Figure 4

                *** Program Execution Summary ***

Program executed:             crc15.exe
Delay/Run period (clicks):    0/0
Start date/time:              October 19, 1989  19:45:12
Stop date/time:               October 19, 1989  19:45:18
Elapsed execution time:       0: 0: 0: 6           6 seconds

Total execution clicks:              95
Approximate clicks/second:         15.8  Approx sample period (ms): 63.2
Total monitored hits:                92

Total symbol entries:               115
Number of symbols hit:                4  % of total symbols hit:     3.5
Total symbol hits:                   73  Avg hits/hit symbol:       18.3

Number of monitored interrupts:       2
Number of interrupts used:            2  % of total monitored:     100.0
Total BIOS interrupt calls:         141  Avg # interrupts/hit:       7.4
Total BIOS interrupt hits:           19  Avg # hits/interrupt:       0.1

Number of DOS calls used:            12
Total DOS program calls:            113

Time in program (secs):            4.76  % of total:       79.3
Time in BIOS/DOS (secs):           1.24  % of total:       20.7
Time below program (secs):         0.00  % of total:        0.0
Time above program (secs):         0.00  % of total:        0.0

Total KNOWN time used (secs):      6.00  % of total:      100.0
Total UNKNOWN time used (secs):    0.00  % of total:        0.0

        *** Symbol Execution Summary ***

 Abs Addr      Hits  Loc %  Tot %  Entry Name
---------  --------  -----  -----  ----------
       7a        12   16.4   13.0  _crc
      11e        50   68.5   54.3  _crc_update
      3e4         1    1.4    1.1  __chkstk
     1edc        10   13.7   10.9  __aNlshr

--- HINT --- HINT --- HINT --- HINT --- HINT --- HINT --- HINT --- HINT ---

        Concentrate on the following functions to improve your program's
        performance:

               _crc ( 13.0)
               _crc_update ( 54.3)
               __aNlshr ( 10.9)