Homebrew OPEN_AGB_FIRM discussion thread

[Jayro]

New beta release!
https://github.com/profi200/open_agb_firm/releases

I wonder why they chose .bmp for screenshots over .png

 

[Vorty11]

New beta release!
https://github.com/profi200/open_agb_firm/releases

Nice. Anyone else try out the new color correction feature? I have an IPS top screen and set the gamma to 1.8 as directed and am using the gba color correction profile. It looks similar to the example pictures here, especially for LOZ Minish Cap. But even even bumping the lcd brightness all the way, it still looks darker/muted compared to the example pictures I linked to.

I think I'll try playing with the gamma some more, but it's a cool feature to make it more closely match the original screen. Thing is, I kind of prefer the more vibrant colors of the default 3ds even though it's not as accurate.

 

[AleronIves]

I wonder why they chose .bmp for screenshots over .png

It's faster to dump raw images than to spend CPU cycles compressing them. It also probably requires less memory.

 

[tjbde]

Nice. Anyone else try out the new color correction feature? I have an IPS top screen and set the gamma to 1.8 as directed and am using the gba color correction profile. It looks similar to the example pictures here, especially for LOZ Minish Cap. But even even bumping the lcd brightness all the way, it still looks darker/muted compared to the example pictures I linked to.

I think I'll try playing with the gamma some more, but it's a cool feature to make it more closely match the original screen. Thing is, I kind of prefer the more vibrant colors of the default 3ds even though it's not as accurate.

Could you explain what screen is represented on left side of the picture? I guessed the right side is AGS 101 (GBA SP)?

 

[BETA215]

Could you explain what screen is represented on left side of the picture? I guessed the right side is AGS 101 (GBA SP)?

Left is raw video output of the console. Right is that same output, corrected to resemble how it looks like in an actual GBA screen - AGB/AGS-001.

Left is what some would call 'emulator look', or what modern replacement screens decide to display - uncorrected image.

AGS-101/USG also display an uncorrected image, which is okay-ish depending on the game.

 

[BETA215]

Dude be on fire lately, now with a groundbreaking update in terms of image fidelity: https://github.com/profi200/open_agb_firm/releases/tag/beta_2024-07-30

 

[UWUyamilUWU]

Do you know how to enable the Circle-pad again?, it made me more comfortable

 

[chrisis685]

Do you know how to enable the Circle-pad again?, it made me more comfortable

It's in the README.

https://github.com/profi200/open_agb_firm/blob/master/README.md

It will add some input lag/frame delay, that's why it was removed according to the readme, you can add the following lines into the config.ini however, then it will work again:

[input]
RIGHT=RIGHT,CP_RIGHT
LEFT=LEFT,CP_LEFT
UP=UP,CP_UP
DOWN=DOWN,CP_DOWN

 

[JORGETECH]

Dude be on fire lately, now with a groundbreaking update in terms of image fidelity: https://github.com/profi200/open_agb_firm/releases/tag/beta_2024-07-30

I have to say the new gamma correction looks fantastic on my New 3DS TN panel, no tweaking required, it's spot on. It actually looks closer now to the IPS panel I have installed in my Game Boy Advance and it makes the hardware scaling option look a bit "sharper" and cleaner in general.

I'll be more inclined towards using open_agb_firm now, that's how good the update is for me.

 

[ScottRobRubin]

Hm, in the README under colorProfile it says to adjust lcdGamma to match a gba, but on the github release page it says "A side effect of the new gamma correction is that the gbaGamma, lcdGamma, brightness and contrast settings are disabled for now. They will be reimplemented in the color profile settings later".
I could not see noticeable results when tweaking the lcdGamma or gbaGamma with colorProfile set to either gba or nds, so perhaps the README simply wasn't updated to reflect this change.

Anyway, I tried both nds and gba profiles and none was ideal for me, colors were strangely washed out and somewhat brighter, I have a 2DS XL with what is likely to be a TN panel for what it's worth.
It would be cool to be possible to have something that's closer to the examples Vorti11 shared but I understand if that's not possible yet.

 

[themosteve]

Is it possible to make this playing with bottom screen by any chance?

 

[DSoryu]

Is it possible to make this playing with bottom screen by any chance?

No, and there aren't any plans to implement it at least for now.

 

[BETA215]

Hm, in the README under colorProfile it says to adjust lcdGamma to match a gba, but on the github release page it says "A side effect of the new gamma correction is that the gbaGamma, lcdGamma, brightness and contrast settings are disabled for now. They will be reimplemented in the color profile settings later".
I could not see noticeable results when tweaking the lcdGamma or gbaGamma with colorProfile set to either gba or nds, so perhaps the README simply wasn't updated to reflect this change.

Anyway, I tried both nds and gba profiles and none was ideal for me, colors were strangely washed out and somewhat brighter, I have a 2DS XL with what is likely to be a TN panel for what it's worth.
It would be cool to be possible to have something that's closer to the examples Vorti11 shared but I understand if that's not possible yet.

Well, those settings are disabled for now, so for sure they won't work

Yeah, 3DS screens aren't known for being fantastic. It depends on your particular unit: sometimes it comes with a terrible screen, sometimes it's pretty good, sometimes it's decent enough. There's also the TN and IPS lottery, which makes matters even worse cause they are also different too.

Use the older build (https://github.com/profi200/open_agb_firm/releases/tag/beta_2024-07-25) and see if messing with settings make it nicer.

 

[Kramberg]

Hey
Is it possible to foreward gba roms to the 3ds home menu so they start with open_agb_firm?
Will my VC games still work if i install open_agb_firm?

thanks for any help!!

 

[pistonfish]

Will my VC games still work if i install open_agb_firm?

Yes

Is it possible to foreward gba roms to the 3ds home menu so they start with open_agb_firm?

From what I've heard people created forwarders that work with fastboot3DS

 

[genericmelancholy]

Any idea how to get an old pokemon emerald save working with open_agb_firm? The save has been EEPROM patched and works fine with gbarunner2. It's been placed in the correct folder (/3ds/open_agb_firm/saves/) but it doesn't seem to have been detected, though my saves for other games have been. I'm aware that there are known issues with using existing saves but was wondering if anyone had a fix?

 

[kuro0628neko]

Any idea how to get an old pokemon emerald save working with open_agb_firm? The save has been EEPROM patched and works fine with gbarunner2. It's been placed in the correct folder (/3ds/open_agb_firm/saves/) but it doesn't seem to have been detected, though my saves for other games have been. I'm aware that there are known issues with using existing saves but was wondering if anyone had a fix?

Have you placed the ROM itself in the correct folder, as opposed to only uploading the save file? You need both.

 

[genericmelancholy]

Have you placed the ROM itself in the correct folder, as opposed to only uploading the save file? You need both.

The ROM is just in my usual roms folder with the rest of my GBA games. What is the correct folder I should be using?

 

[kuro0628neko]

The ROM is just in my usual roms folder with the rest of my GBA games. What is the correct folder I should be using?

You said that your other ROMs in that folder work with abg right? So there should be no issue I think.
Silly question, is the save state the same name as the ROM (obviously with a different file type)? If they aren't the same name, the save state won't be read.

 

[genericmelancholy]

You said that your other ROMs in that folder work with abg right? So there should be no issue I think.
Silly question, is the save state the same name as the ROM (obviously with a different file type)? If they aren't the same name, the save state won't be read.

You were right, there's no issue. After hours of confusion it turns out that all the problems were down to using a corrupted ROM file. After replacing the ROM everything works fine again. Thanks!