This is a rather large bump, but I wanted to confirm that SNESDS and SnezziDS both boot and run fine on the 3-in-1 expansion pack. You can even use PSRAM to load them if the file is 16MB or under. I've only built in one game to each file (I don't know if it'll work with multiple games in one DS file). I included SNESDS in this because the DLDI version doesn't work for me. I used the latest version of SnezziDS (I think it's 0.28a) and this version of SNESDS (which is the one WITHOUT DLDI):
http://danthemanms.googlepages.com/nesDS_s...slot1_usage.zip
SNESDS:
1: use the pre-DLDI version and use the regular builder to convert your SNES rom into a .gba rom.
2: put the file on your microSD and the microSD on your slot-1 card (I used a r4)
3: boot Rudolf's EXPloader
4: you can boot it into PSRAM or NOR and games will save and load fine (the touch screen options works fine).
SnezziDS:
1: get any version you wish and drag and drop your SNES roms onto the snezzi.exe program
2: this will create ds files for each of the files you dropped in
3: you need to change the ending extension to .gba to get the EXPloader boot it.
4: boot up EXPloader and load it into either PSRAM or NOR and it'll work great!
Again, sorry for bumping this. DanTheManMS said the 3-in-1 will only work in theory. I just confirmed it! I suppose you could potentially do this with other emulators/homebrew that came out for DS before DLDI was around.