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  mGBA not detecting ps4 controller at all
Posted by: FalconChief - 10-05-2023, 02:49 AM - Forum: General - Replies (2)

So I got this working and I like to play gba games with a controller. So I hook up my Dualsjock 4 controller to my pc with Bluetooth and the drop down menu in the controller mapping section just doesn't open. Guessing that means it just can't see the controller for some reason

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Question Help with Pokémon trading on mGBA
Posted by: TKPunk222 - 09-30-2023, 05:15 PM - Forum: Gaming - No Replies

I've been doing a mostly glitchless living dex run of Gen. 1 (excluding the Mew & Old Man glitches in Red & Blue), I was able to trade the Red exclusive to Yellow, but now I've hit a brick wall cause now I can't trade the Blue exclusives to Yellow. At first mGBA wouldn't load both games' save files, which I fixed that problem by myself, but now I get the "Welcome to the Cable Club! This area is reserved for 2 friends who are linked by cable." message when I try talking to the NPC near a PC in a PokéCenter. Help with this conundrum would be greatly appreciated.

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  script for key press inconsistent
Posted by: sweoyithaetga - 09-20-2023, 02:05 PM - Forum: General - No Replies

I'm having an issue with creating a script that simulates a press of the X key (where I use my A button) to work consistently with mGBA.
I need it to be an external script that activates the mGBA window and presses X. The window activation part works everytime, but the key press only works around 1/5 of the time.

This key press works everywhere else such as chat boxes, so I know it's solid. It's only inconsistent with the emulator. I have tried multiple scripts, and used python, AutoIt and autohotkey. The result is always the same - the key press works only sometimes.

Any idea why this might happen? Thanks in advance.

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  Save State Information - re: compression, etc.
Posted by: wuvo - 09-14-2023, 05:39 AM - Forum: General - Replies (5)


I'm a hobbyist who enjoys messing with save state data in hex editors, and occasionally writing tools (for Windows) like game editors, save state editors, etc... I downloaded mGBA with the hopes of being able to poke around in the save states of a particular game and write a guide or some software.

However, the save states are compressed, and vary in size - and apparently also contain image data and/or the *.sav file architecture, etc, all within the *.ss* file.

Does anyone know of any documentation regarding the compression methods or any other useful information about the save state architecture? (I've looked through some of the source code on GitHub but haven't found anything useful yet.)

I can't seem to find options to turn off SS compression in mGBA.


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  control stick inputs start/select instead of dpad
Posted by: rollbackball - 09-09-2023, 02:49 AM - Forum: General - Replies (3)

so i wanted to play pokemon ruby
and i did the controller config
but the stick inputs are using start and the a button
and it only seems to effect up and right on the dpad

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  Is there any way to limit full screen resolution?
Posted by: FashionMage - 09-02-2023, 10:27 PM - Forum: General - No Replies

As in maintaining the normal frame size while having the fullscreen black borders and whatnot. VBA-M has this functionality but I'm trying to figure if mGBA is capable of the same.

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Bug Left bumper not working at all
Posted by: Corrupt_Arrow - 08-28-2023, 04:26 AM - Forum: General - Replies (8)

I was playing radical red. Went to go do something and i came back, and my left bumper is not working whatsoever. I tried to switch the button from a to something else, didnt work. Then i tried to do the controller, that didnt work at all either. After that i tried maybe making a new save and it still didnt work.

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  Cheats help
Posted by: ChaserPlays - 08-19-2023, 04:25 PM - Forum: General - Replies (1)

hello, I have trying to cheat Pokemon Emerald (u)
however 1 code i need is not working that happens to be the Wild Pokemon Modifier code, the websites I use are:
https://www.pokemoncoders.com/pokemon-em.../#comments &

the codes I have tried using are:
(all of these say Gamesharkv3/action replay)
Master code
D8BAE4D9 4864DCE5
A86CDBA5 19BA49B3

Main Cheat
B749822B CE9BFAC1
A86CDBA5 19BA49B3
Then a Pokemon code for example
Absol: CD58902B B960EACA

Im sorry to bother but I tried everything

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  How to synchronise multiple mGBA
Posted by: ilikesky1 - 08-18-2023, 05:51 PM - Forum: General - Replies (2)

So i wanted to shiny hunt on my pokemon emerald but i cant control multiple windows at the same time i cant find anything on yt so im here.

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  C++ Wrapper for Scripting API
Posted by: cragson - 08-13-2023, 01:20 AM - Forum: Development - No Replies


I don't know if this is the proper place to open this thread but I don't have access to any other dev related sections.

I programmed a little Wrapper for the Scripting API, which is written in C++ and could easily be ported to other languages like e.g. python.

With this Wrapper you can execute functions like e.g. reading or writing to memory, retrieve game code or title and sending key presses.

The wrapper works by setting up a TCP server on the C++ application and a TCP client with a LUA file on the emulator. Afterwards commands are sent from the server to the client and parsed in LUA and results are sent back.

I did it because it was a cool experiment for myself and also because I wanted to do external cheat's for some GBA games.
Also I chose to not read/write directly into the emulators process memory, so it could support more version's of mGBA (dependend of the script api and not e.g. byte signatures etc.)

This was pretty fun to me and I hope this could also be somewhat useful to you guys.
Everything is open-source and for you to access right away.
Also I'm quite busy but if I find any time to work on this in the future, I'll be more than happy to extend the current feature set and make it more stable.
Please be aware that this project was coded in 3-4 hours and I never messed with mGBA nor Lua before that.


Also I did already a small cheat for Pokemon Mystery Dungeon Red Rescue Team, which can be found here:

I'm always open for any kind of constructive feedback! Smile

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