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 Overdump? (SD The Great Battle - Aratanaru Chousen (Japan) (Rev 1))
 
Argument: ROM data , Reference: 3706 , Closed by: C. V. Reynolds
C. V. Reynolds @ 2018-05-31 20:53:28

This ROM data has all repeated bytes after the 786432 (C0000) point. Notice the 1.0 version is only 786432 bytes instead of 1 MB. I suspect this Rev 1 is an overdump and should be trimmed to be 786432 bytes.
C. V. Reynolds @ 2018-06-09 08:32:32

Implemented myself. Please open a new topic if you want to make an argument about the size of the dump.