OPL_SUSTAIN_RELEASE  316 dev/ic/opl.c   	opl_set_op_reg(sc, OPL_SUSTAIN_RELEASE, v, 0, p->ops[OO_SUS_REL+0]);
OPL_SUSTAIN_RELEASE  317 dev/ic/opl.c   	opl_set_op_reg(sc, OPL_SUSTAIN_RELEASE, v, 1, p->ops[OO_SUS_REL+1]);