Homebrew Debug mod crashing on console but not Dolphin

[Yacker]

Technically, it's a gamecube game being ran through Nintendont, but I digress. I've been working on, with a team, a pretty major mod for a game. And while it totally works fine on Dolphin, one small feature causes it to crash on console, and I am completely perplexed as to why. Would there be any way to at least get something like a crash log/stack trace of the crash or anything?

 

[tech3475]

Presuming the engine isn’t being modified.

I would first try the game through MIOS if you can, i.e. check if Nintendon’t is at fault.

Does the game contain a native ‘debug mode’ of some kind which displays information on screen? I know some games can have it activated via action replay, etc.

Maybe if you have access to a USB Gecko you can use Nintendont’s WiiRD debugger.

Alternatively, maybe check Dolphin’s logs to see if it’s detecting an issue but able to handle the error.

 

[Yacker]

Well, I actually can't run through MIOS because I only have access to a Wii U.
Unfortunately, we have no debug mode known of.
No USB Gecko.
Dolphin's log isn't reporting anything out of the ordinary, either.

 

[Yacker]

Update on another attempted method:
Wrote a crash handler that wrote a crash log to the memory card. Again, works in Dolphin, Nintendont is a black box so I don't know if it's just not executing, or if it's just not updating the memory card file. Either way, I am frustrated.

 

[N7Kopper]

Update on another attempted method:
Wrote a crash handler that wrote a crash log to the memory card. Again, works in Dolphin, Nintendont is a black box so I don't know if it's just not executing, or if it's just not updating the memory card file. Either way, I am frustrated.

I believe that Nintendont is actually open source, not black box. Might be obtuse to people not used to its codebase, however.

A debugging situation where you have no access to original hardware or official backwards compatibility isn't exactly ideal. No amount of in-game crash handlers will help if your forward compatibility layer (shim? Whatever.) is crashing.

Likely isn't any way around getting a Wii and a USB Gecko, unless Dolphin is so accurate that it can emulate Nintendont reliably now.

 

[newo]

Dolphin will often let some things slide which end up being fatal on a real wii. If you can isolate the thing thats crashing it you might be able to determine if its a memory issue by running it separately or a violation of a rule by stepping through it.