Describes the generic node descriptor layout. This object represents the ND obtained from the CHSC instruction: /* ND Flags */ int bValidity :3; /* 1:is ND valid */ int bNodeType :1; /* 1:0=dev,1=chnlsubstm nod*/ int bInternal :1; /* internal(1)/external(0) */ int bCHPinvalid :1; /* IF =1,NDCHPID is invalid*/ int bNDRsvd1 :2; /* spare bits for alignment*/ char NDType; /* reserved by architecture*/ char NDClass; /* Class for subsystem node*/ char NDCHPID; /* CHP ID for specified int*/ char NDTypeNum 6 ; /* type number of the SDC */ char NDModelNum 3 ; /* ND model number in the form of 3 EBCDIC OCTETS */ char NDMfgr 3 ; /* ND manufacturer in the form of 3 EBCDIC OCTETS */ char NDMfgrPlant 2 ; /* ND plant of manufacture (2 EBCDIC OCTETS) */ char NDSeqNum 12 ; /* ND sequence number (12 EBCDIC OCTETS) */ char NDTag 2 ; /* ND tag */