GBA Training Tutorial

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Category: TutorialsTraining
Submitted by: musashi9
Date: 2015-09-16 23:59
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2015-09-17 15:04

1. musashi9 writes

Great tutorial I always wanted to know how to do this. Does one do the same when wanting to attach an intro? find space then insert then patch a jmp to that area?
Reply to comment #1
2015-09-17 15:55

2. mr.spiv writes

Something like that.. at least I did so.. or well just put it at the end of game ROM since there usually was space. Patched the original start of game to jump into my trainer/intro. The intro then moved the trainer options into unused place in RAM. bla bla.. ;)
2015-09-17 16:58

3. WayneK writes

This is pretty bad, honestly :P Of course the methods are right, but who hooks a routine that obliterates the contents of R1 as soon as it returns by writing to R4?! And that is after saving it on the stack, then POPing it and overwriting it - so why save it in the first place? Also completely ignores the fact that if you can't write a trainermenu or find the locations/code to patch, then this is of no use to you. If you *can* do that, then hooking the actual options is by far the easiest part of the process!
Reply to comment #3
2015-09-18 11:48

4. Phantasm writes

also if you want a half decent trainer which includes more advanced stuff (like level skip for example) you should have no problems with the basics. Debugging/searching through the code to find out how and where to trigger a level skip makes this stuff look like a walk in the park.
2015-10-04 06:50

5. Icarus writes

I d/l this off a ftp-site once, don't remember which site it was but at least a pdx-site :-) Too bad that I wasn't involved in GBA. Seems there was a really cool and active scene on this machine which somehow died on Nintendo DS :-(