MMBN2 Chinese Translation stucks on opening menu, and a request

[Yave-Yu]

Version: 2.1.4-173512f6
Issue: In Mega Man Battle Network 2 (aka Rockman EXE 2) Chinese Translation, when you can control Lan then press start key, the game freezes, but it won't freeze in mGBA so I guess it's an emulation issue.
Could you look and fix it? Thanks!
Here's patch, apply it onto MMBN2 US ROM.
MMBN2CnTran.zip

Request: Can you make Noise channel louder? Current some music can't hear its noise drum clearly (most on MMBN series). Fun fact: an FB2K GSF plugin uses your VBA-M core but made noise channel louder, so I guess VBA-M itself could do this too.

[Squall-Leonhart]

use sdl, directsound or openal for louder noise channel

[Squall-Leonhart]

[Yave-Yu]

use sdl, directsound or openal for louder noise channel

Options -> Audio -> Configure ? I tried, Channel 4 (Noise channel) seems no change... No only this, but also cause PSG audio silent after change a device unless reload ROM.
(Actually SDL is default option)

[Squall-Leonhart]

@endrift i tried (and failed) to get the mgba logger to print thumb instructions that are fired when the player opens the main menu with this rom hack, but noticed your 2015 commit @ mgba-emu/mgba@b67e4b5

Are we missing these?

[endrift]

Here's what the manual says about that opcode.

[Squall-Leonhart]

I have more or less a copy paste implementation in Squall-Leonhart@c85407b that seems to do the job of running the game, it could be wrong as all heck @endrift im not a core programmer and have no idea how to turn documentation into emulator code lmao

[Squall-Leonhart]

@Yave-Yu here is a test build
visualboyadvance-m.zip

[Yave-Yu]

Yeah, it won't freeze now, but then graphical bug discovered.

(Left is VBA-M, right is mGBA)

See text at right-bottom, seems palette gets wrong.

Text at left gets not only wrong palette but also weird background color.

"Function" text same as above.

[Squall-Leonhart]

not sure if thats due to my half arsed CMP3 implementation, probably is.

we do not have anyone that speaks arm/thumb on the team, let alone someone that can implement it to x86 asm, like it is.

[Steelskin]

I have a potential fix in 24b6ac5.

[Steelskin]

I tested the fix and can confirm that the graphical glitches are no longer present. I'll land the fix and close this. Thanks for the report!