 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ]  HIRAM THOMPSON    ]    PASS PROGRAM NOTE        ]        55246     ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:  05/26/87  ]
 ]  LSIS/282-7225     ]      RELEASE NOTE( )        ] REV B: 09/11/95  ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ]  OI-07 AND SUBS               ]  CREW ( )  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW (X)  GNC ( )  VU ( )  SM/PL ( )] 0, G1, G2, G3, G6, G8, G9, S2,  ]
 ]                                   ] S4, P9                          ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA: LDB, SPEC, ANNUNCIATION                          ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: SLDB, SDEU                                     ]
 ]_____________________________________________________________________]
 ] TITLE: GSE POLLING ACTIVE WITH NO LDBS MAY CAUSE COMMON SET         ]
 ]        SUMWORD ANNUNCIATION                                         ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ]   THERE IS A 75% CHANCE THAT A "SUMWORD ICCX" MESSAGE WILL BE       ]
 ]   ANNUNCIATED IN A COMMON SET IF BOTH LDB BUSES ARE DROPPED         ]
 ]   FROM THE SET OR HARD FAILED WHILE GSE POLLING IS ACTIVE AND       ]
 ]   AUTO TOGGLING OF LDB BUSES IS ENABLED.                            ]
 ]                                                                     ]
 ]   THE SUMWORD MISCOMPARES ARE DUE TO DIFFERENT GSE POLLING BUS      ]
 ]   ID'S IN THE POLLING GPC AND THE REST OF THE GPC'S IN THE SET.     ]
 ]   THIS DIFFERENCE IS DUE TO THE RATES AT WHICH:                     ]
 ]        - GSE POLLING BUS ID TOGGLES,                                ]
 ]        - THE BUS ID IS ICC'ED,                                      ]
 ]        - SUMWORD IS CHECKED.                                        ]
 ]   THESE THREE PROCESSES CAN LINE-UP WITH 75% PROBABILITY TO         ]
 ]   PRODUCE THE MESSAGE UNDER THE CONDITIONS DESCRIBED ABOVE.         ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ]  DISABLE GSE POLLING (ITEM 14 ON SPEC 100 OR ITEM 50 ON SPEC 1 OR   ]
 ]  TCS OPERATOR CODE 7) OR DISABLE  AUTO TOGGLING (VIA TCS OPERATOR   ]
 ]  CODE 7) PRIOR TO DROPPING BOTH LDB BUSES FROM THE SET IF NO        ]
 ]  ANNUNCIATION IS DESIRED.                                           ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]LSIS:   JEAN L. ZOPHY     DATE 10/18/95]                             ]
 ]     -------------------      ---------]                             ]
 ]ASD:   ERIC C. BINGHAM    DATE 10/19/95]                             ]
 ]     -------------------      ---------] DARRELL E. STAMPER 10/23/95 ]
 ]PF MGR: KAYLENE F. KINDT  DATE 10/20/95]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
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