Abstract:  ECA001, IBM PC 700 PENTIUM PROCESSOR REPLACEMENT


 PURPOSE:
 THE PURPOSE OF THIS ECA IS TO PROVIDE A REPLACEMENT INTEL 90MHZ
 PENTIUM PROCESSOR FOR AN IBM PC 700 SERIES SYSTEM.  THE
 REPLACEMENT IS TO RESOLVE THE "REDUCED PRECISION" FLOATING
 POINT CALCULATION PROBLEM.

 INTEL HAS ACKNOWLEDGED A DEFECT IN ITS PENTIUM MICROPROCESSOR
 THAT CAN CAUSE INACCURATE RESULTS IN SOME MATHEMATICAL
 APPLICATIONS.  IN SOME CASES THE PRECISION OF THE PENTIUM
 DIVIDE OPERATION MAY BE REDUCED.

 FEATURES:
 Type,                  Machines Affected
 Model,   With          and/or Feature/Device     B/M to be    Service  System
 Stage    B/M           Description               Installed    Hours    Hours

 6875     B/M0000000    6875 PC 730 ALL           B/M0000000   00.3     00.2
                        4XX MODELS
 6885     B/M0000000    6885 PC 750 MODELS        B/M0000000   00.3     00.2
                        48H 23GG000-23GG166
                        45H 23AA000-23AA732
                        ALL OTHER 4XX MODS.
                        NOT LISTED ABOVE.

 PHYSICAL CHECK:
 ALL SYSTEMS WITHIN THE ABOVE SERIAL NUMBER RANGES WERE
 MANUFACTURED WITH THE AFFECTED PENTIUM PROCESSOR.  TO
 VERIFY THE PROCESSOR IS AFFECTED, A PROCESSOR TEST PROGRAM
 HAS BEEN MADE AVAILABLE BY IBM.  THIS BOOTABLE PROGRAM WILL
 DISPLAY PROCESSOR ID INFORMATION AND TEST THE PROCESSOR'S
 FLOATING POINT DIVISION FUNCTION.  THE TEST RESULTS WILL BE
 DISPLAYED TO THE USER, AND CLEARLY IDENTIFY IF THE PROCESSOR
 HAS THE FLOATING POINT DIVIDE (FDIV) DEFECT.

 THE CPUIDIBM PROGRAM MAY ALSO BE OBTAINED FROM THE IBM PC
 COMPANY BBS SYSTEM BY CALLING 1-919-517-0001. LOCATE THE
 "MISCELLANEOUS FILES" SECTION (SECTION #7) FOR THE FILE
 TITLED "CPUIDIBM.DSK."

 THE CPUIDIBM PROGRAM MAY ALSO BE DOWNLOADED VIA THE INTERNET
 FROM THE IBM PERSONAL COMPUTER FILE LIBRARY BY SEARCHING THE
 FOLLOWING INTERNET URL:
             http://www.us.pc.ibm.com/files.html
 THE PROGRAM IS LOCATED IN THE "MISCELLANEOUS FILES" SECTION
 OR BY USING THE SEARCH FACILITY TO LOCATE THE FILE BY THE
 NAME "CPUIDIBM.DSK."

 INTEL 486 PROCESSORS ARE NOT AFFECTED.

 SYSTEM DIAGNOSTICS RUN WITHOUT ERRORS.

 PREREQUISITES:
 NONE

 COMPANION:
 NONE

 CONCURRENT:
 NONE

 DETAIL:
 SERVICERS WITH AFFECTED SYSTEMS SHOULD ORDER FRU P/N06H4567
 USING NORMAL PARTS ORDERING PROCEDURES FOR A REPLACEMENT INTEL
 90MHZ PENTIUM PROCESSOR.  THE FRU KIT CONTAINS THE PROCESSOR,
 HEATSINK AND THERMAL GREASE.

 THE DEFECTIVE PROCESSOR SHOULD BE RETURNED USING NORMAL PARTS
 RETURN PROCEDURES.

 THIS ECA DOES NOT COVER ANY SYSTEM BOARD REPLACEMENTS IN THE
 IBM PC 700.  THERE ARE NO SYSTEM BOARDS IN FRU STOCK THAT
 CONTAIN AN UPDATED PROCESSOR.

 NOTES:
 ALL PARTS ARE TO BE RETURNED TO IBM IMMEDIATELY FOLLOWING THE
 INSTALLATION.

 IBM AND TSS SERVICERS SHOULD RECORD PARTS, ACTUAL TIME AND
 TRAVEL TO:   SERVICE CODE -  33
              D/T6875, ECA 001
              OTHER OFFICE - 990

 THIS ECA WILL EXPIRE FEBRUARY 06, 1998

 PENTIUM IS A TRADEMARK OF INTEL CORPORATION

 SAS KEYWORDS:
    PSY2               68XX               PSY2ECA            IBMPC
    D/T6885            PSY2OPER           PSVPPROG           PSY2PROG
    PENTIUM            PSY2PART           PSVP               PENT
    PC730              PC750              PC700              PSVPOPER
    PSVPPART           D/T68XX            6885               6875
    ECAVALID           06H4567            PSVPECA