SCHEDULE 14A INFORMATION

               PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE
                       SECURITIES EXCHANGE ACT OF 1934 
                               (AMENDMENT NO.  )
        
Filed by the Registrant [X]

Filed by a Party other than the Registrant [_] 

Check the appropriate box:

[_]  Preliminary Proxy Statement        [_]  CONFIDENTIAL, FOR USE OF THE    
                                             COMMISSION ONLY (AS PERMITTED BY
[_]  Definitive Proxy Statement              RULE 14a-6(e)(2))
                                                                               
[X]  Definitive Additional Materials                                            
                                                                               
[_]  Soliciting Material Pursuant to Section 240.14a-11(c) or Section 240.14a-12
                                                                                


                        Quickturn Design Systems, Inc.
   ------------------------------------------------------------------------
               (Name of Registrant as Specified In Its Charter)            
                                                                           
                                                                           
   ------------------------------------------------------------------------
   (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

   
Payment of Filing Fee (Check the appropriate box):

[X]  No fee required.

[_]  Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

     (1) Title of each class of securities to which transaction applies:

     (2) Aggregate number of securities to which transaction applies:

     (3) Per unit price or other underlying value of transaction computed
         pursuant to Exchange Act Rule 0-11 (Set forth the amount on which
         the filing fee is calculated and state how it was determined):

     (4) Proposed maximum aggregate value of transaction:

     (5) Total fee paid:

[_]  Fee paid previously with preliminary materials.
     
[_]  Check box if any part of the fee is offset as provided by Exchange Act
     Rule 0-11(a)(2) and identify the filing for which the offsetting fee was 
     paid previously. Identify the previous filing by registration statement 
     number, or the Form or Schedule and the date of its filing.

     (1) Amount Previously Paid:
 
     (2) Form, Schedule or Registration Statement No.:

     (3) Filing Party:
      
     (4) Date Filed:

Notes:


 
                                                               EXHIBIT 99.54

CONTACTS:

     QUICKTURN DESIGN SYSTEMS, INC.            ABERNATHY MACGREGOR FRANK
     Ray Ostby                                 Pauline Yoshihashi / Matt Sherman
     (408) 914-6000                            (212) 371-5999


FOR IMMEDIATE RELEASE


                DELAWARE SUPREME COURT GRANTS QUICKTURN'S MOTION
                              FOR EXPEDITED APPEAL

                 Oral Arguments Scheduled For December 29, 1998

SAN JOSE, Calif.  December 8, 1998 -- Quickturn Design Systems, Inc. (Nasdaq:
QKTN) announced today that the Delaware Supreme Court has granted Quickturn's
motion for an expedited appeal of the December 3, 1998 decision by the Delaware
Chancery Court regarding the delayed redemption provision of Quickturn's
stockholder rights plan.  Oral arguments have been scheduled for December 29,
1998.

Keith R. Lobo, president and chief executive officer of Quickturn, said, "We are
pleased that the Court granted our motion for an expedited appeal.  We continue
to believe that the amendments to the stockholder rights plan were appropriately
adopted by the Quickturn Board and best serve the interests of Quickturn and its
stockholders."

Quickturn Design Systems, Inc. is the leading provider of verification products
and time-to-market engineering (TtME(TM)) services for the design of complex ICs
and electronic systems. The company's products are used worldwide by developers
of high-performance computing, multimedia, graphics and communications systems.
Quickturn is headquartered at 55 W. Trimble Road, San Jose, CA 95131-1013;
Telephone: 408/914-6000. For more information, visit the Quickturn Web site at
www.quickturn.com or send e-mail to info@quickturn.com.

                                     # # #