__snd_gf1_write16
__snd_gf1_write16(gus, reg, (unsigned short) (addr >> 11));
__snd_gf1_write16(gus, reg + 1, (unsigned short) (addr << 5));
__snd_gf1_write16(gus, reg, data);
__snd_gf1_write16(gus, reg, data);