Homebrew Homebrew Development

[st4rk]

I tried to draw_rect over the area where I was displaying the score in order to update it too, but that didn't work either. The only way the score isn't a bunch rewritten pixels is when you start a new game. And thanks for the pause loop, I'll try to fix that today.

The score now updates correctly, I had to write a bigger rectangle over the score. Also I'm very interested in running emulators on the 3DS, any chance we can get the source for GB and NES emulators? Do these only run in ARM11?

GB/NES work on ARM9, but very slow, i think if you want dev emulators in bare-metal, you must use ARM11.

 

[dubbz82]

Another potential benefit is the ability to run games in their native resolution. I don't know if an emulator coded for the ds is capable of outputting at 256x240 (NES's native resolution) as the ds's screen is only capable of 256x192....if it is, it would be out of spec, and probably break on standard ds hardware...3ds screens are both capable of 240 pixel height....stuff wouldn't have to be scaled (up or down) to display at native resolution.

 

[seagal112]

any chance we can get the source for GB and NES emulators? Do these only run in ARM11?

here you have some sources... gb emus and space invaders.

 

[st4rk]

If you wanna, i can share my source code from emulator in bare-metal, i will upload in github tomorrow

 

[mocalacace]

here you have some sources... gb emus and space invaders.

They cannot be downloaded anymore https://dl.dropboxusercontent.com/u/72398546/emulators_public.rar -- Not Found

I did manage to find your giibii source in another post though.

 

[seagal112]

They cannot be downloaded anymore https://dl.dropboxusercontent.com/u/72398546/emulators_public.rar -- Not Found

I did manage to find your giibii source in another post though.

my fault, I didnt post the link

https://www.mediafire.com/folder/gfji2tf89n5we/3ds

 

[Hansausage]

Hi, new here so sorry if I sound like a complete newbie.
Is there an official 3DS homebrew respritory? If not I was considering creating one but after I get used to some of the 3DS homebrew community.
Can someone tell me how to get started on executing homebrew on my 3DS? Is there an official hack? And what firmware version must I have? I am aware that there is no "homebrew channel" so this is why I am asking if there is a semi-stable hack so that I can execute custom code. Thanks

 

[st4rk]

Hi, new here so sorry if I sound like a complete newbie.
Is there an official 3DS homebrew respritory? If not I was considering creating one but after I get used to some of the 3DS homebrew community.
Can someone tell me how to get started on executing homebrew on my 3DS? Is there an official hack? And what firmware version must I have? I am aware that there is no "homebrew channel" so this is why I am asking if there is a semi-stable hack so that I can execute custom code. Thanks

You will need a 3DS with FW 4.1 ~~ 4.5
A Flashcard of DS to execute ROPLoader
Knowledge in C(and C-LowLevel)/Assembly(ARM)
Python2.7(to execute the build.py).

All code work on bare-metal, so you can't use things like ctrulib, 3DS API Sevices, yet.

Good Luck !

 

[Hansausage]

Welp, I didn't necessarily luck out...
Will any DS flashcard work? R4? Or do i need a 3DS card like gateway?

 

[st4rk]

Welp, I didn't necessarily luck out...
Will any DS flashcard work? R4? Or do i need a 3DS card like gateway?

Just a DS Flashcard, Gateway Blue Card, R4, working on 3DS, it's fine !

After it, read in topic about the ROPLoader, you will need it to do the DS Profile exploit, after it, you can use the Launcher.dat with your code.

 

[Cyan]

I tried to make a homebrew list on wikitemp when the first two homebrew were released, but didn't have time to update it and nobody else did it either.
http://wiki.gbatemp.net/wiki/Category:3DS_Homebrew

The wiki could be used to list all homebrew, the format (launcher.dat or .3ds), informations how to use, different versions, updates, etc.
I wish I had more time to do all I want and maintain it correctly.

 

[Ryft]

The Filetrip page has saves and a few other download categories including some homebrew applications.

http://filetrip.net/3ds-downloads/

 

[Areseru]

I would like to write an homebrew to extract savegames (even if they're crypted) but dunno if the stdio/lib/etc. would work the way I normally use on a typical source. I mean, I've never gone so much "low-level" so idk if additional "moves" are requested to achieve this goal...

 

[jocopoco]

my fault, I didnt post the link

https://www.mediafire.com/folder/gfji2tf89n5we/3ds

I cant find any rom files, like rom_e.h and rom_f.h

 

[mocalacace]

I cant find any rom files, like rom_e.h and rom_f.h

You need to download your own roms and use bin2c to convert it to the C-header file

Whenever I try to change the rom it compiles with the warnings and always gives me Links Awakening.
--Finally managed to get it to compile with pokemon_gb, took way too many tries.

 

[Vaati Dark-Hylian]

Hey everyone, first time here so sorry if I seem like a noob.

I just wanted to let you all know that I was going through some files on my 3DS SD card and found some text files all coded in Japanese. I'm not sure if they would help with homebrew developement But if you want them just let me know and ill post them.

 

[jocopoco]

Im testing your build on my emu and I have problems with 8080's 0x38 opcode. Can u send me your rom_*.h files, please? I want find the bug.

 

[mocalacace]

Okay, so I experimented a little with the PXI calls and no luck. Pretty sure my requests were formatted correctly but it never returned from the call, unless my request were wrong in which case it returned an error. Did you actually get those PXI calls in 3DS_Arm9_Shenanigans to work, Kane49 ?

Oh, and while I have your attention Kane, please please give me some hints on how to use your file-writing code, as it obviously works in your FCRAM dumper.

Sorry for double post/nagging, but I'm getting really frustrated here. I have the cake but I can't eat it because of one little stupid thing.

EDIT:
CRAP

The FAT code in 3DS_Homebrew_stuff is working!!! Wohooo! I guess it just was the other projects it wasn't stable in? I have not tested writing yet, but it should work... I hope. Thanks for sharing your code Kane49, it's very helpful and I would be nowhere without it. Just wish it was a little more... User friendly.

Did you get it working with nonSDHC card, I'm working with the 2gb card that came with my 3ds and can't get it to mount.

 

[Jiro2]

Most emulators are open source. The only reason I can think of to port a NES emulator is to add 3D to it. nesDS is a great emulator that doesn't really need a vanilla port. I haven't tried GameYob so I can't say what benefit a 3DS port would have besides 3D.

The NES has 256x240 resolution. No matter how good the emulator on the DS gets, the DS only has 256x192 resolution, unless you want to remove lines or show it on two screens. The 3DS has 320x240, which is enough to show NES resolution on one screen.

Also, I'd like to see someone port a Master System emulator, since the Master System did have 3D.

 

[Cjuub]

Did you get it working with nonSDHC card, I'm working with the 2gb card that came with my 3ds and can't get it to mount.

Yes, I did get it to work, but file writing was only implemented with the large FATFS lib (not petit FATFS), if you only want to read files I would suggest you use petit instead. I used the code in 3DS_Homebrew_stuff, you need to use the sdmmc code and everything from that folder, it should work with non-sdhc cards. Note that kanes sdmmc driver code is different in other project folders, so mixing them is usually a no-no.

Also note that the FATFS lib makes your binary very large and will most likely make your code not work, atleast that was the case for me. I could only get it to write to a file with an extremely small main-program. I tried various size optimization options at compile time but they all broke FATFS for some reason.