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  1. #1

    What the letters at the end of ROM files mean

    Might wanna add this to a general FAQ...

    The symbols are there to help us to identify games.

    Heres pretty much all the ones that you'll ever see...

    Standard Codes:
    [a] - Alternate
    [b] - Bad Dump
    [BF] - Bung Fix
    [c] - Cracked
    [f] - Other Fix
    [h] - Hack
    [o] - Overdump
    [p] - Pirate
    [t] - Trained
    [T] - Translation
    (Unl) - Unlicensed
    [x] - Bad Checksum
    ZZZ_ - Unclassified
    [!] - Verified Good Dump
    (???k) - ROM Size

    Special Codes:
    [C] - Color GameBoy
    [S] - Super GameBoy
    (M#) - Multilanguage (# of Languages)
    [M] - Mono Only (NeoGeo Pocket)
    (PC10) - PlayChoice 10 (NES)
    (1) - Japan (Genesis)
    (4) - USA (Genesis)
    (5) - NTSC Only (Genesis)
    (8) - PAL Only (Genesis)
    (BS) - BS ROMS (SNES)
    (ST) - Sufami Turbo (SNES)
    (NP) - Nintendo Power (SNES)
    (Adam) - ADAM Version (Coleco)
    (PAL) - PAL Video

    Country Codes:
    (A) - Australian
    (C) - Chinese
    (E) - Europe
    (F) - French
    (FN) - Finland
    (G) - German
    (GR) - Greece
    (HK) - Hong Kong
    (I) - Italian
    (J) - Japan
    (K) - Korean
    (NL) - Dutch
    (PD) - Public Domain
    (S) - Spanish
    (SW) - Sweden
    (U) - USA
    (UK) - England
    (Unk) - Unknown Country
    (-) - Unknown Country

    Don't know how many people will find this of interest or want to know... but here it is if you want it :)

  2. #2
    Slashing Prices Vorpal 8 Vorpal 8 Vorpal 8 Vorpal 8 Vorpal 8's Avatar
    Join Date
    Nov 2005
    I live in Peace


    Yes these have bugged me for a while too. I know most of them but i try to get only (!) versions of dumps.

    This is a good resource however and it's very informative!

    Take it easy.

  3. #3
    thanks for the help~!! never did knew what those abbrevations mean :)

  4. #4
    Outlaw Zro is on a distinguished road Zro's Avatar
    Join Date
    Feb 2006
    Cottonport, Louisiana
    Actually, I only knew the (!) and the country codes, so this
    is a good resource, thanks forr the info.

  5. #5
    err then whats the [ol] and [ol1] [a1] [ol4] crap?

  6. #6
    If you read more carefully you will find that [a1] means 'alternate 1', as there might be more than just one alternate version.

  7. #7


    I was just about to e-mail somebody to ask if they knew what those little suspicious symbols ment'. Good.. you saved me some work feelin' like a stoopid.

    Thanks bro.

  8. #8

    Exclamation What does (U), (J) and [!] mean in my roms?

    What does (U), (J) and [!] mean in my roms?        
    Written by -LMA-     
    Tuesday, 10 July 2007  
    [a] Alternate              [p] Pirate     
    [b ] Bad Dump            [t] Trained          
    [f] Fixed                    [T] Translation       
    [h] Hack                    (-) Unknown Year       
    [o] Overdump            [!] Verified Good Dump
    (M#) Multilanguage     (# of Languages)          
    (###) Checksum       (??k) ROM Size         
    ZZZ_ Unclassified       (Unl) Unlicensed      
    (1) Japan & Korea          (4) USA & BrazilNTSC 
    (A) Australia                  (J) Japan            
    (B) non USA (Genesis)   (K) Korea            
    (C) China                      (NL) Netherlands      
    (E) Europe                    (PD) Public Domain    
    (F) France                     (S) Spain            
    (F) World (Genesis)                         
    (FC) French Canadian     (SW) Sweden           
    (FN) Finland                   (U) USA             
    (G) Germany                 (UK) England          
    (GR) Greece                  (Unk) Unknown Country  
    (HK) Hong Kong             (I) Italy      
    (H)  Holland                   (Unl) Unlicensed       
    [a] This is simply an alternate version of a  
          ROM. Many games have been re-released to  
          fix bugs or even to eliminate Game Genie  
          codes (Yes, Nintendo hates that device).  
    [b ] A bad dump often occurs with an older     
         game or a faulty dumper (bad connection). 
         Another common source of ROMs is a   
         corrupted upload to a release.       
    [f] A fixed game has been altered in some way
         so that it will run better on a copier    
         or emulator.                              
    [h] Something in this ROM is not quite as it  
         should be. Often a hacked ROM simply has  
         a changed header or has been enabled to   
         run in different regions. Other times it  
         could be a release group intro, or just   
         some kind of cheating or funny hack.    
    [o] An overdumped ROM image has more data     
         than is actually in the cart. The extra   
         information means nothing and is removed  
         from the true image.                      
    [t] A trainer is special code which executes  
         before the game is begun. It allows you   
         to access cheats from a menu.             
    [!] Verified good dump. Thank God for these!

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