 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ] M. SOMERS          ]    PASS PROGRAM NOTE        ]      100724      ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:  01/09/89  ]
 ] IBM/282-7324       ]      RELEASE NOTE( )        ] REV B: 01/03/91  ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ]   OI7D AND SUBS               ]  CREW ( )  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW (X)  GNC ( )  VU ( )  SM/PL ( )] G9, P9                          ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA: I/O                                              ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS:  SDEU                                          ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ]          MSC TIMEOUT FOLLOWING DEU DUMP FAILURE                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] MSC TIMEOUT ERRORS ARE LOGGED INSTEAD OF INITIAL TIMEOUT ERRORS     ]
 ] ON DEU READ OPERATIONS PERFORMED FOLLOWING A FAILED DEU DUMP        ]
 ] ATTEMPT THAT WAS THE RESULT OF THE GPC UNABLE TO RECEIVE DATA       ]
 ] FROM THE DEU.  SPECIAL DEU DUMP LOGIC SETS THE DEU BCE INITIAL      ]
 ] TIMEOUT VALUE TO 3 TIMES ITS NORMAL VALUE.  IF THE BCE DETECTS A    ]
 ] NO-GO CONDITION PRIOR TO RESETTING THE ITO VALUE, THE INITIAL       ]
 ] TIMEOUT VALUE WILL REMAIN GREATER THAN THE MSC TIMEOUT TIME OF      ]
 ] OTHER DEU READS, AND THOSE OPERATIONS, INSTEAD OF GETTING INITIAL   ]
 ] TIMEOUT ERRORS WILL GET MSC TIMEOUT ERRORS.                         ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ]                                                                     ]
 ]   BE AWARE THAT THE I/O ERROR LOG MAY CONTAIN MSC TIMEOUT ERRORS    ]
 ]   INSTEAD OF EXPECTED INITIAL TIMEOUTS ON THE FAILED DEU BUS,       ]
 ]   FOLLOWING A FAILED DEU DUMP ATTEMPT.                              ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]IBM: PATTI A. THORNTON    DATE 02/04/91]                             ]
 ]    --------------------      ---------]                             ]
 ]FDSD:  W. R. PRUETT       DATE 02/07/91]                             ]
 ]     -------------------      ---------] DARRELL E. STAMPER 02/08/91 ]
 ]PF MGR:ELIZABETH FOUNTAIN DATE 02/05/91]------------------- -------- ]
 ]       ------------------     ---------] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
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