EMU8000_ATKHLDV_WRITE
EMU8000_ATKHLDV_WRITE(emu, ch, 0);
EMU8000_ATKHLDV_WRITE(hw, ch, vp->reg.parm.volatkhld);
EMU8000_ATKHLDV_WRITE(emu, i, 0x7F7F);
EMU8000_ATKHLDV_WRITE(hw, ch, 0x7f7f);