 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] SMS: B06546A     ]
 ] L. GRADY           ]    BFS PROGRAM NOTE         ]                  ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:            ]
 ] 282/0668           ]      RELEASE NOTE ( )       ] REV 05/28/85     ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ]  BSL 8.01A AND SUBS           ]  CREW (X)  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]           MAJOR SOFTWARE AREA:            ] OPS MODES AFFECTED:     ]
 ]BSL(X) BSS( ) GNC( ) SEQ( ) SM/SP( ) IPL( )] NONE                    ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA:  MMU                                             ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: MC615-0005/3.2.1.3.2.1 - 3.2.1.3.2.2           ]
 ]_____________________________________________________________________]
 ] TITLE: COMPUTED CHECKSUM ERROR ANNUNCIATION                         ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ]   WHEN LOADING BFS, COMPUTED CHECKSUM ERROR(S) MAY BE               ]
 ]   ANNUNCIATED. THESE ERROR(S) OCCUR DUE TO A DIFFERENCE             ]
 ]   IN THE DATA TRANSFER RATE BETWEEN MMU(S). ANNUNCIATION            ]
 ]   OCCURS ON EVERY OCCURRENCE OF AN ERROR CONDITION INCLUD-          ]
 ]   ING TRANSIENT ERRORS. FOUR CONSECUTIVE ERRORS MUST OCCUR          ]
 ]   IN ORDER TO DISCONTINUE THE BFS LOAD.                             ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ]                                                                     ]
 ]    IF A COMPUTED CHECKSUM ERROR(S) IS ANNUNCIATED WHILE             ]
 ]    LOADING BFS, PERFORM A DEU MESSAGE RESET IN ORDER TO             ]
 ]    REMOVE THE ERROR MESSAGE. BSL WILL AUTOMATICALLY RE-             ]
 ]    TRY LOADING THE MMU LOAD BLOCK IN ERROR. IN THE EVENT THAT       ]
 ]    THERE ARE THREE CONSECUTIVE RETRY FAILURES, BSL WILL DISCON-     ]
 ]    TINUE THE BFS LOAD REQUEST REQUIRING A RESTART OF THE IPL        ]
 ]    PROCESS.                                                         ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]RI:<S> W. SELFRIDGE       DATE 5/28/85 ]                             ]
 ] --------------------         ---------]                             ]
 ]SSD: SAM ANKNEY           DATE 9/21/88 ]                             ]
 ] --------------------         ---------] JACK G BOYKIN       9/22/88 ]
 ]PF MGR:MICHAEL BRIEDEN    DATE 9/19/88 ]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_____________________________________________________________________]
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