OfflineList Dat File

Discussion in 'NDS - ROM Hacking and Translations' started by - Wrath of God -, May 24, 2007.

  1. - Wrath of God -
    OP

    - Wrath of God - God

    Member
    2
    Nov 8, 2003
    United States
    Okay, so here's the deal. For a while now I've been working with the OfflineList dat files from Advanscene, and for the love of me, I can't figure out what the "im1CRC" and "im2CRC" are CRC's of. Also, it would help if someone could help me identify ROMs quicker - instead of calculating the entire rom's CRC32, to calculate just a part - in a way that would work on trimmed roms too.

    As always, thanks in advance.
     
  2. legendofphil

    legendofphil Phil no Densetsu

    Member
    2
    Nov 19, 2002
    im1CRC and im2CRC are the CRC values for the box images, screen caps, etc.

    EDIT: I can't see how scanning part of a ROM would work. Assuming you are talking about scaning for a certain file within the ROM you could end up getting a bad dump, where that file is the same as on a proper dump. The all over CRC is easier to calculate, but this would exclude trimmed ROMs because each time you trim it you would get a different CRC.
     
  3. - Wrath of God -
    OP

    - Wrath of God - God

    Member
    2
    Nov 8, 2003
    United States
    Well the part of the rom I was thinking of scanning was the header. But, yeah that's exactly what I'm thinking. However when you're scanning 1000 files or even 200, Scanning each file can take a long time. That's why I don't get how OfflineList, Rominator and all those other rom managers can just scan a directory of 300 files and come up with the results in like 5 seconds.

    Are there better ways of identifying roms with the information given in OfflineList's dat file? Or maybe there's another dat file I can use?
     
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