*COMDECK IMSLLCB
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*0DC  LLCB
* 
*     INFORMATION FOR EACH LOGICAL LINK IS STORED IN ONE LOGICAL
*     LINK CONTROL BLOCK. THE TABLE IS CREATED WHEN NAM CREATES 
*     THE LOGICAL LINK AND DELETED WHEN NAM DECLARES THAT THE 
*     LOGICAL LINK IS DOWN. THE TABLE IS DYNAMICALLY ALLOCATED
*     AND CAN BE MOVED BY GARBAGE COLLECTION. 
* 
*                 1 1      2 2 2 2       3    3  4            5 
*      0  6  8    6 7      1 2 3 4       6    9  2            9 
*     I--I----------------------I---------------I--------------I
*     IIDI        SIZE          I      LCBBP    I      LCBFP   I
*     I--I--I---I--I------I-I-I-I-------I---I---I--------------I
*     I HN  ITN IW I NBTE ICINIHI  NPC  IHRLINRLI     NC       I
*     I     I   I  I      ISISIHI       I   I   I              I
*     I-----I---I--I------I-I-I-I-------I---I---I--------------I
*     ICI   I//I PI  I KNDX     I     CMTC      I    NCNT      I
*     I-----I-------------------I---------------I--------------I
*     ICI   I ///////////////// I     LMTC      I    NCNT      I
*     I-----I-------------------I---------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
*     ICI   I ///////////////////////////////// I    NCNT      I
*     I-----I-----------------------------------I--------------I
* 
* 
*     WHERE 
* 
*     ID       = BLOCK ID 
*     SIZE     = BLOCK SIZE 
*     LCBBP    = LOGICAL LINK RING BACK POINTER 
*                LOGICAL LINK RING IS A DOUBLE LINKED RING, WITH
*                FORWARD AND BACK POINTER TO LINK UP ALL THE
*                LOGICAL LINK CONTROL BLOCKS TOGETHER.
*     LCBFP    = LOGICAL LINK RING FORWARD POINTER
*     HN       = HOST NODE NUMBER 
*     TN       = TERMINAL NODE NUMBER 
*     WOF      = LL FAILED BUT PRU CONNECTIONS HAVE NOT.
*     NBTE     = NBT ENTRY INDEX
*     CS       = CCP USING CS THRU THIS LOGICAL LINK
*     NS       = CCP USING NS THRU THIS LOGICAL LINK
*     HH       = HOST TO HOST LOGICAL LINK FLAG 
*     NPC      = NUMBER OF PRU CONNECTIONS THRU THIS LOGICAL LINK 
*     HRL      = HOST REGULATION LEVEL (1-3)
*     NRL      = NPU REGULATION  LEVEL (1-3)
*     NC       = NUMBER OF CONNECTIONS ON THIS LOGICAL LINK 
*     PI       = PIP NUMBER OF PIP MANAGING THIS LOGICAL LINK 
*     KNDX     = INDEX INTO STATUS K-DISPLAY. 
*     CMTC     = CURRENT MESSAGE TRANSFER COUNT. NUMBER OF MESSAGES 
*                TRANSFERRED SINCE THE LAST 5 MINUTES INTERVAL. 
*     LMTC     = LAST MESSAGE TRANSFERRED COUNT.
*                NUMBER OF MESSAGES TRANSFERRED IN LAST 5 MINUTE INTERVAL 
*                WHEN THE LLCB IS CREATED, THE CONNECTION INDEX IS
*                STORED IN EACH NETWORK CONNECTION TABLE ENTRY. 
*     CI       = CONNECTION INDEX, WHICH IS A MULTIPLE OF 16. 
*     NCNT     = NETWORK CONNECTION NUMBER TABLE ADDRESS. ZERO IF 
*                NO CONNECTION IN THAT RANGE EXISTS.
*                EACH NCNT HOLDS A RANGE OF 16 CONNECTION NUMBERS.
*                THE NCNT ASSOCIATED WITH A PARTICULAR
*                CONNECTION IS DETERMINED BY DIVIDING THE 
*                CONNECTION NUMBER BY 16, AND USING THIS
*                VALUE AS AN INDEX INTO THE LLCB. 
* 
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