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Author Topic: PSX hacking.  (Read 2 times)
Vanya
Guest
« on: July 08, 2008, 10:33:23 am »
I was wondering if there are any good resources for hacking PSX games.
Specifically I'd like to remove certain restrictions on the Mime job in Final Fantasy Tactics. I'm very much familiar with hex editing,  some basic ASM, and with the existing FFT specific editors.

I'm convinced that what I'm looking for is a few snippets of code that the game uses to check whether a unit is using the mime job, but I don't know how to go about finding them. Help, please?
Gemini
Guest
« Reply #1 on: July 08, 2008, 10:35:36 am »
A debugger is what you are looking for.
Vanya
Guest
« Reply #2 on: July 08, 2008, 04:24:52 pm »
Cool. So I learn to use one of these, and I should be able to trace the addresses in the ISO that are being accessed? Are they self explanatory or would you recommend a tutorial/FAQ?
Gemini
Guest
« Reply #3 on: July 08, 2008, 04:47:45 pm »
Forget about tracing for all sort of changes. It's almost useless on the Playstation. Debuggers work a lot better and work fine in any situation, especially if you know what and where to put a breakpoint.
Vanya
Guest
« Reply #4 on: July 08, 2008, 08:56:32 pm »
OK.
So for example, if I want to find the code that prevents the Mime job from equipping items I should put a break point like right before I enter the equipment screen?
Gemini
Guest
« Reply #5 on: July 08, 2008, 08:58:38 pm »
Nope, you put a read breakpoint on the item structures (which you can probably find documented in the FFT editor), and see how the game decides to skip them when it creates an item list for that job.
curiousfox
Guest
« Reply #6 on: July 09, 2008, 06:58:22 am »
read the post at http://www.romhacking.net/forum/index.php/topic,5353.msg95030.html#msg95030

I went to the author of  munge explorer and have requested support for bin, instead of the iso support only.
why I hate to lose the subchannel by converting psx cd image from mdf or bin to iso.
« Last Edit: July 09, 2008, 08:41:35 am by curiousfox »
I.S.T.
Guest
« Reply #7 on: July 09, 2008, 12:56:05 pm »
Completely off topic. Take that up in a different thread.
Vanya
Guest
« Reply #8 on: July 10, 2008, 10:07:49 am »
Thanks for the advise guys, i appreciate it! If I have success I'll post back here. Grin
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