OPL_GET_PROP
ret = OPL_GET_PROP(string, node, "name", &name, &len);
ret = OPL_GET_PROP(int, node, "portid", &portid, -1);
ret = OPL_GET_PROP(int, node, "board#",
ret = OPL_GET_PROP(string, node, "name", &name, &len);
ret = OPL_GET_PROP(int, node, "portid", &portid, -1);
ret = OPL_GET_PROP(int, node, "board#", &board, -1);
ret = OPL_GET_PROP(int, node, "portid", &portid, -1);
ret = OPL_GET_PROP(int, node, "board#", &board, -1);