Because my Yamaha CX5m is broken.

am I a bit playing around with BLEUMSX and insert the SFG05 and YRM-104 rom in BLEUMSX.
If I do call music (SFG05) than BLEUMSX hangs, If I call a YRM-104 function than I become a device i/o error.
I put the SFG05 in the cartridge-slot 1 and the other rom in cartridge-slot 2
Well, this doesn't work.
Is it possible to emulate a SFG05 in BLEUMSX?
