*COMDECK TMD4D1 
_ 
*       M O D E   4   O V E R L A Y 
? 
            2: (BS4IVT      : ARRAY[0..4]   _USED PORTION OF IVT AREA  ?
                              OF INTEGER; 
                BS4LPFLGS   : B02BITS;      _MODE 4C LP READY,BUSY FLGS?
                BS4READREQ  : BOOLEAN;      _READ REQUEST ACTIVE       ?
                BS4EXISTENT : BOOLEAN;      _MODE 4C EXISTENT DEVICE   ?
                BS4SP1      : BOOLEAN;      _SPARE                     ?
                BS4PGTURN   : BOOLEAN;      _CONSOLE PAGE TURN REQUIRED?
                BS4XPTURN   : BOOLEAN;      _CONSOLE XPT INPUT REQUIRED?
                BS4LPIP     : BOOLEAN;      _MODE 4C LP 0 - NIP, 1 - IP?
                BS4WRTYPE   : B04BITS;      _TYPE OF WRITE ISSUED      ?
                BS4STATE    : B04BITS;      _TERMINAL STATE            ?
                BS4ERRCOUNT : B08BITS;      _ERROR COUNTER             ?
                BS4LCOUNT   : B08BITS;      _REMAINING LINES ON PAGE   ?
                BS4REJCOUNT : B08BITS;      _MODE 4A BATCH REJECT COUNT?
                BS4DNCODE   : B08BITS;      _WORKCODE THAT DOWNED DEV. ?
                BS4TIMER    : INTEGER;      _LONG TERM RECOVERY TIMER  ?
                BS4CCBPTR   : B0BUFPTR;     _PTR TO CLUSTER CONTROL BLK?
                BS4TCBPTR   : B0BUFPTR;     _PTR TO NEXT TCB ON CLUSTER?
                BS4INBUF    : B0BUFPTR;     _PTR TO INPUT TRANSMISSION ?
                BS4OUTBUF   : B0BUFPTR;     _PTR TO OUTPUT TRANSMISSION?
                BS4PSOURCE  : B0BUFPTR;     _PTR TO ANY PARTIAL SOURCE ?
                BS4TPCB     : B0BUFPTR;     _PTR TO TEXT PROCESSING CB ?
                BS4MARK     : B0BUFPTR);    _PTR TO TPMARK SAVED BFRS  ?
  
  
            3: (BS4DM1      : ARRAY[0..4]   _USED PORTION OF IVT AREA  ?
                              OF INTEGER; 
                BS4STSFLGS  : B04BITS;      _MODE 4C STATUS INFORMATION?
                BS4INFLGS   : B03BITS;      _CONSOLE INPUT REQUIRED FGS?
                BS4DM2      : B09BITS);     _FORCE TO UPPER BITS       ?
