romcmp - MAME rom and romsets check and comparison tool

romcmp is a tool developed to detect the most common errors that can occur when dumping ROMS, for example
       stuck bits and address line errors.

       It  can  check  the  ROMs in ZIP files or subdirectories; it can also be used to compare two ROM sets, by
       giving it two files or subdirectories as parameters. It will determine which ROMS are identical and which
       are the closest matches.  This is useful when figuring out if a newly  dumped  ROM  set  is  a  clone  of
       another ROM set.

romcmpjumpkids.zip will output the following:

         11 files
         23.3c               FIXED BITS (xxxxxx1x)
         23.3c               FIRST AND SECOND HALF IDENTICAL

       This  tells  us  that the 23.3C ROM in Jump Kids is bad, and incidentally, it causes the missing sound in
       that game.

       romcmp - MAME rom and romsets check and comparison tool

-d     Enables a slower, more comprehensive comparison.

       -h     Prints hashes (CRC-32, SHA-1) and 16-bit sums for all files.

mame(6)

0.176                                              2016-07-21                                          ROMCMP(1)

romcmp [-option] [dir1|zip1] [dir2|zip2]