*COMDECK ASYNCON
_ 
* * * *  WORKCODES PROCESSED AT MUX AND POSSIBLY AT OPS LEVEL 
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  A2WOUBX   = A0OBUX;                       _OUTPUT BUFFERS XMITTED    ?
  A2WCHOUT  = MMCHOUT;                      _XPARENT CHARACTER TIME OUT?
  A2WBREAK  = A0WK1;                        _BREAK CONDITION RECOGNIZED?
  A2WXON    = A0WK2;                        _REGULATION XON RECEIVED   ?
_ 
* * * *  WORKCODES COMPLETELY PROCESSED AT MUX LEVEL
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  A2WXOFF   = A0WK3;                        _REGULATION XOFF RECEIVED  ?
  A2WINACT  = A0WK4;                        _INPUT ACTIVE (FIRST CHAR) ?
  A2WLF     = A0WK5;                        _LF SEEN (SEND CR FOR CP)  ?
_ 
* * * *  WORKCODES COMPLETELY PROCESSED AT OPS LEVEL
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  A2WDELAY  = A0WK3;                        _DELAY EXPIRED WORKCODE    ?
  A2WTERMIO = A0WK4;                        _INPUT/OUTPUT TERMINATED   ?
                                            _NEXT 3 ARE ORDER DEPENDENT?
  A2WEOB    = A0WK5;                        _END OF BLOCK SEEN    (0)  ?
  A2WEOL    = A0WK6;                        _LOGICAL LINE (MSG)   (1)  ?
  A2WEOP    = A0WK7;                        _PHYSICAL LINE (BLK)  (2)  ?
  A2WREGL   = A0WK8;                        _(MUX) REGULATION DETECTED ?
  A2WTOUTP  = A0WK9;                        _OUTPUT TERMINATED         ?
  A2WSCHAR  = A0WK10;                       _SECURITY CHARACTER FOUND  ?
_ 
* * * *  AUTO RECOGNITION WORKCODES, PROCESSED AT OPS LEVEL 
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  A2WFAILAR = A0WK11;                       _AUTO RECOGNITION FAILED   ?
  
                                            _ LOW RANGE      HIGH RANGE?
  A2W110    = A0WK12;                       _ 110   BPS         -      ?
  A2W134    = A0WK13;                       _ 134.5 BPS (2741)  -      ?
  A2W150    = A0WK14;                       _ 150   BPS        600 BPS ?
  A2W300    = A0WK15;                       _ 300   BPS       1200 BPS ?
  A2W301    = A0WK16;                       _ 300   BPS (2741)  -      ?
  A2W600    = A0WK17;                       _ 600   BPS       2400 BPS ?
  A2W1200   = A0WK18;                       _1200   BPS       4800 BPS ?
  A2W2400   = A0WK19;                       _2400   BPS       9600 BPS ?
  
  A2WASCII  = A0WK12;                       _ASCII CODE SET            ?
  A2WTPAPL  = A0WK13;                       _TYPEWRITER PAIRED APL     ?
  A2WBPAPL  = A0WK14;                       _BIT PAIRED APL            ?
  A2WEBCD   = A0WK15;                       _EXTERNAL BCD              ?
  A2WEAPL   = A0WK16;                       _EXTERNAL BCD APL          ?
  A2WCORR   = A0WK17;                       _CORRESPONDENCE            ?
  A2WCAPL   = A0WK18;                       _CORRESPONDENCE APL        ?
_ 
* * * *  ASYNC TERMINAL STATES (FIELD BSAIOSTAT IN TCB) 
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  A2STIDLE  = 0;                            _TERMINAL IDLE             ?
_ 
                               (FIELD BSAOUSTAT IN TCB)                ?
  A2SOTOACT = 1;                            _OUTPUT TERMINATD WL TO OPS?
  A2SOWLACT = 2;                            _OUTPUT XMITTED WL TO OPS  ?
  A2SOCMACT = 4;                            _CANNED MESSAGE ACTIVE     ?
  A2SOBFACT = 8;                            _BUFFERED OUTPUT ACTIVE    ?
_ 
                               (FIELD BSAINSTAT IN TCB)                ?
  A2SICWAIT = 120;                          _INP ACTV CNT BEFORE WAIT..?
_ 
* * * *  HALF SECOND TIMER REASONS
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  A2TRRESET = 0;                            _RESET TIMER               ?
  A2TRAUTO  = 1;                            _AUTO RECOGNITION          ?
  A2TRIREGL = 2;                            _INPUT REGULATION          ?
  A2TREVENT = 3;                            _TIMER EVENT               ?
_ 
* * * *  HALF SECOND TIMER VALUES 
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  A2TMRESET = 0;                            _RESET TIMER               ?
  A2TMAUTO  = 120;                          _AUTO RECOGNITION TIMER    ?
  A2TMIREGL = 1;                            _INPUT REGULATION TIMER    ?
  A2TMEVENT = 2;                            _EVENT TIMER (2741/PAPERTP)?
  A2TMPW    = 60;                           _PAGE WAIT INPUT REGULATION?
_ 
* * * *  INPUT REGULATION LEVELS (FIELD BSAIRSTAT IN TCB) 
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  A2IRNONE  = 0;                            _NO INPUT REGULATION       ?
  A2IRWXON  = 1;                            _WAIT WITH XON AFTER XOFF  ?
  A2IRXOFF  = 2;                            _INPUT REGULATION XOFF     ?
  A2IRSYS   = 3;                            _SYSTEM/MUX BUFFER REGL    ?
_ 
* * * *  PARAMETERS FOR PTAEPLX ROUTINE 
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  A2EPON    = TRUE;                         _TURN ECHOPLEX ON          ?
  A2EPOFF   = FALSE;                        _TURN ECHOPLEX OFF         ?
_ 
* * * *  PARAMETERS FOR PTACHTMR ROUTINE
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  A2CTRESET = 0;                            _RESET CHARACTER TIMER     ?
  A2CT200   = 2;                            _200 MILLISECOND CHAR TO   ?
