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    MCP INSTALLATION TROUBLESHOOTING: USING DIAGNOSTICS

    
    

    USING DIAGNOSTICS

    
       FaxBack # 3068.00
    
    
    
       There are several methods to test your Intel math coprocessor if you
    
       experience problems after installation. If your system runs slower than
    
       expected, or if your  math coprocessor fails to function, you can use
    
       Intel*s Advanced Diagnostics to diagnose the problem. Diagnostics ship
    
       on diskette with all Intel math coprocessors.
    
       
    
       You can also obtain Intel Advanced Diagnostics from your distributor,
    
       from the Intel  BBS or by contacting Intel directly.
    
       
    
       The Intel Math CoProcessor test program CHKCOP is also available on the
    
       Intel  BBS or from your dealer.  If you aren't able to download CHKCOP,
    
       you can  request a copy from Intel Customer Support.
    
       
    
       The parameters for CHKCOP are : 
    
       
    
            chkcop /c For continuous testing
    
            chkcop n  Where n is any number from 1 to 5, the numbers on the
    
                      command line are the tests which are skipped. (i.e., 
    
       chkcop 
    
                      /c 1 4  CHKCOP continuously tests on tests 2,3, and 5).
    
       
    
       If you have a copy of Lotus 1-2-3, you can use the following method for
    
       testing your math coprocessor:
    
            1.   Enter the following formula in cell A1:   @exp(@rand) 
    
            2.   Use the following command to copy the formula to a large
    
       range: 
    
                 /C A1..Z400
    
            3.   Press F9 and time how long it takes the spreadsheet to
    
       recalculate.
    
       
    
       In an 8 MHz computer, it should take about one minute without a math
    
       coprocessor and about 10 seconds with a math coprocessor.  In a 4.77 MHz
    
        computer, it should take about 3 minutes to recalculate without a math 
    
       coprocessor and about 27 seconds with a coprocessor.  The difference in
    
       time is noticeable even without a stopwatch.
    
       
    
       Use the following suggestions if your computer or Intel*s diagnostics do
    
       not  recognize your Intel math coprocessor: 
    
       
    
       Check your manual for any jumpers or switches that may need to be set.
    
       
    
       Check your manual to see if there is a setup or configuration program
    
       that needs to be run once you have installed the math coprocessor.
    
       
    
       Be sure that the math coprocessor is completely seated.  Look to see if 
    
       the chip is seated flush in the socket and that one corner is not higher
    
        than the others. Try pushing down on each corner.
    
       
    
       Check that pin 1 on the math coprocessor matches pin 1 on the socket
    
       and/or the motherboard.
    
       
    
    
    
       If you are experiencing problems with drives or other accessories, check
    
       to ensure that all cables and cards are fully seated.
    
       
    
       If the above suggestions don't help, remove the math coprocessor and
    
       check for any bent or broken pins and make sure the socket is clean and
    
       free of dust. Then, reseat the math coprocessor. If you need a math
    
       coprocessor extraction  tool, contact  your local dealer or Intel.
    
       
    
       If you have access to another computer that is compatible with this math
    
        coprocessor, install the math coprocessor in the second computer to
    
       determine if the problem is with the chip or the computer.
    
       
    
       For further information on troubleshooting diagnostic failures, refer to
    
       FaxBack  document 3069, MCP Installation Troubleshooting: Diagnostic
    
       Failures.
    
    

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