruptcy, insolvency,
reorganization, moratorium, fraudulent transfer or similar laws of general
applicability affecting the enforcement of creditors' rights and (ii) the
application of general principles of equity (regardless of whether such
enforceability is considered in a proceeding in equity or at law); (e) no
authorizations, approvals or consents of, and no filings or registrations with,
any Governmental Authority are necessary for the execution and delivery by
Westinghouse of this First Amendment, for the performance by Westinghouse of
this First Amendment and the Amended Credit Agreement or for the validity or
enforceability hereof or thereof, and (f) each of the representations of
Westinghouse set forth in Article III of the Amended Credit Agreement is true
and correct in all material respects on and as of the First Amendment Effective
Date with the same effect as though made on and as of such date, except to the
extent such representations and warranties expressly relate to an earlier date
in which case such representations and warranties were true and correct in all
material respects as of such earlier date.

         2. No Other Modifications. Except as expressly modified hereby, all
the provisions of the Credit Agreement are and shall continue to be in full
force and effect. Each reference in the Credit Agreement to "this Agreement",
"hereunder", "hereof" and words of like import referring to the Credit
Agreement shall mean the Credit Agreement as amended hereby.

         3. GOVERNING LAW.  THIS FIRST AMENDMENT SHALL BE CONSTRUED IN
ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF NEW YORK APPLICABLE TO
AGREEMENTS MADE WITHIN SUCH STATE, WITHOUT REGARD TO CONFLICTS OF LAW PROVISIONS
AND PRINCIPLES OF SUCH STATE.

         4. Counterparts.  This First Amendment may be executed by one or
more of the parties to this First Amendment on any number of separate
counterparts, and all of said counterparts taken together shall be deemed to
constitute one and the same instrument.

         5. Effectiveness.  This First Amendment shall become effective on and
as of the date (the "First Amendment Effective Date") upon which the following
conditions shall have been satisfied:


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                           (a) the Administrative Agent shall have received
                  executed counterparts of this First Amendment from
                  Westinghouse and the Required Lenders; and

                           (b) the Administrative Agent shall have received (i)
                  the executed legal opinion of Louis J. Briskman, Senior Vice
                  President and General Counsel of Westinghouse, dated the
                  First Amendment Effective Date, covering, with respect to
                  this First Amendment and the Amended Credit Agreement,
                  substantially the same matters covered in Exhibit E-1 to the
                  Credit Agreement; and (ii) the executed legal opinion of an
                  Assistant General Counsel or Associate General Counsel of
                  Westinghouse licensed to practice law in the State of New
                  York, dated the First Amendment Effective Date, covering,
                  with respect to this First Amendment and the Amended Credit
                  Agreement, substantially the same matters covered in Exhibit
                  E-2 to the Credit Agreement.

         IN WITNESS WHEREOF, the parties hereto have caused this First
Amendment to be duly executed by their respective authorized officers as of the
day and year first above written.

                                        WESTINGHOUSE ELECTRIC CORPORATION

                                        By      
                                           ------------------------------------
                                        Title:  

                                        MORGAN GUARANTY TRUST COMPANY OF
                                        NEW YORK, as a Lender and as 
                                        Administrative Agent

                                        By      
                                           ------------------------------------
                                        Title:  

                                        THE CHASE MANHATTAN BANK

                                        By      
                                           ------------------------------------
                                        Title:  

                                        NATIONSBANK, N.A.

                                        By      
                                           ------------------------------------
                                        Title:  


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                                        THE TORONTO-DOMINION BANK

                                        By      
                                           ------------------------------------
                                        Title:  

                                        BANKERS TRUST COMPANY

                                        By      
                                           ------------------------------------
                                        Title:  

                                        THE BANK OF NEW YORK

                                        By      
                                           ------------------------------------
                                        Title:  

                                        THE BANK OF TOKYO-MITSUBISHI, LTD.

                                        By      
                                           ------------------------------------
                                        Title:  

                                        CITIBANK, N.A.

                                        By      
                                           ------------------------------------
                                        Title:  

                                        THE DAI-ICHI KANGYO BANK, LTD.

                                        By      
                                           ------------------------------------
                                        Title:   

                                        DEUTSCHE BANK AG NEW YORK BRANCH AND/OR
                                        CAYMAN ISLANDS BRANCH

                                        By 
                                           -------------------------------------
                                        Title:  


                                     - 4 -

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                                         THE FUJI BANK, LIMITED, NEW YORK BRANCH

                                         By      
                                           ------------------------------------
                                         Title:  

                                         THE INDUSTRIAL BANK OF JAPAN, 
                                         LIMITED, NEW YORK BRANCH

                                         By      
                                           ------------------------------------
                                         Title:  

                                         MELLON BANK, N.A.

                                         By       
                                           ------------------------------------
                                         Title:   

                                         PNC BANK, NATIONAL ASSOCIATION

                                         By       
                                           ------------------------------------
                                         Title:  

                                         ROYAL BANK OF CANADA

                                         By      
                                           ------------------------------------
                                         Title:  

                                         THE SANWA BANK, LIMITED, NEW YORK 
                                         BRANCH

                                         By      
                                           ------------------------------------
                                         Title:  

                                         SOCIETE GENERALE, NEW YORK BRANCH

                                         By      
                                           ------------------------------------
                                         Title:  


                                     - 5 -

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                                    THE SUMITOMO BANK, LIMITED

                                    By      
                                      -----------------------------------
                                    Title:  

                                    ABN AMRO BANK N.V.
   
                                    By  
                                       ---------------------------------------
                                    Title: 

                                    THE ASAHI BANK, LTD.
 
                                    By     
                                      -----------------------------------
                                    Title:   

                                    BANK OF MONTREAL

                                    By      
                                      -----------------------------------
                                    Title:  

                                    BARCLAYS BANK PLC

                                    By      
                                      -----------------------------------
                                    Title:   

                                    THE FIRST NATIONAL BANK OF CHICAGO

                                    By 
                                      -----------------------------------
                                    Title:   

                                    LTCB TRUST COMPANY

                                    By       
                                      -----------------------------------
                                    Title:   


                                     - 6 -

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                                    THE MITSUBISHI TRUST AND BANKING CORPORATION

                                    By     
                                       -----------------------------------------
                                    Title:  

                                    THE MITSUI TRUST & BANKING CO., LTD.

                                    By      
                                       -----------------------------------------
                                    Title:  

                                    THE SAKURA BANK, LTD.

                                    By      
                                       -----------------------------------------
                                    Title:  

                                    THE TOKAI BANK, LIMITED

                                    By       
                                       -----------------------------------------
                                    Title:  

                                    WESTDEUTSCHE LANDESBANK GIROZENTRALE

                                    By      
                                       -----------------------------------------
                                    Title:  

                                    By       
                                      ------------------------------------------
                                    Title:  

                                    THE YASUDA TRUST AND BANKING CO., LTD.

                                    By      
                                      -----------------------------------------
                                    Title:  

                                    ARAB BANK PLC

                                    By      
                                      -----------------------------------------
                                    Title:  


                                     - 7 -

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                                    THE BANK OF NOVA SCOTIA

                                    By    
                                       -----------------------------------------
                                    Title: 

                                    BANQUE PARIBAS

                                    By    
                                       -----------------------------------------
                                    Title: 

                                    By    
                                       -----------------------------------------
                                    Title: 

                                    BAYERISCHE VEREINSBANK AG CHICAGO BRANCH

                                    By   
                                       -----------------------------------------
                                    Title: 

                                    CAISSE NATIONALE DE CREDIT AGRICOLE

                                    By      
                                       -----------------------------------------
                                    Title:  

                                    CIBC INC.

                                    By       
                                       -----------------------------------------
                                    Title:

                                    CP, AGMOE FOMAMCOERE DE COC ET DE L'UNION 
                                    EUROPEENNE

                                    By      
                                       -----------------------------------------
                                    Title:  

                                    By      
                                       -----------------------------------------
                                    Title:  


                                     - 8 -

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                                     CREDIT LYONNAIS NEW YORK BRANCH

                                     By   
                                       -----------------------------------------
                                     Title: 

                                     KEYBANK NATIONAL ASSOCIATION

                                     By     
                                       -----------------------------------------
                                     Title: 

                                     NIPPON CREDIT BANK, LTD.

                                     By     
                                       -----------------------------------------
                                     Title: 

                                     THE NORINCHUKIN BANK

                                     By     
                                       -----------------------------------------
                                     Title: 

                                     THE ROYAL BANK OF SCOTLAND plc

                                     By     
                                       -----------------------------------------
                                     Title: 

                                     THE SUMITOMO TRUST & BANKING CO., LTD., 
                                     NEW YORK BRANCH

                                     By     
                                       -----------------------------------------
                                     Title: 

                                     THE TOYO TRUST & BANKING CO., LTD.

                                     By     
                                       -----------------------------------------
                                     Title: 

                                     - 9 -

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                              BANCA COMMERCIALE ITALIANA

                              By  
                                 ---------------------------------------
                              Title:  

                              By      
                                 ---------------------------------------
                              Title:  

                              BANQUE NATIONALE DE PARIS

                              By      
                                 ---------------------------------------
                              Title:  

                              CORESTATES BANK, N.A.

                              By      
                                 ---------------------------------------
                              Title:  

                              FIRST COMMERCIAL BANK, NEW YORK AGENCY

                              By      
                                 ---------------------------------------
                              Title:

                              GULF INTERNATIONAL BANK BSC
 
                              By  
                                --------------------------------------------
                              Title:  


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