1+_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ] PAUL M. TICE       ]    PASS PROGRAM NOTE        ]      37512       ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE: AUG. 1987  ]
 ] IBM/282-7297       ]      RELEASE NOTE( )        ] REV A: 02/12/93  ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] REL 19 AND SUBS               ]  CREW (X)  GROUND ( )  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW (X)  GNC ( )  VU ( )  SM/PL ( )] 0, G1, G2, G3, G6, G8, G9, S2,  ]
 ]                                   ] S4, PL9                         ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA:  DEU, SWITCHES                                   ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: SDPS                                           ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ] DEU CONTROL LOSS ASSOCIATED WITH THE BFC CRT SEL SWITCH             ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] THE PASS SOFTWARE HAS ASSUMED WHEN A BFC CRT SEL SWITCH CHANGE IS   ]
 ] PROCESSED THAT REQUIRES THE PASS TO RESUME CONTROL OF A DEU, THAT   ]
 ] THE DEU WILL BE INITIALLY PICKED UP BY THE PASS GPC WHICH           ]
 ] PREVIOUSLY HAD CONTROLLED THE DEU.  FOR THE CASE WHERE THE OLD      ]
 ] COMMAND GPC IS UNABLE TO ASSUME COMMAND, THAT DEU WILL NOT BE       ]
 ] PICKED UP BY THE PASS.                                              ]
 ]                                                                     ]
 ] FOR EXAMPLE: IF A DEU IS ISOLATED PRIOR TO OR AFTER THE BFC CRT     ]
 ] SWITCHES HAVE BEEN CONFIGURED TO GIVE THE BFS CONTROL OF THAT       ]
 ] CRT, THEN THE PREVIOUS PASS GPC WHICH HAD COMMANDED THE DEU WILL    ]
 ] NOT TAKE CONTROL OF THE DEU AFTER THE BFC CRT SWITCHES HAVE BEEN    ]
 ] RECONFIGURED TO RESUME PASS CONTROL.  CRT REASSIGNMENT MUST BE      ]
 ] PERFORMED TO REGAIN PASS CONTROL OF THE DEU.                        ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] USER RESPONSE:                                                      ]
 ]                                                                     ]
 ] A. FROM ANOTHER PASS CONTROLLED DEU, REASSIGN THE DEU DROPPED TO    ]
 ]    AN ACTIVE PASS GPC.                                              ]
 ]                                                                     ]
 ] B. RETURN THE BFC CRT SEL SWITCH FOR BFS CONTROL RESUMPTION.        ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]IBM:   JEAN L. ZOPHY      DATE 04/13/93]                             ]
 ]    --------------------      ---------]                             ]
 ]FDSD:    W. R. PRUETT     DATE 04/15/93]                             ]
 ]     -------------------      ---------] DARRELL E. STAMPER 04/28/93 ]
 ]PF MGR: ERIC C. BINGHAM   DATE 04/13/93]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
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