1
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549



                                    FORM 8-K




                                 CURRENT REPORT



                       PURSUANT TO SECTION 13 OR 15(d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934



         DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED): JULY 21, 1999





                              LSI LOGIC CORPORATION
- --------------------------------------------------------------------------------
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)





            DELAWARE                         0-11674                         94-2712976
- -----------------------------------------------------------------------------------------------------
                                                            
 (STATE OR OTHER JURISDICTION OF     (COMMISSION FILE NUMBER)     (I.R.S. EMPLOYER IDENTIFICATION NO.)
 INCORPORATION OR ORGANIZATION)




                             1551 MCCARTHY BOULEVARD
                           MILPITAS, CALIFORNIA 95035
- --------------------------------------------------------------------------------
          (ADDRESS, INCLUDING ZIP CODE, OF PRINCIPAL EXECUTIVE OFFICES)



               REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:

                                 (408) 433-8000



                                 NOT APPLICABLE
- --------------------------------------------------------------------------------
          (FORMER NAME OR FORMER ADDRESS, IF CHANGED SINCE LAST REPORT)



================================================================================


   2

ITEM 5. OTHER EVENTS.

               The information that is set forth in the Registrant's Press
               Release dated July 21, 1999 is incorporated herein by reference.

ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS.

               (c)    Exhibits.

               99.1   Text of Press Release dated July 21, 1999



   3

        Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                              LSI LOGIC CORPORATION
                              A Delaware Corporation


Dated: July 23, 1999          By:   /s/ R. Douglas Norby
                                  ----------------------------------------------
                                     R. Douglas Norby
                                     Executive Vice President, Finance and
                                     Chief Financial Officer



   4
                                 EXHIBIT INDEX




Exhibit Number        Description
- --------------------------------------------------------------------------------
                   
        99.1          Text of Press Release dated July 21, 1999.