public override Buffer GetMusic(uint index) { switch (MusicDataUsage) { case DataUsage.ForceAmiga: if (!amigaMusicOk) { throw new ExceptionFreeserf(ErrorSystemType.Data, "Amiga music data not available."); } return(amiga.GetMusic(index)); case DataUsage.ForceDos: if (!dosOk) { throw new ExceptionFreeserf(ErrorSystemType.Data, "DOS music data not available."); } return(dos.GetMusic(index)); case DataUsage.PreferAmiga: default: if (amigaMusicOk) { return(amiga.GetMusic(index)); } else { return(dos.GetMusic(index)); } case DataUsage.PreferDos: if (dosOk) { return(dos.GetMusic(index)); } else { return(amiga.GetMusic(index)); } } }