what are the types of roms in the neo cart

well theres the C roms, the V roms, EP roms, M roms, and S roms.

which is which?

i have a morethan likely bootleg cart of puzzle bobble (loaded with ep's) and the sound is messed up, so i wanted to check and see if there were any bad solder joints before i gave up on it.

thanks

Check the M1 ROM(Z80 music program), and the V3, V4 ROMs(audio samples). You V ROM's may be numbered differently, so check all of the V ROM's.