we should fix whatever problems make it hard to use lua in desmume (dont you have to scrounge up the dll or something) and then include some good scripts in the repository as part of a perks pack for next time we make a release (whenever that may be...)

did your mac update since some days ago?

Yes, there are many ways for you to configure the emulator to show one screen only. You've discovered that you can reverse that.

Use a newer version of desmume and stop using savestates

how do you figure these out? are you actually able to use the desmume disassembler, or do you use the GDB stub, or debug the emulator in VS, or what?

Why don't you leave the thinking to me?
How do you know the speed is fast? Turn on the FPS display and tell me what it says.

if the mouse doesn't work, it's because
1. you're using the external firmware file. don't do that, or calibrate it properly
2. you don't understand how the game works and maybe "mouse" isn't supported.

you've tried 2 out of the 8 main buttons. try harder.

AR codes aren't designed for specific desmume versions. Versions of desmume older than the latest one posted on this site might have bugs that make the AR codes not work.

AR codes _ARE_ designed for specific pokemon versions. You're using a hacked pokemon. There may be no AR codes that work on a hacked pokemon.

display method is in windows only.
use a newer build from the desmume.org downloads page

nobody's gonna make that code for you. you'll have to become a super hacker. but i can suggest something a little easier. use the SPU view to find the addresses of _instruments_ that are playing. then zero them all out in hex editor or by lua script. then the instruments will be silenced and only sfx will play. or rather, if you want, you can use the spu view to find the addresses of the SFX, if you can isolate them from the constant chatter of the instruments. then you can dump them directly (the spu viewer will tell you the length of the sfx also). please note that the sfx are also likely to be small musical jingles or modulated in realtime, so this may not result in 100% what you're accustomed to hearing. Please also note on the NDS, some sounds may be GB-type sounds. So the most reliable way to do it will be to zero out the instruments.

You will find more help doing this kind of thing on a homebrewer or reverse engineers forum, not this place full of people asking how to press the start button or why they lost their save files.

config > display method