 +_____________________________________________________________________
  AUTHOR:                                          DR:              
   C.E. ORTIZ            PASS PROGRAM NOTE               107737     
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  ORG/PHONE:          OPS NOTE (X)  USER NOTE ( )  DATE:            
   LSIS/282-7497           RELEASE NOTE( )               12/21/94   
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  OI/FLIGHT EFFECTIVITY:          USER AFFECTED:                     
   OI-22 THRU OI-24               CREW ( )  GROUND (X)  DUMP ONLY ( )
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         MAJOR SOFTWARE AREA:        OPS MODES AFFECTED:             
 SSW (X)  GNC ( )  VU ( )  SM/PL ( ) G2, G3, G8, G9                  
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  SOFTWARE SUB-AREA: FCOS                                             
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  PRINCIPAL FUNCTIONS: FCOS                                           
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  TITLE:                                                              
          INITIAL T/O VALUE TOO LONG FOR GTG OVERLAYS                 
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  DESCRIPTION:                                                        
                                                                      
   THE INITIAL TIMEOUT VALUE FOR GPC-TO-GPC OVERLAYS IS CURRENTLY     
   2 SECONDS INSTEAD OF THE INTENDED 5 MILLISECONDS.  THIS MEANS      
   THAT FOR GPC-TO-GPC OVERLAYS, THE GPC/IOP WILL WAIT UP TO          
   2 SECONDS FOR THE FIRST WORD OF THE OVERLAY/PHASE TO COME IN.      
   THE RESULT OF THIS IS THAT AN MSC TIMEOUT, INSTEAD OF AN INITIAL   
   TIMEOUT, MAY BE LOGGED IN THE I/O ERROR LOG IF A BCE FAILURE,      
   WHICH PREVENTS DATA FROM BEING RECEIVED, IS ENCOUNTERED.           
                                                                      
                                                                      
                                                                      
                                                                      
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 USER RESPONSE:                                                       
                                                                      
  BE AWARE THAT IF A BCE FAILURE IS ENCOUNTERED DURING A GPC-TO-GPC   
  OVERLAY WHOSE TRANSFER TIME TAKES LESS THAN 2 SECONDS, AN MSC       
  TIMEOUT INSTEAD OF AN INITIAL TIMEOUT MAY BE LOGGED IN THE I/O      
  ERROR LOG, DUE THE LARGE INITIAL TIMEOUT VALUE (2 SECS.) TOGETHER   
  WITH THE SHORT GPC-TO-GPC TRANSFER TIME FOR SOME PHASE OVERLAYS     
  (E.G., MAJOR FUNCTION BASE OVERLAY).                                
                                                                      
                                                                      
                                                                      
                                                                      
                                                                      
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 CONCURRENCE:                           APPROVAL:                    
 LSIS:  JEAN L. ZOPHY      DATE 02/14/95                             
      -------------------      ---------                             
 ASD:   ERIC C. BINGHAM    DATE 02/14/95                             
      -------------------      --------- DARRELL E. STAMPER 02/14/95 
 PF MGR: KAYLENE F. KINDT  DATE 02/14/95------------------- -------- 
        -----------------      --------- CHAIRMAN, SASCB      DATE   
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