Custom EBOOT help (devhook + gbSP related) - PSP3D.com - Sony PlayStation Portable News, Homebrew, Hacks, Reviews, Videos, Mods, Forums

bboy_sonik · #1 (**permalink**) 08-31-2006, 05:15 AM

Hi guys

I have a quick question, i'd be real happy if someone had an answer for me.

Now i don't know too much about pure programming, but im a batch monkey and im huge on things like resource hacking and such.

What i like to do on my PSP is, running iRShell instead of the XMB, i have all my homebrew in there. I have hacked devhook loaders, each with their own EBOOT graphics (corresponding to the ISO) and INI file is seperate to each one (so they all retain their own settings, enabling each one to autorun).

My questions are -

1. Is there a way to modify the DevHook screen where it says "Hit O to change settings", possibly into a picture?

2. When the ISO loads, it obviously shows the SCE intro, then the XMB load movie. Can i stop this? Also, a way to, when i press HOME in my game, to return to iRshell rather than the 2.71 XMB? I already have the HOME+START returns to iRShell from the 2.71 XMB, but just wondering if there is an easier way. What i'm really asking is, where can i find information on editing dumped firmwares (the 2.71 fw used in my devhook)? If it is even possible... is there an easy way? Has anyone ever done anything like this before?

3. (Final question). I use gbSP (the GBA emulator) which is great right now. But it has no configuration, just a ROM list, then when in the game hold triangle and press up or down to change frameskip. Is there an easy way to make the gbSP emulator auto-load a ROM so i can make seperate eboots for each GBA game i have on my PSP? Or would i be best off contacting the developer of gbSP here?

As i said, i don't know if anyone has done anything like this before, but i've tried searching and found nothing like it, which is strange - i don't know why nobody has done something like this before...

Any advice or comments is much appreciated.

Cheers.

chriscooke109 · #2 (**permalink**) 08-31-2006, 12:40 PM

1. Edit DevHook source code
2. Edit DevHook source code
3. Don't have time to read

pj1115 · #3 (**permalink**) 08-31-2006, 01:08 PM

I'll help you.

1. If you have a decent knowledge of C, you can remove the ‘Printf’ function in there and add image libraries (if they're not already there), and instead display an image.
However if you use GUIdevhook then you can change all the images.

2. I don't think so (Without extensive C and firmware knowledge); Again, I'm not sure, but it might be achieved with even more knowledge.
There isn't really documentation. What you can do is create/modify PRX's to stop them, but you can't really MODIFY a firmware. There might be a way just to modify the loader to skip the SCE logo, but I don't really have an interest in doing that.

3. If you can figure out how to compile GPSP (quite hard), and modify the source to do so, it's all yours.

(Just make sure you don't release the code without the authors knowledge, as it states in the readme.

Any more questions? That's what we're here for!

bboy_sonik · #4 (**permalink**) 09-02-2006, 12:53 AM

thanks pj1115

Looks like i might start learning C then :P

I know there is a way to stop the SCE logo on 1.5 (i have that on mine), but i wouldnt have a clue where to start with 2.71. I don't even know what a PRX is, i havn't dived that deep into the PSP development scene yet. Any tips on where i should start some research on these PRX files?

Thanks for your help.

jcoolkatzerg · #5 (**permalink**) 09-02-2006, 03:12 AM

PRX files are like dll's on the computer (this is not exactly true, but close enough for someone just starting out). As for getting rid of the SCE logo, I think that X-Flash has a mode where it will apply it's functions to an emulated firmware in dev-hook (Don't hold me to this, I only loosely remebering it doing this). Good luck learning C, we need more of those people here.

bboy_sonik · #6 (**permalink**) 09-03-2006, 09:44 AM

Fair enough on the reference to the DLL's, i guess PRX's are just like a data library - they arn't HAL-like modules are they? Well, HAL (Hardware abstraction layer) is a WINDOWS term, i think the generic term is a DAEMON module - they are pieces of data that link software to hardware... in my previous days of DreamCast homebrew production it had files like that and that was the trick for tru-school modding.... Anyway, i might look into it...

Quote:

Originally Posted by jcoolkatzerg

As for getting rid of the SCE logo, I think that X-Flash has a mode...

Yeah i think i remember seeing something like that before, if not X-Flash it might have been FlashMod...

Quote:

Originally Posted by jcoolkatzerg

Good luck learning C, we need more of those people here.

Haha thanks. I touched the tip of the iceburg of C++ in my previous days, can you program in C AND C++ for PSP? Ah don't worry about answering that, i'll find out soon enough

Cheers guys. This thread seems to be an open and shut case (or something).