There are two possible scenarios, and they're just a speculation. Take them as a reference:
- The codes you had copied are not really correct.
- The codes you had copied are for specific versions.
For a test to see if your game "
supports" Action Replay DS, I want you to do this:
1. Open up the cheats menu in No$gba.
2. Add a new cheat, and delete the rest.
3. For the codes, paste this:
Code:
921B8AFC 00000001
DA000000 021A0BF2
D7000000 021A0BF0
D2000000 00000000
And for the description, it's infinite HP.
4. Choose Action Replay DS.
5. Press OK.
6. Test to see if it really has infinite HP, then read either A or B.
A: If it does, then copy the codes and google search for that. It will come up with many similar results. All of the codes in those results will work with your game. The codes I gave you doesn't need any Master Codes.
B: If it doesn't work, then you should start finding out which one is the right code that matches your game. From this point on, you need to search results, like "Mega Man Star Force 2 Ninja cheat codes" and do your own experiments. I can't guarantee that codes I find will always work for your game, so you have to be prepared.
(The word "
supports" isn't used in a good way...I think.)