Import Games FAQ by TWilson

Version: 0.93 | Updated: 03/11/01 | Printable Version

Sega Genesis/Sega CD Import FAQ, v0.93

Copyright (C) 2001 Trevor Wilson (

aka jiji (

[insert elite ascii art here]

Latest version always available at


I.   Legal stuff
II.  History
III. Why?
IV.  What's missing?
V.   Genesis
  A. Can I play Megadrive games on my Genesis?
    1. Genesis 1/Genesis 2
    2. Nomad/Genesis 3
    3. Will PAL games play on an NTSC Genesis?
    4. Does the 32X have any sort of lockout?  Will Jpn/PAL/US games work
    with any 32X hardware?
  B. What's this I hear about territory lockout?
    1. What games have territory lockout?
    2. How can I get past the territory lockout?
  C. Are there convertor cartridges available?
    1. Game Genie
      a. What are some Game Genie codes one can use to play import games?
    2. Honey Bee
    3. Mega Key/Super Key
    4. Pro Action Replay
      a. What are some PAR codes one can use to play import games?
    5. Datel Universal Adaptor
  D. Can I modify my Genesis to play import games?
     1.  Can I add a territory switch and/or 50Hz/60Hz switch to my
         Genesis/Mega Drive 1?
     2.  Can I add a 50Hz/60Hz switch to my Genesis/Mega Drive 2?
VI   Sega CD
  A. Is it possible to play foreign CDs on my Sega CD/Mega CD?
VII. Third-party Genesis/Sega CD consoles
  A. JVC X'Eye/Wondermega
  B. Pioneer LaserActive
VIII. Appendix
  A. Who made these Game Genie codes?  And how?
IX. Thanks

I.   Legal stuff

  This document may be reprinted in its entirety without the author's
  permission.  However, if material is taken from the document, credit must
  be given to myself (and I'd like it if you emailed me first, too).

II.  History

  03/11/2001: v0.93
      - Added Game Genie/PAR codes for Bare Knuckle III.
      - Reduced the number of codes for Thunder Force IV, so they'll actually
        work on a real Game Genie.
  02/25/2001: v0.92
      - Added information on the JVC X'Eye and Pioneer LaserActive.  
        Thanks to The Scribe.
  02/23/2001: v0.91
      - Fixed the title of Yuu Yuu Hakusho Makyou Toitsusen.
      - Added information on playing imports on the 32X
      - Added information on switching a Genesis 2 for 50Hz/60Hz and for 
        territory (thanks Mike G!)
  02/23/2001: v0.9
      - First release, preliminary version.

III. Why?

  While deciding whether to try to import the European or Japanese version
  of Alien Soldier a few months ago, I became rather confused as to whether I
  could play it on my US Genesis with just a regular passthrough cartridge
  and about what kind lockout it might have.  I searched around for information
  on this subject, but details were sketchy and answers on Usenet were vague.
  I decided to try to collect all known information on the subject into a
  single source so that others wouldn't be confused the same way I was.

IV.  What's missing?

  - This document is probably riddled with inaccuracies, so if you see any,
    let me know and I'll clean them up.
  - The only set of Game Genie codes I've been able to test on an actual
    Genesis with an actual Game Genie and an actual game cartridge is the
    one for Monster World IV.  The rest were tested on DGen with the good ROM
    dumps of the games.  I can't see any reason why the rest of them
    wouldn't work on a real Genesis, but if you try them out, let me know what
    results you get.
  - The list of games with software territory lockouts is by no means
    complete.  Information on any additional games would be much appreciated.
  - I know for a fact that there are more convertor cartridges out there
    than what I have listed, I just didn't have enough information on them 
    to list them.

V.  Genesis

  Can I play Japanese Megadrive games on my Genesis?

     Yes, with a few provisions.  Take note:  Some Japanese and European
     games have a software lockout in place that affects every US version of
     the console (yes, including the Genesis 3), described in full below.

     Genesis 1/Genesis 2/CDX

     The cartridge slot on the Genesis 1, 2, and CDX is different from that
     of the Japanese Megadrive.  Japanese cartridges are rounded on the ends,
     so you won't be able to get a Japanese cartridge to fit into the
     slotted and narrower cart slot on a Genesis 1/2/CDX.  This can be
     taken care of by either using a passthrough cartridge (see below) or
     removing the tabs in your system's cartridge slot (not really recommended,
     but hey, it's your choice).

     Nomad/Genesis 3

     The cartridge slot on the Genesis 3 is wide and spacious, and leaves
     plenty of room for the extra plastic on the sides of Japanese
     cartridges.  Japanese carts will fit without any trouble.  
     On the Nomad, there is enough room for Japanese carts, but it's a
     tight fit and it may prove a bit difficult getting games in and out
     smoothly, with the ridges on the Japanese carts.

     Will PAL games play on an NTSC Genesis?

     Yes, unless they have the 50/60hz lockout or territory lockout (see
     below) in place.  Many PAL versions of games are no different from their
     US counterparts, which is why they play at a slower speed and with black
     bars at the top and bottom of the screen on European consoles.  These
     games will play without trouble on US consoles.  Other games (of which the
     European version of Alien Soldier is one) have been adapted to the PAL
     format, and thus will run too fast on US consoles (about 70hz).

     Does the 32X have any sort of lockout?  Will Jpn/PAL/US games work
     with any 32X hardware?

     From the* FAQ:
       SEGA 32X: No new incompatibility, but the incompatibility of the 
       underlying Genesis/Mega Drive (and CD player, if you're playing 32X
       CD games) still applies; get a language switch and/or a Pro-CDX, just
       like for regular Mega Drive and Mega CD games.


  What's this I hear about a territory lockout?

     For most of the Genesis's life, cartridges were produced without any
     sort of territory protection.  Some games even had multiple languages for
     different territories, Neo Geo-style.  However, later in the Genesis's
     life, Sega and several third-party developers decided to start
     implementing a software territory lockout to keep people from playing
     games outside of the territory they were intended for.  The software
     routine is different in each game and always resides in a different
     part of the program code. Basically what the routine does is to check the
     hardware address in RAM that specifies what kind of Genesis the game
     is running on (Japanese, US, European, etc), and if that doesn't match
     the intended territory, the game locks up with an error message.

     How can I get past it?

     There are several different means available.  By far the most readily
     available (and least expensive) is to use a Game Genie with the proper
     codes for that game to bypass the protection directly.  Another is to
     obtain a Mega Key, Super Key, Pro Action Replay, or Datel Universal
     Convertor to bypass the protection (more on these below).  A more
     drastic step would be to install a territory switch in your system so that
     you can simply switch your system to the necessary territory.

     What games have it?

     From the FAQ, plus some additions:

         Do not run in English mode: Japanese versions of After Burner II,
           Akumajou Dracula Vampire Killer, Alien Soldier, Bare Knuckle 3, 
           Chameleon Kid, Contra: The Hard Corps, Doraemon, Gunstar Heroes, 
           Monster World 4, Pulseman, Ragnacenti, Rolling Thunder II, Super 
           Monaco GP 2, Super SF2, Thunder Force IV, Virtua Racing, Yuu Yuu 
           Hakusho Makyou Toitsusen.
         Do not run in Japanese mode: US versions of Aladdin, Bio-Hazard
           Battle, Castlevania Bloodlines, Cyborg Justice, Dragon's Fury, 
           Eternal Champions, FIFA Soccer '97 Gold Edition, Flashback, 
           Gauntlet IV, Gunstar Heroes, Landstalker, Lightening Force,
           Mazin Saga, Outrun 2019, Phantasy Star IV, Ren and Stimpy, Rocket
           Knight Adventures, SF2CE, Shadowrun, Shining Force, Shinobi 3,
           Streets of Rage II, Streets of Rage III, Subterrania, Sunset Riders,
           Thunderstrike (CD), World of Illusion, X-Men.
         Do not run in 50 hertz mode: US versions of Flashback, Sonic
           Spinball, Streets of Rage II, World of Illusion, World Series
           Baseball (And probably most of the ones that don't run in Japanese
           mode, too.)
         Does not run in 60 hertz mode: European version of Xenon2.


  Are there convertor cartridges available?

    Yes, there are several passthrough cartridges available that will allow
    you to play import games on you Genesis.

    Game Genie

    This is by far the easiest  and cheapest of the convertor cartridges to
    come by.  Originally intended as a cheat device for games, it intercepts
    requests to certain locations in the ROM data of the cartridge and
    replaces the actual data with bytes entered by the user.  It accepts hex
    addresses encoded into eight-character alphanumeric codes.  By itself and
    without entering any codes it acts as a great adaptor for the differently-
    shaped Japanese Megadrive cartridges.  By entering certain codes, the
    territory lockout in certain games can be bypassed, allowing you to play
    these games on your US Genesis.  NOTE:  The Genesis 3 will not work at all
    with the Game Genie.

       What are some Game Genie codes I can use to play import games?

       Alien Soldier (EUR/JPN PAL, A version)


       Alien Soldier (JPN NTSC, B version)


       Bare Knuckle III

       Contra: The Hard Corps (JPN)


       Golden Axe III


       Monster World IV




       Rockman Megaworld (Mega Man: The Wily Wars JPN)


       Thunder Force IV


       Yuu Yuu Hakusho Makyou Toitsusen (yes, the Treasure one)


   Honey Bee

   Not much is known about this particular device, but it's assumed that it
   is merely a passthrough cartridge meant only to overcome the physical
   difference in cart shape.

   Mega Key/Super Key

   Both of these devices are passthrough cartridges that have several DIP
   switches that allow the user to select the country and/or video format
   that the game detects upon bootup.  The Mega Key only has switches for
   country selection, while the Super Key has the addition of a PAL/NTSC switch
   for games that have a lockout based on the video format.  Setting the
   country switch to Japan, for example, would make a Japanese game with
   territory lockout think it's being run on a Japanese system and therefore
   Datel Action Replay
   From Galen Tatsuo Komatsu:
     "Action Replay:  this is basically a Game Genie type device allowing up
      to (I think) 4 codes to be entered."

   Datel Pro Action Replay (PAR)

   This is a device similar to the Game Genie, with the addition of being
   able to modify data in RAM, as well as intercepting requests to the
   cartridge ROM.  Without entering any codes, it works as an excellent
   passthrough device for games, but like the Game Genie, with certain codes
   the territory lockout in certain games can be bypassed.
   From Galen Tatsuo Komatsu:
     "In addition to the above, it also includes the "trainer" to generate your 
      own codes."

      What are some PAR codes I can use to play import games?

        Alien Soldier (EUR/JPN PAL, A version)


        Alien Soldier (JPN NTSC, B version)


        Bare Knuckle III

        Contra: The Hard Corps (JPN)

        Golden Axe III


        Monster World IV




        Rockman Megaworld (Mega Man: The Wily Wars JPN)


        Thunder Force IV


        Yuu Yuu Hakusho Makyou Toitsusen (yes, the Treasure one)


  Datel Pro Action Replay 2
  From Galen Tatsuo Komatsu:
    "Pro Action Replay 2: taking further steps, this allows up to 100 codes
    to be entered, has a built in library of codes for most games
    available at the time, and some other functions, the most notable of
    which bypasses territorial lockouts.  The PAR2 has incompatability
    problems with the Sega CDX.  It appears to start up fine, but the
    controller doesn't respond."

  Datel Universal Adaptor

  [information forthcoming]

  Can I modify my Genesis to play import games?

   Yes, but the procedure varies for the different Genesis/Mega Drive

   Can I add a territory switch and/or 50Hz/60Hz switch to my Genesis/Mega
   Drive 1?

      Yes.  From the Sega Programming FAQ:

      How to make a language switch (Genesis/MD).

      On a Genesis/MD, there are jumpers labelled JP1, JP2, JP4,
      and JP3.  The Genesis has a capacitor on JP1 and a trace on
      JP2; the Mega Drive has a capacitor on JP2 and a trace on
      JP1.  The bottom ends of JP1 and JP2 are connected together.
      So if you cut the trace and the top end of the capacitor, and
      install a DPDT switch between them which reconnects them
      either unchanged or swapped left to right, you have a
      language switch. You'll need some wire, a soldering iron,
      solder, and a DPDT switch.

      Some machines have an open circuit instead of the capacitor.
      Also, I've been told that even if there is a capacitor, you
      can throw it out and leave an open circuit. Either way, the
      switch is a lot simpler, requiring a SPDT switch and less
      wire and solder.

      Several people have told me that you could just cut both JP1
      and JP2 and put a SPST switch on JP1. This is even simpler,
      but I'm not sure it really works, as opposed to putting your
      machine in an intermediate state that only sort-of works.

      The redesigned Genesis 2 machines don't appear to have either
      the capacitor or circuit. Nobody yet knows how to make the
      language switch for one, though there are language switch
      cartridges you can buy to act as one.

      IF YOUR MACHINE HAS NO CAPACITOR (or if you want to cross
      your fingers and throw away your capacitor) and is not a
      Genesis 2:

      Cut JP2.  The trace might be covered with paint and hard to
      see.  (If you started with a Mega Drive, JP2 is open and you
      have to cut JP1 instead.) If you aren't sure which end I mean
      by "bottom", just check the back of the board to see which
      end is connected together.

      Original state of machine:             After cutting:

       JP2 top     JP1 top              JP2 top     JP1 top
          |           |                    |           |
          |           |                    |           |
          |           |                    |           |
           \         /                      \         /
            \_______/                        \_______/
          bottom of both                   bottom of both

      Add a SPDT switch which can be in one of two positions:
        ._ _ _ _ _ _ _ _ _ _ _ _
             .                        .
            .           . _ _ _ _ _ _ _ _ _ _
           .           .                .    .
       JP2 top     JP1 top               .    .
          |           |                  .    .
          |           |                 _________
                | o   o |
                | \     |
                |  \    |
          |           |                     .
           \         /                      .
            \_______/ - - - - - - - - - - - -
          bottom of both

        ._ _ _ _ _ _ _ _ _ _ _ _
             .                        .
            .           . _ _ _ _ _ _ _ _ _ _
           .           .                .    .
       JP2 top     JP1 top               .    .
          |           |                  .    .
          |           |                 _________
                | o   o |
                |     / |
                |    /  |
          |           |                     .
           \         /                      .
            \_______/ - - - - - - - - - - - -
          bottom of both


      Cut both sides.  (Note: if you started with a Japanese Mega
      Drive the capacitor will be on the side labelled X instead)

      Original state of machine:             After cutting:

       JP2 top     JP1 top              JP2 top     JP1 top
          |           |                    |           |
          |           |                    |           |
          |           |
          |           |
          |           |                    |
        X |          ###                 X |          ###
          |          ###                   |          ###
          |          ###                   |          ###
           \         /                      \         /
            \_______/                        \_______/
          bottom of both

      add switch which can be in one of two positions:

       JP2 top     JP1 top
      (Connect 2 to 2
          |           |
      and 1 to 1)
          |           |
          2           1                   2  1  1  2
           _ _ _ _ _ _ _ _ _ _          | o  o  o  o |
          |                   `         |  \  \      |
        X |          ###`      `        |   \  \     |
          |          ### `      `       \____o__o____/
          |          ###  `      `           '  '
           \         /     `      `- - - - -'  '
            \_______/       ` _ _ _ _ _ _ _ _ '
          bottom of both

       JP2 top     JP1 top
      (Connect 2 to 2
          |           |
      and 1 to 1)
          |           |
          2           1                   2  1  1  2
           _ _ _ _ _ _ _ _ _ _          | o  o  o  o |
          |                   `         |      /  /  |
        X |          ###`      `        |     /  /   |
          |          ### `      `       \____o__o____/
          |          ###  `      `           '  '
           \         /     `      `- - - - -'  '
            \_______/       ` _ _ _ _ _ _ _ _ '
          bottom of both

      50/60 hertz switch.

      You can build a 50/60 hertz switch on a Genesis/Mega Drive
      like a language switch, but using jumpers JP3 and JP4.  The
      standard setting is 50 in PAL areas such as Europe, and 60 in
      NTSC areas like the US and Japan. In the 60 hertz mode, the
      game is faster and the screen taller; however, not all TVs
      and monitors in Europe can display this mode.

      Some American/Japanese games are protected to keep Europeans
      from playing them; this protection checks the 50/60 hertz
      setting.  You can usually get around it by installing the
      switch and switching when starting the game, then switching
      back afterwards.

      Many European games are simple ports of American or Japanese
      games and are not redesigned for 50 hertz, so work faster and
      with "better" screen proportions if played at 60 hertz.

      Genesis/Mega Drive dual version (language switch) list:

      *Battle Mania 2: The game plays in both positions. However
      with both controlers removed, a system info screen appears
      which informs about system version, langauge mode.
      Bonanza Brothers: Game plays in Japanese.  (Maybe. There
      seems to be more than one version floating around.)
      Columns: Game plays in Japanese.
      *Cyberball: Japanese version has a modem option.
      Dragon's Fury: Works only with language set to English.
      The original, Devil's Crush MD, works either way.
      Dynamite Duke: Harder on the Mega Drive.
      Elemental Master: Harder on the Mega Drive.
      Fatal Labyrinth: Game plays in Japanese.
      Fire Shark: Different title screen with Kanji.
      Flicky: Characters have Japanese names and instructions
      are in Japanese.
      Forgotten Worlds: Game plays in Japanese.
      Gaiares: only mentions the Japanese licensee on the title
      screen, and has Japanese text; you can also select
      Japanese text from the option screen.
      Ghostbusters: Game plays in Japanese.
      Ghouls and Ghosts: Different title screen with Kanji.  To
      see it on a Genesis, select the last music and sound (26
      and 56) from the options screen, then press lower left;
      A, B, or C; and Start all at the same time.  (I never
      tried this, but Gamepro magazine claimed it works.) The
      game shows some other Japanese text, and when you die
      during a boss you start out earlier.
      Insector X: Title screen refers to company as Hot-B, not
      Sage's Creation. The MD version shoots more slowly. The
      ending text is still English.
      *Marvel Land: The Japanese version says "for Mega Drive"
      or "for Genesis" but the language stays Japanese. (What
      does an English version do?)
      Monaco GP: Game plays in Japanese (also an option on the
      option screen).
      Mystic Defender: This game is actually the anime-based
      Kujaku-Ou (Peacock King) 2 game. In Japanese mode, the
      opening text is replaced by a graphics screen (never
      seen in the US version) with Japanese.  The levels have
      names, the main character wears a white robe, the
      lightning magic effect is different, and the character
      is named Kujaku in the ending (which is still English).
      Outrun: The attract mode lacks sound, the startup screen
      says "push" (not "press") start button, and "(C) Sega
      1986, 1991" is printed in reverse order. The default
      options are KM/H and a different button selection (but
      can still be changed on the option screen).
      Quackshot: Game plays in Japanese.
      Raiden Trad: The "licensed to Sega" line is absent on
      both title screens, and the second title screen includes
      only the Japanese part instead of the non-Japanese part
      of the first one.
      Revenge of Shinobi: Title changes to Super Shinobi;
      credits show at the end.
      Rolling Thunder II: The Japanese version only works on a
      Japanese setting. The US version works either way (and
      isn't bilingual).
      Sonic the Hedgehog II: Tails is renamed to "Miles".
      Streets of Rage: Title screen changes to Bare Knuckle,
      and all text is in Japanese, including the introduction.
      The clock resets when you encounter the bosses.
      Streets of Rage II: Turns to Bare Knuckle II, and renames
      Skate to Sammy --_if_ you change the setting sometime
      after turning the machine on (to skip the lockout).
      Thunder Force II: Title screen has "MD" on it, and
      company name is "Tecnosoft".
      Thunder Force III: company's name is spelled "Tecnosoft".
      *Thunder Storm FX (CD): Turns to Cobra Command in US mode.
      Truxton: Japanese title is Tatsujin.
      Twin Hawk: Different title screen with Kanji.
      *Wrestle War: The wrestler is blond on a Genesis and
      black-haired on a MD.

      * Information from testing a Japanese game
   Can I add a territory switch and/or 50Hz/60Hz switch to my Genesis/Mega
   Drive 2?

      Yes, although the territory switch will be a bit more difficult than
      with the Genesis 1.  
      A document (with pictures that can't be duplicated here) on modifying 
      your Genesis 2 to add a 50Hz/60Hz switch is available at Sega Xtreme:
      A document (with yet more pretty pictures) on adding a territory
      switch to a Genesis 2 is available on Mike Gordon's site:

VI. Sega CD

From the Sega CD FAQ by Barry Cantin:

     Q:  Is it possible to play foreign CDs on my Sega CD/Mega CD?
     A:  Yes, but...

  If you insert a foreign CD into your Sega CD (remember, there are three
  nationalities of Sega CDs here: European, Japanese, and U.S.), you will
  not be able to load it.  The reason for this is that a "nationality"
  lockout code is on each Sega CD and Mega CD unit.  This assures
  (without outside help) that a particular CD will only be playable on
  its particular system.
     There is a way around this lock-out code.  There are cartridges
  available that plug directly into the Genesis slot that allow foreign
  CDs to be used by any system.

  [The Lockout Chip]

  The Sega CD unit had a specially designed BIOS chip/security program
  that prevented the unit from reading CD games intended for other
  markets (US, Japanese, European), such as Japanese or European CDs on a
  U.S. machine, and vice-versa.  This Lockout chip or BIOS information
  instructed the CD unit to read the CD and look for a certain
  file/security identifier that indicated that the CD was authorized for
  use on the system.

  To work around this, the folks at Datel designed the Pro CD-X and
  Pro CD-X Plus.

  Pro CD-X (and Pro CD-X Plus)

  This is a special cartridge that plugs into the Genesis in the cart
  slot and overrides the security commands of the Sega CD.  This allows
  you to  play any Sega CD or Mega CD title on any Sega CD or Mega CD
  system of a different origin.  However, it wasn't 100% effective - not
  all games were compatible with this unit, making its appeal very

  During Sega's redesign of the Genesis and CD system, they improved the
  Bios to prevent this cartridge from working.


     This cartridge looks like a regular Genesis cartridge and has better
     success with compatibility than its predecessors.  When the Sega CD
     is powered up with this cart in place, it's possible to run the
     Sega CD via the options screen (select "CD-ROM").  The reset
     button does NOT open the Sega CD tray (first model), you have to
     do that via the options screen as well.

  CD+PLUS does not work with the 32X installed.

     Japanese CDs known to work successfully with CD+PLUS:
       F-1 Circus CD
       Final Fight CD
       Heavenly Symphony
       Prince of Persia
       Sega Classics Arcade Collection (4-in-1)
       Silky Lip
       Sol Feace
       Super League CD
       Thunder Storm

     Known NOT to work with CD+PLUS:
       Black Hole Assault
       Heavy Nova

     Known NOT to work with Pro CD-X:
       Ranma 1/2

  Secondary security lockout Bypass -
     This is the option to using one of the above carts.  It is possible
     to build your own switch onto the back of the Sega CD.  It requires
     rewiring two transistors, indicating US or Japan (no idea how
     European Sega CDs would work with this).  No details are available
     in this FAQ.
VII. Third-party Genesis/Sega CD consoles

   JVC X'Eye/Wondermega
   From The Scribe:
    "- Both of JVC's consoles have rectangular cartridge ports with NO
       tabs. No adaptor is needed to fit Jap/Euro MegaDrive carts - they work
       as described in the FAQ. For example, I tried four different well-
       known Jap carts (the only ones I had) - Nadia no Fushugi no Umi, Madoh
       Monogatari, Jantei Monogatari, and Phantasy Star MD - and all four ran
       on my X'Eye with nary a hitch. I also ran the PAL version of Barkley:
       Shut Up and Jam with no problem.
     - There is a country protection cart port hack for the JVC X'Eye by
       Flavio that I posted here a while back. Dunno if it works, though. I
       don't have any hardware hack for the Sega CD side of the system.
     - Both of JVC's consoles have their own unique BIOS which does not
       work with any of the Sega CD converter carts, or so I'm told. They
       won't work with the Datel Action Replay Pro CD-X, that's for sure - it
       says that the system's BIOS version isn't supported."
   Pioneer LaserActive
   From The Scribe: 

    "- Pioneer's MegaDrive module is J/NTSC. Its cart port is square, like the
       WonderMega - NO tabs. When installed, the system functions exactly as a
       combination Japanese MegaDrive/Mega CD would under similar
       circumstances. I have actually had hands-on experience with a unit
       configured like this and was throwing older U.S. Genesis carts in and
       out of the cart port without any apparent problem."

VIII.  Appendix

  Who made these Game Genie codes?  And how?

    I did.  I can't take credit for originally hacking the territory
    protection out of the games; that goes to the dumpers/hackers/scenesters
    originally responsible for dumping and hacking these games way back when
    (Jarre and TSD are among them).  What I did was to compare the correct
    ROM dumps of the games with the protection in place with the dumps of
    the hacked versions, find where the program code was changed to bypass
    the protection, and convert the hex addresses of these modifications
    into Game Genie codes.  In the process I gained some understanding of
    how the protection was implemented by the programmers of these games,
    knowledge I plan to use to find codes for games that have not yet been
    hacked to my knowledge, such as Super Street Fighter II JPN, Gunstar
    Heroes JPN, Mega Man: The Wily Wars EUR, Vampire Killer, and so on.

IX. Thanks

   Major mad props go out to:

     Ken Arromdee (, for the* FAQ.
     Barry Cantin (, for his excellent Sega Genesis and
       Sega CD FAQs.
     Stéphane Dallongeville (, for Gens,
     Dave (, for DGen,
     Jarre, TSD, and all the other hackers whose ASM mods bypassed
       territory  protection on many Megadrive games.
     Galen Tatsuo Komatsu (, for corrections 
       and additions on the Datel cartridges
     Merlyn LeRoy (, for figuring out the Genesis Game
       Genie code format.
     Motorola, for the entire 68000 series of processors and their
       excellent MC68000 manual.
     The Scribe, for information on the X'Eye and LaserActive
     Sega, for making such an awesome console.
     Bart Trzynadlowski (, for GROM.