opl_calc_vol      130 dev/ic/opl.c   int opl_calc_vol(int regbyte, int volume, int main_vol);
opl_calc_vol      518 dev/ic/opl.c   		vol0 = opl_calc_vol(ksl0, vel, sc->volume);
opl_calc_vol      519 dev/ic/opl.c   		vol1 = opl_calc_vol(ksl1, vel, sc->volume);
opl_calc_vol      522 dev/ic/opl.c   		vol1 = opl_calc_vol(ksl1, vel, sc->volume);