Gecko Code Manager is a Windows application for managing codes and creating the GCT File. There are two versions included in the download. Version 1.2 is a little more updated but functionally they both do the same thing. When creating a GCT File it can be exported straight to an SD Card. Version 1.2 however puts the file in the wrong location where as the original puts it in the correct location. Version 1.2 however keeps track of how many lines are being used with all the codes you currently have turned on. Which is useful as the limit is 425 lines so it can make it easy to tell if you have to many codes.

Click here to download the Code Manager.

Within the Gecko Code Manager you can create and add codes. From there you can save them to at text file. By doing it within the application itself it will format the codes in the text file on it's own. However it's generally easier to just create the text file and edit it with a text editor.

File Format

The Code Manager reads plain text (.txt) files for the code list and follows it's own format. Each of the following parts needs be separated by a blank line.

Header

<Game ID>	The unique ID for the game
<Game Name>	The name of the game

Section

<Name>

The name of the section

Code (turned off)

<Code Name>	The name of the code
<XXXXXXXX> <YYYYYYYY>	A code line
<Comment>	A comment for the code

Code (turned on)

<Code Name>	The name of the code
* <XXXXXXXX> <YYYYYYYY>	A code line
<Comment>	A comment for the code

Comment

<Comment Title>	The name of the comment
<Comment>	The content for the comment

<Game ID> is the a unique ID for the specific game. Virtual Console Channels only use four characters where as Gamecube games use six. A quirk of the Code Manager is that the Game ID in the file needs to be six characters! Since Virtual Console Channels only use four just add "01" onto the end. When you export the GCT File you can either name the file yourself or let it use the Game ID. If you use the Game ID you will need to remove the last two characters.
<Game Name> is the name of the game. This can be anything you want.
<Name> is the name of the section. This can be anything you want. These can be used to separate codes into different sections.
<Code Name> is the name of the code. This can be anything you want.
<XXXXXXXX> <YYYYYYYY> is a code line. There can be multiple code lines per code.
* <XXXXXXXX> <YYYYYYYY> is a code line. There can be multiple code lines per code. The "* " before the code line tells the Code Manager you want this code on so it will by default be turned on when you load the file.
<Comment> is a comment for the code. This can be anything you want. Optionally you can import a Comment by using the following:
<Comment Title> is the name of the comment. This can be anything you want.
<Comment> is the content for the comment. This can be anything you want.

Example File

The following is an example of a file for the English version of Majora's Mask with a few codes and comments in it.

NARE01
The Legend of Zelda: Majora's Mask

Infomation
Gecko Codes for Majora's Mask NTSC-U with the Gamecube Controller as the controller activator.

Link

Moon Jump
* 29303CA2 00FF0300
* 28F1B5B0 FFF70008
* 0531CEF8 40C80000
* E0000000 80008000
D-Up (Inclusive)
Only during gameplay.

Super Speed
29303CA2 00FF0300
28F1B5B0 00000001
0531D960 41B00000
E0000000 80008000
D-Left
4x normal walking speed.
Only during gameplay.

Infinite

Small Keys
0110C81A 00030001

Explosives
* 28F1B5B0 00000C00
* CC000000 00000000
* 0310C7F6 00001414
* 0110C7FC 00000001
* E0000000 80008000
X + Y On/Off
Default to Infinite.

What this file will look like when you open it in the Code Manager:

Information
Link
☑ Moon Jump
☐ Super Speed
Infinite
☐ Small Keys
☑ Explosives

A Comment
A Section, These codes apply directly to Link
A Cheat, this is turned on by default
A Cheat, this is not turned on by default
A Section, These codes have to do with infinite quantities
A Cheat, this is not turned on by default
A Cheat, this is not turned on by default