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    MCP Installation Troubleshooting: Miscellaneous Problems

    
    

    USING LOTUS 1-2-3 TO TEST YOUR MATH COPROCESSOR

    
         Here's a quick and easy method for testing your math coprocessor using
    
            Lotus 1-2-3:
    
    
    
         1.  Enter this formula in cell A1:  @exp(@rand)
    
    
    
         2.  Copy the formula to a large range with this command: /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 1 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.
    
    

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