Dekopon - (Mostly) Fullspeed 3DS Emulation on Nintendo Switch

[Neoname]

New hotfix just released to fix the introduced crashing issue: https://github.com/PalindromicBreadLoaf/dekopon/releases/tag/v1.2.2

Also includes a new screen layout for those interested.

Post automatically merged: Jul 22, 2026

If you would be willing, could you replicate this crash on the latest release and send me both the dekopon.log file and the atmosphere crash dump?

This should hopefully be resolved now.

You have to use application mode to launch anything. The ~500MBs of RAM and on JIT access for applets just means nothing at all is going to work. What do you mean it got stuck at 1307?

Tested MGS 3 again on this build, performance without right eye enabled is insanely better, but the game still crashes when you fire a gun.

 

[PalindromicBreadLoaf]

After reopening the game. It compiled the shader cache. Originally it didn't even do this upon opening the first time. Then the shader cache got stuck at #1307. I waited 5 mins before closing and starting again.

How do you know the shader cache got stuck on #1307? There's no way to tell what shader it's on or it's status because there's no progress bar when loading a game, and I don't believe the log shows anything besides that a game was started. Also, assuming it doesn't happen again, I can't say I've ever had such an issue, nor has it ever been reported by anyone else, I can't diagnose it. I'm hoping it was just a one-time fluke?

I know you have your hands full but would adding box art be possible?

Like in the menu instead of the 3DS icons?

Crash

What caused the crash and what settings do you have enabled?

Tested MGS 3 again on this build, performance without right eye enabled is insanely better, but the game still crashes when you fire a gun.

Has it always crashed when firing a gun or is this a new thing introduced with one of my updates?

 

[NowisX]

Is it possible to add an additional display option where the overlay appears at the top of the screen? Placing it at the bottom often blocks the subtitles.
It would also be great to have an option to manually adjust the size and position of the secondary screen.

 

[PalindromicBreadLoaf]

Is it possible to add an additional display option where the overlay appears at the top of the screen? Placing it at the bottom often blocks the subtitles.
It would also be great to have an option to manually adjust the size and position of the secondary screen.

View attachment 583152View attachment 583153View attachment 583154View attachment 583155

In the quick menu there should be options to do both of the things you are wanting to.

 

[NowisX]

In the quick menu there should be options to do both of the things you are wanting to.

Sorry, I hadn't read that option!! Thanks!!

 

[sai7234217]

How do you know the shader cache got stuck on #1307? There's no way to tell what shader it's on or it's status because there's no progress bar when loading a game, and I don't believe the log shows anything besides that a game was started. Also, assuming it doesn't happen again, I can't say I've ever had such an issue, nor has it ever been reported by anyone else, I can't diagnose it. I'm hoping it was just a one-time fluke?

Like in the menu instead of the 3DS icons?

What caused the crash and what settings do you have enabled?

Has it always crashed when firing a gun or is this a new thing introduced with one of my updates?

After reading the reply above, I disabled New 3DS mode,the game runs stably when using the compressed custom textures.

 

[tehrzky]

just wanted to share.

LoZcarina of Time Single Screen Mod+Custom Texture works.

 

[Lostbhoy]

Like in the menu instead of the 3DS icons?

Yeah!

 

[hellionz]

FE runs correctly?

 

[PalindromicBreadLoaf]

FE runs correctly?

It requires a hefty overclock during movies and cutscenes, but I believe during gameplay it works fine.

Yeah!

I can try, but no promises.

Also, as a note to anyone reading this, new3DS mode currently has a bug and shouldn't be used (not that you should be using it anyways).

 

[nitrozz]

View attachment 583171
View attachment 583172
just wanted to share.

LoZcarina of Time Single Screen Mod+Custom Texture works.

Can’t get to work put mod folder and nothing??? Help

 

[zebrone]

View attachment 583171
View attachment 583172
just wanted to share.

LoZcarina of Time Single Screen Mod+Custom Texture works.

how to put the mod? There are many files....

 

[deejay87]

The title ID of your release, mine is Europe

 

[tehrzky]

Can’t get to work put mod folder and nothing??? Help

how to put the mod? There are many files....

The title ID of your release, mine is Europe

how to load single screen mod on LoZ: OoT

load/mods/[titleid]
-exefs
-romfs
-exheader.bin

the "UI" folder goes to
load/textures/[titleid]

 

[deejay87]

how to load single screen mod on LoZ: OoT

load/mods/[titleid]
-exefs
-romfs
-exheader.bin

the "UI" folder goes to
load/textures/[titleid]

push on right stick
But if you really want play TLZ , ship of harkinian is the must to play
I have test to have 60p, but don't want

 

[nitrozz]

how to load single screen mod on LoZ: OoT

load/mods/[titleid]
-exefs
-romfs
-exheader.bin

the "UI" folder goes to
load/textures/[titleid]

I got it to run

 

[FanNintendo]

@PalindromicBreadLoaf - I have a request can you make bottom screen bigger as top screen while in vertical and set a gap between 2 screen because I like use FlipGrip handle

 

[PalindromicBreadLoaf]

I have a request can you make bottom screen bigger as top screen while in vertical and set a gap between 2 screen because I like use FlipGrip handle

Yeah, the next version will have the option to set the gap between screens.

 

[cvskid]

Awesome updates.

 

[zebrone]

how to load single screen mod on LoZ: OoT

load/mods/[titleid]
-exefs
-romfs
the "UI" folder goes to
load/textures/[titleid]

Excuse can you be more explicit?

Ive 3ds eu rom and i want italian language.
which files and where i have to put?
have i to create some folders? have i to rename language folder, i.e. 08_EU_ITALIAN, and others files with no folder in UI FOLDER?