Compare byte offsets

The CMPBOFS process statement compares a file between byte limits. The start and stop reference values must be hex values. The statement may be specified on one complete line or may have separate CMPBOFS statements for each of the six keyword operands: TOP, BTM, NTOP, NBTM, OTOP, and OBTM.

Compare Type: BYTE


            .----------------------.   
            V                      |   
>>-CMPBOFS----+-TOP--+--hex_offset-+---------------------------><
              +-BTM--+                 
              +-NTOP-+                 
              +-OTOP-+                 
              +-NBTM-+                 
              '-OBTM-'

keyword

The keyword may have one of the following values:

TOP: Top. Defines the first byte offset position in the new and old byte compare file. Means both NTOP and OTOP. The lowest byte position is at offset zero.
NTOP: New Top. Defines the first byte offset position in the new file for the byte compare.
OTOP: Old Top. Defines the first byte offset position in the old file for the byte compare.
BTM: Bottom. Defines the last byte position in the new and old byte compare file. Means both NBTM and OBTM.
NBTM: New Bottom. Defines the ending point in the new file for the compare.
OBTM: Old Bottom. Defines the ending point in the old file for the compare.

hex_offset

A hexadecimal value. Do not put in apostrophes, or 'bracket' it within "X'...'".

Example: Description
CMPBOFS NTOP 1000 OTOP 5E00: Compare the new file from hex offset X'1000' (to the end of file) with the old file from hex offset X'5E00' (to the end of file).
CMPBOFS NTOP 1000CMPBOFS OTOP 5E00: These two separate process statements have the same effect as the "combined" statement above.