Xuom2: Created page with "== 1G1R regions == '''1G1R''' means "one game, one ROM": a user who wants only one version of each game picks it with a ROM manager (for example clrmamepro), using the Parent/Clone (P/C) DAT. The field '''1G1R regions''' of an archive says: ''"in this P/C group, this archive is the preferred version for these regions"''. Example: in the group of ''Yoshi Touch & Go'': * ''Yoshi Touch & Go (Europe)'' → 1G1R regions: `Europe` * ''Yoshi Touch & Go (USA)'' →..."

2026-11-07T19:43:47Z

Created page with "== 1G1R regions == '''1G1R''' means "one game, one ROM": a user who wants only one version of each game picks it with a ROM manager (for example clrmamepro), using the Parent/Clone (P/C) DAT. The field '''1G1R regions''' of an archive says: ''"in this P/C group, this archive is the preferred version for these regions"''. Example: in the group of ''Yoshi Touch & Go'': * ''Yoshi Touch & Go (Europe)'' → 1G1R regions: <code>Europe</code> * ''Yoshi Touch & Go (USA)'' →..."

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== 1G1R regions ==

'''1G1R''' means "one game, one ROM": a user who wants only one version of each game picks it with a ROM manager (for example clrmamepro), using the Parent/Clone (P/C) DAT.

The field '''1G1R regions''' of an archive says: ''"in this P/C group, this archive is the preferred version for these regions"''.

Example: in the group of ''Yoshi Touch & Go'':
* ''Yoshi Touch & Go (Europe)'' → 1G1R regions: <code>Europe</code>
* ''Yoshi Touch & Go (USA)'' → 1G1R regions: <code>USA</code>
* ''Catch! Touch! Yoshi! (Japan)'' → 1G1R regions: <code>Japan</code>
* ''Yoshi Touch & Go (Europe) (Kiosk Demo)'' → empty

In the P/C DAT every region becomes one line inside the game:
<pre><release name="Yoshi Touch & Go (Europe) (En,Fr,De,Es,It)" region="EUR"/></pre>

=== How to fill it ===
* Use it only for archives in a P/C group (parent or clone). Archives without a group don't need it.
* Write region names, separated by commas: <code>USA, Europe</code>
* Use the names from the list below, with the same spelling and capitals (<code>usa</code> is refused).
* One region can be claimed by '''only one archive''' in the same group.
* Leave it empty when the archive is not the best choice for any region (demos, betas, bad dumps, alternative versions...).

You can set it in:
* the archive edit page and the submit page (field "1G1R regions")
* the P/C list upload: <code>0013 - Yoshi Touch & Go (Europe) (En,Fr,De,Es,It)|Europe</code>
* XML uploads: attribute <code>regions_1g1r="USA, Europe"</code>

=== Allowed regions ===
The code is what the P/C DAT writes. Since November 2026 the country codes follow the ISO 3166-1 standard (3 letters).

{| class="wikitable"
! Region !! Code !! Region !! Code !! Region !! Code
|-
| Argentina || ARG || Greece || GRC || Norway || NOR
|-
| Asia || ASI || Hong Kong || HKG || Peru || PER
|-
| Australia || AUS || Hungary || HUN || Poland || POL
|-
| Austria || AUT || India || IND || Portugal || PRT
|-
| Belgium || BEL || Italy || ITA || Romania || ROU
|-
| Brazil || BRA || Japan || JPN || Russia || RUS
|-
| Bulgaria || BGR || Korea || KOR || Saudi Arabia || SAU
|-
| Canada || CAN || Latin America || LAM || Scandinavia || SCA
|-
| China || CHN || Mexico || MEX || Spain || ESP
|-
| Czechia || CZE || Middle East || MEA || Sweden || SWE
|-
| Denmark || DNK || Netherlands || NLD || Taiwan || TWN
|-
| Europe || EUR || New Zealand || NZL || UAE || ARE
|-
| Finland || FIN || || || United Kingdom || GBR
|-
| France || FRA || || || USA || USA
|-
| Germany || DEU || || || ||
|}

'''World''' has no code and can't be used: for a "(World)" archive write the real regions, for example <code>Japan, USA, Europe</code>.

=== When two archives claim the same region ===
If two or more archives of a group claim the same region, only one should keep it. These rules decide, in this order: the first rule that makes a difference wins.

# '''Good dump''' beats bad dump.
# '''Final release''' beats Beta, Proto, Demo...
# '''Official''' beats unlicensed (Unl, Pirate...).
# '''Own region''': the archive whose own region contains the claimed region wins (''(Europe)'' beats ''(United Kingdom)'' for Europe). ''(World)'' counts as Japan, USA and Europe.
# '''Original''' beats re-releases (archives with extra text like ''(Virtual Console)'').
# '''Not Alt''' beats ''(Alt)''.
# '''Newest version''' wins (''(Rev 2)'' beats ''(Rev 1)'', ''(v1.1)'' beats ''(v1.0)'').
# '''Languages''': compared one by one in the order of the language list; ''(En,Fr,De)'' beats ''(En,Es,It)''.
# '''Lowest archive number''' wins (only to break a tie).

In November 2026 these rules were applied once to all the groups with a conflict (log comment: "1G1R region conflict in the P/C group"). If a result looks wrong, fix it by hand: a datter's choice is always better than a rule.

=== A bit of history ===
* The field was born for '''GoodMerge''', a tool that packed ROM sets into one 7z archive per P/C group. DAT-o-MATIC exported '''XMDB''' files for it.
* The field was called '''RegParent''' ("regional parent") and its values looked like <code>(USA PARENT) (EUR PARENT)</code>: they told GoodMerge which name to give the 7z archive for each user's region.
* The XMDB export was removed around 2022, but the field stayed: since then it is used only for the <code><release></code> lines of the P/C DAT.
* In November 2026 the field was renamed '''1G1R regions''', the values became plain region names (<code>USA, Europe</code>), the codes switched to ISO, and the values on archives without a P/C group were removed. The old <code>(USA PARENT)</code> format is no longer accepted.

1G1R regions - Revision history