*COMDECK IMSNCNT
 #
*0DC  NCNT
* 
*     NETWORK CONNECTION TABLE FOR MANAGING NETWORK CONNECTIONS.
*     A TABLE WILL BE CREATED FOE EACH SET OF 16 NETWORK CONNECTIONS. 
*     THERE IS A ONE WORD ENTRY IN THE TABLE FOR EACH NETWORK 
*     CONNECTION. AN ENTRY IS CREATED WHENEVER A NEW CONNECTION 
*     IS CREATED AND DELETED WHENEVER A CONNECTION IS TERMINATED. 
*     WHEN THE LAST ENTRY IN THE TABLE IS DELETED, THE TABLE WILL 
*     BE RELEASED. THE TABLE IS ALSO RELEASED WHEN THE LOGICAL
*     LINK FAILS. IT IS DYNAMICALLY ALLOCATED AND CAN BE MOVED FOR
*     GARBAGE COLLECTION. 
* 
* 
*                              2      3        4   4       5    5 
*     0        6               4      2        0   6       1    9 
*     I-------I---------------I------I--------I---I-------I------I
*     I   ID  I     SIZE      I  HN  I   TN   I   I   NCN I  CI  I
*     I-------I---------------I------I--------I---I-------I------I
*     I                                                          I
*     I                                                          I
*     I-------I------I--------I--I--I--I--I--I--I----------------I
*     I       I      I N I O  IN IO IN IB ID I  I NCNB/          I
*     I   CS  I  IS  I I I SI IO IO IB IH IB I  I PCNB ADD       I
*     I       I      I B I B  IB IB IO IH IS I  I                I
*     I       I      I        I  I  I  I  IN I  I                I
*     I-------I------I--------I--I--I--I--I--I--I----------------I
*     I                                                          I
*     I                                                          I
*     I----------------------------------------------------------I
* 
* 
* 
*     WHERE 
* 
*     ID       = NETWORK CONNECTION TABLE BLOCK ID. 
*     SIZE     = NETWORK CONNECTION TABLE BLOCK SIZE. 
*     HN       = HOST NODE NUMBER (1-31)
*     TN       = TERMINAL NODE NUMBER (1-255) 
*     NCN      = NUMBER OF ACTIVE CONNECTIONS IN THE TABLE. 
*                (1-16) 
*     CI       = CONNECTION INDEX, NETWORK CONNECTION NUMBER
*                DIVIDED BY 16. 
*     PS       = PREVIOUS STREAM STATE OF CONNECTION. 
*     CS       = CURRENT STREAM STATE OF CONNECTION.
*     NIB      = BSN OF NEXT PRU INPUT BLOCK. 
*     OIB      = OUTSTANDING FOR PRU INPUT BLOCK. 
*     NOB      = BSN OF NEXT PRU OUTPUT BLOCK.
*     OOB      = OUTSTANDING BACK FOR PRU OUTPUT. 
*     NBO      = DATA BLOCK OUTSTANDING COUNT.
*     BHS      = BLOCK HANDLER STATE. 
*     DBSN     = DOWN LINE DATA BLOCK BSN SENT(IVT).
*     NCNB/ 
*     PCNB ADD = NETWORK CONNECTION BLOCK OR PRU CONNECTION BLOCK 
*                ADDRESS. 
* 
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