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- Joined: 05 Nov 2014
- Posts: 435
- Location: Auckland - NZ
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Games with region detection
Posted: Thu Aug 26, 2021 10:52 am
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Is there a list of MkIII/master system games that are known to use region detection?
Im looking at building something that sits between a game cart and the console and fakes the region by changing the writes to port $3f. My thought was to change it "on the fly", as reads from the cart actually happen, and patch it from port $3f to port $dc as writes to $c0 - $ff have no effect. That should then prevent the states of TH changing and in effect allowing the region to be changed.
This will break support for sports pad and paddle controllers though so i was thinking of being able to turn it off somehow after region detection is complete.
I wanted to have a look at some games and see what they actually do and see if i can get something to work.
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- Site Admin
- Joined: 19 Oct 1999
- Posts: 14745
- Location: London
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Posted: Thu Aug 26, 2021 1:34 pm
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Wonder Boy III shows a different title screen between regions. We don’t have a good list of similar games.
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- Joined: 11 Mar 2018
- Posts: 66
- Location: New Zealand
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Posted: Thu Aug 26, 2021 10:45 pm
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Quite a few games do region detection to decide whether or not to show a "Mark III" title screen before the game starts.
I don't have a list, but the original Wonder Boy also displays a different title screen.
'Super Wonder Boy' in Japan
'Wonder Boy' everywhere else
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- Joined: 05 Nov 2014
- Posts: 435
- Location: Auckland - NZ
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Posted: Fri Aug 27, 2021 12:05 am
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Thanks for the replys. Thinking about this a bit more.. the paddle controller didnt need TH to be an output and neither did the JP sports pad, as the MkIII wasnt able to do so... so i probably dont need to actually worry about that at all. On a side note, can the JP master system output on TH?
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- Joined: 01 Feb 2014
- Posts: 878
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Posted: Fri Aug 27, 2021 12:24 pm
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Power Strike does this and becomes Aleste when played on a japanese System.
If you count homebrew, my own games Flight of Pigarus, Bara Burū and Sunny the Mermaid do this, too. ;)
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- Joined: 01 Jul 2015
- Posts: 152
- Location: Berlin
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Posted: Thu Sep 09, 2021 1:10 pm
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Also Aztec Adventure will show a different title screen (Nazca '88) on Japanese consoles.
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- Joined: 22 Feb 2005
- Posts: 173
- Location: Caen, France
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Posted: Fri Sep 10, 2021 2:19 pm
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You can add Masters Golf/Great Golf, I guess Zillion ?
This could be a new Tag ... ?
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