devkitPro

One way or another it seems to be working.
Unfortunately touchscreen and music stopped working, so I believe there's some problem with ARM7 processor. Any hint on how NitroFS could have affected this?

So far I found out myself that it seems to me that:
- up to 61K+ files/directory should be supported
- any firmware supporting arguments (argc/argv) should work
- DeSmuME 0.9.10 supports NitroFS.

Is there something important I'm still missing?

I'm wondering a few things about NitroFS (which I never used): - How many files/folders can I have inside the .nds file? (I need thousands...) - What's the maximum size of the .nds file? (I need up to 128MB) - Should I update ndstool to latest version to generate the .nds file that contains the file...

AFAIR a VRAM bank can be assigned either to BGs or to sprites, so I guess it's not possible

It's very very old, it comes from the time libnds wasn't even supporting the FIFO system between ARM9 and ARM7 :shock: I tried mixing up some parts of that dkA with some a little bit newer, looked like it was working, the linker didn't went into ICE... but complained something about crt0 not liking ...

I have a very very old project that I'd like to recompile. Since it's very old, it won't compile with current dkA/libnds, and to make it compatible would require to rewrite from scratch a lot of code, and that's a thing I would never do. It just compiles fine with the old setup, until I try to activ...

Yeah, I was saying that it's very hard you really need to run a different ARM7 program than what's supplied with dkA/libnds... nevertheless you can have your own ARM7 program if you need it (ARM7 mp3 replay? libXM7? ...) using the so called 'combined' template.

what about modifying it? It shouldn't be too hard... edit: in the source code, there's this mme_get_channel_index which seems to me to receive the handler number in r0 and output the channel number on r3... so you just need to write a small wrapper to call this and check if the resulting value is !=...

The devkit provides a default program for the ARM7, and you can use that... you probably won't need to write a program for the ARM7 processor.
But, if you wish, it's possible... take a look into examples/nds/template, there's a 'combined' one which is for that.

Try with BgSize_T_256x256 instead of BgSize_B16_256x256