FM2FRQ2
snd_emu10k1_ptr_write(hw, FM2FRQ2, vp->ch, make_fm2frq2(vp));
FM2FRQ2, make_fm2frq2(vp),
ATKHLDM, DCYSUSM, LFOVAL2, IP, IFATN, PEFE, FMMOD, TREMFRQ, FM2FRQ2,
FM2FRQ2, 24, /* 1 Hz */