Hacking Question about the GBA pak

[d3td]

I got the gba expansion pack and wanted to try the built in emulators.
The box says that it has emulators for NES,SNES,GB SMS & PCE.

I tryed running games for each of those consoles(i put them in the GBA folder) but only a nes rom worked and the rest either got a blackscreen or didnt boot at all.

How do i get the other built-in emulators to work?

 

[Ultralex]

Use other emus,these suck.
THe snes roms need to be in *.snes format,did you ever see some like that?
I didn't.

 

[d3td]

Okay but i want to try the built-in emulators.
Could i get some info on them?

Did anyone else get them to work? because only the nes emu booted a game and the others didnt(either a black screen once booted or doesnt boot at all)