 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] SMS:  D025       ]
 ] G. W. PHILLIPS     ]    BFS PROGRAM NOTE         ] DR:              ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:            ]
 ] RID/3686           ]      RELEASE NOTE ( )       ] 09/03/81         ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] ALL                           ]  CREW (X)  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]           MAJOR SOFTWARE AREA:            ] OPS MODES AFFECTED:     ]
 ]BSL( )BSS( )GNC( )SEQ( )SMSP( )IPL( )DCP(X)] DEU IPL                 ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA: DCP (DCP 8.07)                                   ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: MG017300                                       ]
 ]_____________________________________________________________________]
 ] TITLE: KEYBOARD INPUT AT DEU IPL                                    ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] INADVERTENT KEYBOARD ENTRY DURING THE DEU IPL PROCESS WILL          ]
 ] CAUSE THE KEYBOARD CHANNEL ERROR BIT TO BE SET IN THE DEU           ]
 ] BITE STATUS REGISTER AND EVENTUALLY CAUSES THE DEU BITE             ]
 ] INDICATOR TO TRIP.                                                  ]
 ]                                                                     ]
 ] THE DEU IPL PROM SOFTWARE DOES NOT EXPECT OR PROCESS                ]
 ] KEYBOARD ENTRIES. THE HARDWARE STAYS HUNG UP BECAUSE THE            ]
 ] ENTRY IS NOT PROCESSED WITHIN A FIXED TIME INTERVAL, SETS           ]
 ] THE KEYBOARD CHANNEL FAILURE, AND TRIPS THE BITE                    ]
 ] INDICATOR. THE CONDITION IS CLEARED WHEN THE DCP IS                 ]
 ] EXECUTING AND A NEW KEY IS DEPRESSED.                               ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] USER RESPONSE:                                                      ]
 ]                                                                     ]
 ] A. DO NOT DEPRESS KEYS DURING DEU IPL/LOAD PROCESS.                 ]
 ]                                                                     ]
 ] B. IF ACCIDENTAL DEPRESSION, WAIT UNTIL DCP IS EXECUTING            ]
 ]    AND DEPRESS NEW KEY.                                             ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]RI: G. W. PHILLIPS        DATE 05/03/88]                             ]
 ]    --------------------      ---------]                             ]
 ]SSD: SAM ANKNEY           DATE 08/10/88]                             ]
 ]    --------------------      ---------] JACK BOYKIN        08/17/88 ]
 ]PF MGR: MICHAEL BRIEDEN   DATE 08/09/88]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_____________________________________________________________________]
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