 +_____________________________________________________________________
  AUTHOR:                                          DR:              
  W. ALLEN               PASS PROGRAM NOTE                108070    
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  ORG/PHONE:          OPS NOTE (X)  USER NOTE ( )  DATE:            
  SSOAS/(281)335-2219      RELEASE NOTE( )                01/29/97  
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  OI/FLIGHT EFFECTIVITY:          USER AFFECTED:                     
   STS-85 RECON 1                 CREW (X)  GROUND (X)  DUMP ONLY ( )
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         MAJOR SOFTWARE AREA:        OPS MODES AFFECTED:             
 SSW (X)  GNC ( )  VU ( )  SM/PL ( )  G9                             
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  SOFTWARE SUB-AREA:  TRANSITIONS                                     
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  PRINCIPAL FUNCTIONS:  SACH, SDPS                                    
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  TITLE:                                                              
         CHECKSUM ERRORS ON GPC TO GPC OVERLAYS IN G9                 
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  DESCRIPTION:                                                        
                                                                      
   ANY ATTEMPT TO EXECUTE AN OPS TRANSITION TO G9 SUCH THAT ANY       
   TARGETED GPC(S) RECEIVE THE G9 OVERLAY FROM A SENDING GPC WILL     
   FAIL IN ALL RECEIVING GPC(S).  THE FAILING GPC(S) WILL REMAIN      
   IN OPS 0, I/O ERROR MMU(X) FAULT MESSAGES WILL BE ANNUNCIATED      
   AND I/O ERROR LOG CHECKSUM ERRORS WILL BE LOGGED BY THE FAILED     
   GPC(S).                                                            
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
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 USER RESPONSE:                                                       
                                                                      
   THE USER SHOULD FORCE G9 OVERLAYS AND OPS/MODE RECALLS TO USE      
   MASS MEMORY AS THE SOURCE BY ENTERING ITEM 10 ON SPEC 001.         
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
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 CONCURRENCE:                           APPROVAL:                    
 SSOAS:   JOHN MAGLEY      DATE 03/18/97                             
       ------------------      ---------                             
 ASD:  ERIC C. BINGHAM     DATE 03/19/97                             
     --------------------      --------- DARRELL E. STAMPER 03/21/97 
 PF MGR:  KAYLENE KINDT    DATE 03/20/97------------------- -------- 
        -----------------      --------- CHAIRMAN, SASCB      DATE   
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