From: ohland@charter.net   
      
   SYSTEM BOARD FRU PART NUMBER MUST BE P/N92F0108 OR P/N85F0077   
   SYSTEM BIOS DATE MUST BE 09-24-91 OR EARLIER   
      
   ECA098, OBSOLETE   
      
      
         THIS ECA PROVIDED A ROM* BIOS** REPLACEMENT KIT FOR THE 8535   
         OR 8540 SYSTEM THAT EXPERIENCE CORRUPTED HARDFILE DATA DURING   
         RESTORE OPERATIONS FROM A DISKETTE DRIVE OR TAPE UNIT.   
      
          * ROM=READ ONLY MEMORY.   
          **BIOS=BASIC INPUT/OUTPUT SYSTEM.   
          NOTE:   
            BOTH ROM BIOS MODULES ARE ON THE SYSTEM BOARD AT LOCATIONS   
            U19 AND U31. INSTALLATION INSTRUCTIONS ARE INCLUDED IN THE   
            ROM BIOS KIT.   
      
      
        PHYSICAL CHECK:   
         TO QUALIFY FOR ROM BIOS REPLACEMENT KIT, THE SYSTEM MUST MEET   
         THE FOLLOWING REQUIREMENTS:   
      
         1. THE SYSTEM UNIT SERIAL NUMBER MUST FALL WITHIN THE FOLLOWING   
            RANGES:   
      
          8535 SYSTEMS-   
           A. MODEL 8535-040,1. SERIAL NUMBER 23-A0000 TO 23-M9999.   
                             2. SERIAL NUMBER 78-TXD00 TO 78-XPV99.   
           B. MODEL 8535-043,1. SERIAL NUMBER 23-AA000 TO 23-TC999.   
                             2. SERIAL NUMBER 78-AAAA0 TO 78-BLTG9.   
           C. MODEL 8535-24X,1. SERIAL NUMBER 23-TD000 TO 23-ZK999.   
                             2. SERIAL NUMBER 78-BLTH0 TO 78-CYKP9.   
      
          8540 SYSTEMS-   
           A. MODEL 8540-040,1. SERIAL NUMBER 23-AA000 TO 23-NN999.   
                             2. SERIAL NUMBER 78-NM000 TO 78-PM999.   
           B. MODEL 8540-043,1. SERIAL NUMBER 23-AAA00 TO 23-LGX99.   
                             2. SERIAL NUMBER 78-YMKW0 TO 78-ZFFY9.   
           C. MODEL 8540-045,1. SERIAL NUMBER 23-AAAA0 TO 23-LYDX9.   
                             2. SERIAL NUMBER 78-XBX00 TO 78-YDG99.   
      
         **************************   OR   ******************************   
         2. THE SYSTEM BIOS DATE MUST BE 09-24-91 OR EARLIER.   
      
           THE FOLLOWING PROCEDURE SHOULD BE USED TO DETERMINE SYSTEM   
           BIOS DATE:   
           - AT THE C: > TYPE "BASIC" AND PRESS "ENTER".   
           - AT THE "OK" TYPE THE FOLLOWING EXACTLY AS SHOWN:   
             DEF SEG=-1: FOR X=5 TO 12: PRINT CHR$(PEEK(X));: NEXT   
           - IF "SYNTAX ERROR" IS DISPLAYED INSTEAD OF A DATE, VERIFY   
             THE LINE WAS TYPED EXACTLY AS SHOWN ABOVE.   
           - IF THE DATE DISPLAYED IS 09-25-91 OR LATER, THE SYSTEM IS   
             NOT ELIGIBLE FOR THIS ECA.   
           - IF THE DATE DISPLAYED IS 09-24-91 OR EARLIER, THE SYSTEM   
             IS ELIGIBLE FOR THIS ECA IF REQUIREMENT 3 (BELOW) IS MET.   
      
         *************************   AND   ****************************   
      
         3. SYSTEM BOARD FRU PART NUMBER MUST BE P/N92F0108 OR P/N85F0077   
      
         NOTE:   
            SYSTEM BOARD FRU PART NUMBERS THAT ARE NOT LISTED ABOVE ARE   
            NOT EXPOSED TO THESE PROBLEMS.   
      
        PREREQUISITES:  NONE   
      
        COMPANION:  NONE   
      
        CONCURRENT:  NONE   
      
        DETAIL:   
         A LIMITED NUMBER OF 8535 AND 8540 SYSTEMS MAY EXPERIENCE   
         CORRUPTED DATA ON THE HARDFILE DURING A RESTORE OPERATION   
         FROM A TAPE UNIT OR DISKETTE DRIVE. THIS PROBLEM CAN ONLY   
         OCCUR WITH HARDWARE WHICH ATTACHES TO THE SYSTEM BOARD   
         DISKETTE DRIVE CONNECTOR (J15).   
      
         IF THE SYSTEM UNIT MEETS ALL OF THE REQUIREMENTS CALLED OUT   
         IN THE "PHYSICAL CHECK" SECTION, A REPLACEMENT SET OF   
         SYSTEM ROM BIOS (FRU P/N92F2434) SHOULD BE INSTALLED.   
      
         NOTE:   
         A REPLACEMENT STARTER DISKETTE, VERSION 1.20 OR HIGHER, IS   
         INCLUDED WITH THE REPLACEMENT ROM BIOS KIT. THE OLD LEVEL   
         STARTER DISKETTE, VERSION 1.10 AND EARLIER, IS NOT COMPATIBLE   
         WITH THE REPLACEMENT ROM BIOS AND SHOULD BE PROMPTLY DISCARDED.   
      
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